diff --git a/.circleci/config.yml b/.circleci/config.yml
index 22fc1da9b8330..723b74b6b974a 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -61,7 +61,7 @@ parameters:
 # Build machines configs.
 docker-image: &docker-image
   docker:
-    - image: electronjs/build:d09fd95029bd8c1c73069888231b29688ef385ed
+    - image: electron.azurecr.io/build:4cec2c5ab66765caa724e37bae2bffb9b29722a5
 
 machine-linux-medium: &machine-linux-medium
   <<: *docker-image
@@ -94,6 +94,7 @@ env-release-build: &env-release-build
   STRIP_BINARIES: true
   GENERATE_SYMBOLS: true
   CHECK_DIST_MANIFEST: '1'
+  IS_RELEASE: true
 
 env-headless-testing: &env-headless-testing
   DISPLAY: ':99.0'
@@ -134,9 +135,6 @@ env-mas: &env-mas
   MAS_BUILD: 'true'
 
 # Misc build configuration options.
-env-enable-sccache: &env-enable-sccache
-  USE_SCCACHE: true
-
 env-send-slack-notifications: &env-send-slack-notifications
   NOTIFY_SLACK: true
   
@@ -232,23 +230,34 @@ step-gclient-sync: &step-gclient-sync
           "$CIRCLE_REPOSITORY_URL"
 
         ELECTRON_USE_THREE_WAY_MERGE_FOR_PATCHES=1 gclient sync --with_branch_heads --with_tags
-        # Re-export all the patches to check if there were changes.
-        python src/electron/script/export_all_patches.py src/electron/patches/config.json
-        cd src/electron
-        git update-index --refresh || true
-        if ! git diff-index --quiet HEAD --; then
-          # There are changes to the patches. Make a git commit with the updated patches
-          git add patches
-          GIT_COMMITTER_NAME="Electron Bot" GIT_COMMITTER_EMAIL="anonymous@electronjs.org" git commit -m "update patches" --author="Electron Bot <anonymous@electronjs.org>"
-          # Export it
-          mkdir -p ../../patches
-          git format-patch -1 --stdout --keep-subject --no-stat --full-index > ../../patches/update-patches.patch
-          echo
-          echo "======================================================================"
-          echo "There were changes to the patches when applying."
-          echo "Check the CI artifacts for a patch you can apply to fix it."
-          echo "======================================================================"
-          exit 1
+        if [ "$IS_RELEASE" != "true" ]; then
+          # Re-export all the patches to check if there were changes.
+          python src/electron/script/export_all_patches.py src/electron/patches/config.json
+          cd src/electron
+          git update-index --refresh || true
+          if ! git diff-index --quiet HEAD --; then
+            # There are changes to the patches. Make a git commit with the updated patches
+            git add patches
+            GIT_COMMITTER_NAME="PatchUp" GIT_COMMITTER_EMAIL="73610968+patchup[bot]@users.noreply.github.com" git commit -m "chore: update patches" --author="PatchUp <73610968+patchup[bot]@users.noreply.github.com>"
+            # Export it
+            mkdir -p ../../patches
+            git format-patch -1 --stdout --keep-subject --no-stat --full-index > ../../patches/update-patches.patch
+            if (node ./script/push-patch.js 2> /dev/null > /dev/null); then
+              echo
+              echo "======================================================================"
+              echo "Changes to the patches when applying, we have auto-pushed the diff to the current branch"
+              echo "A new CI job will kick off shortly"
+              echo "======================================================================"
+              exit 1
+            else
+              echo
+              echo "======================================================================"
+              echo "There were changes to the patches when applying."
+              echo "Check the CI artifacts for a patch you can apply to fix it."
+              echo "======================================================================"
+              exit 1
+            fi
+          fi
         fi
       fi
 
@@ -259,26 +268,14 @@ step-setup-env-for-build: &step-setup-env-for-build
       # To find `gn` executable.
       echo 'export CHROMIUM_BUILDTOOLS_PATH="'"$PWD"'/src/buildtools"' >> $BASH_ENV
 
-      if [ "$USE_SCCACHE" == "true" ]; then
-        # https://github.com/mozilla/sccache
-        SCCACHE_PATH="$PWD/src/electron/external_binaries/sccache"
-        echo 'export SCCACHE_PATH="'"$SCCACHE_PATH"'"' >> $BASH_ENV
-        if [ "$CIRCLE_PR_NUMBER" != "" ]; then
-          #if building a fork set readonly access to sccache
-          echo 'export SCCACHE_BUCKET="electronjs-sccache-ci"' >> $BASH_ENV
-          echo 'export SCCACHE_TWO_TIER=true' >> $BASH_ENV
-        fi
-      fi
-
 step-setup-goma-for-build: &step-setup-goma-for-build
   run:
     name: Setup Goma
     command: |
-      echo 'export USE_GOMA=true' >> $BASH_ENV
-      if [ "`uname`" == "Linux" ]; then
-        echo 'export NUMBER_OF_NINJA_PROCESSES=300' >> $BASH_ENV
-      else
-        echo 'export NUMBER_OF_NINJA_PROCESSES=25' >> $BASH_ENV
+      echo 'export NUMBER_OF_NINJA_PROCESSES=300' >> $BASH_ENV
+      if [ "`uname`" == "Darwin" ]; then
+        echo 'ulimit -n 10000' >> $BASH_ENV
+        echo 'sudo launchctl limit maxfiles 65536 200000' >> $BASH_ENV
       fi
       if [ ! -z "$RAW_GOMA_AUTH" ]; then
         echo $RAW_GOMA_AUTH > ~/.goma_oauth2_config
@@ -287,24 +284,27 @@ step-setup-goma-for-build: &step-setup-goma-for-build
       cd build-tools
       npm install
       mkdir third_party
-      node -e "require('./src/utils/goma.js').downloadAndPrepare()"
-      node -e "require('./src/utils/goma.js').ensure()"
+      node -e "require('./src/utils/goma.js').downloadAndPrepare({ gomaOneForAll: true })"
+      third_party/goma/goma_ctl.py ensure_start
       echo 'export GN_GOMA_FILE='`node -e "console.log(require('./src/utils/goma.js').gnFilePath)"` >> $BASH_ENV
       echo 'export LOCAL_GOMA_DIR='`node -e "console.log(require('./src/utils/goma.js').dir)"` >> $BASH_ENV
+      echo 'export GOMA_FALLBACK_ON_AUTH_FAILURE=true' >> $BASH_ENV
       cd ..
 
 step-restore-brew-cache: &step-restore-brew-cache
   restore_cache:
     paths:
-      - /usr/local/Homebrew
+      - /usr/local/Cellar/gnu-tar
+      - /usr/local/bin/gtar
     keys:
-      - v1-brew-cache-{{ arch }}
+      - v4-brew-cache-{{ arch }}
 
 step-save-brew-cache: &step-save-brew-cache
   save_cache:
     paths:
-      - /usr/local/Homebrew
-    key: v1-brew-cache-{{ arch }}
+      - /usr/local/Cellar/gnu-tar
+      - /usr/local/bin/gtar
+    key: v4-brew-cache-{{ arch }}
     name: Persisting brew cache
 
 step-get-more-space-on-mac: &step-get-more-space-on-mac
@@ -380,8 +380,10 @@ step-install-gnutar-on-mac: &step-install-gnutar-on-mac
     name: Install gnu-tar on macos
     command: |
       if [ "`uname`" == "Darwin" ]; then
-        brew update
-        brew install gnu-tar
+        if [ ! -d /usr/local/Cellar/gnu-tar/ ]; then
+          brew update
+          brew install gnu-tar
+        fi
         ln -fs /usr/local/bin/gtar /usr/local/bin/tar
       fi
 
@@ -390,11 +392,7 @@ step-gn-gen-default: &step-gn-gen-default
     name: Default GN gen
     command: |
       cd src
-      if [ "$USE_GOMA" == "true" ]; then
-        gn gen out/Default --args="import(\"$GN_CONFIG\") import(\"$GN_GOMA_FILE\") $GN_EXTRA_ARGS $GN_BUILDFLAG_ARGS"
-      else
-        gn gen out/Default --args="import(\"$GN_CONFIG\") cc_wrapper=\"$SCCACHE_PATH\" $GN_EXTRA_ARGS $GN_BUILDFLAG_ARGS"
-      fi
+      gn gen out/Default --args="import(\"$GN_CONFIG\") import(\"$GN_GOMA_FILE\") $GN_EXTRA_ARGS $GN_BUILDFLAG_ARGS"
 
 step-gn-check: &step-gn-check
   run:
@@ -491,11 +489,7 @@ step-electron-maybe-chromedriver-gn-gen: &step-electron-maybe-chromedriver-gn-ge
     command: |
       cd src
       if [ "$TARGET_ARCH" == "arm" ] || [ "$TARGET_ARCH" == "arm64" ]; then
-        if [ "$USE_GOMA" == "true" ]; then
-          gn gen out/chromedriver --args="import(\"$GN_CONFIG\") import(\"$GN_GOMA_FILE\") is_component_ffmpeg=false proprietary_codecs=false $GN_EXTRA_ARGS $GN_BUILDFLAG_ARGS"
-        else
-          gn gen out/chromedriver --args="import(\"$GN_CONFIG\") cc_wrapper=\"$SCCACHE_PATH\" is_component_ffmpeg=false proprietary_codecs=false $GN_EXTRA_ARGS $GN_BUILDFLAG_ARGS"
-        fi
+        gn gen out/chromedriver --args="import(\"$GN_CONFIG\") import(\"$GN_GOMA_FILE\") is_component_ffmpeg=false proprietary_codecs=false $GN_EXTRA_ARGS $GN_BUILDFLAG_ARGS"
       fi
 
 step-electron-chromedriver-build: &step-electron-chromedriver-build
@@ -550,10 +544,10 @@ step-electron-publish: &step-electron-publish
       cd src/electron
       if [ "$UPLOAD_TO_S3" == "1" ]; then
         echo 'Uploading Electron release distribution to S3'
-        script/release/uploaders/upload.py --upload_to_s3
+        script/release/uploaders/upload.py --verbose --upload_to_s3
       else
         echo 'Uploading Electron release distribution to Github releases'
-        script/release/uploaders/upload.py
+        script/release/uploaders/upload.py --verbose
       fi
 
 step-persist-data-for-tests: &step-persist-data-for-tests
@@ -606,11 +600,7 @@ step-ffmpeg-gn-gen: &step-ffmpeg-gn-gen
     name: ffmpeg GN gen
     command: |
       cd src
-      if [ "$USE_GOMA" == "true" ]; then
-        gn gen out/ffmpeg --args="import(\"//electron/build/args/ffmpeg.gn\") import(\"$GN_GOMA_FILE\") $GN_EXTRA_ARGS"
-      else
-        gn gen out/ffmpeg --args="import(\"//electron/build/args/ffmpeg.gn\") cc_wrapper=\"$SCCACHE_PATH\" $GN_EXTRA_ARGS"
-      fi
+      gn gen out/ffmpeg --args="import(\"//electron/build/args/ffmpeg.gn\") import(\"$GN_GOMA_FILE\") $GN_EXTRA_ARGS"
 
 step-ffmpeg-build: &step-ffmpeg-build
   run:
@@ -653,16 +643,17 @@ step-setup-linux-for-headless-testing: &step-setup-linux-for-headless-testing
         sh -e /etc/init.d/xvfb start
       fi
 
-step-show-sccache-stats: &step-show-sccache-stats
+step-show-goma-stats: &step-show-goma-stats
   run:
-    name: Check sccache/goma stats after build
+    shell: /bin/bash
+    name: Check goma stats after build
     command: |
-      if [ "$SCCACHE_PATH" != "" ]; then
-        $SCCACHE_PATH -s
-      fi
-      if [ "$USE_GOMA" == "true" ]; then
-        $LOCAL_GOMA_DIR/goma_ctl.py stat
-      fi
+      set +e
+      set +o pipefail
+      $LOCAL_GOMA_DIR/goma_ctl.py stat
+      $LOCAL_GOMA_DIR/diagnose_goma_log.py
+      true
+    when: always
 
 step-mksnapshot-build: &step-mksnapshot-build
   run:
@@ -789,6 +780,8 @@ step-ninja-summary: &step-ninja-summary
   run:
     name: Print ninja summary
     command: |
+      set +e
+      set +o pipefail
       python depot_tools/post_build_ninja_summary.py -C src/out/Default
 
 step-ninja-report: &step-ninja-report
@@ -993,7 +986,6 @@ steps-checkout-and-save-cache: &steps-checkout-and-save-cache
     - *step-maybe-early-exit-doc-only-change
     - *step-depot-tools-get
     - *step-depot-tools-add-to-path
-    - *step-restore-brew-cache
     - *step-get-more-space-on-mac
     - *step-install-gnutar-on-mac
 
@@ -1032,6 +1024,7 @@ steps-electron-gn-check: &steps-electron-gn-check
     - *step-maybe-early-exit-doc-only-change
     - *step-depot-tools-add-to-path
     - *step-setup-env-for-build
+    - *step-setup-goma-for-build
     - *step-gn-gen-default
     - *step-gn-check
 
@@ -1065,6 +1058,7 @@ steps-electron-ts-compile-for-doc-change: &steps-electron-ts-compile-for-doc-cha
 
     - *step-depot-tools-add-to-path
     - *step-setup-env-for-build
+    - *step-setup-goma-for-build
     - *step-restore-brew-cache
     - *step-get-more-space-on-mac
     - *step-install-npm-deps-on-mac
@@ -1074,26 +1068,13 @@ steps-electron-ts-compile-for-doc-change: &steps-electron-ts-compile-for-doc-cha
     #Compile ts/js to verify doc change didn't break anything
     - *step-ts-compile
 
-steps-chromedriver-build: &steps-chromedriver-build
-  steps:
-    - attach_workspace:
-        at: .
-    - *step-depot-tools-add-to-path
-    - *step-setup-env-for-build
-    - *step-fix-sync-on-mac
-
-    - *step-electron-maybe-chromedriver-gn-gen
-    - *step-electron-chromedriver-build
-    - *step-electron-chromedriver-store
-
-    - *step-maybe-notify-slack-failure
-
 steps-native-tests: &steps-native-tests
   steps:
     - attach_workspace:
         at: .
     - *step-depot-tools-add-to-path
     - *step-setup-env-for-build
+    - *step-setup-goma-for-build
     - *step-gn-gen-default
 
     - run:
@@ -1101,7 +1082,7 @@ steps-native-tests: &steps-native-tests
         command: |
           cd src
           ninja -C out/Default $BUILD_TARGET
-    - *step-show-sccache-stats
+    - *step-show-goma-stats
 
     - *step-setup-linux-for-headless-testing
     - run:
@@ -1395,7 +1376,7 @@ commands:
             - *step-nodejs-headers-build
             - *step-nodejs-headers-store
 
-            - *step-show-sccache-stats
+            - *step-show-goma-stats
 
             # mksnapshot
             - *step-mksnapshot-build
@@ -1483,13 +1464,14 @@ commands:
             - *step-gclient-sync
             - *step-delete-git-directories
             - *step-minimize-workspace-size-from-checkout
-      - *step-fix-sync-on-mac            
+      - *step-fix-sync-on-mac
       - *step-setup-env-for-build
+      - *step-setup-goma-for-build
       - *step-gn-gen-default
 
       # Electron app
       - *step-electron-build
-      - *step-show-sccache-stats
+      - *step-show-goma-stats
       - *step-maybe-generate-breakpad-symbols
       - *step-maybe-electron-dist-strip
       - *step-electron-dist-build
@@ -1673,14 +1655,6 @@ jobs:
       <<: *env-testing-build
     <<: *steps-electron-gn-check
 
-  linux-x64-chromedriver:
-    <<: *machine-linux-medium
-    environment:
-      <<: *env-linux-medium
-      <<: *env-release-build
-      <<: *env-send-slack-notifications
-    <<: *steps-chromedriver-build
-
   linux-x64-release:
     <<: *machine-linux-2xlarge
     environment:
@@ -1700,8 +1674,8 @@ jobs:
       <<: *env-linux-2xlarge-release
       GCLIENT_EXTRA_ARGS: '--custom-var=checkout_boto=True --custom-var=checkout_requests=True'
       <<: *env-release-build
-      <<: *env-enable-sccache
       UPLOAD_TO_S3: << pipeline.parameters.upload-to-s3 >>
+      <<: *env-ninja-status
     steps:
       - electron-publish:  
           attach: false
@@ -1712,8 +1686,8 @@ jobs:
     environment:
       <<: *env-linux-2xlarge-release
       <<: *env-release-build
-      <<: *env-enable-sccache
       UPLOAD_TO_S3: << pipeline.parameters.upload-to-s3 >>
+      <<: *env-ninja-status
     steps:
       - electron-publish:  
           attach: true
@@ -1733,15 +1707,6 @@ jobs:
           checkout: true
           use-out-cache: false
 
-  linux-ia32-chromedriver:
-    <<: *machine-linux-medium
-    environment:
-      <<: *env-linux-medium
-      <<: *env-ia32
-      <<: *env-release-build
-      <<: *env-send-slack-notifications
-    <<: *steps-chromedriver-build
-
   linux-ia32-release:
     <<: *machine-linux-2xlarge
     environment:
@@ -1763,9 +1728,9 @@ jobs:
       GCLIENT_EXTRA_ARGS: '--custom-var=checkout_boto=True --custom-var=checkout_requests=True'
       <<: *env-ia32
       <<: *env-release-build
-      <<: *env-enable-sccache
       <<: *env-32bit-release
       UPLOAD_TO_S3: << pipeline.parameters.upload-to-s3 >>
+      <<: *env-ninja-status
     steps:
       - electron-publish:  
           attach: false
@@ -1777,9 +1742,9 @@ jobs:
       <<: *env-linux-2xlarge-release
       <<: *env-ia32
       <<: *env-release-build
-      <<: *env-enable-sccache
       <<: *env-32bit-release
       UPLOAD_TO_S3: << pipeline.parameters.upload-to-s3 >>
+      <<: *env-ninja-status
     steps:
       - electron-publish:  
           attach: true
@@ -1800,15 +1765,6 @@ jobs:
           checkout: true
           use-out-cache: false
 
-  linux-arm-chromedriver:
-    <<: *machine-linux-medium
-    environment:
-      <<: *env-linux-medium
-      <<: *env-arm
-      <<: *env-release-build
-      <<: *env-send-slack-notifications
-    <<: *steps-chromedriver-build
-
   linux-arm-release:
     <<: *machine-linux-2xlarge
     environment:
@@ -1829,10 +1785,10 @@ jobs:
       <<: *env-linux-2xlarge-release
       <<: *env-arm
       <<: *env-release-build
-      <<: *env-enable-sccache
       <<: *env-32bit-release
       GCLIENT_EXTRA_ARGS: '--custom-var=checkout_arm=True --custom-var=checkout_boto=True --custom-var=checkout_requests=True'
       UPLOAD_TO_S3: << pipeline.parameters.upload-to-s3 >>
+      <<: *env-ninja-status
     steps:
       - electron-publish:  
           attach: false
@@ -1844,9 +1800,9 @@ jobs:
       <<: *env-linux-2xlarge-release
       <<: *env-arm
       <<: *env-release-build
-      <<: *env-enable-sccache
       <<: *env-32bit-release
       UPLOAD_TO_S3: << pipeline.parameters.upload-to-s3 >>
+      <<: *env-ninja-status
     steps:
       - electron-publish:  
           attach: true
@@ -1875,15 +1831,6 @@ jobs:
       <<: *env-testing-build
     <<: *steps-electron-gn-check
 
-  linux-arm64-chromedriver:
-    <<: *machine-linux-medium
-    environment:
-      <<: *env-linux-medium
-      <<: *env-arm64
-      <<: *env-release-build
-      <<: *env-send-slack-notifications
-    <<: *steps-chromedriver-build
-
   linux-arm64-release:
     <<: *machine-linux-2xlarge
     environment:
@@ -1904,9 +1851,9 @@ jobs:
       <<: *env-linux-2xlarge-release
       <<: *env-arm64
       <<: *env-release-build
-      <<: *env-enable-sccache
       GCLIENT_EXTRA_ARGS: '--custom-var=checkout_arm64=True --custom-var=checkout_boto=True --custom-var=checkout_requests=True'
       UPLOAD_TO_S3: << pipeline.parameters.upload-to-s3 >>
+      <<: *env-ninja-status
     steps:
       - electron-publish:  
           attach: false
@@ -1918,8 +1865,8 @@ jobs:
       <<: *env-linux-2xlarge-release
       <<: *env-arm64
       <<: *env-release-build
-      <<: *env-enable-sccache
       UPLOAD_TO_S3: << pipeline.parameters.upload-to-s3 >>
+      <<: *env-ninja-status
     steps:
       - electron-publish:  
           attach: true
@@ -1947,14 +1894,6 @@ jobs:
       <<: *env-testing-build
     <<: *steps-electron-gn-check
 
-  osx-chromedriver:
-    <<: *machine-mac
-    environment:
-      <<: *env-machine-mac
-      <<: *env-release-build
-      <<: *env-send-slack-notifications
-    <<: *steps-chromedriver-build
-
   osx-release:
     <<: *machine-mac-large
     environment:
@@ -1974,9 +1913,9 @@ jobs:
     environment:
       <<: *env-mac-large-release
       <<: *env-release-build
-      <<: *env-enable-sccache
       GCLIENT_EXTRA_ARGS: '--custom-var=checkout_boto=True --custom-var=checkout_requests=True'
       UPLOAD_TO_S3: << pipeline.parameters.upload-to-s3 >>
+      <<: *env-ninja-status
     steps:
       - electron-publish:  
           attach: false
@@ -1987,8 +1926,8 @@ jobs:
     environment:
       <<: *env-mac-large-release
       <<: *env-release-build
-      <<: *env-enable-sccache
       UPLOAD_TO_S3: << pipeline.parameters.upload-to-s3 >>
+      <<: *env-ninja-status
     steps:
       - electron-publish:  
           attach: true
@@ -2039,9 +1978,9 @@ jobs:
       <<: *env-mac-large-release
       <<: *env-mas
       <<: *env-release-build
-      <<: *env-enable-sccache
       GCLIENT_EXTRA_ARGS: '--custom-var=checkout_boto=True --custom-var=checkout_requests=True'
       UPLOAD_TO_S3: << pipeline.parameters.upload-to-s3 >>
+      <<: *env-ninja-status
     steps:
       - electron-publish:  
           attach: false
@@ -2053,7 +1992,6 @@ jobs:
       <<: *env-mac-large-release
       <<: *env-mas
       <<: *env-release-build
-      <<: *env-enable-sccache
       UPLOAD_TO_S3: << pipeline.parameters.upload-to-s3 >>
     steps:
       - electron-publish:  
@@ -2351,9 +2289,11 @@ workflows:
     - osx-publish-skip-checkout:
         requires:
           - mac-checkout
+        context: release-env
     - mas-publish-skip-checkout:
         requires:
           - mac-checkout
+        context: release-env
 
   lint:
     when: << pipeline.parameters.run-lint >>
diff --git a/.env.example b/.env.example
index eb3df4b6bdf9c..4d218327bd60e 100644
--- a/.env.example
+++ b/.env.example
@@ -4,4 +4,3 @@
 APPVEYOR_CLOUD_TOKEN=
 CIRCLE_TOKEN=
 ELECTRON_GITHUB_TOKEN=
-VSTS_TOKEN=
\ No newline at end of file
diff --git a/.gitattributes b/.gitattributes
index 9d6933d53b98a..88189455c32c1 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -2,3 +2,13 @@
 # files to be checked out with LF endings even if core.autocrlf is true.
 *.patch text eol=lf
 patches/**/.patches merge=union
+
+# Source code and markdown files should always use LF as line ending.
+*.cc text eol=lf
+*.mm text eol=lf
+*.h text eol=lf
+*.js text eol=lf
+*.ts text eol=lf
+*.py text eol=lf
+*.ps1 text eol=lf
+*.md text eol=lf
diff --git a/BUILD.gn b/BUILD.gn
index c093dc2846aeb..2d722308ec902 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -370,6 +370,7 @@ source_set("electron_lib") {
     "//third_party/libyuv",
     "//third_party/webrtc_overrides:webrtc_component",
     "//third_party/widevine/cdm:headers",
+    "//third_party/zlib/google:zip",
     "//ui/base/idle",
     "//ui/events:dom_keycode_converter",
     "//ui/gl",
@@ -675,6 +676,14 @@ source_set("electron_lib") {
       "shell/browser/electron_pdf_web_contents_helper_client.h",
     ]
   }
+
+  if (is_win && enable_win_dark_mode_window_ui) {
+    sources += [
+      "shell/browser/win/dark_mode.cc",
+      "shell/browser/win/dark_mode.h",
+    ]
+    libs += [ "uxtheme.lib" ]
+  }
 }
 
 electron_paks("packed_resources") {
@@ -1094,22 +1103,32 @@ if (is_mac) {
         "//components/crash/core/app:run_as_crashpad_handler",
       ]
 
+      ldflags = []
+
       libs = [
         "comctl32.lib",
         "uiautomationcore.lib",
         "wtsapi32.lib",
       ]
 
-      configs += [ "//build/config/win:windowed" ]
-
-      ldflags = [
-        # Windows 7 doesn't have these DLLs.
-        # TODO: are there other DLLs we need to list here to be win7
-        # compatible?
-        "/DELAYLOAD:api-ms-win-core-winrt-l1-1-0.dll",
-        "/DELAYLOAD:api-ms-win-core-winrt-string-l1-1-0.dll",
+      configs += [
+        "//build/config/win:windowed",
+        "//build/config/win:delayloads",
       ]
 
+      if (current_cpu == "x86") {
+        # Set the initial stack size to 0.5MiB, instead of the 1.5MiB needed by
+        # Chrome's main thread. This saves significant memory on threads (like
+        # those in the Windows thread pool, and others) whose stack size we can
+        # only control through this setting. Because Chrome's main thread needs
+        # a minimum 1.5 MiB stack, the main thread (in 32-bit builds only) uses
+        # fibers to switch to a 1.5 MiB stack before running any other code.
+        ldflags += [ "/STACK:0x80000" ]
+      } else {
+        # Increase the initial stack size. The default is 1MB, this is 8MB.
+        ldflags += [ "/STACK:0x800000" ]
+      }
+
       # This is to support renaming of electron.exe. node-gyp has hard-coded
       # executable names which it will recognise as node. This module definition
       # file claims that the electron executable is in fact named "node.exe",
diff --git a/DEPS b/DEPS
index 37a727621fc55..1a21349c85daa 100644
--- a/DEPS
+++ b/DEPS
@@ -14,7 +14,7 @@ gclient_gn_args = [
 
 vars = {
   'chromium_version':
-    '85.0.4183.87',
+    '85.0.4183.121',
   'node_version':
     'v12.16.3',
   'nan_version':
diff --git a/ELECTRON_VERSION b/ELECTRON_VERSION
index 3b9bddfcc41d5..4ab9d20ad3e80 100644
--- a/ELECTRON_VERSION
+++ b/ELECTRON_VERSION
@@ -1 +1 @@
-10.1.0
\ No newline at end of file
+10.4.7
\ No newline at end of file
diff --git a/README.md b/README.md
index 453587ae40241..50e3bc1cbe4ef 100644
--- a/README.md
+++ b/README.md
@@ -28,15 +28,12 @@ The preferred method is to install Electron as a development dependency in your
 app:
 
 ```sh
-npm install electron --save-dev [--save-exact]
+npm install electron --save-dev
 ```
 
-The `--save-exact` flag is recommended for Electron prior to version 2, as it does not follow semantic
-versioning. As of version 2.0.0, Electron follows semver, so you don't need `--save-exact` flag. For info on how to manage Electron versions in your apps, see
-[Electron versioning](docs/tutorial/electron-versioning.md).
-
 For more installation options and troubleshooting tips, see
-[installation](docs/tutorial/installation.md).
+[installation](docs/tutorial/installation.md). For info on how to manage Electron versions in your apps, see
+[Electron versioning](docs/tutorial/electron-versioning.md).
 
 ## Quick start & Electron Fiddle
 
diff --git a/appveyor.yml b/appveyor.yml
index 622450e836ff0..20f07607e825d 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -36,6 +36,7 @@ environment:
   ELECTRON_ENABLE_STACK_DUMPING: 1
   MOCHA_REPORTER: mocha-multi-reporters
   MOCHA_MULTI_REPORTERS: mocha-appveyor-reporter, tap
+  GOMA_FALLBACK_ON_AUTH_FAILURE: true
 notifications:
   - provider: Webhook
     url: https://electron-mission-control.herokuapp.com/rest/appveyor-hook
@@ -53,7 +54,9 @@ build_script:
       } else {
         node script/yarn.js install --frozen-lockfile
 
-        if ($(node script/doc-only-change.js --prNumber=$env:APPVEYOR_PULL_REQUEST_NUMBER --prBranch=$env:APPVEYOR_REPO_BRANCH;$LASTEXITCODE -eq 0)) {
+        $result = node script/doc-only-change.js --prNumber=$env:APPVEYOR_PULL_REQUEST_NUMBER --prBranch=$env:APPVEYOR_REPO_BRANCH
+        Write-Output $result
+        if ($result.ExitCode -eq 0) {
           Write-warning "Skipping build for doc only change"; Exit-AppveyorBuild
         }
       }
@@ -133,7 +136,7 @@ build_script:
         cd build-tools
         npm install
         mkdir third_party
-        node -e "require('./src/utils/goma.js').downloadAndPrepare()"
+        node -e "require('./src/utils/goma.js').downloadAndPrepare({ gomaOneForAll: true })"
         $env:GN_GOMA_FILE = node -e "console.log(require('./src/utils/goma.js').gnFilePath)"
         $env:LOCAL_GOMA_DIR = node -e "console.log(require('./src/utils/goma.js').dir)"
         cd ..
@@ -218,10 +221,10 @@ deploy_script:
       if (Test-Path Env:\ELECTRON_RELEASE) {
         if (Test-Path Env:\UPLOAD_TO_S3) {
           Write-Output "Uploading Electron release distribution to s3"
-          & python script\release\uploaders\upload.py --upload_to_s3
+          & python script\release\uploaders\upload.py --verbose --upload_to_s3
         } else {
           Write-Output "Uploading Electron release distribution to github releases"
-          & python script\release\uploaders\upload.py
+          & python script\release\uploaders\upload.py --verbose
         }
       } elseif (Test-Path Env:\TEST_WOA) {
         node script/release/ci-release-build.js --job=electron-woa-testing --ci=VSTS --armTest --appveyorJobId=$env:APPVEYOR_JOB_ID $env:APPVEYOR_REPO_BRANCH
diff --git a/azure-pipelines-woa.yml b/azure-pipelines-woa.yml
index 4807e5ec03e98..4bd34bbe59bca 100644
--- a/azure-pipelines-woa.yml
+++ b/azure-pipelines-woa.yml
@@ -92,6 +92,6 @@ steps:
   condition: always()
 
 - powershell: |
-    Remove-Item -path $env:APPDATA/Electron* -Recurse
+    Remove-Item -path $env:APPDATA/Electron* -Recurse -Force -ErrorAction Ignore
   displayName: 'Delete user app data directories'
   condition: always()
diff --git a/build/webpack/run-compiler.js b/build/webpack/run-compiler.js
index 9aa75e7bf5498..5acd9884770f4 100644
--- a/build/webpack/run-compiler.js
+++ b/build/webpack/run-compiler.js
@@ -10,10 +10,9 @@ config.output = {
   filename: path.basename(outPath)
 }
 
-const { wrapInitWithProfilingTimeout } = config;
-delete config.wrapInitWithProfilingTimeout;
+const { wrapInitWithProfilingTimeout, wrapInitWithTryCatch, ...webpackConfig } = config;
 
-webpack(config, (err, stats) => {
+webpack(webpackConfig, (err, stats) => {
   if (err) {
     console.error(err)
     process.exit(1)
@@ -21,9 +20,17 @@ webpack(config, (err, stats) => {
     console.error(stats.toString('normal'))
     process.exit(1)
   } else {
+    let contents = fs.readFileSync(outPath, 'utf8');
+    if (wrapInitWithTryCatch) {
+      contents = `try {
+${contents}
+} catch (err) {
+  console.error('Electron ${webpackConfig.output.filename} script failed to run');
+  console.error(err);
+}`;
+    }
     if (wrapInitWithProfilingTimeout) {
-      const contents = fs.readFileSync(outPath, 'utf8');
-      const newContents = `function ___electron_webpack_init__() {
+      contents = `function ___electron_webpack_init__() {
 ${contents}
 };
 if ((globalThis.process || binding.process).argv.includes("--profile-electron-init")) {
@@ -31,8 +38,8 @@ if ((globalThis.process || binding.process).argv.includes("--profile-electron-in
 } else {
   ___electron_webpack_init__();
 }`;
-      fs.writeFileSync(outPath, newContents);
     }
+    fs.writeFileSync(outPath, contents)
     process.exit(0)
   }
 })
diff --git a/build/webpack/webpack.config.base.js b/build/webpack/webpack.config.base.js
index f507ea11d20af..43f83ffed8891 100644
--- a/build/webpack/webpack.config.base.js
+++ b/build/webpack/webpack.config.base.js
@@ -69,7 +69,8 @@ module.exports = ({
   loadElectronFromAlternateTarget,
   targetDeletesNodeGlobals,
   target,
-  wrapInitWithProfilingTimeout
+  wrapInitWithProfilingTimeout,
+  wrapInitWithTryCatch
 }) => {
   let entry = path.resolve(electronRoot, 'lib', target, 'init.ts')
   if (!fs.existsSync(entry)) {
@@ -85,6 +86,7 @@ module.exports = ({
       filename: `${target}.bundle.js`
     },
     wrapInitWithProfilingTimeout,
+    wrapInitWithTryCatch,
     resolve: {
       alias: {
         '@electron/internal': path.resolve(electronRoot, 'lib'),
diff --git a/build/webpack/webpack.config.isolated_renderer.js b/build/webpack/webpack.config.isolated_renderer.js
index 28b9e940fa971..95a553d899547 100644
--- a/build/webpack/webpack.config.isolated_renderer.js
+++ b/build/webpack/webpack.config.isolated_renderer.js
@@ -1,4 +1,5 @@
 module.exports = require('./webpack.config.base')({
   target: 'isolated_renderer',
-  alwaysHasNode: false
+  alwaysHasNode: false,
+  wrapInitWithTryCatch: true
 })
diff --git a/build/webpack/webpack.config.renderer.js b/build/webpack/webpack.config.renderer.js
index 8f890ee6e0d76..594aaa7725d88 100644
--- a/build/webpack/webpack.config.renderer.js
+++ b/build/webpack/webpack.config.renderer.js
@@ -2,5 +2,6 @@ module.exports = require('./webpack.config.base')({
   target: 'renderer',
   alwaysHasNode: true,
   targetDeletesNodeGlobals: true,
-  wrapInitWithProfilingTimeout: true
+  wrapInitWithProfilingTimeout: true,
+  wrapInitWithTryCatch: true
 })
diff --git a/build/webpack/webpack.config.sandboxed_renderer.js b/build/webpack/webpack.config.sandboxed_renderer.js
index 9c38d6acb99bf..7a96344978ab3 100644
--- a/build/webpack/webpack.config.sandboxed_renderer.js
+++ b/build/webpack/webpack.config.sandboxed_renderer.js
@@ -2,4 +2,5 @@ module.exports = require('./webpack.config.base')({
   target: 'sandboxed_renderer',
   alwaysHasNode: false,
   wrapInitWithProfilingTimeout: true,
+  wrapInitWithTryCatch: true
 })
diff --git a/build/webpack/webpack.config.worker.js b/build/webpack/webpack.config.worker.js
index 7fc167b54f281..007c82dee27b5 100644
--- a/build/webpack/webpack.config.worker.js
+++ b/build/webpack/webpack.config.worker.js
@@ -2,5 +2,6 @@ module.exports = require('./webpack.config.base')({
   target: 'worker',
   loadElectronFromAlternateTarget: 'renderer',
   alwaysHasNode: true,
-  targetDeletesNodeGlobals: true
+  targetDeletesNodeGlobals: true,
+  wrapInitWithTryCatch: true
 })
diff --git a/buildflags/BUILD.gn b/buildflags/BUILD.gn
index f49fc1613d0dd..9b76b62cc19db 100644
--- a/buildflags/BUILD.gn
+++ b/buildflags/BUILD.gn
@@ -21,6 +21,7 @@ buildflag_header("buildflags") {
     "ENABLE_ELECTRON_EXTENSIONS=$enable_electron_extensions",
     "ENABLE_BUILTIN_SPELLCHECKER=$enable_builtin_spellchecker",
     "ENABLE_PICTURE_IN_PICTURE=$enable_picture_in_picture",
+    "ENABLE_WIN_DARK_MODE_WINDOW_UI=$enable_win_dark_mode_window_ui",
     "OVERRIDE_LOCATION_PROVIDER=$enable_fake_location_provider",
   ]
 }
diff --git a/buildflags/buildflags.gni b/buildflags/buildflags.gni
index ab79d37d091d3..7a9927f06fea9 100644
--- a/buildflags/buildflags.gni
+++ b/buildflags/buildflags.gni
@@ -36,4 +36,7 @@ declare_args() {
 
   # Enable Spellchecker support
   enable_builtin_spellchecker = true
+
+  # Undocumented Windows dark mode API
+  enable_win_dark_mode_window_ui = false
 }
diff --git a/chromium_src/chrome/browser/certificate_manager_model.cc b/chromium_src/chrome/browser/certificate_manager_model.cc
index c8f580fa4baac..8a38b5370853a 100644
--- a/chromium_src/chrome/browser/certificate_manager_model.cc
+++ b/chromium_src/chrome/browser/certificate_manager_model.cc
@@ -36,6 +36,7 @@ net::NSSCertDatabase* GetNSSCertDatabaseForResourceContext(
     // Linux has only a single persistent slot compared to ChromeOS's separate
     // public and private slot.
     // Redirect any slot usage to this persistent slot on Linux.
+    crypto::EnsureNSSInit();
     g_nss_cert_database = new net::NSSCertDatabase(
         crypto::ScopedPK11Slot(PK11_GetInternalKeySlot()) /* public slot */,
         crypto::ScopedPK11Slot(PK11_GetInternalKeySlot()) /* private slot */);
diff --git a/chromium_src/chrome/browser/process_singleton_posix.cc b/chromium_src/chrome/browser/process_singleton_posix.cc
index 69a0a53b05342..56909b706c9b5 100644
--- a/chromium_src/chrome/browser/process_singleton_posix.cc
+++ b/chromium_src/chrome/browser/process_singleton_posix.cc
@@ -826,10 +826,9 @@ ProcessSingleton::NotifyResult ProcessSingleton::NotifyOtherProcessWithTimeout(
   to_send.append(current_dir.value());
 
   const std::vector<std::string>& argv = electron::ElectronCommandLine::argv();
-  for (std::vector<std::string>::const_iterator it = argv.begin();
-       it != argv.end(); ++it) {
+  for (const auto& arg : argv) {
     to_send.push_back(kTokenDelimiter);
-    to_send.append(*it);
+    to_send.append(arg);
   }
 
   // Send the message
diff --git a/chromium_src/chrome/browser/ui/views/frame/global_menu_bar_registrar_x11.cc b/chromium_src/chrome/browser/ui/views/frame/global_menu_bar_registrar_x11.cc
index 32aa74606b614..0c419e06f6ded 100644
--- a/chromium_src/chrome/browser/ui/views/frame/global_menu_bar_registrar_x11.cc
+++ b/chromium_src/chrome/browser/ui/views/frame/global_menu_bar_registrar_x11.cc
@@ -122,8 +122,7 @@ void GlobalMenuBarRegistrarX11::OnNameOwnerChanged(GObject* /* ignored */,
                                                    GParamSpec* /* ignored */) {
   // If the name owner changed, we need to reregister all the live x11::Window
   // with the system.
-  for (std::set<x11::Window>::const_iterator it = live_windows_.begin();
-       it != live_windows_.end(); ++it) {
-    RegisterXWindow(*it);
+  for (const auto& window : live_windows_) {
+    RegisterXWindow(window);
   }
 }
diff --git a/default_app/default_app.ts b/default_app/default_app.ts
index 7c2d8a3b9eecb..08d1c7ce39558 100644
--- a/default_app/default_app.ts
+++ b/default_app/default_app.ts
@@ -41,14 +41,14 @@ ipcMain.handle('bootstrap', (event) => {
   return isTrustedSender(event.sender) ? electronPath : null;
 });
 
-async function createWindow () {
+async function createWindow (backgroundColor?: string) {
   await app.whenReady();
 
   const options: Electron.BrowserWindowConstructorOptions = {
     width: 960,
     height: 620,
     autoHideMenuBar: true,
-    backgroundColor: '#2f3241',
+    backgroundColor,
     webPreferences: {
       preload: path.resolve(__dirname, 'preload.js'),
       contextIsolation: true,
@@ -96,7 +96,7 @@ export const loadURL = async (appUrl: string) => {
 };
 
 export const loadFile = async (appPath: string) => {
-  mainWindow = await createWindow();
+  mainWindow = await createWindow(appPath === 'index.html' ? '#2f3241' : undefined);
   mainWindow.loadFile(appPath);
   mainWindow.focus();
 };
diff --git a/docs/api/app.md b/docs/api/app.md
index 7e43ccb46564a..eda52dbb73489 100644
--- a/docs/api/app.md
+++ b/docs/api/app.md
@@ -32,7 +32,8 @@ In most cases, you should do everything in the `ready` event handler.
 
 Returns:
 
-* `launchInfo` unknown _macOS_
+* `event` Event
+* `launchInfo` Record<string, any> _macOS_
 
 Emitted once, when Electron has finished initializing. On macOS, `launchInfo`
 holds the `userInfo` of the `NSUserNotification` that was used to open the
@@ -387,7 +388,7 @@ Returns:
     * `killed` - Process was sent a SIGTERM or otherwise killed externally
     * `crashed` - Process crashed
     * `oom` - Process ran out of memory
-    * `launch-failure` - Process never successfully launched
+    * `launch-failed` - Process never successfully launched
     * `integrity-failure` - Windows code integrity checks failed
 
 Emitted when the renderer process unexpectedly dissapears.  This is normally
@@ -1267,7 +1268,7 @@ systems Application folder. Use in combination with `app.moveToApplicationsFolde
 ### `app.moveToApplicationsFolder([options])` _macOS_
 
 * `options` Object (optional)
-  * `conflictHandler` Function<Boolean> (optional) - A handler for potential conflict in move failure.
+  * `conflictHandler` Function\<Boolean> (optional) - A handler for potential conflict in move failure.
     * `conflictType` String - The type of move conflict encountered by the handler; can be `exists` or `existsAndRunning`, where `exists` means that an app of the same name is present in the Applications directory and `existsAndRunning` means both that it exists and that it's presently running.
 
 Returns `Boolean` - Whether the move was successful. Please note that if
diff --git a/docs/api/browser-window.md b/docs/api/browser-window.md
index 6f48540be58ea..8ef399fd0d41d 100644
--- a/docs/api/browser-window.md
+++ b/docs/api/browser-window.md
@@ -1829,6 +1829,13 @@ Replacement API for setBrowserView supporting work with multi browser views.
 
 * `browserView` [BrowserView](browser-view.md)
 
+#### `win.setTopBrowserView(browserView)` _Experimental_
+
+* `browserView` [BrowserView](browser-view.md)
+
+Raises `browserView` above other `BrowserView`s attached to `win`.
+Throws an error if `browserView` is not attached to `win`.
+
 #### `win.getBrowserViews()` _Experimental_
 
 Returns `BrowserView[]` - an array of all BrowserViews that have been attached
diff --git a/docs/api/command-line-switches.md b/docs/api/command-line-switches.md
index e75d722ea5446..b5667d95b8ca4 100644
--- a/docs/api/command-line-switches.md
+++ b/docs/api/command-line-switches.md
@@ -198,6 +198,14 @@ logging level for all code in the source files under a `foo/bar` directory.
 
 This switch only works when `--enable-logging` is also passed.
 
+### --force_high_performance_gpu
+
+Force using discrete GPU when there are multiple GPUs available.
+
+### --force_low_power_gpu
+
+Force using integrated GPU when there are multiple GPUs available.
+
 ## Node.js Flags
 
 Electron supports some of the [CLI flags][node-cli] supported by Node.js.
diff --git a/docs/api/extensions.md b/docs/api/extensions.md
index 4a93951024921..3faad34aa8706 100644
--- a/docs/api/extensions.md
+++ b/docs/api/extensions.md
@@ -102,3 +102,21 @@ The following methods of `chrome.tabs` are supported:
 > **Note:** In Chrome, passing `-1` as a tab ID signifies the "currently active
 > tab". Since Electron has no such concept, passing `-1` as a tab ID is not
 > supported and will raise an error.
+
+### `chrome.management`
+
+The following methods of `chrome.management` are supported:
+
+- `chrome.management.getAll`
+- `chrome.management.get`
+- `chrome.management.getSelf`
+- `chrome.management.getPermissionWarningsById`
+- `chrome.management.getPermissionWarningsByManifest`
+- `chrome.management.onEnabled`
+- `chrome.management.onDisabled`
+
+### `chrome.webRequest`
+
+All features of this API are supported.
+
+> **NOTE:** Electron's [`webRequest`](web-request.md) module takes precedence over `chrome.webRequest` if there are conflicting handlers.
diff --git a/docs/api/global-shortcut.md b/docs/api/global-shortcut.md
index 78263901761d3..bb9dd27fbd37b 100644
--- a/docs/api/global-shortcut.md
+++ b/docs/api/global-shortcut.md
@@ -9,7 +9,7 @@ with the operating system so that you can customize the operations for various
 shortcuts.
 
 **Note:** The shortcut is global; it will work even if the app does
-not have the keyboard focus. You should not use this module until the `ready`
+not have the keyboard focus. This module cannot be used before the `ready`
 event of the app module is emitted.
 
 ```javascript
diff --git a/docs/api/ipc-main.md b/docs/api/ipc-main.md
index ea020c8866588..00123b7a48cfc 100644
--- a/docs/api/ipc-main.md
+++ b/docs/api/ipc-main.md
@@ -91,7 +91,7 @@ Removes listeners of the specified `channel`.
 ### `ipcMain.handle(channel, listener)`
 
 * `channel` String
-* `listener` Function<Promise<void> | any>
+* `listener` Function<Promise\<void> | any>
   * `event` IpcMainInvokeEvent
   * `...args` any[]
 
@@ -123,7 +123,7 @@ WebContents is the source of the invoke request.
 ### `ipcMain.handleOnce(channel, listener)`
 
 * `channel` String
-* `listener` Function<Promise<void> | any>
+* `listener` Function<Promise\<void> | any>
   * `event` IpcMainInvokeEvent
   * `...args` any[]
 
diff --git a/docs/api/ipc-renderer.md b/docs/api/ipc-renderer.md
index a47d408429507..8f8b78f58570c 100644
--- a/docs/api/ipc-renderer.md
+++ b/docs/api/ipc-renderer.md
@@ -61,9 +61,13 @@ Algorithm][SCA], just like [`window.postMessage`][], so prototype chains will no
 included. Sending Functions, Promises, Symbols, WeakMaps, or WeakSets will
 throw an exception.
 
-> **NOTE**: Sending non-standard JavaScript types such as DOM objects or
-> special Electron objects is deprecated, and will begin throwing an exception
-> starting with Electron 9.
+> **NOTE:** Sending non-standard JavaScript types such as DOM objects or
+> special Electron objects will throw an exception.
+>
+> Since the main process does not have support for DOM objects such as
+> `ImageBitmap`, `File`, `DOMMatrix` and so on, such objects cannot be sent over
+> Electron's IPC to the main process, as the main process would have no way to decode
+> them. Attempting to send such objects over IPC will result in an error.
 
 The main process handles it by listening for `channel` with the
 [`ipcMain`](ipc-main.md) module.
@@ -85,9 +89,13 @@ Algorithm][SCA], just like [`window.postMessage`][], so prototype chains will no
 included. Sending Functions, Promises, Symbols, WeakMaps, or WeakSets will
 throw an exception.
 
-> **NOTE**: Sending non-standard JavaScript types such as DOM objects or
-> special Electron objects is deprecated, and will begin throwing an exception
-> starting with Electron 9.
+> **NOTE:** Sending non-standard JavaScript types such as DOM objects or
+> special Electron objects will throw an exception.
+>
+> Since the main process does not have support for DOM objects such as
+> `ImageBitmap`, `File`, `DOMMatrix` and so on, such objects cannot be sent over
+> Electron's IPC to the main process, as the main process would have no way to decode
+> them. Attempting to send such objects over IPC will result in an error.
 
 The main process should listen for `channel` with
 [`ipcMain.handle()`](ipc-main.md#ipcmainhandlechannel-listener).
@@ -123,9 +131,13 @@ Algorithm][SCA], just like [`window.postMessage`][], so prototype chains will no
 included. Sending Functions, Promises, Symbols, WeakMaps, or WeakSets will
 throw an exception.
 
-> **NOTE**: Sending non-standard JavaScript types such as DOM objects or
-> special Electron objects is deprecated, and will begin throwing an exception
-> starting with Electron 9.
+> **NOTE:** Sending non-standard JavaScript types such as DOM objects or
+> special Electron objects will throw an exception.
+>
+> Since the main process does not have support for DOM objects such as
+> `ImageBitmap`, `File`, `DOMMatrix` and so on, such objects cannot be sent over
+> Electron's IPC to the main process, as the main process would have no way to decode
+> them. Attempting to send such objects over IPC will result in an error.
 
 The main process handles it by listening for `channel` with [`ipcMain`](ipc-main.md) module,
 and replies by setting `event.returnValue`.
diff --git a/docs/api/menu.md b/docs/api/menu.md
index cd9e177ae08da..5938d386b0d69 100644
--- a/docs/api/menu.md
+++ b/docs/api/menu.md
@@ -22,8 +22,10 @@ Sets `menu` as the application menu on macOS. On Windows and Linux, the
 Also on Windows and Linux, you can use a `&` in the top-level item name to
 indicate which letter should get a generated accelerator. For example, using
 `&File` for the file menu would result in a generated `Alt-F` accelerator that
-opens the associated menu. The indicated character in the button label gets an
-underline. The `&` character is not displayed on the button label.
+opens the associated menu. The indicated character in the button label then gets an
+underline, and the `&` character is not displayed on the button label.
+
+In order to escape the `&` character in an item name, add a proceeding `&`. For example, `&&File` would result in `&File` displayed on the button label.
 
 Passing `null` will suppress the default menu. On Windows and Linux,
 this has the additional effect of removing the menu bar from the window.
diff --git a/docs/api/power-monitor.md b/docs/api/power-monitor.md
index 1e94f1d25dfb4..234b41a67071a 100644
--- a/docs/api/power-monitor.md
+++ b/docs/api/power-monitor.md
@@ -8,19 +8,19 @@ Process: [Main](../glossary.md#main-process)
 
 The `powerMonitor` module emits the following events:
 
-### Event: 'suspend' _Linux_ _Windows_
+### Event: 'suspend' _macOS_ _Windows_
 
 Emitted when the system is suspending.
 
-### Event: 'resume' _Linux_ _Windows_
+### Event: 'resume' _macOS_ _Windows_
 
 Emitted when system is resuming.
 
-### Event: 'on-ac' _Windows_
+### Event: 'on-ac' _macOS_ _Windows_
 
 Emitted when the system changes to AC power.
 
-### Event: 'on-battery' _Windows_
+### Event: 'on-battery' _macOS_  _Windows_
 
 Emitted when system changes to battery power.
 
diff --git a/docs/api/session.md b/docs/api/session.md
index 68d337bea5162..254aa5e5a886f 100644
--- a/docs/api/session.md
+++ b/docs/api/session.md
@@ -376,7 +376,7 @@ session.fromPartition('some-partition').setPermissionRequestHandler((webContents
 
 #### `ses.setPermissionCheckHandler(handler)`
 
-* `handler` Function<Boolean> | null
+* `handler` Function\<Boolean> | null
   * `webContents` [WebContents](web-contents.md) - WebContents checking the permission.  Please note that if the request comes from a subframe you should use `requestingUrl` to check the request origin.
   * `permission` String - Enum of 'media'.
   * `requestingOrigin` String - The origin URL of the permission check
diff --git a/docs/api/structures/ipc-main-event.md b/docs/api/structures/ipc-main-event.md
index f222de35b86dc..ae32dc46a6888 100644
--- a/docs/api/structures/ipc-main-event.md
+++ b/docs/api/structures/ipc-main-event.md
@@ -1,5 +1,6 @@
 # IpcMainEvent Object extends `Event`
 
+* `processId` Integer - The internal ID of the renderer process that sent this message
 * `frameId` Integer - The ID of the renderer frame that sent this message
 * `returnValue` any - Set this to the value to be returned in a synchronous message
 * `sender` WebContents - Returns the `webContents` that sent the message
diff --git a/docs/api/structures/ipc-main-invoke-event.md b/docs/api/structures/ipc-main-invoke-event.md
index 235b219c2d6ea..b765791e8258c 100644
--- a/docs/api/structures/ipc-main-invoke-event.md
+++ b/docs/api/structures/ipc-main-invoke-event.md
@@ -1,4 +1,5 @@
 # IpcMainInvokeEvent Object extends `Event`
 
+* `processId` Integer - The internal ID of the renderer process that sent this message
 * `frameId` Integer - The ID of the renderer frame that sent this message
 * `sender` WebContents - Returns the `webContents` that sent the message
diff --git a/docs/api/structures/stream-protocol-response.md b/docs/api/structures/stream-protocol-response.md
deleted file mode 100644
index ac5718d07fdf4..0000000000000
--- a/docs/api/structures/stream-protocol-response.md
+++ /dev/null
@@ -1,5 +0,0 @@
-# StreamProtocolResponse Object
-
-* `statusCode` Number (optional) - The HTTP response code.
-* `headers` Record<String, String | String[]> (optional) - An object containing the response headers.
-* `data` ReadableStream | null - A Node.js readable stream representing the response body.
diff --git a/docs/api/structures/string-protocol-response.md b/docs/api/structures/string-protocol-response.md
deleted file mode 100644
index 19414e3f2aa7c..0000000000000
--- a/docs/api/structures/string-protocol-response.md
+++ /dev/null
@@ -1,5 +0,0 @@
-# StringProtocolResponse Object
-
-* `mimeType` String (optional) - MIME type of the response.
-* `charset` String (optional) - Charset of the response.
-* `data` String | null - A string representing the response body.
diff --git a/docs/api/system-preferences.md b/docs/api/system-preferences.md
index a9c5ed5c5b4cd..704c72ea4c594 100644
--- a/docs/api/system-preferences.md
+++ b/docs/api/system-preferences.md
@@ -132,6 +132,8 @@ This is necessary for events such as `NSUserDefaultsDidChangeNotification`.
   * `userInfo` Record<String, unknown>
   * `object` String
 
+Returns `Number` - The ID of this subscription
+
 Same as `subscribeNotification`, but uses `NSWorkspace.sharedWorkspace.notificationCenter`.
 This is necessary for events such as `NSWorkspaceDidActivateApplicationNotification`.
 
diff --git a/docs/api/web-contents.md b/docs/api/web-contents.md
index 20a5e9e569404..f202dea689809 100644
--- a/docs/api/web-contents.md
+++ b/docs/api/web-contents.md
@@ -364,7 +364,7 @@ Returns:
     * `killed` - Process was sent a SIGTERM or otherwise killed externally
     * `crashed` - Process crashed
     * `oom` - Process ran out of memory
-    * `launch-failure` - Process never successfully launched
+    * `launch-failed` - Process never successfully launched
     * `integrity-failure` - Windows code integrity checks failed
 
 Emitted when the renderer process unexpectedly dissapears.  This is normally
@@ -1296,9 +1296,9 @@ Returns [`PrinterInfo[]`](structures/printer-info.md)
   * `pagesPerSheet` Number (optional) - The number of pages to print per page sheet.
   * `collate` Boolean (optional) - Whether the web page should be collated.
   * `copies` Number (optional) - The number of copies of the web page to print.
-  * `pageRanges` Record<string, number> (optional) - The page range to print.
-    * `from` Number - the start page.
-    * `to` Number - the end page.
+  * `pageRanges` Object[] (optional) - The page range to print. On macOS, only one range is honored.
+    * `from` Number - Index of the first page to print (0-based).
+    * `to` Number - Index of the last page to print (inclusive) (0-based).
   * `duplexMode` String (optional) - Set the duplex mode of the printed web page. Can be `simplex`, `shortEdge`, or `longEdge`.
   * `dpi` Record<string, number> (optional)
     * `horizontal` Number (optional) - The horizontal dpi.
@@ -1338,8 +1338,8 @@ win.webContents.print(options, (success, errorType) => {
     default margin, 1 for no margin, and 2 for minimum margin.
   * `scaleFactor` Number (optional) - The scale factor of the web page. Can range from 0 to 100.
   * `pageRanges` Record<string, number> (optional) - The page range to print.
-    * `from` Number - the first page to print.
-    * `to` Number - the last page to print (inclusive).
+    * `from` Number - Index of the first page to print (0-based).
+    * `to` Number - Index of the last page to print (inclusive) (0-based).
   * `pageSize` String | Size (optional) - Specify page size of the generated PDF. Can be `A3`,
   `A4`, `A5`, `Legal`, `Letter`, `Tabloid` or an Object containing `height` and `width` in microns.
   * `printBackground` Boolean (optional) - Whether to print CSS backgrounds.
@@ -1549,8 +1549,7 @@ included. Sending Functions, Promises, Symbols, WeakMaps, or WeakSets will
 throw an exception.
 
 > **NOTE**: Sending non-standard JavaScript types such as DOM objects or
-> special Electron objects is deprecated, and will begin throwing an exception
-> starting with Electron 9.
+> special Electron objects will throw an exception.
 
 The renderer process can handle the message by listening to `channel` with the
 [`ipcRenderer`](ipc-renderer.md) module.
@@ -1586,7 +1585,9 @@ app.whenReady().then(() => {
 
 #### `contents.sendToFrame(frameId, channel, ...args)`
 
-* `frameId` Integer
+* `frameId` Integer | [number, number] - the ID of the frame to send to, or a
+  pair of `[processId, frameId]` if the frame is in a different process to the
+  main frame.
 * `channel` String
 * `...args` any[]
 
@@ -1596,9 +1597,8 @@ Send an asynchronous message to a specific frame in a renderer process via
 chains will not be included. Sending Functions, Promises, Symbols, WeakMaps, or
 WeakSets will throw an exception.
 
-> **NOTE**: Sending non-standard JavaScript types such as DOM objects or
-> special Electron objects is deprecated, and will begin throwing an exception
-> starting with Electron 9.
+> **NOTE:** Sending non-standard JavaScript types such as DOM objects or
+> special Electron objects will throw an exception.
 
 The renderer process can handle the message by listening to `channel` with the
 [`ipcRenderer`](ipc-renderer.md) module.
@@ -1760,7 +1760,7 @@ Returns `Boolean` - If *offscreen rendering* is enabled returns whether it is cu
 * `fps` Integer
 
 If *offscreen rendering* is enabled sets the frame rate to the specified number.
-Only values between 1 and 60 are accepted.
+Only values between 1 and 240 are accepted.
 
 #### `contents.getFrameRate()`
 
@@ -1858,7 +1858,7 @@ The zoom factor is the zoom percent divided by 100, so 300% = 3.0.
 #### `contents.frameRate`
 
 An `Integer` property that sets the frame rate of the web contents to the specified number.
-Only values between 1 and 60 are accepted.
+Only values between 1 and 240 are accepted.
 
 Only applicable if *offscreen rendering* is enabled.
 
diff --git a/docs/api/webview-tag.md b/docs/api/webview-tag.md
index f60a8276d2781..a4d670e792dd2 100644
--- a/docs/api/webview-tag.md
+++ b/docs/api/webview-tag.md
@@ -560,9 +560,9 @@ Stops any `findInPage` request for the `webview` with the provided `action`.
   * `pagesPerSheet` Number (optional) - The number of pages to print per page sheet.
   * `collate` Boolean (optional) - Whether the web page should be collated.
   * `copies` Number (optional) - The number of copies of the web page to print.
-  * `pageRanges` Record<string, number> (optional) - The page range to print.
-    * `from` Number - the start page.
-    * `to` Number - the end page.
+  * `pageRanges` Object[] (optional) - The page range to print. On macOS, only the first range is honored.
+    * `from` Number - Index of the first page to print (0-based).
+    * `to` Number - Index of the last page to print (inclusive) (0-based).
   * `duplexMode` String (optional) - Set the duplex mode of the printed web page. Can be `simplex`, `shortEdge`, or `longEdge`.
   * `dpi` Record<string, number> (optional)
     * `horizontal` Number (optional) - The horizontal dpi.
@@ -588,8 +588,8 @@ Prints `webview`'s web page. Same as `webContents.print([options])`.
     and `width` in microns.
   * `scaleFactor` Number (optional) - The scale factor of the web page. Can range from 0 to 100.
   * `pageRanges` Record<string, number> (optional) - The page range to print.
-    * `from` Number - the first page to print.
-    * `to` Number - the last page to print (inclusive).
+    * `from` Number - Index of the first page to print (0-based).
+    * `to` Number - Index of the last page to print (inclusive) (0-based).
   * `pageSize` String | Size (optional) - Specify page size of the generated PDF. Can be `A3`,
   `A4`, `A5`, `Legal`, `Letter`, `Tabloid` or an Object containing `height`
   * `printBackground` Boolean (optional) - Whether to print CSS backgrounds.
diff --git a/docs/breaking-changes-ns.md b/docs/breaking-changes-ns.md
deleted file mode 100644
index 1914c1f43f449..0000000000000
--- a/docs/breaking-changes-ns.md
+++ /dev/null
@@ -1,61 +0,0 @@
-# Breaking changes (NetworkService) (Draft)
-
-This document describes changes to Electron APIs after migrating network code
-to NetworkService API.
-
-We don't currently have an estimate of when we will enable `NetworkService` by
-default in Electron, but as Chromium is already removing non-`NetworkService`
-code, we might switch before Electron 10.
-
-The content of this document should be moved to `breaking-changes.md` once we have
-determined when to enable `NetworkService` in Electron.
-
-## Planned Breaking API Changes
-
-### `protocol.unregisterProtocol`
-### `protocol.uninterceptProtocol`
-
-The APIs are now synchronous and the optional callback is no longer needed.
-
-```javascript
-// Deprecated
-protocol.unregisterProtocol(scheme, () => { /* ... */ })
-// Replace with
-protocol.unregisterProtocol(scheme)
-```
-
-### `protocol.registerFileProtocol`
-### `protocol.registerBufferProtocol`
-### `protocol.registerStringProtocol`
-### `protocol.registerHttpProtocol`
-### `protocol.registerStreamProtocol`
-### `protocol.interceptFileProtocol`
-### `protocol.interceptStringProtocol`
-### `protocol.interceptBufferProtocol`
-### `protocol.interceptHttpProtocol`
-### `protocol.interceptStreamProtocol`
-
-The APIs are now synchronous and the optional callback is no longer needed.
-
-```javascript
-// Deprecated
-protocol.registerFileProtocol(scheme, handler, () => { /* ... */ })
-// Replace with
-protocol.registerFileProtocol(scheme, handler)
-```
-
-The registered or intercepted protocol does not have effect on current page
-until navigation happens.
-
-### `protocol.isProtocolHandled`
-
-This API is deprecated and users should use `protocol.isProtocolRegistered`
-and `protocol.isProtocolIntercepted` instead.
-
-```javascript
-// Deprecated
-protocol.isProtocolHandled(scheme).then(() => { /* ... */ })
-// Replace with
-const isRegistered = protocol.isProtocolRegistered(scheme)
-const isIntercepted = protocol.isProtocolIntercepted(scheme)
-```
diff --git a/docs/breaking-changes.md b/docs/breaking-changes.md
index d5bb629de0675..4a9b0de228ce2 100644
--- a/docs/breaking-changes.md
+++ b/docs/breaking-changes.md
@@ -124,6 +124,54 @@ const w = new BrowserWindow({
 We [recommend moving away from the remote
 module](https://medium.com/@nornagon/electrons-remote-module-considered-harmful-70d69500f31).
 
+### `protocol.unregisterProtocol`
+### `protocol.uninterceptProtocol`
+
+The APIs are now synchronous and the optional callback is no longer needed.
+
+```javascript
+// Deprecated
+protocol.unregisterProtocol(scheme, () => { /* ... */ })
+// Replace with
+protocol.unregisterProtocol(scheme)
+```
+
+### `protocol.registerFileProtocol`
+### `protocol.registerBufferProtocol`
+### `protocol.registerStringProtocol`
+### `protocol.registerHttpProtocol`
+### `protocol.registerStreamProtocol`
+### `protocol.interceptFileProtocol`
+### `protocol.interceptStringProtocol`
+### `protocol.interceptBufferProtocol`
+### `protocol.interceptHttpProtocol`
+### `protocol.interceptStreamProtocol`
+
+The APIs are now synchronous and the optional callback is no longer needed.
+
+```javascript
+// Deprecated
+protocol.registerFileProtocol(scheme, handler, () => { /* ... */ })
+// Replace with
+protocol.registerFileProtocol(scheme, handler)
+```
+
+The registered or intercepted protocol does not have effect on current page
+until navigation happens.
+
+### `protocol.isProtocolHandled`
+
+This API is deprecated and users should use `protocol.isProtocolRegistered`
+and `protocol.isProtocolIntercepted` instead.
+
+```javascript
+// Deprecated
+protocol.isProtocolHandled(scheme).then(() => { /* ... */ })
+// Replace with
+const isRegistered = protocol.isProtocolRegistered(scheme)
+const isIntercepted = protocol.isProtocolIntercepted(scheme)
+```
+
 ## Planned Breaking API Changes (9.0)
 
 ### Default Changed: Loading non-context-aware native modules in the renderer process is disabled by default
@@ -138,6 +186,45 @@ you should plan to update your native modules to be context aware.
 
 For more detailed information see [#18397](https://github.com/electron/electron/issues/18397).
 
+### Deprecated: `BrowserWindow` extension APIs
+
+The following extension APIs have been deprecated:
+* `BrowserWindow.addExtension(path)`
+* `BrowserWindow.addDevToolsExtension(path)`
+* `BrowserWindow.removeExtension(name)`
+* `BrowserWindow.removeDevToolsExtension(name)`
+* `BrowserWindow.getExtensions()`
+* `BrowserWindow.getDevToolsExtensions()`
+
+Use the session APIs instead:
+* `ses.loadExtension(path)`
+* `ses.removeExtension(extension_id)`
+* `ses.getAllExtensions()`
+
+```js
+// Deprecated in Electron 9
+BrowserWindow.addExtension(path)
+BrowserWindow.addDevToolsExtension(path)
+// Replace with
+session.defaultSession.loadExtension(path)
+```
+
+```js
+// Deprecated in Electron 9
+BrowserWindow.removeExtension(name)
+BrowserWindow.removeDevToolsExtension(name)
+// Replace with
+session.defaultSession.removeExtension(extension_id)
+```
+
+```js
+// Deprecated in Electron 9
+BrowserWindow.getExtensions()
+BrowserWindow.getDevToolsExtensions()
+// Replace with
+session.defaultSession.getAllExtensions()
+```
+
 ### Removed: `<webview>.getWebContents()`
 
 This API, which was deprecated in Electron 8.0, is now removed.
@@ -281,6 +368,52 @@ in Electron 8.x, and cease to exist in Electron 9.x. The layout zoom level
 limits are now fixed at a minimum of 0.25 and a maximum of 5.0, as defined
 [here](https://chromium.googlesource.com/chromium/src/+/938b37a6d2886bf8335fc7db792f1eb46c65b2ae/third_party/blink/common/page/page_zoom.cc#11).
 
+### Deprecated events in `systemPreferences`
+
+The following `systemPreferences` events have been deprecated:
+* `inverted-color-scheme-changed`
+* `high-contrast-color-scheme-changed`
+
+Use the new `updated` event on the `nativeTheme` module instead.
+
+```js
+// Deprecated
+systemPreferences.on('inverted-color-scheme-changed', () => { /* ... */ })
+systemPreferences.on('high-contrast-color-scheme-changed', () => { /* ... */ })
+
+// Replace with
+nativeTheme.on('updated', () => { /* ... */ })
+```
+
+### Deprecated: methods in `systemPreferences`
+
+The following `systemPreferences` methods have been deprecated:
+* `systemPreferences.isDarkMode()`
+* `systemPreferences.isInvertedColorScheme()`
+* `systemPreferences.isHighContrastColorScheme()`
+
+Use the following `nativeTheme` properties instead:
+* `nativeTheme.shouldUseDarkColors`
+* `nativeTheme.shouldUseInvertedColorScheme`
+* `nativeTheme.shouldUseHighContrastColors`
+
+```js
+// Deprecated
+systemPreferences.isDarkMode()
+// Replace with
+nativeTheme.shouldUseDarkColors
+
+// Deprecated
+systemPreferences.isInvertedColorScheme()
+// Replace with
+nativeTheme.shouldUseInvertedColorScheme
+
+// Deprecated
+systemPreferences.isHighContrastColorScheme()
+// Replace with
+nativeTheme.shouldUseHighContrastColors
+```
+
 ## Planned Breaking API Changes (7.0)
 
 ### Deprecated: Atom.io Node Headers URL
diff --git a/docs/development/build-instructions-gn.md b/docs/development/build-instructions-gn.md
index 09f6ee2bcd49a..dceaf92ac0589 100644
--- a/docs/development/build-instructions-gn.md
+++ b/docs/development/build-instructions-gn.md
@@ -173,12 +173,12 @@ $ gn gen out/Testing-x86 --args='... target_cpu = "x86"'
 
 Not all combinations of source and target CPU/OS are supported by Chromium.
 
-<table>
-<tr><th>Host</th><th>Target</th><th>Status</th></tr>
-<tr><td>Windows x64</td><td>Windows arm64</td><td>Experimental</td>
-<tr><td>Windows x64</td><td>Windows x86</td><td>Automatically tested</td></tr>
-<tr><td>Linux x64</td><td>Linux x86</td><td>Automatically tested</td></tr>
-</table>
+| Host        | Target        | Status               |
+|-------------|---------------|----------------------|
+| Windows x64 | Windows arm64 | Experimental         |
+| Windows x64 | Windows x86   | Automatically tested |
+| Linux x64   | Linux x86     | Automatically tested |
+
 
 If you test other combinations and find them to work, please update this document :)
 
diff --git a/docs/development/build-instructions-macos.md b/docs/development/build-instructions-macos.md
index 62720006c1dc4..d88b277f5e885 100644
--- a/docs/development/build-instructions-macos.md
+++ b/docs/development/build-instructions-macos.md
@@ -42,7 +42,7 @@ $ pip install pyobjc
 If you're developing Electron and don't plan to redistribute your
 custom Electron build, you may skip this section.
 
-Official Electron builds are built with [Xcode 9.4.1](http://adcdownload.apple.com/Developer_Tools/Xcode_9.4.1/Xcode_9.4.1.xip), and the macOS 10.13 SDK.  Building with a newer SDK works too, but the releases currently use the 10.13 SDK.
+Official Electron builds are built with [Xcode 11.1](https://download.developer.apple.com/Developer_Tools/Xcode_11.1/Xcode_11.1.xip), and the macOS 10.15 SDK. Building with a newer SDK works too, but the releases currently use the 10.15 SDK.
 
 ## Building Electron
 
diff --git a/docs/development/setting-up-symbol-server.md b/docs/development/setting-up-symbol-server.md
index 0f5030cbf5179..ad6f1f5252acd 100644
--- a/docs/development/setting-up-symbol-server.md
+++ b/docs/development/setting-up-symbol-server.md
@@ -43,8 +43,8 @@ SRV*c:\code\symbols\*https://msdl.microsoft.com/download/symbols;SRV*c:\code\sym
 
 ## Using the symbol server in Visual Studio
 
-<img src='https://mdn.mozillademos.org/files/733/symbol-server-vc8express-menu.jpg'>
-<img src='https://mdn.mozillademos.org/files/2497/2005_options.gif'>
+![Tools -> Options](https://mdn.mozillademos.org/files/733/symbol-server-vc8express-menu.jpg)
+![Symbols Settings](https://mdn.mozillademos.org/files/2497/2005_options.gif)
 
 ## Troubleshooting: Symbols will not load
 
diff --git a/docs/fiddles/native-ui/dialogs/error-dialog/main.js b/docs/fiddles/native-ui/dialogs/error-dialog/main.js
index 07612a621a548..7567aa411bda2 100644
--- a/docs/fiddles/native-ui/dialogs/error-dialog/main.js
+++ b/docs/fiddles/native-ui/dialogs/error-dialog/main.js
@@ -1,95 +1,95 @@
-// Modules to control application life and create native browser window
-const { app, BrowserWindow, ipcMain, dialog } = require('electron')
-
-// Keep a global reference of the window object, if you don't, the window will
-// be closed automatically when the JavaScript object is garbage collected.
-let mainWindow
-
-function createWindow () {
-  // Create the browser window.
-  mainWindow = new BrowserWindow({
-    width: 800,
-    height: 600,
-    webPreferences: {
-      nodeIntegration: true
-    }
-  })
-
-  // and load the index.html of the app.
-  mainWindow.loadFile('index.html')
-
-  // Open the DevTools.
-  // mainWindow.webContents.openDevTools()
-
-  // Emitted when the window is closed.
-  mainWindow.on('closed', function () {
-    // Dereference the window object, usually you would store windows
-    // in an array if your app supports multi windows, this is the time
-    // when you should delete the corresponding element.
-    mainWindow = null
-  })
-}
-
-// This method will be called when Electron has finished
-// initialization and is ready to create browser windows.
-// Some APIs can only be used after this event occurs.
-app.whenReady().then(createWindow)
-
-// Quit when all windows are closed.
-app.on('window-all-closed', function () {
-  // On macOS it is common for applications and their menu bar
-  // to stay active until the user quits explicitly with Cmd + Q
-  if (process.platform !== 'darwin') {
-    app.quit()
-  }
-})
-
-app.on('activate', function () {
-  // On macOS it is common to re-create a window in the app when the
-  // dock icon is clicked and there are no other windows open.
-  if (mainWindow === null) {
-    createWindow()
-  }
-})
-
-ipcMain.on('open-error-dialog', event => {
-  dialog.showErrorBox('An Error Message', 'Demonstrating an error message.')
-})
-
-ipcMain.on('open-information-dialog', event => {
-  const options = {
-    type: 'info',
-    title: 'Information',
-    message: "This is an information dialog. Isn't it nice?",
-    buttons: ['Yes', 'No']
-  }
-  dialog.showMessageBox(options, index => {
-    event.sender.send('information-dialog-selection', index)
-  })
-})
-
-ipcMain.on('open-file-dialog', event => {
-  dialog.showOpenDialog(
-    {
-      properties: ['openFile', 'openDirectory']
-    },
-    files => {
-      if (files) {
-        event.sender.send('selected-directory', files)
-      }
-    }
-  )
-})
-
-ipcMain.on('save-dialog', event => {
-  const options = {
-    title: 'Save an Image',
-    filters: [{ name: 'Images', extensions: ['jpg', 'png', 'gif'] }]
-  }
-  dialog.showSaveDialog(options, filename => {
-    event.sender.send('saved-file', filename)
-  })
-})
-
-// In this file you can include the rest of your app's specific main process
-// code. You can also put them in separate files and require them here.
+// Modules to control application life and create native browser window
+const { app, BrowserWindow, ipcMain, dialog } = require('electron')
+
+// Keep a global reference of the window object, if you don't, the window will
+// be closed automatically when the JavaScript object is garbage collected.
+let mainWindow
+
+function createWindow () {
+  // Create the browser window.
+  mainWindow = new BrowserWindow({
+    width: 800,
+    height: 600,
+    webPreferences: {
+      nodeIntegration: true
+    }
+  })
+
+  // and load the index.html of the app.
+  mainWindow.loadFile('index.html')
+
+  // Open the DevTools.
+  // mainWindow.webContents.openDevTools()
+
+  // Emitted when the window is closed.
+  mainWindow.on('closed', function () {
+    // Dereference the window object, usually you would store windows
+    // in an array if your app supports multi windows, this is the time
+    // when you should delete the corresponding element.
+    mainWindow = null
+  })
+}
+
+// This method will be called when Electron has finished
+// initialization and is ready to create browser windows.
+// Some APIs can only be used after this event occurs.
+app.whenReady().then(createWindow)
+
+// Quit when all windows are closed.
+app.on('window-all-closed', function () {
+  // On macOS it is common for applications and their menu bar
+  // to stay active until the user quits explicitly with Cmd + Q
+  if (process.platform !== 'darwin') {
+    app.quit()
+  }
+})
+
+app.on('activate', function () {
+  // On macOS it is common to re-create a window in the app when the
+  // dock icon is clicked and there are no other windows open.
+  if (mainWindow === null) {
+    createWindow()
+  }
+})
+
+ipcMain.on('open-error-dialog', event => {
+  dialog.showErrorBox('An Error Message', 'Demonstrating an error message.')
+})
+
+ipcMain.on('open-information-dialog', event => {
+  const options = {
+    type: 'info',
+    title: 'Information',
+    message: "This is an information dialog. Isn't it nice?",
+    buttons: ['Yes', 'No']
+  }
+  dialog.showMessageBox(options, index => {
+    event.sender.send('information-dialog-selection', index)
+  })
+})
+
+ipcMain.on('open-file-dialog', event => {
+  dialog.showOpenDialog(
+    {
+      properties: ['openFile', 'openDirectory']
+    },
+    files => {
+      if (files) {
+        event.sender.send('selected-directory', files)
+      }
+    }
+  )
+})
+
+ipcMain.on('save-dialog', event => {
+  const options = {
+    title: 'Save an Image',
+    filters: [{ name: 'Images', extensions: ['jpg', 'png', 'gif'] }]
+  }
+  dialog.showSaveDialog(options, filename => {
+    event.sender.send('saved-file', filename)
+  })
+})
+
+// In this file you can include the rest of your app's specific main process
+// code. You can also put them in separate files and require them here.
diff --git a/docs/fiddles/native-ui/dialogs/error-dialog/renderer.js b/docs/fiddles/native-ui/dialogs/error-dialog/renderer.js
index c61527b5043f5..4011066587dcb 100644
--- a/docs/fiddles/native-ui/dialogs/error-dialog/renderer.js
+++ b/docs/fiddles/native-ui/dialogs/error-dialog/renderer.js
@@ -1,18 +1,18 @@
-const { ipcRenderer, shell } = require('electron')
-
-const links = document.querySelectorAll('a[href]')
-const errorBtn = document.getElementById('error-dialog')
-
-errorBtn.addEventListener('click', event => {
-  ipcRenderer.send('open-error-dialog')
-})
-
-Array.prototype.forEach.call(links, (link) => {
-  const url = link.getAttribute('href')
-  if (url.indexOf('http') === 0) {
-    link.addEventListener('click', (e) => {
-      e.preventDefault()
-      shell.openExternal(url)
-    })
-  }
+const { ipcRenderer, shell } = require('electron')
+
+const links = document.querySelectorAll('a[href]')
+const errorBtn = document.getElementById('error-dialog')
+
+errorBtn.addEventListener('click', event => {
+  ipcRenderer.send('open-error-dialog')
+})
+
+Array.prototype.forEach.call(links, (link) => {
+  const url = link.getAttribute('href')
+  if (url.indexOf('http') === 0) {
+    link.addEventListener('click', (e) => {
+      e.preventDefault()
+      shell.openExternal(url)
+    })
+  }
 })
\ No newline at end of file
diff --git a/docs/fiddles/native-ui/dialogs/information-dialog/main.js b/docs/fiddles/native-ui/dialogs/information-dialog/main.js
index 71c9bafbe0d1a..3e81a5782076f 100644
--- a/docs/fiddles/native-ui/dialogs/information-dialog/main.js
+++ b/docs/fiddles/native-ui/dialogs/information-dialog/main.js
@@ -1,70 +1,70 @@
-// Modules to control application life and create native browser window
-const { app, BrowserWindow, ipcMain, dialog } = require('electron')
-
-// Keep a global reference of the window object, if you don't, the window will
-// be closed automatically when the JavaScript object is garbage collected.
-let mainWindow
-
-function createWindow () {
-  // Create the browser window.
-  mainWindow = new BrowserWindow({
-    width: 800,
-    height: 600,
-    webPreferences: {
-      nodeIntegration: true
-    }
-  })
-
-  // and load the index.html of the app.
-  mainWindow.loadFile('index.html')
-
-  // Open the DevTools.
-  // mainWindow.webContents.openDevTools()
-
-  // Emitted when the window is closed.
-  mainWindow.on('closed', function () {
-    // Dereference the window object, usually you would store windows
-    // in an array if your app supports multi windows, this is the time
-    // when you should delete the corresponding element.
-    mainWindow = null
-  })
-}
-
-// This method will be called when Electron has finished
-// initialization and is ready to create browser windows.
-// Some APIs can only be used after this event occurs.
-app.whenReady().then(createWindow)
-
-// Quit when all windows are closed.
-app.on('window-all-closed', function () {
-  // On macOS it is common for applications and their menu bar
-  // to stay active until the user quits explicitly with Cmd + Q
-  if (process.platform !== 'darwin') {
-    app.quit()
-  }
-})
-
-app.on('activate', function () {
-  // On macOS it is common to re-create a window in the app when the
-  // dock icon is clicked and there are no other windows open.
-  if (mainWindow === null) {
-    createWindow()
-  }
-})
-
-
-ipcMain.on('open-information-dialog', event => {
-  const options = {
-    type: 'info',
-    title: 'Information',
-    message: "This is an information dialog. Isn't it nice?",
-    buttons: ['Yes', 'No']
-  }
-  dialog.showMessageBox(options, index => {
-    event.sender.send('information-dialog-selection', index)
-  })
-})
-
-
-// In this file you can include the rest of your app's specific main process
-// code. You can also put them in separate files and require them here.
+// Modules to control application life and create native browser window
+const { app, BrowserWindow, ipcMain, dialog } = require('electron')
+
+// Keep a global reference of the window object, if you don't, the window will
+// be closed automatically when the JavaScript object is garbage collected.
+let mainWindow
+
+function createWindow () {
+  // Create the browser window.
+  mainWindow = new BrowserWindow({
+    width: 800,
+    height: 600,
+    webPreferences: {
+      nodeIntegration: true
+    }
+  })
+
+  // and load the index.html of the app.
+  mainWindow.loadFile('index.html')
+
+  // Open the DevTools.
+  // mainWindow.webContents.openDevTools()
+
+  // Emitted when the window is closed.
+  mainWindow.on('closed', function () {
+    // Dereference the window object, usually you would store windows
+    // in an array if your app supports multi windows, this is the time
+    // when you should delete the corresponding element.
+    mainWindow = null
+  })
+}
+
+// This method will be called when Electron has finished
+// initialization and is ready to create browser windows.
+// Some APIs can only be used after this event occurs.
+app.whenReady().then(createWindow)
+
+// Quit when all windows are closed.
+app.on('window-all-closed', function () {
+  // On macOS it is common for applications and their menu bar
+  // to stay active until the user quits explicitly with Cmd + Q
+  if (process.platform !== 'darwin') {
+    app.quit()
+  }
+})
+
+app.on('activate', function () {
+  // On macOS it is common to re-create a window in the app when the
+  // dock icon is clicked and there are no other windows open.
+  if (mainWindow === null) {
+    createWindow()
+  }
+})
+
+
+ipcMain.on('open-information-dialog', event => {
+  const options = {
+    type: 'info',
+    title: 'Information',
+    message: "This is an information dialog. Isn't it nice?",
+    buttons: ['Yes', 'No']
+  }
+  dialog.showMessageBox(options, index => {
+    event.sender.send('information-dialog-selection', index)
+  })
+})
+
+
+// In this file you can include the rest of your app's specific main process
+// code. You can also put them in separate files and require them here.
diff --git a/docs/fiddles/native-ui/dialogs/information-dialog/renderer.js b/docs/fiddles/native-ui/dialogs/information-dialog/renderer.js
index 32a5ff872363a..69ea9cdb1a2f2 100644
--- a/docs/fiddles/native-ui/dialogs/information-dialog/renderer.js
+++ b/docs/fiddles/native-ui/dialogs/information-dialog/renderer.js
@@ -1,25 +1,25 @@
-const { ipcRenderer, shell } = require('electron')
-
-const informationBtn = document.getElementById('information-dialog')
-const links = document.querySelectorAll('a[href]')
-
-informationBtn.addEventListener('click', event => {
-  ipcRenderer.send('open-information-dialog')
-})
-
-ipcRenderer.on('information-dialog-selection', (event, index) => {
-  let message = 'You selected '
-  if (index === 0) message += 'yes.'
-  else message += 'no.'
-  document.getElementById('info-selection').innerHTML = message
-})
-
-Array.prototype.forEach.call(links, (link) => {
-  const url = link.getAttribute('href')
-  if (url.indexOf('http') === 0) {
-    link.addEventListener('click', (e) => {
-      e.preventDefault()
-      shell.openExternal(url)
-    })
-  }
+const { ipcRenderer, shell } = require('electron')
+
+const informationBtn = document.getElementById('information-dialog')
+const links = document.querySelectorAll('a[href]')
+
+informationBtn.addEventListener('click', event => {
+  ipcRenderer.send('open-information-dialog')
+})
+
+ipcRenderer.on('information-dialog-selection', (event, index) => {
+  let message = 'You selected '
+  if (index === 0) message += 'yes.'
+  else message += 'no.'
+  document.getElementById('info-selection').innerHTML = message
+})
+
+Array.prototype.forEach.call(links, (link) => {
+  const url = link.getAttribute('href')
+  if (url.indexOf('http') === 0) {
+    link.addEventListener('click', (e) => {
+      e.preventDefault()
+      shell.openExternal(url)
+    })
+  }
 })
\ No newline at end of file
diff --git a/docs/fiddles/native-ui/dialogs/open-file-or-directory/main.js b/docs/fiddles/native-ui/dialogs/open-file-or-directory/main.js
index c47083dfe46b2..24b9164dab3a9 100644
--- a/docs/fiddles/native-ui/dialogs/open-file-or-directory/main.js
+++ b/docs/fiddles/native-ui/dialogs/open-file-or-directory/main.js
@@ -1,70 +1,70 @@
-// Modules to control application life and create native browser window
-const { app, BrowserWindow, ipcMain, dialog } = require('electron')
-
-// Keep a global reference of the window object, if you don't, the window will
-// be closed automatically when the JavaScript object is garbage collected.
-let mainWindow
-
-function createWindow () {
-  // Create the browser window.
-  mainWindow = new BrowserWindow({
-    width: 800,
-    height: 600,
-    webPreferences: {
-      nodeIntegration: true
-    }
-  })
-
-  // and load the index.html of the app.
-  mainWindow.loadFile('index.html')
-
-  // Open the DevTools.
-  // mainWindow.webContents.openDevTools()
-
-  // Emitted when the window is closed.
-  mainWindow.on('closed', function () {
-    // Dereference the window object, usually you would store windows
-    // in an array if your app supports multi windows, this is the time
-    // when you should delete the corresponding element.
-    mainWindow = null
-  })
-}
-
-// This method will be called when Electron has finished
-// initialization and is ready to create browser windows.
-// Some APIs can only be used after this event occurs.
-app.whenReady().then(createWindow)
-
-// Quit when all windows are closed.
-app.on('window-all-closed', function () {
-  // On macOS it is common for applications and their menu bar
-  // to stay active until the user quits explicitly with Cmd + Q
-  if (process.platform !== 'darwin') {
-    app.quit()
-  }
-})
-
-app.on('activate', function () {
-  // On macOS it is common to re-create a window in the app when the
-  // dock icon is clicked and there are no other windows open.
-  if (mainWindow === null) {
-    createWindow()
-  }
-})
-
-
-ipcMain.on('open-file-dialog', event => {
-  dialog.showOpenDialog(
-    {
-      properties: ['openFile', 'openDirectory']
-    },
-    files => {
-      if (files) {
-        event.sender.send('selected-directory', files)
-      }
-    }
-  )
-})
-
-// In this file you can include the rest of your app's specific main process
-// code. You can also put them in separate files and require them here.
+// Modules to control application life and create native browser window
+const { app, BrowserWindow, ipcMain, dialog } = require('electron')
+
+// Keep a global reference of the window object, if you don't, the window will
+// be closed automatically when the JavaScript object is garbage collected.
+let mainWindow
+
+function createWindow () {
+  // Create the browser window.
+  mainWindow = new BrowserWindow({
+    width: 800,
+    height: 600,
+    webPreferences: {
+      nodeIntegration: true
+    }
+  })
+
+  // and load the index.html of the app.
+  mainWindow.loadFile('index.html')
+
+  // Open the DevTools.
+  // mainWindow.webContents.openDevTools()
+
+  // Emitted when the window is closed.
+  mainWindow.on('closed', function () {
+    // Dereference the window object, usually you would store windows
+    // in an array if your app supports multi windows, this is the time
+    // when you should delete the corresponding element.
+    mainWindow = null
+  })
+}
+
+// This method will be called when Electron has finished
+// initialization and is ready to create browser windows.
+// Some APIs can only be used after this event occurs.
+app.whenReady().then(createWindow)
+
+// Quit when all windows are closed.
+app.on('window-all-closed', function () {
+  // On macOS it is common for applications and their menu bar
+  // to stay active until the user quits explicitly with Cmd + Q
+  if (process.platform !== 'darwin') {
+    app.quit()
+  }
+})
+
+app.on('activate', function () {
+  // On macOS it is common to re-create a window in the app when the
+  // dock icon is clicked and there are no other windows open.
+  if (mainWindow === null) {
+    createWindow()
+  }
+})
+
+
+ipcMain.on('open-file-dialog', event => {
+  dialog.showOpenDialog(
+    {
+      properties: ['openFile', 'openDirectory']
+    },
+    files => {
+      if (files) {
+        event.sender.send('selected-directory', files)
+      }
+    }
+  )
+})
+
+// In this file you can include the rest of your app's specific main process
+// code. You can also put them in separate files and require them here.
diff --git a/docs/fiddles/native-ui/dialogs/open-file-or-directory/renderer.js b/docs/fiddles/native-ui/dialogs/open-file-or-directory/renderer.js
index 25953b2267f0f..5389ea50709a0 100644
--- a/docs/fiddles/native-ui/dialogs/open-file-or-directory/renderer.js
+++ b/docs/fiddles/native-ui/dialogs/open-file-or-directory/renderer.js
@@ -1,22 +1,22 @@
-const { ipcRenderer, shell } = require('electron')
-
-const selectDirBtn = document.getElementById('select-directory')
-const links = document.querySelectorAll('a[href]')
-
-selectDirBtn.addEventListener('click', event => {
-  ipcRenderer.send('open-file-dialog')
-})
-
-ipcRenderer.on('selected-directory', (event, path) => {
-  document.getElementById('selected-file').innerHTML = `You selected: ${path}`
-})
-
-Array.prototype.forEach.call(links, (link) => {
-  const url = link.getAttribute('href')
-  if (url.indexOf('http') === 0) {
-    link.addEventListener('click', (e) => {
-      e.preventDefault()
-      shell.openExternal(url)
-    })
-  }
-})
+const { ipcRenderer, shell } = require('electron')
+
+const selectDirBtn = document.getElementById('select-directory')
+const links = document.querySelectorAll('a[href]')
+
+selectDirBtn.addEventListener('click', event => {
+  ipcRenderer.send('open-file-dialog')
+})
+
+ipcRenderer.on('selected-directory', (event, path) => {
+  document.getElementById('selected-file').innerHTML = `You selected: ${path}`
+})
+
+Array.prototype.forEach.call(links, (link) => {
+  const url = link.getAttribute('href')
+  if (url.indexOf('http') === 0) {
+    link.addEventListener('click', (e) => {
+      e.preventDefault()
+      shell.openExternal(url)
+    })
+  }
+})
diff --git a/docs/fiddles/native-ui/dialogs/save-dialog/main.js b/docs/fiddles/native-ui/dialogs/save-dialog/main.js
index 16d222825e831..b6e6ec1331be9 100644
--- a/docs/fiddles/native-ui/dialogs/save-dialog/main.js
+++ b/docs/fiddles/native-ui/dialogs/save-dialog/main.js
@@ -1,66 +1,66 @@
-// Modules to control application life and create native browser window
-const { app, BrowserWindow, ipcMain, dialog } = require('electron')
-
-// Keep a global reference of the window object, if you don't, the window will
-// be closed automatically when the JavaScript object is garbage collected.
-let mainWindow
-
-function createWindow () {
-  // Create the browser window.
-  mainWindow = new BrowserWindow({
-    width: 800,
-    height: 600,
-    webPreferences: {
-      nodeIntegration: true
-    }
-  })
-
-  // and load the index.html of the app.
-  mainWindow.loadFile('index.html')
-
-  // Open the DevTools.
-  // mainWindow.webContents.openDevTools()
-
-  // Emitted when the window is closed.
-  mainWindow.on('closed', function () {
-    // Dereference the window object, usually you would store windows
-    // in an array if your app supports multi windows, this is the time
-    // when you should delete the corresponding element.
-    mainWindow = null
-  })
-}
-
-// This method will be called when Electron has finished
-// initialization and is ready to create browser windows.
-// Some APIs can only be used after this event occurs.
-app.whenReady().then(createWindow)
-
-// Quit when all windows are closed.
-app.on('window-all-closed', function () {
-  // On macOS it is common for applications and their menu bar
-  // to stay active until the user quits explicitly with Cmd + Q
-  if (process.platform !== 'darwin') {
-    app.quit()
-  }
-})
-
-app.on('activate', function () {
-  // On macOS it is common to re-create a window in the app when the
-  // dock icon is clicked and there are no other windows open.
-  if (mainWindow === null) {
-    createWindow()
-  }
-})
-
-ipcMain.on('save-dialog', event => {
-  const options = {
-    title: 'Save an Image',
-    filters: [{ name: 'Images', extensions: ['jpg', 'png', 'gif'] }]
-  }
-  dialog.showSaveDialog(options, filename => {
-    event.sender.send('saved-file', filename)
-  })
-})
-
-// In this file you can include the rest of your app's specific main process
-// code. You can also put them in separate files and require them here.
+// Modules to control application life and create native browser window
+const { app, BrowserWindow, ipcMain, dialog } = require('electron')
+
+// Keep a global reference of the window object, if you don't, the window will
+// be closed automatically when the JavaScript object is garbage collected.
+let mainWindow
+
+function createWindow () {
+  // Create the browser window.
+  mainWindow = new BrowserWindow({
+    width: 800,
+    height: 600,
+    webPreferences: {
+      nodeIntegration: true
+    }
+  })
+
+  // and load the index.html of the app.
+  mainWindow.loadFile('index.html')
+
+  // Open the DevTools.
+  // mainWindow.webContents.openDevTools()
+
+  // Emitted when the window is closed.
+  mainWindow.on('closed', function () {
+    // Dereference the window object, usually you would store windows
+    // in an array if your app supports multi windows, this is the time
+    // when you should delete the corresponding element.
+    mainWindow = null
+  })
+}
+
+// This method will be called when Electron has finished
+// initialization and is ready to create browser windows.
+// Some APIs can only be used after this event occurs.
+app.whenReady().then(createWindow)
+
+// Quit when all windows are closed.
+app.on('window-all-closed', function () {
+  // On macOS it is common for applications and their menu bar
+  // to stay active until the user quits explicitly with Cmd + Q
+  if (process.platform !== 'darwin') {
+    app.quit()
+  }
+})
+
+app.on('activate', function () {
+  // On macOS it is common to re-create a window in the app when the
+  // dock icon is clicked and there are no other windows open.
+  if (mainWindow === null) {
+    createWindow()
+  }
+})
+
+ipcMain.on('save-dialog', event => {
+  const options = {
+    title: 'Save an Image',
+    filters: [{ name: 'Images', extensions: ['jpg', 'png', 'gif'] }]
+  }
+  dialog.showSaveDialog(options, filename => {
+    event.sender.send('saved-file', filename)
+  })
+})
+
+// In this file you can include the rest of your app's specific main process
+// code. You can also put them in separate files and require them here.
diff --git a/docs/fiddles/native-ui/dialogs/save-dialog/renderer.js b/docs/fiddles/native-ui/dialogs/save-dialog/renderer.js
index aad625d8445b0..9f6da5546946d 100644
--- a/docs/fiddles/native-ui/dialogs/save-dialog/renderer.js
+++ b/docs/fiddles/native-ui/dialogs/save-dialog/renderer.js
@@ -1,23 +1,23 @@
-const { ipcRenderer, shell } = require('electron')
-
-const saveBtn = document.getElementById('save-dialog')
-const links = document.querySelectorAll('a[href]')
-
-saveBtn.addEventListener('click', event => {
-  ipcRenderer.send('save-dialog')
-})
-
-ipcRenderer.on('saved-file', (event, path) => {
-  if (!path) path = 'No path'
-  document.getElementById('file-saved').innerHTML = `Path selected: ${path}`
-})
-
-Array.prototype.forEach.call(links, (link) => {
-  const url = link.getAttribute('href')
-  if (url.indexOf('http') === 0) {
-    link.addEventListener('click', (e) => {
-      e.preventDefault()
-      shell.openExternal(url)
-    })
-  }
+const { ipcRenderer, shell } = require('electron')
+
+const saveBtn = document.getElementById('save-dialog')
+const links = document.querySelectorAll('a[href]')
+
+saveBtn.addEventListener('click', event => {
+  ipcRenderer.send('save-dialog')
+})
+
+ipcRenderer.on('saved-file', (event, path) => {
+  if (!path) path = 'No path'
+  document.getElementById('file-saved').innerHTML = `Path selected: ${path}`
+})
+
+Array.prototype.forEach.call(links, (link) => {
+  const url = link.getAttribute('href')
+  if (url.indexOf('http') === 0) {
+    link.addEventListener('click', (e) => {
+      e.preventDefault()
+      shell.openExternal(url)
+    })
+  }
 })
\ No newline at end of file
diff --git a/docs/fiddles/native-ui/external-links-file-manager/main.js b/docs/fiddles/native-ui/external-links-file-manager/main.js
index 66313f6abc236..6291dcad9c993 100644
--- a/docs/fiddles/native-ui/external-links-file-manager/main.js
+++ b/docs/fiddles/native-ui/external-links-file-manager/main.js
@@ -1,56 +1,56 @@
-// Modules to control application life and create native browser window
-const { app, BrowserWindow } = require('electron')
-
-// Keep a global reference of the window object, if you don't, the window will
-// be closed automatically when the JavaScript object is garbage collected.
-let mainWindow
-
-function createWindow () {
-  // Create the browser window.
-  mainWindow = new BrowserWindow({
-    width: 800,
-    height: 600,
-    webPreferences: {
-      nodeIntegration: true
-    }
-  })
-
-  // and load the index.html of the app.
-  mainWindow.loadFile('index.html')
-
-  // Open the DevTools.
-  // mainWindow.webContents.openDevTools()
-
-  // Emitted when the window is closed.
-  mainWindow.on('closed', function () {
-    // Dereference the window object, usually you would store windows
-    // in an array if your app supports multi windows, this is the time
-    // when you should delete the corresponding element.
-    mainWindow = null
-  })
-}
-
-// This method will be called when Electron has finished
-// initialization and is ready to create browser windows.
-// Some APIs can only be used after this event occurs.
-app.whenReady().then(createWindow)
-
-// Quit when all windows are closed.
-app.on('window-all-closed', function () {
-  // On macOS it is common for applications and their menu bar
-  // to stay active until the user quits explicitly with Cmd + Q
-  if (process.platform !== 'darwin') {
-    app.quit()
-  }
-})
-
-app.on('activate', function () {
-  // On macOS it is common to re-create a window in the app when the
-  // dock icon is clicked and there are no other windows open.
-  if (mainWindow === null) {
-    createWindow()
-  }
-})
-
-// In this file you can include the rest of your app's specific main process
+// Modules to control application life and create native browser window
+const { app, BrowserWindow } = require('electron')
+
+// Keep a global reference of the window object, if you don't, the window will
+// be closed automatically when the JavaScript object is garbage collected.
+let mainWindow
+
+function createWindow () {
+  // Create the browser window.
+  mainWindow = new BrowserWindow({
+    width: 800,
+    height: 600,
+    webPreferences: {
+      nodeIntegration: true
+    }
+  })
+
+  // and load the index.html of the app.
+  mainWindow.loadFile('index.html')
+
+  // Open the DevTools.
+  // mainWindow.webContents.openDevTools()
+
+  // Emitted when the window is closed.
+  mainWindow.on('closed', function () {
+    // Dereference the window object, usually you would store windows
+    // in an array if your app supports multi windows, this is the time
+    // when you should delete the corresponding element.
+    mainWindow = null
+  })
+}
+
+// This method will be called when Electron has finished
+// initialization and is ready to create browser windows.
+// Some APIs can only be used after this event occurs.
+app.whenReady().then(createWindow)
+
+// Quit when all windows are closed.
+app.on('window-all-closed', function () {
+  // On macOS it is common for applications and their menu bar
+  // to stay active until the user quits explicitly with Cmd + Q
+  if (process.platform !== 'darwin') {
+    app.quit()
+  }
+})
+
+app.on('activate', function () {
+  // On macOS it is common to re-create a window in the app when the
+  // dock icon is clicked and there are no other windows open.
+  if (mainWindow === null) {
+    createWindow()
+  }
+})
+
+// In this file you can include the rest of your app's specific main process
 // code. You can also put them in separate files and require them here.
diff --git a/docs/fiddles/native-ui/external-links-file-manager/renderer.js b/docs/fiddles/native-ui/external-links-file-manager/renderer.js
index 29c2529fa339a..5ce5bae2da3aa 100644
--- a/docs/fiddles/native-ui/external-links-file-manager/renderer.js
+++ b/docs/fiddles/native-ui/external-links-file-manager/renderer.js
@@ -1,13 +1,13 @@
-const { shell } = require('electron')
-const os = require('os')
-
-const exLinksBtn = document.getElementById('open-ex-links')
-const fileManagerBtn = document.getElementById('open-file-manager')
-
-fileManagerBtn.addEventListener('click', (event) => {
-  shell.showItemInFolder(os.homedir())
-})
-
-exLinksBtn.addEventListener('click', (event) => {
-  shell.openExternal('https://electronjs.org')
+const { shell } = require('electron')
+const os = require('os')
+
+const exLinksBtn = document.getElementById('open-ex-links')
+const fileManagerBtn = document.getElementById('open-file-manager')
+
+fileManagerBtn.addEventListener('click', (event) => {
+  shell.showItemInFolder(os.homedir())
+})
+
+exLinksBtn.addEventListener('click', (event) => {
+  shell.openExternal('https://electronjs.org')
 })
diff --git a/docs/fiddles/native-ui/notifications/main.js b/docs/fiddles/native-ui/notifications/main.js
index 66313f6abc236..6291dcad9c993 100644
--- a/docs/fiddles/native-ui/notifications/main.js
+++ b/docs/fiddles/native-ui/notifications/main.js
@@ -1,56 +1,56 @@
-// Modules to control application life and create native browser window
-const { app, BrowserWindow } = require('electron')
-
-// Keep a global reference of the window object, if you don't, the window will
-// be closed automatically when the JavaScript object is garbage collected.
-let mainWindow
-
-function createWindow () {
-  // Create the browser window.
-  mainWindow = new BrowserWindow({
-    width: 800,
-    height: 600,
-    webPreferences: {
-      nodeIntegration: true
-    }
-  })
-
-  // and load the index.html of the app.
-  mainWindow.loadFile('index.html')
-
-  // Open the DevTools.
-  // mainWindow.webContents.openDevTools()
-
-  // Emitted when the window is closed.
-  mainWindow.on('closed', function () {
-    // Dereference the window object, usually you would store windows
-    // in an array if your app supports multi windows, this is the time
-    // when you should delete the corresponding element.
-    mainWindow = null
-  })
-}
-
-// This method will be called when Electron has finished
-// initialization and is ready to create browser windows.
-// Some APIs can only be used after this event occurs.
-app.whenReady().then(createWindow)
-
-// Quit when all windows are closed.
-app.on('window-all-closed', function () {
-  // On macOS it is common for applications and their menu bar
-  // to stay active until the user quits explicitly with Cmd + Q
-  if (process.platform !== 'darwin') {
-    app.quit()
-  }
-})
-
-app.on('activate', function () {
-  // On macOS it is common to re-create a window in the app when the
-  // dock icon is clicked and there are no other windows open.
-  if (mainWindow === null) {
-    createWindow()
-  }
-})
-
-// In this file you can include the rest of your app's specific main process
+// Modules to control application life and create native browser window
+const { app, BrowserWindow } = require('electron')
+
+// Keep a global reference of the window object, if you don't, the window will
+// be closed automatically when the JavaScript object is garbage collected.
+let mainWindow
+
+function createWindow () {
+  // Create the browser window.
+  mainWindow = new BrowserWindow({
+    width: 800,
+    height: 600,
+    webPreferences: {
+      nodeIntegration: true
+    }
+  })
+
+  // and load the index.html of the app.
+  mainWindow.loadFile('index.html')
+
+  // Open the DevTools.
+  // mainWindow.webContents.openDevTools()
+
+  // Emitted when the window is closed.
+  mainWindow.on('closed', function () {
+    // Dereference the window object, usually you would store windows
+    // in an array if your app supports multi windows, this is the time
+    // when you should delete the corresponding element.
+    mainWindow = null
+  })
+}
+
+// This method will be called when Electron has finished
+// initialization and is ready to create browser windows.
+// Some APIs can only be used after this event occurs.
+app.whenReady().then(createWindow)
+
+// Quit when all windows are closed.
+app.on('window-all-closed', function () {
+  // On macOS it is common for applications and their menu bar
+  // to stay active until the user quits explicitly with Cmd + Q
+  if (process.platform !== 'darwin') {
+    app.quit()
+  }
+})
+
+app.on('activate', function () {
+  // On macOS it is common to re-create a window in the app when the
+  // dock icon is clicked and there are no other windows open.
+  if (mainWindow === null) {
+    createWindow()
+  }
+})
+
+// In this file you can include the rest of your app's specific main process
 // code. You can also put them in separate files and require them here.
diff --git a/docs/fiddles/native-ui/notifications/renderer.js b/docs/fiddles/native-ui/notifications/renderer.js
index b4dfdf0364604..9a97f7a869e03 100644
--- a/docs/fiddles/native-ui/notifications/renderer.js
+++ b/docs/fiddles/native-ui/notifications/renderer.js
@@ -1,29 +1,29 @@
-const basicNotification = {
-  title: 'Basic Notification',
-  body: 'Short message part'
-}
-
-const notification = {
-  title: 'Notification with image',
-  body: 'Short message plus a custom image',
-  icon: 'https://via.placeholder.com/150'
-}
-
-const basicNotificationButton = document.getElementById('basic-noti')
-const notificationButton = document.getElementById('advanced-noti')
-
-notificationButton.addEventListener('click', () => {
-  const myNotification = new window.Notification(notification.title, notification)
-
-  myNotification.onclick = () => {
-    console.log('Notification clicked')
-  }
-})
-
-basicNotificationButton.addEventListener('click', () => {
-  const myNotification = new window.Notification(basicNotification.title, basicNotification)
-
-  myNotification.onclick = () => {
-    console.log('Notification clicked')
-  }
-})
+const basicNotification = {
+  title: 'Basic Notification',
+  body: 'Short message part'
+}
+
+const notification = {
+  title: 'Notification with image',
+  body: 'Short message plus a custom image',
+  icon: 'https://via.placeholder.com/150'
+}
+
+const basicNotificationButton = document.getElementById('basic-noti')
+const notificationButton = document.getElementById('advanced-noti')
+
+notificationButton.addEventListener('click', () => {
+  const myNotification = new window.Notification(notification.title, notification)
+
+  myNotification.onclick = () => {
+    console.log('Notification clicked')
+  }
+})
+
+basicNotificationButton.addEventListener('click', () => {
+  const myNotification = new window.Notification(basicNotification.title, basicNotification)
+
+  myNotification.onclick = () => {
+    console.log('Notification clicked')
+  }
+})
diff --git a/docs/fiddles/native-ui/tray/main.js b/docs/fiddles/native-ui/tray/main.js
index b110266929890..9a94efe327315 100644
--- a/docs/fiddles/native-ui/tray/main.js
+++ b/docs/fiddles/native-ui/tray/main.js
@@ -1,77 +1,77 @@
-// Modules to control application life and create native browser window
-const { ipcMain, app, nativeImage, Menu, Tray, BrowserWindow } = require('electron')
-
-// Keep a global reference of the window object, if you don't, the window will
-// be closed automatically when the JavaScript object is garbage collected.
-let mainWindow
-let appIcon = null
-
-function createWindow () {
-  // Create the browser window.
-  mainWindow = new BrowserWindow({
-    width: 800,
-    height: 600,
-    webPreferences: {
-      nodeIntegration: true
-    }
-  })
-
-  // and load the index.html of the app.
-  mainWindow.loadFile('index.html')
-
-  // Open the DevTools.
-  // mainWindow.webContents.openDevTools()
-
-  // Emitted when the window is closed.
-  mainWindow.on('closed', function () {
-    // Dereference the window object, usually you would store windows
-    // in an array if your app supports multi windows, this is the time
-    // when you should delete the corresponding element.
-    mainWindow = null
-  })
-}
-
-// This method will be called when Electron has finished
-// initialization and is ready to create browser windows.
-// Some APIs can only be used after this event occurs.
-app.whenReady().then(createWindow)
-
-// Quit when all windows are closed.
-app.on('window-all-closed', function () {
-  // On macOS it is common for applications and their menu bar
-  // to stay active until the user quits explicitly with Cmd + Q
-  if (process.platform !== 'darwin') {
-    app.quit()
-  }
-})
-
-app.on('activate', function () {
-  // On macOS it is common to re-create a window in the app when the
-  // dock icon is clicked and there are no other windows open.
-  if (mainWindow === null) {
-    createWindow()
-  }
-})
-
-ipcMain.on('put-in-tray', (event) => {
-  const icon = nativeImage.createFromDataURL('data:image/png;base64,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4bipGBQCAjci2CaAkvweWnOfPByZLIZR8P1M7tlV09lzH6xgAAKRhYXtVvr83hxUArHeBreF7/5h9qSspQwDrFlij0HPvjm3zFa+fDwBAWrbN+a1qiwIrWmoB2AgSAAA2pBj5PQYwM8NNAACA8TAz7TcBMLz+DwDWjwQAgA0pRH4XG5VyqFIpB6eTAAC4BpVyqHLZ7/eZ7948AMbPmK+y6QEAbLWS5wSAtUY7tpd1+MiK13EAAPBp50LF+5XXxciItS4wSpKsA6ACAMDGpPG2Yfu2svcxAADwKY2eNiWuAASwQcwaADYkDIwiz1cazXEVIABgxPn+LiuERgEdAAFsUPZHALgFEBg5pciqP4i9ff50syRrpITnFwAwgqw1mmoWvK5Di6FlnQtsNd/7x+xPAFABAGDjyp6PAYSh1dwsVQAAgNG0fb6sIPC7zC5T/g9gEzKuAPCdYqEEAPChVPDfdGj3zppOn+14HQMAAB92LVTk+3tyeP6fdS6wtcZ//0jqEMCGFUIr38cOd9AIEAAwonYsVL1+vjVSMWIZD2DjmDkAbJgx/jsPz82WFYY0NwIAjJYwsJqeKnodg+7/ADaL2QPApvi+DtAGRju3+79CCQCArbRrR1WB59tyfPfiATC+SAAA2JQ0mg/t2lnzPgYAAFtp907/yWsqAABsVvbXANIEEBhJw8VHIsnfW47t89wEAAAYLQvbfDcAdDQABLxJo0l9tkgfAtgUa6RS5LcEsdksqFSizBEAMBrK5VD1ut/3a+VC6L0RL4DxRQIAwKaVi36nEGuM9uziGAAAYDTs3VWRMZ7P/3v+7gUw3phBAGxapej/7fwuz1cpAQCwVXbu8P+dVSEBAOAaZNsDIEkk5/EchHN+Px+YcOXIysh5fcy2z/m9SgkAgK1gjLR9rux17WmNUSm0rG8BX3zvH3NwfIcUIoBNM8b/VUSVSqh5kgAAgJzbPlf23remVDDyfMIAwJgjAQDgmqRRinjDdXXvYwAAcC2u3+v/u6paysEFXgBGGgkAANckjcXInp00AgQA5NvuHRXvY3D+H8C1YhYBcE0KoVHg+T6iRj1SsxF5HQMAgM2aakSq1/x+TwXWqBCydAdwbXJQR+SziYnz/PkApOEbiZX2wOsYN+6t65v7znsdAwCAzbjp+oZ8rzmrpcD7GAB87x+zf4ZJIwK4ZmmUJO7ZyXWAAIB82rMrjfJ//1fvAhh/JAAAXLOq567HkjQ9XVSlzOIHAJAv1UqoZtP/bTWc/wewFZhJAFyzwBqVIr/TiTXcBgAAyJ8br6vJcysclQvWe78dAJOBBACALVFL4e38dSmUWAIAsBF7dvk/olYr56BtF4CxkPFsknj+fJoAAmmplQOdXe57HWN+rqxSMVCnG3sdBwCA9SiVrObn/Jf/10pWrGmBNIz/c0YFAIAtEQVGhdBveWIQGN18A8cAAAD5cMv1dVnrdzldjIzCgPJ/AFsj+3oibgEExkatFOj8it/rAG/aW9Mz+xe9jgEAwHrctLfhfa1ZK4asZ4G0+N4/+i6AXwcqAABsmWoKVxRNTxVVr2WfuwQATLZGPdTUVMH7ONUSy3UAW4cZBcCWKRWsQs85AGOMbr+p6XcQAACu4vabmjLGb2l+GEhFz7fsAJgsOXiN5rumiZopIE3VktVSy2+Tvhuuq+qxp855HQMAgCvZu6cq3+vMWin0PgaA1xv/MwCkFAFsqeFixa9qNdK2FLouAwBwKTvmS6pVI+/jpHHFLoDJQgIAwJYqF6yCFGaW225s+B8EAIBLuPkm/zfSBFYqUf4PYIsxqwDYUsZI9bL/KoA9u6qy3IoEAEiZtUbX7ap6H6dRCeW5xQCACZRxDwDfZyy4BxDIQr1stdjy++wVi1Z7d1d1+KWW13EAAHi9G66rqRBZ+V5j1sv+xwDwRuO/f6QCAMCWKxWsotD/a4vbbuYYAAAgXbfdVPM+RhQauv8D8IKZBYAX9RQaF22fL6lR89+ECQAASWrUIs3PlfyPk8JROgCTiQQAAC8aFf+LF2uN7riVKgAAQDruvqMpm8LB/HqF7v8A/Mg2vUgLAGBsRdaoGFp1+37vO71pb02PP3leccLDDgDwJwiMbthT9b62LBetImtYwwJZ8L1/zEFjz4zrixKRAQDGV6NidWYp9jpGsWB1681TOvAizQABAP7cekM1peZ/gfcxAFzO+O8fOWAEwJt6OdCZpb73cf7OD9yuO/7+T3sfBwAwuZonPy61T3sfp1bihC4Af5hhAHgTWKNK0f8041onFPXOeR8HADCZov55uTX/m/9qKVBgc1AjDGBskQAA4FWz6r/QyBijwuqz3scBAEymwvLTSqH3nxo0/wPgGQkAAF5Vi4GCFGaaaPUFKen5HwgAMFnirqLWYe/DBHb4nQkAPuWgBwBNAIFxZszwjcaF1YHXcVzcVbm1X+3693gdBwAwWcqt5+Ri/wnmZjWUMaxbgez53p9miwoAAN41q6Gc8z/hRYv7ZHIwsQIAxoORU7T0jPdxnHNqVnLwXg7A2CMBAMC7KDCqllLoBTBYVWntgPdxAACTobS6X2bg/5rZWjlUGND8D4B/JAAApKJZTedcY2HpSeWhvAoAMOqcCiv7UhmpSfM/ACnJuNYo8fz59AAA8qJatAqsFPt+7DsXVOwcUbd0veeBAADjrNg+LHUueB8nDPTKlbmsWYHsjf9zSAUAgFQYk86VgJJUXHoqlXEAAOOrtPRkKuMMm/+lMhQAZF0B4BkFAECuNEpW55edfK90zNpJRd0T6hd3eB0HADCeCr0TUvuM/4GcU6MUsF4F8sL3s+i7EnYdqAAAkJootKqW0jnnWF5O580NAGD8lBafSGWcaimg+R+AVJEAAJCqqZSaAZqVo4r6/s9uAgDGS9i/ILN6LJWxpmvjXYwLIH9yMOv4rLPgDACQN5WiVTGUugPPz6aRSsvfUH/2x/2OAwAYK+XFxyTjf/1YiqzKBSPWqkCejP/+kQoAAKlL642HXT6oaHA+lbEAAKMv6l+QWXkhlbHSqogDgNfLQQUAgElTKwWKgoH6cQpvWC48qsG293gfBwAw+sqLX0ulI38UGNVS6okDAK9HAgBA6owZvvk4szzwPpZdeVHX3RnK1vd4HwsAMLqS5SNaPHRESiEBMF3j6j8A2eAIAIBMNCuhApvC6sdI7YP3+x8HADDS2gc/k8rmP7BGjTJv/wFkI+MKAN9NFsa/iQMwqoyRGmWjCy3/F6J2zx9QZfGAzNQt3scCAIyeZPGguhfSOfvfrAQyKTQZBLAZvveP2Zf+UAEAIDNT1TC1aXDt0GdTGgkAMGrW0qoUc07NCm//AWSHBACAzISBUa2UzjTUXTyqwZlnUxkLADA6krNPq7d0NJWxmtVQYZD9G0AAkyvbIwCJOAEATLiZWqTltY5MCt2Q2i/cr/r8ncpD+RUAIA+c1g49mNJ60WmqErI2BfJs/E8AUAEAIFuF0KhRSScX2V85pcHJJ1IZCwCQf/Gpx9VbOZXKWI1yqEKYg9U/gImWg2sAKQEAJt1MLdBK2/+VgJLUOvApNbe9SbKFVMYDAORU0lPrwGeV1lpxuhakNhaAzUqjSX22qAAAkLlCaFRP6UqkuLui7uGHUhkLAJBf3Rce0KCzlMpY9ZLl7T+AXCABACAXZuvpFSStHfmykva51MYDAORL0j6vtaNfSW282UaU2lgAcCUkAADkQhQYNVKqAnBJX90DH09lLABA/nQPfEwu6acyVqMcKKLzP4CcyLgHANcAAHjNTD3Qckq9ANZOPaviuW/Jzt6ZyngAgHxIzj2n9unnUhtvps7Zf2B0jP81AFQAAMiNNKsAjDFa/fYnJBenMh4AIAdcotbzn0xtuGaFt/8A8oUEAIBcSbMXwGDtrPrHvpjaeACAbPWOPqx+63Rq483UcnDhFgC8DgkAALkSplgFIEmtQw9LvZXUxgMAZKS3rNYLn09tuGYlUMjbfwA5QwIAQO7M1sPUTkglg446B9MrBwUAZKNz4BNycTeVsawxvP0HkEtjPjPRBBAYRWEgzdRDnVtJpyFg6/g3FG17i4K5u1IZDwCQruT8fq2deDK18aZrVmEgsQ4FRo3vZzbx/PlXl30CgEsAAFzCVNlqqSUNUujRZ2R05sn/oK8kP6ZBDqZFAMDWCTXQ99v/T8WU1oRhIE1XQtagwKjyvT/NGCtdALlkrdFsLdSppXSqAAquq9vMPn2z96ZUxgMApOOuwtMquk5q483VQxmO/gPIKXoAAMitRiVQKUpvFbXgjmpbcC618QAAfm0Lz2vBvZTaeKXIqJ5iI1sA2CgSAAByba6RXqGSMUZ3B/tklcK5AwCAV9bFuts+LZPi6/g0v7MAYDNyMEvRBADA5ZULRtWi1Oqm8yyX1NJd0be1r39nKuMBAPx4U3G/SmqlNl69bFUuGLH2BEbZ+O8fqQAAkHvzzUhpTsa7zGHNhYupjQcA2FozdlE79WJq4xkjzdWj1MYDgM0iAQAg96LAaKqa3plKK+lNwZMyObiqBQCwMVZO3xM9pTT78E1Vgleu/QOAfCMBAGAkzNYjBSnOWGXX0t3R/vQGBABsibui51Rxq6mNF1hppp6DU7UAsA4Zz1aJ/Jf1jvcZDmBSWCPNN0KdXOynNuZuHdLZcE4nBttSGxMAsHnbg7PabV5Idcz5RihrWG8C48F3D4Ds7wilAgDAyKiXrarF9KYtY4zutk+pZLqpjQkA2Jyy7ekt0TdTXV5Xi5Zr/wCMFBIAAEbKtmakFG90UqSu3l78pqgmAoA8c3pL+E0FSXoJW2Ok+Sal/wBGS7azFicAAGxQaKXZWqizy4PUxmzEZ3VrdEjP929ObUwAwPrdHh3StDuT6piz9VCRNaw1gXEy/icAqAAAMHqmKoEKYboz6E3m25oJuBoQAPJm2i7rRvN8qmMWQqOpCqX/AEZPDuqWfKZYfKdwAGTBGGn7VKijZ7oyKZ0HMM7prcE39IX4hzXIw9QJAFCovt4aPi65OLUxnXPaPlWUofEfMKZ870+zRQUAgJFUioyaKb99Kbg1vTl6OtUxAQCX972FfSq6VqpjTlVDlaIc1PECwCaQAAAwsuabkYKUZ7HtOq694UvpDgoA+C43hEc1746nOmZgpbkGVWAARhczGICRZc3wVoATF/qpjnt38Iz+zjt+SK52XarjAgBesXpUrSc+m2blvyRpWzOU5eU/gBFGAgDASKuVhncwr7RTPP+ZDLT29B+r+f3vlwr11MYFAEiut6rlZ/5ELk43+duoBKqVaPwHYLRlnADw3aSPJoDAJNjWDNTuxRrE6T3vcXdJraf+rapv/2XJkEsFgFS4RO19f6C4fSHVYcPAaL4RiHUlMO7G/x5AegAAGHnWSNub6W/CuxeOqrv//019XACYVN39f6XOucOpjumc08JUROk/gLFAAgDAWKgUbeq3AkhS66WvanDsb1MfFwAmzeDlR9R66WupjztdC1UusPsHMB5IAAAYG/ONUIUw/Wltef/HlSweSn1cAJgUyfIhrTz3sdTHjQKj2Rrn/gGMDxIAAMaGMdLCVAbn8ZNYy0/+oVz3fPpjA8CYc91FrXzzj+XiQepjL0xHstT+Axgj2Xau8t4D0A1/AEyMYijNVAOdX033bqiku6q1J/+dqt/3y5ItpDo2AIytpKe1J/9vxZ3l1IeerQcqhWItCUwS5zz3AEw8fvj6UAEAYOzM1AKVMjiv2V08pvZT/05y2U/uADD6nNpP/6G6i8dSH7kYGU1XKf0HMH5IAAAYO+aVWwGMSf+tTfv0fnWf+/PUxwWAcdN97i/VPvVc6uNaK+2YDmWo/AcwhkgAABhLhdBoYSrKZOzWS4+pd+hTmYwNAOOgf+g+tY6m3/FfkrY1AkUBu38A4ynbHgBK5LkJgOfPB5BntZJRs2K0tJZ+Sf7KgQfVKNQV7fnh1McGgFEWv/RFrRx8UFL6m/CpaqB62Yr1IzCpxn//SAUAgLE23whVjNJfRBojrTz3McWnHk99bAAYVfHpJ7S8/2PKYvNfKhjN1Tn3D2C8kQAAMNaMkXZORwqymO2c0/LTf67kwvMZDA4AoyVZPKjlp/5MLkn/7Zu10o6piHP/AMYeCQAAYy8MpO1T2Zx4cslAy9/8A7m1lzMZHwBGgVs7rpUn/q1cMshk/O3NUCEv/wFMABIAACZCtWg1Vc1mykv6HS0/9jtynXOZjA8AeebaZ7Xy+O8q7ncyGX+6ZlUrsSQGMBkybgIo0QQQQFrm6oE6vUSdfvrzQtxZ1vLX/6Xq3/crspX51McHgDxynXNafuxfKW4vZzJ+uWA0WwvEehHAkO/9Y/ZzDelOABPDmOHdzjajM55xZ1mrj31Ern02mwAAIEeS9jmtPPoRxe3FTMYPrLQwFXLuH8BEyUEFgEcUAAB4g9Aa7ZwOdexcX1ms+gYXKwHe8atUAgCYWK5zTquPfkSDTjabf6Nhg9jQGtaKAF7jez5I/2bq70IFAICJUy5Y7ZiOMhs/7q5o5dEPy62dziwGAMiK65zTytez2/xLw6Z/pQyuiAWArJEAADCRaiWr6YyaAkrDJMDyox8hCQBgorj22cw3/zPVQPUyS2AAkynjIwCJaAIIICtz9UCD2Gmlk009Vtxd1vKjH1HjHb8iU9mWSQwAkBbXPquVDMv+JalWtJqtW7E+BHBp479/JP0JYKJtawSZloFeTAJQCQBgnOVh818MjRamxrv9FQBcDQkAABPNWqMdU6GCDI+Cxt1hY0DXeim7IADAk2T1mFYe/XCmm/+LDWDp+A9g0pEAADDxwsBo10ykLNeFcW9VS1/7V0oWD2QYBQBsreT8fi1//cMadJYyi2HY8T9UmGWmFwByIgd1UPQAAJC9YiQtTAV6+UJfJqNXRMmgreXHf1eNN/+87Pz3ZBIDAGyV5PQ3tPTUn8ol/cxicM5px3SkYiSxJgRwdb73j9nPQ1QAAMAraiWr+Ua2edEk7mnxyT9QfPLrmcYBANdicOQBLT7xR5lu/iVpWyNSrcRyFwAuYkYEgNeZrgaaqQbZBpHEWnryT9U/8DfZxgEAG+bUP/A3WnruE5LJ9k3XbC3QVIbXvQJAHuXgCAAA5MtsPVDipMW1OLsgjNPKC59TpbOo0t0/J5mMkxIAcDVuoM7Tf6i1k09ldpTqombZaqbGvAkAb0QCAAAuYb4RKE6cVjpJpnGsvfy4ku6iym/572TCSqaxAMBlxV2tffP31DmXfSPTeslqW5MlLgBcSsaHXZ3nHgtu+AMAm7C9EShJnFrdbOeRztmDSr7+f6j61l+UKc9lGgsAvJFrndLqN/8v9VdPZx2KqkWj7Y2A9R+AzXGe96c5uIyEg1EAcBnGDG8GKEVZRyL1Vk5q+au/JXf+uaxDAYBXubP7tPz1/z0Xm/9SZLRjOlTGpw8AINeojwKAK7DGaNdMpGPn+uoOso0l7rV1/tHf1dnmu3S6eHe2wQCYcE67ut/Q1NLjWQciSSqE0q6ZMA8v1wAg10gAAMBVWCPtnA517PxA/Qz7AkqSUaK5xS8pDo7pycH3KnEsdwGkK1Rfb48e11RyIutQJElRIO2aDmWZDgHgqjgCAADrEAZGu2cjRTloKm2M0ULyot4dfl4V0846HAATpG5W9O7w85rJ0eZ/92ykMGD3DwDrkXEFgO/u2k5+uzgAmCShlXbPBLmoBJCkanJB7w4e0tPuHToRL2QdDoAxtys4qbvN1xW4jM9DvaIQGu2cDhRa1noAtsr47x+pAACADQgDo90zoQo5OUAVuL7eokd0e/Ccxv0LC0BWnO6KntOb9UhuNv/Dsv9AEW/+AWBDSAAAwAblLQlgJN2ob+ld0SMq2V7W4QAYIyXT1Q8WHtHe5FtZh/KqKJB2z4SU/QPAJpAAAIBNCGy+kgCSNJWc0rvNA9pus7+OC8DoWwhO6YeCh9SIT2UdyquKodGeWTb/ALBZJAAAYJMCa7RnNlIpys9CNFJPbzNf0psLT8kajgQA2DgrpzdF+/RWfVmh62YdzoR3/VQAAB47SURBVKuKodGumUAB7f4BYNNy8O7K5wJ1/Js4AMiWNdKumUDHzw/U6ednvtkVH9BUeFZPxO/QSlLPOhwAI6Jhl/XW4DFVkgtZh/IdStFw8z/c++dnrgUwjnzvT7OVfQKA/T+AEWc1vIP65QsDtXv5mXSq8QX9oB7S4ehO7e/fpmG3AAC4tBvsId1u9snE+Wj0d1EpGs6xVmJdB8Av3/vHHMxh2ScAAGAMWDNcoJ5cGmi1k4PZ/RVGiW6Mn9FscFLfTN6pNVfOOiQAOVM2HX1v+Jim4lO5WJy+XrVotDB18c0/AOBa0QMAALaIMdJCM1Szkr+ptenO6t32Qd0QHs06FAA5cmN4WD9kHxhu/nNmqmK1czqUNez+AWCrZFwBkKQwRs5S2QDGmjHStoZVIZROLw1kcrRwDVxPd7iva0f4gp6Ov0+rrpp1SAAyUrFtvdk8runkZNahXNJMzWq2ZsU6DkC6xv8MOUcAAMCDqYpVYEKdWopz9zUylZzRD9gH9KK5U88Pbs9dfAB8crolPKSb3D5Zl6+z/hctTAWql/JXSQUA44AEAAB4Ui9bhYHRyxcGSnK2yw5crJvcPm0PX9ZTydu1lDSyDgmAZ9N2SW+yj6uWnM86lEuyRtoxFahSZPMPAL6QAAAAj8oFo90zwxsCBmmcetqgWnJO79KDOhler32DN2ugKOuQAGyxQAPdGX5Le9wBKcnhRCQpsNLumUgFVqYA4BXTLAB4VoyM9syGevlCrO4gZ6UAkoycdiSHtat0WoOdP67W1NuyDgnAFiktPaPC8YflestZh3JZhdBo10yokBf/AOBdDhIAvi9azN9iG8DkCQNp92ygk4sDtbr5nJeS3qrsix/X/Nx+le/4BzK1nVmHBGCTXOu4us/9ldbOfDvXK6HXrvnLc5QAJofv/WP2c10OEgAAMBmskXZOhzq/GuvsSpyrGwJer3N2v7pf/k1V9nyfirf8Z1KB/gDAqHD9VfUOfUrto19SEuezyd9F01WruXqQdRgAMFFIAABAymZqgYqR1cnF/DUHvMi5WK2jX1Pn5FOq3vBjCq9/j2T5ygByy8WKX/qiVg7cp6S3lnU0V2SNtL0ZqEanfwBIHas5AMhAtXixL8BA/TjraC4v7rW1/O1PKTr+dVVv+SnZhXdIymflAjCZnOITX9fagfvUb53NOpirKoRGO6cDRQHzCABkIdsEQCJaAACYWIXAaO9cpJOLsVY7+ezMfVF/5YwWn/hDFaceVOW298rM3p11SMDES84+o+7zH1N78XjWoazL8Lx/KGvE+gxAPvneP+Yg95lxBYDv2Z8MAIB8M5J2TFldaElnlvPbF+Ci7uIxdb72f6qy7VaVbvv7Mo0bsw4JmDhu6aA6z39Ma6cP5n7OGHKarVnN1AKxLgOQb+M/R3EEAAByYLpqVYyMTlyIc9sX4CJjjNpnDmjt9G+pPH+zSre+V3bqlqzDAsaeWzmizoFPqn3yGUkaic1/YKWFqVCVQv5jBYBJQAIAAHKiUjDaOx/qxIWBOv2so7k6Y4w6Zw+pfea3SQQAHrnlA+o8/ym1T+/POpQNKUVGC1OW8/4AkCMkAAAgR0Ir7Z4JdaGV6NxqrFwcFruKi4mAztnfVnn+VhVvfI/s7F1ZhwWMvOTcs+q+cL/aZ57XKMwFr3GarQWarlqNQJECAEyUHCQA6AIIAK9njDRTM6oUA51cjHN9S8Abtc88r/aZ5xU1dqhyw48p2PmDkuGqL2DdnFNy+hvqHLpfncWXXv83MgtpI8JAWmgGKhfo9AdgFPneP2bf9DkHCQAAwKWUIqPr5kKdXo610h6thXR/+YSWnvozRYfuV+X6v6twzw/KmULWYQH5lXQVH/uy1l78nPqr57KOZlMaZav5hh12+QcA5BIJAADIMWuGb9NqRadTS/lvEPhG/dVzWnrmLxU+/3GVdrxd0Y3vkSnPZx0WkB/d8+of/bzaR7+kQXct62g2xRppWzNQvcTOHwDyjgQAAIyAWsmoVBidBoFvNOh1tHrkyzJHv6LStjtVvOHHZGfoE4DJ5c4/p96Rh7R28lk5N2KZvdcZNvoLFAVZRwIAWA8SAAAwIi42CDzfSnR+RBoEvpFzidqnnlH71DMq1OdU3vX9srt/WKbQyDo0wDvXbyk+8VW1j3xR/ZVTWYdzjWj0BwCjKAcJAJoAAsB6GSPN1oxqxUCnlxN1+qM7x/VWzqi3/5MyBz6j0vwdKu39UZnZuzSKiQ3gSpKlQ+od/bw6J76hZDDIOpxrVgilhalAxZBGfwDGzfjvH7NPALD/B4ANK4ZGu6cDLbUTnV1JNMIVxHKDgdon9ql9Yp8K9XkVFt6uwnXvlkr0CsDocmtnNDj+JXVefnRkm/p9N6e5eqipihm+9R/heQcALsn3/jEH7ziyTwAAADbFGGmqYlUrWZ1airXWHf3VeG/ljHor90sHPqPy9G4Vdr5Twa53S1Et69CAqxusaXDiUXWPf03dc4eyjmZLlQpG2xuBCmEOVq8AgE0jAQAAIy600q7pQCsdpzPLseLsr5jdAkbtC8fVvvAx2f2fVGnbHYoW3q5g+9ukoJh1cMBr4o7cmSfUffkxdU7vVxKPfon/61krzdUDNcts/AFgHJAAAIAxUS8ZVYuhzizHWm6PfjXARUk80NqJfdKJfbLBn6o4d4sKC29TsOOdUlDKOjxMION6ik8/rd6Jx9U5tU/JoJd1SF5Ui0bzDasoYPMPAOMiBwkAmgAAwFaxRtretKqXnU4vJ+oPxmsOTOK+2qe+pfapb8k++5cqzt6iaNtbFC28Ta7QzDo8jDHTX1T/xDfUP/WUOmefl0vG603/60Wh0baGVaVwceM/XvMIAFye7/1j9mWaOUgAAAC2WqVgtHd2PJoEXk4yeC0ZYJ79CxUauxVt+x5FC2+TqV+XdXgYA2b1qPqnvqH+qafVWToml4zhg/Q6xkjTVavpqpHlbj8AGEskAABgTL3aJLBodG7VabmdfdbZF5c4dRdfUnfxJen5Tyso1VSauVGFubtltr1FKs5kHSJGQX9Fybln1TuzT/2z+9VfW8o6otRUi0bbmoFCm3UkAACfSAAAwJgLA6PtTaN6STqzkqg3vpXLr4o7q2q9/LRaLz8tY/9CxeYuRbO3K5y9U3bmdjlbyDpE5EHckbvwbfXPfkv9s/vVW3l57N/yv1ExMpqvW5ULvPEHgElAAgAAJkSlaLW3aLXacTqzEmsQZx1ROlzi1LlwTJ0Lx6SDn5OxVoX6DkXTNyqcvU129m6uGZwUcUfuwgENzn9b/QsH1V98UfFgAjJilxAG0kzVqlG2otofACZHxgmARDQBBIB01UpStRToQivRhVaiZHxPBlySS2J1l46pu3RMevFvZaxVVNumaPp6hc2bFMzcKlV2iV3RiHNOrnVM8fkDihcPqr90RP3V03KT9hv+DayVpitWU6+e82edBACvGf/9IxUAADCBjF55+1cyOt9yWlqb3E2RSxL1lk+qt3xS0tckSWGhqKh5nYLGXgXNvQqbN8qVt5MUyCvnZNonNVg8rHj5iOLlI+ovHdWg1806slyZqlrNVK0CzvkDwMQiAQAAEywMjLY1jGZqVmeXY610xjvrvV6DXleDMwekMwde/WtBWFBU36GgsVthfa/s1G6Z6m4prGYY6QTqrypZPSa3fEyDlaOKl4+pv3JC8aCXdWS51SgbzdZp8AcAGPcEwPhXcADAlgiNtNAMNFN1Ot9yWm7HMrzt/g7xoKf4whHpwhFJjwz/opPCUl1hbZvC2oKC+m7Z2g7Zyna50qxkgkxjHlkulumcU9I6qaR1QoPl44pXT2rQOqVBZ3VYwoIrcs6pUQ40W7OKLv42ZE0EAFc2AfNkDnoA+EQGAAA2ohBKC02j6Uqg861EKx1HIuBKjDTormjQXZHOHfqOv2WNUVCZVliZlS3PK6jMy5RnZcqzsuU5qTg9uQkCF0vdC0raZ2W65xS3zipeO6Nk7YwG7fOK1y4ocZf5/ua345U5p3p5WOpfCDnjDwAbM/5z5nhXAAAANqUYGe2YCjQ7cLqw5rS8lnD+fYMS55S0zqvfOi/pwHf9/cAamaimsDIlEzVkS1OyxZpssSFFdZliU6bYVFCcUhKUJZvzr+xkIBu3FXcX5bpLw5/eilxvWUl3RUlnSa63rEF7Ua6/qnjCrtvzzjnVy0aztfC1N/4AALxBzlcTAIAsFUKj7Q2jmarV+dVYy21HImCLxImTLlYPXIU1krGRTFiUCUsKCmWZsCQTlmWCopyxw19bKxNWZGRlotd6E1hr5IKinC69MzSKZeKuklc35U6uvybnErl4TYpjJXFHJknkku7w7w26ivttuUFHbtCVS/piT58+I6dG2Wqmxhl/AMDVkQAAAFxVFEjbm4Hm6tLiWqKltlM8uRcHpC5xkuL+8Ke7qn4r64iQNWuGzf2mK1ZhQFIOALA+JAAAAOsWWGm2ZjVTlVY6ThdaiXpx1lEBkyMKpKmKUbNiaYcAANiwHCQAfNcLUo8IAFvNGKlRluolq1bXaXEtUbufdVTA+CpH0lTFqla6uO1nfQMAfoz3/JqDBAAAYFQZI9VKRrVSoN7AaanttLSWyPFuErhmRsOO/lNlo2LEMwUAuHYkAAAAW6IQGs3XjWZrVktriZbWEvUTNi3ARkXWaaoaqFE2sjxCAIAtRAIAALClrJGmq1bTVavuQFpsJVrpUBUAXImRU7Vo1awYVQo8KwAAP0gAAAC8KYbS9qbVfMNqpTM8HtAdZB0VkB+lyKhekhrlgLf9AADvMk4AOMl5bLLg5PfzAQDrYiU1S1KzZNUbOK10hj99bhDABArtsHdGs2xVeHUl5sa97xQAjADP+9McHI2kAgAAkKpCaDRbM5qtSWs9p+V2olb3lbvugTFljVQrGtXLlPgDALJDAgAAkJlKwahSCOTcMBmw2nVa7TiSARgLRlKlaF7d+LPtBwBkjQQAACBzxkjVolG1aDRfd1rrSqtdp1aXZABGi33l93Ltld/Phl0/ACBHcpAA8L2yY+UIAKPEGqlWGp6Rds6o03+tMmCQZB0d8N1CO6xmqZWG5f2vbfpZgwDAaHHyO3dn/72QgwQAAACXZoxULhiVC0bzdak7kFY7iVpdp07fyfB6FRlwzqlcsK9WrRRZTQEARgRfWQCAkVEMpWLNarYmxYnU7ju1OsOjAnH2SXWMMWsu9qyQqkWrMCD5BAAYPSQAAAAjKbDDruq14nAj1h1IrU6izkBa67ocFNlhlNmL1SeRVCla3vIDAMYCX2cAgLFwsTpAGl7h2x04rXWd2n2p3SMhgCszev2G36gY0sAPADB+Mk4AJPLbCMF4/nwAQB4ZI5UiqRQNd3DOGfUGw74BnYFRu5eoH2ccJDIVGKlUMCqFw41/KXrjhp/1AwBMHt9NALPPLFMBAAAYe8ZIxcioGBk1JUmBBrFTu+/U7Uud/rBigCsHx5M1w2RQMRz+sRSJM/wAgImUbQIgjVsWWMwBAC4htEb1olG9+Npf68fDREC759QbDH8dc/XgSAmsVAyNCq+82S+GRlFwiX+Q9QEA4I3GvwCACgAAAC6KAikKXmssKA1vG+jFUrfv1B0MEwM9qgUyZ41UeGWjXwyH1R2FYJgAAAAAl0YCAACAKwisVLZSOTJ6feo+ToaJgN7AqRcPqwd6A6dBzMvlrWIkhcErG/1gmKAZbvoNG30AADZhzBMALMEAAH4EVioXhmXmrxn+ehA7DZJhUqAfO/XjYcKgHzvFieFYwSuscQpfqboIrV79dRTolT+/XK0k3+8AAB98f79kvwAY8wQAAADpCwOjMBjeRHCpA3/OSbGT+gOn2BkN4mGvgTi5+Ecpdq/9OheHBtfFKbDD5EhgzGu/tsNfh4FRYJyi0Cgw4po9AABSRgIAAICUGSOFRgpfrR544x+/k3NS8rqfOHFKkuF7ilf/6JwkoyRxkjGK39CkILnKSwf7hpL6wBrJOVk7vFJ3+OfDf8688s8H1sgavfqzvg09u34AALJCAgAAgJwzZnhv/WvN7C+1iV5fMmGDI2/hZwEAgKzRQgcAAAAAgAmQcQVA9k0QAAAAAAAYHqob70azVAAAAAAAADABSAAAAAAAADABSAAAAAAAADABsu0BkGh4t5Ev43+EAwAAAACwFZzzuz/NweaUCgAAAAAAACYACQAAAAAAACYACQAAAAAAACYACQAAAAAAACZAtk0A6dIHAAAAAMiF8d+fUgEAAAAAAMAEIAEAAAAA4P9v7+5iLb3KOoA/691nPjpNWwQ/ao3BglMZpCo6inSYBiISYsKFibQhMXABdKpWlGiMGElOsIkmEj+SGrDUBKNAwEhMqlYr4tgZito0tWrsMG1TMnZmaimdj3PmzJyz917Li+noQDs9e3DWXvvs9/e7m5v3ebLP3Kz/+6znBXpAAAAAAAA9IAAAAACAHmi8BDC3LQ8AAAARUX8JYKr47Mk0DgCi7u87/0scAQAAuBRqnx9n4P23KwAAAADQAwIAAAAA6IH2VwCqMv8PAADALGh/B8AEAAAAAPSAAAAAAAB6QAAAAAAAPSAAAAAAgB5ovATQkj4AAABmxXyfUU0AAAAAQA8IAAAAAKAHBAAAAADQA213AOQp1JjvKxwAAABcCj04OzZeAhjRi18ZAACADaDm+bT92dcVAAAAAOgBAQAAAAD0gAAAAAAAekAAAAAAAD3QeAngND4DAAAAAJNov6ivJhMAAAAA0AMCAAAAAOgBAQAAAAD0QOMdABHzfscCAACAjaLm+bT92bd9AFD7923/GwMAADDrap8fZ2AHvisAAAAA0AMCAAAAAOgBAQAAAAD0QPsdANVZAgAAAAAmAAAAAKAHBAAAAADQAwIAAAAA6AEBAAAAAPTADCwBtKQPAACAeZdbN2ACAAAAAPpAAAAAAAA90PYKQIm6NwBqPx8AAID5UPv8mCo+e0KNdwDkcEIHAACA+lwBAAAAgB4QAAAAAEAPCAA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-
-  appIcon = new Tray(icon)
-
-  const contextMenu = Menu.buildFromTemplate([{
-    label: 'Remove',
-    click: () => {
-      event.sender.send('tray-removed')
-    }
-  }])
-
-  appIcon.setToolTip('Electron Demo in the tray.')
-  appIcon.setContextMenu(contextMenu)
-})
-
-ipcMain.on('remove-tray', () => {
-  appIcon.destroy()
-})
-
-// In this file you can include the rest of your app's specific main process
-// code. You can also put them in separate files and require them here.
+// Modules to control application life and create native browser window
+const { ipcMain, app, nativeImage, Menu, Tray, BrowserWindow } = require('electron')
+
+// Keep a global reference of the window object, if you don't, the window will
+// be closed automatically when the JavaScript object is garbage collected.
+let mainWindow
+let appIcon = null
+
+function createWindow () {
+  // Create the browser window.
+  mainWindow = new BrowserWindow({
+    width: 800,
+    height: 600,
+    webPreferences: {
+      nodeIntegration: true
+    }
+  })
+
+  // and load the index.html of the app.
+  mainWindow.loadFile('index.html')
+
+  // Open the DevTools.
+  // mainWindow.webContents.openDevTools()
+
+  // Emitted when the window is closed.
+  mainWindow.on('closed', function () {
+    // Dereference the window object, usually you would store windows
+    // in an array if your app supports multi windows, this is the time
+    // when you should delete the corresponding element.
+    mainWindow = null
+  })
+}
+
+// This method will be called when Electron has finished
+// initialization and is ready to create browser windows.
+// Some APIs can only be used after this event occurs.
+app.whenReady().then(createWindow)
+
+// Quit when all windows are closed.
+app.on('window-all-closed', function () {
+  // On macOS it is common for applications and their menu bar
+  // to stay active until the user quits explicitly with Cmd + Q
+  if (process.platform !== 'darwin') {
+    app.quit()
+  }
+})
+
+app.on('activate', function () {
+  // On macOS it is common to re-create a window in the app when the
+  // dock icon is clicked and there are no other windows open.
+  if (mainWindow === null) {
+    createWindow()
+  }
+})
+
+ipcMain.on('put-in-tray', (event) => {
+  const icon = 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')
+
+  appIcon = new Tray(icon)
+
+  const contextMenu = Menu.buildFromTemplate([{
+    label: 'Remove',
+    click: () => {
+      event.sender.send('tray-removed')
+    }
+  }])
+
+  appIcon.setToolTip('Electron Demo in the tray.')
+  appIcon.setContextMenu(contextMenu)
+})
+
+ipcMain.on('remove-tray', () => {
+  appIcon.destroy()
+})
+
+// In this file you can include the rest of your app's specific main process
+// code. You can also put them in separate files and require them here.
diff --git a/docs/fiddles/native-ui/tray/renderer.js b/docs/fiddles/native-ui/tray/renderer.js
index 8fe79ffd94daf..40eee8c859bdf 100644
--- a/docs/fiddles/native-ui/tray/renderer.js
+++ b/docs/fiddles/native-ui/tray/renderer.js
@@ -1,35 +1,35 @@
-const { ipcRenderer, shell } = require('electron')
-
-const trayBtn = document.getElementById('put-in-tray')
-const links = document.querySelectorAll('a[href]')
-
-let trayOn = false
-
-trayBtn.addEventListener('click', function (event) {
-  if (trayOn) {
-    trayOn = false
-    document.getElementById('tray-countdown').innerHTML = ''
-    ipcRenderer.send('remove-tray')
-  } else {
-    trayOn = true
-    const message = 'Click demo again to remove.'
-    document.getElementById('tray-countdown').innerHTML = message
-    ipcRenderer.send('put-in-tray')
-  }
-})
-// Tray removed from context menu on icon
-ipcRenderer.on('tray-removed', function () {
-  ipcRenderer.send('remove-tray')
-  trayOn = false
-  document.getElementById('tray-countdown').innerHTML = ''
-})
-
-Array.prototype.forEach.call(links, (link) => {
-  const url = link.getAttribute('href')
-  if (url.indexOf('http') === 0) {
-    link.addEventListener('click', (e) => {
-      e.preventDefault()
-      shell.openExternal(url)
-    })
-  }
+const { ipcRenderer, shell } = require('electron')
+
+const trayBtn = document.getElementById('put-in-tray')
+const links = document.querySelectorAll('a[href]')
+
+let trayOn = false
+
+trayBtn.addEventListener('click', function (event) {
+  if (trayOn) {
+    trayOn = false
+    document.getElementById('tray-countdown').innerHTML = ''
+    ipcRenderer.send('remove-tray')
+  } else {
+    trayOn = true
+    const message = 'Click demo again to remove.'
+    document.getElementById('tray-countdown').innerHTML = message
+    ipcRenderer.send('put-in-tray')
+  }
+})
+// Tray removed from context menu on icon
+ipcRenderer.on('tray-removed', function () {
+  ipcRenderer.send('remove-tray')
+  trayOn = false
+  document.getElementById('tray-countdown').innerHTML = ''
+})
+
+Array.prototype.forEach.call(links, (link) => {
+  const url = link.getAttribute('href')
+  if (url.indexOf('http') === 0) {
+    link.addEventListener('click', (e) => {
+      e.preventDefault()
+      shell.openExternal(url)
+    })
+  }
 })
\ No newline at end of file
diff --git a/docs/fiddles/windows/manage-windows/frameless-window/main.js b/docs/fiddles/windows/manage-windows/frameless-window/main.js
index 66313f6abc236..6291dcad9c993 100644
--- a/docs/fiddles/windows/manage-windows/frameless-window/main.js
+++ b/docs/fiddles/windows/manage-windows/frameless-window/main.js
@@ -1,56 +1,56 @@
-// Modules to control application life and create native browser window
-const { app, BrowserWindow } = require('electron')
-
-// Keep a global reference of the window object, if you don't, the window will
-// be closed automatically when the JavaScript object is garbage collected.
-let mainWindow
-
-function createWindow () {
-  // Create the browser window.
-  mainWindow = new BrowserWindow({
-    width: 800,
-    height: 600,
-    webPreferences: {
-      nodeIntegration: true
-    }
-  })
-
-  // and load the index.html of the app.
-  mainWindow.loadFile('index.html')
-
-  // Open the DevTools.
-  // mainWindow.webContents.openDevTools()
-
-  // Emitted when the window is closed.
-  mainWindow.on('closed', function () {
-    // Dereference the window object, usually you would store windows
-    // in an array if your app supports multi windows, this is the time
-    // when you should delete the corresponding element.
-    mainWindow = null
-  })
-}
-
-// This method will be called when Electron has finished
-// initialization and is ready to create browser windows.
-// Some APIs can only be used after this event occurs.
-app.whenReady().then(createWindow)
-
-// Quit when all windows are closed.
-app.on('window-all-closed', function () {
-  // On macOS it is common for applications and their menu bar
-  // to stay active until the user quits explicitly with Cmd + Q
-  if (process.platform !== 'darwin') {
-    app.quit()
-  }
-})
-
-app.on('activate', function () {
-  // On macOS it is common to re-create a window in the app when the
-  // dock icon is clicked and there are no other windows open.
-  if (mainWindow === null) {
-    createWindow()
-  }
-})
-
-// In this file you can include the rest of your app's specific main process
+// Modules to control application life and create native browser window
+const { app, BrowserWindow } = require('electron')
+
+// Keep a global reference of the window object, if you don't, the window will
+// be closed automatically when the JavaScript object is garbage collected.
+let mainWindow
+
+function createWindow () {
+  // Create the browser window.
+  mainWindow = new BrowserWindow({
+    width: 800,
+    height: 600,
+    webPreferences: {
+      nodeIntegration: true
+    }
+  })
+
+  // and load the index.html of the app.
+  mainWindow.loadFile('index.html')
+
+  // Open the DevTools.
+  // mainWindow.webContents.openDevTools()
+
+  // Emitted when the window is closed.
+  mainWindow.on('closed', function () {
+    // Dereference the window object, usually you would store windows
+    // in an array if your app supports multi windows, this is the time
+    // when you should delete the corresponding element.
+    mainWindow = null
+  })
+}
+
+// This method will be called when Electron has finished
+// initialization and is ready to create browser windows.
+// Some APIs can only be used after this event occurs.
+app.whenReady().then(createWindow)
+
+// Quit when all windows are closed.
+app.on('window-all-closed', function () {
+  // On macOS it is common for applications and their menu bar
+  // to stay active until the user quits explicitly with Cmd + Q
+  if (process.platform !== 'darwin') {
+    app.quit()
+  }
+})
+
+app.on('activate', function () {
+  // On macOS it is common to re-create a window in the app when the
+  // dock icon is clicked and there are no other windows open.
+  if (mainWindow === null) {
+    createWindow()
+  }
+})
+
+// In this file you can include the rest of your app's specific main process
 // code. You can also put them in separate files and require them here.
diff --git a/docs/fiddles/windows/manage-windows/frameless-window/renderer.js b/docs/fiddles/windows/manage-windows/frameless-window/renderer.js
index 42dcf80227c11..89550c0e08d2f 100644
--- a/docs/fiddles/windows/manage-windows/frameless-window/renderer.js
+++ b/docs/fiddles/windows/manage-windows/frameless-window/renderer.js
@@ -1,25 +1,25 @@
-const { BrowserWindow } = require('electron').remote
-const shell = require('electron').shell
-
-const framelessWindowBtn = document.getElementById('frameless-window')
-
-const links = document.querySelectorAll('a[href]')
-
-framelessWindowBtn.addEventListener('click', (event) => {
-  const modalPath = 'https://electronjs.org'
-  let win = new BrowserWindow({ frame: false })
-
-  win.on('close', () => { win = null })
-  win.loadURL(modalPath)
-  win.show()
-})
-
-Array.prototype.forEach.call(links, (link) => {
-  const url = link.getAttribute('href')
-  if (url.indexOf('http') === 0) {
-    link.addEventListener('click', (e) => {
-      e.preventDefault()
-      shell.openExternal(url)
-    })
-  }
-})
+const { BrowserWindow } = require('electron').remote
+const shell = require('electron').shell
+
+const framelessWindowBtn = document.getElementById('frameless-window')
+
+const links = document.querySelectorAll('a[href]')
+
+framelessWindowBtn.addEventListener('click', (event) => {
+  const modalPath = 'https://electronjs.org'
+  let win = new BrowserWindow({ frame: false })
+
+  win.on('close', () => { win = null })
+  win.loadURL(modalPath)
+  win.show()
+})
+
+Array.prototype.forEach.call(links, (link) => {
+  const url = link.getAttribute('href')
+  if (url.indexOf('http') === 0) {
+    link.addEventListener('click', (e) => {
+      e.preventDefault()
+      shell.openExternal(url)
+    })
+  }
+})
diff --git a/docs/fiddles/windows/manage-windows/manage-window-state/main.js b/docs/fiddles/windows/manage-windows/manage-window-state/main.js
index 66313f6abc236..6291dcad9c993 100644
--- a/docs/fiddles/windows/manage-windows/manage-window-state/main.js
+++ b/docs/fiddles/windows/manage-windows/manage-window-state/main.js
@@ -1,56 +1,56 @@
-// Modules to control application life and create native browser window
-const { app, BrowserWindow } = require('electron')
-
-// Keep a global reference of the window object, if you don't, the window will
-// be closed automatically when the JavaScript object is garbage collected.
-let mainWindow
-
-function createWindow () {
-  // Create the browser window.
-  mainWindow = new BrowserWindow({
-    width: 800,
-    height: 600,
-    webPreferences: {
-      nodeIntegration: true
-    }
-  })
-
-  // and load the index.html of the app.
-  mainWindow.loadFile('index.html')
-
-  // Open the DevTools.
-  // mainWindow.webContents.openDevTools()
-
-  // Emitted when the window is closed.
-  mainWindow.on('closed', function () {
-    // Dereference the window object, usually you would store windows
-    // in an array if your app supports multi windows, this is the time
-    // when you should delete the corresponding element.
-    mainWindow = null
-  })
-}
-
-// This method will be called when Electron has finished
-// initialization and is ready to create browser windows.
-// Some APIs can only be used after this event occurs.
-app.whenReady().then(createWindow)
-
-// Quit when all windows are closed.
-app.on('window-all-closed', function () {
-  // On macOS it is common for applications and their menu bar
-  // to stay active until the user quits explicitly with Cmd + Q
-  if (process.platform !== 'darwin') {
-    app.quit()
-  }
-})
-
-app.on('activate', function () {
-  // On macOS it is common to re-create a window in the app when the
-  // dock icon is clicked and there are no other windows open.
-  if (mainWindow === null) {
-    createWindow()
-  }
-})
-
-// In this file you can include the rest of your app's specific main process
+// Modules to control application life and create native browser window
+const { app, BrowserWindow } = require('electron')
+
+// Keep a global reference of the window object, if you don't, the window will
+// be closed automatically when the JavaScript object is garbage collected.
+let mainWindow
+
+function createWindow () {
+  // Create the browser window.
+  mainWindow = new BrowserWindow({
+    width: 800,
+    height: 600,
+    webPreferences: {
+      nodeIntegration: true
+    }
+  })
+
+  // and load the index.html of the app.
+  mainWindow.loadFile('index.html')
+
+  // Open the DevTools.
+  // mainWindow.webContents.openDevTools()
+
+  // Emitted when the window is closed.
+  mainWindow.on('closed', function () {
+    // Dereference the window object, usually you would store windows
+    // in an array if your app supports multi windows, this is the time
+    // when you should delete the corresponding element.
+    mainWindow = null
+  })
+}
+
+// This method will be called when Electron has finished
+// initialization and is ready to create browser windows.
+// Some APIs can only be used after this event occurs.
+app.whenReady().then(createWindow)
+
+// Quit when all windows are closed.
+app.on('window-all-closed', function () {
+  // On macOS it is common for applications and their menu bar
+  // to stay active until the user quits explicitly with Cmd + Q
+  if (process.platform !== 'darwin') {
+    app.quit()
+  }
+})
+
+app.on('activate', function () {
+  // On macOS it is common to re-create a window in the app when the
+  // dock icon is clicked and there are no other windows open.
+  if (mainWindow === null) {
+    createWindow()
+  }
+})
+
+// In this file you can include the rest of your app's specific main process
 // code. You can also put them in separate files and require them here.
diff --git a/docs/fiddles/windows/manage-windows/manage-window-state/renderer.js b/docs/fiddles/windows/manage-windows/manage-window-state/renderer.js
index 8d054f8358bc4..5f69fc0282e99 100644
--- a/docs/fiddles/windows/manage-windows/manage-window-state/renderer.js
+++ b/docs/fiddles/windows/manage-windows/manage-window-state/renderer.js
@@ -1,35 +1,35 @@
-const { BrowserWindow } = require('electron').remote
-const shell = require('electron').shell
-
-const manageWindowBtn = document.getElementById('manage-window')
-
-const links = document.querySelectorAll('a[href]')
-
-let win
-
-manageWindowBtn.addEventListener('click', (event) => {
-  const modalPath = 'https://electronjs.org'
-  win = new BrowserWindow({ width: 400, height: 275 })
-
-  win.on('resize', updateReply)
-  win.on('move', updateReply)
-  win.on('close', () => { win = null })
-  win.loadURL(modalPath)
-  win.show()
-
-  function updateReply () {
-    const manageWindowReply = document.getElementById('manage-window-reply')
-    const message = `Size: ${win.getSize()} Position: ${win.getPosition()}`
-    manageWindowReply.innerText = message
-  }
-})
-
-Array.prototype.forEach.call(links, (link) => {
-  const url = link.getAttribute('href')
-  if (url.indexOf('http') === 0) {
-    link.addEventListener('click', (e) => {
-      e.preventDefault()
-      shell.openExternal(url)
-    })
-  }
-})
+const { BrowserWindow } = require('electron').remote
+const shell = require('electron').shell
+
+const manageWindowBtn = document.getElementById('manage-window')
+
+const links = document.querySelectorAll('a[href]')
+
+let win
+
+manageWindowBtn.addEventListener('click', (event) => {
+  const modalPath = 'https://electronjs.org'
+  win = new BrowserWindow({ width: 400, height: 275 })
+
+  win.on('resize', updateReply)
+  win.on('move', updateReply)
+  win.on('close', () => { win = null })
+  win.loadURL(modalPath)
+  win.show()
+
+  function updateReply () {
+    const manageWindowReply = document.getElementById('manage-window-reply')
+    const message = `Size: ${win.getSize()} Position: ${win.getPosition()}`
+    manageWindowReply.innerText = message
+  }
+})
+
+Array.prototype.forEach.call(links, (link) => {
+  const url = link.getAttribute('href')
+  if (url.indexOf('http') === 0) {
+    link.addEventListener('click', (e) => {
+      e.preventDefault()
+      shell.openExternal(url)
+    })
+  }
+})
diff --git a/docs/fiddles/windows/manage-windows/window-events/main.js b/docs/fiddles/windows/manage-windows/window-events/main.js
index 66313f6abc236..6291dcad9c993 100644
--- a/docs/fiddles/windows/manage-windows/window-events/main.js
+++ b/docs/fiddles/windows/manage-windows/window-events/main.js
@@ -1,56 +1,56 @@
-// Modules to control application life and create native browser window
-const { app, BrowserWindow } = require('electron')
-
-// Keep a global reference of the window object, if you don't, the window will
-// be closed automatically when the JavaScript object is garbage collected.
-let mainWindow
-
-function createWindow () {
-  // Create the browser window.
-  mainWindow = new BrowserWindow({
-    width: 800,
-    height: 600,
-    webPreferences: {
-      nodeIntegration: true
-    }
-  })
-
-  // and load the index.html of the app.
-  mainWindow.loadFile('index.html')
-
-  // Open the DevTools.
-  // mainWindow.webContents.openDevTools()
-
-  // Emitted when the window is closed.
-  mainWindow.on('closed', function () {
-    // Dereference the window object, usually you would store windows
-    // in an array if your app supports multi windows, this is the time
-    // when you should delete the corresponding element.
-    mainWindow = null
-  })
-}
-
-// This method will be called when Electron has finished
-// initialization and is ready to create browser windows.
-// Some APIs can only be used after this event occurs.
-app.whenReady().then(createWindow)
-
-// Quit when all windows are closed.
-app.on('window-all-closed', function () {
-  // On macOS it is common for applications and their menu bar
-  // to stay active until the user quits explicitly with Cmd + Q
-  if (process.platform !== 'darwin') {
-    app.quit()
-  }
-})
-
-app.on('activate', function () {
-  // On macOS it is common to re-create a window in the app when the
-  // dock icon is clicked and there are no other windows open.
-  if (mainWindow === null) {
-    createWindow()
-  }
-})
-
-// In this file you can include the rest of your app's specific main process
+// Modules to control application life and create native browser window
+const { app, BrowserWindow } = require('electron')
+
+// Keep a global reference of the window object, if you don't, the window will
+// be closed automatically when the JavaScript object is garbage collected.
+let mainWindow
+
+function createWindow () {
+  // Create the browser window.
+  mainWindow = new BrowserWindow({
+    width: 800,
+    height: 600,
+    webPreferences: {
+      nodeIntegration: true
+    }
+  })
+
+  // and load the index.html of the app.
+  mainWindow.loadFile('index.html')
+
+  // Open the DevTools.
+  // mainWindow.webContents.openDevTools()
+
+  // Emitted when the window is closed.
+  mainWindow.on('closed', function () {
+    // Dereference the window object, usually you would store windows
+    // in an array if your app supports multi windows, this is the time
+    // when you should delete the corresponding element.
+    mainWindow = null
+  })
+}
+
+// This method will be called when Electron has finished
+// initialization and is ready to create browser windows.
+// Some APIs can only be used after this event occurs.
+app.whenReady().then(createWindow)
+
+// Quit when all windows are closed.
+app.on('window-all-closed', function () {
+  // On macOS it is common for applications and their menu bar
+  // to stay active until the user quits explicitly with Cmd + Q
+  if (process.platform !== 'darwin') {
+    app.quit()
+  }
+})
+
+app.on('activate', function () {
+  // On macOS it is common to re-create a window in the app when the
+  // dock icon is clicked and there are no other windows open.
+  if (mainWindow === null) {
+    createWindow()
+  }
+})
+
+// In this file you can include the rest of your app's specific main process
 // code. You can also put them in separate files and require them here.
diff --git a/docs/fiddles/windows/manage-windows/window-events/renderer.js b/docs/fiddles/windows/manage-windows/window-events/renderer.js
index 63326c33f41e0..1fac7212672dc 100644
--- a/docs/fiddles/windows/manage-windows/window-events/renderer.js
+++ b/docs/fiddles/windows/manage-windows/window-events/renderer.js
@@ -1,48 +1,48 @@
-const { BrowserWindow } = require('electron').remote
-const shell = require('electron').shell
-
-const listenToWindowBtn = document.getElementById('listen-to-window')
-const focusModalBtn = document.getElementById('focus-on-modal-window')
-
-const links = document.querySelectorAll('a[href]')
-
-let win
-
-listenToWindowBtn.addEventListener('click', () => {
-  const modalPath = 'https://electronjs.org'
-  win = new BrowserWindow({ width: 600, height: 400 })
-
-  const hideFocusBtn = () => {
-    focusModalBtn.classList.add('disappear')
-    focusModalBtn.classList.remove('smooth-appear')
-    focusModalBtn.removeEventListener('click', clickHandler)
-  }
-
-  const showFocusBtn = (btn) => {
-    if (!win) return
-    focusModalBtn.classList.add('smooth-appear')
-    focusModalBtn.classList.remove('disappear')
-    focusModalBtn.addEventListener('click', clickHandler)
-  }
-
-  win.on('focus', hideFocusBtn)
-  win.on('blur', showFocusBtn)
-  win.on('close', () => {
-    hideFocusBtn()
-    win = null
-  })
-  win.loadURL(modalPath)
-  win.show()
-
-  const clickHandler = () => { win.focus() }
-})
-
-Array.prototype.forEach.call(links, (link) => {
-  const url = link.getAttribute('href')
-  if (url.indexOf('http') === 0) {
-    link.addEventListener('click', (e) => {
-      e.preventDefault()
-      shell.openExternal(url)
-    })
-  }
-})
+const { BrowserWindow } = require('electron').remote
+const shell = require('electron').shell
+
+const listenToWindowBtn = document.getElementById('listen-to-window')
+const focusModalBtn = document.getElementById('focus-on-modal-window')
+
+const links = document.querySelectorAll('a[href]')
+
+let win
+
+listenToWindowBtn.addEventListener('click', () => {
+  const modalPath = 'https://electronjs.org'
+  win = new BrowserWindow({ width: 600, height: 400 })
+
+  const hideFocusBtn = () => {
+    focusModalBtn.classList.add('disappear')
+    focusModalBtn.classList.remove('smooth-appear')
+    focusModalBtn.removeEventListener('click', clickHandler)
+  }
+
+  const showFocusBtn = (btn) => {
+    if (!win) return
+    focusModalBtn.classList.add('smooth-appear')
+    focusModalBtn.classList.remove('disappear')
+    focusModalBtn.addEventListener('click', clickHandler)
+  }
+
+  win.on('focus', hideFocusBtn)
+  win.on('blur', showFocusBtn)
+  win.on('close', () => {
+    hideFocusBtn()
+    win = null
+  })
+  win.loadURL(modalPath)
+  win.show()
+
+  const clickHandler = () => { win.focus() }
+})
+
+Array.prototype.forEach.call(links, (link) => {
+  const url = link.getAttribute('href')
+  if (url.indexOf('http') === 0) {
+    link.addEventListener('click', (e) => {
+      e.preventDefault()
+      shell.openExternal(url)
+    })
+  }
+})
diff --git a/docs/tutorial/devtools-extension.md b/docs/tutorial/devtools-extension.md
index 135f8e0f82dcd..377fc5c50f79e 100644
--- a/docs/tutorial/devtools-extension.md
+++ b/docs/tutorial/devtools-extension.md
@@ -1,25 +1,28 @@
 # DevTools Extension
 
-Electron supports the [Chrome DevTools Extension][devtools-extension], which can
-be used to extend the ability of devtools for debugging popular web frameworks.
+Electron supports [Chrome DevTools extensions][devtools-extension], which can
+be used to extend the ability of Chrome's developer tools for debugging
+popular web frameworks.
 
-## How to load a DevTools Extension
+## Loading a DevTools extension with tooling
 
-This document outlines the process for manually loading an extension.
-You may also try
-[electron-devtools-installer](https://github.com/GPMDP/electron-devtools-installer),
-a third-party tool that downloads extensions directly from the Chrome WebStore.
+The easiest way to load a DevTools extension is to use third-party tooling to automate the
+process for you. [electron-devtools-installer][electron-devtools-installer] is a popular
+NPM package that does just that.
 
-To load an extension in Electron, you need to download it in Chrome browser,
-locate its filesystem path, and then load it by calling the
-`BrowserWindow.addDevToolsExtension(extension)` API.
+## Manually loading a DevTools extension
 
-Using the [React Developer Tools][react-devtools] as example:
+If you don't want to use the tooling approach, you can also do all of the necessary
+operations by hand. To load an extension in Electron, you need to download it via Chrome,
+locate its filesystem path, and then load it into your [Session][session] by calling the
+[`ses.loadExtension`] API.
 
-1. Install it in Chrome browser.
+Using the [React Developer Tools][react-devtools] as an example:
+
+1. Install the extension in Google Chrome.
 1. Navigate to `chrome://extensions`, and find its extension ID, which is a hash
    string like `fmkadmapgofadopljbjfkapdkoienihi`.
-1. Find out filesystem location used by Chrome for storing extensions:
+1. Find out the filesystem location used by Chrome for storing extensions:
    * on Windows it is `%LOCALAPPDATA%\Google\Chrome\User Data\Default\Extensions`;
    * on Linux it could be:
      * `~/.config/google-chrome/Default/Extensions/`
@@ -27,36 +30,48 @@ Using the [React Developer Tools][react-devtools] as example:
      * `~/.config/google-chrome-canary/Default/Extensions/`
      * `~/.config/chromium/Default/Extensions/`
    * on macOS it is `~/Library/Application Support/Google/Chrome/Default/Extensions`.
-1. Pass the location of the extension to `BrowserWindow.addDevToolsExtension`
-   API, for the React Developer Tools, it is something like:
+1. Pass the location of the extension to the [`ses.loadExtension`][load-extension]
+   API. For React Developer Tools `v4.9.0`, it looks something like:
    ```javascript
-   const path = require('path')
-   const os = require('os')
-
-   BrowserWindow.addDevToolsExtension(
-      path.join(os.homedir(), '/Library/Application Support/Google/Chrome/Default/Extensions/fmkadmapgofadopljbjfkapdkoienihi/4.3.0_0')
-   )
+    const { app, session } = require('electron')
+    const path = require('path')
+    const os = require('os')
+
+    // on macOS
+    const reactDevToolsPath = path.join(
+      os.homedir(),
+      '/Library/Application Support/Google/Chrome/Default/Extensions/fmkadmapgofadopljbjfkapdkoienihi/4.9.0_0'
+    )
+
+    app.whenReady().then(async () => {
+      await session.defaultSession.loadExtension(reactDevToolsPath)
+    })
    ```
 
-**Note:** The `BrowserWindow.addDevToolsExtension` API cannot be called before the
-ready event of the app module is emitted.
+**Notes:**
+
+* `loadExtension` returns a Promise with an [Extension object][extension-structure],
+which contains metadata about the extension that was loaded. This promise needs to
+resolve (e.g. with an `await` expression) before loading a page. Otherwise, the
+extension won't be guaranteed to load.
+* `loadExtension` cannot be called before the `ready` event of the `app` module
+is emitted, nor can it be called on in-memory (non-persistent) sessions.
+* `loadExtension` must be called on every boot of your app if you want the
+extension to be loaded.
 
-The extension will be remembered so you only need to call this API once per
-extension. If you try to add an extension that has already been loaded, this method
-will not return and instead log a warning to the console.
+### Removing a DevTools extension
 
-### How to remove a DevTools Extension
+You can pass the extension's ID to the [`ses.removeExtension`][remove-extension] API to
+remove it from your Session. Loaded extensions are not persisted between
+app launches.
 
-You can pass the name of the extension to the `BrowserWindow.removeDevToolsExtension`
-API to remove it. The name of the extension is returned by
-`BrowserWindow.addDevToolsExtension` and you can get the names of all installed
-DevTools Extensions using the `BrowserWindow.getDevToolsExtensions` API.
+## DevTools extension support
 
-## Supported DevTools Extensions
+Electron only supports
+[a limited set of `chrome.*` APIs][supported-extension-apis],
+so extensions using unsupported `chrome.*` APIs under the hood may not work.
 
-Electron only supports a limited set of `chrome.*` APIs, so some extensions
-using unsupported `chrome.*` APIs for chrome extension features may not work.
-Following Devtools Extensions are tested and guaranteed to work in Electron:
+The following Devtools extensions have been tested to work in Electron:
 
 * [Ember Inspector](https://chrome.google.com/webstore/detail/ember-inspector/bmdblncegkenkacieihfhpjfppoconhi)
 * [React Developer Tools](https://chrome.google.com/webstore/detail/react-developer-tools/fmkadmapgofadopljbjfkapdkoienihi)
@@ -68,14 +83,22 @@ Following Devtools Extensions are tested and guaranteed to work in Electron:
 * [Redux DevTools Extension](https://chrome.google.com/webstore/detail/redux-devtools/lmhkpmbekcpmknklioeibfkpmmfibljd)
 * [MobX Developer Tools](https://chrome.google.com/webstore/detail/mobx-developer-tools/pfgnfdagidkfgccljigdamigbcnndkod)
 
-### What should I do if a DevTools Extension is not working?
+### What should I do if a DevTools extension is not working?
 
-First please make sure the extension is still being maintained, some extensions
-can not even work for recent versions of Chrome browser, and we are not able to
-do anything for them.
+First, please make sure the extension is still being maintained and is compatible
+with the latest version of Google Chrome. We cannot provide additional support for
+unsupported extensions.
 
-Then file a bug at Electron's issues list, and describe which part of the
-extension is not working as expected.
+If the extension works on Chrome but not on Electron, file a bug in Electron's
+[issue tracker][issue-tracker] and describe which part
+of the extension is not working as expected.
 
 [devtools-extension]: https://developer.chrome.com/extensions/devtools
+[session]: ../api/session.md
 [react-devtools]: https://chrome.google.com/webstore/detail/react-developer-tools/fmkadmapgofadopljbjfkapdkoienihi
+[load-extension]: ../api/session.md#sesloadextensionpath
+[extension-structure]: ../api/structures/extension.md
+[remove-extension]: ../api/session.md#sesremoveextensionextensionid
+[electron-devtools-installer]: https://github.com/MarshallOfSound/electron-devtools-installer
+[supported-extension-apis]: ../api/extensions.md
+[issue-tracker]: https://github.com/electron/electron/issues
diff --git a/docs/tutorial/offscreen-rendering.md b/docs/tutorial/offscreen-rendering.md
index 74bfff02be469..93e07ee42c01e 100644
--- a/docs/tutorial/offscreen-rendering.md
+++ b/docs/tutorial/offscreen-rendering.md
@@ -9,7 +9,7 @@ Two modes of rendering can be used and only the dirty area is passed in the
 `'paint'` event to be more efficient. The rendering can be stopped, continued
 and the frame rate can be set. The specified frame rate is a top limit value,
 when there is nothing happening on a webpage, no frames are generated. The
-maximum frame rate is 60, because above that there is no benefit, only
+maximum frame rate is 240, because above that there is no benefit, only
 performance loss.
 
 **Note:** An offscreen window is always created as a [Frameless Window](../api/frameless-window.md).
diff --git a/docs/tutorial/support.md b/docs/tutorial/support.md
index e7e5798e5a50b..ce2cb6ddad485 100644
--- a/docs/tutorial/support.md
+++ b/docs/tutorial/support.md
@@ -9,8 +9,12 @@ If you're looking for programming help,
 for answers to questions,
 or to join in discussion with other developers who use Electron,
 you can interact with the community in these locations:
-- [`electron`](https://discuss.atom.io/c/electron) category on the Atom
-forums
+- [`Electron's Discord`](https://discord.com/invite/electron) has channels for:
+  - Getting help
+  - Ecosystem apps like [Electron Forge](https://github.com/electron-userland/electron-forge) and [Electron Fiddle](https://github.com/electron/fiddle)
+  - Sharing ideas with other Electron app developers
+  - And more!
+- [`electron`](https://discuss.atom.io/c/electron) category on the Atom forums
 - `#atom-shell` channel on Freenode
 - `#electron` channel on [Atom's Slack](https://discuss.atom.io/t/join-us-on-slack/16638?source_topic_id=25406)
 - [`electron-ru`](https://telegram.me/electron_ru) *(Russian)*
diff --git a/electron_paks.gni b/electron_paks.gni
index 3ba06a4982136..cdb96f2561a8d 100644
--- a/electron_paks.gni
+++ b/electron_paks.gni
@@ -54,7 +54,6 @@ template("electron_extra_paks") {
                            ])
     output = "${invoker.output_dir}/resources.pak"
     sources = [
-      "$root_gen_dir/chrome/print_preview_pdf_resources.pak",
       "$root_gen_dir/components/components_resources.pak",
       "$root_gen_dir/content/browser/resources/media/media_internals_resources.pak",
       "$root_gen_dir/content/browser/tracing/tracing_resources.pak",
@@ -69,7 +68,6 @@ template("electron_extra_paks") {
       "$target_gen_dir/electron_resources.pak",
     ]
     deps = [
-      "//chrome/browser/resources:print_preview_pdf_resources",
       "//components/resources",
       "//content:content_resources",
       "//content:dev_ui_content_resources",
@@ -94,6 +92,10 @@ template("electron_extra_paks") {
     sources +=
         [ "$root_gen_dir/content/browser/devtools/devtools_resources.pak" ]
     deps += [ "//content/browser/devtools:devtools_resources" ]
+    if (enable_pdf_viewer) {
+      sources += [ "$root_gen_dir/chrome/print_preview_pdf_resources.pak" ]
+      deps += [ "//chrome/browser/resources:print_preview_pdf_resources" ]
+    }
     if (enable_print_preview) {
       sources += [ "$root_gen_dir/chrome/print_preview_resources.pak" ]
       deps += [ "//chrome/browser/resources:print_preview_resources" ]
diff --git a/filenames.auto.gni b/filenames.auto.gni
index cdac19998e960..876e12f29123c 100644
--- a/filenames.auto.gni
+++ b/filenames.auto.gni
@@ -119,8 +119,6 @@ auto_filenames = {
     "docs/api/structures/shared-worker-info.md",
     "docs/api/structures/shortcut-details.md",
     "docs/api/structures/size.md",
-    "docs/api/structures/stream-protocol-response.md",
-    "docs/api/structures/string-protocol-response.md",
     "docs/api/structures/task.md",
     "docs/api/structures/thumbar-button.md",
     "docs/api/structures/trace-categories-and-options.md",
@@ -206,7 +204,7 @@ auto_filenames = {
     "lib/browser/api/module-list.ts",
     "lib/browser/api/native-image.ts",
     "lib/browser/api/native-theme.ts",
-    "lib/browser/api/net-log.js",
+    "lib/browser/api/net-log.ts",
     "lib/browser/api/net.ts",
     "lib/browser/api/notification.js",
     "lib/browser/api/power-monitor.ts",
diff --git a/filenames.gni b/filenames.gni
index bd2284e045233..8019dfcee4aac 100644
--- a/filenames.gni
+++ b/filenames.gni
@@ -184,8 +184,12 @@ filenames = {
     "shell/browser/electron_web_ui_controller_factory.h",
     "shell/browser/event_emitter_mixin.cc",
     "shell/browser/event_emitter_mixin.h",
+    "shell/browser/extended_web_contents_observer.h",
     "shell/browser/feature_list.cc",
     "shell/browser/feature_list.h",
+    "shell/browser/file_select_helper.cc",
+    "shell/browser/file_select_helper.h",
+    "shell/browser/file_select_helper_mac.mm",
     "shell/browser/font_defaults.cc",
     "shell/browser/font_defaults.h",
     "shell/browser/javascript_environment.cc",
@@ -345,6 +349,7 @@ filenames = {
     "shell/browser/ui/devtools_manager_delegate.h",
     "shell/browser/ui/devtools_ui.cc",
     "shell/browser/ui/devtools_ui.h",
+    "shell/browser/ui/drag_util.cc",
     "shell/browser/ui/drag_util.h",
     "shell/browser/ui/drag_util_mac.mm",
     "shell/browser/ui/drag_util_views.cc",
@@ -626,6 +631,8 @@ filenames = {
     "shell/browser/extensions/api/resources_private/resources_private_api.h",
     "shell/browser/extensions/api/runtime/electron_runtime_api_delegate.cc",
     "shell/browser/extensions/api/runtime/electron_runtime_api_delegate.h",
+    "shell/browser/extensions/api/management/electron_management_api_delegate.cc",
+    "shell/browser/extensions/api/management/electron_management_api_delegate.h",
     "shell/browser/extensions/api/tabs/tabs_api.cc",
     "shell/browser/extensions/api/tabs/tabs_api.h",
     "shell/browser/extensions/api/streams_private/streams_private_api.cc",
diff --git a/lib/browser/api/app.ts b/lib/browser/api/app.ts
index 771b85542c09a..a8b6fc20e82af 100644
--- a/lib/browser/api/app.ts
+++ b/lib/browser/api/app.ts
@@ -135,6 +135,10 @@ for (const name of events) {
   });
 }
 
+app.on('-session-created' as any, (event, session) => {
+  app.emit('session-created', session);
+});
+
 // Deprecate allowRendererProcessReuse but only if they set it to false, no need to log if
 // they are setting it to true
 deprecate.removeProperty(app, 'allowRendererProcessReuse', [false]);
diff --git a/lib/browser/api/browser-window.js b/lib/browser/api/browser-window.js
index 7c3e8579831f2..bf0cfe2a9face 100644
--- a/lib/browser/api/browser-window.js
+++ b/lib/browser/api/browser-window.js
@@ -30,9 +30,11 @@ BrowserWindow.prototype._init = function () {
   // Though this hack is only needed on macOS when the app is launched from
   // Finder, we still do it on all platforms in case of other bugs we don't
   // know.
-  this.webContents.once('load-url', function () {
-    this.focus();
-  });
+  if (this.webContents._initiallyShown) {
+    this.webContents.once('load-url', function () {
+      this.focus();
+    });
+  }
 
   // Redirect focus/blur event to app instance too.
   this.on('blur', (event) => {
diff --git a/lib/browser/api/menu-utils.js b/lib/browser/api/menu-utils.js
index 493f04c19c7b0..c7325198f1bc8 100644
--- a/lib/browser/api/menu-utils.js
+++ b/lib/browser/api/menu-utils.js
@@ -160,8 +160,14 @@ function sortGroups (groups) {
 }
 
 function sortMenuItems (menuItems) {
-  const isSeparator = (item) => item.type === 'separator';
-  const separators = menuItems.filter(i => i.type === 'separator');
+  const isSeparator = (opts) => {
+    return opts.type === 'separator' &&
+    !opts.before &&
+    !opts.after &&
+    !opts.beforeGroupContaining &&
+    !opts.afterGroupContaining;
+  };
+  const separators = menuItems.filter(isSeparator);
 
   // Split the items into their implicit groups based upon separators.
   const groups = splitArray(menuItems, isSeparator);
diff --git a/lib/browser/api/menu.js b/lib/browser/api/menu.js
index c0db47e77b6b1..095d2d675d605 100644
--- a/lib/browser/api/menu.js
+++ b/lib/browser/api/menu.js
@@ -182,11 +182,11 @@ Menu.buildFromTemplate = function (template) {
     throw new TypeError('Invalid template for MenuItem: must have at least one of label, role or type');
   }
 
-  const filtered = removeExtraSeparators(template);
-  const sorted = sortTemplate(filtered);
+  const sorted = sortTemplate(template);
+  const filtered = removeExtraSeparators(sorted);
 
   const menu = new Menu();
-  sorted.forEach(item => {
+  filtered.forEach(item => {
     if (item instanceof MenuItem) {
       menu.append(item);
     } else {
diff --git a/lib/browser/api/net-log.js b/lib/browser/api/net-log.js
deleted file mode 100644
index 11b8071880ab7..0000000000000
--- a/lib/browser/api/net-log.js
+++ /dev/null
@@ -1,32 +0,0 @@
-'use strict';
-
-// TODO(deepak1556): Deprecate and remove standalone netLog module,
-// it is now a property of session module.
-const { app, session } = require('electron');
-
-// Fallback to default session.
-Object.setPrototypeOf(module.exports, new Proxy({}, {
-  get (target, property) {
-    if (!app.isReady()) return;
-
-    const netLog = session.defaultSession.netLog;
-
-    if (!Object.prototype.hasOwnProperty.call(Object.getPrototypeOf(netLog), property)) return;
-
-    // check for properties on the prototype chain  that aren't functions
-    if (typeof netLog[property] !== 'function') return netLog[property];
-
-    // Returning a native function directly would throw error.
-    return (...args) => netLog[property](...args);
-  },
-
-  ownKeys () {
-    if (!app.isReady()) return [];
-
-    return Object.getOwnPropertyNames(Object.getPrototypeOf(session.defaultSession.netLog));
-  },
-
-  getOwnPropertyDescriptor (target) {
-    return { configurable: true, enumerable: true };
-  }
-}));
diff --git a/lib/browser/api/net-log.ts b/lib/browser/api/net-log.ts
new file mode 100644
index 0000000000000..81a9e5152435f
--- /dev/null
+++ b/lib/browser/api/net-log.ts
@@ -0,0 +1,22 @@
+// TODO(deepak1556): Deprecate and remove standalone netLog module,
+// it is now a property of session module.
+import { app, session } from 'electron';
+
+const startLogging: typeof session.defaultSession.netLog.startLogging = async (path, options) => {
+  if (!app.isReady()) return;
+  return session.defaultSession.netLog.startLogging(path, options);
+};
+
+const stopLogging: typeof session.defaultSession.netLog.stopLogging = async () => {
+  if (!app.isReady()) return;
+  return session.defaultSession.netLog.stopLogging();
+};
+
+export default {
+  startLogging,
+  stopLogging,
+  get currentlyLogging (): boolean {
+    if (!app.isReady()) return false;
+    return session.defaultSession.netLog.currentlyLogging;
+  }
+};
diff --git a/lib/browser/api/system-preferences.ts b/lib/browser/api/system-preferences.ts
index 9ad72dec0ea24..bdc77c4dcd9c9 100644
--- a/lib/browser/api/system-preferences.ts
+++ b/lib/browser/api/system-preferences.ts
@@ -16,7 +16,7 @@ if ('getAppLevelAppearance' in systemPreferences) {
 }
 
 if ('getEffectiveAppearance' in systemPreferences) {
-  const nativeEAGetter = systemPreferences.getAppLevelAppearance;
+  const nativeEAGetter = systemPreferences.getEffectiveAppearance;
   Object.defineProperty(SystemPreferences.prototype, 'effectiveAppearance', {
     get: () => nativeEAGetter.call(systemPreferences)
   });
diff --git a/lib/browser/api/top-level-window.js b/lib/browser/api/top-level-window.js
index 9a90887fcf250..933a168a0fe56 100644
--- a/lib/browser/api/top-level-window.js
+++ b/lib/browser/api/top-level-window.js
@@ -45,7 +45,7 @@ Object.defineProperty(TopLevelWindow.prototype, 'kiosk', {
 });
 
 Object.defineProperty(TopLevelWindow.prototype, 'documentEdited', {
-  get: function () { return this.isFullscreen(); },
+  get: function () { return this.isDocumentEdited(); },
   set: function (edited) { this.setDocumentEdited(edited); }
 });
 
diff --git a/lib/browser/api/web-contents.js b/lib/browser/api/web-contents.js
index ef7638495051f..3def8d218907e 100644
--- a/lib/browser/api/web-contents.js
+++ b/lib/browser/api/web-contents.js
@@ -167,29 +167,29 @@ WebContents.prototype._sendInternalToAll = function (channel, ...args) {
 
   return this._send(internal, sendToAll, channel, args);
 };
-WebContents.prototype.sendToFrame = function (frameId, channel, ...args) {
+WebContents.prototype.sendToFrame = function (frame, channel, ...args) {
   if (typeof channel !== 'string') {
     throw new Error('Missing required channel argument');
-  } else if (typeof frameId !== 'number') {
-    throw new Error('Missing required frameId argument');
+  } else if (!(typeof frame === 'number' || Array.isArray(frame))) {
+    throw new Error('Missing required frame argument (must be number or array)');
   }
 
   const internal = false;
   const sendToAll = false;
 
-  return this._sendToFrame(internal, sendToAll, frameId, channel, args);
+  return this._sendToFrame(internal, sendToAll, frame, channel, args);
 };
-WebContents.prototype._sendToFrameInternal = function (frameId, channel, ...args) {
+WebContents.prototype._sendToFrameInternal = function (frame, channel, ...args) {
   if (typeof channel !== 'string') {
     throw new Error('Missing required channel argument');
-  } else if (typeof frameId !== 'number') {
-    throw new Error('Missing required frameId argument');
+  } else if (!(typeof frame === 'number' || Array.isArray(frame))) {
+    throw new Error('Missing required frame argument (must be number or array)');
   }
 
   const internal = true;
   const sendToAll = false;
 
-  return this._sendToFrame(internal, sendToAll, frameId, channel, args);
+  return this._sendToFrame(internal, sendToAll, frame, channel, args);
 };
 
 // Following methods are mapped to webFrame.
@@ -445,8 +445,9 @@ WebContents.prototype.loadFile = function (filePath, options = {}) {
 };
 
 const addReplyToEvent = (event) => {
+  const { processId, frameId } = event;
   event.reply = (...args) => {
-    event.sender.sendToFrame(event.frameId, ...args);
+    event.sender.sendToFrame([processId, frameId], ...args);
   };
 };
 
@@ -467,6 +468,10 @@ const addReturnValueToEvent = (event) => {
   });
 };
 
+const loggingEnabled = () => {
+  return process.env.ELECTRON_ENABLE_LOGGING || app.commandLine.hasSwitch('enable-logging');
+};
+
 // Add JavaScript wrappers for WebContents class.
 WebContents.prototype._init = function () {
   // The navigation controller.
@@ -535,8 +540,13 @@ WebContents.prototype._init = function () {
     app.emit('renderer-process-crashed', event, this, ...args);
   });
 
-  this.on('render-process-gone', (event, ...args) => {
-    app.emit('render-process-gone', event, this, ...args);
+  this.on('render-process-gone', (event, details) => {
+    app.emit('render-process-gone', event, this, details);
+
+    // Log out a hint to help users better debug renderer crashes.
+    if (loggingEnabled()) {
+      console.info(`Renderer process ${details.reason} - see https://www.electronjs.org/docs/tutorial/application-debugging for potential debugging information.`);
+    }
   });
 
   // The devtools requests the webContents to reload.
@@ -578,7 +588,6 @@ WebContents.prototype._init = function () {
         width: 800,
         height: 600,
         webContents,
-        title: frameName,
         webPreferences,
         ...options
       };
@@ -596,6 +605,15 @@ WebContents.prototype._init = function () {
     app.emit('login', event, this, ...args);
   });
 
+  this.on('ready-to-show', () => {
+    const owner = this.getOwnerBrowserWindow();
+    if (owner && !owner.isDestroyed()) {
+      process.nextTick(() => {
+        owner.emit('ready-to-show');
+      });
+    }
+  });
+
   const event = process.electronBinding('event').createEmpty();
   app.emit('web-contents-created', event, this);
 
diff --git a/lib/browser/desktop-capturer.ts b/lib/browser/desktop-capturer.ts
index 9d9569ea27f06..e0fbbc94fa360 100644
--- a/lib/browser/desktop-capturer.ts
+++ b/lib/browser/desktop-capturer.ts
@@ -48,6 +48,9 @@ export const getSourcesImpl = (event: Electron.IpcMainEvent | null, args: Electr
       }
       // Remove from currentlyRunning once we resolve or reject
       currentlyRunning = currentlyRunning.filter(running => running.options !== options);
+      if (event) {
+        event.sender.removeListener('destroyed', stopRunning);
+      }
     };
 
     capturer._onerror = (error: string) => {
@@ -66,7 +69,7 @@ export const getSourcesImpl = (event: Electron.IpcMainEvent | null, args: Electr
     // reference to emit and the capturer itself so that it never dispatches
     // back to the renderer
     if (event) {
-      event.sender.once('destroyed', () => stopRunning());
+      event.sender.once('destroyed', stopRunning);
     }
   });
 
diff --git a/lib/browser/remote/server.ts b/lib/browser/remote/server.ts
index 2ed49817a8c0b..038e83a550af3 100644
--- a/lib/browser/remote/server.ts
+++ b/lib/browser/remote/server.ts
@@ -276,7 +276,7 @@ const fakeConstructor = (constructor: Function, name: string) =>
   });
 
 // Convert array of meta data from renderer into array of real values.
-const unwrapArgs = function (sender: electron.WebContents, frameId: number, contextId: string, args: any[]) {
+const unwrapArgs = function (sender: electron.WebContents, frameId: [number, number], contextId: string, args: any[]) {
   const metaToValue = function (meta: MetaTypeFromRenderer): any {
     switch (meta.type) {
       case 'nativeimage':
@@ -331,7 +331,7 @@ const unwrapArgs = function (sender: electron.WebContents, frameId: number, cont
         v8Util.setHiddenValue(callIntoRenderer, 'location', meta.location);
         Object.defineProperty(callIntoRenderer, 'length', { value: meta.length });
 
-        v8Util.setRemoteCallbackFreer(callIntoRenderer, frameId, contextId, meta.id, sender);
+        v8Util.setRemoteCallbackFreer(callIntoRenderer, frameId[0], frameId[1], contextId, meta.id, sender);
         rendererFunctions.set(objectId, callIntoRenderer);
         return callIntoRenderer;
       }
@@ -480,7 +480,7 @@ handleRemoteCommand('ELECTRON_BROWSER_CURRENT_WEB_CONTENTS', function (event, co
 });
 
 handleRemoteCommand('ELECTRON_BROWSER_CONSTRUCTOR', function (event, contextId, id, args) {
-  args = unwrapArgs(event.sender, event.frameId, contextId, args);
+  args = unwrapArgs(event.sender, [event.processId, event.frameId], contextId, args);
   const constructor = objectsRegistry.get(id);
 
   if (constructor == null) {
@@ -491,7 +491,7 @@ handleRemoteCommand('ELECTRON_BROWSER_CONSTRUCTOR', function (event, contextId,
 });
 
 handleRemoteCommand('ELECTRON_BROWSER_FUNCTION_CALL', function (event, contextId, id, args) {
-  args = unwrapArgs(event.sender, event.frameId, contextId, args);
+  args = unwrapArgs(event.sender, [event.processId, event.frameId], contextId, args);
   const func = objectsRegistry.get(id);
 
   if (func == null) {
@@ -508,7 +508,7 @@ handleRemoteCommand('ELECTRON_BROWSER_FUNCTION_CALL', function (event, contextId
 });
 
 handleRemoteCommand('ELECTRON_BROWSER_MEMBER_CONSTRUCTOR', function (event, contextId, id, method, args) {
-  args = unwrapArgs(event.sender, event.frameId, contextId, args);
+  args = unwrapArgs(event.sender, [event.processId, event.frameId], contextId, args);
   const object = objectsRegistry.get(id);
 
   if (object == null) {
@@ -519,7 +519,7 @@ handleRemoteCommand('ELECTRON_BROWSER_MEMBER_CONSTRUCTOR', function (event, cont
 });
 
 handleRemoteCommand('ELECTRON_BROWSER_MEMBER_CALL', function (event, contextId, id, method, args) {
-  args = unwrapArgs(event.sender, event.frameId, contextId, args);
+  args = unwrapArgs(event.sender, [event.processId, event.frameId], contextId, args);
   const object = objectsRegistry.get(id);
 
   if (object == null) {
@@ -536,7 +536,7 @@ handleRemoteCommand('ELECTRON_BROWSER_MEMBER_CALL', function (event, contextId,
 });
 
 handleRemoteCommand('ELECTRON_BROWSER_MEMBER_SET', function (event, contextId, id, name, args) {
-  args = unwrapArgs(event.sender, event.frameId, contextId, args);
+  args = unwrapArgs(event.sender, [event.processId, event.frameId], contextId, args);
   const obj = objectsRegistry.get(id);
 
   if (obj == null) {
diff --git a/lib/browser/rpc-server.js b/lib/browser/rpc-server.js
index d9e84754ee316..bdea74b2e7c8b 100644
--- a/lib/browser/rpc-server.js
+++ b/lib/browser/rpc-server.js
@@ -83,7 +83,7 @@ const getPreloadScript = async function (preloadPath) {
   let preloadSrc = null;
   let preloadError = null;
   try {
-    preloadSrc = (await fs.promises.readFile(preloadPath)).toString();
+    preloadSrc = await fs.promises.readFile(preloadPath, 'utf8');
   } catch (error) {
     preloadError = error;
   }
diff --git a/lib/common/asar.js b/lib/common/asar.js
index e7dd3d26dcedc..5c1779afd72e9 100644
--- a/lib/common/asar.js
+++ b/lib/common/asar.js
@@ -597,7 +597,13 @@
       if (options.withFileTypes) {
         const dirents = [];
         for (const file of files) {
-          const stats = archive.stat(file);
+          const childPath = path.join(filePath, file);
+          const stats = archive.stat(childPath);
+          if (!stats) {
+            const error = createError(AsarError.NOT_FOUND, { asarPath, filePath: childPath });
+            nextTick(callback, [error]);
+            return;
+          }
           if (stats.isFile) {
             dirents.push(new fs.Dirent(file, fs.constants.UV_DIRENT_FILE));
           } else if (stats.isDirectory) {
@@ -633,7 +639,11 @@
       if (options.withFileTypes) {
         const dirents = [];
         for (const file of files) {
-          const stats = archive.stat(file);
+          const childPath = path.join(filePath, file);
+          const stats = archive.stat(childPath);
+          if (!stats) {
+            throw createError(AsarError.NOT_FOUND, { asarPath, filePath: childPath });
+          }
           if (stats.isFile) {
             dirents.push(new fs.Dirent(file, fs.constants.UV_DIRENT_FILE));
           } else if (stats.isDirectory) {
diff --git a/lib/common/parse-features-string.ts b/lib/common/parse-features-string.ts
index cfc817351274a..698b178dc6798 100644
--- a/lib/common/parse-features-string.ts
+++ b/lib/common/parse-features-string.ts
@@ -38,7 +38,7 @@ const keysOfTypeNumber = ['top', 'left', ...Object.keys(keysOfTypeNumberCompileT
 type CoercedValue = string | number | boolean;
 function coerce (key: string, value: string): CoercedValue {
   if (keysOfTypeNumber.includes(key)) {
-    return Number(value);
+    return parseInt(value, 10);
   }
 
   switch (value) {
diff --git a/lib/common/reset-search-paths.ts b/lib/common/reset-search-paths.ts
index cad6d37d1ef70..de2cac114b3bb 100644
--- a/lib/common/reset-search-paths.ts
+++ b/lib/common/reset-search-paths.ts
@@ -43,10 +43,10 @@ if (process.type === 'renderer') {
 }
 
 const originalResolveFilename = Module._resolveFilename;
-Module._resolveFilename = function (request: string, parent: NodeModule, isMain: boolean) {
+Module._resolveFilename = function (request: string, parent: NodeModule, isMain: boolean, options?: { paths: Array<string>}) {
   if (request === 'electron' || request.startsWith('electron/')) {
     return 'electron';
   } else {
-    return originalResolveFilename(request, parent, isMain);
+    return originalResolveFilename(request, parent, isMain, options);
   }
 };
diff --git a/lib/renderer/api/remote.js b/lib/renderer/api/remote.js
index 9773a266ef14e..3501d7ec2dcb6 100644
--- a/lib/renderer/api/remote.js
+++ b/lib/renderer/api/remote.js
@@ -276,7 +276,7 @@ function metaToError (meta) {
 }
 
 function handleMessage (channel, handler) {
-  ipcRendererInternal.on(channel, (event, passedContextId, id, ...args) => {
+  ipcRendererInternal.onMessageFromMain(channel, (event, passedContextId, id, ...args) => {
     if (passedContextId === contextId) {
       handler(id, ...args);
     } else {
diff --git a/lib/renderer/api/web-frame.ts b/lib/renderer/api/web-frame.ts
index cb13c0fe54899..8e22181b7ee30 100644
--- a/lib/renderer/api/web-frame.ts
+++ b/lib/renderer/api/web-frame.ts
@@ -49,7 +49,7 @@ class WebFrame extends EventEmitter {
 }
 
 const { hasSwitch } = process.electronBinding('command_line');
-const worldSafeJS = hasSwitch('world-safe-execute-javascript') && hasSwitch('context-isolation');
+const worldSafeJS = hasSwitch('world-safe-execute-javascript') || !hasSwitch('context-isolation');
 
 // Populate the methods.
 for (const name in binding) {
diff --git a/lib/renderer/extensions/web-navigation.ts b/lib/renderer/extensions/web-navigation.ts
index 768eb342804b1..a8000bfd7afa6 100644
--- a/lib/renderer/extensions/web-navigation.ts
+++ b/lib/renderer/extensions/web-navigation.ts
@@ -6,11 +6,11 @@ class WebNavigation {
   private onCompleted = new Event()
 
   constructor () {
-    ipcRendererInternal.on('CHROME_WEBNAVIGATION_ONBEFORENAVIGATE', (event: Electron.IpcRendererEvent, details: any) => {
+    ipcRendererInternal.onMessageFromMain('CHROME_WEBNAVIGATION_ONBEFORENAVIGATE', (event: Electron.IpcRendererEvent, details: any) => {
       this.onBeforeNavigate.emit(details);
     });
 
-    ipcRendererInternal.on('CHROME_WEBNAVIGATION_ONCOMPLETED', (event: Electron.IpcRendererEvent, details: any) => {
+    ipcRendererInternal.onMessageFromMain('CHROME_WEBNAVIGATION_ONCOMPLETED', (event: Electron.IpcRendererEvent, details: any) => {
       this.onCompleted.emit(details);
     });
   }
diff --git a/lib/renderer/ipc-renderer-internal-utils.ts b/lib/renderer/ipc-renderer-internal-utils.ts
index 709880ffe5cb1..62d12da389af9 100644
--- a/lib/renderer/ipc-renderer-internal-utils.ts
+++ b/lib/renderer/ipc-renderer-internal-utils.ts
@@ -3,7 +3,7 @@ import { ipcRendererInternal } from '@electron/internal/renderer/ipc-renderer-in
 type IPCHandler = (event: Electron.IpcRendererEvent, ...args: any[]) => any
 
 export const handle = function <T extends IPCHandler> (channel: string, handler: T) {
-  ipcRendererInternal.on(channel, async (event, requestId, ...args) => {
+  ipcRendererInternal.onMessageFromMain(channel, async (event, requestId, ...args) => {
     const replyChannel = `${channel}_RESPONSE_${requestId}`;
     try {
       event.sender.send(replyChannel, null, await handler(event, ...args));
diff --git a/lib/renderer/ipc-renderer-internal.ts b/lib/renderer/ipc-renderer-internal.ts
index 6c4098f0f908d..89ce236708f4c 100644
--- a/lib/renderer/ipc-renderer-internal.ts
+++ b/lib/renderer/ipc-renderer-internal.ts
@@ -30,4 +30,27 @@ if (!ipcRendererInternal.send) {
     }
     return result;
   };
+
+  ipcRendererInternal.onMessageFromMain = function (channel: string, listener: (event: Electron.IpcRendererEvent, ...args: any[]) => void) {
+    return ipcRendererInternal.on(channel, (event, ...args) => {
+      if (event.senderId !== 0) {
+        console.error(`Message ${channel} sent by unexpected WebContents (${event.senderId})`);
+        return;
+      }
+
+      listener(event, ...args);
+    });
+  };
+
+  ipcRendererInternal.onceMessageFromMain = function (channel: string, listener: (event: Electron.IpcRendererEvent, ...args: any[]) => void) {
+    return ipcRendererInternal.on(channel, function wrapper (event, ...args) {
+      if (event.senderId !== 0) {
+        console.error(`Message ${channel} sent by unexpected WebContents (${event.senderId})`);
+        return;
+      }
+
+      ipcRendererInternal.removeListener(channel, wrapper);
+      listener(event, ...args);
+    });
+  };
 }
diff --git a/lib/renderer/security-warnings.ts b/lib/renderer/security-warnings.ts
index accbbc927979b..4f17200b5ffbb 100644
--- a/lib/renderer/security-warnings.ts
+++ b/lib/renderer/security-warnings.ts
@@ -76,10 +76,11 @@ const isLocalhost = function () {
  *
  * @returns {boolean} Is a CSP with `unsafe-eval` set?
  */
-const isUnsafeEvalEnabled = function () {
-  return webFrame.executeJavaScript(`(${(() => {
+const isUnsafeEvalEnabled: () => Promise<boolean> = function () {
+  // Call _executeJavaScript to bypass the world-safe deprecation warning
+  return (webFrame as any)._executeJavaScript(`(${(() => {
     try {
-      new Function(''); // eslint-disable-line no-new,no-new-func
+      eval(window.trustedTypes.emptyScript); // eslint-disable-line no-eval
     } catch {
       return false;
     }
@@ -178,7 +179,7 @@ const warnAboutInsecureCSP = function () {
 
     console.warn('%cElectron Security Warning (Insecure Content-Security-Policy)',
       'font-weight: bold;', warning);
-  });
+  }).catch(() => {});
 };
 
 /**
@@ -223,7 +224,7 @@ const warnAboutExperimentalFeatures = function (webPreferences?: Electron.WebPre
 const warnAboutEnableBlinkFeatures = function (webPreferences?: Electron.WebPreferences) {
   if (!webPreferences ||
     !Object.prototype.hasOwnProperty.call(webPreferences, 'enableBlinkFeatures') ||
-    (webPreferences.enableBlinkFeatures && webPreferences.enableBlinkFeatures.length === 0)) {
+    (webPreferences.enableBlinkFeatures != null && webPreferences.enableBlinkFeatures.length === 0)) {
     return;
   }
 
diff --git a/lib/renderer/web-view/guest-view-internal.ts b/lib/renderer/web-view/guest-view-internal.ts
index 0c0d9804ae7f5..ccdc53f9c1060 100644
--- a/lib/renderer/web-view/guest-view-internal.ts
+++ b/lib/renderer/web-view/guest-view-internal.ts
@@ -1,4 +1,4 @@
-import { webFrame, IpcMessageEvent } from 'electron';
+import { webFrame } from 'electron';
 import { ipcRendererInternal } from '@electron/internal/renderer/ipc-renderer-internal';
 import * as ipcRendererUtils from '@electron/internal/renderer/ipc-renderer-internal-utils';
 
@@ -27,6 +27,7 @@ const WEB_VIEW_EVENTS: Record<string, Array<string>> = {
   'focus-change': ['focus', 'guestInstanceId'],
   close: [],
   crashed: [],
+  'render-process-gone': ['details'],
   'plugin-crashed': ['name', 'version'],
   destroyed: [],
   'page-title-updated': ['title', 'explicitSet'],
@@ -51,38 +52,33 @@ const dispatchEvent = function (
     dispatchEvent(webView, DEPRECATED_EVENTS[eventName], eventKey, ...args);
   }
 
-  const domEvent = new Event(eventName) as ElectronInternal.WebViewEvent;
+  const props: Record<string, any> = {};
   WEB_VIEW_EVENTS[eventKey].forEach((prop, index) => {
-    (domEvent as any)[prop] = args[index];
+    props[prop] = args[index];
   });
 
-  webView.dispatchEvent(domEvent);
+  webView.dispatchEvent(eventName, props);
 
   if (eventName === 'load-commit') {
-    webView.onLoadCommit(domEvent);
+    webView.onLoadCommit(props);
   } else if (eventName === 'focus-change') {
     webView.onFocusChange();
   }
 };
 
 export function registerEvents (webView: WebViewImpl, viewInstanceId: number) {
-  ipcRendererInternal.on(`ELECTRON_GUEST_VIEW_INTERNAL_DESTROY_GUEST-${viewInstanceId}`, function () {
+  ipcRendererInternal.onMessageFromMain(`ELECTRON_GUEST_VIEW_INTERNAL_DESTROY_GUEST-${viewInstanceId}`, function () {
     webView.guestInstanceId = undefined;
     webView.reset();
-    const domEvent = new Event('destroyed');
-    webView.dispatchEvent(domEvent);
+    webView.dispatchEvent('destroyed');
   });
 
-  ipcRendererInternal.on(`ELECTRON_GUEST_VIEW_INTERNAL_DISPATCH_EVENT-${viewInstanceId}`, function (event, eventName, ...args) {
+  ipcRendererInternal.onMessageFromMain(`ELECTRON_GUEST_VIEW_INTERNAL_DISPATCH_EVENT-${viewInstanceId}`, function (event, eventName, ...args) {
     dispatchEvent(webView, eventName, eventName, ...args);
   });
 
-  ipcRendererInternal.on(`ELECTRON_GUEST_VIEW_INTERNAL_IPC_MESSAGE-${viewInstanceId}`, function (event, channel, ...args) {
-    const domEvent = new Event('ipc-message') as IpcMessageEvent;
-    domEvent.channel = channel;
-    domEvent.args = args;
-
-    webView.dispatchEvent(domEvent);
+  ipcRendererInternal.onMessageFromMain(`ELECTRON_GUEST_VIEW_INTERNAL_IPC_MESSAGE-${viewInstanceId}`, function (event, channel, ...args) {
+    webView.dispatchEvent('ipc-message', { channel, args });
   });
 }
 
diff --git a/lib/renderer/web-view/web-view-attributes.ts b/lib/renderer/web-view/web-view-attributes.ts
index 4ce18e9a9d296..5ce4a7f9d8199 100644
--- a/lib/renderer/web-view/web-view-attributes.ts
+++ b/lib/renderer/web-view/web-view-attributes.ts
@@ -17,7 +17,7 @@ interface MutationHandler {
 
 // Attribute objects.
 // Default implementation of a WebView attribute.
-class WebViewAttribute implements MutationHandler {
+export class WebViewAttribute implements MutationHandler {
   public value: any;
   public ignoreMutation = false;
 
@@ -78,7 +78,7 @@ class BooleanAttribute extends WebViewAttribute {
 }
 
 // Attribute representing the state of the storage partition.
-class PartitionAttribute extends WebViewAttribute {
+export class PartitionAttribute extends WebViewAttribute {
   public validPartitionId = true
 
   constructor (public webViewImpl: WebViewImpl) {
@@ -102,7 +102,7 @@ class PartitionAttribute extends WebViewAttribute {
 }
 
 // Attribute that handles the location and navigation of the webview.
-class SrcAttribute extends WebViewAttribute {
+export class SrcAttribute extends WebViewAttribute {
   public observer!: MutationObserver;
 
   constructor (public webViewImpl: WebViewImpl) {
@@ -168,7 +168,7 @@ class SrcAttribute extends WebViewAttribute {
   }
 
   public parse () {
-    if (!this.webViewImpl.elementAttached || !this.webViewImpl.attributes[WEB_VIEW_CONSTANTS.ATTRIBUTE_PARTITION].validPartitionId || !this.getValue()) {
+    if (!this.webViewImpl.elementAttached || !(this.webViewImpl.attributes.get(WEB_VIEW_CONSTANTS.ATTRIBUTE_PARTITION) as PartitionAttribute).validPartitionId || !this.getValue()) {
       return;
     }
     if (this.webViewImpl.guestInstanceId == null) {
@@ -182,12 +182,12 @@ class SrcAttribute extends WebViewAttribute {
     // Navigate to |this.src|.
     const opts: Record<string, string> = {};
 
-    const httpreferrer = this.webViewImpl.attributes[WEB_VIEW_CONSTANTS.ATTRIBUTE_HTTPREFERRER].getValue();
+    const httpreferrer = this.webViewImpl.attributes.get(WEB_VIEW_CONSTANTS.ATTRIBUTE_HTTPREFERRER)!.getValue();
     if (httpreferrer) {
       opts.httpReferrer = httpreferrer;
     }
 
-    const useragent = this.webViewImpl.attributes[WEB_VIEW_CONSTANTS.ATTRIBUTE_USERAGENT].getValue();
+    const useragent = this.webViewImpl.attributes.get(WEB_VIEW_CONSTANTS.ATTRIBUTE_USERAGENT)!.getValue();
     if (useragent) {
       opts.userAgent = useragent;
     }
@@ -274,19 +274,18 @@ class EnableRemoteModuleAttribute extends WebViewAttribute {
 
 // Sets up all of the webview attributes.
 WebViewImpl.prototype.setupWebViewAttributes = function () {
-  this.attributes = {};
-  this.attributes[WEB_VIEW_CONSTANTS.ATTRIBUTE_PARTITION] = new PartitionAttribute(this);
-  this.attributes[WEB_VIEW_CONSTANTS.ATTRIBUTE_SRC] = new SrcAttribute(this);
-  this.attributes[WEB_VIEW_CONSTANTS.ATTRIBUTE_HTTPREFERRER] = new HttpReferrerAttribute(this);
-  this.attributes[WEB_VIEW_CONSTANTS.ATTRIBUTE_USERAGENT] = new UserAgentAttribute(this);
-  this.attributes[WEB_VIEW_CONSTANTS.ATTRIBUTE_NODEINTEGRATION] = new BooleanAttribute(WEB_VIEW_CONSTANTS.ATTRIBUTE_NODEINTEGRATION, this);
-  this.attributes[WEB_VIEW_CONSTANTS.ATTRIBUTE_NODEINTEGRATIONINSUBFRAMES] = new BooleanAttribute(WEB_VIEW_CONSTANTS.ATTRIBUTE_NODEINTEGRATIONINSUBFRAMES, this);
-  this.attributes[WEB_VIEW_CONSTANTS.ATTRIBUTE_PLUGINS] = new BooleanAttribute(WEB_VIEW_CONSTANTS.ATTRIBUTE_PLUGINS, this);
-  this.attributes[WEB_VIEW_CONSTANTS.ATTRIBUTE_DISABLEWEBSECURITY] = new BooleanAttribute(WEB_VIEW_CONSTANTS.ATTRIBUTE_DISABLEWEBSECURITY, this);
-  this.attributes[WEB_VIEW_CONSTANTS.ATTRIBUTE_ALLOWPOPUPS] = new BooleanAttribute(WEB_VIEW_CONSTANTS.ATTRIBUTE_ALLOWPOPUPS, this);
-  this.attributes[WEB_VIEW_CONSTANTS.ATTRIBUTE_ENABLEREMOTEMODULE] = new EnableRemoteModuleAttribute(this);
-  this.attributes[WEB_VIEW_CONSTANTS.ATTRIBUTE_PRELOAD] = new PreloadAttribute(this);
-  this.attributes[WEB_VIEW_CONSTANTS.ATTRIBUTE_BLINKFEATURES] = new BlinkFeaturesAttribute(this);
-  this.attributes[WEB_VIEW_CONSTANTS.ATTRIBUTE_DISABLEBLINKFEATURES] = new DisableBlinkFeaturesAttribute(this);
-  this.attributes[WEB_VIEW_CONSTANTS.ATTRIBUTE_WEBPREFERENCES] = new WebPreferencesAttribute(this);
+  this.attributes.set(WEB_VIEW_CONSTANTS.ATTRIBUTE_PARTITION, new PartitionAttribute(this));
+  this.attributes.set(WEB_VIEW_CONSTANTS.ATTRIBUTE_SRC, new SrcAttribute(this));
+  this.attributes.set(WEB_VIEW_CONSTANTS.ATTRIBUTE_HTTPREFERRER, new HttpReferrerAttribute(this));
+  this.attributes.set(WEB_VIEW_CONSTANTS.ATTRIBUTE_USERAGENT, new UserAgentAttribute(this));
+  this.attributes.set(WEB_VIEW_CONSTANTS.ATTRIBUTE_NODEINTEGRATION, new BooleanAttribute(WEB_VIEW_CONSTANTS.ATTRIBUTE_NODEINTEGRATION, this));
+  this.attributes.set(WEB_VIEW_CONSTANTS.ATTRIBUTE_NODEINTEGRATIONINSUBFRAMES, new BooleanAttribute(WEB_VIEW_CONSTANTS.ATTRIBUTE_NODEINTEGRATIONINSUBFRAMES, this));
+  this.attributes.set(WEB_VIEW_CONSTANTS.ATTRIBUTE_PLUGINS, new BooleanAttribute(WEB_VIEW_CONSTANTS.ATTRIBUTE_PLUGINS, this));
+  this.attributes.set(WEB_VIEW_CONSTANTS.ATTRIBUTE_DISABLEWEBSECURITY, new BooleanAttribute(WEB_VIEW_CONSTANTS.ATTRIBUTE_DISABLEWEBSECURITY, this));
+  this.attributes.set(WEB_VIEW_CONSTANTS.ATTRIBUTE_ALLOWPOPUPS, new BooleanAttribute(WEB_VIEW_CONSTANTS.ATTRIBUTE_ALLOWPOPUPS, this));
+  this.attributes.set(WEB_VIEW_CONSTANTS.ATTRIBUTE_ENABLEREMOTEMODULE, new EnableRemoteModuleAttribute(this));
+  this.attributes.set(WEB_VIEW_CONSTANTS.ATTRIBUTE_PRELOAD, new PreloadAttribute(this));
+  this.attributes.set(WEB_VIEW_CONSTANTS.ATTRIBUTE_BLINKFEATURES, new BlinkFeaturesAttribute(this));
+  this.attributes.set(WEB_VIEW_CONSTANTS.ATTRIBUTE_DISABLEBLINKFEATURES, new DisableBlinkFeaturesAttribute(this));
+  this.attributes.set(WEB_VIEW_CONSTANTS.ATTRIBUTE_WEBPREFERENCES, new WebPreferencesAttribute(this));
 };
diff --git a/lib/renderer/web-view/web-view-constants.ts b/lib/renderer/web-view/web-view-constants.ts
index 433d12ae3b8ce..02bf33400f488 100644
--- a/lib/renderer/web-view/web-view-constants.ts
+++ b/lib/renderer/web-view/web-view-constants.ts
@@ -16,9 +16,6 @@ export const enum WEB_VIEW_CONSTANTS {
   ATTRIBUTE_DISABLEBLINKFEATURES = 'disableblinkfeatures',
   ATTRIBUTE_WEBPREFERENCES = 'webpreferences',
 
-  // Internal attribute.
-  ATTRIBUTE_INTERNALINSTANCEID = 'internalinstanceid',
-
   // Error messages.
   ERROR_MSG_ALREADY_NAVIGATED = 'The object has already navigated, so its partition cannot be changed.',
   ERROR_MSG_CANNOT_INJECT_SCRIPT = '<webview> = ' + 'Script cannot be injected into content until the page has loaded.',
diff --git a/lib/renderer/web-view/web-view-element.ts b/lib/renderer/web-view/web-view-element.ts
index dcf3dbc753400..c63748456abad 100644
--- a/lib/renderer/web-view/web-view-element.ts
+++ b/lib/renderer/web-view/web-view-element.ts
@@ -10,6 +10,7 @@
 
 import { WEB_VIEW_CONSTANTS } from '@electron/internal/renderer/web-view/web-view-constants';
 import { WebViewImpl as IWebViewImpl, webViewImplModule } from '@electron/internal/renderer/web-view/web-view-impl';
+import type { SrcAttribute } from '@electron/internal/renderer/web-view/web-view-attributes';
 
 // Return a WebViewElement class that is defined in this context.
 const defineWebViewElement = (v8Util: NodeJS.V8UtilBinding, webViewImpl: typeof webViewImplModule) => {
@@ -38,7 +39,13 @@ const defineWebViewElement = (v8Util: NodeJS.V8UtilBinding, webViewImpl: typeof
 
     constructor () {
       super();
-      v8Util.setHiddenValue(this, 'internal', new WebViewImpl(this));
+      const internal = new WebViewImpl(this);
+      internal.dispatchEventInMainWorld = (eventName, props) => {
+        const event = new Event(eventName);
+        Object.assign(event, props);
+        return internal.webviewNode.dispatchEvent(event);
+      };
+      v8Util.setHiddenValue(this, 'internal', internal);
     }
 
     connectedCallback () {
@@ -49,7 +56,7 @@ const defineWebViewElement = (v8Util: NodeJS.V8UtilBinding, webViewImpl: typeof
       if (!internal.elementAttached) {
         guestViewInternal.registerEvents(internal, internal.viewInstanceId);
         internal.elementAttached = true;
-        internal.attributes[WEB_VIEW_CONSTANTS.ATTRIBUTE_SRC].parse();
+        (internal.attributes.get(WEB_VIEW_CONSTANTS.ATTRIBUTE_SRC) as SrcAttribute).parse();
       }
     }
 
diff --git a/lib/renderer/web-view/web-view-impl.ts b/lib/renderer/web-view/web-view-impl.ts
index ea26bcbc36677..0cac4986f79b3 100644
--- a/lib/renderer/web-view/web-view-impl.ts
+++ b/lib/renderer/web-view/web-view-impl.ts
@@ -5,6 +5,7 @@ import * as ipcRendererUtils from '@electron/internal/renderer/ipc-renderer-inte
 import * as guestViewInternal from '@electron/internal/renderer/web-view/guest-view-internal';
 import { WEB_VIEW_CONSTANTS } from '@electron/internal/renderer/web-view/web-view-constants';
 import { syncMethods, asyncMethods, properties } from '@electron/internal/common/web-view-methods';
+import type { WebViewAttribute, PartitionAttribute } from '@electron/internal/renderer/web-view/web-view-attributes';
 import { deserialize } from '@electron/internal/common/type-utils';
 const { webFrame } = electron;
 
@@ -33,14 +34,18 @@ export class WebViewImpl {
   public internalElement: HTMLIFrameElement
 
   // Replaced in web-view-attributes
-  public attributes: Record<string, any> = {}
+  public attributes = new Map<string, WebViewAttribute>();
   public setupWebViewAttributes (): void {}
 
+  public dispatchEventInMainWorld?: (eventName: string, props: any) => boolean;
+
   constructor (public webviewNode: HTMLElement) {
     // Create internal iframe element.
     this.internalElement = this.createInternalElement();
     const shadowRoot = this.webviewNode.attachShadow({ mode: 'open' });
-    shadowRoot.innerHTML = '<!DOCTYPE html><style type="text/css">:host { display: flex; }</style>';
+    const style = shadowRoot.ownerDocument!.createElement('style');
+    style.textContent = ':host { display: flex; }';
+    shadowRoot.appendChild(style);
     this.setupWebViewAttributes();
     this.viewInstanceId = getNextId();
     shadowRoot.appendChild(this.internalElement);
@@ -76,7 +81,7 @@ export class WebViewImpl {
     }
 
     this.beforeFirstNavigation = true;
-    this.attributes[WEB_VIEW_CONSTANTS.ATTRIBUTE_PARTITION].validPartitionId = true;
+    (this.attributes.get(WEB_VIEW_CONSTANTS.ATTRIBUTE_PARTITION) as PartitionAttribute).validPartitionId = true;
 
     // Since attachment swaps a local frame for a remote frame, we need our
     // internal iframe element to be local again before we can reattach.
@@ -95,19 +100,20 @@ export class WebViewImpl {
   // attribute, if necessary. See BrowserPlugin::UpdateDOMAttribute for more
   // details.
   handleWebviewAttributeMutation (attributeName: string, oldValue: any, newValue: any) {
-    if (!this.attributes[attributeName] || this.attributes[attributeName].ignoreMutation) {
+    if (!this.attributes.has(attributeName) || this.attributes.get(attributeName)!.ignoreMutation) {
       return;
     }
 
     // Let the changed attribute handle its own mutation
-    this.attributes[attributeName].handleMutation(oldValue, newValue);
+    this.attributes.get(attributeName)!.handleMutation(oldValue, newValue);
   }
 
   onElementResize () {
-    const resizeEvent = new Event('resize') as ElectronInternal.WebFrameResizeEvent;
-    resizeEvent.newWidth = this.webviewNode.clientWidth;
-    resizeEvent.newHeight = this.webviewNode.clientHeight;
-    this.dispatchEvent(resizeEvent);
+    const props = {
+      newWidth: this.webviewNode.clientWidth,
+      newHeight: this.webviewNode.clientHeight
+    };
+    this.dispatchEvent('resize', props);
   }
 
   createGuest () {
@@ -116,8 +122,8 @@ export class WebViewImpl {
     });
   }
 
-  dispatchEvent (webViewEvent: Electron.Event) {
-    this.webviewNode.dispatchEvent(webViewEvent);
+  dispatchEvent (eventName: string, props: Record<string, any> = {}) {
+    this.dispatchEventInMainWorld!(eventName, props);
   }
 
   // Adds an 'on<event>' property on the webview, which can be used to set/unset
@@ -142,28 +148,28 @@ export class WebViewImpl {
   }
 
   // Updates state upon loadcommit.
-  onLoadCommit (webViewEvent: ElectronInternal.WebViewEvent) {
+  onLoadCommit (props: Record<string, any>) {
     const oldValue = this.webviewNode.getAttribute(WEB_VIEW_CONSTANTS.ATTRIBUTE_SRC);
-    const newValue = webViewEvent.url;
-    if (webViewEvent.isMainFrame && (oldValue !== newValue)) {
+    const newValue = props.url;
+    if (props.isMainFrame && (oldValue !== newValue)) {
       // Touching the src attribute triggers a navigation. To avoid
       // triggering a page reload on every guest-initiated navigation,
       // we do not handle this mutation.
-      this.attributes[WEB_VIEW_CONSTANTS.ATTRIBUTE_SRC].setValueIgnoreMutation(newValue);
+      this.attributes.get(WEB_VIEW_CONSTANTS.ATTRIBUTE_SRC)!.setValueIgnoreMutation(newValue);
     }
   }
 
   // Emits focus/blur events.
   onFocusChange () {
-    const hasFocus = document.activeElement === this.webviewNode;
+    const hasFocus = this.webviewNode.ownerDocument!.activeElement === this.webviewNode;
     if (hasFocus !== this.hasFocus) {
       this.hasFocus = hasFocus;
-      this.dispatchEvent(new Event(hasFocus ? 'focus' : 'blur'));
+      this.dispatchEvent(hasFocus ? 'focus' : 'blur');
     }
   }
 
   onAttach (storagePartitionId: number) {
-    return this.attributes[WEB_VIEW_CONSTANTS.ATTRIBUTE_PARTITION].setValue(storagePartitionId);
+    return this.attributes.get(WEB_VIEW_CONSTANTS.ATTRIBUTE_PARTITION)!.setValue(storagePartitionId);
   }
 
   buildParams () {
@@ -172,10 +178,8 @@ export class WebViewImpl {
       userAgentOverride: this.userAgentOverride
     };
 
-    for (const attributeName in this.attributes) {
-      if (Object.prototype.hasOwnProperty.call(this.attributes, attributeName)) {
-        params[attributeName] = this.attributes[attributeName].getValue();
-      }
+    for (const [attributeName, attribute] of this.attributes) {
+      params[attributeName] = attribute.getValue();
     }
 
     return params;
diff --git a/lib/renderer/window-setup.ts b/lib/renderer/window-setup.ts
index 87b58409a2e36..1379324e303b6 100644
--- a/lib/renderer/window-setup.ts
+++ b/lib/renderer/window-setup.ts
@@ -181,7 +181,7 @@ class BrowserWindowProxy {
     this.guestId = guestId;
     this._location = new LocationProxy(guestId);
 
-    ipcRendererInternal.once(`ELECTRON_GUEST_WINDOW_MANAGER_WINDOW_CLOSED_${guestId}`, () => {
+    ipcRendererInternal.onceMessageFromMain(`ELECTRON_GUEST_WINDOW_MANAGER_WINDOW_CLOSED_${guestId}`, () => {
       removeProxy(guestId);
       this.closed = true;
     });
@@ -281,7 +281,7 @@ export const windowSetup = (
   if (contextIsolationEnabled) internalContextBridge.overrideGlobalValueFromIsolatedWorld(['prompt'], window.prompt);
 
   if (!usesNativeWindowOpen || openerId != null) {
-    ipcRendererInternal.on('ELECTRON_GUEST_WINDOW_POSTMESSAGE', function (
+    ipcRendererInternal.onMessageFromMain('ELECTRON_GUEST_WINDOW_POSTMESSAGE', function (
       _event, sourceId: number, message: any, sourceOrigin: string
     ) {
       // Manually dispatch event instead of using postMessage because we also need to
@@ -336,7 +336,7 @@ export const windowSetup = (
     let cachedVisibilityState = isHiddenPage ? 'hidden' : 'visible';
 
     // Subscribe to visibilityState changes.
-    ipcRendererInternal.on('ELECTRON_GUEST_INSTANCE_VISIBILITY_CHANGE', function (_event, visibilityState: VisibilityState) {
+    ipcRendererInternal.onMessageFromMain('ELECTRON_GUEST_INSTANCE_VISIBILITY_CHANGE', function (_event, visibilityState: VisibilityState) {
       if (cachedVisibilityState !== visibilityState) {
         cachedVisibilityState = visibilityState;
         document.dispatchEvent(new Event('visibilitychange'));
diff --git a/package.json b/package.json
index 56b7b629771a0..8752e7dc3bb41 100644
--- a/package.json
+++ b/package.json
@@ -1,11 +1,12 @@
 {
   "name": "electron",
-  "version": "10.1.0",
+  "version": "10.4.7",
   "repository": "https://github.com/electron/electron",
   "description": "Build cross platform desktop apps with JavaScript, HTML, and CSS",
   "devDependencies": {
-    "@electron/docs-parser": "^0.7.2",
+    "@electron/docs-parser": "^0.10.0",
     "@electron/typescript-definitions": "^8.7.2",
+    "@octokit/auth-app": "^2.10.0",
     "@octokit/rest": "^16.3.2",
     "@primer/octicons": "^9.1.1",
     "@types/basic-auth": "^1.1.3",
@@ -99,7 +100,6 @@
   ],
   "husky": {
     "hooks": {
-      "pre-commit": "lint-staged",
       "pre-push": "check-for-leaks"
     }
   },
diff --git a/patches/angle/.patches b/patches/angle/.patches
new file mode 100644
index 0000000000000..d02488bd9b539
--- /dev/null
+++ b/patches/angle/.patches
@@ -0,0 +1,2 @@
+cherry-pick-2882e1afd982.patch
+d3d11_skip_blits_if_there_is_no_intersection_of_dest_areas.patch
diff --git a/patches/angle/cherry-pick-2882e1afd982.patch b/patches/angle/cherry-pick-2882e1afd982.patch
new file mode 100644
index 0000000000000..dbe426a98e324
--- /dev/null
+++ b/patches/angle/cherry-pick-2882e1afd982.patch
@@ -0,0 +1,65 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jamie Madill <jmadill@chromium.org>
+Date: Tue, 20 Oct 2020 09:45:23 -0400
+Subject: Fix missing validation cache update on VAO binding.
+
+Bug: chromium:1139398
+Change-Id: I85a0d7a72bc2c97b07ebc5f86effd8e36aefd544
+Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2485581
+Reviewed-by: Geoff Lang <geofflang@chromium.org>
+Commit-Queue: Jamie Madill <jmadill@chromium.org>
+
+diff --git a/src/libANGLE/Context.cpp b/src/libANGLE/Context.cpp
+index c2d3868ff04af0813d496432c0f34b4f4a134fda..a6fa42c33a36a3e83f1bf959cbb566c6160e551e 100644
+--- a/src/libANGLE/Context.cpp
++++ b/src/libANGLE/Context.cpp
+@@ -8666,6 +8666,7 @@ void StateCache::onVertexArrayBindingChange(Context *context)
+     updateActiveAttribsMask(context);
+     updateVertexElementLimits(context);
+     updateBasicDrawStatesError();
++    updateBasicDrawElementsError();
+ }
+ 
+ void StateCache::onProgramExecutableChange(Context *context)
+diff --git a/src/libANGLE/Context.h b/src/libANGLE/Context.h
+index 10fa566d0040b2abe8d7193d668198bc2e461e38..8f33d1db627ccadb8f4bb8755bb43713365a6c6d 100644
+--- a/src/libANGLE/Context.h
++++ b/src/libANGLE/Context.h
+@@ -203,6 +203,7 @@ class StateCache final : angle::NonCopyable
+     // 2. onVertexArrayBufferStateChange.
+     // 3. onBufferBindingChange.
+     // 4. onVertexArrayStateChange.
++    // 5. onVertexArrayBindingStateChange.
+     intptr_t getBasicDrawElementsError(const Context *context) const
+     {
+         if (mCachedBasicDrawElementsError != kInvalidPointer)
+diff --git a/src/tests/gl_tests/StateChangeTest.cpp b/src/tests/gl_tests/StateChangeTest.cpp
+index 7356edc230e0f067e47023d952cb18f41b154ada..1c886e9c66caaf7508867bf06c94b8910d5fd736 100644
+--- a/src/tests/gl_tests/StateChangeTest.cpp
++++ b/src/tests/gl_tests/StateChangeTest.cpp
+@@ -5206,6 +5206,25 @@ TEST_P(RobustBufferAccessWebGL2ValidationStateChangeTest, BindZeroSizeBufferThen
+     ASSERT_GL_NO_ERROR();
+ }
+ 
++// Tests DrawElements with an empty buffer using a VAO.
++TEST_P(WebGL2ValidationStateChangeTest, DrawElementsEmptyVertexArray)
++{
++    ANGLE_GL_PROGRAM(program, essl1_shaders::vs::Simple(), essl1_shaders::fs::Red());
++
++    glUseProgram(program);
++
++    // Draw with empty buffer. Out of range but valid.
++    GLBuffer buffer;
++    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffer);
++    glDrawElements(GL_TRIANGLES, 0, GL_UNSIGNED_SHORT, reinterpret_cast<const GLvoid *>(0x1000));
++
++    // Switch VAO. No buffer bound, should be an error.
++    GLVertexArray vao;
++    glBindVertexArray(vao);
++    glDrawElements(GL_LINE_STRIP, 0x1000, GL_UNSIGNED_SHORT,
++                   reinterpret_cast<const GLvoid *>(0x1000));
++    EXPECT_GL_ERROR(GL_INVALID_OPERATION);
++}
+ }  // anonymous namespace
+ 
+ ANGLE_INSTANTIATE_TEST_ES2(StateChangeTest);
diff --git a/patches/angle/d3d11_skip_blits_if_there_is_no_intersection_of_dest_areas.patch b/patches/angle/d3d11_skip_blits_if_there_is_no_intersection_of_dest_areas.patch
new file mode 100644
index 0000000000000..7712badda757d
--- /dev/null
+++ b/patches/angle/d3d11_skip_blits_if_there_is_no_intersection_of_dest_areas.patch
@@ -0,0 +1,137 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Geoff Lang <geofflang@chromium.org>
+Date: Mon, 19 Apr 2021 12:47:05 -0400
+Subject: D3D11: Skip blits if there is no intersection of dest areas
+
+Blit11 would clip the destination rectangle with the destination size
+but ignore the result. gl::ClipRectangle returns false when the
+rectangles do not intersect at all, indicating the blit can be skipped.
+
+This could lead to an out-of-bounds write to the GPU memory for the
+destination texture.
+
+Mark ClipRectangle as nodiscard to prevent future issues.
+
+Bug: chromium:1199402
+Change-Id: I260e82d0917b8aa7e7887f2c9f7ed4b1a03ba785
+Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2836786
+Reviewed-by: Jamie Madill <jmadill@chromium.org>
+Commit-Queue: Geoff Lang <geofflang@chromium.org>
+(cherry picked from commit b574643ef28c92fcea5122dd7a72acb42a514eed)
+Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2846982
+Reviewed-by: Geoff Lang <geofflang@chromium.org>
+
+diff --git a/src/libANGLE/angletypes.h b/src/libANGLE/angletypes.h
+index e9e955b58f053a4a895c3c3fa105aac9db3c8baf..37740dda4be1aa59b57529841e0f13ee8a349af6 100644
+--- a/src/libANGLE/angletypes.h
++++ b/src/libANGLE/angletypes.h
+@@ -62,7 +62,7 @@ struct Rectangle
+ bool operator==(const Rectangle &a, const Rectangle &b);
+ bool operator!=(const Rectangle &a, const Rectangle &b);
+ 
+-bool ClipRectangle(const Rectangle &source, const Rectangle &clip, Rectangle *intersection);
++ANGLE_NO_DISCARD bool ClipRectangle(const Rectangle &source, const Rectangle &clip, Rectangle *intersection);
+ 
+ struct Offset
+ {
+diff --git a/src/libANGLE/renderer/d3d/d3d11/Blit11.cpp b/src/libANGLE/renderer/d3d/d3d11/Blit11.cpp
+index 55f8f8f4d38f30990d7061de6ebaa0595f0447da..6d9365af8db5fa9835127650162d5aeb6ce46b77 100644
+--- a/src/libANGLE/renderer/d3d/d3d11/Blit11.cpp
++++ b/src/libANGLE/renderer/d3d/d3d11/Blit11.cpp
+@@ -141,7 +141,10 @@ void StretchedBlitNearest(const gl::Box &sourceArea,
+                           uint8_t *destData)
+ {
+     gl::Rectangle clippedDestArea(destArea.x, destArea.y, destArea.width, destArea.height);
+-    gl::ClipRectangle(clippedDestArea, clipRect, &clippedDestArea);
++    if (!gl::ClipRectangle(clippedDestArea, clipRect, &clippedDestArea))
++    {
++        return;
++    }
+ 
+     // Determine if entire rows can be copied at once instead of each individual pixel. There
+     // must be no out of bounds lookups, whole rows copies, and no scale.
+diff --git a/src/libANGLE/renderer/gl/FramebufferGL.cpp b/src/libANGLE/renderer/gl/FramebufferGL.cpp
+index 2dd83c1f2d7c4be71bcc16a3c5d6f7f209a5b6b1..d709449547af9021ccf4ef2476e217af2f1517e5 100644
+--- a/src/libANGLE/renderer/gl/FramebufferGL.cpp
++++ b/src/libANGLE/renderer/gl/FramebufferGL.cpp
+@@ -1115,7 +1115,10 @@ angle::Result FramebufferGL::clipSrcRegion(const gl::Context *context,
+         // If pixels lying outside the read framebuffer, adjust src region
+         // and dst region to appropriate in-bounds regions respectively.
+         gl::Rectangle realSourceRegion;
+-        ClipRectangle(bounds.sourceRegion, bounds.sourceBounds, &realSourceRegion);
++        if (!ClipRectangle(bounds.sourceRegion, bounds.sourceBounds, &realSourceRegion))
++        {
++            return angle::Result::Stop;
++        }
+         GLuint xOffset = realSourceRegion.x - bounds.sourceRegion.x;
+         GLuint yOffset = realSourceRegion.y - bounds.sourceRegion.y;
+ 
+diff --git a/src/libANGLE/renderer/metal/ContextMtl.mm b/src/libANGLE/renderer/metal/ContextMtl.mm
+index d8d421f925675113a7d95250572e692fecb986ef..4bda9cf8518f24b8628ec4576e19ee7499131f10 100644
+--- a/src/libANGLE/renderer/metal/ContextMtl.mm
++++ b/src/libANGLE/renderer/metal/ContextMtl.mm
+@@ -1282,7 +1282,10 @@ void ContextMtl::updateScissor(const gl::State &glState)
+ 
+     // Clip the render area to the viewport.
+     gl::Rectangle viewportClippedRenderArea;
+-    gl::ClipRectangle(renderArea, glState.getViewport(), &viewportClippedRenderArea);
++    if (!gl::ClipRectangle(renderArea, glState.getViewport(), &viewportClippedRenderArea))
++    {
++        viewportClippedRenderArea = gl::Rectangle();
++    }
+ 
+     gl::Rectangle scissoredArea = ClipRectToScissor(getState(), viewportClippedRenderArea, false);
+     if (framebufferMtl->flipY())
+diff --git a/src/libANGLE/renderer/vulkan/ContextVk.cpp b/src/libANGLE/renderer/vulkan/ContextVk.cpp
+index 0276a4a8b579d36f239cd86527a6f8e08291d058..6092575364db4896caaf755eeaf93fb1d2fad9c4 100644
+--- a/src/libANGLE/renderer/vulkan/ContextVk.cpp
++++ b/src/libANGLE/renderer/vulkan/ContextVk.cpp
+@@ -2533,8 +2533,11 @@ angle::Result ContextVk::updateScissor(const gl::State &glState)
+ 
+     // Clip the render area to the viewport.
+     gl::Rectangle viewportClippedRenderArea;
+-    gl::ClipRectangle(renderArea, getCorrectedViewport(glState.getViewport()),
+-                      &viewportClippedRenderArea);
++    if (!gl::ClipRectangle(renderArea, getCorrectedViewport(glState.getViewport()),
++                           &viewportClippedRenderArea))
++    {
++        viewportClippedRenderArea = gl::Rectangle();
++    }
+ 
+     gl::Rectangle scissoredArea = ClipRectToScissor(getState(), viewportClippedRenderArea, false);
+     gl::Rectangle rotatedScissoredArea;
+diff --git a/src/tests/gl_tests/BlitFramebufferANGLETest.cpp b/src/tests/gl_tests/BlitFramebufferANGLETest.cpp
+index 79ba46aa10ae8c689b1546b3e1e99ce815f414bd..b38bebb31f17d9f1d127e170495fd810aba21390 100644
+--- a/src/tests/gl_tests/BlitFramebufferANGLETest.cpp
++++ b/src/tests/gl_tests/BlitFramebufferANGLETest.cpp
+@@ -1997,6 +1997,30 @@ TEST_P(BlitFramebufferTest, BlitFramebufferSizeOverflow2)
+     EXPECT_GL_ERROR(GL_INVALID_VALUE);
+ }
+ 
++// Test an edge case in D3D11 stencil blitting on the CPU that does not properly clip the
++// destination regions
++TEST_P(BlitFramebufferTest, BlitFramebufferStencilClipNoIntersection)
++{
++    GLFramebuffer framebuffers[2];
++    glBindFramebuffer(GL_READ_FRAMEBUFFER, framebuffers[0]);
++    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, framebuffers[1]);
++
++    GLRenderbuffer renderbuffers[2];
++    glBindRenderbuffer(GL_RENDERBUFFER, renderbuffers[0]);
++    glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, 4, 4);
++    glFramebufferRenderbuffer(GL_READ_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER,
++                              renderbuffers[0]);
++
++    glBindRenderbuffer(GL_RENDERBUFFER, renderbuffers[1]);
++    glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, 4, 4);
++    glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER,
++                              renderbuffers[1]);
++
++    glBlitFramebuffer(0, 0, 4, 4, 1 << 24, 1 << 24, 1 << 25, 1 << 25, GL_STENCIL_BUFFER_BIT,
++                      GL_NEAREST);
++    EXPECT_GL_NO_ERROR();
++}
++
+ // Use this to select which configurations (e.g. which renderer, which GLES major version) these
+ // tests should be run against.
+ ANGLE_INSTANTIATE_TEST(BlitFramebufferANGLETest,
diff --git a/patches/chromium/.patches b/patches/chromium/.patches
index 9b6293a9342ee..6da7ce572c8d8 100644
--- a/patches/chromium/.patches
+++ b/patches/chromium/.patches
@@ -74,7 +74,6 @@ add_trustedauthclient_to_urlloaderfactory.patch
 feat_allow_disabling_blink_scheduler_throttling_per_renderview.patch
 accessible_pane_view.patch
 fix_use_the_new_mediaplaypause_key_listener_for_internal_chrome.patch
-use_electron_resources_in_pdf_util.patch
 hack_plugin_response_interceptor_to_point_to_electron.patch
 fix_route_mouse_event_navigations_through_the_web_contents_delegate.patch
 feat_add_support_for_overriding_the_base_spellchecker_download_url.patch
@@ -94,10 +93,96 @@ fix_swap_global_proxies_before_initializing_the_windows_proxies.patch
 allow_setting_secondary_label_via_simplemenumodel.patch
 refactor_expose_cursor_changes_to_the_webcontentsobserver.patch
 disable_unnecessary_ischromefirstrun_check.patch
-use_electron_resources_in_icon_reader_service.patch
 fix_include_missing_header_file.patch
 cherrypick_future_chrome_commit_to_remove_superfluous_dcheck.patch
 worker_feat_add_hook_to_notify_script_ready.patch
 provide_axtextchangevaluestartmarker_for_macos_a11y_value_change.patch
 allow_focus_to_move_into_an_editable_combobox_s_listbox.patch
 reconnect_p2p_socket_dispatcher_if_network_service_dies.patch
+fix_properly_honor_printing_page_ranges.patch
+cherry-pick-8629cd7f8af3.patch
+avoid_use-after-free.patch
+don_t_create_providers_if_context_is_lost.patch
+fix_use_electron_generated_resources.patch
+chore_expose_v8_initialization_isolate_callbacks.patch
+cherry-pick-f440137cd96a.patch
+cherry-pick-30261f9de11e.patch
+cherry-pick-88f263f401b4.patch
+cherry-pick-229fdaf8fc05.patch
+cherry-pick-1ed869ad4bb3.patch
+cherry-pick-8f24f935c903.patch
+crashpad-initialize-logging.patch
+cherry-pick-bbb64b5c6916.patch
+ignore_renderframehostimpl_detach_for_speculative_rfhs.patch
+cherry-pick-eec5025668f8.patch
+cherry-pick-bbc6ab5bb49c.patch
+cherry-pick-3abc372c9c00.patch
+cherry-pick-d8d64b7cd244.patch
+cherry-pick-5ffbb7ed173a.patch
+ui_check_that_unpremultiply_is_passed_a_32bpp_image.patch
+cherry-pick-ecdec1fb0f42.patch
+merge_m86_ensure_that_buffers_used_by_imagedecoder_haven_t_been.patch
+cherry-pick-2d18de63acf1.patch
+only_zero_out_cross-origin_audio_that_doesn_t_get_played_out.patch
+fix_setparentacessibile_crash_win.patch
+backport_1142331.patch
+backport_1151865.patch
+cherry-pick-19aeffd4d93f.patch
+cherry-pick-4794770cf175.patch
+cherry-pick-79440c3a0675.patch
+cherry-pick-d866af575997.patch
+cherry-pick-da9b5ec032ad.patch
+cherry-pick-861253f1de98.patch
+cherry-pick-3ca3d70c7af5.patch
+mediacapabilities_use_threadsafe_static_wtf_string.patch
+cherry-pick-d74ba931c4b7.patch
+cherry-pick-9ec949913373.patch
+ots_backport_maxp_sanitization.patch
+ots_backport_of_glyf_guard_access_to_maxp_version_1_field.patch
+layoutng_fix_an_incorrect_cache-hit_for_line_boxes.patch
+cherry-pick-0d2bf89e15cc.patch
+cherry-pick-df438f22f7d2.patch
+cherry-pick-9afec1792cfc.patch
+cherry-pick-76cb1cc32baa.patch
+stop_using_raw_webcontents_ptr_in_dragdownloadfile.patch
+fix_heap_overflow_in_videoframeyuvconverter.patch
+disable_gpu_acceleration_on_all_mesa_software_rasterizers.patch
+websocket_don_t_clear_event_queue_on_destruction.patch
+cherry-pick-7e0e52df283c.patch
+cherry-pick-dea071d8b30f.patch
+cherry-pick-a4faa754a9ef.patch
+mediarecorder_tolerate_non-gmb_nv12_frames_for_h264.patch
+cherry-pick-6e8856624cbb.patch
+cherry-pick-b772b48067c4.patch
+cherry-pick-3910c9f5cde6.patch
+cherry-pick-5651fb858b75.patch
+cherry-pick-b3dc4c4b349d.patch
+cherry-pick-c6d6f7aee733.patch
+cherry-pick-37210e5ab006.patch
+reland_reland_fsa_add_issafepathcomponent_checks_to.patch
+css_make_fetches_from_inline_css_use_the_document_s_url_as_referrer.patch
+cherry-pick-3c80bb2a594f.patch
+cherry-pick-6a6361c9f31c.patch
+cherry-pick-012e9baf46c9.patch
+cherry-pick-8c3eb9d1c409.patch
+use_idtype_for_permission_change_subscriptions.patch
+cherry-pick-fe85e04a1797.patch
+m86-lts_add_null_pointer_check_in_renderwidgethostinputeventrouter.patch
+m86-lts_add_weak_pointer_to_rwhier_framesinkidownermap_and.patch
+cherry-pick-406ae3e8a9a8.patch
+cherry-pick-fe20b05a0e5e.patch
+cherry-pick-6b84dc72351b.patch
+cherry-pick-7dd3b1c86795.patch
+cherry-pick-1028ffc9bd83.patch
+cherry-pick-5745eaf16077.patch
+cherry-pick-02f5ef8c88d7.patch
+cherry-pick-668cf831e912.patch
+cherry-pick-f37149c4434f.patch
+replace_std_vector_with_base_observerlist_to_support_container.patch
+guard_webcontents_downloadimage_against_malformed_renderer.patch
+fileapi_terminate_filereaderloader_before_dispatching_onabort_event.patch
+notifications_crash_if_improper_action_icons_sent_from_renderer.patch
+reland_views_handle_deletion_when_toggling_fullscreen.patch
+media_feeds_disable_media_feeds_and_related_features.patch
+remove_tabs_and_line_breaks_from_the_middle_of_app_names_when.patch
+autofill_fixed_refill_of_changed_form.patch
diff --git a/patches/chromium/autofill_fixed_refill_of_changed_form.patch b/patches/chromium/autofill_fixed_refill_of_changed_form.patch
new file mode 100644
index 0000000000000..521b4d1ee0c8f
--- /dev/null
+++ b/patches/chromium/autofill_fixed_refill_of_changed_form.patch
@@ -0,0 +1,41 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Andrey Belenko <andrey.belenko@gmail.com>
+Date: Wed, 19 May 2021 17:24:48 +0200
+Subject: Fixed refill of changed form.
+
+(cherry picked from commit 533bb3adcfe3499f90e2646fc60312f303b963ac)
+
+Bug: 1203667
+Change-Id: I2693a024531775e0e60cc330107d77d10558f466
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2867655
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2874611
+
+diff --git a/components/autofill/core/browser/autofill_manager.cc b/components/autofill/core/browser/autofill_manager.cc
+index ded9c514894eee34a34eb562b08e7484673dfc4a..ca3b53835c2cacfeab893128a75e4d427d7993e8 100644
+--- a/components/autofill/core/browser/autofill_manager.cc
++++ b/components/autofill/core/browser/autofill_manager.cc
+@@ -1740,7 +1740,10 @@ void AutofillManager::FillOrPreviewDataModelForm(
+   form_structure->RationalizePhoneNumbersInSection(autofill_field->section);
+ 
+   FormData result = form;
+-  DCHECK_EQ(form_structure->field_count(), form.fields.size());
++  // TODO(crbug/1203667#c9): Skip if the form has changed in the meantime, which
++  // may happen with refills.
++  if (form_structure->field_count() != form.fields.size())
++    return;
+ 
+   if (action == AutofillDriver::FORM_DATA_ACTION_FILL && !is_refill) {
+     filling_contexts_map_[form_structure->GetIdentifierForRefill()] =
+@@ -1784,8 +1787,10 @@ void AutofillManager::FillOrPreviewDataModelForm(
+       continue;
+     }
+ 
+-    // The field order should be the same in |form_structure| and |result|.
+-    DCHECK(form_structure->field(i)->SameFieldAs(result.fields[i]));
++    // TODO(crbug/1203667#c9): Skip if the form has changed in the meantime,
++    // which may happen with refills.
++    if (!form_structure->field(i)->SameFieldAs(result.fields[i]))
++      continue;
+ 
+     AutofillField* cached_field = form_structure->field(i);
+     FieldTypeGroup field_group_type = cached_field->Type().group();
diff --git a/patches/chromium/avoid_use-after-free.patch b/patches/chromium/avoid_use-after-free.patch
new file mode 100644
index 0000000000000..ce9961095ab11
--- /dev/null
+++ b/patches/chromium/avoid_use-after-free.patch
@@ -0,0 +1,50 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Bruce Dawson <brucedawson@chromium.org>
+Date: Thu, 17 Sep 2020 22:34:58 +0000
+Subject: Avoid use-after-free
+
+SetNotWaitingForResponse can trigger a message pump which can then free
+the object which |this| points to. This use-after-free can be avoided by
+not dereferencing |this| after the call, by ensuring that calling
+SetNotWaitingForResponse is the last thing done.
+
+(cherry picked from commit e1c5c8442210bccfbc2475c9bc75a9cf99bb259e)
+
+Bug: 1125199
+Change-Id: Ie1289c93112151978e6daaa1d24326770028c529
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2407065
+Reviewed-by: Alex Moshchuk <alexmos@chromium.org>
+Commit-Queue: Bruce Dawson <brucedawson@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#806839}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2416264
+Reviewed-by: Bruce Dawson <brucedawson@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#816}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
+index 279875a1c109568ec8e658d51a55efdea998dd7d..a7c76413b86fac18f6f1f54c87e67218f094e6b2 100644
+--- a/content/browser/web_contents/web_contents_impl.cc
++++ b/content/browser/web_contents/web_contents_impl.cc
+@@ -3561,10 +3561,11 @@ void WebContentsImpl::SetNotWaitingForResponse() {
+     return;
+ 
+   waiting_for_response_ = false;
+-  if (delegate_)
+-    delegate_->LoadingStateChanged(this, is_load_to_different_document_);
+   for (auto& observer : observers_)
+     observer.DidReceiveResponse();
++
++  if (delegate_)
++    delegate_->LoadingStateChanged(this, is_load_to_different_document_);
+ }
+ 
+ void WebContentsImpl::SendScreenRects() {
+@@ -4533,6 +4534,8 @@ void WebContentsImpl::ReadyToCommitNavigation(
+             : false);
+   }
+ 
++  // LoadingStateChanged must be called last in case it triggers deletion of
++  // |this| due to recursive message pumps.
+   SetNotWaitingForResponse();
+ }
+ 
diff --git a/patches/chromium/backport_1142331.patch b/patches/chromium/backport_1142331.patch
new file mode 100644
index 0000000000000..1d9bdc3fa52c9
--- /dev/null
+++ b/patches/chromium/backport_1142331.patch
@@ -0,0 +1,141 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Andrey Belenko <anbelen@microsoft.com>
+Date: Thu, 10 Dec 2020 18:04:03 +0100
+Subject: Chromium backport: crbug.com/1142331
+
+M87-1
+Clipboard: Fix UaP in ClipboardWriter/FileReaderLoader
+https://chromium-review.googlesource.com/c/chromium/src/+/2536946
+CVE-2020-16037
+
+diff --git a/third_party/blink/renderer/modules/clipboard/clipboard_promise.cc b/third_party/blink/renderer/modules/clipboard/clipboard_promise.cc
+index fc5f32d86fd2cc4aeeaadddc94da6ce5e8e7990a..9c72fb55426f685045418947427406016d947589 100644
+--- a/third_party/blink/renderer/modules/clipboard/clipboard_promise.cc
++++ b/third_party/blink/renderer/modules/clipboard/clipboard_promise.cc
+@@ -104,7 +104,7 @@ ScriptPromise ClipboardPromise::CreateForWriteText(ExecutionContext* context,
+ 
+ ClipboardPromise::ClipboardPromise(ExecutionContext* context,
+                                    ScriptState* script_state)
+-    : ExecutionContextClient(context),
++    : ExecutionContextLifecycleObserver(context),
+       script_state_(script_state),
+       script_promise_resolver_(
+           MakeGarbageCollected<ScriptPromiseResolver>(script_state)),
+@@ -483,13 +483,20 @@ scoped_refptr<base::SingleThreadTaskRunner> ClipboardPromise::GetTaskRunner() {
+   return GetExecutionContext()->GetTaskRunner(TaskType::kUserInteraction);
+ }
+ 
++// ExecutionContextLifecycleObserver implementation.
++void ClipboardPromise::ContextDestroyed() {
++  script_promise_resolver_->Reject(MakeGarbageCollected<DOMException>(
++      DOMExceptionCode::kNotAllowedError, "Document detached."));
++  clipboard_writer_.Clear();
++}
++
+ void ClipboardPromise::Trace(Visitor* visitor) const {
+   visitor->Trace(script_state_);
+   visitor->Trace(script_promise_resolver_);
+   visitor->Trace(clipboard_writer_);
+   visitor->Trace(permission_service_);
+   visitor->Trace(clipboard_item_data_);
+-  ExecutionContextClient::Trace(visitor);
++  ExecutionContextLifecycleObserver::Trace(visitor);
+ }
+ 
+ }  // namespace blink
+diff --git a/third_party/blink/renderer/modules/clipboard/clipboard_promise.h b/third_party/blink/renderer/modules/clipboard/clipboard_promise.h
+index 18efbc8c632dd7061fb31437529f1b14a25beb3a..307ce3b51a7c75b60301885685f5c0d780997250 100644
+--- a/third_party/blink/renderer/modules/clipboard/clipboard_promise.h
++++ b/third_party/blink/renderer/modules/clipboard/clipboard_promise.h
+@@ -26,7 +26,7 @@ class ExecutionContext;
+ class ClipboardItemOptions;
+ 
+ class ClipboardPromise final : public GarbageCollected<ClipboardPromise>,
+-                               public ExecutionContextClient {
++                               public ExecutionContextLifecycleObserver {
+   USING_GARBAGE_COLLECTED_MIXIN(ClipboardPromise);
+ 
+  public:
+@@ -83,6 +83,9 @@ class ClipboardPromise final : public GarbageCollected<ClipboardPromise>,
+   LocalFrame* GetLocalFrame() const;
+   scoped_refptr<base::SingleThreadTaskRunner> GetTaskRunner();
+ 
++  // ExecutionContextLifecycleObserver
++  void ContextDestroyed() override;
++
+   Member<ScriptState> script_state_;
+   Member<ScriptPromiseResolver> script_promise_resolver_;
+ 
+diff --git a/third_party/blink/renderer/modules/clipboard/clipboard_writer.cc b/third_party/blink/renderer/modules/clipboard/clipboard_writer.cc
+index 2891db58d47b30575efd782ae1c7cf8ee7558cc4..4b224c9679ca51c01328479685970235f35a32fd 100644
+--- a/third_party/blink/renderer/modules/clipboard/clipboard_writer.cc
++++ b/third_party/blink/renderer/modules/clipboard/clipboard_writer.cc
+@@ -188,9 +188,12 @@ ClipboardWriter::ClipboardWriter(SystemClipboard* system_clipboard,
+       file_reading_task_runner_(promise->GetExecutionContext()->GetTaskRunner(
+           TaskType::kFileReading)),
+       system_clipboard_(system_clipboard),
+-      raw_system_clipboard_(raw_system_clipboard) {}
++      raw_system_clipboard_(raw_system_clipboard),
++      self_keep_alive_(PERSISTENT_FROM_HERE, this) {}
+ 
+-ClipboardWriter::~ClipboardWriter() = default;
++ClipboardWriter::~ClipboardWriter() {
++  DCHECK(!file_reader_);
++}
+ 
+ // static
+ bool ClipboardWriter::IsValidType(const String& type, bool is_raw) {
+@@ -220,7 +223,9 @@ void ClipboardWriter::DidFinishLoading() {
+   DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
+   DOMArrayBuffer* array_buffer = file_reader_->ArrayBufferResult();
+   DCHECK(array_buffer);
++
+   file_reader_.reset();
++  self_keep_alive_.Clear();
+ 
+   worker_pool::PostTask(
+       FROM_HERE, CrossThreadBindOnce(&ClipboardWriter::DecodeOnBackgroundThread,
+@@ -230,6 +235,8 @@ void ClipboardWriter::DidFinishLoading() {
+ }
+ 
+ void ClipboardWriter::DidFail(FileErrorCode error_code) {
++  file_reader_.reset();
++  self_keep_alive_.Clear();
+   promise_->RejectFromReadOrDecodeFailure();
+ }
+ 
+diff --git a/third_party/blink/renderer/modules/clipboard/clipboard_writer.h b/third_party/blink/renderer/modules/clipboard/clipboard_writer.h
+index 527b063cd20900653dc37027bef8d24af31fb6de..3de3f5ad34b8ebf378421c64c917e3091e5343c6 100644
+--- a/third_party/blink/renderer/modules/clipboard/clipboard_writer.h
++++ b/third_party/blink/renderer/modules/clipboard/clipboard_writer.h
+@@ -9,6 +9,7 @@
+ #include "third_party/blink/renderer/core/fileapi/blob.h"
+ #include "third_party/blink/renderer/core/fileapi/file_reader_loader_client.h"
+ #include "third_party/blink/renderer/platform/heap/heap.h"
++#include "third_party/blink/renderer/platform/heap/self_keep_alive.h"
+ #include "third_party/skia/include/core/SkImage.h"
+ 
+ namespace blink {
+@@ -27,6 +28,11 @@ class RawSystemClipboard;
+ //     take advantage of vulnerabilities in their decoders. In
+ //     ClipboardRawDataWriter, this decoding is skipped.
+ // (3) Writing the blob's decoded contents to the system clipboard.
++//
++// ClipboardWriter is owned only by itself and ClipboardPromise. It keeps
++// itself alive for the duration of FileReaderLoader's async operations using
++// SelfKeepAlive, and keeps itself alive afterwards during cross-thread
++// operations by using WrapCrossThreadPersistent.
+ class ClipboardWriter : public GarbageCollected<ClipboardWriter>,
+                         public FileReaderLoaderClient {
+  public:
+@@ -80,6 +86,10 @@ class ClipboardWriter : public GarbageCollected<ClipboardWriter>,
+   Member<SystemClipboard> system_clipboard_;
+   // Access to the global unsanitized system clipboard.
+   Member<RawSystemClipboard> raw_system_clipboard_;
++
++  // Oilpan: ClipboardWriter must remain alive until Member<T>::Clear() is
++  // called, to keep the FileReaderLoader alive and avoid unexpected UaPs.
++  SelfKeepAlive<ClipboardWriter> self_keep_alive_;
+ };
+ 
+ }  // namespace blink
diff --git a/patches/chromium/backport_1151865.patch b/patches/chromium/backport_1151865.patch
new file mode 100644
index 0000000000000..fac6e8a6765a7
--- /dev/null
+++ b/patches/chromium/backport_1151865.patch
@@ -0,0 +1,23 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Andrey Belenko <anbelen@microsoft.com>
+Date: Thu, 10 Dec 2020 22:16:48 +0100
+Subject: Chromium backport: crbug.com/1151865
+
+M87-1
+Reject mojom::DataElement serialization if array size read failed
+https://chromium-review.googlesource.com/c/chromium/src/+/2567130
+CVE-2020-16041
+
+diff --git a/services/network/public/cpp/url_request_mojom_traits.cc b/services/network/public/cpp/url_request_mojom_traits.cc
+index ce1478f6df691d5b1f7862a45ac3989a43e2d814..881bcb23ab3291e61088458f46c446fe9e7fb7cf 100644
+--- a/services/network/public/cpp/url_request_mojom_traits.cc
++++ b/services/network/public/cpp/url_request_mojom_traits.cc
+@@ -286,6 +286,8 @@ bool StructTraits<network::mojom::DataElementDataView, network::DataElement>::
+   if (data.type() == network::mojom::DataElementType::kBytes) {
+     if (!data.ReadBuf(&out->buf_))
+       return false;
++    if (data.length() != out->buf_.size())
++      return false;
+   }
+   out->type_ = data.type();
+   out->data_pipe_getter_ = data.TakeDataPipeGetter<
diff --git a/patches/chromium/can_create_window.patch b/patches/chromium/can_create_window.patch
index 8f8b084f53331..607cc4da7e43b 100644
--- a/patches/chromium/can_create_window.patch
+++ b/patches/chromium/can_create_window.patch
@@ -9,10 +9,10 @@ potentially prevent a window from being created.
 TODO(loc): this patch is currently broken.
 
 diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
-index 0e54861c260ecfa1635ee56c1c9e931914afe901..948e3e5cf64f74ae560c64d0490c22a810d0d96f 100644
+index 54cc513534148a250993969a73b503bc3dd7a524..c1d7a3052516c6c8ac5a8e65c9688d04b8edec70 100644
 --- a/content/browser/frame_host/render_frame_host_impl.cc
 +++ b/content/browser/frame_host/render_frame_host_impl.cc
-@@ -4823,6 +4823,7 @@ void RenderFrameHostImpl::CreateNewWindow(
+@@ -4816,6 +4816,7 @@ void RenderFrameHostImpl::CreateNewWindow(
            last_committed_origin_, params->window_container_type,
            params->target_url, params->referrer.To<Referrer>(),
            params->frame_name, params->disposition, *params->features,
diff --git a/patches/chromium/cherry-pick-012e9baf46c9.patch b/patches/chromium/cherry-pick-012e9baf46c9.patch
new file mode 100644
index 0000000000000..f2021d4766405
--- /dev/null
+++ b/patches/chromium/cherry-pick-012e9baf46c9.patch
@@ -0,0 +1,86 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jana Grill <janagrill@google.com>
+Date: Thu, 15 Apr 2021 20:49:42 +0000
+Subject: Mojo: Remove some inappropriate DCHECKs
+
+There are a few places where we DCHECK conditions that cannot be
+reliably asserted since they depend on untrusted inputs. These are
+replaced with logic to conditionally terminate the connection to the
+offending peer process.
+
+(cherry picked from commit a32b061fc92cc3864d036ffb8c22c12b05202589)
+
+Fixed: 1195333
+Change-Id: I0c6873bf55d6b0b1d0cbb3c2e5b256e1a57ff696
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2808893
+Reviewed-by: Robert Sesek <rsesek@chromium.org>
+Commit-Queue: Ken Rockot <rockot@google.com>
+Cr-Original-Commit-Position: refs/heads/master@{#870007}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2821958
+Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Commit-Queue: Achuith Bhandarkar <achuith@chromium.org>
+Owners-Override: Achuith Bhandarkar <achuith@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1608}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/mojo/core/node_controller.cc b/mojo/core/node_controller.cc
+index c7646fa4dc5c5062e8a8a620e55839301af51bed..c333ed64f71f0dfe5d0012b07bcedccfd94cd5e9 100644
+--- a/mojo/core/node_controller.cc
++++ b/mojo/core/node_controller.cc
+@@ -942,7 +942,11 @@ void NodeController::OnBrokerClientAdded(const ports::NodeName& from_node,
+ void NodeController::OnAcceptBrokerClient(const ports::NodeName& from_node,
+                                           const ports::NodeName& broker_name,
+                                           PlatformHandle broker_channel) {
+-  DCHECK(!GetConfiguration().is_broker_process);
++  if (GetConfiguration().is_broker_process) {
++    // The broker should never receive this message from anyone.
++    DropPeer(from_node, nullptr);
++    return;
++  }
+ 
+   // This node should already have an inviter in bootstrap mode.
+   ports::NodeName inviter_name;
+@@ -953,8 +957,13 @@ void NodeController::OnAcceptBrokerClient(const ports::NodeName& from_node,
+     inviter = bootstrap_inviter_channel_;
+     bootstrap_inviter_channel_ = nullptr;
+   }
+-  DCHECK(inviter_name == from_node);
+-  DCHECK(inviter);
++
++  if (inviter_name != from_node || !inviter ||
++      broker_name == ports::kInvalidNodeName) {
++    // We are not expecting this message. Assume the source is hostile.
++    DropPeer(from_node, nullptr);
++    return;
++  }
+ 
+   base::queue<ports::NodeName> pending_broker_clients;
+   std::unordered_map<ports::NodeName, OutgoingMessageQueue>
+@@ -965,22 +974,22 @@ void NodeController::OnAcceptBrokerClient(const ports::NodeName& from_node,
+     std::swap(pending_broker_clients, pending_broker_clients_);
+     std::swap(pending_relay_messages, pending_relay_messages_);
+   }
+-  DCHECK(broker_name != ports::kInvalidNodeName);
+ 
+   // It's now possible to add both the broker and the inviter as peers.
+   // Note that the broker and inviter may be the same node.
+   scoped_refptr<NodeChannel> broker;
+   if (broker_name == inviter_name) {
+-    DCHECK(!broker_channel.is_valid());
+     broker = inviter;
+-  } else {
+-    DCHECK(broker_channel.is_valid());
++  } else if (broker_channel.is_valid()) {
+     broker = NodeChannel::Create(
+         this,
+         ConnectionParams(PlatformChannelEndpoint(std::move(broker_channel))),
+         Channel::HandlePolicy::kAcceptHandles, io_task_runner_,
+         ProcessErrorCallback());
+     AddPeer(broker_name, broker, true /* start_channel */);
++  } else {
++    DropPeer(from_node, nullptr);
++    return;
+   }
+ 
+   AddPeer(inviter_name, inviter, false /* start_channel */);
diff --git a/patches/chromium/cherry-pick-02f5ef8c88d7.patch b/patches/chromium/cherry-pick-02f5ef8c88d7.patch
new file mode 100644
index 0000000000000..535b1c6519186
--- /dev/null
+++ b/patches/chromium/cherry-pick-02f5ef8c88d7.patch
@@ -0,0 +1,106 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Josh Karlin <jkarlin@chromium.org>
+Date: Wed, 14 Apr 2021 09:21:00 +0000
+Subject: Fix removal of observers in NetworkStateNotifier
+
+The NetworkStateNotifier has a per-thread list of observer pointers. If
+one is deleted mid-iteration, what we do is replace the pointer in the
+list with a 0, and add the index to the zeroed list of observers to
+remove after iteration completes. Well, the removal step was broken
+for cases where there were multiple elements to remove. It didn't adjust
+for the fact that the indexes shifted after each removal.
+
+(cherry picked from commit 5d34987de6cffb8d747c5ed16e82614e9146cc0a)
+
+Bug: 1170148
+Change-Id: I446acaae5f8a805a58142848634a0ee8c5f90882
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2727306
+Reviewed-by: Kentaro Hara <haraken@chromium.org>
+Commit-Queue: Josh Karlin <jkarlin@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#858853}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2821797
+Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Commit-Queue: Jana Grill <janagrill@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1602}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/third_party/blink/renderer/platform/network/network_state_notifier.cc b/third_party/blink/renderer/platform/network/network_state_notifier.cc
+index dbc9d03a813c5ed50b033ce135851311a731c02a..f9bfbe1c520fe8f293f5ffbd948052c6a8c5d6b7 100644
+--- a/third_party/blink/renderer/platform/network/network_state_notifier.cc
++++ b/third_party/blink/renderer/platform/network/network_state_notifier.cc
+@@ -394,8 +394,14 @@ void NetworkStateNotifier::CollectZeroedObservers(
+ 
+   // If any observers were removed during the iteration they will have
+   // 0 values, clean them up.
+-  for (wtf_size_t i = 0; i < list->zeroed_observers.size(); ++i)
+-    list->observers.EraseAt(list->zeroed_observers[i]);
++  std::sort(list->zeroed_observers.begin(), list->zeroed_observers.end());
++  int removed = 0;
++  for (wtf_size_t i = 0; i < list->zeroed_observers.size(); ++i) {
++    int index_to_remove = list->zeroed_observers[i] - removed;
++    DCHECK_EQ(nullptr, list->observers[index_to_remove]);
++    list->observers.EraseAt(index_to_remove);
++    removed += 1;
++  }
+ 
+   list->zeroed_observers.clear();
+ 
+diff --git a/third_party/blink/renderer/platform/network/network_state_notifier_test.cc b/third_party/blink/renderer/platform/network/network_state_notifier_test.cc
+index eb2bd791529df4339ebd8159700769fcd06d795f..f7c359235a87adc231c00eb252dc24a7d95065f8 100644
+--- a/third_party/blink/renderer/platform/network/network_state_notifier_test.cc
++++ b/third_party/blink/renderer/platform/network/network_state_notifier_test.cc
+@@ -528,6 +528,53 @@ TEST_F(NetworkStateNotifierTest, RemoveFutureObserverWhileNotifying) {
+       kUnknownThroughputMbps, SaveData::kOff));
+ }
+ 
++// It should be safe to remove multiple observers in one iteration.
++TEST_F(NetworkStateNotifierTest, RemoveMultipleObserversWhileNotifying) {
++  StateObserver observer1, observer2, observer3;
++  std::unique_ptr<NetworkStateNotifier::NetworkStateObserverHandle> handle1 =
++      notifier_.AddConnectionObserver(&observer1, GetTaskRunner());
++  std::unique_ptr<NetworkStateNotifier::NetworkStateObserverHandle> handle2 =
++      notifier_.AddConnectionObserver(&observer2, GetTaskRunner());
++  std::unique_ptr<NetworkStateNotifier::NetworkStateObserverHandle> handle3 =
++      notifier_.AddConnectionObserver(&observer3, GetTaskRunner());
++  observer1.RemoveObserverOnNotification(std::move(handle1));
++  observer3.RemoveObserverOnNotification(std::move(handle3));
++
++  // Running the first time should delete observers 1 and 3.
++  SetConnection(kWebConnectionTypeBluetooth, kBluetoothMaxBandwidthMbps,
++                WebEffectiveConnectionType::kTypeUnknown, kUnknownRtt,
++                kUnknownRtt, kUnknownThroughputMbps, SaveData::kOff);
++  EXPECT_TRUE(VerifyObservations(
++      observer1, kWebConnectionTypeBluetooth, kBluetoothMaxBandwidthMbps,
++      WebEffectiveConnectionType::kTypeUnknown, kUnknownRtt, kUnknownRtt,
++      kUnknownThroughputMbps, SaveData::kOff));
++  EXPECT_TRUE(VerifyObservations(
++      observer2, kWebConnectionTypeBluetooth, kBluetoothMaxBandwidthMbps,
++      WebEffectiveConnectionType::kTypeUnknown, kUnknownRtt, kUnknownRtt,
++      kUnknownThroughputMbps, SaveData::kOff));
++  EXPECT_TRUE(VerifyObservations(
++      observer3, kWebConnectionTypeBluetooth, kBluetoothMaxBandwidthMbps,
++      WebEffectiveConnectionType::kTypeUnknown, kUnknownRtt, kUnknownRtt,
++      kUnknownThroughputMbps, SaveData::kOff));
++
++  // Run again and only observer 2 should have been updated.
++  SetConnection(kWebConnectionTypeEthernet, kEthernetMaxBandwidthMbps,
++                WebEffectiveConnectionType::kTypeUnknown, kUnknownRtt,
++                kUnknownRtt, kUnknownThroughputMbps, SaveData::kOff);
++  EXPECT_TRUE(VerifyObservations(
++      observer1, kWebConnectionTypeBluetooth, kBluetoothMaxBandwidthMbps,
++      WebEffectiveConnectionType::kTypeUnknown, kUnknownRtt, kUnknownRtt,
++      kUnknownThroughputMbps, SaveData::kOff));
++  EXPECT_TRUE(VerifyObservations(
++      observer2, kWebConnectionTypeEthernet, kEthernetMaxBandwidthMbps,
++      WebEffectiveConnectionType::kTypeUnknown, kUnknownRtt, kUnknownRtt,
++      kUnknownThroughputMbps, SaveData::kOff));
++  EXPECT_TRUE(VerifyObservations(
++      observer3, kWebConnectionTypeBluetooth, kBluetoothMaxBandwidthMbps,
++      WebEffectiveConnectionType::kTypeUnknown, kUnknownRtt, kUnknownRtt,
++      kUnknownThroughputMbps, SaveData::kOff));
++}
++
+ TEST_F(NetworkStateNotifierTest, MultipleContextsAddObserver) {
+   StateObserver observer1, observer2;
+   std::unique_ptr<NetworkStateNotifier::NetworkStateObserverHandle> handle1 =
diff --git a/patches/chromium/cherry-pick-0d2bf89e15cc.patch b/patches/chromium/cherry-pick-0d2bf89e15cc.patch
new file mode 100644
index 0000000000000..51faff386338d
--- /dev/null
+++ b/patches/chromium/cherry-pick-0d2bf89e15cc.patch
@@ -0,0 +1,148 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Sam McNally <sammc@chromium.org>
+Date: Thu, 17 Dec 2020 02:58:09 +0000
+Subject: Observe ProcessManager shutdowns from KeepAliveImpl.
+
+ExtensionRegistry uses the underlying BrowserContext for incognito
+contexts. Thus, for incognito uses, the ProcessManager can be destroyed
+without the KeepAliveImpl being notified. Observe ProcessManager
+shutdowns directly to ensure KeepAliveImpls are cleaned up when a
+ProcessManager is shut down.
+
+[Substituted ScopedObserver for base::ScopedObservation since the latter
+ was introduced in 88]
+
+(cherry picked from commit 5a55fe16e633dd02e3c40e513acabf4324bb6318)
+
+(cherry picked from commit c2bf2463fbeff3959ea1998a4f3ae82dd648b56c)
+
+Bug: 1149177
+Change-Id: I39a0cf54bcf8cf0d58e36560935b8d2f79399cd2
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2548585
+Auto-Submit: Sam McNally <sammc@chromium.org>
+Commit-Queue: Ben Wells <benwells@chromium.org>
+Reviewed-by: Ben Wells <benwells@chromium.org>
+Cr-Original-Original-Commit-Position: refs/heads/master@{#830107}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2563379
+Reviewed-by: Sam McNally <sammc@chromium.org>
+Commit-Queue: Sam McNally <sammc@chromium.org>
+Cr-Original-Commit-Position: refs/branch-heads/4280@{#1653}
+Cr-Original-Branched-From: ea420fb963f9658c9969b6513c56b8f47efa1a2a-refs/heads/master@{#812852}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2587154
+Commit-Queue: Achuith Bhandarkar <achuith@chromium.org>
+Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1496}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/extensions/browser/mojo/keep_alive_impl.cc b/extensions/browser/mojo/keep_alive_impl.cc
+index 0cc74657805296772e00d98225f8113b69904ac5..a7344015d62c4d84eeeddcf9da6f5d38db7e802c 100644
+--- a/extensions/browser/mojo/keep_alive_impl.cc
++++ b/extensions/browser/mojo/keep_alive_impl.cc
+@@ -8,7 +8,6 @@
+ 
+ #include "base/bind.h"
+ #include "content/public/browser/browser_context.h"
+-#include "extensions/browser/process_manager.h"
+ 
+ namespace extensions {
+ 
+@@ -32,6 +31,7 @@ KeepAliveImpl::KeepAliveImpl(content::BrowserContext* context,
+   receiver_.set_disconnect_handler(
+       base::BindOnce(&KeepAliveImpl::OnDisconnected, base::Unretained(this)));
+   extension_registry_observer_.Add(ExtensionRegistry::Get(context_));
++  process_manager_observation_.Add(ProcessManager::Get(context_));
+ }
+ 
+ KeepAliveImpl::~KeepAliveImpl() = default;
+@@ -54,4 +54,8 @@ void KeepAliveImpl::OnDisconnected() {
+   delete this;
+ }
+ 
++void KeepAliveImpl::OnProcessManagerShutdown(ProcessManager* manager) {
++  delete this;
++}
++
+ }  // namespace extensions
+diff --git a/extensions/browser/mojo/keep_alive_impl.h b/extensions/browser/mojo/keep_alive_impl.h
+index a3e4233a3e6691999decb281dbaf80f74bf922cc..331fc2fdf670e44d51adc610ee39144dac15ae87 100644
+--- a/extensions/browser/mojo/keep_alive_impl.h
++++ b/extensions/browser/mojo/keep_alive_impl.h
+@@ -10,6 +10,8 @@
+ #include "base/scoped_observer.h"
+ #include "extensions/browser/extension_registry.h"
+ #include "extensions/browser/extension_registry_observer.h"
++#include "extensions/browser/process_manager.h"
++#include "extensions/browser/process_manager_observer.h"
+ #include "extensions/common/mojom/keep_alive.mojom.h"
+ #include "mojo/public/cpp/bindings/pending_receiver.h"
+ #include "mojo/public/cpp/bindings/receiver.h"
+@@ -21,10 +23,13 @@ class RenderFrameHost;
+ 
+ namespace extensions {
+ class Extension;
++class ProcessManager;
+ 
+ // An RAII mojo service implementation for extension keep alives. This adds a
+ // keep alive on construction and removes it on destruction.
+-class KeepAliveImpl : public KeepAlive, public ExtensionRegistryObserver {
++class KeepAliveImpl : public KeepAlive,
++                      public ExtensionRegistryObserver,
++                      public ProcessManagerObserver {
+  public:
+   // Create a keep alive for |extension| running in |context| and connect it to
+   // |receiver|. When the receiver closes its pipe, the keep alive ends.
+@@ -45,6 +50,9 @@ class KeepAliveImpl : public KeepAlive, public ExtensionRegistryObserver {
+                            UnloadedExtensionReason reason) override;
+   void OnShutdown(ExtensionRegistry* registry) override;
+ 
++  // ProcessManagerObserver overrides.
++  void OnProcessManagerShutdown(ProcessManager* manager) override;
++
+   // Invoked when the mojo connection is disconnected.
+   void OnDisconnected();
+ 
+@@ -52,6 +60,8 @@ class KeepAliveImpl : public KeepAlive, public ExtensionRegistryObserver {
+   const Extension* extension_;
+   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
+       extension_registry_observer_{this};
++  ScopedObserver<ProcessManager, ProcessManagerObserver>
++      process_manager_observation_{this};
+   mojo::Receiver<KeepAlive> receiver_;
+ 
+   DISALLOW_COPY_AND_ASSIGN(KeepAliveImpl);
+diff --git a/extensions/browser/mojo/keep_alive_impl_unittest.cc b/extensions/browser/mojo/keep_alive_impl_unittest.cc
+index 90599cc46d24dc7ec0eabb1da17545b489d93445..e6f60c39cf29d9554cb0f1096ed87345d3e38923 100644
+--- a/extensions/browser/mojo/keep_alive_impl_unittest.cc
++++ b/extensions/browser/mojo/keep_alive_impl_unittest.cc
+@@ -160,7 +160,7 @@ TEST_F(KeepAliveTest, UnloadExtension) {
+   run_loop.Run();
+ }
+ 
+-TEST_F(KeepAliveTest, Shutdown) {
++TEST_F(KeepAliveTest, ShutdownExtensionRegistry) {
+   mojo::Remote<KeepAlive> keep_alive;
+   CreateKeepAlive(keep_alive.BindNewPipeAndPassReceiver());
+   EXPECT_EQ(1, GetKeepAliveCount());
+@@ -178,4 +178,22 @@ TEST_F(KeepAliveTest, Shutdown) {
+   run_loop.Run();
+ }
+ 
++TEST_F(KeepAliveTest, ShutdownProcessManager) {
++  mojo::Remote<KeepAlive> keep_alive;
++  CreateKeepAlive(keep_alive.BindNewPipeAndPassReceiver());
++  EXPECT_EQ(1, GetKeepAliveCount());
++  EXPECT_EQ(1u, GetActivities().count(mojo_activity_));
++
++  ProcessManager::Get(browser_context())->Shutdown();
++  // After a shutdown event, the KeepAliveImpl should not access its
++  // ProcessManager and so the keep-alive count should remain unchanged.
++  EXPECT_EQ(1, GetKeepAliveCount());
++  EXPECT_EQ(1u, GetActivities().count(mojo_activity_));
++
++  // Wait for |keep_alive| to disconnect.
++  base::RunLoop run_loop;
++  keep_alive.set_disconnect_handler(run_loop.QuitClosure());
++  run_loop.Run();
++}
++
+ }  // namespace extensions
diff --git a/patches/chromium/cherry-pick-1028ffc9bd83.patch b/patches/chromium/cherry-pick-1028ffc9bd83.patch
new file mode 100644
index 0000000000000..f623de049a423
--- /dev/null
+++ b/patches/chromium/cherry-pick-1028ffc9bd83.patch
@@ -0,0 +1,57 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Bill Budge <bbudge@chromium.org>
+Date: Tue, 20 Apr 2021 15:22:33 +0000
+Subject: M86-LTS: [GeneratedCodeCache] Copy large data before hashing and
+ writing
+
+- Makes a copy before hashing and writing large code entries.
+
+(cherry picked from commit cea0cb8eee9900308d9b43661e9faca449086940)
+
+Bug: chromium:1194046
+Change-Id: Id5a6e6d3a04c83cfed2f18db53587d654d642fc0
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2807255
+Reviewed-by: Nasko Oskov <nasko@chromium.org>
+Reviewed-by: Mythri Alle <mythria@chromium.org>
+Commit-Queue: Bill Budge <bbudge@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#870064}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2838077
+Reviewed-by: Bill Budge <bbudge@chromium.org>
+Commit-Queue: Achuith Bhandarkar <achuith@chromium.org>
+Owners-Override: Achuith Bhandarkar <achuith@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1612}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/content/browser/code_cache/generated_code_cache.cc b/content/browser/code_cache/generated_code_cache.cc
+index dd5c28f92503ce95082b9b6b6254f6922e5b81ac..4b71cde691a7a89344a556396780ce71cf7aebf7 100644
+--- a/content/browser/code_cache/generated_code_cache.cc
++++ b/content/browser/code_cache/generated_code_cache.cc
+@@ -382,9 +382,18 @@ void GeneratedCodeCache::WriteEntry(const GURL& url,
+     // [stream1] <empty>
+     // [stream0 (checksum key entry)] <empty>
+     // [stream1 (checksum key entry)] data
++
++    // Make a copy of the data before hashing. A compromised renderer could
++    // change shared memory before we can compute the hash and write the data.
++    // TODO(1135729) Eliminate this copy when the shared memory can't be written
++    // by the sender.
++    mojo_base::BigBuffer copy({data.data(), data.size()});
++    if (copy.size() != data.size())
++      return;
++    data = mojo_base::BigBuffer();  // Release the old buffer.
+     uint8_t result[crypto::kSHA256Length];
+     crypto::SHA256HashString(
+-        base::StringPiece(reinterpret_cast<char*>(data.data()), data.size()),
++        base::StringPiece(reinterpret_cast<char*>(copy.data()), copy.size()),
+         result, base::size(result));
+     std::string checksum_key = base::HexEncode(result, base::size(result));
+     small_buffer = base::MakeRefCounted<net::IOBufferWithSize>(
+@@ -399,7 +408,7 @@ void GeneratedCodeCache::WriteEntry(const GURL& url,
+     // Issue another write operation for the code, with the checksum as the key
+     // and nothing in the header.
+     auto small_buffer2 = base::MakeRefCounted<net::IOBufferWithSize>(0);
+-    auto large_buffer2 = base::MakeRefCounted<BigIOBuffer>(std::move(data));
++    auto large_buffer2 = base::MakeRefCounted<BigIOBuffer>(std::move(copy));
+     auto op2 = std::make_unique<PendingOperation>(Operation::kWriteWithSHAKey,
+                                                   checksum_key, small_buffer2,
+                                                   large_buffer2);
diff --git a/patches/chromium/cherry-pick-19aeffd4d93f.patch b/patches/chromium/cherry-pick-19aeffd4d93f.patch
new file mode 100644
index 0000000000000..fed36e0b6164c
--- /dev/null
+++ b/patches/chromium/cherry-pick-19aeffd4d93f.patch
@@ -0,0 +1,124 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Matthew Denton <mpdenton@chromium.org>
+Date: Tue, 15 Dec 2020 01:09:52 +0000
+Subject: Fix UAF in ~MultiThreadedCertVerifier
+
+MultiThreadedCertVerifier keeps a list of
+MultiThreadedCertVerifier::InternalRequests in order to eagerly reset
+callbacks passed to Verify() if the MultiThreadedCertVerifier is
+itself deleted (CertVerifier contract guarantees this eager reset
+behavior).
+
+In ~MultiThreadedCertVerifier we loop through this list and reset the
+callbacks, but then delete the InternalRequest from the list. However,
+the callbacks are allowed to own the InternalRequest, so this leads
+to a UaF.
+
+We don't need to remove the InternalRequest from the list in
+~MultiThreadedCertVerifier, because we are not in charge of the
+lifetime of the InternalRequest. InternalRequest can remove itself
+from the list during ~InternalRequest, or MultiThreadedCertVerifier
+can remove it from the list when a CertVerification job is complete.
+The former is safe because ~InternalRequest won't remove itself from
+the list if the MultiThreadedCertVerifier is already destructed.
+The latter is obviously safe because if the request was cancelled,
+then InternalRequest::OnJobCompleted will never run, so
+|this| is always valid to remove from the list during
+InternalRequest::OnJobCompleted.
+
+The added test reproduces the UAF without the fix.
+
+Bug: 1157562
+Change-Id: I92d0dc6ca6df084f55ea511ea692853ee63f5033
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2587560
+Reviewed-by: Ryan Sleevi <rsleevi@chromium.org>
+Commit-Queue: Matthew Denton <mpdenton@chromium.org>
+Cr-Commit-Position: refs/heads/master@{#836903}
+
+diff --git a/net/cert/multi_threaded_cert_verifier.cc b/net/cert/multi_threaded_cert_verifier.cc
+index f2546d9187dc6aedbf5eab055d2017939df6a705..b46dbf68d0f239c2d002f9dedeecd6f10709f9c4 100644
+--- a/net/cert/multi_threaded_cert_verifier.cc
++++ b/net/cert/multi_threaded_cert_verifier.cc
+@@ -202,10 +202,13 @@ MultiThreadedCertVerifier::~MultiThreadedCertVerifier() {
+   DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
+   // Reset the callbacks for each InternalRequest to fulfill the respective
+   // net::CertVerifier contract.
+-  while (!request_list_.empty()) {
+-    base::LinkNode<InternalRequest>* curr = request_list_.head();
+-    curr->value()->ResetCallback();
+-    curr->RemoveFromList();
++  for (base::LinkNode<InternalRequest>* node = request_list_.head();
++       node != request_list_.end();) {
++    // Resetting the callback may delete the request, so save a pointer to the
++    // next node first.
++    base::LinkNode<InternalRequest>* next_node = node->next();
++    node->value()->ResetCallback();
++    node = next_node;
+   }
+ }
+ 
+diff --git a/net/cert/multi_threaded_cert_verifier.h b/net/cert/multi_threaded_cert_verifier.h
+index 82b750a42f8eb99675e35aa41ef167c1e7896a33..05c5463abffc61644e31293b6876801efc6138fb 100644
+--- a/net/cert/multi_threaded_cert_verifier.h
++++ b/net/cert/multi_threaded_cert_verifier.h
+@@ -50,6 +50,10 @@ class NET_EXPORT_PRIVATE MultiThreadedCertVerifier : public CertVerifier {
+   Config config_;
+   scoped_refptr<CertVerifyProc> verify_proc_;
+ 
++  // Holds a list of CertVerifier::Requests that have not yet completed or been
++  // deleted. It is used to ensure that when the MultiThreadedCertVerifier is
++  // deleted, we eagerly reset all of the callbacks provided to Verify(), and
++  // don't call them later, as required by the CertVerifier contract.
+   base::LinkedList<InternalRequest> request_list_;
+ 
+ #if defined(USE_NSS_CERTS)
+diff --git a/net/cert/multi_threaded_cert_verifier_unittest.cc b/net/cert/multi_threaded_cert_verifier_unittest.cc
+index 89c394541a94697036e34c7430e982c4eeb1a1f7..b5cf4bbaf3648f8b562fffd3804b65ab5b9379ab 100644
+--- a/net/cert/multi_threaded_cert_verifier_unittest.cc
++++ b/net/cert/multi_threaded_cert_verifier_unittest.cc
+@@ -152,6 +152,45 @@ TEST_F(MultiThreadedCertVerifierTest, DeleteVerifier) {
+   RunUntilIdle();
+ }
+ 
++namespace {
++
++struct CertVerifyResultHelper {
++  void FailTest(int /* result */) { FAIL(); }
++  std::unique_ptr<CertVerifier::Request> request;
++};
++
++}  // namespace
++
++// The same as the above "DeleteVerifier" test, except the callback provided
++// will own the CertVerifier::Request as allowed by the CertVerifier contract.
++// This is a regression test for https://crbug.com/1157562.
++TEST_F(MultiThreadedCertVerifierTest, DeleteVerifierCallbackOwnsResult) {
++  base::FilePath certs_dir = GetTestCertsDirectory();
++  scoped_refptr<X509Certificate> test_cert(
++      ImportCertFromFile(certs_dir, "ok_cert.pem"));
++  ASSERT_NE(static_cast<X509Certificate*>(nullptr), test_cert.get());
++
++  int error;
++  CertVerifyResult verify_result;
++  std::unique_ptr<CertVerifyResultHelper> result_helper =
++      std::make_unique<CertVerifyResultHelper>();
++  CertVerifyResultHelper* result_helper_ptr = result_helper.get();
++  CompletionOnceCallback callback = base::BindOnce(
++      &CertVerifyResultHelper::FailTest, std::move(result_helper));
++
++  error = verifier_->Verify(
++      CertVerifier::RequestParams(test_cert, "www.example.com", 0,
++                                  /*ocsp_response=*/std::string(),
++                                  /*sct_list=*/std::string()),
++      &verify_result, std::move(callback), &result_helper_ptr->request,
++      NetLogWithSource());
++  ASSERT_THAT(error, IsError(ERR_IO_PENDING));
++  ASSERT_TRUE(result_helper_ptr->request);
++  verifier_.reset();
++
++  RunUntilIdle();
++}
++
+ // Tests that a canceled request is not leaked.
+ TEST_F(MultiThreadedCertVerifierTest, CancelRequestThenQuit) {
+   base::FilePath certs_dir = GetTestCertsDirectory();
diff --git a/patches/chromium/cherry-pick-1ed869ad4bb3.patch b/patches/chromium/cherry-pick-1ed869ad4bb3.patch
new file mode 100644
index 0000000000000..feb9a3baeca80
--- /dev/null
+++ b/patches/chromium/cherry-pick-1ed869ad4bb3.patch
@@ -0,0 +1,160 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Reilly Grant <reillyg@chromium.org>
+Date: Wed, 7 Oct 2020 23:26:36 +0000
+Subject: usb: Prevent parallel calls to UsbDevice::Open
+
+This change adds a check to prevent a Mojo client from calling Open()
+multiple times while the open is in progress.
+
+Bug: 1135857
+Change-Id: Ib467de9129673710b883d9e186c32c359f8592d8
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2454846
+Auto-Submit: Reilly Grant <reillyg@chromium.org>
+Reviewed-by: Matt Reynolds <mattreynolds@chromium.org>
+Commit-Queue: Reilly Grant <reillyg@chromium.org>
+Cr-Commit-Position: refs/heads/master@{#814940}
+
+diff --git a/services/device/usb/mojo/device_impl.cc b/services/device/usb/mojo/device_impl.cc
+index 1e7a6a798cf43d24a6dcb42e4ac676098908e0a1..bc7081486476045ed7d957ba8cdec8a52227c517 100644
+--- a/services/device/usb/mojo/device_impl.cc
++++ b/services/device/usb/mojo/device_impl.cc
+@@ -160,6 +160,7 @@ void DeviceImpl::OnOpen(base::WeakPtr<DeviceImpl> self,
+     return;
+   }
+ 
++  self->opening_ = false;
+   self->device_handle_ = std::move(handle);
+   if (self->device_handle_ && self->client_)
+     self->client_->OnDeviceOpened();
+@@ -175,16 +176,19 @@ void DeviceImpl::OnPermissionGrantedForOpen(OpenCallback callback,
+     device_->Open(base::BindOnce(
+         &DeviceImpl::OnOpen, weak_factory_.GetWeakPtr(), std::move(callback)));
+   } else {
++    opening_ = false;
+     std::move(callback).Run(mojom::UsbOpenDeviceError::ACCESS_DENIED);
+   }
+ }
+ 
+ void DeviceImpl::Open(OpenCallback callback) {
+-  if (device_handle_) {
++  if (opening_ || device_handle_) {
+     std::move(callback).Run(mojom::UsbOpenDeviceError::ALREADY_OPEN);
+     return;
+   }
+ 
++  opening_ = true;
++
+   if (!device_->permission_granted()) {
+     device_->RequestPermission(
+         base::BindOnce(&DeviceImpl::OnPermissionGrantedForOpen,
+diff --git a/services/device/usb/mojo/device_impl.h b/services/device/usb/mojo/device_impl.h
+index ca3bffe4392f7607f7cf7445e2f21320fc02a82f..0965ca72663e14463aedfcff813c8307a1ebd447 100644
+--- a/services/device/usb/mojo/device_impl.h
++++ b/services/device/usb/mojo/device_impl.h
+@@ -106,7 +106,9 @@ class DeviceImpl : public mojom::UsbDevice, public device::UsbDevice::Observer {
+   ScopedObserver<device::UsbDevice, device::UsbDevice::Observer> observer_;
+ 
+   // The device handle. Will be null before the device is opened and after it
+-  // has been closed.
++  // has been closed. |opening_| is set to true while the asynchronous open is
++  // in progress.
++  bool opening_ = false;
+   scoped_refptr<UsbDeviceHandle> device_handle_;
+ 
+   mojo::SelfOwnedReceiverRef<mojom::UsbDevice> receiver_;
+diff --git a/services/device/usb/mojo/device_impl_unittest.cc b/services/device/usb/mojo/device_impl_unittest.cc
+index f0cd0eab4cf04d6f922c1748274d8f5f07a9452e..81045373bb3fa306b78f580f87424eacba36cd3d 100644
+--- a/services/device/usb/mojo/device_impl_unittest.cc
++++ b/services/device/usb/mojo/device_impl_unittest.cc
+@@ -22,6 +22,7 @@
+ #include "base/memory/ref_counted_memory.h"
+ #include "base/run_loop.h"
+ #include "base/stl_util.h"
++#include "base/test/bind_test_util.h"
+ #include "base/test/task_environment.h"
+ #include "mojo/public/cpp/bindings/interface_request.h"
+ #include "mojo/public/cpp/bindings/receiver.h"
+@@ -265,7 +266,10 @@ class USBDeviceImplTest : public testing::Test {
+   void OpenMockHandle(UsbDevice::OpenCallback& callback) {
+     EXPECT_FALSE(is_device_open_);
+     is_device_open_ = true;
+-    std::move(callback).Run(mock_handle_);
++    // Simulate the asynchronous device opening process.
++    base::SequencedTaskRunnerHandle::Get()->PostDelayedTask(
++        FROM_HERE, base::BindOnce(std::move(callback), mock_handle_),
++        base::TimeDelta::FromMilliseconds(1));
+   }
+ 
+   void CloseMockHandle() {
+@@ -515,17 +519,39 @@ TEST_F(USBDeviceImplTest, OpenFailure) {
+       GetMockDeviceProxy(device_client.CreateInterfacePtrAndBind());
+ 
+   EXPECT_CALL(mock_device(), OpenInternal(_))
+-      .WillOnce(Invoke([](UsbDevice::OpenCallback& callback) {
++      .WillOnce([](UsbDevice::OpenCallback& callback) {
+         std::move(callback).Run(nullptr);
+-      }));
++      });
+   EXPECT_CALL(device_client, OnDeviceOpened()).Times(0);
+   EXPECT_CALL(device_client, OnDeviceClosed()).Times(0);
+ 
+-  base::RunLoop loop;
+-  device->Open(base::BindOnce(&ExpectOpenAndThen,
+-                              mojom::UsbOpenDeviceError::ACCESS_DENIED,
+-                              loop.QuitClosure()));
+-  loop.Run();
++  {
++    base::RunLoop loop;
++    device->Open(
++        base::BindLambdaForTesting([&](mojom::UsbOpenDeviceError result) {
++          EXPECT_EQ(result, mojom::UsbOpenDeviceError::ACCESS_DENIED);
++          loop.Quit();
++        }));
++    loop.Run();
++  }
++
++  // A second attempt can succeed.
++  EXPECT_CALL(mock_device(), OpenInternal(_));
++  EXPECT_CALL(device_client, OnDeviceOpened());
++  EXPECT_CALL(device_client, OnDeviceClosed());
++
++  {
++    base::RunLoop loop;
++    device->Open(
++        base::BindLambdaForTesting([&](mojom::UsbOpenDeviceError result) {
++          EXPECT_EQ(result, mojom::UsbOpenDeviceError::OK);
++          loop.Quit();
++        }));
++    loop.Run();
++  }
++
++  device.reset();
++  base::RunLoop().RunUntilIdle();
+ }
+ 
+ TEST_F(USBDeviceImplTest, OpenDelayedFailure) {
+@@ -549,6 +575,24 @@ TEST_F(USBDeviceImplTest, OpenDelayedFailure) {
+   std::move(saved_callback).Run(nullptr);
+ }
+ 
++TEST_F(USBDeviceImplTest, MultipleOpenNotAllowed) {
++  MockUsbDeviceClient device_client;
++  mojo::Remote<mojom::UsbDevice> device =
++      GetMockDeviceProxy(device_client.CreateInterfacePtrAndBind());
++
++  base::RunLoop loop;
++  device->Open(
++      base::BindLambdaForTesting([&](mojom::UsbOpenDeviceError result) {
++        EXPECT_EQ(result, mojom::UsbOpenDeviceError::OK);
++      }));
++  device->Open(
++      base::BindLambdaForTesting([&](mojom::UsbOpenDeviceError result) {
++        EXPECT_EQ(result, mojom::UsbOpenDeviceError::ALREADY_OPEN);
++        loop.Quit();
++      }));
++  loop.Run();
++}
++
+ TEST_F(USBDeviceImplTest, Close) {
+   MockUsbDeviceClient device_client;
+   mojo::Remote<mojom::UsbDevice> device =
diff --git a/patches/chromium/cherry-pick-229fdaf8fc05.patch b/patches/chromium/cherry-pick-229fdaf8fc05.patch
new file mode 100644
index 0000000000000..66d712782e1bf
--- /dev/null
+++ b/patches/chromium/cherry-pick-229fdaf8fc05.patch
@@ -0,0 +1,64 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Guido Urdaneta <guidou@chromium.org>
+Date: Wed, 14 Oct 2020 19:40:12 +0000
+Subject: Validate input of MediaStreamDispatcherHost::OpenDevice()
+
+This method forwards to MediaStreamManager::OpenDevice(), which
+DCHECKs for the stream type to be device video or audio capture
+(i.e., webcam or mic). However, MSDH admits other stream types,
+which cause MSM::OpenDevice to hit this DCHECK.
+
+This CL ensures that a message containing an incorrect stream type,
+which could be sent by a malicious renderer, results in killing the
+renderer process.
+
+Bug: 1135018
+Change-Id: I3884dde95d92c41f44966a8ab1dd7bdfd4b23b9b
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2472397
+Auto-Submit: Guido Urdaneta <guidou@chromium.org>
+Commit-Queue: Guido Urdaneta <guidou@chromium.org>
+Reviewed-by: Avi Drissman <avi@chromium.org>
+Cr-Commit-Position: refs/heads/master@{#817151}
+
+diff --git a/content/browser/bad_message.h b/content/browser/bad_message.h
+index 0d5ef5f9d79dbc82a325f91b36350d01d760a064..ab0a195c2da772ea5825bb97e54743318bd06841 100644
+--- a/content/browser/bad_message.h
++++ b/content/browser/bad_message.h
+@@ -255,6 +255,7 @@ enum BadMessageReason {
+   RFH_INVALID_CALL_FROM_NOT_MAIN_FRAME = 227,
+   INPUT_ROUTER_INVALID_EVENT_SOURCE = 228,
+   RWH_CLOSE_PORTAL = 233,
++  MSDH_INVALID_STREAM_TYPE = 234,
+ 
+   // Please add new elements here. The naming convention is abbreviated class
+   // name (e.g. RenderFrameHost becomes RFH) plus a unique description of the
+diff --git a/content/browser/renderer_host/media/media_stream_dispatcher_host.cc b/content/browser/renderer_host/media/media_stream_dispatcher_host.cc
+index 3e43ba7ad5c9e7223df587f3126807618da17245..835c9be6981b0b0fa3548a4fa7629d19280aec76 100644
+--- a/content/browser/renderer_host/media/media_stream_dispatcher_host.cc
++++ b/content/browser/renderer_host/media/media_stream_dispatcher_host.cc
+@@ -196,6 +196,13 @@ void MediaStreamDispatcherHost::OpenDevice(int32_t page_request_id,
+                                            blink::mojom::MediaStreamType type,
+                                            OpenDeviceCallback callback) {
+   DCHECK_CURRENTLY_ON(BrowserThread::IO);
++  // OpenDevice is only supported for microphone or webcam capture.
++  if (type != blink::mojom::MediaStreamType::DEVICE_AUDIO_CAPTURE &&
++      type != blink::mojom::MediaStreamType::DEVICE_VIDEO_CAPTURE) {
++    bad_message::ReceivedBadMessage(
++        render_process_id_, bad_message::MDDH_INVALID_DEVICE_TYPE_REQUEST);
++    return;
++  }
+ 
+   base::PostTaskAndReplyWithResult(
+       GetUIThreadTaskRunner({}).get(), FROM_HERE,
+diff --git a/tools/metrics/histograms/enums.xml b/tools/metrics/histograms/enums.xml
+index c394f02fb8d8150689109bc2c853f63af965fc29..e6c4aadf3dd94baec25aa3e6ce24aae191a6d145 100644
+--- a/tools/metrics/histograms/enums.xml
++++ b/tools/metrics/histograms/enums.xml
+@@ -6154,6 +6154,7 @@ Unknown properties are collapsed to zero. -->
+   <int value="227" label="RFH_INVALID_CALL_FROM_NOT_MAIN_FRAME"/>
+   <int value="228" label="INPUT_ROUTER_INVALID_EVENT_SOURCE"/>
+   <int value="233" label="RWH_CLOSE_PORTAL"/>
++  <int value="234" label="MSDH_INVALID_STREAM_TYPE"/>
+ </enum>
+ 
+ <enum name="BadMessageReasonExtensions">
diff --git a/patches/chromium/cherry-pick-2d18de63acf1.patch b/patches/chromium/cherry-pick-2d18de63acf1.patch
new file mode 100644
index 0000000000000..6fc0a6d4f83af
--- /dev/null
+++ b/patches/chromium/cherry-pick-2d18de63acf1.patch
@@ -0,0 +1,52 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: danakj <danakj@chromium.org>
+Date: Tue, 17 Nov 2020 21:47:27 +0000
+Subject: Convert strides with padding in skia::SkBitmapToN32OpaqueOrPremul().
+
+Code using bitmaps converted with SkBitmapToN32OpaqueOrPremul() can
+easily assume that the pixels are one contiguous (width*4*height)-sized
+buffer. If it's not then out-of-bounds read/write can occur.
+
+Also adds tests for SkBitmapToN32OpaqueOrPremul().
+
+R=fmalita@chromium.org
+
+Bug: 1147431, 1144462
+Change-Id: I21f7a958a8c9231bf5f052f8ff246f2c249bd70b
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2544032
+Commit-Queue: danakj <danakj@chromium.org>
+Reviewed-by: Florin Malita <fmalita@chromium.org>
+Cr-Commit-Position: refs/heads/master@{#828406}
+
+diff --git a/skia/ext/skia_utils_base.cc b/skia/ext/skia_utils_base.cc
+index 516ad7ea1e3a0acb1c8b207f98f6daf534262cbc..f9e622eff3ec6c3287138d7cdf68814b8535a338 100644
+--- a/skia/ext/skia_utils_base.cc
++++ b/skia/ext/skia_utils_base.cc
+@@ -85,7 +85,8 @@ void WriteSkFontStyle(base::Pickle* pickle, SkFontStyle style) {
+ bool SkBitmapToN32OpaqueOrPremul(const SkBitmap& in, SkBitmap* out) {
+   DCHECK(out);
+   const SkImageInfo& info = in.info();
+-  if (info.colorType() == kN32_SkColorType &&
++  const bool stride_matches_width = in.rowBytes() == info.minRowBytes();
++  if (stride_matches_width && info.colorType() == kN32_SkColorType &&
+       (info.alphaType() == kPremul_SkAlphaType ||
+        info.alphaType() == kOpaque_SkAlphaType)) {
+     // Shallow copy if the data is already in the right format.
+diff --git a/skia/ext/skia_utils_base.h b/skia/ext/skia_utils_base.h
+index 2a1eca124e91695ddec635e593ad1e9b650aa156..40401bb2fe0e484fae64490757d63f85e5c5ffea 100644
+--- a/skia/ext/skia_utils_base.h
++++ b/skia/ext/skia_utils_base.h
+@@ -42,9 +42,10 @@ SK_API void WriteSkFontIdentity(
+ // Writes style into the request pickle.
+ SK_API void WriteSkFontStyle(base::Pickle* pickle, SkFontStyle style);
+ 
+-// Converts an SkBitmap to an Opaque or Premul N32 SkBitmap. If the input is in
+-// the right format (N32 Opaque or Premul) already, points |out| directly at
+-// |in|. |out| may or may not be GPU-backed.
++// Converts an SkBitmap to an Opaque or Premul N32 SkBitmap with stride matching
++// the width of each row. If the input is has the right format (N32 Opaque or
++// Premul) without stride padding already, this assigns `in` to `out`, sharing
++// the backing pixels. `out` may or may not be GPU-backed.
+ //
+ // If unsuccessful, returns false, but |out| may be modified.
+ SK_API bool SkBitmapToN32OpaqueOrPremul(const SkBitmap& in, SkBitmap* out);
diff --git a/patches/chromium/cherry-pick-30261f9de11e.patch b/patches/chromium/cherry-pick-30261f9de11e.patch
new file mode 100644
index 0000000000000..bd024f6e3c06d
--- /dev/null
+++ b/patches/chromium/cherry-pick-30261f9de11e.patch
@@ -0,0 +1,29 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Lei Zhang <thestig@chromium.org>
+Date: Thu, 1 Oct 2020 19:18:54 +0000
+Subject: Check RF is alive In PrintRenderFrameHelper::PreviewPageRendered().
+
+Do not take an accessibility snapshot if the RenderFrame is gone.
+
+Bug: 1133983
+Change-Id: I612cc72936a1dcedc5180c24eae067e47237b09b
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2442375
+Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
+Commit-Queue: Lei Zhang <thestig@chromium.org>
+Cr-Commit-Position: refs/heads/master@{#812851}
+
+diff --git a/components/printing/renderer/print_render_frame_helper.cc b/components/printing/renderer/print_render_frame_helper.cc
+index c0107f561f444d537735d4725c6dbecbcaf45226..1f7b7294aa5afb7f967ec260ab9f62d8b27d6827 100644
+--- a/components/printing/renderer/print_render_frame_helper.cc
++++ b/components/printing/renderer/print_render_frame_helper.cc
+@@ -2463,6 +2463,10 @@ bool PrintRenderFrameHelper::PreviewPageRendered(
+                "page_number", page_number);
+ 
+ #if BUILDFLAG(ENABLE_TAGGED_PDF)
++  // Make sure the RenderFrame is alive before taking the snapshot.
++  if (render_frame_gone_)
++    snapshotter_.reset();
++
+   // For tagged PDF exporting, send a snapshot of the accessibility tree
+   // along with page 0. The accessibility tree contains the content for
+   // all of the pages of the main frame.
diff --git a/patches/chromium/cherry-pick-37210e5ab006.patch b/patches/chromium/cherry-pick-37210e5ab006.patch
new file mode 100644
index 0000000000000..b64186ffe7809
--- /dev/null
+++ b/patches/chromium/cherry-pick-37210e5ab006.patch
@@ -0,0 +1,148 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Antonio Sartori <antoniosartori@chromium.org>
+Date: Mon, 8 Mar 2021 10:28:40 +0000
+Subject: Strip url to origin in X-Frame-Options violation messages
+
+X-Frame-Options violations are logged via a console message in the
+parent frame. To avoid leaking sensitive data to the parent frame,
+let's report as "blocked url" just the origin of the blocked frame's
+url, as we are already doing for the frame-ancestors CSP directive.
+
+[M86 Merge]: ancestor_throttle.cc was moved.
+
+(cherry picked from commit 93ce5606cd9a9597993ba70670b4092ab6722281)
+
+Bug: 1146651
+Change-Id: If5e5ac62f7e44e714b109e6adc389f11999e0f8b
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2534851
+Commit-Queue: Antonio Sartori <antoniosartori@chromium.org>
+Reviewed-by: Charlie Reis <creis@chromium.org>
+Reviewed-by: Arthur Sonzogni <arthursonzogni@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#828651}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2731577
+Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
+Commit-Queue: Victor-Gabriel Savu <vsavu@google.com>
+Cr-Commit-Position: refs/branch-heads/4240@{#1563}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/android_webview/javatests/src/org/chromium/android_webview/test/ConsoleMessagesForBlockedLoadsTest.java b/android_webview/javatests/src/org/chromium/android_webview/test/ConsoleMessagesForBlockedLoadsTest.java
+index 7394abb2e639a8f3b25cca0a568135cd4e8bd0d8..c746763be2a77a87a52e9ef31bbbd25de7ba03ae 100644
+--- a/android_webview/javatests/src/org/chromium/android_webview/test/ConsoleMessagesForBlockedLoadsTest.java
++++ b/android_webview/javatests/src/org/chromium/android_webview/test/ConsoleMessagesForBlockedLoadsTest.java
+@@ -94,7 +94,7 @@ public class ConsoleMessagesForBlockedLoadsTest {
+         mActivityTestRule.loadUrlSync(
+                 mAwContents, mContentsClient.getOnPageFinishedHelper(), pageUrl);
+         AwConsoleMessage errorMessage = getSingleErrorMessage();
+-        assertNotEquals(errorMessage.message().indexOf(iframeUrl), -1);
++        assertNotEquals(errorMessage.message().indexOf(mWebServer.getBaseUrl()), -1);
+     }
+ 
+     @Test
+diff --git a/content/browser/frame_host/ancestor_throttle.cc b/content/browser/frame_host/ancestor_throttle.cc
+index 8630ace7189d465cea8360a55acf899fa801f15e..75269311d73c1d9b881bc40f320265772b074d63 100644
+--- a/content/browser/frame_host/ancestor_throttle.cc
++++ b/content/browser/frame_host/ancestor_throttle.cc
+@@ -239,12 +239,20 @@ void AncestorThrottle::ParseXFrameOptionsError(const std::string& value,
+         "Refused to display '%s' in a frame because it set multiple "
+         "'X-Frame-Options' headers with conflicting values "
+         "('%s'). Falling back to 'deny'.",
+-        navigation_handle()->GetURL().spec().c_str(), value.c_str());
++        url::Origin::Create(navigation_handle()->GetURL())
++            .GetURL()
++            .spec()
++            .c_str(),
++        value.c_str());
+   } else {
+     message = base::StringPrintf(
+         "Invalid 'X-Frame-Options' header encountered when loading '%s': "
+         "'%s' is not a recognized directive. The header will be ignored.",
+-        navigation_handle()->GetURL().spec().c_str(), value.c_str());
++        url::Origin::Create(navigation_handle()->GetURL())
++            .GetURL()
++            .spec()
++            .c_str(),
++        value.c_str());
+   }
+ 
+   // Log a console error in the parent of the current RenderFrameHost (as
+@@ -265,11 +273,19 @@ void AncestorThrottle::ConsoleErrorXFrameOptions(
+   std::string message = base::StringPrintf(
+       "Refused to display '%s' in a frame because it set 'X-Frame-Options' "
+       "to '%s'.",
+-      navigation_handle()->GetURL().spec().c_str(),
++      url::Origin::Create(navigation_handle()->GetURL())
++          .GetURL()
++          .spec()
++          .c_str(),
+       disposition == HeaderDisposition::DENY ? "deny" : "sameorigin");
+ 
+   // Log a console error in the parent of the current RenderFrameHost (as
+   // the current RenderFrameHost itself doesn't yet have a document).
++  //
++  // TODO(https://crbug.com/1146651): We should not leak any information at all
++  // to the parent frame. Send a message directly to Devtools instead (without
++  // passing through a renderer): that can also contain more information (like
++  // the full blocked url).
+   auto* frame = static_cast<RenderFrameHostImpl*>(
+       navigation_handle()->GetRenderFrameHost());
+   ParentForAncestorThrottle(frame)->AddMessageToConsole(
+diff --git a/content/browser/site_per_process_browsertest.cc b/content/browser/site_per_process_browsertest.cc
+index d81076da5ef7701475ef1158b528d02d3992ff0d..10d1a58f143906a77df33ae8da3cc1df7605c07b 100644
+--- a/content/browser/site_per_process_browsertest.cc
++++ b/content/browser/site_per_process_browsertest.cc
+@@ -7109,12 +7109,26 @@ IN_PROC_BROWSER_TEST_P(SitePerProcessBrowserTest,
+                             "document.querySelector('iframe').onload = "
+                             "    function() { document.title = 'loaded'; };"));
+ 
++  // The blocked url reported in the console message should only contain the
++  // origin, in order to avoid sensitive data being leaked to the parent frame.
++  //
++  // TODO(https://crbug.com/1146651): We should not leak any information at all
++  // to the parent frame. Instead, we should send a message directly to Devtools
++  // (without passing through a renderer): that can also contain more
++  // information (like the full blocked url).
++  GURL reported_blocked_url = embedded_test_server()->GetURL("b.com", "/");
+   const struct {
+     const char* url;
+     bool use_error_page;
++    std::string expected_console_message;
+   } kTestCases[] = {
+-      {"/frame-ancestors-none.html", false},
+-      {"/x-frame-options-deny.html", true},
++      {"/frame-ancestors-none.html", false,
++       "Refused to frame '" + reported_blocked_url.spec() +
++           "' because an ancestor violates the following Content Security "
++           "Policy directive: \"frame-ancestors 'none'\".\n"},
++      {"/x-frame-options-deny.html", true,
++       "Refused to display '" + reported_blocked_url.spec() +
++           "' in a frame because it set 'X-Frame-Options' to 'deny'."},
+   };
+ 
+   for (const auto& test : kTestCases) {
+@@ -7123,6 +7137,9 @@ IN_PROC_BROWSER_TEST_P(SitePerProcessBrowserTest,
+     base::string16 expected_title(base::UTF8ToUTF16("loaded"));
+     TitleWatcher title_watcher(shell()->web_contents(), expected_title);
+ 
++    WebContentsConsoleObserver console_observer(shell()->web_contents());
++    console_observer.SetPattern("Refused to*");
++
+     // Navigate the subframe to a blocked URL.
+     TestNavigationObserver load_observer(shell()->web_contents());
+     EXPECT_TRUE(ExecuteScript(
+@@ -7150,6 +7167,8 @@ IN_PROC_BROWSER_TEST_P(SitePerProcessBrowserTest,
+     // The blocked frame should still fire a load event in its parent's process.
+     EXPECT_EQ(expected_title, title_watcher.WaitAndGetTitle());
+ 
++    EXPECT_EQ(console_observer.GetMessageAt(0u), test.expected_console_message);
++
+     // Check that the current RenderFrameHost has stopped loading.
+     EXPECT_FALSE(root->child_at(0)->current_frame_host()->is_loading());
+ 
+diff --git a/third_party/blink/web_tests/http/tests/security/XFrameOptions/x-frame-options-deny-delete-frame-in-load-event-expected.txt b/third_party/blink/web_tests/http/tests/security/XFrameOptions/x-frame-options-deny-delete-frame-in-load-event-expected.txt
+index f2e5b68c997ca33da841aa7ba5795ef3b96fa02f..f7eea4a189ae8913921444428e26389dfd4de4da 100644
+--- a/third_party/blink/web_tests/http/tests/security/XFrameOptions/x-frame-options-deny-delete-frame-in-load-event-expected.txt
++++ b/third_party/blink/web_tests/http/tests/security/XFrameOptions/x-frame-options-deny-delete-frame-in-load-event-expected.txt
+@@ -1,2 +1,2 @@
+-CONSOLE ERROR: Refused to display 'http://127.0.0.1:8000/security/XFrameOptions/resources/x-frame-options-deny.cgi' in a frame because it set 'X-Frame-Options' to 'deny'.
++CONSOLE ERROR: Refused to display 'http://127.0.0.1:8000/' in a frame because it set 'X-Frame-Options' to 'deny'.
+ Test that if an iframe is denied, we don't crash if the load event detaches the frame.
diff --git a/patches/chromium/cherry-pick-3910c9f5cde6.patch b/patches/chromium/cherry-pick-3910c9f5cde6.patch
new file mode 100644
index 0000000000000..48d9712e083be
--- /dev/null
+++ b/patches/chromium/cherry-pick-3910c9f5cde6.patch
@@ -0,0 +1,224 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Raymond Toy <rtoy@chromium.org>
+Date: Tue, 2 Mar 2021 15:15:29 +0000
+Subject: Convert AudioParam NaN values to the default value
+
+If any output value of an AudioParam (including the intrinsic values
+and any inputs to the AudioParam), should be NaN, replace the NaN
+value with the associated defaultValue.
+
+This causes some slowdowns so SIMD/NEON code was added to mitigate the
+degradation.  There is still some slowdown, but the worst case is now
+about 7% slower on x86 and 10% on arm. Generally, the slowdown is less
+than 2% and 5%, respectively.  (Perversely, some results got faster,
+and the differences are statistically significant.)
+
+Full details can be found at
+https://docs.google.com/spreadsheets/d/1EhbLHm-9cUoEO5aj1vYemVBLQ3Dh4dCJPPLTfZPrZt4/edit?usp=sharing
+
+Manually tested the test case from the bug and the issue no longer
+occurs.
+
+(cherry picked from commit ab1862017b5717271a28376659944dddc602195c)
+
+(cherry picked from commit eb0c0353bf245885797d8ce0d1b864d88a381fbb)
+
+Bug: 1170531
+Change-Id: I00d902b40a9ef9da990c6d68b664b1dcfc31b091
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2658724
+Commit-Queue: Raymond Toy <rtoy@chromium.org>
+Reviewed-by: Hongchan Choi <hongchan@chromium.org>
+Cr-Original-Original-Commit-Position: refs/heads/master@{#851733}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2686369
+Reviewed-by: Raymond Toy <rtoy@chromium.org>
+Cr-Original-Commit-Position: refs/branch-heads/4389@{#880}
+Cr-Original-Branched-From: 9251c5db2b6d5a59fe4eac7aafa5fed37c139bb7-refs/heads/master@{#843830}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2727697
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Commit-Queue: Artem Sumaneev <asumaneev@google.com>
+Cr-Commit-Position: refs/branch-heads/4240@{#1551}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/third_party/blink/renderer/modules/webaudio/audio_param.cc b/third_party/blink/renderer/modules/webaudio/audio_param.cc
+index c5d329479a412d52ee39167ff841b1cea417a217..135588f56ebceabd3e0a12f9f506955bb58b20ca 100644
+--- a/third_party/blink/renderer/modules/webaudio/audio_param.cc
++++ b/third_party/blink/renderer/modules/webaudio/audio_param.cc
+@@ -25,6 +25,7 @@
+ 
+ #include "third_party/blink/renderer/modules/webaudio/audio_param.h"
+ 
++#include "build/build_config.h"
+ #include "third_party/blink/renderer/core/inspector/console_message.h"
+ #include "third_party/blink/renderer/modules/webaudio/audio_graph_tracer.h"
+ #include "third_party/blink/renderer/modules/webaudio/audio_node.h"
+@@ -235,6 +236,49 @@ void AudioParamHandler::CalculateSampleAccurateValues(
+   CalculateFinalValues(values, number_of_values, IsAudioRate());
+ }
+ 
++// Replace NaN values in |values| with |default_value|.
++static void HandleNaNValues(float* values,
++                            unsigned number_of_values,
++                            float default_value) {
++  unsigned k = 0;
++#if defined(ARCH_CPU_X86_FAMILY)
++  if (number_of_values >= 4) {
++    __m128 defaults = _mm_set1_ps(default_value);
++    for (k = 0; k < number_of_values; k += 4) {
++      __m128 v = _mm_loadu_ps(values + k);
++      // cmpuord returns all 1's if v is NaN for each elmeent of v.
++      __m128 isnan = _mm_cmpunord_ps(v, v);
++      // Replace NaN parts with default.
++      __m128 result = _mm_and_ps(isnan, defaults);
++      // Merge in the parts that aren't NaN
++      result = _mm_or_ps(_mm_andnot_ps(isnan, v), result);
++      _mm_storeu_ps(values + k, result);
++    }
++  }
++#elif defined(CPU_ARM_NEON)
++  if (number_of_values >= 4) {
++    uint32x4_t defaults = static_cast<uint32x4_t>(vdupq_n_f32(default_value));
++    for (k = 0; k < number_of_values; k += 4) {
++      float32x4_t v = vld1q_f32(values + k);
++      // Returns true (all ones) if v is not NaN
++      uint32x4_t is_not_nan = vceqq_f32(v, v);
++      // Get the parts that are not NaN
++      uint32x4_t result = vandq_u32(is_not_nan, v);
++      // Replace the parts that are NaN with the default and merge with previous
++      // result.  (Note: vbic_u32(x, y) = x and not y)
++      result = vorrq_u32(result, vbicq_u32(defaults, is_not_nan));
++      vst1q_f32(values + k, static_cast<float32x4_t>(result));
++    }
++  }
++#endif
++
++  for (; k < number_of_values; ++k) {
++    if (std::isnan(values[k])) {
++      values[k] = default_value;
++    }
++  }
++}
++
+ void AudioParamHandler::CalculateFinalValues(float* values,
+                                              unsigned number_of_values,
+                                              bool sample_accurate) {
+@@ -297,10 +341,21 @@ void AudioParamHandler::CalculateFinalValues(float* values,
+       }
+     }
+ 
+-    // Clamp the values now to the nominal range
+     float min_value = MinValue();
+     float max_value = MaxValue();
+ 
++    if (NumberOfRenderingConnections() > 0) {
++      // AudioParams by themselves don't produce NaN because of the finite min
++      // and max values.  But an input to an AudioParam could have NaNs.
++      //
++      // NaN values in AudioParams must be replaced by the AudioParam's
++      // defaultValue.  Then these values must be clamped to lie in the nominal
++      // range between the AudioParam's minValue and maxValue.
++      //
++      // See https://webaudio.github.io/web-audio-api/#computation-of-value.
++      HandleNaNValues(values, number_of_values, DefaultValue());
++    }
++
+     vector_math::Vclip(values, 1, &min_value, &max_value, values, 1,
+                        number_of_values);
+   }
+diff --git a/third_party/blink/web_tests/external/wpt/webaudio/the-audio-api/the-audioparam-interface/nan-param.html b/third_party/blink/web_tests/external/wpt/webaudio/the-audio-api/the-audioparam-interface/nan-param.html
+new file mode 100644
+index 0000000000000000000000000000000000000000..e9b8f0accbd1b0359275615f3ef12bd7e9317c4f
+--- /dev/null
++++ b/third_party/blink/web_tests/external/wpt/webaudio/the-audio-api/the-audioparam-interface/nan-param.html
+@@ -0,0 +1,92 @@
++<!doctype html>
++<html>
++  <head>
++    <title>Test Flushing of NaN to Zero in AudioParams</title>
++    <script src="/resources/testharness.js"></script>
++    <script src="/resources/testharnessreport.js"></script>
++    <script src="/webaudio/resources/audit-util.js"></script>
++    <script src="/webaudio/resources/audit.js"></script>
++  </head>
++
++  <body>
++    <script>
++      let audit = Audit.createTaskRunner();
++
++      // See
++      // https://webaudio.github.io/web-audio-api/#computation-of-value.
++      //
++      // The computed value must replace NaN values in the output with
++      // the default value of the param.
++      audit.define('AudioParam NaN', async (task, should) => {
++        // For testing, we only need a small number of frames; and
++        // a low sample rate is perfectly fine.  Use two channels.
++        // The first channel is for the AudioParam output.  The
++        // second channel is for the AudioParam input.
++        let context = new OfflineAudioContext(
++            {numberOfChannels: 2, length: 256, sampleRate: 8192});
++        let merger = new ChannelMergerNode(
++            context, {numberOfInputs: context.destination.channelCount});
++        merger.connect(context.destination);
++
++        // A constant source with a huge value.
++        let mod = new ConstantSourceNode(context, {offset: 1e30});
++
++        // Gain nodes with a huge positive gain and huge negative
++        // gain.  Combined with the huge offset in |mod|, the
++        // output of the gain nodes are +Infinity and -Infinity.
++        let gainPos = new GainNode(context, {gain: 1e30});
++        let gainNeg = new GainNode(context, {gain: -1e30});
++
++        mod.connect(gainPos);
++        mod.connect(gainNeg);
++
++        // Connect these to the second merger channel. This is a
++        // sanity check that the AudioParam input really is NaN.
++        gainPos.connect(merger, 0, 1);
++        gainNeg.connect(merger, 0, 1);
++
++        // Source whose AudioParam is connected to the graph
++        // that produces NaN values.  Use a non-default value offset
++        // just in case something is wrong we get default for some
++        // other reason.
++        let src = new ConstantSourceNode(context, {offset: 100});
++
++        gainPos.connect(src.offset);
++        gainNeg.connect(src.offset);
++
++        // AudioParam output goes to channel 1 of the destination.
++        src.connect(merger, 0, 0);
++
++        // Let's go!
++        mod.start();
++        src.start();
++
++        let buffer = await context.startRendering();
++
++        let input = buffer.getChannelData(1);
++        let output = buffer.getChannelData(0);
++
++        // Have to test manually for NaN values in the input because
++        // NaN fails all comparisons.
++        let isNaN = true;
++        for (let k = 0; k < input.length; ++k) {
++          if (!Number.isNaN(input[k])) {
++            isNaN = false;
++            break;
++          }
++        }
++
++        should(isNaN, 'AudioParam input contains only NaN').beTrue();
++
++        // Output of the AudioParam should have all NaN values
++        // replaced by the default.
++        should(output, 'AudioParam output')
++            .beConstantValueOf(src.offset.defaultValue);
++
++        task.done();
++      });
++
++      audit.run();
++    </script>
++  </body>
++</html>
diff --git a/patches/chromium/cherry-pick-3abc372c9c00.patch b/patches/chromium/cherry-pick-3abc372c9c00.patch
new file mode 100644
index 0000000000000..d0bb9c06a4d40
--- /dev/null
+++ b/patches/chromium/cherry-pick-3abc372c9c00.patch
@@ -0,0 +1,61 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Xiaocheng Hu <xiaochengh@chromium.org>
+Date: Tue, 3 Nov 2020 23:00:29 +0000
+Subject: Apply markup sanitizer in CompositeEditCommand::MoveParagraphs()
+
+CompositeEditCommand::MoveParagraphs() serailizes part of the DOM and
+then re-parse it and insert it at some other place of the document. This
+is essentially a copy-and-paste, and can be exploited in the same way
+how copy-and-paste is exploited. So we should also sanitize markup in
+the function.
+
+(cherry picked from commit c529cbcc1bb0f72af944c30f03c2b3b435317bc7)
+
+Bug: 1141350
+Change-Id: I25c1dfc61c20b9134b23e057c5a3a0f56c190b5c
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2500633
+Commit-Queue: Yoshifumi Inoue <yosin@chromium.org>
+Reviewed-by: Yoshifumi Inoue <yosin@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#821098}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2518088
+Reviewed-by: Xiaocheng Hu <xiaochengh@chromium.org>
+Commit-Queue: Xiaocheng Hu <xiaochengh@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4280@{#1099}
+Cr-Branched-From: ea420fb963f9658c9969b6513c56b8f47efa1a2a-refs/heads/master@{#812852}
+
+diff --git a/third_party/blink/renderer/core/editing/commands/composite_edit_command.cc b/third_party/blink/renderer/core/editing/commands/composite_edit_command.cc
+index 08a19440da1bff652481c3cedae2f1edb2b58246..0ba9af6cff6dd6eaa373a0f4dca37226aee85ca0 100644
+--- a/third_party/blink/renderer/core/editing/commands/composite_edit_command.cc
++++ b/third_party/blink/renderer/core/editing/commands/composite_edit_command.cc
+@@ -1507,19 +1507,18 @@ void CompositeEditCommand::MoveParagraphs(
+   // FIXME: This is an inefficient way to preserve style on nodes in the
+   // paragraph to move. It shouldn't matter though, since moved paragraphs will
+   // usually be quite small.
+-  DocumentFragment* fragment =
+-      start_of_paragraph_to_move.DeepEquivalent() !=
+-              end_of_paragraph_to_move.DeepEquivalent()
+-          ? CreateFragmentFromMarkup(
+-                GetDocument(),
+-                CreateMarkup(start.ParentAnchoredEquivalent(),
+-                             end.ParentAnchoredEquivalent(),
+-                             CreateMarkupOptions::Builder()
+-                                 .SetShouldConvertBlocksToInlines(true)
+-                                 .SetConstrainingAncestor(constraining_ancestor)
+-                                 .Build()),
+-                "", kDisallowScriptingAndPluginContent)
+-          : nullptr;
++  DocumentFragment* fragment = nullptr;
++  if (start_of_paragraph_to_move.DeepEquivalent() !=
++      end_of_paragraph_to_move.DeepEquivalent()) {
++    const String paragraphs_markup = CreateMarkup(
++        start.ParentAnchoredEquivalent(), end.ParentAnchoredEquivalent(),
++        CreateMarkupOptions::Builder()
++            .SetShouldConvertBlocksToInlines(true)
++            .SetConstrainingAncestor(constraining_ancestor)
++            .Build());
++    fragment = CreateSanitizedFragmentFromMarkupWithContext(
++        GetDocument(), paragraphs_markup, 0, paragraphs_markup.length(), "");
++  }
+ 
+   // A non-empty paragraph's style is moved when we copy and move it.  We don't
+   // move anything if we're given an empty paragraph, but an empty paragraph can
diff --git a/patches/chromium/cherry-pick-3c80bb2a594f.patch b/patches/chromium/cherry-pick-3c80bb2a594f.patch
new file mode 100644
index 0000000000000..e8f0e9fcd93dc
--- /dev/null
+++ b/patches/chromium/cherry-pick-3c80bb2a594f.patch
@@ -0,0 +1,46 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jana Grill <janagrill@google.com>
+Date: Wed, 14 Apr 2021 08:40:10 +0000
+Subject: Forbid script execution while updating the paint lifecycle.
+
+(cherry picked from commit 5425d3b100fab533ea9ddc2ed8fbfc4870db0587)
+
+Bug: 1196781
+Change-Id: Idc8d24792d5c413691977b09ca821de4e13887ad
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2812000
+Commit-Queue: Adrian Taylor <adetaylor@chromium.org>
+Commit-Queue: Robert Flack <flackr@chromium.org>
+Reviewed-by: Xianzhu Wang <wangxianzhu@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#870275}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2821879
+Reviewed-by: Robert Flack <flackr@chromium.org>
+Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Commit-Queue: Jana Grill <janagrill@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1601}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/third_party/blink/renderer/core/frame/local_frame_view.cc b/third_party/blink/renderer/core/frame/local_frame_view.cc
+index 9a4c7a5249424b021759bf7895dd3f343b9641e6..37054d34157e7f4b4d65b022cdb83c832deb26a8 100644
+--- a/third_party/blink/renderer/core/frame/local_frame_view.cc
++++ b/third_party/blink/renderer/core/frame/local_frame_view.cc
+@@ -2648,11 +2648,14 @@ void LocalFrameView::RunPaintLifecyclePhase() {
+         for (PaintLayerScrollableArea* area : *animating_scrollable_areas)
+           area->UpdateCompositorScrollAnimations();
+       }
+-      frame_view.GetLayoutView()
+-          ->GetDocument()
+-          .GetDocumentAnimations()
+-          .UpdateAnimations(DocumentLifecycle::kPaintClean,
+-                            paint_artifact_compositor_.get());
++      {
++        ScriptForbiddenScope forbid_script;
++        frame_view.GetLayoutView()
++            ->GetDocument()
++            .GetDocumentAnimations()
++            .UpdateAnimations(DocumentLifecycle::kPaintClean,
++                              paint_artifact_compositor_.get());
++      }
+     });
+ 
+     // Initialize animation properties in the newly created paint property
diff --git a/patches/chromium/cherry-pick-3ca3d70c7af5.patch b/patches/chromium/cherry-pick-3ca3d70c7af5.patch
new file mode 100644
index 0000000000000..40023c2b2685a
--- /dev/null
+++ b/patches/chromium/cherry-pick-3ca3d70c7af5.patch
@@ -0,0 +1,56 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Yuri Wiitala <miu@chromium.org>
+Date: Thu, 10 Dec 2020 18:07:39 +0000
+Subject: Minor UI logic changes to prevent a UAF bug when starting tab
+ capture.
+
+See discussion in crbug 1155426 for details. Changes:
+
+MediaStreamCaptureIndicator::UIDelegate: Ignore multiple calls to
+OnStarted().
+
+TabSharingUIViews: Unconditionally execute clean-up tasks in destructor.
+
+Bug: 1155426
+Change-Id: I392fba38118ce51744ba36b4dec19ebfe39f1fbe
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2581028
+Reviewed-by: Guido Urdaneta <guidou@chromium.org>
+Reviewed-by: Marina Ciocea <marinaciocea@chromium.org>
+Commit-Queue: Yuri Wiitala <miu@chromium.org>
+Cr-Commit-Position: refs/heads/master@{#835736}
+
+diff --git a/chrome/browser/media/webrtc/media_stream_capture_indicator.cc b/chrome/browser/media/webrtc/media_stream_capture_indicator.cc
+index ce93d308a3d1099d9edbeea88ce8d05e60158117..99203ebb36edc21697518d172d67831deed8ba04 100644
+--- a/chrome/browser/media/webrtc/media_stream_capture_indicator.cc
++++ b/chrome/browser/media/webrtc/media_stream_capture_indicator.cc
+@@ -186,7 +186,12 @@ class MediaStreamCaptureIndicator::UIDelegate : public content::MediaStreamUI {
+   gfx::NativeViewId OnStarted(
+       base::OnceClosure stop_callback,
+       content::MediaStreamUI::SourceCallback source_callback) override {
+-    DCHECK(!started_);
++    if (started_) {
++      // Ignore possibly-compromised renderers that might call
++      // MediaStreamDispatcherHost::OnStreamStarted() more than once.
++      // See: https://crbug.com/1155426
++      return 0;
++    }
+     started_ = true;
+ 
+     if (device_usage_) {
+diff --git a/chrome/browser/ui/views/tab_sharing/tab_sharing_ui_views.cc b/chrome/browser/ui/views/tab_sharing/tab_sharing_ui_views.cc
+index 1582ccedd3fac5368e7adf94ec222e5d85b18aab..35e4f3e93c41f52fb50599da4050c0f3c25dd0d4 100644
+--- a/chrome/browser/ui/views/tab_sharing/tab_sharing_ui_views.cc
++++ b/chrome/browser/ui/views/tab_sharing/tab_sharing_ui_views.cc
+@@ -134,8 +134,10 @@ TabSharingUIViews::TabSharingUIViews(const content::DesktopMediaID& media_id,
+ }
+ 
+ TabSharingUIViews::~TabSharingUIViews() {
+-  if (!infobars_.empty())
+-    StopSharing();
++  // Unconditionally call StopSharing(), to ensure all clean-up has been
++  // performed if tasks race (e.g., OnStarted() is called after
++  // OnInfoBarRemoved()). See: https://crbug.com/1155426
++  StopSharing();
+ }
+ 
+ gfx::NativeViewId TabSharingUIViews::OnStarted(
diff --git a/patches/chromium/cherry-pick-406ae3e8a9a8.patch b/patches/chromium/cherry-pick-406ae3e8a9a8.patch
new file mode 100644
index 0000000000000..a922984741905
--- /dev/null
+++ b/patches/chromium/cherry-pick-406ae3e8a9a8.patch
@@ -0,0 +1,100 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Ken Rockot <rockot@google.com>
+Date: Tue, 20 Apr 2021 15:46:33 +0000
+Subject: M86-LTS: Mojo: Properly validate broadcast events
+
+This corrects broadcast event deserialization by adding a missing
+validation step when decoding the outer message header.
+
+(cherry picked from commit 6740adb28374ddeee13febfd5e5d20cb8a365979)
+
+Fixed: 1195308
+Change-Id: Ia67a20e48614e7ef00b1b32f7f4e5f20235be310
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2808678
+Reviewed-by: Daniel Cheng <dcheng@chromium.org>
+Commit-Queue: Ken Rockot <rockot@google.com>
+Cr-Original-Commit-Position: refs/heads/master@{#870238}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2837712
+Owners-Override: Achuith Bhandarkar <achuith@chromium.org>
+Auto-Submit: Achuith Bhandarkar <achuith@chromium.org>
+Reviewed-by: Artem Sumaneev <asumaneev@google.com>
+Commit-Queue: Achuith Bhandarkar <achuith@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1614}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/mojo/core/node_channel.cc b/mojo/core/node_channel.cc
+index 061ea1026e95d1b1f80a762ce377aebdd97e1b42..07e3b8b21f7ef70b64d214ec03e0dd1eb807fad6 100644
+--- a/mojo/core/node_channel.cc
++++ b/mojo/core/node_channel.cc
+@@ -191,13 +191,16 @@ Channel::MessagePtr NodeChannel::CreateEventMessage(size_t capacity,
+ }
+ 
+ // static
+-void NodeChannel::GetEventMessageData(Channel::Message* message,
++bool NodeChannel::GetEventMessageData(Channel::Message& message,
+                                       void** data,
+                                       size_t* num_data_bytes) {
+-  // NOTE: OnChannelMessage guarantees that we never accept a Channel::Message
+-  // with a payload of fewer than |sizeof(Header)| bytes.
+-  *data = reinterpret_cast<Header*>(message->mutable_payload()) + 1;
+-  *num_data_bytes = message->payload_size() - sizeof(Header);
++  // NOTE: Callers must guarantee that the payload in `message` must be at least
++  // large enough to hold a Header.
++  if (message.payload_size() < sizeof(Header))
++    return false;
++  *data = reinterpret_cast<Header*>(message.mutable_payload()) + 1;
++  *num_data_bytes = message.payload_size() - sizeof(Header);
++  return true;
+ }
+ 
+ void NodeChannel::Start() {
+diff --git a/mojo/core/node_channel.h b/mojo/core/node_channel.h
+index 58ab42bd01fc856856d171985dac50934d4e00b2..7ae08e3e73110667f0eafe0fe4f70242bfeece39 100644
+--- a/mojo/core/node_channel.h
++++ b/mojo/core/node_channel.h
+@@ -90,7 +90,9 @@ class MOJO_SYSTEM_IMPL_EXPORT NodeChannel
+                                                 void** payload,
+                                                 size_t num_handles);
+ 
+-  static void GetEventMessageData(Channel::Message* message,
++  // Retrieves address and size of an Event message's underlying message data.
++  // Returns `false` if the message is not a valid Event message.
++  static bool GetEventMessageData(Channel::Message& message,
+                                   void** data,
+                                   size_t* num_data_bytes);
+ 
+diff --git a/mojo/core/node_controller.cc b/mojo/core/node_controller.cc
+index c333ed64f71f0dfe5d0012b07bcedccfd94cd5e9..a8b8520729510408dc822532271d0ff4a36a7151 100644
+--- a/mojo/core/node_controller.cc
++++ b/mojo/core/node_controller.cc
+@@ -76,7 +76,9 @@ ports::ScopedEvent DeserializeEventMessage(
+     Channel::MessagePtr channel_message) {
+   void* data;
+   size_t size;
+-  NodeChannel::GetEventMessageData(channel_message.get(), &data, &size);
++  bool valid = NodeChannel::GetEventMessageData(*channel_message, &data, &size);
++  if (!valid)
++    return nullptr;
+   auto event = ports::Event::Deserialize(data, size);
+   if (!event)
+     return nullptr;
+diff --git a/mojo/core/user_message_impl.cc b/mojo/core/user_message_impl.cc
+index 2f1665e55cf0af69c58c21f2e0d602a93e79052e..a6b35b2cd812bb0da7026b088aa0d96acbbc6a2f 100644
+--- a/mojo/core/user_message_impl.cc
++++ b/mojo/core/user_message_impl.cc
+@@ -415,7 +415,14 @@ Channel::MessagePtr UserMessageImpl::FinalizeEventMessage(
+   if (channel_message) {
+     void* data;
+     size_t size;
+-    NodeChannel::GetEventMessageData(channel_message.get(), &data, &size);
++    // The `channel_message` must either be produced locally or must have
++    // already been validated by the caller, as is done for example by
++    // NodeController::DeserializeEventMessage before
++    // NodeController::OnBroadcast re-serializes each copy of the message it
++    // received.
++    bool result =
++        NodeChannel::GetEventMessageData(*channel_message, &data, &size);
++    DCHECK(result);
+     message_event->Serialize(data);
+   }
+ 
diff --git a/patches/chromium/cherry-pick-4794770cf175.patch b/patches/chromium/cherry-pick-4794770cf175.patch
new file mode 100644
index 0000000000000..85b614d9a1528
--- /dev/null
+++ b/patches/chromium/cherry-pick-4794770cf175.patch
@@ -0,0 +1,326 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Adam Rice <ricea@chromium.org>
+Date: Fri, 4 Dec 2020 10:19:12 +0000
+Subject: Correctly handle detach during (de)compression
+
+Sometimes CompressionStream and DecompressionStream enqueue multiple
+output chunks for a single input chunk. When this happens, JavaScript
+code can detach the input ArrayBuffer while the stream is processing it.
+This will cause an error when zlib tries to read the buffer again
+afterwards.
+
+To prevent this, buffer output chunks until the entire input chunk has
+been processed, and then enqueue them all at once.
+
+Bug: 1151298
+Change-Id: I03fca26fc641d54b09067e3994b76ee8efca6839
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2567539
+Commit-Queue: Adam Rice <ricea@chromium.org>
+Reviewed-by: Yutaka Hirano <yhirano@chromium.org>
+Cr-Commit-Position: refs/heads/master@{#833659}
+
+diff --git a/third_party/blink/renderer/modules/compression/deflate_transformer.cc b/third_party/blink/renderer/modules/compression/deflate_transformer.cc
+index e663e563d58e90cdce5185636d1b1aa75491195c..e806b84afbb6cd82c53832e0c0b455ae0767a34a 100644
+--- a/third_party/blink/renderer/modules/compression/deflate_transformer.cc
++++ b/third_party/blink/renderer/modules/compression/deflate_transformer.cc
+@@ -111,6 +111,10 @@ void DeflateTransformer::Deflate(const uint8_t* start,
+   // Zlib treats this pointer as const, so this cast is safe.
+   stream_.next_in = const_cast<uint8_t*>(start);
+ 
++  // enqueue() may execute JavaScript which may invalidate the input buffer. So
++  // accumulate all the output before calling enqueue().
++  HeapVector<Member<DOMUint8Array>, 1u> buffers;
++
+   do {
+     stream_.avail_out = out_buffer_.size();
+     stream_.next_out = out_buffer_.data();
+@@ -120,16 +124,21 @@ void DeflateTransformer::Deflate(const uint8_t* start,
+ 
+     wtf_size_t bytes = out_buffer_.size() - stream_.avail_out;
+     if (bytes) {
+-      controller->enqueue(
+-          script_state_,
+-          ScriptValue::From(script_state_,
+-                            DOMUint8Array::Create(out_buffer_.data(), bytes)),
+-          exception_state);
+-      if (exception_state.HadException()) {
+-        return;
+-      }
++      buffers.push_back(DOMUint8Array::Create(out_buffer_.data(), bytes));
+     }
+   } while (stream_.avail_out == 0);
++
++  DCHECK_EQ(stream_.avail_in, 0u);
++
++  // JavaScript may be executed inside this loop, however it is safe because
++  // |buffers| is a local variable that JavaScript cannot modify.
++  for (DOMUint8Array* buffer : buffers) {
++    controller->enqueue(script_state_, ScriptValue::From(script_state_, buffer),
++                        exception_state);
++    if (exception_state.HadException()) {
++      return;
++    }
++  }
+ }
+ 
+ void DeflateTransformer::Trace(Visitor* visitor) const {
+diff --git a/third_party/blink/renderer/modules/compression/inflate_transformer.cc b/third_party/blink/renderer/modules/compression/inflate_transformer.cc
+index f348a5086e4254bc972dd321109d9fbf676f1d5e..29667b5752250466cd71542ab8868d6e14961e81 100644
+--- a/third_party/blink/renderer/modules/compression/inflate_transformer.cc
++++ b/third_party/blink/renderer/modules/compression/inflate_transformer.cc
+@@ -20,6 +20,7 @@
+ #include "third_party/blink/renderer/platform/bindings/exception_state.h"
+ #include "third_party/blink/renderer/platform/bindings/to_v8.h"
+ #include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
++#include "third_party/blink/renderer/platform/wtf/vector.h"
+ #include "v8/include/v8.h"
+ 
+ namespace blink {
+@@ -93,11 +94,15 @@ ScriptPromise InflateTransformer::Flush(
+     TransformStreamDefaultController* controller,
+     ExceptionState& exception_state) {
+   DCHECK(!was_flush_called_);
++  was_flush_called_ = true;
+   Inflate(nullptr, 0u, IsFinished(true), controller, exception_state);
+   inflateEnd(&stream_);
+-  was_flush_called_ = true;
+   out_buffer_.clear();
+ 
++  if (exception_state.HadException()) {
++    return ScriptPromise();
++  }
++
+   if (!reached_end_) {
+     exception_state.ThrowTypeError("Compressed input was truncated.");
+   }
+@@ -121,12 +126,22 @@ void InflateTransformer::Inflate(const uint8_t* start,
+   // Zlib treats this pointer as const, so this cast is safe.
+   stream_.next_in = const_cast<uint8_t*>(start);
+ 
++  // enqueue() may execute JavaScript which may invalidate the input buffer. So
++  // accumulate all the output before calling enqueue().
++  HeapVector<Member<DOMUint8Array>, 1u> buffers;
++
+   do {
+     stream_.avail_out = out_buffer_.size();
+     stream_.next_out = out_buffer_.data();
+     const int err = inflate(&stream_, finished ? Z_FINISH : Z_NO_FLUSH);
+     if (err != Z_OK && err != Z_STREAM_END && err != Z_BUF_ERROR) {
+       DCHECK_NE(err, Z_STREAM_ERROR);
++
++      EnqueueBuffers(controller, std::move(buffers), exception_state);
++      if (exception_state.HadException()) {
++        return;
++      }
++
+       if (err == Z_DATA_ERROR) {
+         exception_state.ThrowTypeError(
+             String("The compressed data was not valid: ") + stream_.msg + ".");
+@@ -138,25 +153,44 @@ void InflateTransformer::Inflate(const uint8_t* start,
+ 
+     wtf_size_t bytes = out_buffer_.size() - stream_.avail_out;
+     if (bytes) {
+-      controller->enqueue(
+-          script_state_,
+-          ScriptValue::From(script_state_,
+-                            DOMUint8Array::Create(out_buffer_.data(), bytes)),
+-          exception_state);
+-      if (exception_state.HadException()) {
+-        return;
+-      }
++      buffers.push_back(DOMUint8Array::Create(out_buffer_.data(), bytes));
+     }
+ 
+     if (err == Z_STREAM_END) {
+       reached_end_ = true;
+-      if (stream_.next_in < start + length) {
++      const bool junk_found = stream_.avail_in > 0;
++
++      EnqueueBuffers(controller, std::move(buffers), exception_state);
++      if (exception_state.HadException()) {
++        return;
++      }
++
++      if (junk_found) {
+         exception_state.ThrowTypeError(
+             "Junk found after end of compressed data.");
+       }
+       return;
+     }
+   } while (stream_.avail_out == 0);
++
++  DCHECK_EQ(stream_.avail_in, 0u);
++
++  EnqueueBuffers(controller, std::move(buffers), exception_state);
++}
++
++void InflateTransformer::EnqueueBuffers(
++    TransformStreamDefaultController* controller,
++    HeapVector<Member<DOMUint8Array>, 1u> buffers,
++    ExceptionState& exception_state) {
++  // JavaScript may be executed inside this loop, however it is safe because
++  // |buffers| is a local variable that JavaScript cannot modify.
++  for (DOMUint8Array* buffer : buffers) {
++    controller->enqueue(script_state_, ScriptValue::From(script_state_, buffer),
++                        exception_state);
++    if (exception_state.HadException()) {
++      return;
++    }
++  }
+ }
+ 
+ void InflateTransformer::Trace(Visitor* visitor) const {
+diff --git a/third_party/blink/renderer/modules/compression/inflate_transformer.h b/third_party/blink/renderer/modules/compression/inflate_transformer.h
+index 290e91808dfcc16ed7ff6ec9e6e42eb412dfc969..c5df437f1684e6ca1201d9b3d32dff19903a0b5e 100644
+--- a/third_party/blink/renderer/modules/compression/inflate_transformer.h
++++ b/third_party/blink/renderer/modules/compression/inflate_transformer.h
+@@ -41,6 +41,10 @@ class InflateTransformer final : public TransformStreamTransformer {
+                TransformStreamDefaultController*,
+                ExceptionState&);
+ 
++  void EnqueueBuffers(TransformStreamDefaultController*,
++                      HeapVector<Member<DOMUint8Array>, 1u> buffers,
++                      ExceptionState&);
++
+   Member<ScriptState> script_state_;
+ 
+   z_stream stream_;
+diff --git a/third_party/blink/web_tests/external/wpt/compression/compression-with-detach.tentative.any.js b/third_party/blink/web_tests/external/wpt/compression/compression-with-detach.tentative.any.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..786bba21c800ca9f067a6d033f0345a52bfbb218
+--- /dev/null
++++ b/third_party/blink/web_tests/external/wpt/compression/compression-with-detach.tentative.any.js
+@@ -0,0 +1,55 @@
++// META: global=window,worker
++// META: script=resources/concatenate-stream.js
++
++'use strict';
++
++const kInputLength = 500000;
++
++function createLargeRandomInput() {
++  const buffer = new ArrayBuffer(kInputLength);
++  // The getRandomValues API will only let us get 65536 bytes at a time, so call
++  // it multiple times.
++  const kChunkSize = 65536;
++  for (let offset = 0; offset < kInputLength; offset += kChunkSize) {
++    const length =
++        offset + kChunkSize > kInputLength ? kInputLength - offset : kChunkSize;
++    const view = new Uint8Array(buffer, offset, length);
++    crypto.getRandomValues(view);
++  }
++  return new Uint8Array(buffer);
++}
++
++function decompress(view) {
++  const ds = new DecompressionStream('deflate');
++  const writer = ds.writable.getWriter();
++  writer.write(view);
++  writer.close();
++  return concatenateStream(ds.readable);
++}
++
++promise_test(async () => {
++  const input = createLargeRandomInput();
++  const inputCopy = input.slice(0, input.byteLength);
++  const cs = new CompressionStream('deflate');
++  const writer = cs.writable.getWriter();
++  writer.write(input);
++  writer.close();
++  // Object.prototype.then will be looked up synchronously when the promise
++  // returned by read() is resolved.
++  Object.defineProperty(Object.prototype, 'then', {
++    get() {
++      // Cause input to become detached and unreferenced.
++      try {
++        postMessage(undefined, 'nowhere', [input.buffer]);
++      } catch (e) {
++        // It's already detached.
++      }
++    }
++  });
++  const output = await concatenateStream(cs.readable);
++  // Perform the comparison as strings since this is reasonably fast even when
++  // JITted JavaScript is running under an emulator.
++  assert_equals(
++      inputCopy.toString(), (await decompress(output)).toString(),
++      'decompressing the output should return the input');
++}, 'data should be correctly compressed even if input is detached partway');
+diff --git a/third_party/blink/web_tests/external/wpt/compression/decompression-with-detach.tentative.any.js b/third_party/blink/web_tests/external/wpt/compression/decompression-with-detach.tentative.any.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..a2f8bda09148f0d323022b1f93be78d83c4aa654
+--- /dev/null
++++ b/third_party/blink/web_tests/external/wpt/compression/decompression-with-detach.tentative.any.js
+@@ -0,0 +1,41 @@
++// META: global=window,worker
++// META: script=resources/concatenate-stream.js
++
++'use strict';
++
++const kInputLength = 1000000;
++
++async function createLargeCompressedInput() {
++  const cs = new CompressionStream('deflate');
++  // The input has to be large enough that it won't fit in a single chunk when
++  // decompressed.
++  const writer = cs.writable.getWriter();
++  writer.write(new Uint8Array(kInputLength));
++  writer.close();
++  return concatenateStream(cs.readable);
++}
++
++promise_test(async () => {
++  const input = await createLargeCompressedInput();
++  const ds = new DecompressionStream('deflate');
++  const writer = ds.writable.getWriter();
++  writer.write(input);
++  writer.close();
++  // Object.prototype.then will be looked up synchronously when the promise
++  // returned by read() is resolved.
++  Object.defineProperty(Object.prototype, 'then', {
++    get() {
++      // Cause input to become detached and unreferenced.
++      try {
++        postMessage(undefined, 'nowhere', [input.buffer]);
++      } catch (e) {
++        // It's already detached.
++      }
++    }
++  });
++  const output = await concatenateStream(ds.readable);
++  // If output successfully decompressed and gave the right length, we can be
++  // reasonably confident that no data corruption happened.
++  assert_equals(
++      output.byteLength, kInputLength, 'output should be the right length');
++}, 'data should be correctly decompressed even if input is detached partway');
+diff --git a/third_party/blink/web_tests/external/wpt/compression/resources/concatenate-stream.js b/third_party/blink/web_tests/external/wpt/compression/resources/concatenate-stream.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..a35bb1416e754893e331c0089d97720ae3b5af8e
+--- /dev/null
++++ b/third_party/blink/web_tests/external/wpt/compression/resources/concatenate-stream.js
+@@ -0,0 +1,25 @@
++'use strict';
++
++// Read all the chunks from a stream that returns BufferSource objects and
++// concatenate them into a single Uint8Array.
++async function concatenateStream(readableStream) {
++  const reader = readableStream.getReader();
++  let totalSize = 0;
++  const buffers = [];
++  while (true) {
++    const { value, done } = await reader.read();
++    if (done) {
++      break;
++    }
++    buffers.push(value);
++    totalSize += value.byteLength;
++  }
++  reader.releaseLock();
++  const concatenated = new Uint8Array(totalSize);
++  let offset = 0;
++  for (const buffer of buffers) {
++    concatenated.set(buffer, offset);
++    offset += buffer.byteLength;
++  }
++  return concatenated;
++}
diff --git a/patches/chromium/cherry-pick-5651fb858b75.patch b/patches/chromium/cherry-pick-5651fb858b75.patch
new file mode 100644
index 0000000000000..577b06a742817
--- /dev/null
+++ b/patches/chromium/cherry-pick-5651fb858b75.patch
@@ -0,0 +1,45 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Harald Alvestrand <hta@chromium.org>
+Date: Thu, 11 Mar 2021 18:54:23 +0000
+Subject: Iterate more carefully over DTLS transports at close
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Ensure that even if the set of DTLS transports is modified during
+callbacks called from close, the process will be well-defined.
+
+(cherry picked from commit 4f62c7bb28b0ce77b773a611c6ba02b361db1c85)
+
+Bug: chromium:1167357
+Change-Id: I712280e7382a647027912178156127831b437f75
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2639893
+Reviewed-by: Henrik Boström <hbos@chromium.org>
+Commit-Queue: Harald Alvestrand <hta@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#845122}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2752880
+Reviewed-by: Adrian Taylor <adetaylor@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4389@{#1521}
+Cr-Branched-From: 9251c5db2b6d5a59fe4eac7aafa5fed37c139bb7-refs/heads/master@{#843830}
+
+diff --git a/third_party/blink/renderer/modules/peerconnection/rtc_peer_connection.cc b/third_party/blink/renderer/modules/peerconnection/rtc_peer_connection.cc
+index 1503444ac2931a4205afe990f2e2dac11206de48..5d0b7e9cbe1f3459057b50879ab88d5a2ae12c20 100644
+--- a/third_party/blink/renderer/modules/peerconnection/rtc_peer_connection.cc
++++ b/third_party/blink/renderer/modules/peerconnection/rtc_peer_connection.cc
+@@ -3438,8 +3438,14 @@ void RTCPeerConnection::CloseInternal() {
+   if (sctp_transport_) {
+     sctp_transport_->Close();
+   }
+-  for (auto& dtls_transport_iter : dtls_transports_by_native_transport_) {
+-    dtls_transport_iter.value->Close();
++  // Since Close() can trigger JS-level callbacks, iterate over a copy
++  // of the transports list.
++  auto dtls_transports_copy = dtls_transports_by_native_transport_;
++  for (auto& dtls_transport_iter : dtls_transports_copy) {
++    // Since "value" is a WeakPtr, check if it's still valid.
++    if (dtls_transport_iter.value) {
++      dtls_transport_iter.value->Close();
++    }
+   }
+ 
+   feature_handle_for_scheduler_.reset();
diff --git a/patches/chromium/cherry-pick-5745eaf16077.patch b/patches/chromium/cherry-pick-5745eaf16077.patch
new file mode 100644
index 0000000000000..d2789fddf0efb
--- /dev/null
+++ b/patches/chromium/cherry-pick-5745eaf16077.patch
@@ -0,0 +1,89 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Asanka Herath <asanka@chromium.org>
+Date: Wed, 31 Mar 2021 16:33:46 +0000
+Subject: Remove unnecessary kCanvasReadback metrics.
+
+The identifiability metrics recorded under kCanvasReadback surface type
+used two conflicting sources as inputs: the CanvasRenderingContext
+type, and the paint-op digest.
+
+There are known collisions between resulting IdentifiableSurface values
+from the two sources, which makes it impossible to losslessly separate
+the two during analysis.
+
+While the fact that a canvas readback happened is interesting, it
+doesn't help determine the observed diversity of clients. Hence this
+change removes one of those sources: the CanvasRenderingContext type.
+
+M86 merge conflicts and resolution:
+* third_party/blink/renderer/core/offscreencanvas/offscreen_canvas.cc
+  M86 does not have the code removed in original CL.
+* third_party/blink/renderer/modules/canvas/canvas2d/canvas_rendering_context_2d.cc
+  third_party/blink/renderer/modules/webgl/webgl_rendering_context_base.cc
+  Removed corresponding code, kept old API.
+
+(cherry picked from commit 809231f0c9fdc6180b6a99cf067d0a32db053034)
+
+(cherry picked from commit b206b57b96985713ad167738f6839a8d32db78f2)
+
+Bug: 1161379, 1186641
+Change-Id: I770cb631c9c4afe4c36d1b129aaf61410db25d43
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2600386
+Commit-Queue: Asanka Herath <asanka@chromium.org>
+Reviewed-by: Caleb Raitto <caraitto@chromium.org>
+Reviewed-by: Kentaro Hara <haraken@chromium.org>
+Cr-Original-Original-Commit-Position: refs/heads/master@{#847480}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2785145
+Reviewed-by: Justin Novosad <junov@chromium.org>
+Reviewed-by: Juanmi Huertas <juanmihd@chromium.org>
+Reviewed-by: Asanka Herath <asanka@chromium.org>
+Commit-Queue: Yi Xu <yiyix@chromium.org>
+Cr-Original-Commit-Position: refs/branch-heads/4389@{#1599}
+Cr-Original-Branched-From: 9251c5db2b6d5a59fe4eac7aafa5fed37c139bb7-refs/heads/master@{#843830}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2794506
+Reviewed-by: Artem Sumaneev <asumaneev@google.com>
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Auto-Submit: Artem Sumaneev <asumaneev@google.com>
+Commit-Queue: Artem Sumaneev <asumaneev@google.com>
+Cr-Commit-Position: refs/branch-heads/4240@{#1586}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/third_party/blink/renderer/modules/canvas/canvas2d/canvas_rendering_context_2d.cc b/third_party/blink/renderer/modules/canvas/canvas2d/canvas_rendering_context_2d.cc
+index d4e0d5d0657e89f531d810f407a232248e0fca6f..95c891fc795cb0024e561ee522da79a82b8f14ce 100644
+--- a/third_party/blink/renderer/modules/canvas/canvas2d/canvas_rendering_context_2d.cc
++++ b/third_party/blink/renderer/modules/canvas/canvas2d/canvas_rendering_context_2d.cc
+@@ -680,12 +680,6 @@ ImageData* CanvasRenderingContext2D::getImageData(
+     int sw,
+     int sh,
+     ExceptionState& exception_state) {
+-  blink::IdentifiabilityMetricBuilder(ukm_source_id_)
+-      .Set(blink::IdentifiableSurface::FromTypeAndInput(
+-               blink::IdentifiableSurface::Type::kCanvasReadback,
+-               GetContextType()),
+-           0)
+-      .Record(ukm_recorder_);
+   return BaseRenderingContext2D::getImageData(sx, sy, sw, sh, exception_state);
+ }
+ 
+diff --git a/third_party/blink/renderer/modules/webgl/webgl_rendering_context_base.cc b/third_party/blink/renderer/modules/webgl/webgl_rendering_context_base.cc
+index d7445bf31a391bea3742327c34dc3eb46c72513b..32e945f0692b66de95735a3cd949943243ec5a7b 100644
+--- a/third_party/blink/renderer/modules/webgl/webgl_rendering_context_base.cc
++++ b/third_party/blink/renderer/modules/webgl/webgl_rendering_context_base.cc
+@@ -4508,17 +4508,6 @@ void WebGLRenderingContextBase::readPixels(
+     GLenum format,
+     GLenum type,
+     MaybeShared<DOMArrayBufferView> pixels) {
+-  if (IsUserInIdentifiabilityStudy()) {
+-    base::Optional<UkmParameters> ukm_params = ukm_parameters();
+-    if (ukm_params) {
+-      blink::IdentifiabilityMetricBuilder(ukm_params->source_id)
+-          .Set(blink::IdentifiableSurface::FromTypeAndInput(
+-                   blink::IdentifiableSurface::Type::kCanvasReadback,
+-                   GetContextType()),
+-               0)
+-          .Record(ukm_params->ukm_recorder);
+-    }
+-  }
+   ReadPixelsHelper(x, y, width, height, format, type, pixels.View(), 0);
+ }
+ 
diff --git a/patches/chromium/cherry-pick-5ffbb7ed173a.patch b/patches/chromium/cherry-pick-5ffbb7ed173a.patch
new file mode 100644
index 0000000000000..4a137f83d8bf8
--- /dev/null
+++ b/patches/chromium/cherry-pick-5ffbb7ed173a.patch
@@ -0,0 +1,37 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Darwin Huang <huangdarwin@chromium.org>
+Date: Fri, 13 Nov 2020 10:07:05 +0000
+Subject: Pepper: Ensure weak pointer is still valid before use (M86).
+
+TBR=bbudge@chromium.org
+(cherry picked from commit f24c213293752250db05e11c5e4b77adce002d38)
+
+Bug: 1146675
+Change-Id: I382dcb5c0b09a26e3c397ebef46947f626e2aef9
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2527065
+Reviewed-by: Bill Budge <bbudge@chromium.org>
+Commit-Queue: Darwin Huang <huangdarwin@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#825558}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2536757
+Reviewed-by: Darwin Huang <huangdarwin@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1448}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/content/browser/renderer_host/pepper/pepper_file_io_host.cc b/content/browser/renderer_host/pepper/pepper_file_io_host.cc
+index 28fba2fc56ddb7f42f3390db99999998ba912867..74bb7c539f8f05971b020e1d370098f5825e0ac2 100644
+--- a/content/browser/renderer_host/pepper/pepper_file_io_host.cc
++++ b/content/browser/renderer_host/pepper/pepper_file_io_host.cc
+@@ -248,7 +248,12 @@ void PepperFileIOHost::GotUIThreadStuffForInternalFileSystems(
+     return;
+   }
+ 
+-  DCHECK(file_system_host_.get());
++  if (!file_system_host_.get()) {
++    reply_context.params.set_result(PP_ERROR_FAILED);
++    SendOpenErrorReply(reply_context);
++    return;
++  }
++
+   DCHECK(file_system_host_->GetFileSystemOperationRunner());
+ 
+   file_system_host_->GetFileSystemOperationRunner()->OpenFile(
diff --git a/patches/chromium/cherry-pick-668cf831e912.patch b/patches/chromium/cherry-pick-668cf831e912.patch
new file mode 100644
index 0000000000000..e724f55a883e0
--- /dev/null
+++ b/patches/chromium/cherry-pick-668cf831e912.patch
@@ -0,0 +1,57 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Ken Rockot <rockot@google.com>
+Date: Tue, 23 Mar 2021 21:13:00 +0000
+Subject: Never fail in ReceiverSet::Add
+
+Because of how UniqueReceiverSet is implemented and used, it is
+dangerous to allow Add() to fail: callers reasonably assume that added
+objects are still alive immediately after the Add() call.
+
+This changes ReceiverId to a uint64 and simply CHECK-fails on
+insert collision.
+
+This fundamentally increases binary size of 32-bit builds, because
+a widely used 32-bit data type is expanding to 64 bits for the sake
+of security and stability. It is effectively unavoidable for now, and
+also just barely above the tolerable threshold.
+
+A follow-up (but less backwards-mergeable) change should be able to
+reduce binary size beyond this increase by consolidating shared
+code among ReceiverSet template instantiations.
+
+Fixed: 1185732
+Change-Id: I9acf6aaaa36e10fdce5aa49a890173caddc13c52
+Binary-Size: Unavoidable (see above)
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2778871
+Commit-Queue: Ken Rockot <rockot@google.com>
+Auto-Submit: Ken Rockot <rockot@google.com>
+Reviewed-by: Robert Sesek <rsesek@chromium.org>
+Cr-Commit-Position: refs/heads/master@{#865815}
+
+diff --git a/mojo/public/cpp/bindings/receiver_set.h b/mojo/public/cpp/bindings/receiver_set.h
+index 8d7d73231543c70b67913fdf735c1a16cc6170b1..56027d1f3e6393f739c3b51330137d54ae3fc0d2 100644
+--- a/mojo/public/cpp/bindings/receiver_set.h
++++ b/mojo/public/cpp/bindings/receiver_set.h
+@@ -24,7 +24,7 @@
+ 
+ namespace mojo {
+ 
+-using ReceiverId = size_t;
++using ReceiverId = uint64_t;
+ 
+ template <typename ReceiverType>
+ struct ReceiverSetTraits;
+@@ -359,11 +359,11 @@ class ReceiverSetBase {
+                      Context context,
+                      scoped_refptr<base::SequencedTaskRunner> task_runner) {
+     ReceiverId id = next_receiver_id_++;
+-    DCHECK_GE(next_receiver_id_, 0u);
+     auto entry =
+         std::make_unique<Entry>(std::move(impl), std::move(receiver), this, id,
+                                 std::move(context), std::move(task_runner));
+-    receivers_.insert(std::make_pair(id, std::move(entry)));
++    auto result = receivers_.insert(std::make_pair(id, std::move(entry)));
++    CHECK(result.second) << "ReceiverId overflow with collision";
+     return id;
+   }
+ 
diff --git a/patches/chromium/cherry-pick-6a6361c9f31c.patch b/patches/chromium/cherry-pick-6a6361c9f31c.patch
new file mode 100644
index 0000000000000..d761e3dfe0c03
--- /dev/null
+++ b/patches/chromium/cherry-pick-6a6361c9f31c.patch
@@ -0,0 +1,48 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Palak Agarwal <agpalak@chromium.org>
+Date: Wed, 31 Mar 2021 16:10:26 +0000
+Subject: WebContents bug fix: Device capture only if web contents is valid
+
+(cherry picked from commit a462be0883486431086c5f07cdafbd3607005a59)
+
+(cherry picked from commit e6f11cafde08981e47ba77e71abf99a271f7a042)
+
+Bug: 1181228
+Change-Id: I0a4c9718a3c0ccb52cefa4565b9787e6912554c9
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2752235
+Reviewed-by: Guido Urdaneta <guidou@chromium.org>
+Commit-Queue: Palak Agarwal <agpalak@chromium.org>
+Cr-Original-Original-Commit-Position: refs/heads/master@{#863828}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2782122
+Auto-Submit: Guido Urdaneta <guidou@chromium.org>
+Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
+Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
+Cr-Original-Commit-Position: refs/branch-heads/4389@{#1586}
+Cr-Original-Branched-From: 9251c5db2b6d5a59fe4eac7aafa5fed37c139bb7-refs/heads/master@{#843830}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2795101
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Reviewed-by: Artem Sumaneev <asumaneev@google.com>
+Auto-Submit: Artem Sumaneev <asumaneev@google.com>
+Commit-Queue: Guido Urdaneta <guidou@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1585}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/chrome/browser/media/webrtc/desktop_capture_access_handler.cc b/chrome/browser/media/webrtc/desktop_capture_access_handler.cc
+index e3f7e784f0339581a1c8a50301f8dbfd465abbfd..1f0811610e155715cc5cd72bbaa7e703728a1fe5 100644
+--- a/chrome/browser/media/webrtc/desktop_capture_access_handler.cc
++++ b/chrome/browser/media/webrtc/desktop_capture_access_handler.cc
+@@ -248,6 +248,14 @@ void DesktopCaptureAccessHandler::ProcessScreenCaptureAccessRequest(
+       const bool display_notification =
+           display_notification_ && ShouldDisplayNotification(extension);
+ 
++      if (!content::WebContents::FromRenderFrameHost(
++              content::RenderFrameHost::FromID(request.render_process_id,
++                                               request.render_frame_id))) {
++        std::move(callback).Run(
++            devices, blink::mojom::MediaStreamRequestResult::INVALID_STATE,
++            std::move(ui));
++        return;
++      }
+       ui = GetDevicesForDesktopCapture(
+           web_contents, &devices, screen_id,
+           blink::mojom::MediaStreamType::GUM_DESKTOP_VIDEO_CAPTURE,
diff --git a/patches/chromium/cherry-pick-6b84dc72351b.patch b/patches/chromium/cherry-pick-6b84dc72351b.patch
new file mode 100644
index 0000000000000..caec3db896ac6
--- /dev/null
+++ b/patches/chromium/cherry-pick-6b84dc72351b.patch
@@ -0,0 +1,82 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Brendon Tiszka <btiszka@gmail.com>
+Date: Tue, 20 Apr 2021 15:45:03 +0000
+Subject: M86-LTS: Ensure that BrowserContext is not used after it has been
+ freed
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Previously, it was possible for the BrowserContext to be destroyed
+before ReportAnchorElementMetricsOnClick attempted to access it.
+
+The fix uses the fact that NavigationPredictor extends
+WebContentsObserver and checks that web_contents is still alive
+before dereferencing BrowserContext. WebContents will always
+outlive BrowserContext.
+
+R=​lukasza@chromium.org, ryansturm@chromium.org
+
+(cherry picked from commit 7313a810ae0b1361cbe8453bc5496654dee24c76)
+
+Bug: 1197904
+Change-Id: Iee4f126e92670a84d57c7a4ec7d6f702fb975c7e
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2821639
+Reviewed-by: Ryan Sturm <ryansturm@chromium.org>
+Reviewed-by: Łukasz Anforowicz <lukasza@chromium.org>
+Commit-Queue: Łukasz Anforowicz <lukasza@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#872021}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2838328
+Owners-Override: Achuith Bhandarkar <achuith@chromium.org>
+Auto-Submit: Achuith Bhandarkar <achuith@chromium.org>
+Reviewed-by: Artem Sumaneev <asumaneev@google.com>
+Commit-Queue: Achuith Bhandarkar <achuith@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1613}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/AUTHORS b/AUTHORS
+index 3aa101a8d38a899fefcca149e4ac8e658188e590..cccc1f6d1407183806e78cb99e56abe7bd93de82 100644
+--- a/AUTHORS
++++ b/AUTHORS
+@@ -145,6 +145,7 @@ Bobby Powers <bobbypowers@gmail.com>
+ Branden Archer <bma4@zips.uakron.edu>
+ Brendan Kirby <brendan.kirby@imgtec.com>
+ Brendan Long <self@brendanlong.com>
++Brendon Tiszka <btiszka@gmail.com>
+ Brian Clifton <clifton@brave.com>
+ Brian G. Merrell <bgmerrell@gmail.com>
+ Brian Konzman, SJ <b.g.konzman@gmail.com>
+diff --git a/chrome/browser/navigation_predictor/navigation_predictor.cc b/chrome/browser/navigation_predictor/navigation_predictor.cc
+index 495bb165a30f2b1bf690e6d0724ad8f347a76d44..b62a97501565555493f4db82ce4a1ababff19eb6 100644
+--- a/chrome/browser/navigation_predictor/navigation_predictor.cc
++++ b/chrome/browser/navigation_predictor/navigation_predictor.cc
+@@ -506,6 +506,9 @@ void NavigationPredictor::ReportAnchorElementMetricsOnClick(
+   DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
+   DCHECK(base::FeatureList::IsEnabled(blink::features::kNavigationPredictor));
+ 
++  if (!web_contents())
++    return;
++
+   if (browser_context_->IsOffTheRecord())
+     return;
+ 
+@@ -652,6 +655,9 @@ void NavigationPredictor::ReportAnchorElementMetricsOnLoad(
+   // Each document should only report metrics once when page is loaded.
+   DCHECK(navigation_scores_map_.empty());
+ 
++  if (!web_contents())
++    return;
++
+   if (browser_context_->IsOffTheRecord())
+     return;
+ 
+@@ -897,6 +903,9 @@ void NavigationPredictor::MaybeTakeActionOnLoad(
+ }
+ 
+ void NavigationPredictor::MaybePrefetch() {
++  if (!web_contents())
++    return;
++
+   // If prefetches aren't allowed here, this URL has already
+   // been prefetched, or the current tab is hidden,
+   // we shouldn't prefetch again.
diff --git a/patches/chromium/cherry-pick-6e8856624cbb.patch b/patches/chromium/cherry-pick-6e8856624cbb.patch
new file mode 100644
index 0000000000000..5a89360074372
--- /dev/null
+++ b/patches/chromium/cherry-pick-6e8856624cbb.patch
@@ -0,0 +1,71 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Koji Ishii <kojii@chromium.org>
+Date: Thu, 11 Mar 2021 17:45:46 +0000
+Subject: Mark additional RootInlineBox dirty when culled inline box is removed
+
+When a |LayoutInline| is removed, |LineBoxList::
+DirtyLinesFromChangedChild| tries to mark affected
+|RootInlineBox| dirty.
+
+When the |LayoutInline| to be removed is culled, it tries to
+find the |RootInlineBox| from its previous siblings, then look
+for its previous and next |RootInlineBox|es.
+
+Occasionally, the next next line of the previous sibling is
+wrapped at the |LayoutInline|, and that its |LineBreakObj()|
+holds the reference to the |LayoutInline|. This patch marks
+such |RootInlineBox| dirty.
+
+(cherry picked from commit 2dbdabb28d647c8ee20cbe36e3c957e74aff663b)
+
+Bug: 1186287
+Change-Id: I8ca73ebb4f5e4f13e997662fffd803d6a74ef49a
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2748756
+Auto-Submit: Koji Ishii <kojii@chromium.org>
+Reviewed-by: Ian Kilpatrick <ikilpatrick@chromium.org>
+Commit-Queue: Ian Kilpatrick <ikilpatrick@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#861724}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2749769
+Commit-Queue: Krishna Govind <govind@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4389@{#1518}
+Cr-Branched-From: 9251c5db2b6d5a59fe4eac7aafa5fed37c139bb7-refs/heads/master@{#843830}
+
+diff --git a/third_party/blink/renderer/core/layout/line/line_box_list.cc b/third_party/blink/renderer/core/layout/line/line_box_list.cc
+index 9d9d861f00cb9784041796acb91604d64dab1cb7..ed929849f721fbae25fd8c1106c95e563aca289b 100644
+--- a/third_party/blink/renderer/core/layout/line/line_box_list.cc
++++ b/third_party/blink/renderer/core/layout/line/line_box_list.cc
+@@ -359,14 +359,32 @@ void LineBoxList::DirtyLinesFromChangedChild(LineLayoutItem container,
+     // findNextLineBreak. findNextLineBreak, despite the name, actually returns
+     // the first LayoutObject after the BR. <rdar://problem/3849947> "Typing
+     // after pasting line does not appear until after window resize."
+-    if (RootInlineBox* prev_root_box = box->PrevRootBox())
++    if (RootInlineBox* prev_root_box = box->PrevRootBox()) {
+       prev_root_box->MarkDirty();
++#if DCHECK_IS_ON()
++      for (; prev_root_box; prev_root_box = prev_root_box->PrevRootBox()) {
++        DCHECK(prev_root_box->IsDirty() ||
++               prev_root_box->LineBreakObj() != child);
++      }
++#endif
++    }
+     // If |child| or any of its immediately previous siblings with culled
+     // lineboxes is the object after a line-break in |box| or the linebox after
+     // it then that means |child| actually sits on the linebox after |box| (or
+     // is its line-break object) and so we need to dirty it as well.
+-    if (RootInlineBox* next_root_box = box->NextRootBox())
++    if (RootInlineBox* next_root_box = box->NextRootBox()) {
+       next_root_box->MarkDirty();
++
++      next_root_box = next_root_box->NextRootBox();
++      if (next_root_box && next_root_box->LineBreakObj() == child)
++        next_root_box->MarkDirty();
++#if DCHECK_IS_ON()
++      for (; next_root_box; next_root_box = next_root_box->NextRootBox()) {
++        DCHECK(next_root_box->IsDirty() ||
++               next_root_box->LineBreakObj() != child);
++      }
++#endif
++    }
+   }
+ }
+ 
diff --git a/patches/chromium/cherry-pick-76cb1cc32baa.patch b/patches/chromium/cherry-pick-76cb1cc32baa.patch
new file mode 100644
index 0000000000000..c3011770b1d68
--- /dev/null
+++ b/patches/chromium/cherry-pick-76cb1cc32baa.patch
@@ -0,0 +1,67 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Sergei Glazunov <glazunov@google.com>
+Date: Fri, 12 Feb 2021 16:37:12 +0000
+Subject: Use a copy for transferring non detachable buffers
+
+Currently, |DOMArrayBuffer::Transfer()| makes a copy, but still uses
+the original buffer for transferring, thus making it possible to share a
+regular ArrayBuffer (not SAB) with multiple threads.
+
+(cherry picked from commit 0d289da12075592372940a366ad565b9a13d57ce)
+
+Bug: 1177341
+Change-Id: Idb48deb1698fe555f32531bc04b55dd3e1fb0a06
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2690630
+Reviewed-by: Bill Budge <bbudge@chromium.org>
+Reviewed-by: Andreas Haas <ahaas@chromium.org>
+Reviewed-by: Daniel Cheng <dcheng@chromium.org>
+Commit-Queue: Sergei Glazunov <glazunov@google.com>
+Commit-Queue: Daniel Cheng <dcheng@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#853272}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2691251
+Reviewed-by: Krishna Govind <govind@chromium.org>
+Commit-Queue: Krishna Govind <govind@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4389@{#980}
+Cr-Branched-From: 9251c5db2b6d5a59fe4eac7aafa5fed37c139bb7-refs/heads/master@{#843830}
+
+diff --git a/third_party/blink/renderer/core/typed_arrays/dom_array_buffer.cc b/third_party/blink/renderer/core/typed_arrays/dom_array_buffer.cc
+index 17fcf0f9034d09a53376ebb380c98589d52de8f4..c456d15f2f5084d7592326e151c1a478bc2ac1fc 100644
+--- a/third_party/blink/renderer/core/typed_arrays/dom_array_buffer.cc
++++ b/third_party/blink/renderer/core/typed_arrays/dom_array_buffer.cc
+@@ -47,6 +47,13 @@ bool DOMArrayBuffer::Transfer(v8::Isolate* isolate,
+         DOMArrayBuffer::Create(Content()->Data(), ByteLengthAsSizeT());
+   }
+ 
++  return to_transfer->TransferDetachable(isolate, result);
++}
++
++bool DOMArrayBuffer::TransferDetachable(v8::Isolate* isolate,
++                                        ArrayBufferContents& result) {
++  DCHECK(IsDetachable(isolate));
++
+   if (IsDetached()) {
+     result.Detach();
+     return false;
+@@ -62,7 +69,7 @@ bool DOMArrayBuffer::Transfer(v8::Isolate* isolate,
+ 
+   Vector<v8::Local<v8::ArrayBuffer>, 4> buffer_handles;
+   v8::HandleScope handle_scope(isolate);
+-  AccumulateArrayBuffersForAllWorlds(isolate, to_transfer, buffer_handles);
++  AccumulateArrayBuffersForAllWorlds(isolate, this, buffer_handles);
+ 
+   for (const auto& buffer_handle : buffer_handles)
+     buffer_handle->Detach();
+diff --git a/third_party/blink/renderer/core/typed_arrays/dom_array_buffer.h b/third_party/blink/renderer/core/typed_arrays/dom_array_buffer.h
+index 00ba385dafcfd476805e39e4c138cdac8f071ef6..e9a85d38d4d46d26a41cf4d394a92d1a7b511c02 100644
+--- a/third_party/blink/renderer/core/typed_arrays/dom_array_buffer.h
++++ b/third_party/blink/renderer/core/typed_arrays/dom_array_buffer.h
+@@ -78,6 +78,9 @@ class CORE_EXPORT DOMArrayBuffer final : public DOMArrayBufferBase {
+ 
+   v8::Local<v8::Value> Wrap(v8::Isolate*,
+                             v8::Local<v8::Object> creation_context) override;
++
++ private:
++  bool TransferDetachable(v8::Isolate*, ArrayBufferContents& result);
+ };
+ 
+ }  // namespace blink
diff --git a/patches/chromium/cherry-pick-79440c3a0675.patch b/patches/chromium/cherry-pick-79440c3a0675.patch
new file mode 100644
index 0000000000000..f31bc9a56717b
--- /dev/null
+++ b/patches/chromium/cherry-pick-79440c3a0675.patch
@@ -0,0 +1,197 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Hongchan Choi <hongchan@chromium.org>
+Date: Tue, 8 Dec 2020 01:42:34 +0000
+Subject: Fail gracefully if |parameter| object has an invalid array topology
+
+AudioWorkletProcessor::CopyParamValueMapToObject() assumed the array
+topology is always valid (DCHECK), but if the user code actively mangles
+the parameter descriptor getter the array to return invalid content
+this assumption becomes invalid.
+
+The fix is to fail gracefully when the object type or the array content
+is not correct.
+
+Bug: 1151069
+Test: The repro case does not reproduce any more after 1 hour run.
+Change-Id: I3f8decd3721e9b00ba201e2f76751e4bc941e05d
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2569788
+Reviewed-by: Raymond Toy <rtoy@chromium.org>
+Commit-Queue: Hongchan Choi <hongchan@chromium.org>
+Cr-Commit-Position: refs/heads/master@{#834503}
+
+diff --git a/third_party/blink/renderer/modules/webaudio/audio_worklet_processor.cc b/third_party/blink/renderer/modules/webaudio/audio_worklet_processor.cc
+index 9ac9bcc91967e2228516e6cdc7065b83316c25e7..3518f24ea248862ea9d96ab8e6bbfecfe001fb33 100644
+--- a/third_party/blink/renderer/modules/webaudio/audio_worklet_processor.cc
++++ b/third_party/blink/renderer/modules/webaudio/audio_worklet_processor.cc
+@@ -107,8 +107,13 @@ bool AudioWorkletProcessor::Process(
+   DCHECK(!params_.IsEmpty());
+   DCHECK(params_.NewLocal(isolate)->IsObject());
+ 
+-  // Copies |param_value_map| to the internal |params_| object;
+-  CopyParamValueMapToObject(isolate, context, *param_value_map, params_);
++  // Copies |param_value_map| to the internal |params_| object. This operation
++  // could fail if the getter of parameterDescriptors is overridden by user code
++  // and returns incompatible data. (crbug.com/1151069)
++  if (!CopyParamValueMapToObject(isolate, context, *param_value_map, params_)) {
++    SetErrorState(AudioWorkletProcessorErrorState::kProcessError);
++    return false;
++  }
+ 
+   // Performs the user-defined AudioWorkletProcessor.process() function.
+   v8::TryCatch try_catch(isolate);
+@@ -444,6 +449,7 @@ bool AudioWorkletProcessor::CloneParamValueMapToObject(
+         break;
+       }
+     }
++    DCHECK(array_size == 1 || array_size == param_float_array->size());
+ 
+     v8::Local<v8::ArrayBuffer> array_buffer =
+         v8::ArrayBuffer::New(isolate, array_size * sizeof(float));
+@@ -482,18 +488,23 @@ bool AudioWorkletProcessor::CopyParamValueMapToObject(
+ 
+     v8::Local<v8::Value> param_array_value;
+     if (!params_object->Get(context, V8String(isolate, param_name))
+-                      .ToLocal(&param_array_value)) {
++                      .ToLocal(&param_array_value) ||
++        !param_array_value->IsFloat32Array()) {
+       return false;
+     }
+-    DCHECK(param_array_value->IsFloat32Array());
++
+     v8::Local<v8::Float32Array> float32_array =
+         param_array_value.As<v8::Float32Array>();
++    size_t array_length = float32_array->Length();
++
++    // The |float32_array| is neither 1 nor 128 frames, or the array buffer is
++    // trasnferred/detached, do not proceed.
++    if ((array_length != 1 && array_length != param_array->size()) ||
++        float32_array->Buffer()->ByteLength() == 0)
++      return false;
+ 
+-    // The Float32Array is either 1 or 128 frames, but it always should be
+-    // less than equal to the size of the given AudioFloatArray.
+-    DCHECK_LE(float32_array->Length(), param_array->size());
+     memcpy(float32_array->Buffer()->GetContents().Data(), param_array->Data(),
+-           float32_array->Length() * sizeof(float));
++           array_length * sizeof(float));
+   }
+ 
+   return true;
+diff --git a/third_party/blink/web_tests/external/wpt/webaudio/the-audio-api/the-audioworklet-interface/audioworkletprocessor-param-getter-overridden.https.html b/third_party/blink/web_tests/external/wpt/webaudio/the-audio-api/the-audioworklet-interface/audioworkletprocessor-param-getter-overridden.https.html
+new file mode 100644
+index 0000000000000000000000000000000000000000..e3fb6e533df8ccaa88564f836239e0c9e9c1d5e4
+--- /dev/null
++++ b/third_party/blink/web_tests/external/wpt/webaudio/the-audio-api/the-audioworklet-interface/audioworkletprocessor-param-getter-overridden.https.html
+@@ -0,0 +1,59 @@
++<!DOCTYPE html>
++<html>
++  <head>
++    <title>
++      Test if AudioWorkletProcessor with invalid parameters array getter
++    </title>
++    <script src="/resources/testharness.js"></script>
++    <script src="/resources/testharnessreport.js"></script>
++    <script src="/webaudio/resources/audit.js"></script>
++  </head>
++  <body>
++    <script id="layout-test-code">
++      let audit = Audit.createTaskRunner();
++
++      // Arbitrarily determined. Any numbers should work.
++      let sampleRate = 16000;
++      let renderLength = 1280;
++      let context;
++      let filePath = 'processors/invalid-param-array-processor.js';
++
++      audit.define('Initializing AudioWorklet and Context', async (task) => {
++        context = new OfflineAudioContext(1, renderLength, sampleRate);
++        await context.audioWorklet.addModule(filePath);
++        task.done();
++      });
++
++      audit.define('Verifying AudioParam in AudioWorkletNode',
++          async (task, should) => {
++            let buffer = context.createBuffer(1, 2, context.sampleRate);
++            buffer.getChannelData(0)[0] = 1;
++
++            let source = new AudioBufferSourceNode(context);
++            source.buffer = buffer;
++            source.loop = true;
++            source.start();
++
++            let workletNode1 =
++                new AudioWorkletNode(context, 'invalid-param-array-1');
++            let workletNode2 =
++                new AudioWorkletNode(context, 'invalid-param-array-2');
++            workletNode1.connect(workletNode2).connect(context.destination);
++
++            // Manually invoke the param getter.
++            source.connect(workletNode2.parameters.get('invalidParam'));
++
++            const renderedBuffer = await context.startRendering();
++
++            // |workletNode2| should be no-op after the parameter getter is
++            // invoked. Therefore, the rendered result should be silent.
++            should(renderedBuffer.getChannelData(0), 'The rendered buffer')
++                .beConstantValueOf(0);
++            task.done();
++          }
++      );
++
++      audit.run();
++    </script>
++  </body>
++</html>
+diff --git a/third_party/blink/web_tests/external/wpt/webaudio/the-audio-api/the-audioworklet-interface/processors/invalid-param-array-processor.js b/third_party/blink/web_tests/external/wpt/webaudio/the-audio-api/the-audioworklet-interface/processors/invalid-param-array-processor.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..e4a5dc39ba16b282e254eba84e8038ae59a6471d
+--- /dev/null
++++ b/third_party/blink/web_tests/external/wpt/webaudio/the-audio-api/the-audioworklet-interface/processors/invalid-param-array-processor.js
+@@ -0,0 +1,47 @@
++/**
++ * @class InvalidParamArrayProcessor
++ * @extends AudioWorkletProcessor
++ *
++ * This processor intentionally returns an array with an invalid size when the
++ * processor's getter is queried.
++ */
++let singleton = undefined;
++let secondFetch = false;
++let useDescriptor = false;
++let processCounter = 0;
++
++class InvalidParamArrayProcessor extends AudioWorkletProcessor {
++  static get parameterDescriptors() {
++    if (useDescriptor)
++      return [{name: 'invalidParam'}];
++    useDescriptor = true;
++    return [];
++  }
++
++  constructor() {
++    super();
++    if (singleton === undefined)
++      singleton = this;
++    return singleton;
++  }
++
++  process(inputs, outputs, parameters) {
++    const output = outputs[0];
++    for (let channel = 0; channel < output.length; ++channel)
++      output[channel].fill(1);
++    return false;
++  }
++}
++
++// This overridden getter is invoked under the hood before process() gets
++// called. After this gets called, process() method above will be invalidated,
++// and mark the worklet node non-functional. (i.e. in an error state)
++Object.defineProperty(Object.prototype, 'invalidParam', {'get': () => {
++  if (secondFetch)
++    return new Float32Array(256);
++  secondFetch = true;
++  return new Float32Array(128);
++}});
++
++registerProcessor('invalid-param-array-1', InvalidParamArrayProcessor);
++registerProcessor('invalid-param-array-2', InvalidParamArrayProcessor);
diff --git a/patches/chromium/cherry-pick-7dd3b1c86795.patch b/patches/chromium/cherry-pick-7dd3b1c86795.patch
new file mode 100644
index 0000000000000..ff5e93109ae42
--- /dev/null
+++ b/patches/chromium/cherry-pick-7dd3b1c86795.patch
@@ -0,0 +1,40 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Wez <wez@chromium.org>
+Date: Thu, 15 Apr 2021 18:24:27 +0000
+Subject: Handle window deletion during HandleDisplayChange.
+
+In principle there is no reason why the HWNDMessageHandler shouldn't be
+deleted by a HandleDisplayChange() call out to the delegate, e.g. if the
+change results in a change in window layout.
+
+(cherry picked from commit 299155e5e37a77670b7969771e09e9a16b1f5612)
+
+Bug: 1192552
+Change-Id: I9fca35ff32e7037c6492f4cee7069e272059b920
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2804382
+Auto-Submit: Wez <wez@chromium.org>
+Commit-Queue: Scott Violet <sky@chromium.org>
+Reviewed-by: Scott Violet <sky@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#869603}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2826321
+Cr-Commit-Position: refs/branch-heads/4430@{#1291}
+Cr-Branched-From: e5ce7dc4f7518237b3d9bb93cccca35d25216cbe-refs/heads/master@{#857950}
+
+diff --git a/ui/views/win/hwnd_message_handler.cc b/ui/views/win/hwnd_message_handler.cc
+index f6e9f97e47b44fa47e8e6c237be371754a5204bd..39518ac65d091bc52a26cf84b89fa350459e874b 100644
+--- a/ui/views/win/hwnd_message_handler.cc
++++ b/ui/views/win/hwnd_message_handler.cc
+@@ -1670,7 +1670,13 @@ void HWNDMessageHandler::OnDisplayChange(UINT bits_per_pixel,
+                                          const gfx::Size& screen_size) {
+   TRACE_EVENT0("ui", "HWNDMessageHandler::OnDisplayChange");
+ 
++  base::WeakPtr<HWNDMessageHandler> ref(msg_handler_weak_factory_.GetWeakPtr());
+   delegate_->HandleDisplayChange();
++
++  // HandleDisplayChange() may result in |this| being deleted.
++  if (!ref)
++    return;
++
+   // Force a WM_NCCALCSIZE to occur to ensure that we handle auto hide
+   // taskbars correctly.
+   SendFrameChanged();
diff --git a/patches/chromium/cherry-pick-7e0e52df283c.patch b/patches/chromium/cherry-pick-7e0e52df283c.patch
new file mode 100644
index 0000000000000..e4b53046f7409
--- /dev/null
+++ b/patches/chromium/cherry-pick-7e0e52df283c.patch
@@ -0,0 +1,54 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Marijn Kruisselbrink <mek@chromium.org>
+Date: Tue, 23 Feb 2021 22:17:17 +0000
+Subject: Don't store BlobStorageLimits as a reference in transport strategy.
+
+Rather than storing a const reference to something of unclear lifetime,
+just make a copy. We could just copy the specific limits we need, but
+there shouldn't be many TransportStrategy instances alive at the same
+time anyway, so the cost of duplicating shouldn't be too high.
+
+(cherry picked from commit 9a10c68a381d78088532953aa8e0de0a5ff47316)
+
+(cherry picked from commit 7b51cb5e4e2c6cf9dcf19bd9d7599735efd48110)
+
+Bug: 1180871
+Change-Id: Ie1e31728b18f02c5d35df0ac0f285eb8f70cb268
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2713912
+Reviewed-by: Olivier Yiptong <oyiptong@chromium.org>
+Reviewed-by: Darwin Huang <huangdarwin@chromium.org>
+Reviewed-by: Victor Costan <pwnall@chromium.org>
+Commit-Queue: Marijn Kruisselbrink <mek@chromium.org>
+Cr-Original-Original-Commit-Position: refs/heads/master@{#856503}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2713891
+Reviewed-by: Krishna Govind <govind@chromium.org>
+Reviewed-by: Srinivas Sista <srinivassista@chromium.org>
+Cr-Original-Commit-Position: refs/branch-heads/4425@{#2}
+Cr-Original-Branched-From: 4a7d24ec28ccb96c5a1cfd7b4b40b17070f2c396-refs/heads/master@{#856252}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2713958
+Commit-Queue: Krishna Govind <govind@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4389@{#1327}
+Cr-Branched-From: 9251c5db2b6d5a59fe4eac7aafa5fed37c139bb7-refs/heads/master@{#843830}
+
+diff --git a/storage/browser/blob/blob_transport_strategy.cc b/storage/browser/blob/blob_transport_strategy.cc
+index eb66014792246254db1c825b61bd18e3190970de..5ae41639f149f8ff3ead9633d3aa834ac05a8e5f 100644
+--- a/storage/browser/blob/blob_transport_strategy.cc
++++ b/storage/browser/blob/blob_transport_strategy.cc
+@@ -239,7 +239,7 @@ class DataPipeTransportStrategy : public BlobTransportStrategy {
+     }
+   }
+ 
+-  const BlobStorageLimits& limits_;
++  const BlobStorageLimits limits_;
+   base::circular_deque<base::OnceClosure> requests_;
+ 
+   mojo::ScopedDataPipeConsumerHandle consumer_handle_;
+@@ -336,7 +336,7 @@ class FileTransportStrategy : public BlobTransportStrategy {
+       std::move(result_callback_).Run(BlobStatus::DONE);
+   }
+ 
+-  const BlobStorageLimits& limits_;
++  const BlobStorageLimits limits_;
+ 
+   // State used to assign bytes elements to individual files.
+   // The index of the first file that still has available space.
diff --git a/patches/chromium/cherry-pick-861253f1de98.patch b/patches/chromium/cherry-pick-861253f1de98.patch
new file mode 100644
index 0000000000000..24fa43af3c2e8
--- /dev/null
+++ b/patches/chromium/cherry-pick-861253f1de98.patch
@@ -0,0 +1,78 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Adam Rice <ricea@chromium.org>
+Date: Sat, 5 Dec 2020 03:19:09 +0000
+Subject: Update the restricted port list
+
+Add ports 69, 137, 161, 554, 1719, 1720, 1723, 6566 to the restricted
+ports list to match Firefox. See
+https://hg.mozilla.org/mozilla-central/file/tip/netwerk/base/nsIOService.cpp.
+
+Leave out port 10080 for now as it seems likely to cause compatibility
+problems.
+
+BUG=1148309
+
+Change-Id: I16f9a61068dbe35334fd5ca2bf55b3ab0287df74
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2562905
+Reviewed-by: David Schinazi <dschinazi@chromium.org>
+Commit-Queue: Adam Rice <ricea@chromium.org>
+Cr-Commit-Position: refs/heads/master@{#832169}
+(cherry picked from commit c36c5078c41bd1a9e2455d747d69ac1703d977d3)
+
+TBR=ricea@chromium.org
+
+Change-Id: I9cc989e46ac63b3c656eb2eaed825add9b8346f8
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2574877
+Reviewed-by: Adam Rice <ricea@chromium.org>
+Commit-Queue: Adam Rice <ricea@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4324@{#611}
+Cr-Branched-From: c73b5a651d37a6c4d0b8e3262cc4015a5579c6c8-refs/heads/master@{#827102}
+
+diff --git a/net/base/port_util.cc b/net/base/port_util.cc
+index 72af86dd6acf2db65a14b2f1bb2e3a241a1d043d..12bfd9a36a0e8e9331420c597faf670477100e47 100644
+--- a/net/base/port_util.cc
++++ b/net/base/port_util.cc
+@@ -37,6 +37,7 @@ const int kRestrictedPorts[] = {
+     42,    // name
+     43,    // nicname
+     53,    // domain
++    69,    // tftp
+     77,    // priv-rjs
+     79,    // finger
+     87,    // ttylink
+@@ -54,8 +55,10 @@ const int kRestrictedPorts[] = {
+     119,   // nntp
+     123,   // NTP
+     135,   // loc-srv /epmap
++    137,   // netbios
+     139,   // netbios
+     143,   // imap2
++    161,   // snmp
+     179,   // BGP
+     389,   // ldap
+     427,   // SLP (Also used by Apple Filing Protocol)
+@@ -70,6 +73,7 @@ const int kRestrictedPorts[] = {
+     532,   // netnews
+     540,   // uucp
+     548,   // AFP (Apple Filing Protocol)
++    554,   // rtsp
+     556,   // remotefs
+     563,   // nntp+ssl
+     587,   // smtp (rfc6409)
+@@ -77,12 +81,16 @@ const int kRestrictedPorts[] = {
+     636,   // ldap+ssl
+     993,   // ldap+ssl
+     995,   // pop3+ssl
++    1719,  // h323gatestat
++    1720,  // h323hostcall
++    1723,  // pptp
+     2049,  // nfs
+     3659,  // apple-sasl / PasswordServer
+     4045,  // lockd
+     5060,  // sip
+     5061,  // sips
+     6000,  // X11
++    6566,  // sane-port
+     6665,  // Alternate IRC [Apple addition]
+     6666,  // Alternate IRC [Apple addition]
+     6667,  // Standard IRC [Apple addition]
diff --git a/patches/chromium/cherry-pick-8629cd7f8af3.patch b/patches/chromium/cherry-pick-8629cd7f8af3.patch
new file mode 100644
index 0000000000000..a5c9713e6f19e
--- /dev/null
+++ b/patches/chromium/cherry-pick-8629cd7f8af3.patch
@@ -0,0 +1,291 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Raymond Toy <rtoy@chromium.org>
+Date: Tue, 29 Sep 2020 17:56:16 +0000
+Subject: Add mutex for allowing the graph to be pulled
+
+Basically add a mutex to protect access to
+allow_pulling_audio_graph_.  The main thread waits until it has the
+lock before setting this.  This prevents the main thread from deleting
+things while the audio thread is pulling on the graph.
+
+A try lock is used so as not to block the audio thread if it can't get
+lock.
+
+This is applied to both real time and offline contexts which required
+moving the original real-time-only implementation to
+audio_destination_node so we can use the same methods for the offline
+context.
+
+Tested the repro case from 1125635, and the issue does not reproduce.
+We're assuming this will fix 1115901, but I've not been able to
+reproduce that locally.
+
+(cherry picked from commit 6785a406fd652f7a2f40933620ef4c979643c56b)
+
+Bug: 1125635, 1115901
+Change-Id: I1037d8c44225c6dcc8fe906c29a5a86740a15e1d
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2410743
+Reviewed-by: Hongchan Choi <hongchan@chromium.org>
+Commit-Queue: Raymond Toy <rtoy@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#809393}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2436324
+Reviewed-by: Raymond Toy <rtoy@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1083}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/third_party/blink/renderer/modules/webaudio/audio_destination_node.cc b/third_party/blink/renderer/modules/webaudio/audio_destination_node.cc
+index c85f6d2e26f2e34b8633c29754028afbd8f2cbb9..9b1a5ec495f8f3614e8e77fdeaf9eaa159b3e3ae 100644
+--- a/third_party/blink/renderer/modules/webaudio/audio_destination_node.cc
++++ b/third_party/blink/renderer/modules/webaudio/audio_destination_node.cc
+@@ -30,7 +30,8 @@
+ namespace blink {
+ 
+ AudioDestinationHandler::AudioDestinationHandler(AudioNode& node)
+-    : AudioHandler(kNodeTypeDestination, node, 0) {
++    : AudioHandler(kNodeTypeDestination, node, 0),
++      allow_pulling_audio_graph_(false) {
+   AddInput();
+ }
+ 
+diff --git a/third_party/blink/renderer/modules/webaudio/audio_destination_node.h b/third_party/blink/renderer/modules/webaudio/audio_destination_node.h
+index c35722c9296b6c98832444799124334d382225df..2d1a60c5bb5f3b6c75998b7ecbce1c94f3d68a2d 100644
+--- a/third_party/blink/renderer/modules/webaudio/audio_destination_node.h
++++ b/third_party/blink/renderer/modules/webaudio/audio_destination_node.h
+@@ -71,6 +71,53 @@ class AudioDestinationHandler : public AudioHandler {
+     return is_execution_context_destroyed_;
+   }
+ 
++  // Should only be called from
++  // RealtimeAudioDestinationHandler::StartPlatformDestination for a realtime
++  // context or OfflineAudioDestinationHandler::StartRendering for an offline
++  // context---basically wherever the context has started rendering.
++  // TODO(crbug.com/1128121): Consider removing this if possible
++  void EnablePullingAudioGraph() {
++    MutexLocker lock(allow_pulling_audio_graph_mutex_);
++    allow_pulling_audio_graph_.store(true, std::memory_order_release);
++  }
++
++  // Should only be called from
++  // RealtimeAudioDestinationHandler::StopPlatformDestination for a realtime
++  // context or from OfflineAudioDestinationHandler::Uninitialize for an offline
++  // context---basically whenever the context is being stopped.
++  // TODO(crbug.com/1128121): Consider removing this if possible
++  void DisablePullingAudioGraph() {
++    MutexLocker lock(allow_pulling_audio_graph_mutex_);
++    allow_pulling_audio_graph_.store(false, std::memory_order_release);
++  }
++
++  // TODO(crbug.com/1128121): Consider removing this if possible
++  bool IsPullingAudioGraphAllowed() const {
++    return allow_pulling_audio_graph_.load(std::memory_order_acquire);
++  }
++
++  // If true, the audio graph will be pulled to get new data.  Otherwise, the
++  // graph is not pulled, even if the audio thread is still running and
++  // requesting data.
++  //
++  // For an AudioContext, this MUST be modified only in
++  // RealtimeAudioDestinationHandler::StartPlatformDestination (via
++  // AudioDestinationHandler::EnablePullingAudioGraph) or
++  // RealtimeAudioDestinationHandler::StopPlatformDestination (via
++  // AudioDestinationHandler::DisablePullingAudioGraph), including destroying
++  // the the realtime context.
++  //
++  // For an OfflineAudioContext, this MUST be modified only when the the context
++  // is started or it has stopped rendering, including destroying the offline
++  // context.
++
++  // TODO(crbug.com/1128121): Consider removing this if possible
++  std::atomic_bool allow_pulling_audio_graph_;
++
++  // Protects allow_pulling_audio_graph_ from race conditions.  Must use try
++  // lock on the audio thread.
++  mutable Mutex allow_pulling_audio_graph_mutex_;
++
+  protected:
+   void AdvanceCurrentSampleFrame(size_t number_of_frames) {
+     current_sample_frame_.fetch_add(number_of_frames,
+diff --git a/third_party/blink/renderer/modules/webaudio/offline_audio_destination_node.cc b/third_party/blink/renderer/modules/webaudio/offline_audio_destination_node.cc
+index 73494d0842432b466625a99f0114256fb6ab2025..4160bf9099a7ec06cfc075cb2d27d3392ebf3d12 100644
+--- a/third_party/blink/renderer/modules/webaudio/offline_audio_destination_node.cc
++++ b/third_party/blink/renderer/modules/webaudio/offline_audio_destination_node.cc
+@@ -90,6 +90,7 @@ void OfflineAudioDestinationHandler::Uninitialize() {
+   if (!IsInitialized())
+     return;
+ 
++  DisablePullingAudioGraph();
+   AudioHandler::Uninitialize();
+ }
+ 
+@@ -109,6 +110,7 @@ void OfflineAudioDestinationHandler::StartRendering() {
+   // Rendering was not started. Starting now.
+   if (!is_rendering_started_) {
+     is_rendering_started_ = true;
++    EnablePullingAudioGraph();
+     PostCrossThreadTask(
+         *render_thread_task_runner_, FROM_HERE,
+         CrossThreadBindOnce(
+@@ -290,20 +292,34 @@ bool OfflineAudioDestinationHandler::RenderIfNotSuspended(
+ 
+   DCHECK_GE(NumberOfInputs(), 1u);
+ 
+-  // This will cause the node(s) connected to us to process, which in turn will
+-  // pull on their input(s), all the way backwards through the rendering graph.
+-  scoped_refptr<AudioBus> rendered_bus =
+-      Input(0).Pull(destination_bus, number_of_frames);
++  {
++    // The entire block that relies on |IsPullingAudioGraphAllowed| needs
++    // locking to prevent pulling audio graph being disallowed (i.e. a
++    // destruction started) in the middle of processing
++    MutexTryLocker try_locker(allow_pulling_audio_graph_mutex_);
++
++    if (IsPullingAudioGraphAllowed() && try_locker.Locked()) {
++      // This will cause the node(s) connected to us to process, which in turn
++      // will pull on their input(s), all the way backwards through the
++      // rendering graph.
++      scoped_refptr<AudioBus> rendered_bus =
++          Input(0).Pull(destination_bus, number_of_frames);
++
++      if (!rendered_bus) {
++        destination_bus->Zero();
++      } else if (rendered_bus != destination_bus) {
++        // in-place processing was not possible - so copy
++        destination_bus->CopyFrom(*rendered_bus);
++      }
+ 
+-  if (!rendered_bus) {
+-    destination_bus->Zero();
+-  } else if (rendered_bus != destination_bus) {
+-    // in-place processing was not possible - so copy
+-    destination_bus->CopyFrom(*rendered_bus);
++    } else {
++      // Not allowed to pull on the graph or couldn't get the lock.
++      destination_bus->Zero();
++    }
+   }
+ 
+-  // Process nodes which need a little extra help because they are not connected
+-  // to anything, but still need to process.
++  // Process nodes which need a little extra help because they are not
++  // connected to anything, but still need to process.
+   Context()->GetDeferredTaskHandler().ProcessAutomaticPullNodes(
+       number_of_frames);
+ 
+diff --git a/third_party/blink/renderer/modules/webaudio/realtime_audio_destination_node.cc b/third_party/blink/renderer/modules/webaudio/realtime_audio_destination_node.cc
+index 4d3666b37d0fab3aa76541bad7f8f6b40c5e1f3d..71507ed2ccec3e3fd90602e21995ee477dff5748 100644
+--- a/third_party/blink/renderer/modules/webaudio/realtime_audio_destination_node.cc
++++ b/third_party/blink/renderer/modules/webaudio/realtime_audio_destination_node.cc
+@@ -53,7 +53,6 @@ RealtimeAudioDestinationHandler::RealtimeAudioDestinationHandler(
+     : AudioDestinationHandler(node),
+       latency_hint_(latency_hint),
+       sample_rate_(sample_rate),
+-      allow_pulling_audio_graph_(false),
+       task_runner_(Context()->GetExecutionContext()->GetTaskRunner(
+           TaskType::kInternalMediaRealTime)) {
+   // Node-specific default channel count and mixing rules.
+@@ -200,28 +199,38 @@ void RealtimeAudioDestinationHandler::Render(
+   // Only pull on the audio graph if we have not stopped the destination.  It
+   // takes time for the destination to stop, but we want to stop pulling before
+   // the destination has actually stopped.
+-  if (IsPullingAudioGraphAllowed()) {
+-    // Renders the graph by pulling all the inputs to this node. This will in
+-    // turn pull on their inputs, all the way backwards through the graph.
+-    scoped_refptr<AudioBus> rendered_bus =
+-        Input(0).Pull(destination_bus, number_of_frames);
+-
+-    DCHECK(rendered_bus);
+-    if (!rendered_bus) {
+-      // AudioNodeInput might be in the middle of destruction. Then the internal
+-      // summing bus will return as nullptr. Then zero out the output.
++  {
++    // The entire block that relies on |IsPullingAudioGraphAllowed| needs
++    // locking to prevent pulling audio graph being disallowed (i.e. a
++    // destruction started) in the middle of processing.
++    MutexTryLocker try_locker(allow_pulling_audio_graph_mutex_);
++
++    if (IsPullingAudioGraphAllowed() && try_locker.Locked()) {
++      // Renders the graph by pulling all the inputs to this node. This will in
++      // turn pull on their inputs, all the way backwards through the graph.
++      scoped_refptr<AudioBus> rendered_bus =
++          Input(0).Pull(destination_bus, number_of_frames);
++
++      DCHECK(rendered_bus);
++      if (!rendered_bus) {
++        // AudioNodeInput might be in the middle of destruction. Then the
++        // internal summing bus will return as nullptr. Then zero out the
++        // output.
++        destination_bus->Zero();
++      } else if (rendered_bus != destination_bus) {
++        // In-place processing was not possible. Copy the rendered result to the
++        // given |destination_bus| buffer.
++        destination_bus->CopyFrom(*rendered_bus);
++      }
++    } else {
++      // Not allowed to pull on the graph or couldn't get the lock.
+       destination_bus->Zero();
+-    } else if (rendered_bus != destination_bus) {
+-      // In-place processing was not possible. Copy the rendered result to the
+-      // given |destination_bus| buffer.
+-      destination_bus->CopyFrom(*rendered_bus);
+     }
+-  } else {
+-    destination_bus->Zero();
+   }
+ 
+-  // Processes "automatic" nodes that are not connected to anything. This can
+-  // be done after copying because it does not affect the rendered result.
++  // Processes "automatic" nodes that are not connected to anything. This
++  // can be done after copying because it does not affect the rendered
++  // result.
+   context->GetDeferredTaskHandler().ProcessAutomaticPullNodes(number_of_frames);
+ 
+   context->HandlePostRenderTasks();
+diff --git a/third_party/blink/renderer/modules/webaudio/realtime_audio_destination_node.h b/third_party/blink/renderer/modules/webaudio/realtime_audio_destination_node.h
+index a0a3baefe5aaa7ed77c08273188d2a39da8a3cd1..638d364afa38fd3a1d5d34b6cd32acc7ab4de58e 100644
+--- a/third_party/blink/renderer/modules/webaudio/realtime_audio_destination_node.h
++++ b/third_party/blink/renderer/modules/webaudio/realtime_audio_destination_node.h
+@@ -84,10 +84,6 @@ class RealtimeAudioDestinationHandler final
+   // Returns a given frames-per-buffer size from audio infra.
+   int GetFramesPerBuffer() const;
+ 
+-  bool IsPullingAudioGraphAllowed() const {
+-    return allow_pulling_audio_graph_.load(std::memory_order_acquire);
+-  }
+-
+   // Sets the detect silence flag for the platform destination.
+   void SetDetectSilence(bool detect_silence);
+ 
+@@ -105,16 +101,6 @@ class RealtimeAudioDestinationHandler final
+   // Render() method.
+   void SetDetectSilenceIfNecessary(bool has_automatic_pull_nodes);
+ 
+-  // Should only be called from StartPlatformDestination.
+-  void EnablePullingAudioGraph() {
+-    allow_pulling_audio_graph_.store(true, std::memory_order_release);
+-  }
+-
+-  // Should only be called from StopPlatformDestination.
+-  void DisablePullingAudioGraph() {
+-    allow_pulling_audio_graph_.store(false, std::memory_order_release);
+-  }
+-
+   const WebAudioLatencyHint latency_hint_;
+ 
+   // Holds the audio device thread that runs the real time audio context.
+@@ -122,16 +108,6 @@ class RealtimeAudioDestinationHandler final
+ 
+   base::Optional<float> sample_rate_;
+ 
+-  // If true, the audio graph will be pulled to get new data.  Otherwise, the
+-  // graph is not pulled, even if the audio thread is still running and
+-  // requesting data.
+-  //
+-  // Must be modified only in StartPlatformDestination (via
+-  // EnablePullingAudioGraph) or StopPlatformDestination (via
+-  // DisablePullingAudioGraph) .  This is modified only by the main threda and
+-  // the audio thread only reads this.
+-  std::atomic_bool allow_pulling_audio_graph_;
+-
+   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
+ 
+   // Represents the current condition of silence detection. By default, the
diff --git a/patches/chromium/cherry-pick-88f263f401b4.patch b/patches/chromium/cherry-pick-88f263f401b4.patch
new file mode 100644
index 0000000000000..15a5aa459e517
--- /dev/null
+++ b/patches/chromium/cherry-pick-88f263f401b4.patch
@@ -0,0 +1,315 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Will Cassella <cassew@google.com>
+Date: Thu, 24 Sep 2020 22:54:27 +0000
+Subject: Add callback to WebMediaPlayerImpl to notify when a redirect occurs
+
+(cherry picked from commit 8b18bcfd9aa8096c4551ec34c0225b6017cd211e)
+
+Bug: 1128657
+Change-Id: I9548e1f3bfe5693871a56e23c3373f45147e52e0
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2422091
+Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
+Reviewed-by: Guido Urdaneta <guidou@chromium.org>
+Commit-Queue: Guido Urdaneta <guidou@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#809217}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2425223
+Commit-Queue: Will Cassella <cassew@google.com>
+Cr-Commit-Position: refs/branch-heads/4240@{#993}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/media/blink/multibuffer_data_source.cc b/media/blink/multibuffer_data_source.cc
+index 0f6ae1fb8b4ff9f24ce3f407b7359e016fc6de5f..4ec77cf8a6b56002e601fb89eb0dee059f3ab31b 100644
+--- a/media/blink/multibuffer_data_source.cc
++++ b/media/blink/multibuffer_data_source.cc
+@@ -145,7 +145,7 @@ MultibufferDataSource::MultibufferDataSource(
+   DCHECK(url_data_.get());
+   url_data_->Use();
+   url_data_->OnRedirect(
+-      base::BindOnce(&MultibufferDataSource::OnRedirect, weak_ptr_));
++      base::BindOnce(&MultibufferDataSource::OnRedirected, weak_ptr_));
+ }
+ 
+ MultibufferDataSource::~MultibufferDataSource() {
+@@ -219,10 +219,10 @@ void MultibufferDataSource::Initialize(InitializeCB init_cb) {
+   }
+ }
+ 
+-void MultibufferDataSource::OnRedirect(
+-    const scoped_refptr<UrlData>& destination) {
+-  if (!destination) {
+-    // A failure occured.
++void MultibufferDataSource::OnRedirected(
++    const scoped_refptr<UrlData>& new_destination) {
++  if (!new_destination) {
++    // A failure occurred.
+     failed_ = true;
+     if (init_cb_) {
+       render_task_runner_->PostTask(
+@@ -235,38 +235,39 @@ void MultibufferDataSource::OnRedirect(
+     StopLoader();
+     return;
+   }
+-  if (url_data_->url().GetOrigin() != destination->url().GetOrigin()) {
++  if (url_data_->url().GetOrigin() != new_destination->url().GetOrigin()) {
+     single_origin_ = false;
+   }
+   SetReader(nullptr);
+-  url_data_ = std::move(destination);
++  url_data_ = std::move(new_destination);
+ 
+-  if (url_data_) {
+-    url_data_->OnRedirect(
+-        base::BindOnce(&MultibufferDataSource::OnRedirect, weak_ptr_));
++  url_data_->OnRedirect(
++      base::BindOnce(&MultibufferDataSource::OnRedirected, weak_ptr_));
+ 
+-    if (init_cb_) {
+-      CreateResourceLoader(0, kPositionNotSpecified);
+-      if (reader_->Available()) {
+-        render_task_runner_->PostTask(
+-            FROM_HERE,
+-            base::BindOnce(&MultibufferDataSource::StartCallback, weak_ptr_));
+-      } else {
+-        reader_->Wait(1, base::BindOnce(&MultibufferDataSource::StartCallback,
+-                                        weak_ptr_));
+-      }
+-    } else if (read_op_) {
+-      CreateResourceLoader(read_op_->position(), kPositionNotSpecified);
+-      if (reader_->Available()) {
+-        render_task_runner_->PostTask(
+-            FROM_HERE,
+-            base::BindOnce(&MultibufferDataSource::ReadTask, weak_ptr_));
+-      } else {
+-        reader_->Wait(
+-            1, base::BindOnce(&MultibufferDataSource::ReadTask, weak_ptr_));
+-      }
++  if (init_cb_) {
++    CreateResourceLoader(0, kPositionNotSpecified);
++    if (reader_->Available()) {
++      render_task_runner_->PostTask(
++          FROM_HERE,
++          base::BindOnce(&MultibufferDataSource::StartCallback, weak_ptr_));
++    } else {
++      reader_->Wait(
++          1, base::BindOnce(&MultibufferDataSource::StartCallback, weak_ptr_));
++    }
++  } else if (read_op_) {
++    CreateResourceLoader(read_op_->position(), kPositionNotSpecified);
++    if (reader_->Available()) {
++      render_task_runner_->PostTask(
++          FROM_HERE,
++          base::BindOnce(&MultibufferDataSource::ReadTask, weak_ptr_));
++    } else {
++      reader_->Wait(
++          1, base::BindOnce(&MultibufferDataSource::ReadTask, weak_ptr_));
+     }
+   }
++
++  if (redirect_cb_)
++    redirect_cb_.Run();
+ }
+ 
+ void MultibufferDataSource::SetPreload(Preload preload) {
+@@ -287,6 +288,10 @@ bool MultibufferDataSource::IsCorsCrossOrigin() const {
+   return url_data_->is_cors_cross_origin();
+ }
+ 
++void MultibufferDataSource::OnRedirect(RedirectCB callback) {
++  redirect_cb_ = std::move(callback);
++}
++
+ bool MultibufferDataSource::HasAccessControl() const {
+   return url_data_->has_access_control();
+ }
+diff --git a/media/blink/multibuffer_data_source.h b/media/blink/multibuffer_data_source.h
+index 3da5a7bba5e7cc0f54998a81649f4dd9d78aa7be..da316964ff1543086865d7c85597f381ca8a3296 100644
+--- a/media/blink/multibuffer_data_source.h
++++ b/media/blink/multibuffer_data_source.h
+@@ -38,6 +38,7 @@ class MultiBufferReader;
+ class MEDIA_BLINK_EXPORT MultibufferDataSource : public DataSource {
+  public:
+   using DownloadingCB = base::RepeatingCallback<void(bool)>;
++  using RedirectCB = base::RepeatingCallback<void()>;
+ 
+   // Used to specify video preload states. They are "hints" to the browser about
+   // how aggressively the browser should load and buffer data.
+@@ -82,6 +83,9 @@ class MEDIA_BLINK_EXPORT MultibufferDataSource : public DataSource {
+   // This must be called after the response arrives.
+   bool IsCorsCrossOrigin() const;
+ 
++  // Provides a callback to be run when the underlying url is redirected.
++  void OnRedirect(RedirectCB callback);
++
+   // Returns true if the response includes an Access-Control-Allow-Origin
+   // header (that is not "null").
+   bool HasAccessControl() const;
+@@ -128,7 +132,7 @@ class MEDIA_BLINK_EXPORT MultibufferDataSource : public DataSource {
+   bool cancel_on_defer_for_testing() const { return cancel_on_defer_; }
+ 
+  protected:
+-  void OnRedirect(const scoped_refptr<UrlData>& destination);
++  void OnRedirected(const scoped_refptr<UrlData>& new_destination);
+ 
+   // A factory method to create a BufferedResourceLoader based on the read
+   // parameters.
+@@ -243,6 +247,9 @@ class MEDIA_BLINK_EXPORT MultibufferDataSource : public DataSource {
+   // go between different origins.
+   bool single_origin_;
+ 
++  // Callback used when a redirect occurs.
++  RedirectCB redirect_cb_;
++
+   // Close the connection when we have enough data.
+   bool cancel_on_defer_;
+ 
+diff --git a/media/blink/webmediaplayer_impl.cc b/media/blink/webmediaplayer_impl.cc
+index 8c769e69efad504f15a0fc79a2efc0cecf91f0a8..b234635ad78f6a22c91ecf854e7ae2f468315cc4 100644
+--- a/media/blink/webmediaplayer_impl.cc
++++ b/media/blink/webmediaplayer_impl.cc
+@@ -799,6 +799,8 @@ void WebMediaPlayerImpl::DoLoad(LoadType load_type,
+         base::BindRepeating(&WebMediaPlayerImpl::NotifyDownloading,
+                             weak_this_));
+     data_source_.reset(mb_data_source_);
++    mb_data_source_->OnRedirect(base::BindRepeating(
++        &WebMediaPlayerImpl::OnDataSourceRedirected, weak_this_));
+     mb_data_source_->SetPreload(preload_);
+     mb_data_source_->SetIsClientAudioElement(client_->IsAudioElement());
+     mb_data_source_->Initialize(
+@@ -2642,6 +2644,16 @@ void WebMediaPlayerImpl::DataSourceInitialized(bool success) {
+   StartPipeline();
+ }
+ 
++void WebMediaPlayerImpl::OnDataSourceRedirected() {
++  DVLOG(1) << __func__;
++  DCHECK(main_task_runner_->BelongsToCurrentThread());
++  DCHECK(mb_data_source_);
++
++  if (WouldTaintOrigin()) {
++    audio_source_provider_->TaintOrigin();
++  }
++}
++
+ void WebMediaPlayerImpl::NotifyDownloading(bool is_downloading) {
+   DVLOG(1) << __func__ << "(" << is_downloading << ")";
+   if (!is_downloading && network_state_ == WebMediaPlayer::kNetworkStateLoading)
+diff --git a/media/blink/webmediaplayer_impl.h b/media/blink/webmediaplayer_impl.h
+index f4e48c46f6217b218f39b96d40220f040bdb556b..d2ee61bae7e1b30d0eac4a14437e00bbdc8a6e68 100644
+--- a/media/blink/webmediaplayer_impl.h
++++ b/media/blink/webmediaplayer_impl.h
+@@ -382,6 +382,9 @@ class MEDIA_BLINK_EXPORT WebMediaPlayerImpl
+   // Called after asynchronous initialization of a data source completed.
+   void DataSourceInitialized(bool success);
+ 
++  // Called if the |MultiBufferDataSource| is redirected.
++  void OnDataSourceRedirected();
++
+   // Called when the data source is downloading or paused.
+   void NotifyDownloading(bool is_downloading);
+ 
+diff --git a/third_party/blink/public/platform/webaudiosourceprovider_impl.h b/third_party/blink/public/platform/webaudiosourceprovider_impl.h
+index 5383074dcbffbb77a102de6fb551628ff5b964b8..bbf2a0b3d28282587625d6a5cd0103f6a5378b54 100644
+--- a/third_party/blink/public/platform/webaudiosourceprovider_impl.h
++++ b/third_party/blink/public/platform/webaudiosourceprovider_impl.h
+@@ -75,6 +75,7 @@ class BLINK_PLATFORM_EXPORT WebAudioSourceProviderImpl
+   bool CurrentThreadIsRenderingThread() override;
+   void SwitchOutputDevice(const std::string& device_id,
+                           media::OutputDeviceStatusCB callback) override;
++  void TaintOrigin();
+ 
+   // These methods allow a client to get a copy of the rendered audio.
+   void SetCopyAudioCallback(CopyAudioCB callback);
+diff --git a/third_party/blink/renderer/modules/mediacapturefromelement/html_audio_element_capturer_source_unittest.cc b/third_party/blink/renderer/modules/mediacapturefromelement/html_audio_element_capturer_source_unittest.cc
+index 48092cc09148886bf74e544f640fb373bb374102..2ffaca2d399daba2d59f6dd218ce84e5b9c6d880 100644
+--- a/third_party/blink/renderer/modules/mediacapturefromelement/html_audio_element_capturer_source_unittest.cc
++++ b/third_party/blink/renderer/modules/mediacapturefromelement/html_audio_element_capturer_source_unittest.cc
+@@ -102,7 +102,7 @@ class HTMLAudioElementCapturerSourceTest : public testing::Test {
+     media_stream_component_ = MakeGarbageCollected<MediaStreamComponent>(
+         media_stream_source_->Id(), media_stream_source_);
+ 
+-    // |media_stream_source_| takes wnership of
++    // |media_stream_source_| takes ownership of
+     // HtmlAudioElementCapturerSource.
+     auto capture_source = std::make_unique<HtmlAudioElementCapturerSource>(
+         audio_source_, blink::scheduler::GetSingleThreadTaskRunnerForTesting());
+@@ -183,4 +183,36 @@ TEST_F(HTMLAudioElementCapturerSourceTest,
+   track()->RemoveSink(&sink);
+ }
+ 
++TEST_F(HTMLAudioElementCapturerSourceTest, TaintedPlayerDeliversMutedAudio) {
++  testing::InSequence s;
++
++  base::RunLoop run_loop;
++  base::OnceClosure quit_closure = run_loop.QuitClosure();
++
++  MockMediaStreamAudioSink sink;
++  track()->AddSink(&sink);
++  EXPECT_CALL(sink, OnSetFormat(testing::_)).Times(1);
++  EXPECT_CALL(
++      sink,
++      OnData(testing::AllOf(
++                 testing::Property(&media::AudioBus::channels,
++                                   kNumChannelsForTest),
++                 testing::Property(&media::AudioBus::frames,
++                                   kAudioTrackSamplesPerBuffer),
++                 testing::Property(&media::AudioBus::AreFramesZero, true)),
++             testing::_))
++      .Times(1)
++      .WillOnce([&](const auto&, auto) { std::move(quit_closure).Run(); });
++
++  audio_source_->TaintOrigin();
++
++  std::unique_ptr<media::AudioBus> bus =
++      media::AudioBus::Create(kNumChannelsForTest, kAudioTrackSamplesPerBuffer);
++  InjectAudio(bus.get());
++  run_loop.Run();
++
++  track()->Stop();
++  track()->RemoveSink(&sink);
++}
++
+ }  // namespace blink
+diff --git a/third_party/blink/renderer/platform/media/webaudiosourceprovider_impl.cc b/third_party/blink/renderer/platform/media/webaudiosourceprovider_impl.cc
+index a1e014ceb2ebc1496dd5712f2ed863a56e455af6..c54e1768886a7d2d922f13596a9fb3b456ba6611 100644
+--- a/third_party/blink/renderer/platform/media/webaudiosourceprovider_impl.cc
++++ b/third_party/blink/renderer/platform/media/webaudiosourceprovider_impl.cc
+@@ -81,6 +81,10 @@ class WebAudioSourceProviderImpl::TeeFilter
+     const int num_rendered_frames = renderer_->Render(
+         delay, delay_timestamp, prior_frames_skipped, audio_bus);
+ 
++    // Zero out frames after rendering
++    if (origin_tainted_.IsSet())
++      audio_bus->Zero();
++
+     // Avoid taking the copy lock for the vast majority of cases.
+     if (copy_required_) {
+       base::AutoLock auto_lock(copy_lock_);
+@@ -114,11 +118,18 @@ class WebAudioSourceProviderImpl::TeeFilter
+     copy_audio_bus_callback_ = std::move(callback);
+   }
+ 
++  void TaintOrigin() { origin_tainted_.Set(); }
++
+  private:
+   AudioRendererSink::RenderCallback* renderer_ = nullptr;
+   int channels_ = 0;
+   int sample_rate_ = 0;
+ 
++  // Indicates whether the audio source is tainted, and output should be muted.
++  // This can happen if the media element source is a cross-origin source which
++  // the page is not allowed to access due to CORS restrictions.
++  base::AtomicFlag origin_tainted_;
++
+   // The vast majority of the time we're operating in passthrough mode. So only
+   // acquire a lock to read |copy_audio_bus_callback_| when necessary.
+   std::atomic<bool> copy_required_;
+@@ -318,6 +329,10 @@ void WebAudioSourceProviderImpl::SwitchOutputDevice(
+     sink_->SwitchOutputDevice(device_id, std::move(callback));
+ }
+ 
++void WebAudioSourceProviderImpl::TaintOrigin() {
++  tee_filter_->TaintOrigin();
++}
++
+ void WebAudioSourceProviderImpl::SetCopyAudioCallback(CopyAudioCB callback) {
+   DCHECK(!callback.is_null());
+   tee_filter_->SetCopyAudioCallback(std::move(callback));
diff --git a/patches/chromium/cherry-pick-8c3eb9d1c409.patch b/patches/chromium/cherry-pick-8c3eb9d1c409.patch
new file mode 100644
index 0000000000000..e401c6f81f04d
--- /dev/null
+++ b/patches/chromium/cherry-pick-8c3eb9d1c409.patch
@@ -0,0 +1,143 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Scott Violet <sky@chromium.org>
+Date: Wed, 31 Mar 2021 13:28:05 +0000
+Subject: x11/ozone: fix two edge cases
+
+WindowTreeHost::OnHostMovedInPixels() may trigger a nested message
+loop (tab dragging), which when the stack unravels means this may
+be deleted. This adds an early out if this happens.
+
+X11WholeScreenMoveLoop has a similar issue, in so far as notifying
+the delegate may delete this.
+
+BUG=1185482
+TEST=WindowTreeHostPlatform.DeleteHostFromOnHostMovedInPixels
+
+(cherry picked from commit 5e3a738b1204941aab9f15c0eb3d06e20fefd96e)
+
+(cherry picked from commit 8ad84a8e7882275fb32f938fd0adc04d1a2a5773)
+
+Change-Id: Ieca1c90b3e4358da50b332abe2941fdbb50c5c25
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2743555
+Reviewed-by: Thomas Anderson <thomasanderson@chromium.org>
+Commit-Queue: Scott Violet <sky@chromium.org>
+Cr-Original-Original-Commit-Position: refs/heads/master@{#860852}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2779886
+Cr-Original-Commit-Position: refs/branch-heads/4389@{#1583}
+Cr-Original-Branched-From: 9251c5db2b6d5a59fe4eac7aafa5fed37c139bb7-refs/heads/master@{#843830}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2794391
+Reviewed-by: Scott Violet <sky@chromium.org>
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Commit-Queue: Artem Sumaneev <asumaneev@google.com>
+Cr-Commit-Position: refs/branch-heads/4240@{#1583}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/ui/aura/window_tree_host_platform.cc b/ui/aura/window_tree_host_platform.cc
+index 917b45bf3f8554c63886af30b1483cd97670299c..c9053e7c7e7abb1cdbaf114028579a0484b1d4a9 100644
+--- a/ui/aura/window_tree_host_platform.cc
++++ b/ui/aura/window_tree_host_platform.cc
+@@ -214,13 +214,21 @@ void WindowTreeHostPlatform::OnBoundsChanged(const gfx::Rect& new_bounds) {
+   float current_scale = compositor()->device_scale_factor();
+   float new_scale = ui::GetScaleFactorForNativeView(window());
+   gfx::Rect old_bounds = bounds_in_pixels_;
++  auto weak_ref = GetWeakPtr();
+   bounds_in_pixels_ = new_bounds;
+-  if (bounds_in_pixels_.origin() != old_bounds.origin())
++  if (bounds_in_pixels_.origin() != old_bounds.origin()) {
+     OnHostMovedInPixels(bounds_in_pixels_.origin());
++    // Changing the bounds may destroy this.
++    if (!weak_ref)
++      return;
++  }
+   if (bounds_in_pixels_.size() != old_bounds.size() ||
+       current_scale != new_scale) {
+     pending_size_ = gfx::Size();
+     OnHostResizedInPixels(bounds_in_pixels_.size());
++    // Changing the size may destroy this.
++    if (!weak_ref)
++      return;
+   }
+   DCHECK_GT(on_bounds_changed_recursion_depth_, 0);
+   if (--on_bounds_changed_recursion_depth_ == 0) {
+diff --git a/ui/aura/window_tree_host_platform_unittest.cc b/ui/aura/window_tree_host_platform_unittest.cc
+index eda14e2f0cdf5015f366aa70ea68ae2a2c2b431e..4de039c88af8a6f0ac03df2f772cfea2dfe3514f 100644
+--- a/ui/aura/window_tree_host_platform_unittest.cc
++++ b/ui/aura/window_tree_host_platform_unittest.cc
+@@ -34,7 +34,7 @@ class TestWindowTreeHost : public WindowTreeHostPlatform {
+ // OnHostWill/DidProcessBoundsChange. Additionally, this triggers a bounds
+ // change from within OnHostResized(). Such a scenario happens in production
+ // code.
+-class TestWindowTreeHostObserver : public aura::WindowTreeHostObserver {
++class TestWindowTreeHostObserver : public WindowTreeHostObserver {
+  public:
+   TestWindowTreeHostObserver(WindowTreeHostPlatform* host,
+                              ui::PlatformWindow* platform_window)
+@@ -51,7 +51,7 @@ class TestWindowTreeHostObserver : public aura::WindowTreeHostObserver {
+     return on_host_will_process_bounds_change_count_;
+   }
+ 
+-  // aura::WindowTreeHostObserver:
++  // WindowTreeHostObserver:
+   void OnHostResized(WindowTreeHost* host) override {
+     if (!should_change_bounds_in_on_resized_)
+       return;
+@@ -92,5 +92,41 @@ TEST_F(WindowTreeHostPlatformTest, HostWillProcessBoundsChangeRecursion) {
+   EXPECT_EQ(1, observer.on_host_will_process_bounds_change_count());
+ }
+ 
++// Deletes WindowTreeHostPlatform from OnHostMovedInPixels().
++class DeleteHostWindowTreeHostObserver : public WindowTreeHostObserver {
++ public:
++  explicit DeleteHostWindowTreeHostObserver(
++      std::unique_ptr<TestWindowTreeHost> host)
++      : host_(std::move(host)) {
++    host_->AddObserver(this);
++  }
++  ~DeleteHostWindowTreeHostObserver() override = default;
++
++  TestWindowTreeHost* host() { return host_.get(); }
++
++  // WindowTreeHostObserver:
++  void OnHostMovedInPixels(WindowTreeHost* host,
++                           const gfx::Point& new_origin_in_pixels) override {
++    host_->RemoveObserver(this);
++    host_.reset();
++  }
++
++ private:
++  std::unique_ptr<TestWindowTreeHost> host_;
++
++  DISALLOW_COPY_AND_ASSIGN(DeleteHostWindowTreeHostObserver);
++};
++
++// Verifies WindowTreeHostPlatform can be safely deleted when calling
++// OnHostMovedInPixels().
++// Regression test for https://crbug.com/1185482
++TEST_F(WindowTreeHostPlatformTest, DeleteHostFromOnHostMovedInPixels) {
++  std::unique_ptr<TestWindowTreeHost> host =
++      std::make_unique<TestWindowTreeHost>();
++  DeleteHostWindowTreeHostObserver observer(std::move(host));
++  observer.host()->SetBoundsInPixels(gfx::Rect(1, 2, 3, 4));
++  EXPECT_EQ(nullptr, observer.host());
++}
++
+ }  // namespace
+ }  // namespace aura
+diff --git a/ui/base/x/x11_whole_screen_move_loop.cc b/ui/base/x/x11_whole_screen_move_loop.cc
+index 39f4d0c12aa1feb1702c3f4aa4ba0f62be591197..2bbb1f035b0db8de218ce629cc16aab91cf8519b 100644
+--- a/ui/base/x/x11_whole_screen_move_loop.cc
++++ b/ui/base/x/x11_whole_screen_move_loop.cc
+@@ -62,9 +62,13 @@ X11WholeScreenMoveLoop::~X11WholeScreenMoveLoop() = default;
+ void X11WholeScreenMoveLoop::DispatchMouseMovement() {
+   if (!last_motion_in_screen_)
+     return;
++  auto weak_ref = weak_factory_.GetWeakPtr();
+   delegate_->OnMouseMovement(last_motion_in_screen_->root_location(),
+                              last_motion_in_screen_->flags(),
+                              last_motion_in_screen_->time_stamp());
++  // The delegate may delete this during dispatch.
++  if (!weak_ref)
++    return;
+   last_motion_in_screen_.reset();
+ }
+ 
diff --git a/patches/chromium/cherry-pick-8f24f935c903.patch b/patches/chromium/cherry-pick-8f24f935c903.patch
new file mode 100644
index 0000000000000..9a9d329b17320
--- /dev/null
+++ b/patches/chromium/cherry-pick-8f24f935c903.patch
@@ -0,0 +1,40 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Adrian Taylor <adetaylor@chromium.org>
+Date: Thu, 5 Nov 2020 08:50:39 +0000
+Subject: Prevent overflow of drag image on Windows.
+
+(cherry picked from commit 236b1a349111fc945c741f85e1b1e2e04d9c42ff)
+
+(cherry picked from commit 5f61af8f3af5efd0d915a51da6df822678d959b9)
+
+Bug: 1144489
+Change-Id: I130adffc1c69073295537aaff3ce7054260064fc
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2513345
+Reviewed-by: Krishna Govind <govind@chromium.org>
+Cr-Original-Original-Commit-Position: refs/branch-heads/4310@{#4}
+Cr-Original-Original-Branched-From: 3e31ebb7467fdc4295f123385825b8c95ef13332-refs/heads/master@{#822916}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2513349
+Reviewed-by: Adrian Taylor <adetaylor@chromium.org>
+Commit-Queue: Krishna Govind <govind@chromium.org>
+Cr-Original-Commit-Position: refs/branch-heads/4240@{#1373}
+Cr-Original-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2517728
+Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
+Commit-Queue: Victor-Gabriel Savu <vsavu@google.com>
+Cr-Commit-Position: refs/branch-heads/4240_112@{#18}
+Cr-Branched-From: 427c00d3874b6abcf4c4c2719768835fc3ef26d6-refs/branch-heads/4240@{#1291}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/ui/base/dragdrop/os_exchange_data_provider_win.cc b/ui/base/dragdrop/os_exchange_data_provider_win.cc
+index b51a0161fdf028ac2a4f079b813d6622602f980c..41f163a3424e89a9370faebb77ac0058da9b01f6 100644
+--- a/ui/base/dragdrop/os_exchange_data_provider_win.cc
++++ b/ui/base/dragdrop/os_exchange_data_provider_win.cc
+@@ -714,7 +714,7 @@ void OSExchangeDataProviderWin::SetDragImage(
+   int width = unpremul_bitmap.width();
+   int height = unpremul_bitmap.height();
+   size_t rowbytes = unpremul_bitmap.rowBytes();
+-  DCHECK_EQ(rowbytes, static_cast<size_t>(width) * 4u);
++  CHECK_EQ(rowbytes, static_cast<size_t>(width) * 4u);
+ 
+   void* bits;
+   HBITMAP hbitmap;
diff --git a/patches/chromium/cherry-pick-9afec1792cfc.patch b/patches/chromium/cherry-pick-9afec1792cfc.patch
new file mode 100644
index 0000000000000..1f24f9d49fddf
--- /dev/null
+++ b/patches/chromium/cherry-pick-9afec1792cfc.patch
@@ -0,0 +1,110 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Xiaocheng Hu <xiaochengh@chromium.org>
+Date: Wed, 3 Feb 2021 14:56:15 +0000
+Subject: Move FontPreloadManager to Oilpan
+
+Currently, TimerBase cannot correctly track the lifetime of objects
+embedded in GC-ed objects, like FontPreloadManager which is embedded in
+Document. This causes some memory safety issues.
+
+This patch moves FontPreloadManager to Oilpan to avoid the issue.
+
+(cherry picked from commit d31bbf2910ee44e4a206d926ddae6827d16a2754)
+
+(cherry picked from commit cdab130053839ffae4a02d00812c1c3a0ecf01bd)
+
+Bug: 1154965
+Change-Id: I490b416abc6a997034baaa7994cd3a50bca7e055
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2611755
+Reviewed-by: Kentaro Hara <haraken@chromium.org>
+Commit-Queue: Xiaocheng Hu <xiaochengh@chromium.org>
+Cr-Original-Original-Commit-Position: refs/heads/master@{#841039}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2653946
+Commit-Queue: Kentaro Hara <haraken@chromium.org>
+Auto-Submit: Xiaocheng Hu <xiaochengh@chromium.org>
+Cr-Original-Commit-Position: refs/branch-heads/4324@{#2045}
+Cr-Original-Branched-From: c73b5a651d37a6c4d0b8e3262cc4015a5579c6c8-refs/heads/master@{#827102}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2665939
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Commit-Queue: Artem Sumaneev <asumaneev@google.com>
+Cr-Commit-Position: refs/branch-heads/4240@{#1536}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/third_party/blink/renderer/core/dom/document.cc b/third_party/blink/renderer/core/dom/document.cc
+index 2fea6ad5cb19e42dbb51a6432ce119b935c23d8f..f84f12cfa8ea70051bcdc82e723816d4ae266b5d 100644
+--- a/third_party/blink/renderer/core/dom/document.cc
++++ b/third_party/blink/renderer/core/dom/document.cc
+@@ -791,7 +791,7 @@ Document::Document(const DocumentInit& initializer,
+           MakeGarbageCollected<DisplayLockDocumentState>(this)),
+       permission_service_(GetExecutionContext()),
+       has_trust_tokens_answerer_(GetExecutionContext()),
+-      font_preload_manager_(*this) {
++      font_preload_manager_(MakeGarbageCollected<FontPreloadManager>(*this)) {
+   GetOriginTrialContext()->BindExecutionContext(GetExecutionContext());
+ 
+   if (dom_window_) {
+@@ -6892,7 +6892,7 @@ void Document::BeginLifecycleUpdatesIfRenderingReady() {
+     return;
+   if (!HaveRenderBlockingResourcesLoaded())
+     return;
+-  font_preload_manager_.WillBeginRendering();
++  font_preload_manager_->WillBeginRendering();
+   View()->BeginLifecycleUpdates();
+ }
+ 
+@@ -7660,7 +7660,7 @@ bool Document::HaveScriptBlockingStylesheetsLoaded() const {
+ bool Document::HaveRenderBlockingResourcesLoaded() const {
+   return HaveImportsLoaded() &&
+          style_engine_->HaveRenderBlockingStylesheetsLoaded() &&
+-         !font_preload_manager_.HasPendingRenderBlockingFonts();
++         !font_preload_manager_->HasPendingRenderBlockingFonts();
+ }
+ 
+ Locale& Document::GetCachedLocale(const AtomicString& locale) {
+@@ -8503,7 +8503,7 @@ void Document::ClearUseCounterForTesting(mojom::WebFeature feature) {
+ }
+ 
+ void Document::FontPreloadingFinishedOrTimedOut() {
+-  DCHECK(!font_preload_manager_.HasPendingRenderBlockingFonts());
++  DCHECK(!font_preload_manager_->HasPendingRenderBlockingFonts());
+   if (IsA<HTMLDocument>(this) && body()) {
+     // For HTML, we resume only when we're past the body tag, so that we should
+     // have something to paint now.
+diff --git a/third_party/blink/renderer/core/dom/document.h b/third_party/blink/renderer/core/dom/document.h
+index b197ad6e06c6ba1b609607a78aa798f1cc397a3e..b092be4c8bd55567c14d81c9bee343da432747a0 100644
+--- a/third_party/blink/renderer/core/dom/document.h
++++ b/third_party/blink/renderer/core/dom/document.h
+@@ -1647,7 +1647,7 @@ class CORE_EXPORT Document : public ContainerNode,
+                                  unsigned new_length);
+   void NotifyChangeChildren(const ContainerNode& container);
+ 
+-  FontPreloadManager& GetFontPreloadManager() { return font_preload_manager_; }
++  FontPreloadManager& GetFontPreloadManager() { return *font_preload_manager_; }
+   void FontPreloadingFinishedOrTimedOut();
+ 
+   void IncrementAsyncScriptCount() { async_script_count_++; }
+@@ -2230,7 +2230,7 @@ class CORE_EXPORT Document : public ContainerNode,
+   HeapHashSet<Member<ScriptPromiseResolver>>
+       pending_has_trust_tokens_resolvers_;
+ 
+-  FontPreloadManager font_preload_manager_;
++  Member<FontPreloadManager> font_preload_manager_;
+ 
+   int async_script_count_ = 0;
+   bool first_paint_recorded_ = false;
+diff --git a/third_party/blink/renderer/core/loader/font_preload_manager.h b/third_party/blink/renderer/core/loader/font_preload_manager.h
+index 3e98fc931a205b7e20b119e7af5a5bbac1eee2b5..631f0f95e7e70d3e1bf73c78f725fdf756a721eb 100644
+--- a/third_party/blink/renderer/core/loader/font_preload_manager.h
++++ b/third_party/blink/renderer/core/loader/font_preload_manager.h
+@@ -20,9 +20,8 @@ class ResourceFinishObserver;
+ // API) and notifies the relevant document, so that it can manage the first
+ // rendering timing to work with preloaded fonts.
+ // Design doc: https://bit.ly/36E8UKB
+-class CORE_EXPORT FontPreloadManager final {
+-  DISALLOW_NEW();
+-
++class CORE_EXPORT FontPreloadManager final
++    : public GarbageCollected<FontPreloadManager> {
+  public:
+   explicit FontPreloadManager(Document&);
+   ~FontPreloadManager() = default;
diff --git a/patches/chromium/cherry-pick-9ec949913373.patch b/patches/chromium/cherry-pick-9ec949913373.patch
new file mode 100644
index 0000000000000..4bca05c8f8559
--- /dev/null
+++ b/patches/chromium/cherry-pick-9ec949913373.patch
@@ -0,0 +1,195 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Ken Rockot <rockot@google.com>
+Date: Tue, 12 Jan 2021 18:36:22 +0000
+Subject: Mojo: Fix UAF on NodeChannel
+
+TBR=rockot@google.com
+
+(cherry picked from commit 9c8a98b3983dd1c7828ceae2fc8a5a2e9bad1f68)
+
+(cherry picked from commit 06fe641d21bda1b5869a46e59b13873762ce1324)
+
+Fixed: 1162198
+Change-Id: Ief850903a7e6ba3d7c5c0129704d1f80aa3467ce
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2612085
+Commit-Queue: Ken Rockot <rockot@google.com>
+Reviewed-by: Ken Rockot <rockot@google.com>
+Reviewed-by: Robert Sesek <rsesek@chromium.org>
+Cr-Original-Original-Commit-Position: refs/heads/master@{#840942}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2621996
+Cr-Original-Commit-Position: refs/branch-heads/4324@{#1637}
+Cr-Original-Branched-From: c73b5a651d37a6c4d0b8e3262cc4015a5579c6c8-refs/heads/master@{#827102}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2623929
+Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
+Commit-Queue: Victor-Gabriel Savu <vsavu@google.com>
+Cr-Commit-Position: refs/branch-heads/4240@{#1517}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/mojo/core/BUILD.gn b/mojo/core/BUILD.gn
+index c42daf24d62b3a1c8479466d1bc4efe753099136..a7f574455ac02b656a451257cdc11a2968dd5b68 100644
+--- a/mojo/core/BUILD.gn
++++ b/mojo/core/BUILD.gn
+@@ -309,6 +309,7 @@ source_set("test_sources") {
+       "data_pipe_unittest.cc",
+       "invitation_unittest.cc",
+       "multiprocess_message_pipe_unittest.cc",
++      "node_controller_unittest.cc",
+       "platform_wrapper_unittest.cc",
+     ]
+   }
+diff --git a/mojo/core/core.cc b/mojo/core/core.cc
+index 6d06ab1fdee75c8fc8670ff7a35923aa90c4bf8c..5eed4e1be13df656897c60378dde8ec024e81a59 100644
+--- a/mojo/core/core.cc
++++ b/mojo/core/core.cc
+@@ -137,7 +137,7 @@ void Core::SetIOTaskRunner(
+ NodeController* Core::GetNodeController() {
+   base::AutoLock lock(node_controller_lock_);
+   if (!node_controller_)
+-    node_controller_.reset(new NodeController(this));
++    node_controller_ = std::make_unique<NodeController>();
+   return node_controller_.get();
+ }
+ 
+diff --git a/mojo/core/node_controller.cc b/mojo/core/node_controller.cc
+index ff93f0c3a6b2bf4a340e027ee803b9006152f031..c7646fa4dc5c5062e8a8a620e55839301af51bed 100644
+--- a/mojo/core/node_controller.cc
++++ b/mojo/core/node_controller.cc
+@@ -21,7 +21,6 @@
+ #include "mojo/core/broker.h"
+ #include "mojo/core/broker_host.h"
+ #include "mojo/core/configuration.h"
+-#include "mojo/core/core.h"
+ #include "mojo/core/request_context.h"
+ #include "mojo/core/user_message_impl.h"
+ #include "mojo/public/cpp/platform/named_platform_channel.h"
+@@ -146,10 +145,8 @@ class ThreadDestructionObserver
+ 
+ NodeController::~NodeController() = default;
+ 
+-NodeController::NodeController(Core* core)
+-    : core_(core),
+-      name_(GetRandomNodeName()),
+-      node_(new ports::Node(name_, this)) {
++NodeController::NodeController()
++    : name_(GetRandomNodeName()), node_(new ports::Node(name_, this)) {
+   DVLOG(1) << "Initializing node " << name_;
+ }
+ 
+@@ -587,10 +584,17 @@ void NodeController::AddPeer(const ports::NodeName& name,
+   }
+ }
+ 
+-void NodeController::DropPeer(const ports::NodeName& name,
++void NodeController::DropPeer(const ports::NodeName& node_name,
+                               NodeChannel* channel) {
+   DCHECK(io_task_runner_->RunsTasksInCurrentSequence());
+ 
++  // NOTE: Either the `peers_` erasure or the `pending_invitations_` erasure
++  // below, if executed, may drop the last reference to the named NodeChannel
++  // and thus result in its deletion. The passed `node_name` argument may be
++  // owned by that same NodeChannel, so we make a copy of it here to avoid
++  // potentially unsafe references further below.
++  ports::NodeName name = node_name;
++
+   {
+     base::AutoLock lock(peers_lock_);
+     auto it = peers_.find(name);
+diff --git a/mojo/core/node_controller.h b/mojo/core/node_controller.h
+index 9494de5b809e0216fde750960cd5f86c2f14b46e..6f9f0680062db679587ab1846c768846f0fbcb13 100644
+--- a/mojo/core/node_controller.h
++++ b/mojo/core/node_controller.h
+@@ -52,11 +52,10 @@ class MOJO_SYSTEM_IMPL_EXPORT NodeController : public ports::NodeDelegate,
+   };
+ 
+   // |core| owns and out-lives us.
+-  explicit NodeController(Core* core);
++  NodeController();
+   ~NodeController() override;
+ 
+   const ports::NodeName& name() const { return name_; }
+-  Core* core() const { return core_; }
+   ports::Node* node() const { return node_.get(); }
+   scoped_refptr<base::SingleThreadTaskRunner> io_task_runner() const {
+     return io_task_runner_;
+@@ -135,6 +134,8 @@ class MOJO_SYSTEM_IMPL_EXPORT NodeController : public ports::NodeDelegate,
+       base::span<const unsigned char> data);
+   static void DeserializeMessageAsEventForFuzzer(Channel::MessagePtr message);
+ 
++  scoped_refptr<NodeChannel> GetBrokerChannel();
++
+  private:
+   friend Core;
+ 
+@@ -176,7 +177,6 @@ class MOJO_SYSTEM_IMPL_EXPORT NodeController : public ports::NodeDelegate,
+ 
+   scoped_refptr<NodeChannel> GetPeerChannel(const ports::NodeName& name);
+   scoped_refptr<NodeChannel> GetInviterChannel();
+-  scoped_refptr<NodeChannel> GetBrokerChannel();
+ 
+   void AddPeer(const ports::NodeName& name,
+                scoped_refptr<NodeChannel> channel,
+@@ -254,7 +254,6 @@ class MOJO_SYSTEM_IMPL_EXPORT NodeController : public ports::NodeDelegate,
+   void ForceDisconnectProcessForTestingOnIOThread(base::ProcessId process_id);
+ 
+   // These are safe to access from any thread as long as the Node is alive.
+-  Core* const core_;
+   const ports::NodeName name_;
+   const std::unique_ptr<ports::Node> node_;
+   scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
+@@ -319,7 +318,7 @@ class MOJO_SYSTEM_IMPL_EXPORT NodeController : public ports::NodeDelegate,
+   AtomicFlag shutdown_callback_flag_;
+ 
+   // All other fields below must only be accessed on the I/O thread, i.e., the
+-  // thread on which core_->io_task_runner() runs tasks.
++  // thread on which `io_task_runner_` runs tasks.
+ 
+   // Channels to invitees during handshake.
+   NodeMap pending_invitations_;
+diff --git a/mojo/core/node_controller_unittest.cc b/mojo/core/node_controller_unittest.cc
+new file mode 100644
+index 0000000000000000000000000000000000000000..316e162376323f27f83868d6b943c40e395511bb
+--- /dev/null
++++ b/mojo/core/node_controller_unittest.cc
+@@ -0,0 +1,42 @@
++// Copyright 2013 The Chromium Authors. All rights reserved.
++// Use of this source code is governed by a BSD-style license that can be
++// found in the LICENSE file.
++
++#include "base/logging.h"
++#include "mojo/core/core.h"
++#include "mojo/core/test/mojo_test_base.h"
++#include "mojo/public/c/system/types.h"
++#include "testing/gtest/include/gtest/gtest.h"
++
++namespace mojo {
++namespace core {
++namespace {
++
++using NodeControllerTest = test::MojoTestBase;
++
++TEST_F(NodeControllerTest, AcceptInvitationFailure) {
++  // Spawn a child process that will send an invalid AcceptInvitation
++  // NodeChannel message. This is a regression test for
++  // https://crbug.com/1162198.
++  RunTestClient("SendInvalidAcceptInvitation",
++                [&](MojoHandle h) { WriteMessage(h, "hi"); });
++}
++
++DEFINE_TEST_CLIENT_TEST_WITH_PIPE(SendInvalidAcceptInvitation,
++                                  NodeControllerTest,
++                                  h) {
++  // A little communication to synchronize against Mojo bringup. By the time
++  // this read completes, we must have an internal NodeController with the
++  // parent test process connected as its broker.
++  EXPECT_EQ("hi", ReadMessage(h));
++
++  // Send an unexpected AcceptInvitation message to the parent process. This
++  // exercises the regression code path in the parent process.
++  NodeController* controller = Core::Get()->GetNodeController();
++  scoped_refptr<NodeChannel> channel = controller->GetBrokerChannel();
++  channel->AcceptInvitation(ports::NodeName{0, 0}, ports::NodeName{0, 0});
++}
++
++}  // namespace
++}  // namespace core
++}  // namespace mojo
diff --git a/patches/chromium/cherry-pick-a4faa754a9ef.patch b/patches/chromium/cherry-pick-a4faa754a9ef.patch
new file mode 100644
index 0000000000000..137e600d3d2d0
--- /dev/null
+++ b/patches/chromium/cherry-pick-a4faa754a9ef.patch
@@ -0,0 +1,73 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Harald Alvestrand <hta@chromium.org>
+Date: Tue, 2 Mar 2021 17:33:49 +0000
+Subject: Fix GetP2PSocketManager ownership
+
+Let it return a mojo::SharedRemote<> instead of a raw pointer - this is
+a decoration around a shared_refptr.
+
+(cherry picked from commit 82cdc0781ceb4c22ef5903cf3115bea518a5523b)
+
+(cherry picked from commit 6ed1c0c425e03172c77ba0f1465fe3ade79f2b2a)
+
+Bug: chromium:1172054
+Change-Id: I49bd22a0dc949bf869744d2ad25c1afcaea7fdbc
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2692532
+Reviewed-by: Guido Urdaneta <guidou@chromium.org>
+Commit-Queue: Harald Alvestrand <hta@chromium.org>
+Cr-Original-Original-Commit-Position: refs/heads/master@{#854050}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2709590
+Reviewed-by: Harald Alvestrand <hta@chromium.org>
+Cr-Original-Commit-Position: refs/branch-heads/4389@{#1280}
+Cr-Original-Branched-From: 9251c5db2b6d5a59fe4eac7aafa5fed37c139bb7-refs/heads/master@{#843830}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2726713
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Commit-Queue: Artem Sumaneev <asumaneev@google.com>
+Cr-Commit-Position: refs/branch-heads/4240@{#1555}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/third_party/blink/renderer/platform/p2p/socket_dispatcher.cc b/third_party/blink/renderer/platform/p2p/socket_dispatcher.cc
+index 29884a255f24556f4dc8b41b22304938a4f0d775..72ec477f57871b460adf83ea9e1a4bd217d5eebe 100644
+--- a/third_party/blink/renderer/platform/p2p/socket_dispatcher.cc
++++ b/third_party/blink/renderer/platform/p2p/socket_dispatcher.cc
+@@ -36,7 +36,7 @@ void P2PSocketDispatcher::RemoveNetworkListObserver(
+   network_list_observers_->RemoveObserver(network_list_observer);
+ }
+ 
+-network::mojom::blink::P2PSocketManager*
++mojo::SharedRemote<network::mojom::blink::P2PSocketManager>
+ P2PSocketDispatcher::GetP2PSocketManager() {
+   base::AutoLock lock(p2p_socket_manager_lock_);
+   if (!p2p_socket_manager_) {
+@@ -56,7 +56,7 @@ P2PSocketDispatcher::GetP2PSocketManager() {
+       *main_task_runner_.get(), FROM_HERE,
+       CrossThreadBindOnce(&P2PSocketDispatcher::RequestInterfaceIfNecessary,
+                           scoped_refptr<P2PSocketDispatcher>(this)));
+-  return p2p_socket_manager_.get();
++  return p2p_socket_manager_;
+ }
+ 
+ void P2PSocketDispatcher::NetworkListChanged(
+diff --git a/third_party/blink/renderer/platform/p2p/socket_dispatcher.h b/third_party/blink/renderer/platform/p2p/socket_dispatcher.h
+index c250d2af99d5291f34a7e3bfdb63fcbb70a5bd73..84e9c34c0896db5039d9cf8f51167d69ceec9be2 100644
+--- a/third_party/blink/renderer/platform/p2p/socket_dispatcher.h
++++ b/third_party/blink/renderer/platform/p2p/socket_dispatcher.h
+@@ -66,7 +66,8 @@ class PLATFORM_EXPORT P2PSocketDispatcher
+   void RemoveNetworkListObserver(
+       blink::NetworkListObserver* network_list_observer) override;
+ 
+-  network::mojom::blink::P2PSocketManager* GetP2PSocketManager();
++  mojo::SharedRemote<network::mojom::blink::P2PSocketManager>
++  GetP2PSocketManager();
+ 
+  private:
+   friend class base::RefCountedThreadSafe<P2PSocketDispatcher>;
+@@ -95,7 +96,7 @@ class PLATFORM_EXPORT P2PSocketDispatcher
+   mojo::PendingReceiver<network::mojom::blink::P2PSocketManager>
+       p2p_socket_manager_receiver_;
+   mojo::SharedRemote<network::mojom::blink::P2PSocketManager>
+-      p2p_socket_manager_;
++      p2p_socket_manager_ GUARDED_BY(p2p_socket_manager_lock_);
+   base::Lock p2p_socket_manager_lock_;
+ 
+   // Cached from last |NetworkListChanged| call.
diff --git a/patches/chromium/cherry-pick-b3dc4c4b349d.patch b/patches/chromium/cherry-pick-b3dc4c4b349d.patch
new file mode 100644
index 0000000000000..a052c3a25bad1
--- /dev/null
+++ b/patches/chromium/cherry-pick-b3dc4c4b349d.patch
@@ -0,0 +1,171 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Hongchan Choi <hongchan@chromium.org>
+Date: Tue, 2 Mar 2021 15:17:19 +0000
+Subject: Introduce AudioBuffers for user access in ScriptProcessorNode
+
+This CL adds new AudioBuffers for the access from the user code.
+
+(cherry picked from commit b9e60ddc7606689e508f295077656389380288ba)
+
+(cherry picked from commit c281886ca9ff22f6e75c8c1967dab9bf18b9942d)
+
+(cherry picked from commit 33861dcf6d15415b6abf2152440906fafb74a27a)
+
+Bug: 1177465
+Test: The local ASAN build doesn't reproduce on given POCs.
+Change-Id: Id9a3505ddb9ab61b4442385d0b830ef56f65f797
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2718543
+Auto-Submit: Hongchan Choi <hongchan@chromium.org>
+Reviewed-by: Raymond Toy <rtoy@chromium.org>
+Commit-Queue: Hongchan Choi <hongchan@chromium.org>
+Cr-Original-Original-Original-Commit-Position: refs/heads/master@{#857817}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2719239
+Reviewed-by: Krishna Govind <govind@chromium.org>
+Cr-Original-Original-Commit-Position: refs/branch-heads/4429@{#2}
+Cr-Original-Original-Branched-From: 19b974fae7ec51a60e2f1044d81e2e1b32be179b-refs/heads/master@{#857666}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2721252
+Reviewed-by: Adrian Taylor <adetaylor@google.com>
+Commit-Queue: Krishna Govind <govind@chromium.org>
+Cr-Original-Commit-Position: refs/branch-heads/4324@{#2250}
+Cr-Original-Branched-From: c73b5a651d37a6c4d0b8e3262cc4015a5579c6c8-refs/heads/master@{#827102}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2727696
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Commit-Queue: Artem Sumaneev <asumaneev@google.com>
+Cr-Commit-Position: refs/branch-heads/4240@{#1553}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/third_party/blink/renderer/modules/webaudio/script_processor_node.cc b/third_party/blink/renderer/modules/webaudio/script_processor_node.cc
+index 6e80b23a32dd1895a0d51d08ee16c8cb2d44fc55..d46e17440a9f3c2de488432bf3efdba5ac01f193 100644
+--- a/third_party/blink/renderer/modules/webaudio/script_processor_node.cc
++++ b/third_party/blink/renderer/modules/webaudio/script_processor_node.cc
+@@ -42,6 +42,28 @@
+ 
+ namespace blink {
+ 
++namespace {
++
++bool IsAudioBufferDetached(AudioBuffer* buffer) {
++  bool is_buffer_detached = false;
++  for (unsigned channel = 0; channel < buffer->numberOfChannels(); ++channel) {
++    if (buffer->getChannelData(channel)->buffer()->IsDetached()) {
++      is_buffer_detached = true;
++      break;
++    }
++  }
++
++  return is_buffer_detached;
++}
++
++bool BufferTopologyMatches(AudioBuffer* buffer_1, AudioBuffer* buffer_2) {
++  return (buffer_1->numberOfChannels() == buffer_2->numberOfChannels()) &&
++         (buffer_1->length() == buffer_2->length()) &&
++         (buffer_1->sampleRate() == buffer_2->sampleRate());
++}
++
++}  // namespace
++
+ ScriptProcessorHandler::ScriptProcessorHandler(
+     AudioNode& node,
+     float sample_rate,
+@@ -335,6 +357,12 @@ ScriptProcessorNode::ScriptProcessorNode(BaseAudioContext& context,
+     input_buffers_.push_back(input_buffer);
+     output_buffers_.push_back(output_buffer);
+   }
++
++  external_input_buffer_ = AudioBuffer::Create(
++      number_of_input_channels, buffer_size, sample_rate);
++  external_output_buffer_ = AudioBuffer::Create(
++      number_of_output_channels, buffer_size, sample_rate);
++
+   SetHandler(ScriptProcessorHandler::Create(
+       *this, sample_rate, buffer_size, number_of_input_channels,
+       number_of_output_channels, input_buffers_, output_buffers_));
+@@ -476,11 +504,62 @@ uint32_t ScriptProcessorNode::bufferSize() const {
+ 
+ void ScriptProcessorNode::DispatchEvent(double playback_time,
+                                         uint32_t double_buffer_index) {
+-  AudioBuffer* input_buffer = input_buffers_.at(double_buffer_index).Get();
+-  AudioBuffer* output_buffer = output_buffers_.at(double_buffer_index).Get();
+-  DCHECK(output_buffer);
++  DCHECK(IsMainThread());
++
++  AudioBuffer* backing_input_buffer =
++      input_buffers_.at(double_buffer_index).Get();
++
++  // The backing buffer can be nullptr, when the number of input channels is 0.
++  if (backing_input_buffer) {
++    // Also the author code might have transferred |external_input_buffer| to
++    // other threads or replaced it with a different AudioBuffer object. Then
++    // re-create a new buffer instance.
++    if (IsAudioBufferDetached(external_input_buffer_) ||
++        !BufferTopologyMatches(backing_input_buffer,
++                               external_input_buffer_)) {
++      external_input_buffer_ = AudioBuffer::Create(
++          backing_input_buffer->numberOfChannels(),
++          backing_input_buffer->length(),
++          backing_input_buffer->sampleRate());
++    }
++
++    for (unsigned channel = 0;
++         channel < backing_input_buffer->numberOfChannels(); ++channel) {
++      const float* source = static_cast<float*>(
++          backing_input_buffer->getChannelData(channel)->buffer()->Data());
++      float* destination = static_cast<float*>(
++          external_input_buffer_->getChannelData(channel)->buffer()->Data());
++      memcpy(destination, source,
++             backing_input_buffer->length() * sizeof(float));
++    }
++  }
++
+   AudioNode::DispatchEvent(*AudioProcessingEvent::Create(
+-      input_buffer, output_buffer, playback_time));
++      external_input_buffer_, external_output_buffer_, playback_time));
++
++  AudioBuffer* backing_output_buffer =
++      output_buffers_.at(double_buffer_index).Get();
++
++  if (backing_output_buffer) {
++    if (IsAudioBufferDetached(external_output_buffer_) ||
++        !BufferTopologyMatches(backing_output_buffer,
++                               external_output_buffer_)) {
++      external_output_buffer_ = AudioBuffer::Create(
++          backing_output_buffer->numberOfChannels(),
++          backing_output_buffer->length(),
++          backing_output_buffer->sampleRate());
++    }
++
++    for (unsigned channel = 0;
++         channel < backing_output_buffer->numberOfChannels(); ++channel) {
++      const float* source = static_cast<float*>(
++          external_output_buffer_->getChannelData(channel)->buffer()->Data());
++      float* destination = static_cast<float*>(
++          backing_output_buffer->getChannelData(channel)->buffer()->Data());
++      memcpy(destination, source,
++             backing_output_buffer->length() * sizeof(float));
++    }
++  }
+ }
+ 
+ bool ScriptProcessorNode::HasPendingActivity() const {
+@@ -499,6 +578,8 @@ bool ScriptProcessorNode::HasPendingActivity() const {
+ void ScriptProcessorNode::Trace(Visitor* visitor) const {
+   visitor->Trace(input_buffers_);
+   visitor->Trace(output_buffers_);
++  visitor->Trace(external_input_buffer_);
++  visitor->Trace(external_output_buffer_);
+   AudioNode::Trace(visitor);
+ }
+ 
+diff --git a/third_party/blink/renderer/modules/webaudio/script_processor_node.h b/third_party/blink/renderer/modules/webaudio/script_processor_node.h
+index a93dbacc70709c063b452be3e5fe4b56fcaf7c4a..ea5ad1c326d6eb202ba6b8eba0ac5b5d0f1f61b1 100644
+--- a/third_party/blink/renderer/modules/webaudio/script_processor_node.h
++++ b/third_party/blink/renderer/modules/webaudio/script_processor_node.h
+@@ -169,6 +169,8 @@ class ScriptProcessorNode final
+  private:
+   HeapVector<Member<AudioBuffer>> input_buffers_;
+   HeapVector<Member<AudioBuffer>> output_buffers_;
++  Member<AudioBuffer> external_input_buffer_;
++  Member<AudioBuffer> external_output_buffer_;
+ };
+ 
+ }  // namespace blink
diff --git a/patches/chromium/cherry-pick-b772b48067c4.patch b/patches/chromium/cherry-pick-b772b48067c4.patch
new file mode 100644
index 0000000000000..b6ef28a3c693b
--- /dev/null
+++ b/patches/chromium/cherry-pick-b772b48067c4.patch
@@ -0,0 +1,163 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Christoph Schwering <schwering@google.com>
+Date: Thu, 4 Mar 2021 17:21:46 +0000
+Subject: Limit preview and filling only for non-state fields.
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The number of times a value is filled into different fields is limited.
+The exception are state fields because websites sometimes have one
+state select box for each country and display the relevant select
+box once the respective country has been selected.
+
+This CL simplifies this mechanism and makes it more explicit by
+encoding the type-dependent limits in TypeValueFormFillingLimit().
+As a side effect, the limits apply not just to filled fields but also
+unfilled fields of the same type.
+
+(cherry picked from commit 18d3f86206e88156e2eb20c1f691b3b40a779150)
+
+Bug: 1075734, 1084903
+Change-Id: Icc5e8e082850ed44d9c7fbbc911d03a95033d81f
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2557977
+Commit-Queue: Matthias Körber <koerber@google.com>
+Reviewed-by: Matthias Körber <koerber@google.com>
+Auto-Submit: Christoph Schwering <schwering@google.com>
+Cr-Original-Commit-Position: refs/heads/master@{#830778}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2731409
+Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
+Commit-Queue: Victor-Gabriel Savu <vsavu@google.com>
+Cr-Commit-Position: refs/branch-heads/4240@{#1560}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/components/autofill/core/browser/autofill_manager.cc b/components/autofill/core/browser/autofill_manager.cc
+index 4e8321b85e329139012a5026b044d2c070750151..ded9c514894eee34a34eb562b08e7484673dfc4a 100644
+--- a/components/autofill/core/browser/autofill_manager.cc
++++ b/components/autofill/core/browser/autofill_manager.cc
+@@ -20,6 +20,7 @@
+ #include "base/check_op.h"
+ #include "base/command_line.h"
+ #include "base/containers/adapters.h"
++#include "base/containers/flat_map.h"
+ #include "base/feature_list.h"
+ #include "base/files/file_util.h"
+ #include "base/guid.h"
+@@ -424,9 +425,15 @@ const char* SubmissionSourceToString(SubmissionSource source) {
+ 
+ // Returns how many fields with type |field_type| may be filled in a form at
+ // maximum.
+-int TypeValueFormFillingLimit(ServerFieldType field_type) {
+-  return field_type == CREDIT_CARD_NUMBER ? kCreditCardTypeValueFormFillingLimit
+-                                          : kTypeValueFormFillingLimit;
++size_t TypeValueFormFillingLimit(ServerFieldType field_type) {
++  switch (field_type) {
++    case CREDIT_CARD_NUMBER:
++      return kCreditCardTypeValueFormFillingLimit;
++    case ADDRESS_HOME_STATE:
++      return kStateTypeValueFormFillingLimit;
++    default:
++      return kTypeValueFormFillingLimit;
++  }
+ }
+ 
+ }  // namespace
+@@ -1757,7 +1764,8 @@ void AutofillManager::FillOrPreviewDataModelForm(
+ 
+   // Count the number of times the value of a specific type was filled into the
+   // form.
+-  std::map<ServerFieldType, int> type_filling_count;
++  base::flat_map<ServerFieldType, size_t> type_filling_count;
++  type_filling_count.reserve(form_structure->field_count());
+ 
+   for (size_t i = 0; i < form_structure->field_count(); ++i) {
+     std::string field_number = base::StringPrintf("Field %zu", i);
+@@ -1841,7 +1849,7 @@ void AutofillManager::FillOrPreviewDataModelForm(
+ 
+     // A field with a specific type is only allowed to be filled a limited
+     // number of times given by |TypeValueFormFillingLimit(field_type)|.
+-    if (type_filling_count[field_type] >=
++    if (++type_filling_count[field_type] >
+         TypeValueFormFillingLimit(field_type)) {
+       buffer << Tr{} << field_number
+              << "Skipped: field-type filling-limit reached";
+@@ -1877,10 +1885,6 @@ void AutofillManager::FillOrPreviewDataModelForm(
+     bool has_value_after = !result.fields[i].value.empty();
+     bool is_autofilled_after = result.fields[i].is_autofilled;
+ 
+-    // If the field was actually filled, increment the filling counter.
+-    if (is_autofilled_after)
+-      type_filling_count[field_type]++;
+-
+     buffer << Tr{} << field_number
+            << base::StringPrintf(
+                   "Fillable - has value: %d->%d; autofilled: %d->%d. %s",
+diff --git a/components/autofill/core/browser/autofill_manager_unittest.cc b/components/autofill/core/browser/autofill_manager_unittest.cc
+index 79f827e5c8ea473d8c6e9bcef42d58427e278fc7..fd5973da9c997dc4c74489dd112b541f86d9bf57 100644
+--- a/components/autofill/core/browser/autofill_manager_unittest.cc
++++ b/components/autofill/core/browser/autofill_manager_unittest.cc
+@@ -2903,6 +2903,14 @@ TEST_F(AutofillManagerTest, OnlyCountFilledSelectionBoxesForTypeFillingLimit) {
+     form.fields.push_back(field);
+   }
+ 
++  // Create a selection box for the state that hat the correct entry to be
++  // filled with user data. Note, TN is the official abbreviation for Tennessee.
++  for (int i = 0; i < 20; ++i) {
++    test::CreateTestSelectField("Country", "country", "", {"DE", "FR", "US"},
++                                {"DE", "FR", "US"}, 3, &field);
++    form.fields.push_back(field);
++  }
++
+   std::vector<FormData> forms(1, form);
+   FormsSeen(forms);
+ 
+@@ -2939,17 +2947,18 @@ TEST_F(AutofillManagerTest, OnlyCountFilledSelectionBoxesForTypeFillingLimit) {
+                       response_data.fields[4 + i]);
+   }
+ 
+-  // Verify that the next 8 selection boxes are correctly filled again.
+-  for (int i = 0; i < 8; i++) {
++  // Verify that the remaining selection boxes are correctly filled again
++  // because there's no limit on filling ADDRESS_HOME_STATE fields.
++  for (int i = 0; i < 20; i++) {
+     ExpectFilledField("State", "state", "TN", "select-one",
+                       response_data.fields[24 + i]);
+   }
+ 
+-  // Verify that the last 12 boxes are not filled because the filling limit for
+-  // the state type is already reached.
+-  for (int i = 0; i < 12; i++) {
+-    ExpectFilledField("State", "state", "", "select-one",
+-                      response_data.fields[32 + i]);
++  // Verify that only the first 9 of the remaining selection boxes are
++  // correctly filled due to the limit on filling ADDRESS_HOME_COUNTRY fields.
++  for (int i = 0; i < 20; i++) {
++    ExpectFilledField("Country", "country", i < 9 ? "US" : "", "select-one",
++                      response_data.fields[44 + i]);
+   }
+ }
+ 
+diff --git a/components/autofill/core/common/autofill_constants.h b/components/autofill/core/common/autofill_constants.h
+index 84c5b916b0330ab8305db7b1831b42fa42843708..2d6ade5e6bea81ec4383d0345863514e1b551ea8 100644
+--- a/components/autofill/core/common/autofill_constants.h
++++ b/components/autofill/core/common/autofill_constants.h
+@@ -68,12 +68,14 @@ const int64_t kAutocompleteRetentionPolicyPeriodInDays = 14 * 31;
+ 
+ // Limits the number of times the value of a specific type can be filled into a
+ // form.
+-constexpr int kTypeValueFormFillingLimit = 9;
+-
+ // Credit card numbers are sometimes distributed between up to 19 individual
+-// fields. Therefore, credit cards need a higher limit compared to
+-// |kTypeValueFormFillingLimit|.
+-constexpr int kCreditCardTypeValueFormFillingLimit = 19;
++// fields. Therefore, credit cards need a higher limit.
++// State fields are effecectively unlimited because there are sometimes hidden
++// fields select boxes, each with a list of states for one specific countries,
++// which are displayed only upon country selection.
++constexpr size_t kTypeValueFormFillingLimit = 9;
++constexpr size_t kCreditCardTypeValueFormFillingLimit = 19;
++constexpr size_t kStateTypeValueFormFillingLimit = 1000;
+ 
+ }  // namespace autofill
+ 
diff --git a/patches/chromium/cherry-pick-bbb64b5c6916.patch b/patches/chromium/cherry-pick-bbb64b5c6916.patch
new file mode 100644
index 0000000000000..d9c5f1c48fa99
--- /dev/null
+++ b/patches/chromium/cherry-pick-bbb64b5c6916.patch
@@ -0,0 +1,81 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Daniel Cheng <dcheng@chromium.org>
+Date: Sat, 7 Nov 2020 19:07:34 +0000
+Subject: Prevent UB if a WeakPtr to an already-destroyed object is
+ dereferenced.
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+If a WeakPtr references an already-destroyed object, operator-> and
+operator* end up simply dereferencing nullptr. However, dereferencing
+nullptr is undefined behavior and can be optimized in surprising ways
+by compilers. To prevent this from happening, add a defence of last
+resort and CHECK that the WeakPtr is still valid.
+
+(cherry picked from commit 0b308a0e37b9d14a335c3b487511b7117c98d74b)
+
+Bug: 817982
+Change-Id: Ib3a025c18fbd9d5db88770fced2063135086847b
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2463857
+Commit-Queue: Daniel Cheng <dcheng@chromium.org>
+Reviewed-by: Wez <wez@chromium.org>
+Reviewed-by: Jan Wilken Dörrie <jdoerrie@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#816701}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2524521
+Reviewed-by: Adrian Taylor <adetaylor@chromium.org>
+Reviewed-by: Krishna Govind <govind@chromium.org>
+Commit-Queue: Krishna Govind <govind@chromium.org>
+Commit-Queue: Adrian Taylor <adetaylor@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1410}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/base/memory/weak_ptr.h b/base/memory/weak_ptr.h
+index 42aa3412c5ed13c8cdf94584e65e2549548ed125..63508a6043dd55572f0683681f01b238751c360f 100644
+--- a/base/memory/weak_ptr.h
++++ b/base/memory/weak_ptr.h
+@@ -248,11 +248,11 @@ class WeakPtr : public internal::WeakPtrBase {
+   }
+ 
+   T& operator*() const {
+-    DCHECK(get() != nullptr);
++    CHECK(ref_.IsValid());
+     return *get();
+   }
+   T* operator->() const {
+-    DCHECK(get() != nullptr);
++    CHECK(ref_.IsValid());
+     return get();
+   }
+ 
+diff --git a/base/memory/weak_ptr_unittest.cc b/base/memory/weak_ptr_unittest.cc
+index 6b1e9bf3c50d3da276c0d9d9de5322355719a61e..6425a88a36f716c58951f0bd52ef1979f598e895 100644
+--- a/base/memory/weak_ptr_unittest.cc
++++ b/base/memory/weak_ptr_unittest.cc
+@@ -798,4 +798,26 @@ TEST(WeakPtrDeathTest, NonOwnerThreadReferencesObjectAfterDeletion) {
+   ASSERT_DCHECK_DEATH(arrow.target.get());
+ }
+ 
++TEST(WeakPtrDeathTest, ArrowOperatorChecksOnBadDereference) {
++  // The default style "fast" does not support multi-threaded tests
++  // (introduces deadlock on Linux).
++  ::testing::FLAGS_gtest_death_test_style = "threadsafe";
++
++  auto target = std::make_unique<Target>();
++  WeakPtr<Target> weak = target->AsWeakPtr();
++  target.reset();
++  EXPECT_CHECK_DEATH(weak->AsWeakPtr());
++}
++
++TEST(WeakPtrDeathTest, StarOperatorChecksOnBadDereference) {
++  // The default style "fast" does not support multi-threaded tests
++  // (introduces deadlock on Linux).
++  ::testing::FLAGS_gtest_death_test_style = "threadsafe";
++
++  auto target = std::make_unique<Target>();
++  WeakPtr<Target> weak = target->AsWeakPtr();
++  target.reset();
++  EXPECT_CHECK_DEATH((*weak).AsWeakPtr());
++}
++
+ }  // namespace base
diff --git a/patches/chromium/cherry-pick-bbc6ab5bb49c.patch b/patches/chromium/cherry-pick-bbc6ab5bb49c.patch
new file mode 100644
index 0000000000000..8f84fdec21aaf
--- /dev/null
+++ b/patches/chromium/cherry-pick-bbc6ab5bb49c.patch
@@ -0,0 +1,187 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Adam Rice <ricea@chromium.org>
+Date: Wed, 2 Dec 2020 20:26:52 +0000
+Subject: Add ports 5060 and 5061 to the restricted list
+
+Some NAT devices examine traffic on port 5060 to look for a valid SIP
+message. If they find one, they will forward a port back to the origin
+host. A carefully crafted HTTP request can trick these NAT devices into
+forwarding an arbitrary port. See https://samy.pl/slipstream for more
+details on the attack and sample code.
+
+Block port 5060 for HTTP. Out of an abundance of caution, and to match
+the Fetch standard (https://github.com/whatwg/fetch/pull/1109), also
+block port 5061 (SIP over TLS).
+
+Also reduce the whitespace before protocol description comments. This
+was insisted on by clang-format and is not worth fighting.
+
+BUG=1145680
+
+(cherry picked from commit 90d1302aec437166b383eabc08af741bf24f7ea8)
+
+(cherry picked from commit dbb0452e69a49e803e0e4cbb6921d5ccad338716)
+
+Change-Id: I3a556fbbb4dc6099caa4418addaf1e89bf254ae3
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2519174
+Reviewed-by: Matt Menke <mmenke@chromium.org>
+Commit-Queue: Adam Rice <ricea@chromium.org>
+Cr-Original-Original-Commit-Position: refs/heads/master@{#824254}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2525474
+Reviewed-by: Adam Rice <ricea@chromium.org>
+Cr-Original-Commit-Position: refs/branch-heads/4280@{#1247}
+Cr-Original-Branched-From: ea420fb963f9658c9969b6513c56b8f47efa1a2a-refs/heads/master@{#812852}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2560585
+Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Commit-Queue: Artem Sumaneev <asumaneev@google.com>
+Cr-Commit-Position: refs/branch-heads/4240@{#1474}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/net/base/port_util.cc b/net/base/port_util.cc
+index a10a4b4038171b317a2a9ae6cd42aeb1166f5552..72af86dd6acf2db65a14b2f1bb2e3a241a1d043d 100644
+--- a/net/base/port_util.cc
++++ b/net/base/port_util.cc
+@@ -20,73 +20,75 @@ namespace {
+ // The general list of blocked ports. Will be blocked unless a specific
+ // protocol overrides it. (Ex: ftp can use ports 20 and 21)
+ const int kRestrictedPorts[] = {
+-    1,       // tcpmux
+-    7,       // echo
+-    9,       // discard
+-    11,      // systat
+-    13,      // daytime
+-    15,      // netstat
+-    17,      // qotd
+-    19,      // chargen
+-    20,      // ftp data
+-    21,      // ftp access
+-    22,      // ssh
+-    23,      // telnet
+-    25,      // smtp
+-    37,      // time
+-    42,      // name
+-    43,      // nicname
+-    53,      // domain
+-    77,      // priv-rjs
+-    79,      // finger
+-    87,      // ttylink
+-    95,      // supdup
+-    101,     // hostriame
+-    102,     // iso-tsap
+-    103,     // gppitnp
+-    104,     // acr-nema
+-    109,     // pop2
+-    110,     // pop3
+-    111,     // sunrpc
+-    113,     // auth
+-    115,     // sftp
+-    117,     // uucp-path
+-    119,     // nntp
+-    123,     // NTP
+-    135,     // loc-srv /epmap
+-    139,     // netbios
+-    143,     // imap2
+-    179,     // BGP
+-    389,     // ldap
+-    427,     // SLP (Also used by Apple Filing Protocol)
+-    465,     // smtp+ssl
+-    512,     // print / exec
+-    513,     // login
+-    514,     // shell
+-    515,     // printer
+-    526,     // tempo
+-    530,     // courier
+-    531,     // chat
+-    532,     // netnews
+-    540,     // uucp
+-    548,     // AFP (Apple Filing Protocol)
+-    556,     // remotefs
+-    563,     // nntp+ssl
+-    587,     // smtp (rfc6409)
+-    601,     // syslog-conn (rfc3195)
+-    636,     // ldap+ssl
+-    993,     // ldap+ssl
+-    995,     // pop3+ssl
+-    2049,    // nfs
+-    3659,    // apple-sasl / PasswordServer
+-    4045,    // lockd
+-    6000,    // X11
+-    6665,    // Alternate IRC [Apple addition]
+-    6666,    // Alternate IRC [Apple addition]
+-    6667,    // Standard IRC [Apple addition]
+-    6668,    // Alternate IRC [Apple addition]
+-    6669,    // Alternate IRC [Apple addition]
+-    6697,    // IRC + TLS
++    1,     // tcpmux
++    7,     // echo
++    9,     // discard
++    11,    // systat
++    13,    // daytime
++    15,    // netstat
++    17,    // qotd
++    19,    // chargen
++    20,    // ftp data
++    21,    // ftp access
++    22,    // ssh
++    23,    // telnet
++    25,    // smtp
++    37,    // time
++    42,    // name
++    43,    // nicname
++    53,    // domain
++    77,    // priv-rjs
++    79,    // finger
++    87,    // ttylink
++    95,    // supdup
++    101,   // hostriame
++    102,   // iso-tsap
++    103,   // gppitnp
++    104,   // acr-nema
++    109,   // pop2
++    110,   // pop3
++    111,   // sunrpc
++    113,   // auth
++    115,   // sftp
++    117,   // uucp-path
++    119,   // nntp
++    123,   // NTP
++    135,   // loc-srv /epmap
++    139,   // netbios
++    143,   // imap2
++    179,   // BGP
++    389,   // ldap
++    427,   // SLP (Also used by Apple Filing Protocol)
++    465,   // smtp+ssl
++    512,   // print / exec
++    513,   // login
++    514,   // shell
++    515,   // printer
++    526,   // tempo
++    530,   // courier
++    531,   // chat
++    532,   // netnews
++    540,   // uucp
++    548,   // AFP (Apple Filing Protocol)
++    556,   // remotefs
++    563,   // nntp+ssl
++    587,   // smtp (rfc6409)
++    601,   // syslog-conn (rfc3195)
++    636,   // ldap+ssl
++    993,   // ldap+ssl
++    995,   // pop3+ssl
++    2049,  // nfs
++    3659,  // apple-sasl / PasswordServer
++    4045,  // lockd
++    5060,  // sip
++    5061,  // sips
++    6000,  // X11
++    6665,  // Alternate IRC [Apple addition]
++    6666,  // Alternate IRC [Apple addition]
++    6667,  // Standard IRC [Apple addition]
++    6668,  // Alternate IRC [Apple addition]
++    6669,  // Alternate IRC [Apple addition]
++    6697,  // IRC + TLS
+ };
+ 
+ // FTP overrides the following restricted port.
diff --git a/patches/chromium/cherry-pick-c6d6f7aee733.patch b/patches/chromium/cherry-pick-c6d6f7aee733.patch
new file mode 100644
index 0000000000000..d6aad978db3e3
--- /dev/null
+++ b/patches/chromium/cherry-pick-c6d6f7aee733.patch
@@ -0,0 +1,70 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Lukasz Anforowicz <lukasza@chromium.org>
+Date: Thu, 4 Mar 2021 17:07:16 +0000
+Subject: M86-LTS: Destroy `url_loader_factories_` before other NetworkContext
+ fields
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+[M86 Merge]: Fixed conflict in network_context.h.
+
+(cherry picked from commit f2b091f02593c67fd67db936452f363102b8d035)
+
+(cherry picked from commit ffeb0731f83f8c4fa72776b658df45f0e6da041c)
+
+Bug: 1174943
+Change-Id: I7488c7779f51a3f0d82ecad3d65446032c065b26
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2679230
+Commit-Queue: Łukasz Anforowicz <lukasza@chromium.org>
+Reviewed-by: Matt Menke <mmenke@chromium.org>
+Cr-Original-Original-Commit-Position: refs/heads/master@{#852311}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2692489
+Reviewed-by: Łukasz Anforowicz <lukasza@chromium.org>
+Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
+Cr-Original-Commit-Position: refs/branch-heads/4389@{#986}
+Cr-Original-Branched-From: 9251c5db2b6d5a59fe4eac7aafa5fed37c139bb7-refs/heads/master@{#843830}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2731372
+Commit-Queue: Victor-Gabriel Savu <vsavu@google.com>
+Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1559}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/services/network/network_context.h b/services/network/network_context.h
+index 0d9c4cce09db485b5e750921eed703c75ffdf15a..3a88fd24b421411f086a31db34c07ed0f175d14f 100644
+--- a/services/network/network_context.h
++++ b/services/network/network_context.h
+@@ -604,13 +604,6 @@ class COMPONENT_EXPORT(NETWORK_SERVICE) NetworkContext
+   std::set<std::unique_ptr<ProxyLookupRequest>, base::UniquePtrComparator>
+       proxy_lookup_requests_;
+ 
+-  // This must be below |url_request_context_| so that the URLRequestContext
+-  // outlives all the URLLoaderFactories and URLLoaders that depend on it;
+-  // for the same reason, it must also be below |network_context_|.
+-  std::set<std::unique_ptr<cors::CorsURLLoaderFactory>,
+-           base::UniquePtrComparator>
+-      url_loader_factories_;
+-
+   std::set<std::unique_ptr<QuicTransport>, base::UniquePtrComparator>
+       quic_transports_;
+ 
+@@ -721,6 +714,19 @@ class COMPONENT_EXPORT(NETWORK_SERVICE) NetworkContext
+   // HttpAuthHandle via |NetworkContext::CreateHttpAuthHandlerFactory|.
+   net::HttpAuthPreferences http_auth_merged_preferences_;
+ 
++  // CorsURLLoaderFactory assumes that fields owned by the NetworkContext always
++  // live longer than the factory.  Therefore we want the factories to be
++  // destroyed before other fields above.  In particular:
++  // - This must be below |url_request_context_| so that the URLRequestContext
++  //   outlives all the URLLoaderFactories and URLLoaders that depend on it;
++  //   for the same reason, it must also be below |network_context_|.
++  // - This must be below |loader_count_per_process_| that is touched by
++  //   CorsURLLoaderFactory::DestroyURLLoader (see also
++  //   https://crbug.com/1174943).
++  std::set<std::unique_ptr<cors::CorsURLLoaderFactory>,
++           base::UniquePtrComparator>
++      url_loader_factories_;
++
+   base::WeakPtrFactory<NetworkContext> weak_factory_{this};
+ 
+   DISALLOW_COPY_AND_ASSIGN(NetworkContext);
diff --git a/patches/chromium/cherry-pick-d74ba931c4b7.patch b/patches/chromium/cherry-pick-d74ba931c4b7.patch
new file mode 100644
index 0000000000000..c8d9a2708ad58
--- /dev/null
+++ b/patches/chromium/cherry-pick-d74ba931c4b7.patch
@@ -0,0 +1,110 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Achuith Bhandarkar <achuith@chromium.org>
+Date: Wed, 13 Jan 2021 21:27:05 +0000
+Subject: content-visibility: Don't adjust position of a locked hittest result
+ node.
+
+This patch ensures that if we have a hittest result that has a locked
+node, we don't try to recurse into its subtree. This can happen when we
+do a PositionWithAffinity check.
+
+R=chrishtr@chromium.org
+
+(cherry picked from commit 8483cf6944e38203c3b247163c54cfa105e89c56)
+
+(cherry picked from commit 3f7b67374a1121b6756ccfd2e4e414987f167489)
+
+Bug: 1162131
+Change-Id: I357bd7032c6c2b6c9405bf26c49a36bda22d6a0d
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2611453
+Reviewed-by: Chris Harrelson <chrishtr@chromium.org>
+Commit-Queue: vmpstr <vmpstr@chromium.org>
+Cr-Original-Original-Commit-Position: refs/heads/master@{#840727}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2618603
+Reviewed-by: Xianzhu Wang <wangxianzhu@chromium.org>
+Reviewed-by: Krishna Govind <govind@chromium.org>
+Cr-Original-Commit-Position: refs/branch-heads/4324@{#1566}
+Cr-Original-Branched-From: c73b5a651d37a6c4d0b8e3262cc4015a5579c6c8-refs/heads/master@{#827102}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2618982
+Commit-Queue: Achuith Bhandarkar <achuith@chromium.org>
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Cr-Commit-Position: refs/branch-heads/4240@{#1520}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/third_party/blink/renderer/core/layout/hit_test_result.cc b/third_party/blink/renderer/core/layout/hit_test_result.cc
+index 1359aa6bdd532028d8280b093a4381a70e4a7577..9d02cabafa3b8acc19ae2c0007c0eb6b86f1fb5d 100644
+--- a/third_party/blink/renderer/core/layout/hit_test_result.cc
++++ b/third_party/blink/renderer/core/layout/hit_test_result.cc
+@@ -21,12 +21,14 @@
+ 
+ #include "third_party/blink/renderer/core/layout/hit_test_result.h"
+ 
++#include "third_party/blink/renderer/core/display_lock/display_lock_utilities.h"
+ #include "third_party/blink/renderer/core/dom/flat_tree_traversal.h"
+ #include "third_party/blink/renderer/core/dom/pseudo_element.h"
+ #include "third_party/blink/renderer/core/dom/shadow_root.h"
+ #include "third_party/blink/renderer/core/editing/editing_utilities.h"
+ #include "third_party/blink/renderer/core/editing/frame_selection.h"
+ #include "third_party/blink/renderer/core/editing/position_with_affinity.h"
++#include "third_party/blink/renderer/core/editing/text_affinity.h"
+ #include "third_party/blink/renderer/core/editing/visible_units.h"
+ #include "third_party/blink/renderer/core/frame/local_frame.h"
+ #include "third_party/blink/renderer/core/frame/visual_viewport.h"
+@@ -144,6 +146,20 @@ PositionWithAffinity HitTestResult::GetPosition() const {
+   LayoutObject* layout_object = GetLayoutObject();
+   if (!layout_object)
+     return PositionWithAffinity();
++
++  // We should never have a layout object that is within a locked subtree.
++  CHECK(!DisplayLockUtilities::NearestLockedExclusiveAncestor(*layout_object));
++
++  // If the layout object is blocked by display lock, we return the beginning of
++  // the node as the position. This is because we don't paint contents of the
++  // element. Furthermore, any caret adjustments below can access layout-dirty
++  // state in the subtree of this object.
++  if (layout_object->PaintBlockedByDisplayLock(
++          DisplayLockLifecycleTarget::kChildren)) {
++    return PositionWithAffinity(Position(*inner_node_, 0),
++                                TextAffinity::kDefault);
++  }
++
+   if (inner_possibly_pseudo_node_->IsPseudoElement() &&
+       inner_possibly_pseudo_node_->GetPseudoId() == kPseudoIdBefore) {
+     return PositionWithAffinity(MostForwardCaretPosition(
+diff --git a/third_party/blink/web_tests/external/wpt/css/css-contain/content-visibility/content-visibility-080.html b/third_party/blink/web_tests/external/wpt/css/css-contain/content-visibility/content-visibility-080.html
+new file mode 100644
+index 0000000000000000000000000000000000000000..d3cea5fb83767ddfc236850097387644e0f74c8e
+--- /dev/null
++++ b/third_party/blink/web_tests/external/wpt/css/css-contain/content-visibility/content-visibility-080.html
+@@ -0,0 +1,31 @@
++<!doctype HTML>
++<html id=html>
++<meta charset="utf8">
++<title>Content Visibility: caret position with html hidden</title>
++<link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org">
++<link rel="help" href="https://drafts.csswg.org/css-contain/#content-visibility">
++<meta name="assert" content="caretRangeFromPoint works even if html has content-visibility hidden">
++
++<script src="/resources/testharness.js"></script>
++<script src="/resources/testharnessreport.js"></script>
++
++<meter></meter>
++<iframe></iframe>
++<style>
++* {
++  all: initial;
++  content-visibility: hidden;
++}
++</style>
++
++<script>
++test(() => {
++  const range = document.caretRangeFromPoint();
++  assert_not_equals(range, null, "range exists");
++  assert_equals(range.startContainer, html, "startContainer is html");
++  assert_equals(range.startOffset, 0, "startOffset is zero");
++  assert_equals(range.endContainer, html, "endContainer is html");
++  assert_equals(range.endOffset, 0, "endOffset is zero");
++}, "Caret range from point");
++</script>
++</html>
diff --git a/patches/chromium/cherry-pick-d866af575997.patch b/patches/chromium/cherry-pick-d866af575997.patch
new file mode 100644
index 0000000000000..329b3f6c951c9
--- /dev/null
+++ b/patches/chromium/cherry-pick-d866af575997.patch
@@ -0,0 +1,39 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Raymond Toy <rtoy@chromium.org>
+Date: Mon, 7 Dec 2020 17:55:30 +0000
+Subject: Clear handlers when the base context goes away.
+
+Previously, in BaseAudioContext::Clear() we called
+GetDeferredTaskHandler().ClearHandlersToBeDeleted().  But this was
+also called in DeferredTaskHandler::ContextWillBeDestroyed(), which is
+called in BaseAudioContext::~BaseAudioContext().
+
+There's no need to call this twice while handling the audio context
+going away.
+
+Manually verified that the tests from issue 1125635 and 1153658 work,
+and the deadlock in issue 1136571 is gone.
+
+Bug: 1150065, 1153658
+Change-Id: Iee15c31dc637bf82d66bfd79d5238b1f80813153
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2575418
+Commit-Queue: Raymond Toy <rtoy@chromium.org>
+Reviewed-by: Hongchan Choi <hongchan@chromium.org>
+Cr-Commit-Position: refs/heads/master@{#834265}
+
+diff --git a/third_party/blink/renderer/modules/webaudio/base_audio_context.cc b/third_party/blink/renderer/modules/webaudio/base_audio_context.cc
+index e203973a516c630af3decaddc1080ab9697c634a..cd16a1f31fb4d8469f35a8c5e08c51d15efb0cf8 100644
+--- a/third_party/blink/renderer/modules/webaudio/base_audio_context.cc
++++ b/third_party/blink/renderer/modules/webaudio/base_audio_context.cc
+@@ -142,9 +142,8 @@ void BaseAudioContext::Initialize() {
+ 
+ void BaseAudioContext::Clear() {
+   destination_node_.Clear();
+-  // The audio rendering thread is dead.  Nobody will schedule AudioHandler
+-  // deletion.  Let's do it ourselves.
+-  GetDeferredTaskHandler().ClearHandlersToBeDeleted();
++  // Make a note that we've cleared out the context so that there's no pending
++  // activity.
+   is_cleared_ = true;
+ }
+ 
diff --git a/patches/chromium/cherry-pick-d8d64b7cd244.patch b/patches/chromium/cherry-pick-d8d64b7cd244.patch
new file mode 100644
index 0000000000000..ce242772d748d
--- /dev/null
+++ b/patches/chromium/cherry-pick-d8d64b7cd244.patch
@@ -0,0 +1,132 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Xianzhu Wang <wangxianzhu@chromium.org>
+Date: Mon, 16 Nov 2020 17:26:33 +0000
+Subject: Ensure change type for OverflowControlsClip is returned
+
+This at least ensures that we will update the paint properites for the
+composited overflow control layers in pre-CompositeAfterPaint to avoid
+stale properties on the layers.
+
+The test doesn't actually reproduce the bug because any test simpler
+than the bug case couldn't reproduce the bug as the update would be
+triggered in other code paths (any style change, layout change, etc.).
+
+Anyway this CL does fix the bug case.
+
+TBR=wangxianzhu@chromium.org
+
+(cherry picked from commit c20bb9897ef6d26a46391a4dc1658c5d33e0c100)
+
+(cherry picked from commit cfb81e677a508871f56d8bec958d0b585298ae0c)
+
+Bug: 1137603
+Change-Id: I5cca970bcf8cda6085527f79a97f269c4e3e9986
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2500264
+Reviewed-by: Stefan Zager <szager@chromium.org>
+Commit-Queue: Xianzhu Wang <wangxianzhu@chromium.org>
+Cr-Original-Original-Commit-Position: refs/heads/master@{#820986}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2536910
+Reviewed-by: Xianzhu Wang <wangxianzhu@chromium.org>
+Cr-Original-Commit-Position: refs/branch-heads/4240@{#1446}
+Cr-Original-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2540592
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Commit-Queue: Jana Grill <janagrill@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240_112@{#26}
+Cr-Branched-From: 427c00d3874b6abcf4c4c2719768835fc3ef26d6-refs/branch-heads/4240@{#1291}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/third_party/blink/renderer/core/paint/compositing/compositing_layer_property_updater_test.cc b/third_party/blink/renderer/core/paint/compositing/compositing_layer_property_updater_test.cc
+index e991dfac93cfa90f46b92e00c4f29318736bc7ba..b42f1d6bd9b04f293034ee97c8eaa7aa10390ac9 100644
+--- a/third_party/blink/renderer/core/paint/compositing/compositing_layer_property_updater_test.cc
++++ b/third_party/blink/renderer/core/paint/compositing/compositing_layer_property_updater_test.cc
+@@ -174,4 +174,56 @@ TEST_F(CompositingLayerPropertyUpdaterTest,
+   }
+ }
+ 
++TEST_F(CompositingLayerPropertyUpdaterTest, OverflowControlsClip) {
++  SetBodyInnerHTML(R"HTML(
++    <style>
++      ::-webkit-scrollbar { width: 20px; }
++      #container {
++        width: 5px;
++        height: 100px;
++      }
++      #target {
++        overflow: scroll;
++        will-change: transform;
++        width: 100%;
++        height: 100%;
++      }
++    </style>
++    <div id="container">
++      <div id="target"></div>
++    </div>
++  )HTML");
++
++  // Initially the vertical scrollbar overflows the narrow border box.
++  auto* container = GetDocument().getElementById("container");
++  auto* target = ToLayoutBox(GetLayoutObjectByElementId("target"));
++  auto* scrollbar_layer =
++      target->GetScrollableArea()->GraphicsLayerForVerticalScrollbar();
++  auto target_state = target->FirstFragment().LocalBorderBoxProperties();
++  auto scrollbar_state = target_state;
++  auto* overflow_controls_clip =
++      target->FirstFragment().PaintProperties()->OverflowControlsClip();
++  ASSERT_TRUE(overflow_controls_clip);
++  scrollbar_state.SetClip(*overflow_controls_clip);
++  EXPECT_EQ(scrollbar_state, scrollbar_layer->GetPropertyTreeState());
++
++  // Widen target to make the vertical scrollbar contained by the border box.
++  container->setAttribute(html_names::kStyleAttr, "width: 100px");
++  UpdateAllLifecyclePhasesForTest();
++  LOG(ERROR) << target->Size();
++  EXPECT_FALSE(
++      target->FirstFragment().PaintProperties()->OverflowControlsClip());
++  EXPECT_EQ(target_state, scrollbar_layer->GetPropertyTreeState());
++
++  // Narrow down target back.
++  container->removeAttribute(html_names::kStyleAttr);
++  UpdateAllLifecyclePhasesForTest();
++  scrollbar_state = target_state;
++  overflow_controls_clip =
++      target->FirstFragment().PaintProperties()->OverflowControlsClip();
++  ASSERT_TRUE(overflow_controls_clip);
++  scrollbar_state.SetClip(*overflow_controls_clip);
++  EXPECT_EQ(scrollbar_state, scrollbar_layer->GetPropertyTreeState());
++}
++
+ }  // namespace blink
+diff --git a/third_party/blink/renderer/core/paint/paint_property_tree_builder.cc b/third_party/blink/renderer/core/paint/paint_property_tree_builder.cc
+index 0702a0fc65a69ab1da2cceeb4e6dcb9be30c8d3b..527024f5b1e9c71d7ad5311805c81c3587a7dc32 100644
+--- a/third_party/blink/renderer/core/paint/paint_property_tree_builder.cc
++++ b/third_party/blink/renderer/core/paint/paint_property_tree_builder.cc
+@@ -1554,21 +1554,21 @@ void FragmentPaintPropertyTreeBuilder::UpdateOverflowControlsClip() {
+ 
+   if (NeedsOverflowControlsClip()) {
+     // Clip overflow controls to the border box rect. Not wrapped with
+-    // OnUpdateClip() because this clip doesn't affect descendants.
++    // OnUpdateClip() because this clip doesn't affect descendants. Wrap with
++    // OnUpdate() to let PrePaintTreeWalk see the change. This may cause
++    // unnecessary subtree update, but is not a big deal because it is rare.
+     const auto& clip_rect = PhysicalRect(context_.current.paint_offset,
+                                          ToLayoutBox(object_).Size());
+-    properties_->UpdateOverflowControlsClip(
++    OnUpdate(properties_->UpdateOverflowControlsClip(
+         *context_.current.clip,
+         ClipPaintPropertyNode::State(context_.current.transform,
+                                      FloatRoundedRect(FloatRect(clip_rect)),
+-                                     ToSnappedClipRect(clip_rect)));
++                                     ToSnappedClipRect(clip_rect))));
+   } else {
+-    properties_->ClearOverflowControlsClip();
++    OnClear(properties_->ClearOverflowControlsClip());
+   }
+ 
+-  // No need to set force_subtree_update_reasons and clip_changed because
+-  // OverflowControlsClip applies to overflow controls only, not descendants.
+-  // We also don't walk into custom scrollbars in PrePaintTreeWalk and
++  // We don't walk into custom scrollbars in PrePaintTreeWalk because
+   // LayoutObjects under custom scrollbars don't support paint properties.
+ }
+ 
diff --git a/patches/chromium/cherry-pick-da9b5ec032ad.patch b/patches/chromium/cherry-pick-da9b5ec032ad.patch
new file mode 100644
index 0000000000000..4522e347fa3eb
--- /dev/null
+++ b/patches/chromium/cherry-pick-da9b5ec032ad.patch
@@ -0,0 +1,81 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Daniele Castagna <dcastagna@chromium.org>
+Date: Mon, 14 Dec 2020 23:03:31 +0000
+Subject: viz: Destroy |gpu_memory_buffer_factory_| on IOThread
+
+|gpu_memory_buffer_factory_| weak pointers are checked on the
+IOThread.
+Weak pointers should be invalidated on the same thread that
+checks them.
+
+This CL moves the destruction of |gpu_memory_buffer_factory_|
+on the IOThread to avoid possible use after free issues.
+
+Bug: 1152645
+
+Change-Id: I0d42814f0e435a3746728515da1f32d08a1252cf
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2563077
+Commit-Queue: Daniele Castagna <dcastagna@chromium.org>
+Reviewed-by: Andres Calderon Jaramillo <andrescj@chromium.org>
+Cr-Commit-Position: refs/heads/master@{#836827}
+
+diff --git a/components/viz/service/gl/gpu_service_impl.cc b/components/viz/service/gl/gpu_service_impl.cc
+index 98cdbff9bf021f9665abdb339a25753b2e7b4807..6ab1e86035089b748eb636cc5e654702ee19fd9e 100644
+--- a/components/viz/service/gl/gpu_service_impl.cc
++++ b/components/viz/service/gl/gpu_service_impl.cc
+@@ -428,16 +428,18 @@ GpuServiceImpl::~GpuServiceImpl() {
+   GetLogMessageManager()->ShutdownLogging();
+ 
+   // Destroy the receiver on the IO thread.
+-  base::WaitableEvent wait;
+-  auto destroy_receiver_task = base::BindOnce(
+-      [](mojo::Receiver<mojom::GpuService>* receiver,
+-         base::WaitableEvent* wait) {
+-        receiver->reset();
+-        wait->Signal();
+-      },
+-      &receiver_, &wait);
+-  if (io_runner_->PostTask(FROM_HERE, std::move(destroy_receiver_task)))
+-    wait.Wait();
++  {
++    base::WaitableEvent wait;
++    auto destroy_receiver_task = base::BindOnce(
++        [](mojo::Receiver<mojom::GpuService>* receiver,
++           base::WaitableEvent* wait) {
++          receiver->reset();
++          wait->Signal();
++        },
++        &receiver_, base::Unretained(&wait));
++    if (io_runner_->PostTask(FROM_HERE, std::move(destroy_receiver_task)))
++      wait.Wait();
++  }
+ 
+   if (watchdog_thread_)
+     watchdog_thread_->OnGpuProcessTearDown();
+@@ -445,6 +447,26 @@ GpuServiceImpl::~GpuServiceImpl() {
+   media_gpu_channel_manager_.reset();
+   gpu_channel_manager_.reset();
+ 
++  // Destroy |gpu_memory_buffer_factory_| on the IO thread since its weakptrs
++  // are checked there.
++  {
++    base::WaitableEvent wait;
++    auto destroy_gmb_factory = base::BindOnce(
++        [](std::unique_ptr<gpu::GpuMemoryBufferFactory> gmb_factory,
++           base::WaitableEvent* wait) {
++          gmb_factory.reset();
++          wait->Signal();
++        },
++        std::move(gpu_memory_buffer_factory_), base::Unretained(&wait));
++
++    if (io_runner_->PostTask(FROM_HERE, std::move(destroy_gmb_factory))) {
++      // |gpu_memory_buffer_factory_| holds a raw pointer to
++      // |vulkan_context_provider_|. Waiting here enforces the correct order
++      // of destruction.
++      wait.Wait();
++    }
++  }
++
+   // Scheduler must be destroyed before sync point manager is destroyed.
+   scheduler_.reset();
+   owned_sync_point_manager_.reset();
diff --git a/patches/chromium/cherry-pick-dea071d8b30f.patch b/patches/chromium/cherry-pick-dea071d8b30f.patch
new file mode 100644
index 0000000000000..0664e2e2efde4
--- /dev/null
+++ b/patches/chromium/cherry-pick-dea071d8b30f.patch
@@ -0,0 +1,121 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Hongchan Choi <hongchan@chromium.org>
+Date: Tue, 2 Mar 2021 15:15:59 +0000
+Subject: Prevent accessing shared buffers from audio rendering thread
+
+The shared buffer in ScriptProcessorNode can be accessed by the
+audio rendering thread when it is held by the main thread.
+
+The solution suggested here is simply to expand the scope of
+the mutex to minimize the code change. This is a deprecated
+feature in Web Audio, so making significant changes is not
+sensible. By locking the entire scope of Process() call, this
+area would be immune to the similar problems in the future.
+
+(cherry picked from commit 60987aa224f369fc0ea38c56e498389440921356)
+
+(cherry picked from commit aeb6bc551b607e0c80c232ed4817c0ff5e9a7784)
+
+Bug: 1174582
+Test: The repro case doesn't crash on ASAN.
+Change-Id: I2b292f94be65e6ec26c6eb0e0ed32b3fb2d88466
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2681193
+Commit-Queue: Hongchan Choi <hongchan@chromium.org>
+Reviewed-by: Raymond Toy <rtoy@chromium.org>
+Cr-Original-Original-Commit-Position: refs/heads/master@{#852240}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2715585
+Commit-Queue: Krishna Govind <govind@chromium.org>
+Reviewed-by: Srinivas Sista <srinivassista@chromium.org>
+Cr-Original-Commit-Position: refs/branch-heads/4324@{#2238}
+Cr-Original-Branched-From: c73b5a651d37a6c4d0b8e3262cc4015a5579c6c8-refs/heads/master@{#827102}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2726911
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Commit-Queue: Artem Sumaneev <asumaneev@google.com>
+Cr-Commit-Position: refs/branch-heads/4240@{#1552}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/third_party/blink/renderer/modules/webaudio/script_processor_node.cc b/third_party/blink/renderer/modules/webaudio/script_processor_node.cc
+index b1ca691b07b53b927a92753906f7f25edebac919..6e80b23a32dd1895a0d51d08ee16c8cb2d44fc55 100644
+--- a/third_party/blink/renderer/modules/webaudio/script_processor_node.cc
++++ b/third_party/blink/renderer/modules/webaudio/script_processor_node.cc
+@@ -110,6 +110,14 @@ void ScriptProcessorHandler::Initialize() {
+ }
+ 
+ void ScriptProcessorHandler::Process(uint32_t frames_to_process) {
++  // The main thread might be accessing the shared buffers. If so, silience
++  // the output and return.
++  MutexTryLocker try_locker(process_event_lock_);
++  if (!try_locker.Locked()) {
++    Output(0).Bus()->Zero();
++    return;
++  }
++
+   // Discussion about inputs and outputs:
+   // As in other AudioNodes, ScriptProcessorNode uses an AudioBus for its input
+   // and output (see inputBus and outputBus below).  Additionally, there is a
+@@ -181,47 +189,26 @@ void ScriptProcessorHandler::Process(uint32_t frames_to_process) {
+   buffer_read_write_index_ =
+       (buffer_read_write_index_ + frames_to_process) % BufferSize();
+ 
+-  // m_bufferReadWriteIndex will wrap back around to 0 when the current input
+-  // and output buffers are full.
+-  // When this happens, fire an event and swap buffers.
++  // Fire an event and swap buffers when |buffer_read_write_index_| wraps back
++  // around to 0. It means the current input and output buffers are full.
+   if (!buffer_read_write_index_) {
+-    // Avoid building up requests on the main thread to fire process events when
+-    // they're not being handled.  This could be a problem if the main thread is
+-    // very busy doing other things and is being held up handling previous
+-    // requests.  The audio thread can't block on this lock, so we call
+-    // tryLock() instead.
+-    MutexTryLocker try_locker(process_event_lock_);
+-    if (!try_locker.Locked()) {
+-      // We're late in handling the previous request. The main thread must be
+-      // very busy.  The best we can do is clear out the buffer ourself here.
+-      shared_output_buffer->Zero();
++    if (Context()->HasRealtimeConstraint()) {
++      // For a realtime context, fire an event and do not wait.
++      PostCrossThreadTask(
++          *task_runner_, FROM_HERE,
++          CrossThreadBindOnce(&ScriptProcessorHandler::FireProcessEvent,
++                              AsWeakPtr(), double_buffer_index_));
+     } else {
+-      // With the realtime context, execute the script code asynchronously
+-      // and do not wait.
+-      if (Context()->HasRealtimeConstraint()) {
+-        // Fire the event on the main thread with the appropriate buffer
+-        // index.
+-        PostCrossThreadTask(
+-            *task_runner_, FROM_HERE,
+-            CrossThreadBindOnce(&ScriptProcessorHandler::FireProcessEvent,
+-                                AsWeakPtr(), double_buffer_index_));
+-      } else {
+-        // If this node is in the offline audio context, use the
+-        // waitable event to synchronize to the offline rendering thread.
+-        std::unique_ptr<base::WaitableEvent> waitable_event =
+-            std::make_unique<base::WaitableEvent>();
+-
+-        PostCrossThreadTask(
+-            *task_runner_, FROM_HERE,
+-            CrossThreadBindOnce(
+-                &ScriptProcessorHandler::FireProcessEventForOfflineAudioContext,
+-                AsWeakPtr(), double_buffer_index_,
+-                CrossThreadUnretained(waitable_event.get())));
+-
+-        // Okay to block the offline audio rendering thread since it is
+-        // not the actual audio device thread.
+-        waitable_event->Wait();
+-      }
++      // For an offline context, wait until the script execution is finished.
++      std::unique_ptr<base::WaitableEvent> waitable_event =
++          std::make_unique<base::WaitableEvent>();
++      PostCrossThreadTask(
++          *task_runner_, FROM_HERE,
++          CrossThreadBindOnce(
++              &ScriptProcessorHandler::FireProcessEventForOfflineAudioContext,
++              AsWeakPtr(), double_buffer_index_,
++              CrossThreadUnretained(waitable_event.get())));
++      waitable_event->Wait();
+     }
+ 
+     SwapBuffers();
diff --git a/patches/chromium/cherry-pick-df438f22f7d2.patch b/patches/chromium/cherry-pick-df438f22f7d2.patch
new file mode 100644
index 0000000000000..7931fef0fb12b
--- /dev/null
+++ b/patches/chromium/cherry-pick-df438f22f7d2.patch
@@ -0,0 +1,146 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Artem Sumaneev <asumaneev@google.com>
+Date: Wed, 3 Feb 2021 15:00:25 +0000
+Subject: Fix navigation request reset logic
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Do not delete navigation request which has started upon receiving
+notification about beforeunload dialog being cancelled, as a) this
+navigation request is not waiting for beforeunload and b) it might have
+been this navigation request which canceled this beforeunload dialog.
+
+M86 merge conflicts and resolution:
+* content/browser/frame_host/*
+  In ToT files the affected under frame_host directory are moved to
+  renderer_host dir. Applied patch to frame_host, no further conflicts.
+
+R=​alexmos@chromium.org
+BUG=1161705
+
+(cherry picked from commit 23c110b5b81dc401ded5d4dcecfab65d5d88fdfa)
+
+(cherry picked from commit 87550e04d9fed4bbedff4546f4161e3c02415d7e)
+
+Change-Id: I7d385d4326fac6f67d17a003679471806b5ad3b2
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2624733
+Commit-Queue: Alexander Timin <altimin@chromium.org>
+Reviewed-by: Alex Moshchuk <alexmos@chromium.org>
+Cr-Original-Original-Commit-Position: refs/heads/master@{#843343}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2652791
+Commit-Queue: Alex Moshchuk <alexmos@chromium.org>
+Auto-Submit: Alexander Timin <altimin@chromium.org>
+Cr-Original-Commit-Position: refs/branch-heads/4324@{#2040}
+Cr-Original-Branched-From: c73b5a651d37a6c4d0b8e3262cc4015a5579c6c8-refs/heads/master@{#827102}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2666397
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Commit-Queue: Artem Sumaneev <asumaneev@google.com>
+Cr-Commit-Position: refs/branch-heads/4240@{#1537}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/content/browser/frame_host/frame_tree_node.cc b/content/browser/frame_host/frame_tree_node.cc
+index a1c72899b940d942bccf25c617ded87081f67901..754563aa43df66edc473e58106200a4b6923716a 100644
+--- a/content/browser/frame_host/frame_tree_node.cc
++++ b/content/browser/frame_host/frame_tree_node.cc
+@@ -578,10 +578,12 @@ void FrameTreeNode::BeforeUnloadCanceled() {
+       render_manager_.speculative_frame_host();
+   if (speculative_frame_host)
+     speculative_frame_host->ResetLoadingState();
+-  // Note: there is no need to set an error code on the NavigationHandle here
+-  // as it has not been created yet. It is only created when the
+-  // BeforeUnloadCompleted callback is invoked.
+-  if (navigation_request_)
++  // Note: there is no need to set an error code on the NavigationHandle as
++  // the observers have not been notified about its creation.
++  // We also reset navigation request only when this navigation request was
++  // responsible for this dialog, as a new navigation request might cancel
++  // existing unrelated dialog.
++  if (navigation_request_ && navigation_request_->IsWaitingForBeforeUnload())
+     ResetNavigationRequest(false);
+ }
+ 
+diff --git a/content/browser/frame_host/navigation_request.cc b/content/browser/frame_host/navigation_request.cc
+index 764e1f007b44bda5191e9021be59ab21446f6e55..498a8c3d8bcbea3b411901eaca9544ac5037308e 100644
+--- a/content/browser/frame_host/navigation_request.cc
++++ b/content/browser/frame_host/navigation_request.cc
+@@ -4899,4 +4899,8 @@ void NavigationRequest::UpdateCoopStatus(
+   }
+ }
+ 
++bool NavigationRequest::IsWaitingForBeforeUnload() {
++  return state_ < WILL_START_NAVIGATION;
++}
++
+ }  // namespace content
+diff --git a/content/browser/frame_host/navigation_request.h b/content/browser/frame_host/navigation_request.h
+index 9db96ba9e042507b465821dbb0632317f1f0de70..e6f6e83e7013bd13b504969a8ebfbf5f1428eb2f 100644
+--- a/content/browser/frame_host/navigation_request.h
++++ b/content/browser/frame_host/navigation_request.h
+@@ -670,6 +670,10 @@ class CONTENT_EXPORT NavigationRequest
+   // navigation or an error page.
+   bool IsWaitingToCommit();
+ 
++  // Whether this navigation request waits for the result of beforeunload before
++  // proceeding.
++  bool IsWaitingForBeforeUnload();
++
+  private:
+   friend class NavigationRequestTest;
+ 
+diff --git a/content/browser/frame_host/render_frame_host_impl_browsertest.cc b/content/browser/frame_host/render_frame_host_impl_browsertest.cc
+index 089a0f08c96e7cb366659c633e2fdf5f61904f4c..bf7e8c0706f7694878b817312f4b7f8339d6645e 100644
+--- a/content/browser/frame_host/render_frame_host_impl_browsertest.cc
++++ b/content/browser/frame_host/render_frame_host_impl_browsertest.cc
+@@ -1113,6 +1113,51 @@ IN_PROC_BROWSER_TEST_F(RenderFrameHostImplBeforeUnloadBrowserTest,
+ 
+ namespace {
+ 
++class OnDidStartNavigation : public WebContentsObserver {
++ public:
++  OnDidStartNavigation(WebContents* web_contents,
++                       base::RepeatingClosure callback)
++      : WebContentsObserver(web_contents), callback_(callback) {}
++
++  void DidStartNavigation(NavigationHandle* navigation) override {
++    callback_.Run();
++  }
++
++ private:
++  base::RepeatingClosure callback_;
++};
++
++}  // namespace
++
++// This test closes beforeunload dialog due to a new navigation starting from
++// within WebContentsObserver::DidStartNavigation. This test succeeds if it
++// doesn't crash with a UAF while loading the second page.
++IN_PROC_BROWSER_TEST_F(RenderFrameHostImplBeforeUnloadBrowserTest,
++                       DidStartNavigationClosesDialog) {
++  GURL url1 = embedded_test_server()->GetURL("a.com", "/title1.html");
++  GURL url2 = embedded_test_server()->GetURL("b.com", "/title1.html");
++
++  EXPECT_TRUE(NavigateToURL(shell(), url1));
++
++  // This matches the behaviour of TabModalDialogManager in
++  // components/javascript_dialogs.
++  OnDidStartNavigation close_dialog(web_contents(),
++                                    base::BindLambdaForTesting([&]() {
++                                      CloseDialogAndCancel();
++
++                                      // Check that web_contents() were not
++                                      // deleted.
++                                      DCHECK(web_contents()->GetMainFrame());
++                                    }));
++
++  web_contents()->GetMainFrame()->RunBeforeUnloadConfirm(true,
++                                                         base::DoNothing());
++
++  EXPECT_TRUE(NavigateToURL(shell(), url2));
++}
++
++namespace {
++
+ // A helper to execute some script in a frame just before it is deleted, such
+ // that no message loops are pumped and no sync IPC messages are processed
+ // between script execution and the destruction of the RenderFrameHost  .
diff --git a/patches/chromium/cherry-pick-ecdec1fb0f42.patch b/patches/chromium/cherry-pick-ecdec1fb0f42.patch
new file mode 100644
index 0000000000000..fd8c5df0803b9
--- /dev/null
+++ b/patches/chromium/cherry-pick-ecdec1fb0f42.patch
@@ -0,0 +1,70 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Etienne Bergeron <etienneb@chromium.org>
+Date: Fri, 13 Nov 2020 17:40:59 +0000
+Subject: Fix text eliding for single-codepoint text with BiDi
+
+This CL is fixing a corner case where RenderText::Elide(...) may
+produce a text with more codepoints than the original one. This is
+an issue since the breaklists are not resized and the overflow
+will lead the render_text code to perfoarm an out-of-bound memory
+access by deferencing breaks_.end() while rendering the text. This
+is causing chrome to crash.
+
+See crbug/1142020 for details.
+
+The bug was happening when:
+  1) The text to elide was a single codepoint
+  2) The width of the glyph of the codepoint is larger than the width
+     of the ellipsis glyph
+  3) Eliding is set to ELIDING_TAIL
+  4) The display_rect width will trigger eliding
+     (smaller than codepoint width, but larger than ellipsis width)
+  5) The render text is set to RTL
+
+A possible solution is to adjust the breaklist but this required
+larger refactoring and cannot be a minimal patch to be merge on
+other channels.
+
+TBR=msw@chromium.org
+(cherry picked from commit e54920751871321474e0b953329c8aedcc8702c3)
+
+Bug: 1142020
+Change-Id: I9854651175562ec5f0d0bf7083a8da99fede0e29
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2522892
+Commit-Queue: Etienne Bergeron <etienneb@chromium.org>
+Reviewed-by: Michael Wasserman <msw@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#824878}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2537931
+Reviewed-by: Etienne Bergeron <etienneb@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1450}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/ui/gfx/render_text.cc b/ui/gfx/render_text.cc
+index 383943809398a59380518f00d84275f493f008c3..2887ea638e3843e61ca2a2935f52d08fe2bbe45e 100644
+--- a/ui/gfx/render_text.cc
++++ b/ui/gfx/render_text.cc
+@@ -2060,8 +2060,10 @@ base::string16 RenderText::Elide(const base::string16& text,
+       }
+ 
+       // Append the ellipsis and the optional directional marker characters.
++      // Do not append the BiDi marker if the only codepoint in the text is
++      // an ellipsis.
+       new_text.append(ellipsis);
+-      if (trailing_text_direction != text_direction) {
++      if (new_text.size() != 1 && trailing_text_direction != text_direction) {
+         if (trailing_text_direction == base::i18n::LEFT_TO_RIGHT)
+           new_text += base::i18n::kLeftToRightMark;
+         else
+diff --git a/ui/gfx/render_text_unittest.cc b/ui/gfx/render_text_unittest.cc
+index 2fd63b1b75fc0fdec9772a9d6b74a13423bf7221..42827f318c8b1896c021f30895072e1add742d32 100644
+--- a/ui/gfx/render_text_unittest.cc
++++ b/ui/gfx/render_text_unittest.cc
+@@ -1901,7 +1901,7 @@ const ElideTextCase kElideTailTextCases[] = {
+     {"ltr_0", L"abc", L""},
+     {"rtl_3", L"\u05d0\u05d1\u05d2", L"\u05d0\u05d1\u05d2"},
+     {"rtl_2", L"\u05d0\u05d1\u05d2", L"\u05d0\u2026"},
+-    {"rtl_1", L"\u05d0\u05d1\u05d2", L"\u2026\x200E"},
++    {"rtl_1", L"\u05d0\u05d1\u05d2", L"\u2026"},
+     {"rtl_0", L"\u05d0\u05d1\u05d2", L""},
+     {"ltr_rtl_5", L"abc\u05d0\u05d1\u05d2", L"abc\u05d0\u2026\x200F"},
+     {"ltr_rtl_4", L"abc\u05d0\u05d1\u05d2", L"abc\u2026"},
diff --git a/patches/chromium/cherry-pick-eec5025668f8.patch b/patches/chromium/cherry-pick-eec5025668f8.patch
new file mode 100644
index 0000000000000..3179c84f5fd17
--- /dev/null
+++ b/patches/chromium/cherry-pick-eec5025668f8.patch
@@ -0,0 +1,77 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Bill Budge <bbudge@chromium.org>
+Date: Fri, 13 Nov 2020 09:02:09 +0000
+Subject: Merged: [wasm][code cache] Match response to cached raw resource
+
+- Verifies that the retrieved resource has the same response time, and
+  that the source matches (i.e. both are from service worker, or both
+  are not).
+
+Bug: chromium:1146673
+
+(cherry picked from commit a8b46244ecaa1647ee2d70304878c0365ee04087)
+
+Change-Id: I6243ec9017b2405687056aa6ea199c67b1c16063
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2526802
+Reviewed-by: Yutaka Hirano <yhirano@chromium.org>
+Reviewed-by: Andreas Haas <ahaas@chromium.org>
+Commit-Queue: Bill Budge <bbudge@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#826277}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2537531
+Commit-Queue: Clemens Backes <clemensb@chromium.org>
+Commit-Queue: Andreas Haas <ahaas@chromium.org>
+Auto-Submit: Clemens Backes <clemensb@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1447}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/third_party/blink/renderer/bindings/core/v8/v8_wasm_response_extensions.cc b/third_party/blink/renderer/bindings/core/v8/v8_wasm_response_extensions.cc
+index 1010b8be1364fc500b1bb20338e8959d683df5e8..0fffec5084a09cb1af18e619cbad7cc1dd73c447 100644
+--- a/third_party/blink/renderer/bindings/core/v8/v8_wasm_response_extensions.cc
++++ b/third_party/blink/renderer/bindings/core/v8/v8_wasm_response_extensions.cc
+@@ -210,7 +210,8 @@ class ExceptionToAbortStreamingScope {
+ };
+ 
+ RawResource* GetRawResource(ScriptState* script_state,
+-                            const String& url_string) {
++                            const String& url_string,
++                            Response* response) {
+   ExecutionContext* execution_context = ExecutionContext::From(script_state);
+   if (!execution_context)
+     return nullptr;
+@@ -224,6 +225,18 @@ RawResource* GetRawResource(ScriptState* script_state,
+   if (!resource)
+     return nullptr;
+ 
++  // Make sure the resource matches the |response|. To check that, we make sure
++  // the response times match, and the response sources match.
++  const ResourceResponse& resource_response = resource->GetResponse();
++  const FetchResponseData* fetch_response_data =
++      response->GetResponse()->InternalResponse();
++  if (resource_response.ResponseTime() != fetch_response_data->ResponseTime())
++    return nullptr;
++  bool from_service_worker = fetch_response_data->ResponseSource() ==
++                             network::mojom::FetchResponseSource::kUnspecified;
++  if (resource_response.WasFetchedViaServiceWorker() != from_service_worker)
++    return nullptr;
++
+   // Wasm modules should be fetched as raw resources.
+   DCHECK_EQ(ResourceType::kRaw, resource->GetType());
+   return ToRawResource(resource);
+@@ -347,13 +360,12 @@ void StreamFromResponseCallback(
+   String url = response->url();
+   const std::string& url_utf8 = url.Utf8();
+   streaming->SetUrl(url_utf8.c_str(), url_utf8.size());
+-  RawResource* raw_resource = GetRawResource(script_state, url);
+-  if (raw_resource) {
+-    SingleCachedMetadataHandler* cache_handler =
+-        raw_resource->ScriptCacheHandler();
++  RawResource* resource = GetRawResource(script_state, url, response);
++  if (resource) {
++    SingleCachedMetadataHandler* cache_handler = resource->ScriptCacheHandler();
+     if (cache_handler) {
+       auto client = std::make_shared<WasmStreamingClient>(
+-          url, raw_resource->GetResponse().ResponseTime());
++          url, resource->GetResponse().ResponseTime());
+       streaming->SetClient(client);
+       scoped_refptr<CachedMetadata> cached_module =
+           cache_handler->GetCachedMetadata(kWasmModuleTag);
diff --git a/patches/chromium/cherry-pick-f37149c4434f.patch b/patches/chromium/cherry-pick-f37149c4434f.patch
new file mode 100644
index 0000000000000..a72ab6bd60189
--- /dev/null
+++ b/patches/chromium/cherry-pick-f37149c4434f.patch
@@ -0,0 +1,314 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jana Grill <janagrill@google.com>
+Date: Mon, 19 Apr 2021 10:55:05 +0000
+Subject: Don't show autofill dropdown for element outside the viewport
+
+Details are in the linked bug.
+
+Also cherry pick crrev/c/2682341 and a part of crrev/c/2628287 to fix
+failing tests and compile errors.
+
+(cherry picked from commit 53a4f38ee5d44bd935d176cc89e3e59fd0a3970e)
+
+Bug: 1172533,1173297
+Change-Id: Iee429cac167ccdb0cd74acf57fc5f7c3821883b1
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2675932
+Commit-Queue: Mohamed Amir Yosef <mamir@chromium.org>
+Reviewed-by: Vasilii Sukhanov <vasilii@chromium.org>
+Reviewed-by: Evan Stade <estade@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#851718}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2822155
+Commit-Queue: Jana Grill <janagrill@google.com>
+Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Owners-Override: Achuith Bhandarkar <achuith@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1611}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/chrome/browser/autofill/autofill_interactive_uitest.cc b/chrome/browser/autofill/autofill_interactive_uitest.cc
+index e28756cffe70f5f62630e54f4d74230ca21e477f..45be9ac71dc96783bfd0402f5012f94d02f9ab93 100644
+--- a/chrome/browser/autofill/autofill_interactive_uitest.cc
++++ b/chrome/browser/autofill/autofill_interactive_uitest.cc
+@@ -2771,7 +2771,14 @@ class AutofillInteractiveIsolationTest : public AutofillInteractiveTestBase {
+   }
+ };
+ 
+-IN_PROC_BROWSER_TEST_F(AutofillInteractiveIsolationTest, SimpleCrossSiteFill) {
++// Flaky on ChromeOS http://crbug.com/1175735
++#if defined(OS_CHROMEOS)
++#define MAYBE_SimpleCrossSiteFill DISABLED_SimpleCrossSiteFill
++#else
++#define MAYBE_SimpleCrossSiteFill SimpleCrossSiteFill
++#endif
++IN_PROC_BROWSER_TEST_F(AutofillInteractiveIsolationTest,
++                       MAYBE_SimpleCrossSiteFill) {
+   CreateTestProfile();
+ 
+   // Main frame is on a.com, iframe is on b.com.
+@@ -2814,7 +2821,8 @@ IN_PROC_BROWSER_TEST_F(AutofillInteractiveIsolationTest, SimpleCrossSiteFill) {
+ // This test verifies that credit card (payment card list) popup works when the
+ // form is inside an OOPIF.
+ // Flaky on Windows http://crbug.com/728488
+-#if defined(OS_WIN)
++// Flaky on ChromeOS http://crbug.com/1175735
++#if defined(OS_WIN) || defined(OS_CHROMEOS)
+ #define MAYBE_CrossSitePaymentForms DISABLED_CrossSitePaymentForms
+ #else
+ #define MAYBE_CrossSitePaymentForms CrossSitePaymentForms
+@@ -2852,8 +2860,14 @@ IN_PROC_BROWSER_TEST_F(AutofillInteractiveTest, MAYBE_CrossSitePaymentForms) {
+                        {ObservedUiEvents::kSuggestionShown});
+ }
+ 
++// Flaky on ChromeOS http://crbug.com/1175735
++#if defined(OS_CHROMEOS)
++#define MAYBE_DeletingFrameUnderSuggestion DISABLED_DeletingFrameUnderSuggestion
++#else
++#define MAYBE_DeletingFrameUnderSuggestion DeletingFrameUnderSuggestion
++#endif
+ IN_PROC_BROWSER_TEST_F(AutofillInteractiveIsolationTest,
+-                       DeletingFrameUnderSuggestion) {
++                       MAYBE_DeletingFrameUnderSuggestion) {
+   CreateTestProfile();
+ 
+   // Main frame is on a.com, iframe is on b.com.
+diff --git a/chrome/browser/autofill/autofill_uitest.cc b/chrome/browser/autofill/autofill_uitest.cc
+index b405c197f6a51bfe28aea9790fc73025238be8e2..f136fd6ac034316822d71d3ccaafb906c43a5139 100644
+--- a/chrome/browser/autofill/autofill_uitest.cc
++++ b/chrome/browser/autofill/autofill_uitest.cc
+@@ -8,6 +8,7 @@
+ #include "base/macros.h"
+ #include "base/run_loop.h"
+ #include "chrome/browser/autofill/autofill_uitest.h"
++#include "chrome/browser/autofill/autofill_uitest_util.h"
+ #include "chrome/browser/autofill/personal_data_manager_factory.h"
+ #include "chrome/browser/profiles/profile.h"
+ #include "chrome/browser/ui/browser.h"
+@@ -78,6 +79,10 @@ void AutofillUiTest::SetUpOnMainThread() {
+                          /* new_host = */ GetWebContents()->GetMainFrame());
+   Observe(GetWebContents());
+ 
++  // Wait for Personal Data Manager to be fully loaded to prevent that
++  // spurious notifications deceive the tests.
++  WaitForPersonalDataManagerToBeLoaded(browser());
++
+   disable_animation_ = std::make_unique<ui::ScopedAnimationDurationScaleMode>(
+       ui::ScopedAnimationDurationScaleMode::ZERO_DURATION);
+ 
+diff --git a/chrome/browser/autofill/autofill_uitest_util.cc b/chrome/browser/autofill/autofill_uitest_util.cc
+index 5bee77a2b6b451c4e15b0329379961164ac4f973..69d62b4f506e83e46db57d7afbff5ddf3911fd79 100644
+--- a/chrome/browser/autofill/autofill_uitest_util.cc
++++ b/chrome/browser/autofill/autofill_uitest_util.cc
+@@ -113,4 +113,12 @@ void WaitForPersonalDataChange(Browser* browser) {
+   observer.Wait();
+ }
+ 
++// Adjusted from crrev/c/2628287 to fix failure in crrev/c/2822155
++void WaitForPersonalDataManagerToBeLoaded(Browser* browser) {
++  PersonalDataManager* pdm =
++      autofill::PersonalDataManagerFactory::GetForProfile(browser->profile());
++  while (!pdm->IsDataLoaded())
++    WaitForPersonalDataChange(browser);
++}
++
+ }  // namespace autofill
+diff --git a/chrome/browser/autofill/autofill_uitest_util.h b/chrome/browser/autofill/autofill_uitest_util.h
+index df333ecf76a98def05aa55fa0c332010fb4eebd0..c95a3888563d43fa26196b7164c73db96cb80343 100644
+--- a/chrome/browser/autofill/autofill_uitest_util.h
++++ b/chrome/browser/autofill/autofill_uitest_util.h
+@@ -24,6 +24,9 @@ void AddTestAutofillData(Browser* browser,
+                          const CreditCard& card);
+ void WaitForPersonalDataChange(Browser* browser);
+ 
++// Adjusted from crrev/c/2628287 to fix failure in crrev/c/2822155
++void WaitForPersonalDataManagerToBeLoaded(Browser* browser);
++
+ }  // namespace autofill
+ 
+ #endif  // CHROME_BROWSER_AUTOFILL_AUTOFILL_UITEST_UTIL_H_
+diff --git a/chrome/browser/ui/passwords/password_generation_popup_view_browsertest.cc b/chrome/browser/ui/passwords/password_generation_popup_view_browsertest.cc
+index 7fbfcfe10bb7ed8987aaddabf3562c7a25efbaf4..31cb5347160cc069ac0fd16abd3f76017d82314a 100644
+--- a/chrome/browser/ui/passwords/password_generation_popup_view_browsertest.cc
++++ b/chrome/browser/ui/passwords/password_generation_popup_view_browsertest.cc
+@@ -26,9 +26,15 @@ class TestPasswordGenerationPopupController
+   explicit TestPasswordGenerationPopupController(
+       content::WebContents* web_contents)
+       : PasswordGenerationPopupControllerImpl(
+-            gfx::RectF(0, 0, 10, 10),
++            gfx::RectF(web_contents->GetContainerBounds().x(),
++                       web_contents->GetContainerBounds().y(),
++                       10,
++                       10),
+             autofill::password_generation::PasswordGenerationUIData(
+-                /*bounds=*/gfx::RectF(0, 0, 10, 10),
++                /*bounds=*/gfx::RectF(web_contents->GetContainerBounds().x(),
++                                      web_contents->GetContainerBounds().y(),
++                                      10,
++                                      10),
+                 /*max_length=*/10,
+                 /*generation_element=*/base::string16(),
+                 autofill::FieldRendererId(100),
+@@ -70,7 +76,9 @@ IN_PROC_BROWSER_TEST_F(PasswordGenerationPopupViewTest,
+       new autofill::TestPasswordGenerationPopupController(GetWebContents());
+   controller_->Show(PasswordGenerationPopupController::kEditGeneratedPassword);
+ 
+-  GetViewTester()->SimulateMouseMovementAt(gfx::Point(1, 1));
++  GetViewTester()->SimulateMouseMovementAt(
++      gfx::Point(GetWebContents()->GetContainerBounds().x() + 1,
++                 GetWebContents()->GetContainerBounds().y() + 1));
+ 
+   // This hides the popup and destroys the controller.
+   GetWebContents()->Close();
+diff --git a/chrome/browser/ui/views/autofill/autofill_popup_base_view.cc b/chrome/browser/ui/views/autofill/autofill_popup_base_view.cc
+index cb0c7e0b669fcae0f9c842221be47c2866a18d39..f748f66b78f6880dc72037e09b86697f30b696c2 100644
+--- a/chrome/browser/ui/views/autofill/autofill_popup_base_view.cc
++++ b/chrome/browser/ui/views/autofill/autofill_popup_base_view.cc
+@@ -259,8 +259,8 @@ bool AutofillPopupBaseView::DoUpdateBoundsAndRedrawPopup() {
+   // area so that the user notices the presence of the popup.
+   int item_height =
+       children().size() > 0 ? children()[0]->GetPreferredSize().height() : 0;
+-  if (!HasEnoughHeightForOneRow(item_height, GetContentAreaBounds(),
+-                                element_bounds)) {
++  if (!CanShowDropdownHere(item_height, GetContentAreaBounds(),
++                           element_bounds)) {
+     HideController(PopupHidingReason::kInsufficientSpace);
+     return false;
+   }
+diff --git a/chrome/browser/ui/views/autofill/autofill_popup_base_view_browsertest.cc b/chrome/browser/ui/views/autofill/autofill_popup_base_view_browsertest.cc
+index fcf2076ddff00a4a010f8d5c14c9b99070aa6911..92b79871919e971aff7043718b0187d8b9e8972c 100644
+--- a/chrome/browser/ui/views/autofill/autofill_popup_base_view_browsertest.cc
++++ b/chrome/browser/ui/views/autofill/autofill_popup_base_view_browsertest.cc
+@@ -53,10 +53,13 @@ class AutofillPopupBaseViewTest : public InProcessBrowserTest {
+   ~AutofillPopupBaseViewTest() override {}
+ 
+   void SetUpOnMainThread() override {
+-    gfx::NativeView native_view =
+-        browser()->tab_strip_model()->GetActiveWebContents()->GetNativeView();
++    content::WebContents* web_contents =
++        browser()->tab_strip_model()->GetActiveWebContents();
++    gfx::NativeView native_view = web_contents->GetNativeView();
+     EXPECT_CALL(mock_delegate_, container_view())
+         .WillRepeatedly(Return(native_view));
++    EXPECT_CALL(mock_delegate_, GetWebContents())
++        .WillRepeatedly(Return(web_contents));
+     EXPECT_CALL(mock_delegate_, ViewDestroyed());
+ 
+     view_ = new AutofillPopupBaseView(
+diff --git a/chrome/browser/ui/views/autofill/autofill_popup_view_native_views.cc b/chrome/browser/ui/views/autofill/autofill_popup_view_native_views.cc
+index 6622a15d0c10c4a3cc1d4fc69aee682372e42aa6..be6dd2e36d2ba0c9173c158f31c7dae9856adc2c 100644
+--- a/chrome/browser/ui/views/autofill/autofill_popup_view_native_views.cc
++++ b/chrome/browser/ui/views/autofill/autofill_popup_view_native_views.cc
+@@ -1229,8 +1229,9 @@ bool AutofillPopupViewNativeViews::DoUpdateBoundsAndRedrawPopup() {
+       body_container_ && body_container_->children().size() > 0
+           ? body_container_->children()[0]->GetPreferredSize().height()
+           : 0;
+-  if (!HasEnoughHeightForOneRow(item_height, GetContentAreaBounds(),
+-                                element_bounds)) {
++
++  if (!CanShowDropdownHere(item_height, GetContentAreaBounds(),
++                           element_bounds)) {
+     controller_->Hide(PopupHidingReason::kInsufficientSpace);
+     return false;
+   }
+diff --git a/chrome/browser/ui/views/autofill/autofill_popup_view_utils.cc b/chrome/browser/ui/views/autofill/autofill_popup_view_utils.cc
+index e95fe363ba65c7bf6223820f5f3ec110d395cbeb..82f528c39a6edeb329bc8c19321831caca41e553 100644
+--- a/chrome/browser/ui/views/autofill/autofill_popup_view_utils.cc
++++ b/chrome/browser/ui/views/autofill/autofill_popup_view_utils.cc
+@@ -87,16 +87,26 @@ gfx::Rect CalculatePopupBounds(const gfx::Size& desired_size,
+   return popup_bounds;
+ }
+ 
+-bool HasEnoughHeightForOneRow(int item_height,
+-                              const gfx::Rect& content_area_bounds,
+-                              const gfx::Rect& element_bounds) {
+-  // Ensure that at least one row of the popup can be displayed within the
++bool CanShowDropdownHere(int item_height,
++                         const gfx::Rect& content_area_bounds,
++                         const gfx::Rect& element_bounds) {
++  // Ensure that at least one row of the popup will be displayed within the
+   // bounds of the content area so that the user notices the presence of the
+   // popup.
+   bool enough_space_for_one_item_in_content_area_above_element =
+       element_bounds.y() - content_area_bounds.y() >= item_height;
++  bool element_top_is_within_content_area_bounds =
++      element_bounds.y() > content_area_bounds.y() &&
++      element_bounds.y() < content_area_bounds.bottom();
++
+   bool enough_space_for_one_item_in_content_area_below_element =
+       content_area_bounds.bottom() - element_bounds.bottom() >= item_height;
+-  return enough_space_for_one_item_in_content_area_above_element ||
+-         enough_space_for_one_item_in_content_area_below_element;
++  bool element_bottom_is_within_content_area_bounds =
++      element_bounds.bottom() > content_area_bounds.y() &&
++      element_bounds.bottom() < content_area_bounds.bottom();
++
++  return (enough_space_for_one_item_in_content_area_above_element &&
++          element_top_is_within_content_area_bounds) ||
++         (enough_space_for_one_item_in_content_area_below_element &&
++          element_bottom_is_within_content_area_bounds);
+ }
+diff --git a/chrome/browser/ui/views/autofill/autofill_popup_view_utils.h b/chrome/browser/ui/views/autofill/autofill_popup_view_utils.h
+index 990d67cababe9363fe5ee1b91bee81986846f807..bab1a26c38f7fcbea7da51e92e0d8e3dfe97622b 100644
+--- a/chrome/browser/ui/views/autofill/autofill_popup_view_utils.h
++++ b/chrome/browser/ui/views/autofill/autofill_popup_view_utils.h
+@@ -34,9 +34,10 @@ gfx::Rect CalculatePopupBounds(const gfx::Size& desired_size,
+                                bool is_rtl);
+ 
+ // Returns whether there is enough height within |content_area_bounds| above or
+-// below |element_bounds| to display |item_height|.
+-bool HasEnoughHeightForOneRow(int item_height,
+-                              const gfx::Rect& content_area_bounds,
+-                              const gfx::Rect& element_bounds);
++// below |element_bounds| to display |item_height|, and that the first dropdown
++// item will actually be visible within the bounds of the content area.
++bool CanShowDropdownHere(int item_height,
++                         const gfx::Rect& content_area_bounds,
++                         const gfx::Rect& element_bounds);
+ 
+ #endif  // CHROME_BROWSER_UI_VIEWS_AUTOFILL_AUTOFILL_POPUP_VIEW_UTILS_H_
+diff --git a/chrome/browser/ui/views/autofill/autofill_popup_view_utils_unittest.cc b/chrome/browser/ui/views/autofill/autofill_popup_view_utils_unittest.cc
+index 78fa8a09a4791bde5825935e8f2b7e805c100b1f..cecd8d2c3173ea7b48ebebf5ae33fd2c531e6551 100644
+--- a/chrome/browser/ui/views/autofill/autofill_popup_view_utils_unittest.cc
++++ b/chrome/browser/ui/views/autofill/autofill_popup_view_utils_unittest.cc
+@@ -1,3 +1,4 @@
++
+ // Copyright 2020 The Chromium Authors. All rights reserved.
+ // Use of this source code is governed by a BSD-style license that can be
+ // found in the LICENSE file.
+@@ -115,7 +116,34 @@ TEST(AutofillPopupViewUtilsTest, NotEnoughHeightForAnItem) {
+   gfx::Rect content_area_bounds(x, window_y + 2, width, height - 2);
+   gfx::Rect element_bounds(x, window_y + 3, width, height - 3);
+ 
+-  bool enough_height_for_item = HasEnoughHeightForOneRow(
+-      item_height, content_area_bounds, element_bounds);
+-  EXPECT_FALSE(enough_height_for_item);
++  EXPECT_FALSE(
++      CanShowDropdownHere(item_height, content_area_bounds, element_bounds));
++}
++
++TEST(AutofillPopupViewUtilsTest, ElementOutOfContentAreaBounds) {
++  // In this test, each row of the popup has a height of 8 pixels, and there is
++  // no enough height in the content area to show one row.
++  //
++  //  |---------------------|    ---> y = 5
++  //  |       Window        |
++  //  | |-----------------| |    ---> y = 7
++  //  | |                 | |
++  //  | |   Content Area  | |
++  //  | |                 | |
++  //  |-|-----------------|-|    ---> y = 50
++  //      |-------------|        ---> y = 53
++  //      |   Element   |
++  //      |-------------|        ---> y = 63
++
++  constexpr int item_height = 8;
++  constexpr int window_y = 5;
++  constexpr int x = 10;
++  constexpr int width = 5;
++  constexpr int height = 46;
++
++  gfx::Rect content_area_bounds(x, window_y + 2, width, height - 2);
++  gfx::Rect element_bounds(x, window_y + height + 3, width, 10);
++
++  EXPECT_FALSE(
++      CanShowDropdownHere(item_height, content_area_bounds, element_bounds));
+ }
diff --git a/patches/chromium/cherry-pick-f440137cd96a.patch b/patches/chromium/cherry-pick-f440137cd96a.patch
new file mode 100644
index 0000000000000..547eb6eb0a61b
--- /dev/null
+++ b/patches/chromium/cherry-pick-f440137cd96a.patch
@@ -0,0 +1,155 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Stephen Chenney <schenney@chromium.org>
+Date: Wed, 14 Oct 2020 02:52:47 +0000
+Subject: Implement WebGL image-orientation
+
+M-86 merge.
+
+When creating textures for WebGL, always orient images
+with EXIF orientation data.
+
+This change also corrects the transposed size reported by
+ImageBitmap. And it removes superfluous arguments from
+CopyImageData.
+
+(cherry picked from commit f373458c504c2d115c42f31b29ff5c19674acbbc)
+
+Bug: 1100470, 1125337
+Change-Id: I79aa798327a3582939aa574723926b3325c80e7c
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2459400
+Reviewed-by: Kenneth Russell <kbr@chromium.org>
+Commit-Queue: Stephen Chenney <schenney@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#815359}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2469776
+Reviewed-by: Stephen Chenney <schenney@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1237}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/third_party/blink/renderer/core/imagebitmap/image_bitmap.cc b/third_party/blink/renderer/core/imagebitmap/image_bitmap.cc
+index b1cdb23186256ca2b4082d2acf556d98c910f145..3e2b5373fdba7bcd0abe866644e17fcb3cee167e 100644
+--- a/third_party/blink/renderer/core/imagebitmap/image_bitmap.cc
++++ b/third_party/blink/renderer/core/imagebitmap/image_bitmap.cc
+@@ -189,14 +189,16 @@ SkImageInfo GetSkImageInfo(const scoped_refptr<Image>& input) {
+ 
+ // This function results in a readback due to using SkImage::readPixels().
+ // Returns transparent black pixels if the input SkImageInfo.bounds() does
+-// not intersect with the input image boundaries.
++// not intersect with the input image boundaries. When apply_orientation
++// is true this method will orient the data according to the source's EXIF
++// information.
+ Vector<uint8_t> CopyImageData(const scoped_refptr<StaticBitmapImage>& input,
+                               const SkImageInfo& info,
+-                              const unsigned x = 0,
+-                              const unsigned y = 0) {
++                              bool apply_orientation = true) {
+   if (info.isEmpty())
+     return {};
+-  sk_sp<SkImage> sk_image = input->PaintImageForCurrentFrame().GetSkImage();
++  PaintImage paint_image = input->PaintImageForCurrentFrame();
++  sk_sp<SkImage> sk_image = paint_image.GetSkImage();
+   if (sk_image->bounds().isEmpty())
+     return {};
+ 
+@@ -205,16 +207,30 @@ Vector<uint8_t> CopyImageData(const scoped_refptr<StaticBitmapImage>& input,
+   Vector<uint8_t> dst_buffer(byte_length);
+ 
+   bool read_pixels_successful =
+-      sk_image->readPixels(info, dst_buffer.data(), info.minRowBytes(), x, y);
++      sk_image->readPixels(info, dst_buffer.data(), info.minRowBytes(), 0, 0);
+   DCHECK(read_pixels_successful);
+   if (!read_pixels_successful)
+     return {};
++
++  // Orient the data, and re-read the pixels.
++  if (apply_orientation && !input->HasDefaultOrientation()) {
++    paint_image = Image::ResizeAndOrientImage(
++        paint_image, input->CurrentFrameOrientation(), FloatSize(1, 1), 1,
++        kInterpolationNone);
++    sk_image = paint_image.GetSkImage();
++    read_pixels_successful = sk_image->readPixels(info, dst_buffer.data(),
++                                                  info.minRowBytes(), 0, 0);
++    DCHECK(read_pixels_successful);
++    if (!read_pixels_successful)
++      return {};
++  }
++
+   return dst_buffer;
+ }
+ 
+ Vector<uint8_t> CopyImageData(const scoped_refptr<StaticBitmapImage>& input) {
+   SkImageInfo info = GetSkImageInfo(input);
+-  return CopyImageData(std::move(input), info);
++  return CopyImageData(std::move(input), info, false);
+ }
+ 
+ static inline bool ShouldAvoidPremul(
+@@ -1053,12 +1069,13 @@ Vector<uint8_t> ImageBitmap::CopyBitmapData(AlphaDisposition alpha_op,
+   auto color_type = info.colorType();
+   if (color_type == kN32_SkColorType && u8_color_type == kRGBAColorType)
+     color_type = kRGBA_8888_SkColorType;
++  // Note that width() and height() here apply EXIF orientation
+   info =
+       SkImageInfo::Make(width(), height(), color_type,
+                         (alpha_op == kPremultiplyAlpha) ? kPremul_SkAlphaType
+                                                         : kUnpremul_SkAlphaType,
+                         info.refColorSpace());
+-  return CopyImageData(image_, info);
++  return CopyImageData(image_, info, true);
+ }
+ 
+ Vector<uint8_t> ImageBitmap::CopyBitmapData() {
+@@ -1090,7 +1107,7 @@ IntSize ImageBitmap::Size() const {
+     return IntSize();
+   DCHECK_GT(image_->width(), 0);
+   DCHECK_GT(image_->height(), 0);
+-  return IntSize(image_->width(), image_->height());
++  return image_->SizeRespectingOrientation();
+ }
+ 
+ ScriptPromise ImageBitmap::CreateImageBitmap(ScriptState* script_state,
+diff --git a/third_party/blink/renderer/modules/webgl/webgl_rendering_context_base.cc b/third_party/blink/renderer/modules/webgl/webgl_rendering_context_base.cc
+index 457b7c3d2bef75bb378f8dfc5b61b932b6941fb6..d7445bf31a391bea3742327c34dc3eb46c72513b 100644
+--- a/third_party/blink/renderer/modules/webgl/webgl_rendering_context_base.cc
++++ b/third_party/blink/renderer/modules/webgl/webgl_rendering_context_base.cc
+@@ -5307,10 +5307,12 @@ void WebGLRenderingContextBase::TexImageHelperHTMLImageElement(
+     return;
+ 
+   scoped_refptr<Image> image_for_render = image->CachedImage()->GetImage();
+-  if (IsA<SVGImage>(image_for_render.get())) {
+-    if (canvas()) {
++  bool have_svg_image = IsA<SVGImage>(image_for_render.get());
++  if (have_svg_image || !image_for_render->HasDefaultOrientation()) {
++    if (have_svg_image && canvas()) {
+       UseCounter::Count(canvas()->GetDocument(), WebFeature::kSVGInWebGL);
+     }
++    // DrawImageIntoBuffer always respects orientation
+     image_for_render =
+         DrawImageIntoBuffer(std::move(image_for_render), image->width(),
+                             image->height(), func_name);
+@@ -5846,6 +5848,7 @@ void WebGLRenderingContextBase::TexImageHelperImageBitmap(
+                        level, internalformat, width, height, depth, 0, format,
+                        type, xoffset, yoffset, zoffset))
+     return;
++
+   scoped_refptr<StaticBitmapImage> image = bitmap->BitmapImage();
+   DCHECK(image);
+ 
+@@ -5872,9 +5875,16 @@ void WebGLRenderingContextBase::TexImageHelperImageBitmap(
+     return;
+   }
+ 
++  // Apply orientation if necessary
++  PaintImage paint_image = bitmap->BitmapImage()->PaintImageForCurrentFrame();
++  if (!image->HasDefaultOrientation()) {
++    paint_image = Image::ResizeAndOrientImage(
++        paint_image, image->CurrentFrameOrientation(), FloatSize(1, 1), 1,
++        kInterpolationNone);
++  }
++
+   // TODO(kbr): refactor this away to use TexImageImpl on image.
+-  sk_sp<SkImage> sk_image =
+-      bitmap->BitmapImage()->PaintImageForCurrentFrame().GetSkImage();
++  sk_sp<SkImage> sk_image = paint_image.GetSkImage();
+   if (!sk_image) {
+     SynthesizeGLError(GL_OUT_OF_MEMORY, func_name,
+                       "ImageBitmap unexpectedly empty");
diff --git a/patches/chromium/cherry-pick-fe20b05a0e5e.patch b/patches/chromium/cherry-pick-fe20b05a0e5e.patch
new file mode 100644
index 0000000000000..ece508e56af62
--- /dev/null
+++ b/patches/chromium/cherry-pick-fe20b05a0e5e.patch
@@ -0,0 +1,140 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jana Grill <janagrill@google.com>
+Date: Tue, 20 Apr 2021 18:23:33 +0000
+Subject: M86-LTS: DevTools: expect PageHandler may be destroyed during
+ Page.navigate
+
+(cherry picked from commit ff5e70191ec701cce4f84aaa25cd676376253a8a)
+
+Bug: 1188889
+Change-Id: I5c2fcca84834d66c46d77a70683212c2330177a5
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2787756
+Commit-Queue: Andrey Kosyakov <caseq@chromium.org>
+Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
+Reviewed-by: Karan Bhatia <karandeepb@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#867507}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2821536
+Commit-Queue: Achuith Bhandarkar <achuith@chromium.org>
+Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Owners-Override: Achuith Bhandarkar <achuith@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1618}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/chrome/browser/extensions/api/debugger/debugger_apitest.cc b/chrome/browser/extensions/api/debugger/debugger_apitest.cc
+index 71ce5a3399db29451e990d530736460aa28eeec0..b35accc8ce46f3465624898fe18d463529498d07 100644
+--- a/chrome/browser/extensions/api/debugger/debugger_apitest.cc
++++ b/chrome/browser/extensions/api/debugger/debugger_apitest.cc
+@@ -24,6 +24,7 @@
+ #include "components/sessions/content/session_tab_helper.h"
+ #include "content/public/test/browser_test.h"
+ #include "content/public/test/browser_test_utils.h"
++#include "content/public/test/no_renderer_crashes_assertion.h"
+ #include "extensions/browser/extension_function.h"
+ #include "extensions/common/extension.h"
+ #include "extensions/common/extension_builder.h"
+@@ -353,6 +354,19 @@ IN_PROC_BROWSER_TEST_F(DebuggerExtensionApiTest,
+       << message_;
+ }
+ 
++// Tests that navigation to a forbidden URL is properly denied and
++// does not cause a crash.
++// This is a regression test for https://crbug.com/1188889.
++IN_PROC_BROWSER_TEST_F(DebuggerExtensionApiTest, DISABLED_NavigateToForbiddenUrl) {
++  content::ScopedAllowRendererCrashes scoped_allow_renderer_crashes;
++  // We don't send a DevTools command callback before disconnecting the session,
++  // so the extension does not receive a callback either.
++  base::AutoReset<bool> ignore_did_respond(
++      &ExtensionFunction::ignore_all_did_respond_for_testing_do_not_use, true);
++  ASSERT_TRUE(RunExtensionTest("debugger_navigate_to_forbidden_url"))
++      << message_;
++}
++
+ class SitePerProcessDebuggerExtensionApiTest : public DebuggerExtensionApiTest {
+  public:
+   void SetUpCommandLine(base::CommandLine* command_line) override {
+diff --git a/chrome/test/data/extensions/api_test/debugger_navigate_to_forbidden_url/background.js b/chrome/test/data/extensions/api_test/debugger_navigate_to_forbidden_url/background.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..e2ef32fffd3e5d49e7dc10d53f8c891ddb0f3872
+--- /dev/null
++++ b/chrome/test/data/extensions/api_test/debugger_navigate_to_forbidden_url/background.js
+@@ -0,0 +1,28 @@
++// Copyright 2021 The Chromium Authors. All rights reserved.
++// Use of this source code is governed by a BSD-style license that can be
++// found in the LICENSE file.
++
++const protocolVersion = '1.3';
++const DETACHED_WHILE_HANDLING = 'Detached while handling command.';
++
++chrome.test.runTests([
++  async function testNavigateToForbiddenUrl() {
++    const {openTab} = await import('/_test_resources/test_util/tabs_util.js');
++    const tab = await openTab('about:blank');
++    const debuggee = {tabId: tab.id};
++    await new Promise(resolve =>
++        chrome.debugger.attach(debuggee, protocolVersion, resolve));
++    chrome.debugger.sendCommand(debuggee, 'Page.crash');
++    await new Promise(resolve =>
++        chrome.debugger.onEvent.addListener((source, method, params) => {
++          if (method === 'Inspector.targetCrashed')
++            resolve();
++        }));
++    const result = await new Promise(resolve =>
++      chrome.debugger.sendCommand(debuggee, 'Page.navigate', {
++          url: 'chrome://version'
++      }, resolve));
++    chrome.test.assertLastError(DETACHED_WHILE_HANDLING);
++    chrome.test.succeed();
++  }
++]);
+diff --git a/chrome/test/data/extensions/api_test/debugger_navigate_to_forbidden_url/manifest.json b/chrome/test/data/extensions/api_test/debugger_navigate_to_forbidden_url/manifest.json
+new file mode 100644
+index 0000000000000000000000000000000000000000..05db294ed7f49893431b0039a5f338d20e08f27d
+--- /dev/null
++++ b/chrome/test/data/extensions/api_test/debugger_navigate_to_forbidden_url/manifest.json
+@@ -0,0 +1,11 @@
++{
++  "name": "Debugger API test for CDP-initiated navigation to forbidden URLs",
++  "version": "1.0",
++  "manifest_version": 2,
++  "background": {
++    "scripts": ["background.js"]
++  },
++  "permissions": [
++    "debugger"
++  ]
++}
+diff --git a/content/browser/devtools/protocol/page_handler.cc b/content/browser/devtools/protocol/page_handler.cc
+index 630de0dd016fd3d054bcd40b22d75a242eeaa23e..a340d3e4519ada9edba279090ea11b57521ef0f4 100644
+--- a/content/browser/devtools/protocol/page_handler.cc
++++ b/content/browser/devtools/protocol/page_handler.cc
+@@ -496,7 +496,12 @@ void PageHandler::Navigate(const std::string& url,
+   params.referrer = Referrer(GURL(referrer.fromMaybe("")), policy);
+   params.transition_type = type;
+   params.frame_tree_node_id = frame_tree_node->frame_tree_node_id();
++  // Handler may be destroyed while navigating if the session
++  // gets disconnected as a result of access checks.
++  base::WeakPtr<PageHandler> weak_self = weak_factory_.GetWeakPtr();
+   frame_tree_node->navigator().GetController()->LoadURLWithParams(params);
++  if (!weak_self)
++    return;
+ 
+   base::UnguessableToken frame_token = frame_tree_node->devtools_frame_token();
+   auto navigate_callback = navigate_callbacks_.find(frame_token);
+diff --git a/content/browser/devtools/render_frame_devtools_agent_host.cc b/content/browser/devtools/render_frame_devtools_agent_host.cc
+index 52fdd0f1066699cc019c33de2517c23f12b4a616..8795c547717b206f4e459f655f6e62a7ba9229e0 100644
+--- a/content/browser/devtools/render_frame_devtools_agent_host.cc
++++ b/content/browser/devtools/render_frame_devtools_agent_host.cc
+@@ -472,8 +472,11 @@ void RenderFrameDevToolsAgentHost::UpdateFrameHost(
+     if (!ShouldAllowSession(session))
+       restricted_sessions.push_back(session);
+   }
+-  if (!restricted_sessions.empty())
++  scoped_refptr<RenderFrameDevToolsAgentHost> protect;
++  if (!restricted_sessions.empty()) {
++    protect = this;
+     ForceDetachRestrictedSessions(restricted_sessions);
++  }
+ 
+   UpdateFrameAlive();
+ }
diff --git a/patches/chromium/cherry-pick-fe85e04a1797.patch b/patches/chromium/cherry-pick-fe85e04a1797.patch
new file mode 100644
index 0000000000000..2fae048bacdd8
--- /dev/null
+++ b/patches/chromium/cherry-pick-fe85e04a1797.patch
@@ -0,0 +1,291 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Ken Rockot <rockot@google.com>
+Date: Wed, 31 Mar 2021 18:44:06 +0000
+Subject: Don't use BigBuffer for IPC::Message transport
+
+M86 merge conflicts and resolution:
+* ipc/ipc_message_pipe_reader.cc
+  Fixed extra include.
+
+(cherry picked from commit 85bd7c88523545ab0e497d5e7b3e929793813358)
+
+(cherry picked from commit fad3b9ffe7c7ff82909d911c573bd185aa3b3b50)
+
+Fixed: 1184399
+Change-Id: Iddd91ae8d7ae63022b61c96239f5e39261dfb735
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2737012
+Commit-Queue: Ken Rockot <rockot@google.com>
+Reviewed-by: Daniel Cheng <dcheng@chromium.org>
+Cr-Original-Original-Commit-Position: refs/heads/master@{#860010}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2779918
+Auto-Submit: Ken Rockot <rockot@google.com>
+Reviewed-by: Adrian Taylor <adetaylor@chromium.org>
+Reviewed-by: Alex Gough <ajgo@chromium.org>
+Commit-Queue: Alex Gough <ajgo@chromium.org>
+Cr-Original-Commit-Position: refs/branch-heads/4389@{#1597}
+Cr-Original-Branched-From: 9251c5db2b6d5a59fe4eac7aafa5fed37c139bb7-refs/heads/master@{#843830}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2794488
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Reviewed-by: Artem Sumaneev <asumaneev@google.com>
+Reviewed-by: Ken Rockot <rockot@google.com>
+Auto-Submit: Artem Sumaneev <asumaneev@google.com>
+Commit-Queue: Artem Sumaneev <asumaneev@google.com>
+Cr-Commit-Position: refs/branch-heads/4240@{#1587}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/ipc/BUILD.gn b/ipc/BUILD.gn
+index 994d45e84502670f544742a3011a8f9381a711bc..281e84df83ae73e8c4716fda1624cb4065342c76 100644
+--- a/ipc/BUILD.gn
++++ b/ipc/BUILD.gn
+@@ -187,10 +187,7 @@ mojom_component("mojom") {
+   output_prefix = "ipc_mojom"
+   macro_prefix = "IPC_MOJOM"
+   sources = [ "ipc.mojom" ]
+-  public_deps = [
+-    "//mojo/public/interfaces/bindings",
+-    "//mojo/public/mojom/base",
+-  ]
++  public_deps = [ "//mojo/public/interfaces/bindings" ]
+ 
+   cpp_typemaps = [
+     {
+@@ -207,10 +204,7 @@ mojom_component("mojom") {
+         "//ipc/message_view.cc",
+         "//ipc/message_view.h",
+       ]
+-      traits_public_deps = [
+-        "//ipc:message_support",
+-        "//mojo/public/cpp/base:shared_typemap_traits",
+-      ]
++      traits_public_deps = [ "//ipc:message_support" ]
+     },
+   ]
+ 
+diff --git a/ipc/ipc.mojom b/ipc/ipc.mojom
+index c66799642fbee2cef3449ff5d52cd5f187808cfe..4606022b28bca1df06ba6eb8eaac025573475b10 100644
+--- a/ipc/ipc.mojom
++++ b/ipc/ipc.mojom
+@@ -4,7 +4,6 @@
+ 
+ module IPC.mojom;
+ 
+-import "mojo/public/mojom/base/big_buffer.mojom";
+ import "mojo/public/interfaces/bindings/native_struct.mojom";
+ 
+ // A placeholder interface type since we don't yet support generic associated
+@@ -14,7 +13,7 @@ interface GenericInterface {};
+ // Typemapped such that arbitrarily large IPC::Message objects can be sent and
+ // received with minimal copying.
+ struct Message {
+-  mojo_base.mojom.BigBuffer buffer;
++  array<uint8> bytes;
+   array<mojo.native.SerializedHandle>? handles;
+ };
+ 
+@@ -24,6 +23,7 @@ interface Channel {
+   SetPeerPid(int32 pid);
+ 
+   // Transmits a classical Chrome IPC message.
++  [UnlimitedSize]
+   Receive(Message message);
+ 
+   // Requests a Channel-associated interface.
+diff --git a/ipc/ipc_message_pipe_reader.cc b/ipc/ipc_message_pipe_reader.cc
+index bdc5dd680d0f9107719765334d0a1ea3e864e200..cbf0363a9d941db1ab34ae835e707b7825447659 100644
+--- a/ipc/ipc_message_pipe_reader.cc
++++ b/ipc/ipc_message_pipe_reader.cc
+@@ -10,6 +10,7 @@
+ 
+ #include "base/bind.h"
+ #include "base/bind_helpers.h"
++#include "base/containers/span.h"
+ #include "base/location.h"
+ #include "base/logging.h"
+ #include "base/macros.h"
+@@ -62,7 +63,9 @@ bool MessagePipeReader::Send(std::unique_ptr<Message> message) {
+   if (!sender_)
+     return false;
+ 
+-  sender_->Receive(MessageView(*message, std::move(handles)));
++  base::span<const uint8_t> bytes(static_cast<const uint8_t*>(message->data()),
++                                  message->size());
++  sender_->Receive(MessageView(bytes, std::move(handles)));
+   DVLOG(4) << "Send " << message->type() << ": " << message->size();
+   return true;
+ }
+@@ -82,11 +85,12 @@ void MessagePipeReader::SetPeerPid(int32_t peer_pid) {
+ }
+ 
+ void MessagePipeReader::Receive(MessageView message_view) {
+-  if (!message_view.size()) {
++  if (message_view.bytes().empty()) {
+     delegate_->OnBrokenDataReceived();
+     return;
+   }
+-  Message message(message_view.data(), message_view.size());
++  Message message(reinterpret_cast<const char*>(message_view.bytes().data()),
++                  message_view.bytes().size());
+   if (!message.IsValid()) {
+     delegate_->OnBrokenDataReceived();
+     return;
+diff --git a/ipc/ipc_mojo_bootstrap_unittest.cc b/ipc/ipc_mojo_bootstrap_unittest.cc
+index 47a7ad79a30165c76041075be10b9be8c13f5e75..b32941da752a54ba7317e439150982adbb9fbcad 100644
+--- a/ipc/ipc_mojo_bootstrap_unittest.cc
++++ b/ipc/ipc_mojo_bootstrap_unittest.cc
+@@ -77,7 +77,9 @@ class PeerPidReceiver : public IPC::mojom::Channel {
+     ASSERT_NE(MessageExpectation::kNotExpected, message_expectation_);
+     received_message_ = true;
+ 
+-    IPC::Message message(message_view.data(), message_view.size());
++    IPC::Message message(
++        reinterpret_cast<const char*>(message_view.bytes().data()),
++        message_view.bytes().size());
+     bool expected_valid =
+         message_expectation_ == MessageExpectation::kExpectedValid;
+     EXPECT_EQ(expected_valid, message.IsValid());
+@@ -196,8 +198,7 @@ MULTIPROCESS_TEST_MAIN_WITH_SETUP(
+ 
+   uint8_t data = 0;
+   sender->Receive(
+-      IPC::MessageView(mojo_base::BigBufferView(base::make_span(&data, 0)),
+-                       base::nullopt /* handles */));
++      IPC::MessageView(base::make_span(&data, 0), base::nullopt /* handles */));
+ 
+   base::RunLoop run_loop;
+   PeerPidReceiver impl(std::move(receiver), run_loop.QuitClosure());
+diff --git a/ipc/message_mojom_traits.cc b/ipc/message_mojom_traits.cc
+index 4aab9248e9ff6ca8e2d7d085ae3e996ac04666e8..d8ad4a2f919b01362e3e2746bfb7f4fae77b059d 100644
+--- a/ipc/message_mojom_traits.cc
++++ b/ipc/message_mojom_traits.cc
+@@ -4,15 +4,13 @@
+ 
+ #include "ipc/message_mojom_traits.h"
+ 
+-#include "mojo/public/cpp/base/big_buffer_mojom_traits.h"
+-
+ namespace mojo {
+ 
+ // static
+-mojo_base::BigBufferView
+-StructTraits<IPC::mojom::MessageDataView, IPC::MessageView>::buffer(
++base::span<const uint8_t>
++StructTraits<IPC::mojom::MessageDataView, IPC::MessageView>::bytes(
+     IPC::MessageView& view) {
+-  return view.TakeBufferView();
++  return view.bytes();
+ }
+ 
+ // static
+@@ -26,14 +24,14 @@ StructTraits<IPC::mojom::MessageDataView, IPC::MessageView>::handles(
+ bool StructTraits<IPC::mojom::MessageDataView, IPC::MessageView>::Read(
+     IPC::mojom::MessageDataView data,
+     IPC::MessageView* out) {
+-  mojo_base::BigBufferView buffer_view;
+-  if (!data.ReadBuffer(&buffer_view))
+-    return false;
++  mojo::ArrayDataView<uint8_t> bytes;
++  data.GetBytesDataView(&bytes);
++
+   base::Optional<std::vector<mojo::native::SerializedHandlePtr>> handles;
+   if (!data.ReadHandles(&handles))
+     return false;
+ 
+-  *out = IPC::MessageView(std::move(buffer_view), std::move(handles));
++  *out = IPC::MessageView(bytes, std::move(handles));
+   return true;
+ }
+ 
+diff --git a/ipc/message_mojom_traits.h b/ipc/message_mojom_traits.h
+index 617ffbe37309946464e3f180a0ebde97f56dbd75..6b5064a12191e9a663519e7b5cb7c5f907a75054 100644
+--- a/ipc/message_mojom_traits.h
++++ b/ipc/message_mojom_traits.h
+@@ -7,10 +7,10 @@
+ 
+ #include <vector>
+ 
++#include "base/containers/span.h"
+ #include "base/optional.h"
+ #include "ipc/ipc.mojom-shared.h"
+ #include "ipc/message_view.h"
+-#include "mojo/public/cpp/base/big_buffer.h"
+ #include "mojo/public/cpp/bindings/struct_traits.h"
+ #include "mojo/public/interfaces/bindings/native_struct.mojom.h"
+ 
+@@ -19,7 +19,7 @@ namespace mojo {
+ template <>
+ class StructTraits<IPC::mojom::MessageDataView, IPC::MessageView> {
+  public:
+-  static mojo_base::BigBufferView buffer(IPC::MessageView& view);
++  static base::span<const uint8_t> bytes(IPC::MessageView& view);
+   static base::Optional<std::vector<mojo::native::SerializedHandlePtr>> handles(
+       IPC::MessageView& view);
+ 
+diff --git a/ipc/message_view.cc b/ipc/message_view.cc
+index 49a80878e7a92cda13105ea0f2fea36ad7ed05e6..39c6608dd507c3ca051b619d966ae521e95fe8e2 100644
+--- a/ipc/message_view.cc
++++ b/ipc/message_view.cc
+@@ -11,16 +11,9 @@ namespace IPC {
+ MessageView::MessageView() = default;
+ 
+ MessageView::MessageView(
+-    const Message& message,
++    base::span<const uint8_t> bytes,
+     base::Optional<std::vector<mojo::native::SerializedHandlePtr>> handles)
+-    : buffer_view_(base::make_span(static_cast<const uint8_t*>(message.data()),
+-                                   message.size())),
+-      handles_(std::move(handles)) {}
+-
+-MessageView::MessageView(
+-    mojo_base::BigBufferView buffer_view,
+-    base::Optional<std::vector<mojo::native::SerializedHandlePtr>> handles)
+-    : buffer_view_(std::move(buffer_view)), handles_(std::move(handles)) {}
++    : bytes_(bytes), handles_(std::move(handles)) {}
+ 
+ MessageView::MessageView(MessageView&&) = default;
+ 
+diff --git a/ipc/message_view.h b/ipc/message_view.h
+index 4ec059bf3639b9c75178f2300d0796b433e1d2ed..c7801bb963f06b03c51ba87bffc307792b592dae 100644
+--- a/ipc/message_view.h
++++ b/ipc/message_view.h
+@@ -11,7 +11,6 @@
+ #include "base/containers/span.h"
+ #include "base/macros.h"
+ #include "ipc/ipc_message.h"
+-#include "mojo/public/cpp/base/big_buffer.h"
+ #include "mojo/public/interfaces/bindings/native_struct.mojom-forward.h"
+ 
+ namespace IPC {
+@@ -20,30 +19,18 @@ class COMPONENT_EXPORT(IPC_MOJOM) MessageView {
+  public:
+   MessageView();
+   MessageView(
+-      const Message& message,
+-      base::Optional<std::vector<mojo::native::SerializedHandlePtr>> handles);
+-  MessageView(
+-      mojo_base::BigBufferView buffer_view,
++      base::span<const uint8_t> bytes,
+       base::Optional<std::vector<mojo::native::SerializedHandlePtr>> handles);
+   MessageView(MessageView&&);
+   ~MessageView();
+ 
+   MessageView& operator=(MessageView&&);
+ 
+-  const char* data() const {
+-    return reinterpret_cast<const char*>(buffer_view_.data().data());
+-  }
+-
+-  uint32_t size() const {
+-    return static_cast<uint32_t>(buffer_view_.data().size());
+-  }
+-
+-  mojo_base::BigBufferView TakeBufferView() { return std::move(buffer_view_); }
+-
++  base::span<const uint8_t> bytes() const { return bytes_; }
+   base::Optional<std::vector<mojo::native::SerializedHandlePtr>> TakeHandles();
+ 
+  private:
+-  mojo_base::BigBufferView buffer_view_;
++  base::span<const uint8_t> bytes_;
+   base::Optional<std::vector<mojo::native::SerializedHandlePtr>> handles_;
+ 
+   DISALLOW_COPY_AND_ASSIGN(MessageView);
diff --git a/patches/chromium/chore_expose_v8_initialization_isolate_callbacks.patch b/patches/chromium/chore_expose_v8_initialization_isolate_callbacks.patch
new file mode 100644
index 0000000000000..401d3003e62e1
--- /dev/null
+++ b/patches/chromium/chore_expose_v8_initialization_isolate_callbacks.patch
@@ -0,0 +1,37 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Shelley Vohr <shelley.vohr@gmail.com>
+Date: Mon, 5 Oct 2020 13:43:59 -0700
+Subject: chore: expose v8 initialization isolate callbacks
+
+This commit is necessary in order to ensure consistent behavior from
+v8 Isolate callbacks in contexts which Node.js does not control. If
+we're running with contextIsolation enabled, we should be falling back
+to Blink's logic. This will be upstreamed in some form.
+
+diff --git a/third_party/blink/renderer/bindings/core/v8/v8_initializer.cc b/third_party/blink/renderer/bindings/core/v8/v8_initializer.cc
+index 21504ce01403d20067c8439c0c61ee0d71de84a5..13855078e4e9531304d30ec46cd2bb79798623ad 100644
+--- a/third_party/blink/renderer/bindings/core/v8/v8_initializer.cc
++++ b/third_party/blink/renderer/bindings/core/v8/v8_initializer.cc
+@@ -452,7 +452,7 @@ CodeGenerationCheckCallbackInMainThread(v8::Local<v8::Context> context,
+   return {true, std::move(stringified_source)};
+ }
+ 
+-static bool WasmCodeGenerationCheckCallbackInMainThread(
++bool V8Initializer::WasmCodeGenerationCheckCallbackInMainThread(
+     v8::Local<v8::Context> context,
+     v8::Local<v8::String> source) {
+   if (ExecutionContext* execution_context = ToExecutionContext(context)) {
+diff --git a/third_party/blink/renderer/bindings/core/v8/v8_initializer.h b/third_party/blink/renderer/bindings/core/v8/v8_initializer.h
+index e7cbc5db7d15aa0fcfb37ba261673b973827296a..6b93aa449a005e06862a99ea0c9b751ffff2d6ec 100644
+--- a/third_party/blink/renderer/bindings/core/v8/v8_initializer.h
++++ b/third_party/blink/renderer/bindings/core/v8/v8_initializer.h
+@@ -67,6 +67,9 @@ class CORE_EXPORT V8Initializer {
+                                          v8::Local<v8::Value>);
+   static void MessageHandlerInWorker(v8::Local<v8::Message>,
+                                      v8::Local<v8::Value>);
++  static bool WasmCodeGenerationCheckCallbackInMainThread(
++    v8::Local<v8::Context> context,
++    v8::Local<v8::String> source);
+ };
+ 
+ }  // namespace blink
diff --git a/patches/chromium/crashpad-initialize-logging.patch b/patches/chromium/crashpad-initialize-logging.patch
new file mode 100644
index 0000000000000..32156ea3e570e
--- /dev/null
+++ b/patches/chromium/crashpad-initialize-logging.patch
@@ -0,0 +1,146 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Joshua Peraza <jperaza@chromium.org>
+Date: Wed, 21 Oct 2020 11:10:25 -0700
+Subject: Initialize logging for crashpad
+
+Although logging to files is not yet supported by mini_chromium, it is
+the default behavior for OS_WIN in chromium. This change should
+cause crashpad to log via OutputDebugString() on Windows, instead of
+debug.log files. Future work (crbug.com/crashpad/26) should arrange for
+logs to be uploaded with reports, embedded in associated minidumps or as
+file attachments.
+
+Bug: chromium:711159
+Change-Id: I0f9004f7de94dd29d555cc7d23c48a63da6b4bba
+Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/2425108
+Reviewed-by: Mark Mentovai <mark@chromium.org>
+
+diff --git a/base/logging.cc b/base/logging.cc
+index 2da71c73819b34a45911131e2cc8bff861178789..6b701b7a8dee0d015758e11771c5c1f3a6b8d13b 100644
+--- a/base/logging.cc
++++ b/base/logging.cc
+@@ -421,21 +421,23 @@ bool BaseInitLoggingImpl(const LoggingSettings& settings) {
+            0u);
+ #endif
+ 
+-  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
+-  // Don't bother initializing |g_vlog_info| unless we use one of the
+-  // vlog switches.
+-  if (command_line->HasSwitch(switches::kV) ||
+-      command_line->HasSwitch(switches::kVModule)) {
+-    // NOTE: If |g_vlog_info| has already been initialized, it might be in use
+-    // by another thread. Don't delete the old VLogInfo, just create a second
+-    // one. We keep track of both to avoid memory leak warnings.
+-    CHECK(!g_vlog_info_prev);
+-    g_vlog_info_prev = g_vlog_info;
+-
+-    g_vlog_info =
+-        new VlogInfo(command_line->GetSwitchValueASCII(switches::kV),
+-                     command_line->GetSwitchValueASCII(switches::kVModule),
+-                     &g_min_log_level);
++  if (base::CommandLine::InitializedForCurrentProcess()) {
++    base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
++    // Don't bother initializing |g_vlog_info| unless we use one of the
++    // vlog switches.
++    if (command_line->HasSwitch(switches::kV) ||
++        command_line->HasSwitch(switches::kVModule)) {
++      // NOTE: If |g_vlog_info| has already been initialized, it might be in use
++      // by another thread. Don't delete the old VLogInfo, just create a second
++      // one. We keep track of both to avoid memory leak warnings.
++      CHECK(!g_vlog_info_prev);
++      g_vlog_info_prev = g_vlog_info;
++
++      g_vlog_info =
++          new VlogInfo(command_line->GetSwitchValueASCII(switches::kV),
++                       command_line->GetSwitchValueASCII(switches::kVModule),
++                       &g_min_log_level);
++    }
+   }
+ 
+   g_logging_destination = settings.logging_dest;
+@@ -446,7 +448,10 @@ bool BaseInitLoggingImpl(const LoggingSettings& settings) {
+     config.min_severity = FX_LOG_INFO;
+     config.console_fd = -1;
+     config.log_service_channel = ZX_HANDLE_INVALID;
+-    std::string log_tag = command_line->GetProgram().BaseName().AsUTF8Unsafe();
++    std::string log_tag = base::CommandLine::ForCurrentProcess()
++                              ->GetProgram()
++                              .BaseName()
++                              .AsUTF8Unsafe();
+     const char* log_tag_data = log_tag.data();
+     config.tags = &log_tag_data;
+     config.num_tags = 1;
+diff --git a/third_party/crashpad/crashpad/DEPS b/third_party/crashpad/crashpad/DEPS
+index ccb447cde9a9ee3c1fe29419abfa8aa63d777455..6ee9db5400cf12ae4812a261e78234581b036c25 100644
+--- a/third_party/crashpad/crashpad/DEPS
++++ b/third_party/crashpad/crashpad/DEPS
+@@ -42,7 +42,7 @@ deps = {
+       '7bde79cc274d06451bf65ae82c012a5d3e476b5a',
+   'crashpad/third_party/mini_chromium/mini_chromium':
+       Var('chromium_git') + '/chromium/mini_chromium@' +
+-      'ae14a14ab4cea36db9c446741581d427a7fc7f89',
++      '5fc64bfbf1c000161445c586de45e40464ff2314',
+   'crashpad/third_party/libfuzzer/src':
+       Var('chromium_git') + '/chromium/llvm-project/compiler-rt/lib/fuzzer.git@' +
+       'fda403cf93ecb8792cb1d061564d89a6553ca020',
+diff --git a/third_party/crashpad/crashpad/handler/handler_main.cc b/third_party/crashpad/crashpad/handler/handler_main.cc
+index d56857ff9042a0e4ed55bb101e419948f4028305..579a7c364077d2b6a78803fa75f7180109b37c89 100644
+--- a/third_party/crashpad/crashpad/handler/handler_main.cc
++++ b/third_party/crashpad/crashpad/handler/handler_main.cc
+@@ -494,16 +494,26 @@ class ScopedStoppable {
+   DISALLOW_COPY_AND_ASSIGN(ScopedStoppable);
+ };
+ 
++void InitCrashpadLogging() {
++  logging::LoggingSettings settings;
++#if defined(OS_CHROMEOS)
++  settings.logging_dest = logging::LOG_TO_FILE;
++  settings.log_file_path = "/var/log/chrome/chrome";
++#elif defined(OS_WIN)
++  settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
++#else
++  settings.logging_dest =
++      logging::LOG_TO_SYSTEM_DEBUG_LOG | logging::LOG_TO_STDERR;
++#endif
++  logging::InitLogging(settings);
++}
++
+ }  // namespace
+ 
+ int HandlerMain(int argc,
+                 char* argv[],
+                 const UserStreamDataSources* user_stream_sources) {
+-#if defined(OS_CHROMEOS)
+-  if (freopen("/var/log/chrome/chrome", "a", stderr) == nullptr) {
+-    PLOG(ERROR) << "Failed to redirect stderr to /var/log/chrome/chrome";
+-  }
+-#endif
++  InitCrashpadLogging();
+ 
+   InstallCrashHandler();
+   CallMetricsRecordNormalExit metrics_record_normal_exit;
+diff --git a/third_party/crashpad/crashpad/test/gtest_main.cc b/third_party/crashpad/crashpad/test/gtest_main.cc
+index 67cfa0d72d7eb469775201f3a9df906f27c302a9..c67b8e24bb940935d5da88428ed3058a135f5a57 100644
+--- a/third_party/crashpad/crashpad/test/gtest_main.cc
++++ b/third_party/crashpad/crashpad/test/gtest_main.cc
+@@ -12,6 +12,7 @@
+ // See the License for the specific language governing permissions and
+ // limitations under the License.
+ 
++#include "base/logging.h"
+ #include "build/build_config.h"
+ #include "gtest/gtest.h"
+ #include "test/main_arguments.h"
+@@ -99,6 +100,12 @@ int main(int argc, char* argv[]) {
+ 
+ #endif  // CRASHPAD_IS_IN_CHROMIUM
+ 
++  // base::TestSuite initializes logging when using Chromium's test launcher.
++  logging::LoggingSettings settings;
++  settings.logging_dest =
++      logging::LOG_TO_STDERR | logging::LOG_TO_SYSTEM_DEBUG_LOG;
++  logging::InitLogging(settings);
++
+ #if defined(CRASHPAD_TEST_LAUNCHER_GOOGLEMOCK)
+   testing::InitGoogleMock(&argc, argv);
+ #elif defined(CRASHPAD_TEST_LAUNCHER_GOOGLETEST)
diff --git a/patches/chromium/css_make_fetches_from_inline_css_use_the_document_s_url_as_referrer.patch b/patches/chromium/css_make_fetches_from_inline_css_use_the_document_s_url_as_referrer.patch
new file mode 100644
index 0000000000000..0883a3c9c5561
--- /dev/null
+++ b/patches/chromium/css_make_fetches_from_inline_css_use_the_document_s_url_as_referrer.patch
@@ -0,0 +1,447 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: David Van Cleve <davidvc@chromium.org>
+Date: Thu, 4 Mar 2021 16:50:46 +0000
+Subject: css: Make fetches from inline CSS use the document's URL as referrer
+
+Right now, fetches from inline CSS use the inline CSS's base URL
+instead of the URL from the context that embeds the inline CSS: for
+instance, loading a source-site.com page with the following code
+  <base href="https://other-site.com">
+  <style type=text/css> @import('best-sheet.com') </style>
+should lead to the best-sheet.com sheet getting fetched with a
+source-site.com referrer, but it will currently provide an
+other-site.com referrer. However, if the imported sheet from
+best-sheet.com makes more nested fetches, those nested requests should
+use best-sheet.com as the basis for their referrers (as they do
+currently).
+
+This CL updates CSSParserContext's referrer setting logic to roughly do
+the following:
+- inline CSS: use the embedding document's URL as the referrer, or, for
+srcdoc iframes, walk up the frame tree until hitting a non-srcdoc frame
+- requests from fetched stylesheets: just as currently, use the fetched
+sheet's URL as the basis for constructing the referrer
+
+This seemed like it required refactoring CSSParserContext slightly
+because there are constructors that take both a Document and a base URL,
+and it's not obvious from the constructor signature whether the
+Document or the base URL should be the one that provides the referrer.
+To resolve this ambiguity, the refactor updates these CSSParserContext
+constructors to take caller-provided Referrer objects.
+
+(cherry picked from commit 0b1539fcb923056624d4adc84b88140d367d92da)
+
+Change-Id: If5a99d8057dff5e771e821d0e1f605566e28ff1d
+Fixed: 1158645, 1158010
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2592447
+Reviewed-by: Rune Lillesveen <futhark@chromium.org>
+Reviewed-by: Matt Falkenhagen <falken@chromium.org>
+Commit-Queue: David Van Cleve <davidvc@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#841509}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2731576
+Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
+Commit-Queue: Victor-Gabriel Savu <vsavu@google.com>
+Cr-Commit-Position: refs/branch-heads/4240@{#1558}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/third_party/blink/renderer/core/css/css_style_sheet.cc b/third_party/blink/renderer/core/css/css_style_sheet.cc
+index c168b0a244865e3c390989e3e5af275fdef2a4cd..10efc5bd894c16de745b7f4bb07268719f443e73 100644
+--- a/third_party/blink/renderer/core/css/css_style_sheet.cc
++++ b/third_party/blink/renderer/core/css/css_style_sheet.cc
+@@ -37,6 +37,7 @@
+ #include "third_party/blink/renderer/core/dom/document.h"
+ #include "third_party/blink/renderer/core/dom/node.h"
+ #include "third_party/blink/renderer/core/frame/deprecation.h"
++#include "third_party/blink/renderer/core/frame/local_dom_window.h"
+ #include "third_party/blink/renderer/core/html/html_link_element.h"
+ #include "third_party/blink/renderer/core/html/html_style_element.h"
+ #include "third_party/blink/renderer/core/html_names.h"
+@@ -138,9 +139,15 @@ CSSStyleSheet* CSSStyleSheet::CreateInline(Node& owner_node,
+                                            const KURL& base_url,
+                                            const TextPosition& start_position,
+                                            const WTF::TextEncoding& encoding) {
++  Document& owner_node_document = owner_node.GetDocument();
+   auto* parser_context = MakeGarbageCollected<CSSParserContext>(
+-      owner_node.GetDocument(), owner_node.GetDocument().BaseURL(),
+-      true /* origin_clean */, owner_node.GetDocument().GetReferrerPolicy(),
++      owner_node_document, owner_node_document.BaseURL(),
++      true /* origin_clean */,
++      Referrer(
++          owner_node_document.GetExecutionContext()
++              ? owner_node_document.GetExecutionContext()->OutgoingReferrer()
++              : String(),  // GetExecutionContext() only returns null in tests.
++          owner_node.GetDocument().GetReferrerPolicy()),
+       encoding);
+   if (AdTracker::IsAdScriptExecutingInDocument(&owner_node.GetDocument()))
+     parser_context->SetIsAdRelated();
+diff --git a/third_party/blink/renderer/core/css/parser/css_parser_context.cc b/third_party/blink/renderer/core/css/parser/css_parser_context.cc
+index 5c1292cf13b4265c3db36fd3c1a71a30b3c81c68..b636bd5388a871fd284a74b7926aeb5922e274e5 100644
+--- a/third_party/blink/renderer/core/css/parser/css_parser_context.cc
++++ b/third_party/blink/renderer/core/css/parser/css_parser_context.cc
+@@ -53,27 +53,25 @@ CSSParserContext::CSSParserContext(const CSSParserContext* other,
+   is_ad_related_ = other->is_ad_related_;
+ }
+ 
+-CSSParserContext::CSSParserContext(
+-    const CSSParserContext* other,
+-    const KURL& base_url,
+-    bool origin_clean,
+-    network::mojom::ReferrerPolicy referrer_policy,
+-    const WTF::TextEncoding& charset,
+-    const Document* use_counter_document)
+-    : CSSParserContext(
+-          base_url,
+-          origin_clean,
+-          charset,
+-          other->mode_,
+-          other->match_mode_,
+-          other->profile_,
+-          Referrer(base_url.StrippedForUseAsReferrer(), referrer_policy),
+-          other->is_html_document_,
+-          other->use_legacy_background_size_shorthand_behavior_,
+-          other->secure_context_mode_,
+-          other->should_check_content_security_policy_,
+-          use_counter_document,
+-          other->resource_fetch_restriction_) {
++CSSParserContext::CSSParserContext(const CSSParserContext* other,
++                                   const KURL& base_url,
++                                   bool origin_clean,
++                                   const Referrer& referrer,
++                                   const WTF::TextEncoding& charset,
++                                   const Document* use_counter_document)
++    : CSSParserContext(base_url,
++                       origin_clean,
++                       charset,
++                       other->mode_,
++                       other->match_mode_,
++                       other->profile_,
++                       referrer,
++                       other->is_html_document_,
++                       other->use_legacy_background_size_shorthand_behavior_,
++                       other->secure_context_mode_,
++                       other->should_check_content_security_policy_,
++                       use_counter_document,
++                       other->resource_fetch_restriction_) {
+   is_ad_related_ = other->is_ad_related_;
+ }
+ 
+@@ -96,18 +94,23 @@ CSSParserContext::CSSParserContext(CSSParserMode mode,
+                        ResourceFetchRestriction::kNone) {}
+ 
+ CSSParserContext::CSSParserContext(const Document& document)
+-    : CSSParserContext(document,
+-                       document.BaseURL(),
+-                       true /* origin_clean */,
+-                       document.GetReferrerPolicy(),
+-                       WTF::TextEncoding(),
+-                       kLiveProfile) {}
++    : CSSParserContext(
++          document,
++          document.BaseURL(),
++          true /* origin_clean */,
++          Referrer(document.GetExecutionContext()
++                       ? document.GetExecutionContext()->OutgoingReferrer()
++                       : String(),  // GetExecutionContext() only returns null
++                                    // in tests.
++                   document.GetReferrerPolicy()),
++          WTF::TextEncoding(),
++          kLiveProfile) {}
+ 
+ CSSParserContext::CSSParserContext(
+     const Document& document,
+     const KURL& base_url_override,
+     bool origin_clean,
+-    network::mojom::ReferrerPolicy referrer_policy_override,
++    const Referrer& referrer,
+     const WTF::TextEncoding& charset,
+     SelectorProfile profile,
+     enum ResourceFetchRestriction resource_fetch_restriction)
+@@ -122,8 +125,7 @@ CSSParserContext::CSSParserContext(
+                      : kHTMLStandardMode)
+               : document.InQuirksMode() ? kHTMLQuirksMode : kHTMLStandardMode,
+           profile,
+-          Referrer(base_url_override.StrippedForUseAsReferrer(),
+-                   referrer_policy_override),
++          referrer,
+           IsA<HTMLDocument>(document),
+           document.GetSettings()
+               ? document.GetSettings()
+diff --git a/third_party/blink/renderer/core/css/parser/css_parser_context.h b/third_party/blink/renderer/core/css/parser/css_parser_context.h
+index 33b458f21910bcbfdb6956b02cd2ef56bb39778b..8d7ec9e6b7a14fffaaf72dcd0d2c0d0f062dbbfa 100644
+--- a/third_party/blink/renderer/core/css/parser/css_parser_context.h
++++ b/third_party/blink/renderer/core/css/parser/css_parser_context.h
+@@ -40,10 +40,15 @@ class CORE_EXPORT CSSParserContext final
+   explicit CSSParserContext(const CSSParserContext* other,
+                             const Document* use_counter_document = nullptr);
+ 
++  // Creates a context with most of its constructor attributes provided by
++  // copying from |other|, except that the remaining constructor arguments take
++  // precedence over the corresponding characteristics of |other|. This is
++  // useful for initializing @imported sheets' contexts, which inherit most of
++  // their characteristics from their parents.
+   CSSParserContext(const CSSParserContext* other,
+                    const KURL& base_url_override,
+                    bool origin_clean,
+-                   network::mojom::ReferrerPolicy referrer_policy_override,
++                   const Referrer& referrer,
+                    const WTF::TextEncoding& charset_override,
+                    const Document* use_counter_document);
+   CSSParserContext(CSSParserMode,
+@@ -54,7 +59,7 @@ class CORE_EXPORT CSSParserContext final
+   CSSParserContext(const Document&,
+                    const KURL& base_url_override,
+                    bool origin_clean,
+-                   network::mojom::ReferrerPolicy referrer_policy_override,
++                   const Referrer& referrer,
+                    const WTF::TextEncoding& charset = WTF::TextEncoding(),
+                    SelectorProfile = kLiveProfile,
+                    ResourceFetchRestriction resource_fetch_restriction =
+@@ -69,7 +74,7 @@ class CORE_EXPORT CSSParserContext final
+                    CSSParserMode,
+                    CSSParserMode match_mode,
+                    SelectorProfile,
+-                   const Referrer&,
++                   const Referrer& referrer,
+                    bool is_html_document,
+                    bool use_legacy_background_size_shorthand_behavior,
+                    SecureContextMode,
+diff --git a/third_party/blink/renderer/core/css/selector_query.cc b/third_party/blink/renderer/core/css/selector_query.cc
+index 722b751f19207b070664d79c5a9cc758f1c044f4..35d9d926f2e1ac0c2d032817b87c1079af9408ec 100644
+--- a/third_party/blink/renderer/core/css/selector_query.cc
++++ b/third_party/blink/renderer/core/css/selector_query.cc
+@@ -535,9 +535,8 @@ SelectorQuery* SelectorQueryCache::Add(const AtomicString& selectors,
+ 
+   CSSSelectorList selector_list = CSSParser::ParseSelector(
+       MakeGarbageCollected<CSSParserContext>(
+-          document, document.BaseURL(), true /* origin_clean */,
+-          document.GetReferrerPolicy(), WTF::TextEncoding(),
+-          CSSParserContext::kSnapshotProfile),
++          document, document.BaseURL(), true /* origin_clean */, Referrer(),
++          WTF::TextEncoding(), CSSParserContext::kSnapshotProfile),
+       nullptr, selectors);
+ 
+   if (!selector_list.First()) {
+diff --git a/third_party/blink/renderer/core/css/selector_query_test.cc b/third_party/blink/renderer/core/css/selector_query_test.cc
+index 8d701d91372e5c2fb4b1a30f190f629f95e1b0b2..bf14850baf8dd2e92f74b89b78963a367440a704 100644
+--- a/third_party/blink/renderer/core/css/selector_query_test.cc
++++ b/third_party/blink/renderer/core/css/selector_query_test.cc
+@@ -72,9 +72,8 @@ TEST(SelectorQueryTest, NotMatchingPseudoElement) {
+ 
+   CSSSelectorList selector_list = CSSParser::ParseSelector(
+       MakeGarbageCollected<CSSParserContext>(
+-          *document, NullURL(), true /* origin_clean */,
+-          network::mojom::ReferrerPolicy::kDefault, WTF::TextEncoding(),
+-          CSSParserContext::kSnapshotProfile),
++          *document, NullURL(), true /* origin_clean */, Referrer(),
++          WTF::TextEncoding(), CSSParserContext::kSnapshotProfile),
+       nullptr, "span::before");
+   std::unique_ptr<SelectorQuery> query =
+       SelectorQuery::Adopt(std::move(selector_list));
+@@ -83,9 +82,8 @@ TEST(SelectorQueryTest, NotMatchingPseudoElement) {
+ 
+   selector_list = CSSParser::ParseSelector(
+       MakeGarbageCollected<CSSParserContext>(
+-          *document, NullURL(), true /* origin_clean */,
+-          network::mojom::ReferrerPolicy::kDefault, WTF::TextEncoding(),
+-          CSSParserContext::kSnapshotProfile),
++          *document, NullURL(), true /* origin_clean */, Referrer(),
++          WTF::TextEncoding(), CSSParserContext::kSnapshotProfile),
+       nullptr, "span");
+   query = SelectorQuery::Adopt(std::move(selector_list));
+   elm = query->QueryFirst(*document);
+@@ -103,9 +101,8 @@ TEST(SelectorQueryTest, LastOfTypeNotFinishedParsing) {
+ 
+   CSSSelectorList selector_list = CSSParser::ParseSelector(
+       MakeGarbageCollected<CSSParserContext>(
+-          *document, NullURL(), true /* origin_clean */,
+-          network::mojom::ReferrerPolicy::kDefault, WTF::TextEncoding(),
+-          CSSParserContext::kSnapshotProfile),
++          *document, NullURL(), true /* origin_clean */, Referrer(),
++          WTF::TextEncoding(), CSSParserContext::kSnapshotProfile),
+       nullptr, "p:last-of-type");
+   std::unique_ptr<SelectorQuery> query =
+       SelectorQuery::Adopt(std::move(selector_list));
+diff --git a/third_party/blink/renderer/core/css/style_rule_import.cc b/third_party/blink/renderer/core/css/style_rule_import.cc
+index 447d130a9c29a698c81c0436b318058172b3a7ef..857fb15c74063613d467c29829eda0a8ea18b9bb 100644
+--- a/third_party/blink/renderer/core/css/style_rule_import.cc
++++ b/third_party/blink/renderer/core/css/style_rule_import.cc
+@@ -83,8 +83,9 @@ void StyleRuleImport::NotifyFinished(Resource* resource) {
+   CSSParserContext* context = MakeGarbageCollected<CSSParserContext>(
+       parent_context, cached_style_sheet->GetResponse().ResponseUrl(),
+       cached_style_sheet->GetResponse().IsCorsSameOrigin(),
+-      cached_style_sheet->GetReferrerPolicy(), cached_style_sheet->Encoding(),
+-      document);
++      Referrer(cached_style_sheet->GetResponse().ResponseUrl(),
++               cached_style_sheet->GetReferrerPolicy()),
++      cached_style_sheet->Encoding(), document);
+   if (cached_style_sheet->GetResourceRequest().IsAdResource())
+     context->SetIsAdRelated();
+ 
+diff --git a/third_party/blink/renderer/core/dom/processing_instruction.cc b/third_party/blink/renderer/core/dom/processing_instruction.cc
+index 739226d95f964ebf4ae35983c6e1cd5faa01b324..1a1ead65c7642350f7d13364046f665c021bc3b0 100644
+--- a/third_party/blink/renderer/core/dom/processing_instruction.cc
++++ b/third_party/blink/renderer/core/dom/processing_instruction.cc
+@@ -206,7 +206,9 @@ void ProcessingInstruction::NotifyFinished(Resource* resource) {
+     auto* parser_context = MakeGarbageCollected<CSSParserContext>(
+         GetDocument(), style_resource->GetResponse().ResponseUrl(),
+         style_resource->GetResponse().IsCorsSameOrigin(),
+-        style_resource->GetReferrerPolicy(), style_resource->Encoding());
++        Referrer(style_resource->GetResponse().ResponseUrl(),
++                 style_resource->GetReferrerPolicy()),
++        style_resource->Encoding());
+     if (style_resource->GetResourceRequest().IsAdResource())
+       parser_context->SetIsAdRelated();
+ 
+diff --git a/third_party/blink/renderer/core/html/link_style.cc b/third_party/blink/renderer/core/html/link_style.cc
+index 5036ac1f0cb9613772c704a6dc5c5e2496ab5567..5e3b7e361ae1ebe2ff89f10448eac4fe33352031 100644
+--- a/third_party/blink/renderer/core/html/link_style.cc
++++ b/third_party/blink/renderer/core/html/link_style.cc
+@@ -88,7 +88,9 @@ void LinkStyle::NotifyFinished(Resource* resource) {
+   auto* parser_context = MakeGarbageCollected<CSSParserContext>(
+       GetDocument(), cached_style_sheet->GetResponse().ResponseUrl(),
+       cached_style_sheet->GetResponse().IsCorsSameOrigin(),
+-      cached_style_sheet->GetReferrerPolicy(), cached_style_sheet->Encoding());
++      Referrer(cached_style_sheet->GetResponse().ResponseUrl(),
++               cached_style_sheet->GetReferrerPolicy()),
++      cached_style_sheet->Encoding());
+   if (cached_style_sheet->GetResourceRequest().IsAdResource()) {
+     parser_context->SetIsAdRelated();
+   }
+diff --git a/third_party/blink/renderer/core/html/track/vtt/vtt_parser.cc b/third_party/blink/renderer/core/html/track/vtt/vtt_parser.cc
+index 0b6e9b6b8b66029f46ca79f24a2519f13e611005..e492003c470af4c7b96551f6dfee79d26f8b7c77 100644
+--- a/third_party/blink/renderer/core/html/track/vtt/vtt_parser.cc
++++ b/third_party/blink/renderer/core/html/track/vtt/vtt_parser.cc
+@@ -244,9 +244,8 @@ VTTParser::ParseState VTTParser::CollectRegionSettings(const String& line) {
+ VTTParser::ParseState VTTParser::CollectStyleSheet(const String& line) {
+   if (line.IsEmpty() || line.Contains("-->")) {
+     auto* parser_context = MakeGarbageCollected<CSSParserContext>(
+-        *document_, NullURL(), true /* origin_clean */,
+-        document_->GetReferrerPolicy(), UTF8Encoding(),
+-        CSSParserContext::kLiveProfile,
++        *document_, NullURL(), true /* origin_clean */, Referrer(),
++        UTF8Encoding(), CSSParserContext::kLiveProfile,
+         ResourceFetchRestriction::kOnlyDataUrls);
+     auto* style_sheet_contents =
+         MakeGarbageCollected<StyleSheetContents>(parser_context);
+diff --git a/third_party/blink/web_tests/TestExpectations b/third_party/blink/web_tests/TestExpectations
+index acf5033054cecc1099068e2452cfbef8f1ffbd95..0e9ac683c48befe5f3e740e0632bf93e7569c686 100644
+--- a/third_party/blink/web_tests/TestExpectations
++++ b/third_party/blink/web_tests/TestExpectations
+@@ -3245,6 +3245,7 @@ virtual/webrtc-wpt-plan-b/external/wpt/webrtc/RTCPeerConnection-restartIce-onneg
+ # See also crbug.com/920100 (sheriff 2019-01-09).
+ crbug.com/626703 external/wpt/referrer-policy/css-integration/svg/external-stylesheet.html [ Timeout Failure ]
+ crbug.com/626703 external/wpt/referrer-policy/css-integration/svg/inline-style.html [ Timeout Failure ]
++crbug.com/626703 external/wpt/referrer-policy/css-integration/svg/inline-style-with-differentorigin-base-tag.tentative.html [ Timeout Failure ]
+ crbug.com/626703 external/wpt/referrer-policy/css-integration/svg/internal-stylesheet.html [ Timeout Failure ]
+ crbug.com/626703 external/wpt/referrer-policy/css-integration/svg/presentation-attribute.html [ Timeout Failure ]
+ crbug.com/626703 external/wpt/referrer-policy/css-integration/svg/processing-instruction.html [ Timeout Failure ]
+diff --git a/third_party/blink/web_tests/external/wpt/referrer-policy/css-integration/image/inline-style-with-differentorigin-base-tag.tentative.html b/third_party/blink/web_tests/external/wpt/referrer-policy/css-integration/image/inline-style-with-differentorigin-base-tag.tentative.html
+new file mode 100644
+index 0000000000000000000000000000000000000000..091afd832ab35a76136b4242df1c1ec73aee109d
+--- /dev/null
++++ b/third_party/blink/web_tests/external/wpt/referrer-policy/css-integration/image/inline-style-with-differentorigin-base-tag.tentative.html
+@@ -0,0 +1,45 @@
++<!DOCTYPE html>
++<title>CSS integration - image from inline style from document with base tag</title>
++<link rel="help" href="https://crbug.com/1158645" />
++
++<head>
++  <meta name="referrer" content="origin">
++</head>
++
++<script src="/resources/testharness.js"></script>
++<script src="/resources/testharnessreport.js"></script>
++<script src="/common/utils.js"></script>
++<!-- Common global functions for referrer-policy tests. -->
++<script src="/common/security-features/resources/common.sub.js"></script>
++
++<!-- This has to follow the <script> tags, or it will make the js files fail to load. -->
++<base href="http://other-site.example" />
++
++<p>Check that resources from inline styles are loaded with
++  the referrer and referrer policy from the document and, in
++  particular, not with the different base URL set in the base tag.</p>
++
++<div class="styled"></div>
++
++<script>
++  'use strict';
++  promise_test(function(css_test) {
++    var id = token();
++    var css_url = location.protocol + "//www1." + location.hostname + ":" + location.port + "/common/security-features/subresource/image.py" + "?id=" + id;
++    var img_url = css_url + "&report-headers";
++
++    var div = document.querySelector("div.styled");
++    div.style = "content:url(" + css_url + ")";
++    return timeoutPromise(css_test, 1000)
++      .then(() => requestViaXhr(img_url))
++      .then(function(message) {
++        assert_own_property(message, "headers");
++        assert_own_property(message, "referrer");
++        assert_equals(message.referrer, location.origin + "/");
++      });
++  }, "Image from inline styles.");
++</script>
++
++<div id="log"></div>
++
++</html>
+diff --git a/third_party/blink/web_tests/external/wpt/referrer-policy/css-integration/svg/inline-style-with-differentorigin-base-tag.tentative.html b/third_party/blink/web_tests/external/wpt/referrer-policy/css-integration/svg/inline-style-with-differentorigin-base-tag.tentative.html
+new file mode 100644
+index 0000000000000000000000000000000000000000..9a8bc6da418bc7302138daba8cf06cb449bd2dfe
+--- /dev/null
++++ b/third_party/blink/web_tests/external/wpt/referrer-policy/css-integration/svg/inline-style-with-differentorigin-base-tag.tentative.html
+@@ -0,0 +1,40 @@
++<!DOCTYPE html>
++<html>
++
++<head>
++  <title>CSS integration - styling SVG from inline style on page with different-origin base tag</title>
++  <script src="/resources/testharness.js"></script>
++  <script src="/resources/testharnessreport.js"></script>
++  <script src="/common/utils.js"></script>
++  <!-- Common global functions for referrer-policy tests. -->
++  <script src="/common/security-features/resources/common.sub.js"></script>
++  <!-- Helper functions for referrer-policy css tests. -->
++  <script src="/referrer-policy/css-integration/css-test-helper.js"></script>
++  <meta name="referrer" content="origin">
++</head>
++
++<base href="http://other-page.example/" />
++
++<body>
++  <p>Check that resources from inline styles are loaded with
++    the referrer and referrer policy from the document and, in
++    particular, not from the document's overridden base URL.</p>
++  <script>
++    function setInlineStyle(test) {
++      test.expected = location.origin + "/";
++      let svg = createSvg();
++      document.body.appendChild(svg);
++      let element = svg.getElementsByTagName('path')[0];
++      element.style = test.property + ": url(" + url_prefix + "svg.py?id=" +
++        test.id + "#invalidFragment);";
++    }
++
++    runSvgTests(svg_test_properties,
++      "Styling SVG from inline styles",
++      setInlineStyle);
++  </script>
++
++  <div id="log"></div>
++</body>
++
++</html>
+diff --git a/third_party/blink/web_tests/http/tests/css/resources/referrer-check.php b/third_party/blink/web_tests/http/tests/css/resources/referrer-check.php
+index 69483e01544c842f56a51d00d1b2ee5dc24b4162..7a517de692f418c3c8b365d0f7aefb9e585c9da0 100644
+--- a/third_party/blink/web_tests/http/tests/css/resources/referrer-check.php
++++ b/third_party/blink/web_tests/http/tests/css/resources/referrer-check.php
+@@ -31,7 +31,7 @@ $expectedReferrerPaths = array(
+     "document" => "/css/css-resources-referrer.html",
+     "sheet" => "/css/resources/css-resources-referrer.css",
+     "importedSheet" => "/css/resources/css-resources-referrer-import.css",
+-    "iframe" => "/from/iframe.html"
++    "iframe" => "/css/css-resources-referrer-srcdoc.html"
+ );
+ 
+ $from = $_GET["from"];
diff --git a/patches/chromium/disable_color_correct_rendering.patch b/patches/chromium/disable_color_correct_rendering.patch
index ef5ea0e1fe7ce..dacdd0b5fc81f 100644
--- a/patches/chromium/disable_color_correct_rendering.patch
+++ b/patches/chromium/disable_color_correct_rendering.patch
@@ -20,7 +20,7 @@ to deal with color spaces. That is being tracked at
 https://crbug.com/634542 and https://crbug.com/711107.
 
 diff --git a/cc/trees/layer_tree_host_impl.cc b/cc/trees/layer_tree_host_impl.cc
-index 2c8bb4fe9c8cf592cc83fce164f21209e5dd1465..a6fde7b42fd854a56226acb4766274621aa7b3e6 100644
+index 0fbcdf35620861da00da59808d8350d80a8b48f0..d16c76fe5e315047532d2d724f2665efb2b53ea6 100644
 --- a/cc/trees/layer_tree_host_impl.cc
 +++ b/cc/trees/layer_tree_host_impl.cc
 @@ -1861,6 +1861,10 @@ void LayerTreeHostImpl::SetIsLikelyToRequireADraw(
@@ -231,10 +231,10 @@ index 9f9d3422ad128fe3bfc305baa57971bd03e1b676..02747c0d4d7f0bb7ba034f35bcce86a9
      service_manager::switches::kGpuSandboxAllowSysVShm,
      service_manager::switches::kGpuSandboxFailuresFatal,
 diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
-index e5a82f46cd58b0da9959930ee85303e4a1530425..753b926fbe0c6a3ef2b2e244d7f80f4f4574bc5c 100644
+index 305ffb2b7a1830c93f97450b3b79d5448cb9fad4..3832bd759c65aeccbe44c1b80f1291586177fb36 100644
 --- a/content/browser/renderer_host/render_process_host_impl.cc
 +++ b/content/browser/renderer_host/render_process_host_impl.cc
-@@ -227,6 +227,7 @@
+@@ -228,6 +228,7 @@
  #include "ui/accessibility/accessibility_switches.h"
  #include "ui/base/ui_base_switches.h"
  #include "ui/display/display_switches.h"
@@ -242,7 +242,7 @@ index e5a82f46cd58b0da9959930ee85303e4a1530425..753b926fbe0c6a3ef2b2e244d7f80f4f
  #include "ui/gl/gl_switches.h"
  #include "ui/native_theme/native_theme_features.h"
  #include "url/origin.h"
-@@ -3283,6 +3284,7 @@ void RenderProcessHostImpl::PropagateBrowserCommandLineToRenderer(
+@@ -3285,6 +3286,7 @@ void RenderProcessHostImpl::PropagateBrowserCommandLineToRenderer(
    // Propagate the following switches to the renderer command line (along
    // with any associated values) if present in the browser command line.
    static const char* const kSwitchNames[] = {
diff --git a/patches/chromium/disable_gpu_acceleration_on_all_mesa_software_rasterizers.patch b/patches/chromium/disable_gpu_acceleration_on_all_mesa_software_rasterizers.patch
new file mode 100644
index 0000000000000..bafc3a7aac8b8
--- /dev/null
+++ b/patches/chromium/disable_gpu_acceleration_on_all_mesa_software_rasterizers.patch
@@ -0,0 +1,73 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Kai Ninomiya <kainino@chromium.org>
+Date: Thu, 11 Feb 2021 02:24:04 +0000
+Subject: Disable GPU acceleration on all Mesa software rasterizers
+
+The previous entry only disabled acceleration on swrast, but softpipe
+and llvmpipe shouldn't be used for "GPU" acceleration either.
+This should apply to Linux but not ChromeOS, AFAICT.
+
+This only improves an existing software rendering list entry, but here
+is the rationale: We prefer to rely on our own (domain specific, so more
+efficient) software paths, at least for everything other than WebGL. And
+for WebGL, SwiftShader avoids unknown factors like
+llvmpipe/softpipe/swrast.
+
+If you are running a Mesa GL driver (not e.g. NVIDIA) then you can force
+these configurations with:
+- LIBGL_ALWAYS_SOFTWARE=1
+  https://docs.mesa3d.org/envvars.html#libgl-environment-variables:~:text=LIBGL_ALWAYS_SOFTWARE
+- GALLIUM_DRIVER=llvmpipe, softpipe, or swr (though swr didn't work for me)
+  https://docs.mesa3d.org/envvars.html#gallium-environment-variables:~:text=GALLIUM_DRIVER
+
+The GL_RENDERER strings are:
+- swrast: "Software Rasterizer" (couldn't test this locally; found this online)
+- softpipe: "softpipe" (on one machine)
+- llvmpipe: "llvmpipe (LLVM 10.0.0, 256 bits)" (on one machine)
+
+Drive-by updates the description of another item to be more accurate
+(SVGA3D is virtualized over hardware; it's not a software renderer).
+
+# Unrelated CQ failures on branch
+(cherry picked from commit 7c7eccfc85e387a0dcd154a2a9c2389177982837)
+
+No-Try: True
+Bug: 1155974
+Change-Id: I0571c1a1bf526260f7ea6cd53f88eec768973b13
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2645491
+Commit-Queue: Kai Ninomiya <kainino@chromium.org>
+Reviewed-by: Zhenyao Mo <zmo@chromium.org>
+Auto-Submit: Kai Ninomiya <kainino@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#846422}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2651183
+Reviewed-by: Kenneth Russell <kbr@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4324@{#2176}
+Cr-Branched-From: c73b5a651d37a6c4d0b8e3262cc4015a5579c6c8-refs/heads/master@{#827102}
+
+diff --git a/gpu/config/software_rendering_list.json b/gpu/config/software_rendering_list.json
+index 5b5c542dbc95e49f9f0e5330f99b94ab4ea72321..dd87f7c0cc928bd330ac156bce9391a36bca2db0 100644
+--- a/gpu/config/software_rendering_list.json
++++ b/gpu/config/software_rendering_list.json
+@@ -21,11 +21,11 @@
+     {
+       "id": 3,
+       "description": "GL driver is software rendered. GPU acceleration is disabled",
+-      "cr_bugs": [59302, 315217],
++      "cr_bugs": [59302, 315217, 1155974],
+       "os": {
+         "type": "linux"
+       },
+-      "gl_renderer": "(?i).*software.*",
++      "gl_renderer": "(?i).*(software|llvmpipe|softpipe).*",
+       "features": [
+         "all"
+       ]
+@@ -353,7 +353,7 @@
+     },
+     {
+       "id": 50,
+-      "description": "Disable VMware software renderer on older Mesa",
++      "description": "Disable VMware virtualized renderer on older Mesa",
+       "cr_bugs": [145531, 332596, 571899, 629434],
+       "os": {
+         "type": "linux"
diff --git a/patches/chromium/don_t_create_providers_if_context_is_lost.patch b/patches/chromium/don_t_create_providers_if_context_is_lost.patch
new file mode 100644
index 0000000000000..a93d1d885a2cd
--- /dev/null
+++ b/patches/chromium/don_t_create_providers_if_context_is_lost.patch
@@ -0,0 +1,75 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Robert Phillips <robertphillips@google.com>
+Date: Wed, 16 Sep 2020 18:42:32 +0000
+Subject: Don't create providers if context is lost
+
+CanvasResourceProvider::CreateSharedImageProvider receives a weak pointer
+to the ContextProviderWrapper and returns nullptr if it does not exist.
+
+Unfortunately SharedGpuContext::IsGpuCompositingEnabled can re-create
+the ContextProviderWrapper after this check happens, leading to potential
+use-after-frees.
+
+To me it simply makes the most sense to not create a CRP if context is
+lost, as the created provider would be invalid and nullptr would get
+returned anyway.
+
+Bug: 1126424
+Change-Id: Ic92709d7a38d94e5e7529efac3a09405d64eaa34
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2417097
+Reviewed-by: Juanmi Huertas <juanmihd@chromium.org>
+Reviewed-by: Fernando Serboncini <fserb@chromium.org>
+Commit-Queue: Aaron Krajeski <aaronhk@chromium.org>
+Cr-Commit-Position: refs/heads/master@{#809327}
+
+diff --git a/third_party/blink/renderer/platform/graphics/canvas_resource_provider.cc b/third_party/blink/renderer/platform/graphics/canvas_resource_provider.cc
+index 4635d4a38836150f3abafedeffaf31a20d6e77cf..8fb14df8be73ef83fe0e67946b684d2faa825f38 100644
+--- a/third_party/blink/renderer/platform/graphics/canvas_resource_provider.cc
++++ b/third_party/blink/renderer/platform/graphics/canvas_resource_provider.cc
+@@ -801,7 +801,16 @@ CanvasResourceProvider::CreateSharedImageProvider(
+     bool is_origin_top_left,
+     RasterMode raster_mode,
+     uint32_t shared_image_usage_flags) {
+-  if (!context_provider_wrapper)
++  // IsGpuCompositingEnabled can re-create the context if it has been lost, do
++  // this up front so that we can fail early and not expose ourselves to
++  // use after free bugs (crbug.com/1126424)
++  const bool is_gpu_compositing_enabled =
++      SharedGpuContext::IsGpuCompositingEnabled();
++
++  // If the context is lost we don't want to re-create it here, the resulting
++  // resource provider would be invalid anyway
++  if (!context_provider_wrapper ||
++      context_provider_wrapper->ContextProvider()->IsContextLost())
+     return nullptr;
+ 
+   const auto& capabilities =
+@@ -817,7 +826,7 @@ CanvasResourceProvider::CreateSharedImageProvider(
+   }
+ 
+   const bool is_gpu_memory_buffer_image_allowed =
+-      SharedGpuContext::IsGpuCompositingEnabled() &&
++      is_gpu_compositing_enabled &&
+       IsGMBAllowed(size, color_params, capabilities) &&
+       Platform::Current()->GetGpuMemoryBufferManager();
+ 
+@@ -850,6 +859,9 @@ CanvasResourceProvider::CreatePassThroughProvider(
+     const CanvasColorParams& color_params,
+     bool is_origin_top_left,
+     base::WeakPtr<CanvasResourceDispatcher> resource_dispatcher) {
++  // SharedGpuContext::IsGpuCompositingEnabled can potentially replace the
++  // context_provider_wrapper, so it's important to call that first as it can
++  // invalidate the weak pointer.
+   if (!SharedGpuContext::IsGpuCompositingEnabled() || !context_provider_wrapper)
+     return nullptr;
+ 
+@@ -883,6 +895,9 @@ CanvasResourceProvider::CreateSwapChainProvider(
+     const CanvasColorParams& color_params,
+     bool is_origin_top_left,
+     base::WeakPtr<CanvasResourceDispatcher> resource_dispatcher) {
++  // SharedGpuContext::IsGpuCompositingEnabled can potentially replace the
++  // context_provider_wrapper, so it's important to call that first as it can
++  // invalidate the weak pointer.
+   DCHECK(is_origin_top_left);
+   if (!SharedGpuContext::IsGpuCompositingEnabled() || !context_provider_wrapper)
+     return nullptr;
diff --git a/patches/chromium/fileapi_terminate_filereaderloader_before_dispatching_onabort_event.patch b/patches/chromium/fileapi_terminate_filereaderloader_before_dispatching_onabort_event.patch
new file mode 100644
index 0000000000000..7adfba2e0c069
--- /dev/null
+++ b/patches/chromium/fileapi_terminate_filereaderloader_before_dispatching_onabort_event.patch
@@ -0,0 +1,58 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Andrey Belenko <andrey.belenko@gmail.com>
+Date: Wed, 19 May 2021 12:29:29 +0200
+Subject: FileAPI: Terminate FileReaderLoader before dispatching onabort event.
+
+Otherwise FileReader could end up in an inconsistent state where a load
+is still in progress while the state was set to done.
+
+(cherry picked from commit a74c980df61dd7367ad1b11e6a735be82d2696f0)
+
+Bug: 1201073
+Change-Id: Ib2c833537e1badc57d125568d5d35f53f12582a8
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2860442
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2871355
+
+diff --git a/third_party/blink/renderer/core/fileapi/file_reader.cc b/third_party/blink/renderer/core/fileapi/file_reader.cc
+index 978d71510a5a0a790ea86dcd5413665ff624619c..8549fbef76a79cc4eff0fdc262e39720bfff40ba 100644
+--- a/third_party/blink/renderer/core/fileapi/file_reader.cc
++++ b/third_party/blink/renderer/core/fileapi/file_reader.cc
+@@ -337,7 +337,10 @@ void FileReader::abort() {
+   loading_state_ = kLoadingStateAborted;
+ 
+   DCHECK_NE(kDone, state_);
+-  state_ = kDone;
++  // Synchronously cancel the loader before dispatching events. This way we make
++  // sure the FileReader internal state stays consistent even if another load
++  // is started from one of the event handlers, or right after abort returns.
++  Terminate();
+ 
+   base::AutoReset<bool> firing_events(&still_firing_events_, true);
+ 
+@@ -349,15 +352,12 @@ void FileReader::abort() {
+       ThrottlingController::RemoveReader(GetExecutionContext(), this);
+ 
+   FireEvent(event_type_names::kAbort);
++  // TODO(https://crbug.com/1204139): Only fire loadend event if no new load was
++  // started from the abort event handler.
+   FireEvent(event_type_names::kLoadend);
+ 
+   // All possible events have fired and we're done, no more pending activity.
+   ThrottlingController::FinishReader(GetExecutionContext(), this, final_step);
+-
+-  // Also synchronously cancel the loader, as script might initiate a new load
+-  // right after this method returns, in which case an async termination would
+-  // terminate the wrong loader.
+-  Terminate();
+ }
+ 
+ void FileReader::result(ScriptState* state,
+@@ -429,6 +429,8 @@ void FileReader::DidFinishLoading() {
+       ThrottlingController::RemoveReader(GetExecutionContext(), this);
+ 
+   FireEvent(event_type_names::kLoad);
++  // TODO(https://crbug.com/1204139): Only fire loadend event if no new load was
++  // started from the abort event handler.
+   FireEvent(event_type_names::kLoadend);
+ 
+   // All possible events have fired and we're done, no more pending activity.
diff --git a/patches/chromium/fix_heap_overflow_in_videoframeyuvconverter.patch b/patches/chromium/fix_heap_overflow_in_videoframeyuvconverter.patch
new file mode 100644
index 0000000000000..e3854c31aea6c
--- /dev/null
+++ b/patches/chromium/fix_heap_overflow_in_videoframeyuvconverter.patch
@@ -0,0 +1,72 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Nathan Zabriskie <nazabris@microsoft.com>
+Date: Fri, 5 Feb 2021 20:44:16 +0000
+Subject: Fix heap overflow in VideoFrameYUVConverter
+
+Currently with some texture sizes GLES2Util::ComputeImageDataSizesES3
+will attempt to add row padding when calculating the size of a
+VideoFrame plane. This is because it's currently assumed that each row
+aligns on a 4 byte boundary based on GL_UNPACK_ALIGNMENT but
+VideoFrames make no such guarantee as they may be densely packed.
+This CL removes the GL_UNPACK_ALIGNMENT assumption so that we only use
+the VideoFrame's stride when calculating padding.
+
+(cherry picked from commit 7de5d0ecb5a4f73aeffe15d825bf694d0d8e2a08)
+
+Bug: 1166504, 1161131
+Change-Id: I2484f5dfd2ad85b088fee57758776a5c9bd01d95
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2642765
+Reviewed-by: Vasiliy Telezhnikov <vasilyt@chromium.org>
+Commit-Queue: Nathan Zabriskie <nazabris@microsoft.com>
+Cr-Original-Commit-Position: refs/heads/master@{#846298}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2679121
+Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
+Auto-Submit: Nathan Zabriskie <nazabris@microsoft.com>
+Cr-Commit-Position: refs/branch-heads/4324@{#2115}
+Cr-Branched-From: c73b5a651d37a6c4d0b8e3262cc4015a5579c6c8-refs/heads/master@{#827102}
+
+diff --git a/gpu/command_buffer/client/gles2_implementation.cc b/gpu/command_buffer/client/gles2_implementation.cc
+index 49d050e7e0d8efabeb7cf1ed46041931394d43b4..4e5f869203d6b99b3368d3264830799d2d62006b 100644
+--- a/gpu/command_buffer/client/gles2_implementation.cc
++++ b/gpu/command_buffer/client/gles2_implementation.cc
+@@ -840,7 +840,9 @@ bool GLES2Implementation::GetHelper(GLenum pname, GLint* params) {
+     case GL_GPU_DISJOINT_EXT:
+       *params = static_cast<GLint>(query_tracker_->CheckAndResetDisjoint());
+       return true;
+-
++    case GL_UNPACK_ALIGNMENT:
++      *params = unpack_alignment_;
++      return true;
+     case GL_VIEWPORT:
+       if (state_.viewport_width > 0 && state_.viewport_height > 0 &&
+           capabilities_.max_viewport_width > 0 &&
+@@ -922,7 +924,6 @@ bool GLES2Implementation::GetHelper(GLenum pname, GLint* params) {
+     case GL_STENCIL_VALUE_MASK:
+     case GL_STENCIL_WRITEMASK:
+     case GL_SUBPIXEL_BITS:
+-    case GL_UNPACK_ALIGNMENT:
+       return false;
+     default:
+       break;
+diff --git a/gpu/command_buffer/client/raster_implementation_gles.cc b/gpu/command_buffer/client/raster_implementation_gles.cc
+index 299dd4f9874bf7f68563d524167db7180a200e14..f7d794ffbca21b055a9be91fa4b77be79896a730 100644
+--- a/gpu/command_buffer/client/raster_implementation_gles.cc
++++ b/gpu/command_buffer/client/raster_implementation_gles.cc
+@@ -178,6 +178,9 @@ void RasterImplementationGLES::WritePixels(const gpu::Mailbox& dest_mailbox,
+   BeginSharedImageAccessDirectCHROMIUM(
+       texture_id, GL_SHARED_IMAGE_ACCESS_MODE_READWRITE_CHROMIUM);
+ 
++  GLint old_align = 0;
++  gl_->GetIntegerv(GL_UNPACK_ALIGNMENT, &old_align);
++  gl_->PixelStorei(GL_UNPACK_ALIGNMENT, 1);
+   gl_->PixelStorei(GL_UNPACK_ROW_LENGTH, row_bytes / src_info.bytesPerPixel());
+   gl_->BindTexture(texture_target, texture_id);
+   gl_->TexSubImage2D(texture_target, 0, dst_x_offset, dst_y_offset,
+@@ -186,6 +189,7 @@ void RasterImplementationGLES::WritePixels(const gpu::Mailbox& dest_mailbox,
+                      SkColorTypeToGLDataType(src_info.colorType()), src_pixels);
+   gl_->BindTexture(texture_target, 0);
+   gl_->PixelStorei(GL_UNPACK_ROW_LENGTH, 0);
++  gl_->PixelStorei(GL_UNPACK_ALIGNMENT, old_align);
+ 
+   EndSharedImageAccessDirectCHROMIUM(texture_id);
+   DeleteGpuRasterTexture(texture_id);
diff --git a/patches/chromium/fix_properly_honor_printing_page_ranges.patch b/patches/chromium/fix_properly_honor_printing_page_ranges.patch
new file mode 100644
index 0000000000000..354397b278df8
--- /dev/null
+++ b/patches/chromium/fix_properly_honor_printing_page_ranges.patch
@@ -0,0 +1,127 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Shelley Vohr <shelley.vohr@gmail.com>
+Date: Wed, 23 Sep 2020 10:27:57 -0700
+Subject: fix: properly honor printing page ranges
+
+The print ranges in Chromium's print job settings were not being properly
+plumbed through to PMPrintSettings on mcOS. This fixes that by setting
+them should they exist.
+
+diff --git a/printing/printing_context_mac.h b/printing/printing_context_mac.h
+index 06cdc0e1a4a50e29a148c97c964c30a939e800da..5db5cdb61be0beee4506313dcde46c499e011383 100644
+--- a/printing/printing_context_mac.h
++++ b/printing/printing_context_mac.h
+@@ -81,6 +81,10 @@ class PRINTING_EXPORT PrintingContextMac : public PrintingContext {
+   // Returns true if the orientation was set.
+   bool SetOrientationIsLandscape(bool landscape);
+ 
++  // Set the page range in native print info object.
++  // Returns true if the range was set.
++  bool SetPrintRangeInPrintSettings(const PageRanges& ranges);
++
+   // Sets duplex mode in PMPrintSettings.
+   // Returns true if duplex mode is set.
+   bool SetDuplexModeInPrintSettings(mojom::DuplexMode mode);
+diff --git a/printing/printing_context_mac.mm b/printing/printing_context_mac.mm
+index 93438609a3a0eaeec0dbc76efe5c46e03fb40e52..dc64546f7d88db3b48f379b34c7dcc49b692a048 100644
+--- a/printing/printing_context_mac.mm
++++ b/printing/printing_context_mac.mm
+@@ -186,7 +186,8 @@ PrintingContext::Result PrintingContextMac::UpdatePrinterSettings(
+         !SetCopiesInPrintSettings(settings_->copies()) ||
+         !SetCollateInPrintSettings(settings_->collate()) ||
+         !SetDuplexModeInPrintSettings(settings_->duplex_mode()) ||
+-        !SetOutputColor(settings_->color())) {
++        !SetOutputColor(settings_->color()) ||
++        !SetPrintRangeInPrintSettings(settings_->ranges())) {
+       return OnError();
+     }
+   }
+@@ -339,6 +340,22 @@ bool PrintingContextMac::SetCopiesInPrintSettings(int copies) {
+   return PMSetCopies(print_settings, copies, false) == noErr;
+ }
+ 
++bool PrintingContextMac::SetPrintRangeInPrintSettings(const PageRanges& ranges) {
++  // Default is already NSPrintAllPages - we can safely bail.
++  if (ranges.empty())
++    return true; 
++
++  auto* print_settings =
++      static_cast<PMPrintSettings>([print_info_.get() PMPrintSettings]);
++
++  // macOS does not allow multiple ranges, so pluck the first.
++  auto range = ranges.front();
++  bool set_first_page = PMSetFirstPage(print_settings, range.from + 1, false) == noErr;
++  bool set_last_page = PMSetLastPage(print_settings, range.to + 1, false) == noErr;
++
++  return set_first_page && set_last_page;
++}
++
+ bool PrintingContextMac::SetCollateInPrintSettings(bool collate) {
+   PMPrintSettings print_settings =
+       static_cast<PMPrintSettings>([print_info_.get() PMPrintSettings]);
+diff --git a/printing/printing_context_system_dialog_win.cc b/printing/printing_context_system_dialog_win.cc
+index a53e4045bdc8a4ea68720c7a4792599097792814..1cb0c34dce72f99d8689e37f2a5d587767d224bf 100644
+--- a/printing/printing_context_system_dialog_win.cc
++++ b/printing/printing_context_system_dialog_win.cc
+@@ -52,14 +52,28 @@ void PrintingContextSystemDialogWin::AskUserForSettings(
+   PRINTPAGERANGE ranges[32];
+   dialog_options.nStartPage = START_PAGE_GENERAL;
+   if (max_pages) {
+-    // Default initialize to print all the pages.
+     memset(ranges, 0, sizeof(ranges));
+-    ranges[0].nFromPage = 1;
+-    ranges[0].nToPage = max_pages;
+-    dialog_options.nPageRanges = 1;
+-    dialog_options.nMaxPageRanges = base::size(ranges);
++
++    auto page_ranges = settings_->ranges();
++    if (!page_ranges.empty()) {
++      for (size_t i = 0; i < page_ranges.size(); i++) {
++        auto range = page_ranges[i];
++        ranges[i].nFromPage = range.from + 1;
++        ranges[i].nToPage = range.to + 1;
++      }
++      dialog_options.nPageRanges = page_ranges.size();
++
++      // Ensure the Pages radio button is selected.
++      dialog_options.Flags |= PD_PAGENUMS;
++    } else {
++      ranges[0].nFromPage = 1;
++      ranges[0].nToPage = max_pages;
++      dialog_options.nPageRanges = 1;
++    }
++
+     dialog_options.nMinPage = 1;
+     dialog_options.nMaxPage = max_pages;
++    dialog_options.nMaxPageRanges = base::size(ranges);
+     dialog_options.lpPageRanges = ranges;
+   } else {
+     // No need to bother, we don't know how many pages are available.
+diff --git a/ui/gtk/printing/print_dialog_gtk.cc b/ui/gtk/printing/print_dialog_gtk.cc
+index 57900d2854d7c3cb427bc3bd8b1742335ab820b8..166e7eeb9c46f04664fe8986767114b9f4809b71 100644
+--- a/ui/gtk/printing/print_dialog_gtk.cc
++++ b/ui/gtk/printing/print_dialog_gtk.cc
+@@ -240,6 +240,23 @@ void PrintDialogGtk::UpdateSettings(
+   gtk_print_settings_set_n_copies(gtk_settings_, settings->copies());
+   gtk_print_settings_set_collate(gtk_settings_, settings->collate());
+ 
++  auto print_ranges = settings->ranges();
++  if (!print_ranges.empty()) {
++    // Tell the system that we only intend to print a subset of pages.
++    gtk_print_settings_set_print_pages(gtk_settings_, GTK_PRINT_PAGES_RANGES);
++
++    GtkPageRange* ranges;
++    ranges = g_new(GtkPageRange, print_ranges.size());
++    for (size_t i = 0; i < print_ranges.size(); i++) {
++      auto range = print_ranges[i];
++      ranges[i].start = range.from;
++      ranges[i].end = range.to;
++    }
++
++    gtk_print_settings_set_page_ranges(gtk_settings_, ranges, 1);
++    g_free(ranges);
++  }
++
+ #if defined(USE_CUPS)
+   // Set advanced settings first so they can be overridden by user applied
+   // settings.
diff --git a/patches/chromium/fix_setparentacessibile_crash_win.patch b/patches/chromium/fix_setparentacessibile_crash_win.patch
new file mode 100644
index 0000000000000..9e1a8c3b403f7
--- /dev/null
+++ b/patches/chromium/fix_setparentacessibile_crash_win.patch
@@ -0,0 +1,28 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Biru Mohanathas <birunthan@mohanathas.com>
+Date: Thu, 10 Dec 2020 19:02:37 +0200
+Subject: fix crash in NativeViewHost::SetParentAccessible
+
+This fixes random crashes on Windows 10. It presumably started happening
+after the changes in
+https://chromium.googlesource.com/chromium/src.git/+/5c6c8e994bce2bfb867279ae5068e9f9134e70c3%5E!/#F15
+
+For context, see: https://github.com/electron/electron/issues/26905
+
+This patch can likely be upstreamed. The crash cannot be fixed without
+patching something in Chromium - this is the least invasive change.
+
+diff --git a/ui/views/controls/native/native_view_host.cc b/ui/views/controls/native/native_view_host.cc
+index 4779e4f07d923b5af9ba05c2765cf294e75dcc14..6112217d532251f7f6850c23be5c312a908df1e2 100644
+--- a/ui/views/controls/native/native_view_host.cc
++++ b/ui/views/controls/native/native_view_host.cc
+@@ -54,6 +54,9 @@ void NativeViewHost::Detach() {
+ }
+ 
+ void NativeViewHost::SetParentAccessible(gfx::NativeViewAccessible accessible) {
++  if (!native_wrapper_.get())
++    return;
++
+   native_wrapper_->SetParentAccessible(accessible);
+ }
+ 
diff --git a/patches/chromium/fix_use_electron_generated_resources.patch b/patches/chromium/fix_use_electron_generated_resources.patch
new file mode 100644
index 0000000000000..bd59ee8c468db
--- /dev/null
+++ b/patches/chromium/fix_use_electron_generated_resources.patch
@@ -0,0 +1,52 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Shelley Vohr <shelley.vohr@gmail.com>
+Date: Thu, 24 Sep 2020 11:10:41 -0700
+Subject: fix: use electron generated resources
+
+This patch fixes a few instances where we need to use Electron generated
+resources for IDS strings, or the IDs will be wrong and cause DCHECKS
+as they will loaded as empty strings.
+
+* IDS_UTILITY_PROCESS_UTILITY_WIN_NAME on Windows
+* IDR_PDF_MANIFEST on Linux
+* IDS_UTILITY_PROCESS_PRINTING_SERVICE_NAME on Windows
+
+diff --git a/chrome/browser/pdf/pdf_extension_util.cc b/chrome/browser/pdf/pdf_extension_util.cc
+index 9fd9791fd923d6c5e741cb7dc064ababf9a7995a..0a5534f2f09224196971076794daa3c805c91606 100644
+--- a/chrome/browser/pdf/pdf_extension_util.cc
++++ b/chrome/browser/pdf/pdf_extension_util.cc
+@@ -8,7 +8,7 @@
+ #include "base/values.h"
+ #include "chrome/browser/browser_process.h"
+ #include "chrome/common/chrome_content_client.h"
+-#include "chrome/grit/browser_resources.h"
++#include "electron/grit/electron_resources.h"
+ #include "components/strings/grit/components_strings.h"
+ #include "components/zoom/page_zoom_constants.h"
+ #include "pdf/pdf_features.h"
+diff --git a/chrome/browser/printing/printing_service.cc b/chrome/browser/printing/printing_service.cc
+index 2b73b110049b5e8d28b52656bbd2423e18ba07a0..8fd868b39d64c74aa189b8ca3e24c8537d91b1ba 100644
+--- a/chrome/browser/printing/printing_service.cc
++++ b/chrome/browser/printing/printing_service.cc
+@@ -6,7 +6,7 @@
+ 
+ #include "base/no_destructor.h"
+ #include "chrome/browser/service_sandbox_type.h"
+-#include "chrome/grit/generated_resources.h"
++#include "electron/grit/electron_resources.h"
+ #include "content/public/browser/service_process_host.h"
+ 
+ const mojo::Remote<printing::mojom::PrintingService>& GetPrintingService() {
+diff --git a/chrome/browser/win/icon_reader_service.cc b/chrome/browser/win/icon_reader_service.cc
+index 721e1a863cc6925908f8343002df056f2373bf0b..10b2a95162541a8ff4d010c7be864f3f41dae378 100644
+--- a/chrome/browser/win/icon_reader_service.cc
++++ b/chrome/browser/win/icon_reader_service.cc
+@@ -5,7 +5,7 @@
+ #include "chrome/browser/win/icon_reader_service.h"
+ 
+ #include "chrome/browser/service_sandbox_type.h"
+-#include "chrome/grit/generated_resources.h"
++#include "electron/grit/electron_resources.h"
+ #include "content/public/browser/service_process_host.h"
+ 
+ mojo::Remote<chrome::mojom::UtilReadIcon> LaunchIconReaderInstance() {
diff --git a/patches/chromium/gpu_notify_when_dxdiag_request_fails.patch b/patches/chromium/gpu_notify_when_dxdiag_request_fails.patch
index 6df36ebd40698..f4db5eaf00107 100644
--- a/patches/chromium/gpu_notify_when_dxdiag_request_fails.patch
+++ b/patches/chromium/gpu_notify_when_dxdiag_request_fails.patch
@@ -12,10 +12,10 @@ rendering and there is no signal from browser process on this event
 to identify it.
 
 diff --git a/content/browser/gpu/gpu_data_manager_impl.cc b/content/browser/gpu/gpu_data_manager_impl.cc
-index 0f73a8d0da336036e663927424a3a0ccba9e4f7b..e2fe4908e8e459bb277dfd6becdc486714e814ea 100644
+index f266f1b45a423db92f59e2d6acbea659cef92de7..2f6b86f3f77e0fe8b1d86831b0f492cd35627f98 100644
 --- a/content/browser/gpu/gpu_data_manager_impl.cc
 +++ b/content/browser/gpu/gpu_data_manager_impl.cc
-@@ -188,6 +188,11 @@ void GpuDataManagerImpl::TerminateInfoCollectionGpuProcess() {
+@@ -229,6 +229,11 @@ void GpuDataManagerImpl::TerminateInfoCollectionGpuProcess() {
    base::AutoLock auto_lock(lock_);
    private_->TerminateInfoCollectionGpuProcess();
  }
@@ -28,10 +28,10 @@ index 0f73a8d0da336036e663927424a3a0ccba9e4f7b..e2fe4908e8e459bb277dfd6becdc4867
  
  void GpuDataManagerImpl::UpdateGpuFeatureInfo(
 diff --git a/content/browser/gpu/gpu_data_manager_impl.h b/content/browser/gpu/gpu_data_manager_impl.h
-index 2e069f00bb0f2c263b60662988548b246b74e5d9..82e9a19b6502aeab8f5d14098f2e5c5f995c3425 100644
+index b1cb1060511872c07ffd7e7ccfebdbe31233e677..5cdcc8f6445afbe2a46946d7342fd386ccaa6177 100644
 --- a/content/browser/gpu/gpu_data_manager_impl.h
 +++ b/content/browser/gpu/gpu_data_manager_impl.h
-@@ -95,6 +95,7 @@ class CONTENT_EXPORT GpuDataManagerImpl : public GpuDataManager,
+@@ -97,6 +97,7 @@ class CONTENT_EXPORT GpuDataManagerImpl : public GpuDataManager,
    // Called from BrowserMainLoop::BrowserThreadsStarted().
    void OnBrowserThreadsStarted();
    void TerminateInfoCollectionGpuProcess();
@@ -40,7 +40,7 @@ index 2e069f00bb0f2c263b60662988548b246b74e5d9..82e9a19b6502aeab8f5d14098f2e5c5f
    // Update the GPU feature info. This updates the blacklist and enabled status
    // of GPU rasterization. In the future this will be used for more features.
 diff --git a/content/browser/gpu/gpu_data_manager_impl_private.cc b/content/browser/gpu/gpu_data_manager_impl_private.cc
-index 54a2d002794e3cf3c40799e437456dd37df51503..4faf21eab883aa7095d712678ceea95975bdd18f 100644
+index e88f18d51f0844cb46e991be695b1637c564defe..a19d9391241a3cd0bbf907675c3f3c7a91aee0ad 100644
 --- a/content/browser/gpu/gpu_data_manager_impl_private.cc
 +++ b/content/browser/gpu/gpu_data_manager_impl_private.cc
 @@ -1063,6 +1063,11 @@ void GpuDataManagerImplPrivate::TerminateInfoCollectionGpuProcess() {
@@ -56,7 +56,7 @@ index 54a2d002794e3cf3c40799e437456dd37df51503..4faf21eab883aa7095d712678ceea959
  
  void GpuDataManagerImplPrivate::UpdateGpuFeatureInfo(
 diff --git a/content/browser/gpu/gpu_data_manager_impl_private.h b/content/browser/gpu/gpu_data_manager_impl_private.h
-index ef74bd7541a2a47e71289b154221a5f5adf1e90b..100d393550d57c24bb0c9dc6d604ed925930bb07 100644
+index 563472dcafa05b827218a301ad621236dbd2d864..8e5ceb626b4690906411ca81b8f89b9c5efeb165 100644
 --- a/content/browser/gpu/gpu_data_manager_impl_private.h
 +++ b/content/browser/gpu/gpu_data_manager_impl_private.h
 @@ -75,6 +75,7 @@ class CONTENT_EXPORT GpuDataManagerImplPrivate {
diff --git a/patches/chromium/guard_webcontents_downloadimage_against_malformed_renderer.patch b/patches/chromium/guard_webcontents_downloadimage_against_malformed_renderer.patch
new file mode 100644
index 0000000000000..278e0b8c6a5e3
--- /dev/null
+++ b/patches/chromium/guard_webcontents_downloadimage_against_malformed_renderer.patch
@@ -0,0 +1,231 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Andrey Belenko <andrey.belenko@gmail.com>
+Date: Wed, 19 May 2021 12:19:16 +0200
+Subject: Guard WebContents::DownloadImage() against malformed renderer
+ response
+
+Callers expect that ImageDownloadCallback gets invoked with two vectors
+having the same number of elements (one containing the bitmaps and the
+other one the corresponding sizes).
+
+However, these vectors are populated directly from the Mojo response,
+so there needs to be some browser-process sanitization to protect
+against buggy or compromised renderers.
+
+In this patch, WebContentsImpl::OnDidDownloadImage() mimics a 400 error
+if the response is malformed, similarly to how it's done in other edge
+cases (renderer process dead upon download). Because this scenario is
+a violation of the Mojo API contract, the browser process also issues
+a bad message log (newly-introduced WCI_INVALID_DOWNLOAD_IMAGE_RESULT)
+and shuts down the renderer process.
+
+(cherry picked from commit 034ba14e44f08e8ca84b42350f3238f847e08e5f)
+
+Change-Id: Ic0843e10efc26809fabd8f1bbe506ba1703d1486
+Fixed: 1201446
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2871796
+
+diff --git a/components/favicon/core/favicon_handler.cc b/components/favicon/core/favicon_handler.cc
+index 64eab051de73b0b259c1f31e93f750d352724521..410ffc64e8f70a29a39cc4fb228dfd720bfe04d7 100644
+--- a/components/favicon/core/favicon_handler.cc
++++ b/components/favicon/core/favicon_handler.cc
+@@ -492,6 +492,8 @@ void FaviconHandler::OnDidDownloadFavicon(
+     const GURL& image_url,
+     const std::vector<SkBitmap>& bitmaps,
+     const std::vector<gfx::Size>& original_bitmap_sizes) {
++  DCHECK_EQ(bitmaps.size(), original_bitmap_sizes.size());
++  
+   // Mark download as finished.
+   image_download_request_.Cancel();
+ 
+diff --git a/components/favicon/core/favicon_handler.h b/components/favicon/core/favicon_handler.h
+index 8a1cf2ef85745711e94ec6e7f6f27acb1482cbd6..4192138711de470eee713fc1fb200cc29d333342 100644
+--- a/components/favicon/core/favicon_handler.h
++++ b/components/favicon/core/favicon_handler.h
+@@ -237,7 +237,9 @@ class FaviconHandler {
+   void ScheduleImageDownload(const GURL& image_url,
+                              favicon_base::IconType icon_type);
+ 
+-  // Triggered when a download of an image has finished.
++  // Triggered when a download of an image has finished. |bitmaps| and
++  // |original_bitmap_sizes| must contain the same number of elements (i.e. same
++  // vector size).
+   void OnDidDownloadFavicon(
+       favicon_base::IconType icon_type,
+       int id,
+diff --git a/components/favicon/ios/web_favicon_driver.mm b/components/favicon/ios/web_favicon_driver.mm
+index 6efaf651bdf939d83e1a7f9df339f714410565ad..71ae020efd8862d2b33cb91df9180ef63df1f6f9 100644
+--- a/components/favicon/ios/web_favicon_driver.mm
++++ b/components/favicon/ios/web_favicon_driver.mm
+@@ -75,6 +75,7 @@ int WebFaviconDriver::DownloadImage(const GURL& url,
+           for (const auto& frame : frames) {
+             sizes.push_back(gfx::Size(frame.width(), frame.height()));
+           }
++          DCHECK_EQ(frames.size(), sizes.size());
+         }
+         std::move(local_callback)
+             .Run(local_download_id, metadata.http_response_code, local_url,
+diff --git a/components/favicon_base/select_favicon_frames.cc b/components/favicon_base/select_favicon_frames.cc
+index 90b58e621492d0e503f7965de91581c0a451d163..73cd7dd5331a818f413d831b4ae596bc88805a8a 100644
+--- a/components/favicon_base/select_favicon_frames.cc
++++ b/components/favicon_base/select_favicon_frames.cc
+@@ -216,6 +216,7 @@ gfx::ImageSkia CreateFaviconImageSkia(
+     const std::vector<gfx::Size>& original_sizes,
+     int desired_size_in_dip,
+     float* score) {
++  DCHECK_EQ(bitmaps.size(), original_sizes.size());
+ 
+   const std::vector<float>& favicon_scales = favicon_base::GetFaviconScales();
+   std::vector<int> desired_sizes;
+diff --git a/components/favicon_base/select_favicon_frames.h b/components/favicon_base/select_favicon_frames.h
+index 573a38c79cddf839622488589b71b4d19fbdfba6..eab1e54466763e5a6a6069a29e877da054972fa8 100644
+--- a/components/favicon_base/select_favicon_frames.h
++++ b/components/favicon_base/select_favicon_frames.h
+@@ -38,6 +38,8 @@ extern const float kSelectFaviconFramesInvalidScore;
+ // it inspired by this method.
+ // If an unsupported scale (not in the favicon_base::GetFaviconScales())
+ // is requested, the ImageSkia will automatically scales using lancoz3.
++// |original_sizes| represents the pixel sizes of the favicon bitmaps in
++// |bitmaps|, which also means both vectors must have the same size.
+ gfx::ImageSkia CreateFaviconImageSkia(
+     const std::vector<SkBitmap>& bitmaps,
+     const std::vector<gfx::Size>& original_sizes,
+diff --git a/content/browser/bad_message.h b/content/browser/bad_message.h
+index ab0a195c2da772ea5825bb97e54743318bd06841..efc803efe24f61012882399035f6d96aed799595 100644
+--- a/content/browser/bad_message.h
++++ b/content/browser/bad_message.h
+@@ -256,6 +256,15 @@ enum BadMessageReason {
+   INPUT_ROUTER_INVALID_EVENT_SOURCE = 228,
+   RWH_CLOSE_PORTAL = 233,
+   MSDH_INVALID_STREAM_TYPE = 234,
++  RFH_CREATE_CHILD_FRAME_TOKENS_NOT_FOUND = 235,
++  ASGH_ASSOCIATED_INTERFACE_REQUEST = 236,
++  ASGH_RECEIVED_CONTROL_MESSAGE = 237,
++  CSDH_BAD_OWNER = 238,
++  SYNC_COMPOSITOR_NO_LOCAL_SURFACE_ID = 239,
++  WCI_INVALID_FULLSCREEN_OPTIONS = 240,
++  PAYMENTS_WITHOUT_PERMISSION = 241,
++  WEB_BUNDLE_INVALID_NAVIGATION_URL = 242,
++  WCI_INVALID_DOWNLOAD_IMAGE_RESULT = 243,
+ 
+   // Please add new elements here. The naming convention is abbreviated class
+   // name (e.g. RenderFrameHost becomes RFH) plus a unique description of the
+diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
+index a7c76413b86fac18f6f1f54c87e67218f094e6b2..67deba5a7ab4265c76fe18990ede82c2705efe70 100644
+--- a/content/browser/web_contents/web_contents_impl.cc
++++ b/content/browser/web_contents/web_contents_impl.cc
+@@ -160,6 +160,7 @@
+ #include "third_party/blink/public/common/security/security_style.h"
+ #include "third_party/blink/public/mojom/frame/frame.mojom.h"
+ #include "third_party/blink/public/mojom/frame/fullscreen.mojom.h"
++#include "third_party/blink/public/mojom/image_downloader/image_downloader.mojom.h"
+ #include "third_party/blink/public/mojom/loader/pause_subresource_loading_handle.mojom.h"
+ #include "third_party/blink/public/mojom/mediastream/media_stream.mojom-shared.h"
+ #include "third_party/skia/include/core/SkBitmap.h"
+@@ -4295,18 +4296,18 @@ int WebContentsImpl::DownloadImageInFrame(
+     // respond with a 400 HTTP error code to indicate that something went wrong.
+     GetUIThreadTaskRunner({})->PostTask(
+         FROM_HERE,
+-        base::BindOnce(&WebContentsImpl::OnDidDownloadImage,
+-                       weak_factory_.GetWeakPtr(), std::move(callback),
+-                       download_id, url, 400, std::vector<SkBitmap>(),
+-                       std::vector<gfx::Size>()));
++        base::BindOnce(
++            &WebContentsImpl::OnDidDownloadImage, weak_factory_.GetWeakPtr(),
++            initiator_frame->GetWeakPtr(), std::move(callback), download_id,
++            url, 400, std::vector<SkBitmap>(), std::vector<gfx::Size>()));
+     return download_id;
+   }
+ 
+   mojo_image_downloader->DownloadImage(
+       url, is_favicon, preferred_size, max_bitmap_size, bypass_cache,
+       base::BindOnce(&WebContentsImpl::OnDidDownloadImage,
+-                     weak_factory_.GetWeakPtr(), std::move(callback),
+-                     download_id, url));
++                     weak_factory_.GetWeakPtr(), initiator_frame->GetWeakPtr(),
++                     std::move(callback), download_id, url));
+   return download_id;
+ }
+ 
+@@ -6829,12 +6830,28 @@ bool WebContentsImpl::CompletedFirstVisuallyNonEmptyPaint() {
+ }
+ 
+ void WebContentsImpl::OnDidDownloadImage(
++    base::WeakPtr<RenderFrameHostImpl> rfh,
+     ImageDownloadCallback callback,
+     int id,
+     const GURL& image_url,
+     int32_t http_status_code,
+     const std::vector<SkBitmap>& images,
+     const std::vector<gfx::Size>& original_image_sizes) {
++
++  // Guard against buggy or compromised renderers that could violate the API
++  // contract that |images| and |original_image_sizes| must have the same
++  // length.
++  if (images.size() != original_image_sizes.size()) {
++    if (rfh) {
++      ReceivedBadMessage(rfh->GetProcess(),
++                         bad_message::WCI_INVALID_DOWNLOAD_IMAGE_RESULT);
++    }
++    // Respond with a 400 to indicate that something went wrong.
++    std::move(callback).Run(id, 400, image_url, std::vector<SkBitmap>(),
++                            std::vector<gfx::Size>());
++    return;
++  }
++
+   std::move(callback).Run(id, http_status_code, image_url, images,
+                           original_image_sizes);
+ }
+diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
+index 14586316aedab1e99f1b700ecc0e092c86414ee3..ffd53b3dc3ef0553711106f302e9f69b76b49081 100644
+--- a/content/browser/web_contents/web_contents_impl.h
++++ b/content/browser/web_contents/web_contents_impl.h
+@@ -1403,7 +1403,8 @@ class CONTENT_EXPORT WebContentsImpl : public WebContents,
+       std::set<RenderWidgetHostView*>& result);
+ 
+   // Called with the result of a DownloadImage() request.
+-  void OnDidDownloadImage(ImageDownloadCallback callback,
++  void OnDidDownloadImage(base::WeakPtr<RenderFrameHostImpl> rfh,
++                          ImageDownloadCallback callback,
+                           int id,
+                           const GURL& image_url,
+                           int32_t http_status_code,
+diff --git a/content/public/browser/web_contents.h b/content/public/browser/web_contents.h
+index ca7651246f812259e43d5dbc429ae4a95ed60e94..a4572de2ee43ef0c2bb3a785f29974ebb8c1362c 100644
+--- a/content/public/browser/web_contents.h
++++ b/content/public/browser/web_contents.h
+@@ -896,8 +896,9 @@ class WebContents : public PageNavigator,
+   // |bitmaps| will be empty on download failure.
+   // |sizes| are the sizes in pixels of the bitmaps before they were resized due
+   // to the max bitmap size passed to DownloadImage(). Each entry in the bitmaps
+-  // vector corresponds to an entry in the sizes vector. If a bitmap was
+-  // resized, there should be a single returned bitmap.
++  // vector corresponds to an entry in the sizes vector (both vector sizes are
++  // guaranteed to be equal). If a bitmap was resized, there should be a single
++  // returned bitmap.
+   using ImageDownloadCallback =
+       base::OnceCallback<void(int id,
+                               int http_status_code,
+diff --git a/third_party/blink/renderer/modules/image_downloader/image_downloader_impl.cc b/third_party/blink/renderer/modules/image_downloader/image_downloader_impl.cc
+index fb0fc97d689c8c6b1f6f9fa27d250e0438550725..740c6c01318a1d9d2914ddef9949db9ced559d14 100644
+--- a/third_party/blink/renderer/modules/image_downloader/image_downloader_impl.cc
++++ b/third_party/blink/renderer/modules/image_downloader/image_downloader_impl.cc
+@@ -79,7 +79,8 @@ SkBitmap ResizeImage(const SkBitmap& image, uint32_t max_image_size) {
+ // size |max_image_size|. Returns the result if it is not empty. Otherwise,
+ // find the smallest image in the array and resize it proportionally to fit
+ // in a box of size |max_image_size|.
+-// Sets |original_image_sizes| to the sizes of |images| before resizing.
++// Sets |original_image_sizes| to the sizes of |images| before resizing. Both
++// output vectors are guaranteed to have the same size.
+ void FilterAndResizeImagesForMaximalSize(
+     const WTF::Vector<SkBitmap>& unfiltered,
+     uint32_t max_image_size,
+@@ -202,6 +203,8 @@ void ImageDownloaderImpl::DidDownloadImage(
+   FilterAndResizeImagesForMaximalSize(images, max_image_size, &result_images,
+                                       &result_original_image_sizes);
+ 
++  DCHECK_EQ(result_images.size(), result_original_image_sizes.size());
++
+   std::move(callback).Run(http_status_code, result_images,
+                           result_original_image_sizes);
+ }
diff --git a/patches/chromium/ignore_renderframehostimpl_detach_for_speculative_rfhs.patch b/patches/chromium/ignore_renderframehostimpl_detach_for_speculative_rfhs.patch
new file mode 100644
index 0000000000000..873e20771aedb
--- /dev/null
+++ b/patches/chromium/ignore_renderframehostimpl_detach_for_speculative_rfhs.patch
@@ -0,0 +1,163 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Daniel Cheng <dcheng@chromium.org>
+Date: Wed, 11 Nov 2020 00:54:41 +0000
+Subject: Ignore RenderFrameHostImpl::Detach() for speculative RFHs.
+
+Currently, this all happens to work by chance, because the speculative
+RFH or the entire FTN happens to be torn down before the browser process
+ever processes a Detach() IPC for a speculative RFH.
+
+However, there are a number of followup CLs that restructure how
+provisional RenderFrames are managed and owned in the renderer process.
+To simplify those CLs, explicitly branch in Detach() based on whether or
+not the RFH is speculative. In the future, additional logic may be added
+to the speculative branch (e.g. cancelling the navigation, if
+appropriate).
+
+(cherry picked from commit cf054220a2e1570a9149220494de8826c2e9d4db)
+
+Bug: 1146709
+Change-Id: I6490a90f7b447422d698676665b52f6f3a6f8ffd
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2524280
+Commit-Queue: Daniel Cheng <dcheng@chromium.org>
+Reviewed-by: Nasko Oskov <nasko@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#825903}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2530189
+Reviewed-by: Adrian Taylor <adetaylor@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1430}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
+index c1d7a3052516c6c8ac5a8e65c9688d04b8edec70..ab54a32a17f29e9b5ea9365e92de563737a1e513 100644
+--- a/content/browser/frame_host/render_frame_host_impl.cc
++++ b/content/browser/frame_host/render_frame_host_impl.cc
+@@ -2625,6 +2625,9 @@ void RenderFrameHostImpl::UpdateRenderProcessHostFramePriorities() {
+ }
+ 
+ void RenderFrameHostImpl::OnDetach() {
++  if (lifecycle_state() == LifecycleState::kSpeculative)
++    return;
++
+   if (!parent_) {
+     bad_message::ReceivedBadMessage(GetProcess(),
+                                     bad_message::RFH_DETACH_MAIN_FRAME);
+diff --git a/content/browser/site_per_process_browsertest.cc b/content/browser/site_per_process_browsertest.cc
+index 7c9902648ab0465f4e0a7b4778b328ad8c1f2fcd..d81076da5ef7701475ef1158b528d02d3992ff0d 100644
+--- a/content/browser/site_per_process_browsertest.cc
++++ b/content/browser/site_per_process_browsertest.cc
+@@ -10333,6 +10333,37 @@ IN_PROC_BROWSER_TEST_P(SitePerProcessBrowserTest,
+   EXPECT_EQ("opener-ping-reply", response);
+ }
+ 
++IN_PROC_BROWSER_TEST_P(SitePerProcessBrowserTest,
++                       DetachSpeculativeRenderFrameHost) {
++  // Commit a page with one iframe.
++  GURL main_url(embedded_test_server()->GetURL(
++      "a.com", "/cross_site_iframe_factory.html?a(a)"));
++  EXPECT_TRUE(NavigateToURL(shell(), main_url));
++
++  // Start a cross-site navigation.
++  GURL cross_site_url(embedded_test_server()->GetURL("b.com", "/title2.html"));
++  TestNavigationManager nav_manager(shell()->web_contents(), cross_site_url);
++  BeginNavigateIframeToURL(web_contents(), "child-0", cross_site_url);
++
++  // Wait for the request, but don't commit it yet. This should create a
++  // speculative RenderFrameHost.
++  ASSERT_TRUE(nav_manager.WaitForRequestStart());
++  FrameTreeNode* root = web_contents()->GetFrameTree()->root();
++  RenderFrameHostImpl* speculative_rfh = root->current_frame_host()
++                                             ->child_at(0)
++                                             ->render_manager()
++                                             ->speculative_frame_host();
++  EXPECT_TRUE(speculative_rfh);
++
++  // Currently, the browser process never handles an explicit Detach() for a
++  // speculative RFH, since the speculative RFH or the entire FTN is always
++  // destroyed before the renderer sends this IPC.
++  speculative_rfh->Detach();
++
++  // Passes if there is no crash.
++}
++
++
+ #if defined(OS_ANDROID)
+ 
+ namespace {
+diff --git a/content/public/test/browser_test_utils.cc b/content/public/test/browser_test_utils.cc
+index cbc62fef825815309f417baee931a6c450500f32..d3fa4eb639f58c6eafe01651e643545897dcabcc 100644
+--- a/content/public/test/browser_test_utils.cc
++++ b/content/public/test/browser_test_utils.cc
+@@ -603,15 +603,21 @@ bool NavigateToURL(WebContents* web_contents,
+ bool NavigateIframeToURL(WebContents* web_contents,
+                          const std::string& iframe_id,
+                          const GURL& url) {
++  TestNavigationObserver load_observer(web_contents);
++  bool result = BeginNavigateIframeToURL(web_contents, iframe_id, url);
++  load_observer.Wait();
++  return result;
++}
++
++bool BeginNavigateIframeToURL(WebContents* web_contents,
++                              const std::string& iframe_id,
++                              const GURL& url) {
+   std::string script = base::StringPrintf(
+       "setTimeout(\""
+       "var iframes = document.getElementById('%s');iframes.src='%s';"
+       "\",0)",
+       iframe_id.c_str(), url.spec().c_str());
+-  TestNavigationObserver load_observer(web_contents);
+-  bool result = ExecuteScript(web_contents, script);
+-  load_observer.Wait();
+-  return result;
++  return ExecuteScript(web_contents, script);
+ }
+ 
+ void NavigateToURLBlockUntilNavigationsComplete(WebContents* web_contents,
+diff --git a/content/public/test/browser_test_utils.h b/content/public/test/browser_test_utils.h
+index 275684ba6cf6b6a9f8e5f5b24951d8fb07969767..bc23592ce9b7eab268465fb0e171e8351aa25549 100644
+--- a/content/public/test/browser_test_utils.h
++++ b/content/public/test/browser_test_utils.h
+@@ -138,6 +138,12 @@ bool NavigateIframeToURL(WebContents* web_contents,
+                          const std::string& iframe_id,
+                          const GURL& url);
+ 
++// Similar to |NavigateIframeToURL()| but returns as soon as the navigation is
++// initiated.
++bool BeginNavigateIframeToURL(WebContents* web_contents,
++                              const std::string& iframe_id,
++                              const GURL& url);
++
+ // Generate a URL for a file path including a query string.
+ GURL GetFileUrlWithQuery(const base::FilePath& path,
+                          const std::string& query_string);
+diff --git a/content/test/data/cross_site_iframe_factory.html b/content/test/data/cross_site_iframe_factory.html
+index 0893a2063585a04520d9bc8f87ee0c1cb726c0d7..78f8126c9cf7f8ae9f2b0d34e17d76ad51784811 100644
+--- a/content/test/data/cross_site_iframe_factory.html
++++ b/content/test/data/cross_site_iframe_factory.html
+@@ -10,12 +10,12 @@ Example usage in a browsertest, explained:
+ When you navigate to the above URL, the outer document (on a.com) will create a
+ single iframe:
+ 
+-  <iframe src="http://b.com:1234/cross_site_iframe_factory.html?b(c(),d())">
++  <iframe id="child-0" src="http://b.com:1234/cross_site_iframe_factory.html?b(c(),d())">
+ 
+ Inside of which, then, are created the two leaf iframes:
+ 
+-  <iframe src="http://c.com:1234/cross_site_iframe_factory.html?c()">
+-  <iframe src="http://d.com:1234/cross_site_iframe_factory.html?d()">
++  <iframe id="child-0" src="http://c.com:1234/cross_site_iframe_factory.html?c()">
++  <iframe id="child-1" src="http://d.com:1234/cross_site_iframe_factory.html?d()">
+ 
+ Add iframe options by enclosing them in '{' and '}' characters after the
+ hostname (multiple options can be separated with commas):
+@@ -24,8 +24,8 @@ hostname (multiple options can be separated with commas):
+ 
+ Will create two iframes:
+ 
+-  <iframe src="http://a.com:1234/cross_site_iframe_factory.html?b()" allowfullscreen>
+-  <iframe src="http://c.com:1234/cross_site_iframe_factory.html?c{sandbox-allow-scripts}(d())" sandbox="allow-scripts">
++  <iframe id="child-0" src="http://a.com:1234/cross_site_iframe_factory.html?b()" allowfullscreen>
++  <iframe id="child-1" src="http://c.com:1234/cross_site_iframe_factory.html?c{sandbox-allow-scripts}(d())" sandbox="allow-scripts">
+ 
+ To specify the site for each iframe, you can use a simple identifier like "a"
+ or "b", and ".com" will be automatically appended. You can also specify a port
diff --git a/patches/chromium/layoutng_fix_an_incorrect_cache-hit_for_line_boxes.patch b/patches/chromium/layoutng_fix_an_incorrect_cache-hit_for_line_boxes.patch
new file mode 100644
index 0000000000000..0d490f8e2b71d
--- /dev/null
+++ b/patches/chromium/layoutng_fix_an_incorrect_cache-hit_for_line_boxes.patch
@@ -0,0 +1,109 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Kent Tamura <tkent@chromium.org>
+Date: Mon, 14 Dec 2020 17:37:14 +0000
+Subject: LayoutNG: Fix an incorrect cache-hit for line boxes
+
+If an IFC contains an item for an orthogonal writing-mode root,
+NGFragmentItems::DirtyLinesFromNeedsLayout() failed to mark it as dirty
+because NeedsLayout flag for the item was already cleared in the
+ComputeMinMaxSizes() step.
+
+This CL avoids this issue by assuming orthogonal writing-mode roots
+dirty regardless of NeedsLayout flag.
+
+(cherry picked from commit 21976a78429ccd8325acb00b41b4120271580bfb)
+
+Bug: 1125870, 1147357
+Change-Id: I603bdd76f9015fbcde46da8e09fb6757b4b0222b
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2544326
+Reviewed-by: Koji Ishii <kojii@chromium.org>
+Commit-Queue: Kent Tamura <tkent@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#828237}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2584928
+Reviewed-by: Kent Tamura <tkent@chromium.org>
+Commit-Queue: Koji Ishii <kojii@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1483}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/third_party/blink/renderer/core/BUILD.gn b/third_party/blink/renderer/core/BUILD.gn
+index cdd49a53f8138572d746d87ba7116880eca850ef..b6915f3501150bc2d4fca79c21fb358d01f9f88e 100644
+--- a/third_party/blink/renderer/core/BUILD.gn
++++ b/third_party/blink/renderer/core/BUILD.gn
+@@ -1235,6 +1235,7 @@ jumbo_source_set("unit_tests") {
+     "layout/ng/inline/ng_bidi_paragraph_test.cc",
+     "layout/ng/inline/ng_caret_position_test.cc",
+     "layout/ng/inline/ng_fragment_item_test.cc",
++    "layout/ng/inline/ng_fragment_items_test.cc",
+     "layout/ng/inline/ng_inline_cursor_test.cc",
+     "layout/ng/inline/ng_inline_fragment_traversal_test.cc",
+     "layout/ng/inline/ng_inline_items_builder_test.cc",
+diff --git a/third_party/blink/renderer/core/layout/ng/inline/ng_fragment_items.cc b/third_party/blink/renderer/core/layout/ng/inline/ng_fragment_items.cc
+index cfe1900729d4dacc5dad8d94f39b8f80114f6104..de2bc38dc0fe41ef16340642a60208e327173fe2 100644
+--- a/third_party/blink/renderer/core/layout/ng/inline/ng_fragment_items.cc
++++ b/third_party/blink/renderer/core/layout/ng/inline/ng_fragment_items.cc
+@@ -249,9 +249,15 @@ void NGFragmentItems::DirtyLinesFromNeedsLayout(
+   // opportunities. Doing this complicates the logic, especially when culled
+   // inline is involved, and common case is to append to large IFC. Choose
+   // simpler logic and faster to check over more reuse opportunities.
++  const auto writing_mode = container->StyleRef().GetWritingMode();
+   for (LayoutObject* child = container->FirstChild(); child;
+        child = child->NextSibling()) {
+-    if (child->NeedsLayout()) {
++    // NeedsLayout is not helpful for an orthogonal writing-mode root because
++    // its NeedsLayout flag is cleared during the ComputeMinMaxSizes() step of
++    // the container.
++    if (child->NeedsLayout() ||
++        !IsParallelWritingMode(writing_mode,
++                               child->StyleRef().GetWritingMode())) {
+       DirtyLinesFromChangedChild(child);
+       return;
+     }
+diff --git a/third_party/blink/renderer/core/layout/ng/inline/ng_fragment_items_test.cc b/third_party/blink/renderer/core/layout/ng/inline/ng_fragment_items_test.cc
+new file mode 100644
+index 0000000000000000000000000000000000000000..0a36ada712c0bbc9afe0edad70dfb68c5028d84e
+--- /dev/null
++++ b/third_party/blink/renderer/core/layout/ng/inline/ng_fragment_items_test.cc
+@@ -0,0 +1,43 @@
++// Copyright 2020 The Chromium Authors. All rights reserved.
++// Use of this source code is governed by a BSD-style license that can be
++// found in the LICENSE file.
++
++#include "testing/gtest/include/gtest/gtest.h"
++#include "third_party/blink/renderer/core/layout/ng/ng_layout_test.h"
++
++namespace blink {
++
++class NGFragmentItemsTest : public NGLayoutTest {};
++
++// crbug.com/1147357
++// DirtyLinesFromNeedsLayout() didn't work well with an orthogonal writing-mode
++// root as a child, and it caused a failure of OOF descendants propagation.
++TEST_F(NGFragmentItemsTest,
++       DirtyLinesFromNeedsLayoutWithOrthogonalWritingMode) {
++  SetBodyInnerHTML(R"HTML(
++<style>
++button {
++  font-size: 100px;
++}
++#span1 {
++  position: absolute;
++}
++code {
++  writing-mode: vertical-rl;
++}
++</style>
++<rt id="rt1"><span id="span1"></span></rt>
++<button>
++<code><ruby id="ruby1"></ruby></code>
++b AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
++</button>)HTML");
++  RunDocumentLifecycle();
++
++  GetDocument().getElementById("ruby1")->appendChild(
++      GetDocument().getElementById("rt1"));
++  RunDocumentLifecycle();
++
++  EXPECT_TRUE(GetLayoutObjectByElementId("span1")->EverHadLayout());
++}
++
++}  // namespace blink
diff --git a/patches/chromium/m86-lts_add_null_pointer_check_in_renderwidgethostinputeventrouter.patch b/patches/chromium/m86-lts_add_null_pointer_check_in_renderwidgethostinputeventrouter.patch
new file mode 100644
index 0000000000000..2ec494c9b53fc
--- /dev/null
+++ b/patches/chromium/m86-lts_add_null_pointer_check_in_renderwidgethostinputeventrouter.patch
@@ -0,0 +1,36 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Lan Wei <lanwei@chromium.org>
+Date: Tue, 20 Apr 2021 17:08:53 +0000
+Subject: M86-LTS: Add null pointer check in RenderWidgetHostInputEventRouter
+
+We have some crashes in RenderWidgetHostInputEventRouter class, we are
+adding some null pointer check in this class to avoid the crash.
+
+(cherry picked from commit 5f47666b79ac7ded20e1c7657037498561bd3352)
+
+Bug: 1155297
+Change-Id: I3b63d5748523ae2ce8ab469832adfc75d586e411
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2818680
+Reviewed-by: Charlie Reis <creis@chromium.org>
+Commit-Queue: Lan Wei <lanwei@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#871108}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2838329
+Reviewed-by: Lan Wei <lanwei@chromium.org>
+Commit-Queue: Achuith Bhandarkar <achuith@chromium.org>
+Owners-Override: Achuith Bhandarkar <achuith@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1617}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/content/browser/renderer_host/render_widget_host_input_event_router.cc b/content/browser/renderer_host/render_widget_host_input_event_router.cc
+index f45da60a8f8cdeb6406e123554c05c4f399b0433..d88d28c2d4b09a00a9a42b59acad898d6516c158 100644
+--- a/content/browser/renderer_host/render_widget_host_input_event_router.cc
++++ b/content/browser/renderer_host/render_widget_host_input_event_router.cc
+@@ -1949,7 +1949,7 @@ void RenderWidgetHostInputEventRouter::OnAggregatedHitTestRegionListUpdated(
+     const std::vector<viz::AggregatedHitTestRegion>& hit_test_data) {
+   for (auto& region : hit_test_data) {
+     auto iter = owner_map_.find(region.frame_sink_id);
+-    if (iter != owner_map_.end())
++    if (iter != owner_map_.end() && iter->second)
+       iter->second->NotifyHitTestRegionUpdated(region);
+   }
+ }
diff --git a/patches/chromium/m86-lts_add_weak_pointer_to_rwhier_framesinkidownermap_and.patch b/patches/chromium/m86-lts_add_weak_pointer_to_rwhier_framesinkidownermap_and.patch
new file mode 100644
index 0000000000000..b67de30288865
--- /dev/null
+++ b/patches/chromium/m86-lts_add_weak_pointer_to_rwhier_framesinkidownermap_and.patch
@@ -0,0 +1,168 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Lan Wei <lanwei@chromium.org>
+Date: Tue, 20 Apr 2021 16:32:33 +0000
+Subject: M86-LTS: Add weak pointer to RWHIER::FrameSinkIdOwnerMap and
+ RWHIER::TargetMap
+
+In RWHIER::FrameSinkIdOwnerMap and RWHIER::TargetMap, we change raw
+pointer of RenderWidgetHostViewBase to weak pointer, such as
+using FrameSinkIdOwnerMap = std::unordered_map<viz::FrameSinkId,
+                                base::WeakPtr<RenderWidgetHostViewBase>,
+                                viz::FrameSinkIdHash>;
+using TargetMap = std::map<uint32_t,
+                           base::WeakPtr<RenderWidgetHostViewBase>>;
+
+This CL should fix the crash of stale pointer.
+
+(cherry picked from commit 3e3e3cf7036d7e33a4d68b8416ae25730f9eee1d)
+
+Bug: 1155297
+Change-Id: I5b3270882ef06ae48c86bd460261723c7113953d
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2792344
+Reviewed-by: James MacLean <wjmaclean@chromium.org>
+Reviewed-by: Aaron Colwell <acolwell@chromium.org>
+Commit-Queue: Lan Wei <lanwei@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#870013}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2838587
+Owners-Override: Achuith Bhandarkar <achuith@chromium.org>
+Auto-Submit: Achuith Bhandarkar <achuith@chromium.org>
+Reviewed-by: Lan Wei <lanwei@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1616}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/content/browser/renderer_host/render_widget_host_input_event_router.cc b/content/browser/renderer_host/render_widget_host_input_event_router.cc
+index d88d28c2d4b09a00a9a42b59acad898d6516c158..0a19dfd63474bcc7da579bee850f92f642d525c7 100644
+--- a/content/browser/renderer_host/render_widget_host_input_event_router.cc
++++ b/content/browser/renderer_host/render_widget_host_input_event_router.cc
+@@ -345,7 +345,7 @@ void RenderWidgetHostInputEventRouter::OnRenderWidgetHostViewBaseDestroyed(
+ 
+   // Remove this view from the owner_map.
+   for (auto entry : owner_map_) {
+-    if (entry.second == view) {
++    if (entry.second.get() == view) {
+       owner_map_.erase(entry.first);
+       // There will only be one instance of a particular view in the map.
+       break;
+@@ -368,7 +368,7 @@ void RenderWidgetHostInputEventRouter::OnRenderWidgetHostViewBaseDestroyed(
+   // replace it with nullptr so that we maintain the 1:1 correspondence between
+   // map entries and the touch sequences that underly them.
+   for (auto it : touchscreen_gesture_target_map_) {
+-    if (it.second == view)
++    if (it.second.get() == view)
+       it.second = nullptr;
+   }
+ 
+@@ -417,8 +417,10 @@ void RenderWidgetHostInputEventRouter::OnRenderWidgetHostViewBaseDestroyed(
+ void RenderWidgetHostInputEventRouter::ClearAllObserverRegistrations() {
+   // Since we're shutting down, it's safe to call RenderWidgetHostViewBase::
+   // RemoveObserver() directly here.
+-  for (auto entry : owner_map_)
+-    entry.second->RemoveObserver(this);
++  for (auto entry : owner_map_) {
++    if (entry.second)
++      entry.second->RemoveObserver(this);
++  }
+   owner_map_.clear();
+   viz::HostFrameSinkManager* manager = GetHostFrameSinkManager();
+   if (manager)
+@@ -840,7 +842,7 @@ void RenderWidgetHostInputEventRouter::DispatchTouchEvent(
+                touch_event.unique_touch_event_id) ==
+            touchscreen_gesture_target_map_.end());
+     touchscreen_gesture_target_map_[touch_event.unique_touch_event_id] =
+-        touch_target_;
++        touch_target_->GetWeakPtr();
+   } else if (touch_event.GetType() == blink::WebInputEvent::Type::kTouchStart) {
+     active_touches_ += CountChangedTouchPoints(touch_event);
+   }
+@@ -1352,7 +1354,7 @@ void RenderWidgetHostInputEventRouter::AddFrameSinkIdOwner(
+   // We want to be notified if the owner is destroyed so we can remove it from
+   // our map.
+   owner->AddObserver(this);
+-  owner_map_.insert(std::make_pair(id, owner));
++  owner_map_.insert(std::make_pair(id, owner->GetWeakPtr()));
+ }
+ 
+ void RenderWidgetHostInputEventRouter::RemoveFrameSinkIdOwner(
+@@ -1364,7 +1366,8 @@ void RenderWidgetHostInputEventRouter::RemoveFrameSinkIdOwner(
+     // stale values if the view destructs and isn't an observer anymore.
+     // Note: the view the iterator points at will be deleted in the following
+     // call, and shouldn't be used after this point.
+-    OnRenderWidgetHostViewBaseDestroyed(it_to_remove->second);
++    if (it_to_remove->second)
++      OnRenderWidgetHostViewBaseDestroyed(it_to_remove->second.get());
+   }
+ }
+ 
+@@ -1415,7 +1418,7 @@ RenderWidgetHostInputEventRouter::FindTouchscreenGestureEventTarget(
+ bool RenderWidgetHostInputEventRouter::IsViewInMap(
+     const RenderWidgetHostViewBase* view) const {
+   DCHECK(!is_registered(view->GetFrameSinkId()) ||
+-         owner_map_.find(view->GetFrameSinkId())->second == view);
++         owner_map_.find(view->GetFrameSinkId())->second.get() == view);
+   return is_registered(view->GetFrameSinkId());
+ }
+ 
+@@ -1552,7 +1555,7 @@ void RenderWidgetHostInputEventRouter::DispatchTouchscreenGestureEvent(
+     target = result.view;
+     fallback_target_location = transformed_point;
+   } else if (is_gesture_start) {
+-    target = gesture_target_it->second;
++    target = gesture_target_it->second.get();
+     touchscreen_gesture_target_map_.erase(gesture_target_it);
+ 
+     // Abort any scroll bubbling in progress to avoid double entry.
+@@ -1738,7 +1741,7 @@ RenderWidgetHostInputEventRouter::FindViewFromFrameSinkId(
+   // If the point hit a Surface whose namspace is no longer in the map, then
+   // it likely means the RenderWidgetHostView has been destroyed but its
+   // parent frame has not sent a new compositor frame since that happened.
+-  return iter == owner_map_.end() ? nullptr : iter->second;
++  return iter == owner_map_.end() ? nullptr : iter->second.get();
+ }
+ 
+ bool RenderWidgetHostInputEventRouter::ShouldContinueHitTesting(
+@@ -1758,8 +1761,10 @@ bool RenderWidgetHostInputEventRouter::ShouldContinueHitTesting(
+ std::vector<RenderWidgetHostView*>
+ RenderWidgetHostInputEventRouter::GetRenderWidgetHostViewsForTests() const {
+   std::vector<RenderWidgetHostView*> hosts;
+-  for (auto entry : owner_map_)
+-    hosts.push_back(entry.second);
++  for (auto entry : owner_map_) {
++    DCHECK(entry.second);
++    hosts.push_back(entry.second.get());
++  }
+ 
+   return hosts;
+ }
+@@ -1928,8 +1933,10 @@ void RenderWidgetHostInputEventRouter::SetCursor(const WebCursor& cursor) {
+   last_device_scale_factor_ =
+       last_mouse_move_root_view_->current_device_scale_factor();
+   if (auto* cursor_manager = last_mouse_move_root_view_->GetCursorManager()) {
+-    for (auto it : owner_map_)
+-      cursor_manager->UpdateCursor(it.second, cursor);
++    for (auto it : owner_map_) {
++      if (it.second)
++        cursor_manager->UpdateCursor(it.second.get(), cursor);
++    }
+   }
+ }
+ 
+diff --git a/content/browser/renderer_host/render_widget_host_input_event_router.h b/content/browser/renderer_host/render_widget_host_input_event_router.h
+index 42629b133b883865bebfa27f5d29eb5e2d153d0b..c4ce54a5a6beb509d6242ee0e5ebdf4c88f01251 100644
+--- a/content/browser/renderer_host/render_widget_host_input_event_router.h
++++ b/content/browser/renderer_host/render_widget_host_input_event_router.h
+@@ -195,10 +195,11 @@ class CONTENT_EXPORT RenderWidgetHostInputEventRouter
+   FRIEND_TEST_ALL_PREFIXES(BrowserSideFlingBrowserTest,
+                            InertialGSUBubblingStopsWhenParentCannotScroll);
+ 
+-  using FrameSinkIdOwnerMap = std::unordered_map<viz::FrameSinkId,
+-                                                 RenderWidgetHostViewBase*,
+-                                                 viz::FrameSinkIdHash>;
+-  using TargetMap = std::map<uint32_t, RenderWidgetHostViewBase*>;
++  using FrameSinkIdOwnerMap =
++      std::unordered_map<viz::FrameSinkId,
++                         base::WeakPtr<RenderWidgetHostViewBase>,
++                         viz::FrameSinkIdHash>;
++  using TargetMap = std::map<uint32_t, base::WeakPtr<RenderWidgetHostViewBase>>;
+ 
+   void ClearAllObserverRegistrations();
+   RenderWidgetTargetResult FindViewAtLocation(
diff --git a/patches/chromium/media_feeds_disable_media_feeds_and_related_features.patch b/patches/chromium/media_feeds_disable_media_feeds_and_related_features.patch
new file mode 100644
index 0000000000000..639577b439c28
--- /dev/null
+++ b/patches/chromium/media_feeds_disable_media_feeds_and_related_features.patch
@@ -0,0 +1,30 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Andrey Belenko <andrey.belenko@gmail.com>
+Date: Wed, 19 May 2021 14:17:10 +0200
+Subject: Media Feeds: Disable Media Feeds and related features
+
+Media Feeds is deleted in M91 and later and is unused in previous
+versions as well. There is a security issue with Media Feeds though, so
+we'd like to force it to be disabled in previous versions, so this CL
+turns it off for M90.
+
+(cherry picked from commit b064a73431541e520d273c227e762983c2f177b7)
+
+Bug: 1195340
+Change-Id: I29e18be2abe4c1b4560d6324af3b6da93a97d947
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2847504
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2883741
+
+diff --git a/media/base/media_switches.cc b/media/base/media_switches.cc
+index 162d2e2991aa34c8fc6acb14f8cbad5af27b12b9..e7b5ea2103bdca2faebac1d8d0a86b42418eed6b 100644
+--- a/media/base/media_switches.cc
++++ b/media/base/media_switches.cc
+@@ -676,7 +676,7 @@ const base::Feature kMediaFeedsBackgroundFetching{
+ 
+ // Enables checking Media Feeds against safe search to prevent adult content.
+ const base::Feature kMediaFeedsSafeSearch{"MediaFeedsSafeSearch",
+-                                          base::FEATURE_ENABLED_BY_DEFAULT};
++                                          base::FEATURE_DISABLED_BY_DEFAULT};
+ 
+ // Send events to devtools rather than to chrome://media-internals
+ const base::Feature kMediaInspectorLogging{"MediaInspectorLogging",
diff --git a/patches/chromium/mediacapabilities_use_threadsafe_static_wtf_string.patch b/patches/chromium/mediacapabilities_use_threadsafe_static_wtf_string.patch
new file mode 100644
index 0000000000000..4c8ad01e913bd
--- /dev/null
+++ b/patches/chromium/mediacapabilities_use_threadsafe_static_wtf_string.patch
@@ -0,0 +1,174 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Chris Cunningham <chcunningham@chromium.org>
+Date: Tue, 5 Jan 2021 21:23:21 +0000
+Subject: MediaCapabilities: Use threadsafe static wtf::String
+
+This replaces DEFINE_THREAD_SAFE_STATIC_LOCAL(const String, ...).
+StringImpl ref counting (behind that macro) is not currently threadsafe.
+
+(cherry picked from commit f9add3b8e53c440129f7be4a181a22c440e856bc)
+
+Bug: 1160534
+Change-Id: I70f4aa796aaefabbee36db4fcdf0fbf0defe4959
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2606399
+Commit-Queue: Chrome Cunningham <chcunningham@chromium.org>
+Reviewed-by: Jeremy Roman <jbroman@chromium.org>
+Auto-Submit: Chrome Cunningham <chcunningham@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#839863}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2611646
+Reviewed-by: Chrome Cunningham <chcunningham@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4324@{#1460}
+Cr-Branched-From: c73b5a651d37a6c4d0b8e3262cc4015a5579c6c8-refs/heads/master@{#827102}
+
+diff --git a/third_party/blink/renderer/modules/BUILD.gn b/third_party/blink/renderer/modules/BUILD.gn
+index 0f08d60394f526b883a91c3994bea5dbe6a7d3e8..d38dc0f47cc186cc5bf45704a668438450797a8c 100644
+--- a/third_party/blink/renderer/modules/BUILD.gn
++++ b/third_party/blink/renderer/modules/BUILD.gn
+@@ -21,12 +21,18 @@ config("modules_implementation") {
+   defines = [ "BLINK_MODULES_IMPLEMENTATION=1" ]
+ }
+ 
+-make_names("module_names") {
++make_names("indexed_db_names") {
+   in_files = [ "indexeddb/indexed_db_names.json5" ]
+   output_dir = blink_modules_output_dir
+   deps = []  # Don't use default deps (otherwise it will be circular).
+ }
+ 
++make_names("media_capabilities_names") {
++  in_files = [ "media_capabilities/media_capabilities_names.json5" ]
++  output_dir = blink_modules_output_dir
++  deps = []  # Don't use default deps (otherwise it will be circular).
++}
++
+ jumbo_component("modules") {
+   output_name = "blink_modules"
+ 
+@@ -42,8 +48,9 @@ jumbo_component("modules") {
+     "modules_initializer.h",
+   ]
+ 
+-  # Compile sources generated by module_names script.
+-  sources += get_target_outputs(":module_names")
++  # Compile sources generated by make_names script.
++  sources += get_target_outputs(":indexed_db_names")
++  sources += get_target_outputs(":media_capabilities_names")
+ 
+   sources += bindings_modules_v8_files
+   sources += rebase_path(
+@@ -165,8 +172,9 @@ jumbo_component("modules") {
+   }
+ 
+   deps = [
++    ":indexed_db_names",
+     ":make_modules_generated",
+-    ":module_names",
++    ":media_capabilities_names",
+     "//jingle:webrtc_glue",
+     "//net:net",
+     "//third_party/blink/renderer/bindings/modules:generated",
+@@ -249,7 +257,8 @@ jumbo_source_set("modules_testing") {
+ 
+ group("make_modules_generated") {
+   public_deps = [
+-    ":module_names",
++    ":indexed_db_names",
++    ":media_capabilities_names",
+     "//third_party/blink/renderer/bindings/modules:bindings_modules_generated",
+     "//third_party/blink/renderer/core:core_event_interfaces",
+   ]
+diff --git a/third_party/blink/renderer/modules/media_capabilities/DEPS b/third_party/blink/renderer/modules/media_capabilities/DEPS
+index 3b8d2749b4f486c4b0b207d4e20f966b5e573e07..1a5a3e9e3b6a031c4752cd92cf87426cae72f1d2 100644
+--- a/third_party/blink/renderer/modules/media_capabilities/DEPS
++++ b/third_party/blink/renderer/modules/media_capabilities/DEPS
+@@ -12,6 +12,7 @@ include_rules = [
+     "-third_party/blink/renderer/modules",
+     "+third_party/blink/renderer/modules/encryptedmedia",
+     "+third_party/blink/renderer/modules/media_capabilities",
++    "+third_party/blink/renderer/modules/media_capabilities_names.h",
+     "+third_party/blink/renderer/modules/mediarecorder/media_recorder_handler.h",
+     "+third_party/blink/renderer/modules/modules_export.h",
+ ]
+diff --git a/third_party/blink/renderer/modules/media_capabilities/media_capabilities.cc b/third_party/blink/renderer/modules/media_capabilities/media_capabilities.cc
+index d571e60943092c746a7f4136b9e626128839abfc..9515ae2f71a415bb81a7e786c9d7fb2b623bd852 100644
+--- a/third_party/blink/renderer/modules/media_capabilities/media_capabilities.cc
++++ b/third_party/blink/renderer/modules/media_capabilities/media_capabilities.cc
+@@ -53,6 +53,7 @@
+ #include "third_party/blink/renderer/modules/encryptedmedia/media_key_system_access.h"
+ #include "third_party/blink/renderer/modules/encryptedmedia/media_key_system_access_initializer_base.h"
+ #include "third_party/blink/renderer/modules/encryptedmedia/media_keys_controller.h"
++#include "third_party/blink/renderer/modules/media_capabilities_names.h"
+ #include "third_party/blink/renderer/modules/mediarecorder/media_recorder_handler.h"
+ #include "third_party/blink/renderer/platform/bindings/exception_state.h"
+ #include "third_party/blink/renderer/platform/bindings/script_state.h"
+@@ -296,9 +297,9 @@ WebAudioConfiguration ToWebAudioConfiguration(
+   DCHECK(parsed_content_type.IsValid());
+   DCHECK(!parsed_content_type.GetParameters().HasDuplicatedNames());
+ 
+-  DEFINE_THREAD_SAFE_STATIC_LOCAL(const String, codecs, ("codecs"));
+   web_configuration.mime_type = parsed_content_type.MimeType().LowerASCII();
+-  web_configuration.codec = parsed_content_type.ParameterValueForName(codecs);
++  web_configuration.codec = parsed_content_type.ParameterValueForName(
++      media_capabilities_names::kCodecs);
+ 
+   // |channels| is optional and will be set to a null WebString if not present.
+   web_configuration.channels = configuration->hasChannels()
+@@ -324,9 +325,9 @@ WebVideoConfiguration ToWebVideoConfiguration(
+   DCHECK(parsed_content_type.IsValid());
+   DCHECK(!parsed_content_type.GetParameters().HasDuplicatedNames());
+ 
+-  DEFINE_THREAD_SAFE_STATIC_LOCAL(const String, codecs, ("codecs"));
+   web_configuration.mime_type = parsed_content_type.MimeType().LowerASCII();
+-  web_configuration.codec = parsed_content_type.ParameterValueForName(codecs);
++  web_configuration.codec = parsed_content_type.ParameterValueForName(
++      media_capabilities_names::kCodecs);
+ 
+   DCHECK(configuration->hasWidth());
+   web_configuration.width = configuration->width();
+@@ -586,9 +587,9 @@ bool ParseContentType(const String& content_type,
+     return false;
+   }
+ 
+-  DEFINE_THREAD_SAFE_STATIC_LOCAL(const String, codecs, ("codecs"));
+   *mime_type = parsed_content_type.MimeType().LowerASCII();
+-  *codec = parsed_content_type.ParameterValueForName(codecs);
++  *codec = parsed_content_type.ParameterValueForName(
++      media_capabilities_names::kCodecs);
+   return true;
+ }
+ 
+diff --git a/third_party/blink/renderer/modules/media_capabilities/media_capabilities_names.json5 b/third_party/blink/renderer/modules/media_capabilities/media_capabilities_names.json5
+new file mode 100644
+index 0000000000000000000000000000000000000000..01f9a0f705da3fad7708cccbd22c9a8c1789ff0c
+--- /dev/null
++++ b/third_party/blink/renderer/modules/media_capabilities/media_capabilities_names.json5
+@@ -0,0 +1,9 @@
++{
++  metadata: {
++    namespace: "media_capabilities_names",
++  },
++
++  data: [
++    "codecs",
++  ],
++}
+diff --git a/third_party/blink/renderer/modules/modules_initializer.cc b/third_party/blink/renderer/modules/modules_initializer.cc
+index df76ac04d4c64697cf5979609a55372b025adadb..5b830fd8c312bdbefe8a52b2e896b194aedb63c6 100644
+--- a/third_party/blink/renderer/modules/modules_initializer.cc
++++ b/third_party/blink/renderer/modules/modules_initializer.cc
+@@ -62,6 +62,7 @@
+ #include "third_party/blink/renderer/modules/launch/file_handling_expiry_impl.h"
+ #include "third_party/blink/renderer/modules/launch/web_launch_service_impl.h"
+ #include "third_party/blink/renderer/modules/manifest/manifest_manager.h"
++#include "third_party/blink/renderer/modules/media_capabilities_names.h"
+ #include "third_party/blink/renderer/modules/media_controls/media_controls_impl.h"
+ #include "third_party/blink/renderer/modules/mediastream/user_media_client.h"
+ #include "third_party/blink/renderer/modules/mediastream/user_media_controller.h"
+@@ -117,6 +118,7 @@ void ModulesInitializer::Initialize() {
+   Document::RegisterEventFactory(EventModulesFactory::Create());
+   ModuleBindingsInitializer::Init();
+   indexed_db_names::Init();
++  media_capabilities_names::Init();
+   AXObjectCache::Init(AXObjectCacheImpl::Create);
+   DraggedIsolatedFileSystem::Init(
+       DraggedIsolatedFileSystemImpl::PrepareForDataObject);
diff --git a/patches/chromium/mediarecorder_tolerate_non-gmb_nv12_frames_for_h264.patch b/patches/chromium/mediarecorder_tolerate_non-gmb_nv12_frames_for_h264.patch
new file mode 100644
index 0000000000000..42177d83ebc78
--- /dev/null
+++ b/patches/chromium/mediarecorder_tolerate_non-gmb_nv12_frames_for_h264.patch
@@ -0,0 +1,152 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Markus Handell <handellm@google.com>
+Date: Tue, 23 Feb 2021 18:45:55 +0000
+Subject: MediaRecorder: tolerate non-GMB NV12 frames for H264.
+
+The VPX video track recorders were updated to tolerate non-GMB NV12
+input in crrev/c/2425748, but the H264 encoder was left neglected,
+which hurts Mac users that have disabled hardware acceleration. This
+change adds that support to it.
+
+[TBR landing because mcasas@chromium.org is OOO]
+
+TBR=mcasas@chromium.org
+(cherry picked from commit de865890bf6a12c74ae9943ede6132d25c7a33dd)
+
+Bug: 1177593
+Change-Id: I608c76b1de8261dcc44463fe896e3b63d5fd329e
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2694407
+Reviewed-by: ccameron <ccameron@chromium.org>
+Reviewed-by: Evan Shrubsole <eshr@google.com>
+Reviewed-by: Miguel Casas <mcasas@chromium.org>
+Commit-Queue: Markus Handell <handellm@google.com>
+Cr-Original-Commit-Position: refs/heads/master@{#854709}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2715222
+Cr-Commit-Position: refs/branch-heads/4389@{#1320}
+Cr-Branched-From: 9251c5db2b6d5a59fe4eac7aafa5fed37c139bb7-refs/heads/master@{#843830}
+
+diff --git a/media/base/video_util.cc b/media/base/video_util.cc
+index 3daa1cb27d5705d56d0075e82a9ecd0bfb86c366..d5a0f1b578e22822089d704fcd7b98cbb26bb405 100644
+--- a/media/base/video_util.cc
++++ b/media/base/video_util.cc
+@@ -13,6 +13,7 @@
+ #include "base/numerics/safe_math.h"
+ #include "media/base/video_frame.h"
+ #include "third_party/libyuv/include/libyuv.h"
++#include "ui/gfx/gpu_memory_buffer.h"
+ 
+ namespace media {
+ 
+@@ -424,6 +425,38 @@ void CopyRGBToVideoFrame(const uint8_t* source,
+                      region_in_frame.width(), region_in_frame.height());
+ }
+ 
++scoped_refptr<VideoFrame> ConvertToMemoryMappedFrame(
++    scoped_refptr<VideoFrame> video_frame) {
++  DCHECK(video_frame);
++  DCHECK(video_frame->HasGpuMemoryBuffer());
++  auto* gmb = video_frame->GetGpuMemoryBuffer();
++  if (!gmb->Map())
++    return nullptr;
++  const size_t num_planes = VideoFrame::NumPlanes(video_frame->format());
++  uint8_t* plane_addrs[VideoFrame::kMaxPlanes] = {};
++  for (size_t i = 0; i < num_planes; i++)
++    plane_addrs[i] = static_cast<uint8_t*>(gmb->memory(i));
++  auto mapped_frame = VideoFrame::WrapExternalYuvDataWithLayout(
++      video_frame->layout(), video_frame->visible_rect(),
++      video_frame->natural_size(), plane_addrs[0], plane_addrs[1],
++      plane_addrs[2], video_frame->timestamp());
++  if (!mapped_frame) {
++    gmb->Unmap();
++    return nullptr;
++  }
++  mapped_frame->set_color_space(video_frame->ColorSpace());
++  mapped_frame->metadata()->MergeMetadataFrom(video_frame->metadata());
++  // Pass |video_frame| so that it outlives |mapped_frame| and the mapped buffer
++  // is unmapped on destruction.
++  mapped_frame->AddDestructionObserver(base::BindOnce(
++      [](scoped_refptr<VideoFrame> frame) {
++        DCHECK(frame->HasGpuMemoryBuffer());
++        frame->GetGpuMemoryBuffer()->Unmap();
++      },
++      std::move(video_frame)));
++  return mapped_frame;
++}
++
+ scoped_refptr<VideoFrame> WrapAsI420VideoFrame(
+     scoped_refptr<VideoFrame> frame) {
+   DCHECK_EQ(VideoFrame::STORAGE_OWNED_MEMORY, frame->storage_type());
+diff --git a/media/base/video_util.h b/media/base/video_util.h
+index 42e060a25b711fca8bba3cef8ade9bbaa2092c55..2681163c55618ae8738d91987bb46a4e8bcc541b 100644
+--- a/media/base/video_util.h
++++ b/media/base/video_util.h
+@@ -134,6 +134,12 @@ MEDIA_EXPORT gfx::Size GetRectSizeFromOrigin(const gfx::Rect& rect);
+ MEDIA_EXPORT gfx::Size PadToMatchAspectRatio(const gfx::Size& size,
+                                              const gfx::Size& target);
+ 
++// A helper function to map GpuMemoryBuffer-based VideoFrame. This function
++// maps the given GpuMemoryBuffer of |frame| as-is without converting pixel
++// format. The returned VideoFrame owns the |frame|.
++MEDIA_EXPORT scoped_refptr<VideoFrame> ConvertToMemoryMappedFrame(
++    scoped_refptr<VideoFrame> frame);
++
+ // Copy an RGB bitmap into the specified |region_in_frame| of a YUV video frame.
+ // Fills the regions outside |region_in_frame| with black.
+ MEDIA_EXPORT void CopyRGBToVideoFrame(const uint8_t* source,
+diff --git a/third_party/blink/renderer/modules/mediarecorder/h264_encoder.cc b/third_party/blink/renderer/modules/mediarecorder/h264_encoder.cc
+index 401e696e886f68fc4a9bb9ac0614959f0a8673a8..c323faab804ad421b1c8f8d7789222304c4d44e6 100644
+--- a/third_party/blink/renderer/modules/mediarecorder/h264_encoder.cc
++++ b/third_party/blink/renderer/modules/mediarecorder/h264_encoder.cc
+@@ -54,9 +54,13 @@ void H264Encoder::EncodeOnEncodingTaskRunner(
+     base::TimeTicks capture_timestamp) {
+   TRACE_EVENT0("media", "H264Encoder::EncodeOnEncodingTaskRunner");
+   DCHECK(encoding_task_runner_->BelongsToCurrentThread());
++  DCHECK(frame->format() == media::VideoPixelFormat::PIXEL_FORMAT_NV12 ||
++         frame->format() == media::VideoPixelFormat::PIXEL_FORMAT_I420 ||
++         frame->format() == media::VideoPixelFormat::PIXEL_FORMAT_I420A);
+ 
+-  if (frame->storage_type() == media::VideoFrame::STORAGE_GPU_MEMORY_BUFFER)
++  if (frame->format() == media::PIXEL_FORMAT_NV12)
+     frame = ConvertToI420ForSoftwareEncoder(frame);
++  DCHECK(frame->IsMappable());
+ 
+   const gfx::Size frame_size = frame->visible_rect().size();
+   if (!openh264_encoder_ || configured_size_ != frame_size) {
+diff --git a/third_party/blink/renderer/modules/mediarecorder/video_track_recorder.cc b/third_party/blink/renderer/modules/mediarecorder/video_track_recorder.cc
+index 0397c605efbb2a669e0235898e1b3029e3b4f0e8..7a7683092919b3712b2c09a86b06fd9c724f8aac 100644
+--- a/third_party/blink/renderer/modules/mediarecorder/video_track_recorder.cc
++++ b/third_party/blink/renderer/modules/mediarecorder/video_track_recorder.cc
+@@ -415,20 +415,17 @@ bool VideoTrackRecorderImpl::Encoder::CanEncodeAlphaChannel() {
+ scoped_refptr<media::VideoFrame>
+ VideoTrackRecorderImpl::Encoder::ConvertToI420ForSoftwareEncoder(
+     scoped_refptr<media::VideoFrame> frame) {
+-  DCHECK_EQ(frame->storage_type(),
+-            media::VideoFrame::STORAGE_GPU_MEMORY_BUFFER);
+-  // NV12 is currently the only supported pixel format for GpuMemoryBuffer.
+   DCHECK_EQ(frame->format(), media::VideoPixelFormat::PIXEL_FORMAT_NV12);
+ 
+-  auto* gmb = frame->GetGpuMemoryBuffer();
+-  if (!gmb->Map())
+-    return frame;
++  if (frame->GetGpuMemoryBuffer())
++    frame = media::ConvertToMemoryMappedFrame(frame);
++
+   scoped_refptr<media::VideoFrame> i420_frame = media::VideoFrame::CreateFrame(
+       media::VideoPixelFormat::PIXEL_FORMAT_I420, frame->coded_size(),
+       frame->visible_rect(), frame->natural_size(), frame->timestamp());
+   auto ret = libyuv::NV12ToI420(
+-      static_cast<const uint8_t*>(gmb->memory(0)), gmb->stride(0),
+-      static_cast<const uint8_t*>(gmb->memory(1)), gmb->stride(1),
++      static_cast<const uint8_t*>(frame->data(0)), frame->stride(0),
++      static_cast<const uint8_t*>(frame->data(1)), frame->stride(1),
+       i420_frame->data(media::VideoFrame::kYPlane),
+       i420_frame->stride(media::VideoFrame::kYPlane),
+       i420_frame->data(media::VideoFrame::kUPlane),
+@@ -436,7 +433,6 @@ VideoTrackRecorderImpl::Encoder::ConvertToI420ForSoftwareEncoder(
+       i420_frame->data(media::VideoFrame::kVPlane),
+       i420_frame->stride(media::VideoFrame::kVPlane),
+       frame->coded_size().width(), frame->coded_size().height());
+-  gmb->Unmap();
+   if (ret)
+     return frame;
+   return i420_frame;
diff --git a/patches/chromium/merge_m86_ensure_that_buffers_used_by_imagedecoder_haven_t_been.patch b/patches/chromium/merge_m86_ensure_that_buffers_used_by_imagedecoder_haven_t_been.patch
new file mode 100644
index 0000000000000..18daf56f897d4
--- /dev/null
+++ b/patches/chromium/merge_m86_ensure_that_buffers_used_by_imagedecoder_haven_t_been.patch
@@ -0,0 +1,179 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Dale Curtis <dalecurtis@chromium.org>
+Date: Fri, 13 Nov 2020 21:06:58 +0000
+Subject: Merge M86: "Ensure that buffers used by ImageDecoder haven't been
+ neutered."
+
+Since JavaScript may detach the underlying buffers, we need to check
+to ensure they're still valid before using them for decoding.
+
+TBR=sandersd
+
+(cherry picked from commit fa93fba6a28d384b0a0cddd63e85eb10cb97bb53)
+
+Test: Updated unittests. Manual test case breaks.
+Change-Id: Iefe5f8adf619cd6afdfedcb08a13c2996bfe0d32
+Fixed: 1146761
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2527542
+Commit-Queue: Dale Curtis <dalecurtis@chromium.org>
+Auto-Submit: Dale Curtis <dalecurtis@chromium.org>
+Reviewed-by: Dan Sanders <sandersd@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#825615}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2537781
+Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1453}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/third_party/blink/renderer/modules/webcodecs/image_decoder_external.cc b/third_party/blink/renderer/modules/webcodecs/image_decoder_external.cc
+index e42ceaf37038b58e53d11bfb63b7a27aa414a87b..780fdbef3afb9cca322002f736fc3d9b87f834b3 100644
+--- a/third_party/blink/renderer/modules/webcodecs/image_decoder_external.cc
++++ b/third_party/blink/renderer/modules/webcodecs/image_decoder_external.cc
+@@ -99,9 +99,8 @@ ImageDecoderExternal::ImageDecoderExternal(ScriptState* script_state,
+     return;
+   }
+ 
+-  // TODO: Data is owned by the caller who may be free to manipulate it. We will
+-  // probably need to make a copy to our own internal data or neuter the buffers
+-  // as seen by JS.
++  // Since data is owned by the caller who may be free to manipulate it, we must
++  // check HasValidEncodedData() before attempting to access |decoder_|.
+   segment_reader_ = SegmentReader::CreateFromSkData(
+       SkData::MakeWithoutCopy(buffer.Data(), buffer.ByteLengthAsSizeT()));
+   if (!segment_reader_) {
+@@ -206,6 +205,7 @@ void ImageDecoderExternal::Trace(Visitor* visitor) const {
+ 
+ void ImageDecoderExternal::CreateImageDecoder() {
+   DCHECK(!decoder_);
++  DCHECK(HasValidEncodedData());
+ 
+   // TODO: We should probably call ImageDecoder::SetMemoryAllocator() so that
+   // we can recycle frame buffers for decoded images.
+@@ -260,6 +260,13 @@ void ImageDecoderExternal::MaybeSatisfyPendingDecodes() {
+       continue;
+     }
+ 
++    if (!HasValidEncodedData()) {
++      request->resolver->Reject(MakeGarbageCollected<DOMException>(
++          DOMExceptionCode::kInvalidStateError,
++          "Source data has been neutered"));
++      continue;
++    }
++
+     auto* image = decoder_->DecodeFrameBufferAtIndex(request->frame_index);
+     if (decoder_->Failed() || !image) {
+       request->complete = true;
+@@ -326,6 +333,7 @@ void ImageDecoderExternal::MaybeSatisfyPendingDecodes() {
+ }
+ 
+ void ImageDecoderExternal::MaybeSatisfyPendingMetadataDecodes() {
++  DCHECK(HasValidEncodedData());
+   DCHECK(decoder_);
+   DCHECK(decoder_->Failed() || decoder_->IsDecodedSizeAvailable());
+   for (auto& resolver : pending_metadata_decodes_)
+@@ -334,6 +342,9 @@ void ImageDecoderExternal::MaybeSatisfyPendingMetadataDecodes() {
+ }
+ 
+ void ImageDecoderExternal::MaybeUpdateMetadata() {
++  if (!HasValidEncodedData())
++    return;
++
+   const size_t decoded_frame_count = decoder_->FrameCount();
+   if (decoder_->Failed()) {
+     MaybeSatisfyPendingMetadataDecodes();
+@@ -358,4 +369,22 @@ void ImageDecoderExternal::MaybeUpdateMetadata() {
+   MaybeSatisfyPendingMetadataDecodes();
+ }
+ 
++bool ImageDecoderExternal::HasValidEncodedData() const {
++  // If we keep an internal copy of the data, it's always valid.
++  if (stream_buffer_)
++    return true;
++
++  if (init_data_->data().IsArrayBuffer() &&
++      init_data_->data().GetAsArrayBuffer()->IsDetached()) {
++    return false;
++  }
++
++  if (init_data_->data().IsArrayBufferView() &&
++      !init_data_->data().GetAsArrayBufferView()->BaseAddress()) {
++    return false;
++  }
++
++  return true;
++}
++
+ }  // namespace blink
+diff --git a/third_party/blink/renderer/modules/webcodecs/image_decoder_external.cc.rej b/third_party/blink/renderer/modules/webcodecs/image_decoder_external.cc.rej
+new file mode 100644
+index 0000000000000000000000000000000000000000..68d0eae0c7cd414f8cbe90aee79417d2a4ffe98b
+--- /dev/null
++++ b/third_party/blink/renderer/modules/webcodecs/image_decoder_external.cc.rej
+@@ -0,0 +1,53 @@
++diff a/third_party/blink/renderer/modules/webcodecs/image_decoder_external.cc b/third_party/blink/renderer/modules/webcodecs/image_decoder_external.cc	(rejected hunks)
++@@ -120,9 +120,8 @@
++     return;
++   }
++ 
++-  // TODO(crbug.com/1073995): Data is owned by the caller who may be free to
++-  // manipulate it. We will probably need to make a copy to our own internal
++-  // data or neuter the buffers as seen by JS.
+++  // Since data is owned by the caller who may be free to manipulate it, we must
+++  // check HasValidEncodedData() before attempting to access |decoder_|.
++   segment_reader_ = SegmentReader::CreateFromSkData(
++       SkData::MakeWithoutCopy(buffer.Data(), buffer.ByteLengthAsSizeT()));
++   if (!segment_reader_) {
++@@ -266,6 +265,7 @@
++ 
++ void ImageDecoderExternal::CreateImageDecoder() {
++   DCHECK(!decoder_);
+++  DCHECK(HasValidEncodedData());
++ 
++   // TODO(crbug.com/1073995): We should probably call
++   // ImageDecoder::SetMemoryAllocator() so that we can recycle frame buffers for
++@@ -320,6 +320,13 @@
++       continue;
++     }
++ 
+++    if (!HasValidEncodedData()) {
+++      request->exception = MakeGarbageCollected<DOMException>(
+++          DOMExceptionCode::kInvalidStateError,
+++          "Source data has been neutered");
+++      continue;
+++    }
+++
++     auto* image = decoder_->DecodeFrameBufferAtIndex(request->frame_index);
++     if (decoder_->Failed() || !image) {
++       // TODO(crbug.com/1073995): Include frameIndex in rejection?
++@@ -398,6 +405,7 @@
++ }
++ 
++ void ImageDecoderExternal::MaybeSatisfyPendingMetadataDecodes() {
+++  DCHECK(HasValidEncodedData());
++   DCHECK(decoder_);
++   if (!decoder_->IsSizeAvailable() && !decoder_->Failed())
++     return;
++@@ -409,6 +417,9 @@
++ }
++ 
++ void ImageDecoderExternal::MaybeUpdateMetadata() {
+++  if (!HasValidEncodedData())
+++    return;
+++
++   // Since we always create the decoder at construction, we need to wait until
++   // at least the size is available before signaling that metadata has been
++   // retrieved.
+diff --git a/third_party/blink/renderer/modules/webcodecs/image_decoder_external.h b/third_party/blink/renderer/modules/webcodecs/image_decoder_external.h
+index 1b4ac0ce7eade63c06c1030c29fc90a8551aa7c2..7d9d534ce14d07e49fca99f11297e74b1311363e 100644
+--- a/third_party/blink/renderer/modules/webcodecs/image_decoder_external.h
++++ b/third_party/blink/renderer/modules/webcodecs/image_decoder_external.h
+@@ -61,6 +61,10 @@ class MODULES_EXPORT ImageDecoderExternal final : public ScriptWrappable,
+   void MaybeSatisfyPendingMetadataDecodes();
+   void MaybeUpdateMetadata();
+ 
++  // Returns false if the decoder was constructed with an ArrayBuffer or
++  // ArrayBufferView that has since been neutered.
++  bool HasValidEncodedData() const;
++
+   Member<ScriptState> script_state_;
+ 
+   // Used when a ReadableStream is provided.
diff --git a/patches/chromium/notification_provenance.patch b/patches/chromium/notification_provenance.patch
index a2291a5e7569d..b756c5fc9502d 100644
--- a/patches/chromium/notification_provenance.patch
+++ b/patches/chromium/notification_provenance.patch
@@ -108,10 +108,10 @@ index 4bf25bf1fa69f7d3869369172d375e2e489e62a1..f80ef2cecc8b111dc54e109646573a59
        mojo::PendingReceiver<blink::mojom::NotificationService> receiver);
  
 diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
-index b3cee953abdb4f8d6991dedaa43b4f8267f44f9d..a2fc5326f7ecc3d0bd57587f78d0e3231c5a49ac 100644
+index bf902312d467b93e31dd5c174ec0ce6ffc0e7588..f0cce20cc36b12758f3252dc935d2437df76fb74 100644
 --- a/content/browser/renderer_host/render_process_host_impl.cc
 +++ b/content/browser/renderer_host/render_process_host_impl.cc
-@@ -2148,7 +2148,7 @@ void RenderProcessHostImpl::CreateNotificationService(
+@@ -2147,7 +2147,7 @@ void RenderProcessHostImpl::CreateNotificationService(
      mojo::PendingReceiver<blink::mojom::NotificationService> receiver) {
    DCHECK_CURRENTLY_ON(BrowserThread::UI);
    storage_partition_impl_->GetPlatformNotificationContext()->CreateService(
diff --git a/patches/chromium/notifications_crash_if_improper_action_icons_sent_from_renderer.patch b/patches/chromium/notifications_crash_if_improper_action_icons_sent_from_renderer.patch
new file mode 100644
index 0000000000000..f161a8adef2a2
--- /dev/null
+++ b/patches/chromium/notifications_crash_if_improper_action_icons_sent_from_renderer.patch
@@ -0,0 +1,148 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Andrey Belenko <andrey.belenko@gmail.com>
+Date: Wed, 19 May 2021 12:59:35 +0200
+Subject: Notifications: crash if improper action icons sent from renderer.
+
+Previously, the code only called DCHECK but as this data is from a
+renderer we should probably crash the browser.
+
+(cherry picked from commit 3b28dc50187b22e080ad9c1e4e6c4f3b08f3136d)
+
+Bug: 1200019
+Change-Id: If4d9d48c8e18a3ed9c8bb3a50b952591259e0db5
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2838205
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2872493
+
+diff --git a/chrome/browser/notifications/platform_notification_service_impl.cc b/chrome/browser/notifications/platform_notification_service_impl.cc
+index 9071744d4093180850f2a5d7cf3fccd098138192..4fccc612e3cc761b72b629b5e0bd5da5cb29f71e 100644
+--- a/chrome/browser/notifications/platform_notification_service_impl.cc
++++ b/chrome/browser/notifications/platform_notification_service_impl.cc
+@@ -401,8 +401,10 @@ PlatformNotificationServiceImpl::CreateNotificationFromData(
+     const std::string& notification_id,
+     const blink::PlatformNotificationData& notification_data,
+     const blink::NotificationResources& notification_resources) const {
+-  DCHECK_EQ(notification_data.actions.size(),
+-            notification_resources.action_icons.size());
++  // Blink always populates action icons to match the actions, even if no icon
++  // was fetched, so this indicates a compromised renderer.
++  CHECK_EQ(notification_data.actions.size(),
++           notification_resources.action_icons.size());
+ 
+   message_center::RichNotificationData optional_fields;
+ 
+diff --git a/content/browser/notifications/blink_notification_service_impl.cc b/content/browser/notifications/blink_notification_service_impl.cc
+index 7105781e0019b456f287fd0ebb6e309efe2cecad..575017c41e72df1686471b104ccfd06913314e25 100644
+--- a/content/browser/notifications/blink_notification_service_impl.cc
++++ b/content/browser/notifications/blink_notification_service_impl.cc
+@@ -39,6 +39,9 @@ const char kBadMessageImproperNotificationImage[] =
+     "disabled.";
+ const char kBadMessageInvalidNotificationTriggerTimestamp[] =
+     "Received an invalid notification trigger timestamp.";
++const char kBadMessageInvalidNotificationActionButtons[] =
++    "Received a notification with a number of action images that does not "
++    "match the number of actions.";
+ 
+ // Returns the implementation of the PlatformNotificationService. May be NULL.
+ PlatformNotificationService* GetNotificationService(
+@@ -134,7 +137,8 @@ void BlinkNotificationServiceImpl::DisplayNonPersistentNotification(
+     mojo::PendingRemote<blink::mojom::NonPersistentNotificationListener>
+         event_listener_remote) {
+   DCHECK_CURRENTLY_ON(BrowserThread::UI);
+-  if (!ValidateNotificationResources(notification_resources))
++  if (!ValidateNotificationDataAndResources(platform_notification_data,
++                                            notification_resources))
+     return;
+ 
+   if (!GetNotificationService(browser_context_))
+@@ -190,28 +194,31 @@ BlinkNotificationServiceImpl::CheckPermissionStatus() {
+                             origin_.GetURL());
+ }
+ 
+-bool BlinkNotificationServiceImpl::ValidateNotificationResources(
++bool BlinkNotificationServiceImpl::ValidateNotificationDataAndResources(
++    const blink::PlatformNotificationData& platform_notification_data,
+     const blink::NotificationResources& notification_resources) {
+-  if (notification_resources.image.drawsNothing() ||
+-      base::FeatureList::IsEnabled(features::kNotificationContentImage))
+-    return true;
+-  receiver_.ReportBadMessage(kBadMessageImproperNotificationImage);
+-  // The above ReportBadMessage() closes |binding_| but does not trigger its
+-  // connection error handler, so we need to call the error handler explicitly
+-  // here to do some necessary work.
+-  OnConnectionError();
+-  return false;
+-}
++  if (platform_notification_data.actions.size() !=
++      notification_resources.action_icons.size()) {
++    receiver_.ReportBadMessage(kBadMessageInvalidNotificationActionButtons);
++    OnConnectionError();
++    return false;
++  }
+ 
+-// Checks if this notification has a valid trigger.
+-bool BlinkNotificationServiceImpl::ValidateNotificationData(
+-    const blink::PlatformNotificationData& notification_data) {
+-  if (!CheckNotificationTriggerRange(notification_data)) {
++  if (!CheckNotificationTriggerRange(platform_notification_data)) {
+     receiver_.ReportBadMessage(kBadMessageInvalidNotificationTriggerTimestamp);
+     OnConnectionError();
+     return false;
+   }
+ 
++  if (!notification_resources.image.drawsNothing() &&
++      !base::FeatureList::IsEnabled(features::kNotificationContentImage)) {
++    receiver_.ReportBadMessage(kBadMessageImproperNotificationImage);
++    // The above ReportBadMessage() closes |binding_| but does not trigger its
++    // connection error handler, so we need to call the error handler explicitly
++    // here to do some necessary work.
++    OnConnectionError();
++    return false;
++  }
+   return true;
+ }
+ 
+@@ -221,10 +228,8 @@ void BlinkNotificationServiceImpl::DisplayPersistentNotification(
+     const blink::NotificationResources& notification_resources,
+     DisplayPersistentNotificationCallback callback) {
+   DCHECK_CURRENTLY_ON(BrowserThread::UI);
+-  if (!ValidateNotificationResources(notification_resources))
+-    return;
+-
+-  if (!ValidateNotificationData(platform_notification_data))
++  if (!ValidateNotificationDataAndResources(platform_notification_data,
++                                            notification_resources))
+     return;
+ 
+   if (!GetNotificationService(browser_context_)) {
+diff --git a/content/browser/notifications/blink_notification_service_impl.h b/content/browser/notifications/blink_notification_service_impl.h
+index dc5307e6500b0bfb5da83e8d8ff8886b91133522..fe1abadd2bc196914cb7b6d9fe29a75435f08988 100644
+--- a/content/browser/notifications/blink_notification_service_impl.h
++++ b/content/browser/notifications/blink_notification_service_impl.h
+@@ -72,20 +72,15 @@ class CONTENT_EXPORT BlinkNotificationServiceImpl
+   // Check the permission status for the current |origin_|.
+   blink::mojom::PermissionStatus CheckPermissionStatus();
+ 
+-  // Validate |notification_resources| received in a Mojo IPC message.
+-  // If the validation failed, we'd close the Mojo connection |binding_| and
+-  // destroy |this| by calling OnConnectionError() directly, then return false.
+-  // So, please do not touch |this| again after you got a false return value.
+-  bool ValidateNotificationResources(
++  // Validate |notification_data| and |notification_resources| received in a
++  // Mojo IPC message. If the validation failed, we'd close the Mojo connection
++  // |binding_| and destroy |this| by calling OnConnectionError() directly, then
++  // return false. So, please do not touch |this| again after you got a false
++  // return value.
++  bool ValidateNotificationDataAndResources(
++      const blink::PlatformNotificationData& notification_data,
+       const blink::NotificationResources& notification_resources);
+ 
+-  // Validate |notification_data| received in a Mojo IPC message.
+-  // If the validation failed, we'd close the Mojo connection |binding_| and
+-  // destroy |this| by calling OnConnectionError() directly, then return false.
+-  // So, please do not touch |this| again after you got a false return value.
+-  bool ValidateNotificationData(
+-      const blink::PlatformNotificationData& notification_data);
+-
+   void DidWriteNotificationData(DisplayPersistentNotificationCallback callback,
+                                 bool success,
+                                 const std::string& notification_id);
diff --git a/patches/chromium/only_zero_out_cross-origin_audio_that_doesn_t_get_played_out.patch b/patches/chromium/only_zero_out_cross-origin_audio_that_doesn_t_get_played_out.patch
new file mode 100644
index 0000000000000..b1a2a8c0d89be
--- /dev/null
+++ b/patches/chromium/only_zero_out_cross-origin_audio_that_doesn_t_get_played_out.patch
@@ -0,0 +1,206 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Dale Curtis <dalecurtis@chromium.org>
+Date: Mon, 5 Oct 2020 22:14:12 +0000
+Subject: Only zero out cross-origin audio that doesn't get played out.
+
+Cross-origin audio is still allowed to play out, it just can't be
+captured by the containing page.
+
+Bug: 1128657, 1134679
+Test: Unit tests added.
+
+Change-Id: Id4c73e315072b8683e45a2ddf929d534f1da9928
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2450390
+Auto-Submit: Dale Curtis <dalecurtis@chromium.org>
+Reviewed-by: Will Cassella <cassew@google.com>
+Commit-Queue: Dale Curtis <dalecurtis@chromium.org>
+Cr-Commit-Position: refs/heads/master@{#813956}
+
+diff --git a/third_party/blink/renderer/platform/media/webaudiosourceprovider_impl.cc b/third_party/blink/renderer/platform/media/webaudiosourceprovider_impl.cc
+index c54e1768886a7d2d922f13596a9fb3b456ba6611..5cc64a4ae790f8b0b72520f1b8d2b89617bd22e2 100644
+--- a/third_party/blink/renderer/platform/media/webaudiosourceprovider_impl.cc
++++ b/third_party/blink/renderer/platform/media/webaudiosourceprovider_impl.cc
+@@ -81,10 +81,6 @@ class WebAudioSourceProviderImpl::TeeFilter
+     const int num_rendered_frames = renderer_->Render(
+         delay, delay_timestamp, prior_frames_skipped, audio_bus);
+ 
+-    // Zero out frames after rendering
+-    if (origin_tainted_.IsSet())
+-      audio_bus->Zero();
+-
+     // Avoid taking the copy lock for the vast majority of cases.
+     if (copy_required_) {
+       base::AutoLock auto_lock(copy_lock_);
+@@ -93,7 +89,11 @@ class WebAudioSourceProviderImpl::TeeFilter
+             media::AudioTimestampHelper::TimeToFrames(delay, sample_rate_);
+         std::unique_ptr<media::AudioBus> bus_copy =
+             media::AudioBus::Create(audio_bus->channels(), audio_bus->frames());
+-        audio_bus->CopyTo(bus_copy.get());
++        // Disable copying when origin is tainted.
++        if (origin_tainted_.IsSet())
++          bus_copy->Zero();
++        else
++          audio_bus->CopyTo(bus_copy.get());
+         copy_audio_bus_callback_.Run(std::move(bus_copy),
+                                      static_cast<uint32_t>(frames_delayed),
+                                      sample_rate_);
+@@ -119,6 +119,7 @@ class WebAudioSourceProviderImpl::TeeFilter
+   }
+ 
+   void TaintOrigin() { origin_tainted_.Set(); }
++  bool is_tainted() const { return origin_tainted_.IsSet(); }
+ 
+  private:
+   AudioRendererSink::RenderCallback* renderer_ = nullptr;
+@@ -220,6 +221,13 @@ void WebAudioSourceProviderImpl::ProvideInput(
+   DCHECK_EQ(tee_filter_->channels(), bus_wrapper_->channels());
+   const int frames = tee_filter_->Render(
+       base::TimeDelta(), base::TimeTicks::Now(), 0, bus_wrapper_.get());
++
++  // Zero out frames after rendering for tainted origins.
++  if (tee_filter_->is_tainted()) {
++    bus_wrapper_->Zero();
++    return;
++  }
++
+   if (frames < incoming_number_of_frames)
+     bus_wrapper_->ZeroFramesPartial(frames, incoming_number_of_frames - frames);
+ 
+diff --git a/third_party/blink/renderer/platform/media/webaudiosourceprovider_impl_test.cc b/third_party/blink/renderer/platform/media/webaudiosourceprovider_impl_test.cc
+index 1f0c69d7143c06af3127a3f4b8dea6bd416d949f..db319bcc4f2fce940b5269da994e61a9978772f0 100644
+--- a/third_party/blink/renderer/platform/media/webaudiosourceprovider_impl_test.cc
++++ b/third_party/blink/renderer/platform/media/webaudiosourceprovider_impl_test.cc
+@@ -22,6 +22,11 @@ using ::testing::_;
+ namespace blink {
+ 
+ namespace {
++
++MATCHER(IsMuted, std::string(negation ? "isn't" : "is") + " muted") {
++  return arg->AreFramesZero();
++}
++
+ const float kTestVolume = 0.25;
+ const int kTestSampleRate = 48000;
+ }  // namespace
+@@ -89,17 +94,10 @@ class WebAudioSourceProviderImplTest : public testing::Test,
+ 
+   // WebAudioSourceProviderClient implementation.
+   MOCK_METHOD2(SetFormat, void(uint32_t numberOfChannels, float sampleRate));
+-
+-  // CopyAudioCB. Added forwarder method due to GMock troubles with scoped_ptr.
+   MOCK_METHOD3(DoCopyAudioCB,
+-               void(media::AudioBus*,
++               void(std::unique_ptr<media::AudioBus> bus,
+                     uint32_t frames_delayed,
+                     int sample_rate));
+-  void OnAudioBus(std::unique_ptr<media::AudioBus> bus,
+-                  uint32_t frames_delayed,
+-                  int sample_rate) {
+-    DoCopyAudioCB(bus.get(), frames_delayed, sample_rate);
+-  }
+ 
+   int Render(media::AudioBus* audio_bus) {
+     return wasp_impl_->RenderForTesting(audio_bus);
+@@ -163,6 +161,35 @@ TEST_F(WebAudioSourceProviderImplTest, SinkMethods) {
+   CallAllSinkMethodsAndVerify(false);
+ }
+ 
++// Test tainting effects on Render().
++TEST_F(WebAudioSourceProviderImplTest, RenderTainted) {
++  auto bus = media::AudioBus::Create(params_);
++  bus->Zero();
++
++  // Point the WebVector into memory owned by |bus|.
++  WebVector<float*> audio_data(static_cast<size_t>(bus->channels()));
++  for (size_t i = 0; i < audio_data.size(); ++i)
++    audio_data[i] = bus->channel(static_cast<int>(i));
++
++  wasp_impl_->Initialize(params_, &fake_callback_);
++
++  EXPECT_CALL(*mock_sink_, Start());
++  wasp_impl_->Start();
++  EXPECT_CALL(*mock_sink_, Play());
++  wasp_impl_->Play();
++
++  Render(bus.get());
++  ASSERT_FALSE(bus->AreFramesZero());
++
++  // Normal audio output should be unaffected by tainting.
++  wasp_impl_->TaintOrigin();
++  Render(bus.get());
++  ASSERT_FALSE(bus->AreFramesZero());
++
++  EXPECT_CALL(*mock_sink_, Stop());
++  wasp_impl_->Stop();
++}
++
+ // Test the AudioRendererSink state machine and its effects on provideInput().
+ TEST_F(WebAudioSourceProviderImplTest, ProvideInput) {
+   auto bus1 = media::AudioBus::Create(params_);
+@@ -249,12 +276,37 @@ TEST_F(WebAudioSourceProviderImplTest, ProvideInput) {
+   ASSERT_TRUE(CompareBusses(bus1.get(), bus2.get()));
+ }
+ 
++// Test tainting effects on ProvideInput().
++TEST_F(WebAudioSourceProviderImplTest, ProvideInputTainted) {
++  auto bus = media::AudioBus::Create(params_);
++  bus->Zero();
++
++  // Point the WebVector into memory owned by |bus|.
++  WebVector<float*> audio_data(static_cast<size_t>(bus->channels()));
++  for (size_t i = 0; i < audio_data.size(); ++i)
++    audio_data[i] = bus->channel(static_cast<int>(i));
++
++  wasp_impl_->Initialize(params_, &fake_callback_);
++  SetClient(this);
++
++  wasp_impl_->Start();
++  wasp_impl_->Play();
++  wasp_impl_->ProvideInput(audio_data, params_.frames_per_buffer());
++  ASSERT_FALSE(bus->AreFramesZero());
++
++  wasp_impl_->TaintOrigin();
++  wasp_impl_->ProvideInput(audio_data, params_.frames_per_buffer());
++  ASSERT_TRUE(bus->AreFramesZero());
++
++  wasp_impl_->Stop();
++}
++
+ // Verify CopyAudioCB is called if registered.
+ TEST_F(WebAudioSourceProviderImplTest, CopyAudioCB) {
+   testing::InSequence s;
+   wasp_impl_->Initialize(params_, &fake_callback_);
+   wasp_impl_->SetCopyAudioCallback(WTF::BindRepeating(
+-      &WebAudioSourceProviderImplTest::OnAudioBus, base::Unretained(this)));
++      &WebAudioSourceProviderImplTest::DoCopyAudioCB, base::Unretained(this)));
+ 
+   const auto bus1 = media::AudioBus::Create(params_);
+   EXPECT_CALL(*this, DoCopyAudioCB(_, 0, params_.sample_rate())).Times(1);
+@@ -267,6 +319,27 @@ TEST_F(WebAudioSourceProviderImplTest, CopyAudioCB) {
+   testing::Mock::VerifyAndClear(mock_sink_.get());
+ }
+ 
++// Verify CopyAudioCB is zero when tainted.
++TEST_F(WebAudioSourceProviderImplTest, CopyAudioCBTainted) {
++  testing::InSequence s;
++  wasp_impl_->Initialize(params_, &fake_callback_);
++  wasp_impl_->SetCopyAudioCallback(WTF::BindRepeating(
++      &WebAudioSourceProviderImplTest::DoCopyAudioCB, base::Unretained(this)));
++
++  const auto bus1 = media::AudioBus::Create(params_);
++  EXPECT_CALL(*this,
++              DoCopyAudioCB(testing::Not(IsMuted()), 0, params_.sample_rate()))
++      .Times(1);
++  Render(bus1.get());
++
++  wasp_impl_->TaintOrigin();
++  EXPECT_CALL(*this, DoCopyAudioCB(IsMuted(), 0, params_.sample_rate()))
++      .Times(1);
++  Render(bus1.get());
++
++  testing::Mock::VerifyAndClear(mock_sink_.get());
++}
++
+ TEST_F(WebAudioSourceProviderImplTest, MultipleInitializeWithSetClient) {
+   // setClient() with a nullptr client should do nothing if no client is set.
+   wasp_impl_->SetClient(nullptr);
diff --git a/patches/chromium/ots_backport_maxp_sanitization.patch b/patches/chromium/ots_backport_maxp_sanitization.patch
new file mode 100644
index 0000000000000..ca498391dc370
--- /dev/null
+++ b/patches/chromium/ots_backport_maxp_sanitization.patch
@@ -0,0 +1,342 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Dominik=20R=C3=B6ttsches?= <drott@chromium.org>
+Date: Mon, 11 Jan 2021 12:27:12 +0000
+Subject: Backport maxp sanitization
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Backport [1] to perform additional sanitization on maxp values.
+
+[1] https://github.com/khaledhosny/ots/pull/227
+
+(cherry picked from commit 6d0e7d799a46336c6bc297d4075a27dd0e7c235d)
+
+Bug: 1153329
+Change-Id: I4bc2288574802559f6c9c67a52b6dfcd8cc7467a
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2588339
+Auto-Submit: Dominik Röttsches <drott@chromium.org>
+Commit-Queue: Kenichi Ishibashi <bashi@chromium.org>
+Reviewed-by: Koji Ishii <kojii@chromium.org>
+Reviewed-by: Kenichi Ishibashi <bashi@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#836679}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2620800
+Commit-Queue: Dominik Röttsches <drott@chromium.org>
+Commit-Queue: Anders Hartvoll Ruud <andruud@chromium.org>
+Reviewed-by: Anders Hartvoll Ruud <andruud@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4324@{#1620}
+Cr-Branched-From: c73b5a651d37a6c4d0b8e3262cc4015a5579c6c8-refs/heads/master@{#827102}
+
+diff --git a/third_party/ots/README.chromium b/third_party/ots/README.chromium
+index 8e8aaba85b508110eb9662d5714712dd481e037c..c35d4f71f5af26c19675a3a5d8ef8ee3730c94da 100644
+--- a/third_party/ots/README.chromium
++++ b/third_party/ots/README.chromium
+@@ -11,4 +11,7 @@ Local Modifications:
+ - BUILD.gn: Added.
+ - fuzz/: Added.
+ - ots.cc: Allow CFF2 outlines, upstreamed in
+-  https://github.com/khaledhosny/ots/pull/161
+\ No newline at end of file
++  https://github.com/khaledhosny/ots/pull/161
++- glyf.h, glyf.cc - Backport of "Sanitise values for fonts with invalid
++  maxPoints and maxComponentPoints"
++  https://github.com/khaledhosny/ots/pull/227
+diff --git a/third_party/ots/src/glyf.cc b/third_party/ots/src/glyf.cc
+index b8fb2866da7d16c2cafc470dcc10277a19bd325a..8d2e498ea8f48160e06de8200f2afc6e598252df 100644
+--- a/third_party/ots/src/glyf.cc
++++ b/third_party/ots/src/glyf.cc
+@@ -99,6 +99,11 @@ bool OpenTypeGLYF::ParseSimpleGlyph(Buffer &glyph,
+     num_flags = tmp_index + 1;
+   }
+ 
++  if (num_flags > this->maxp->max_points) {
++    Warning("Number of contour points exceeds maxp maxPoints, adjusting limit.");
++    this->maxp->max_points = num_flags;
++  }
++
+   uint16_t bytecode_length = 0;
+   if (!glyph.ReadU16(&bytecode_length)) {
+     return Error("Can't read bytecode length");
+@@ -143,7 +148,9 @@ bool OpenTypeGLYF::ParseSimpleGlyph(Buffer &glyph,
+ #define WE_HAVE_A_TWO_BY_TWO     (1u << 7)
+ #define WE_HAVE_INSTRUCTIONS     (1u << 8)
+ 
+-bool OpenTypeGLYF::ParseCompositeGlyph(Buffer &glyph) {
++bool OpenTypeGLYF::ParseCompositeGlyph(
++    Buffer &glyph,
++    ComponentPointCount* component_point_count) {
+   uint16_t flags = 0;
+   uint16_t gid = 0;
+   do {
+@@ -192,6 +199,10 @@ bool OpenTypeGLYF::ParseCompositeGlyph(Buffer &glyph) {
+         return Error("Can't read transform");
+       }
+     }
++
++    // Push inital components on stack at level 1
++    // to traverse them in parent function.
++    component_point_count->gid_stack.push_back({gid, 1});
+   } while (flags & MORE_COMPONENTS);
+ 
+   if (flags & WE_HAVE_INSTRUCTIONS) {
+@@ -241,29 +252,16 @@ bool OpenTypeGLYF::Parse(const uint8_t *data, size_t length) {
+   uint32_t current_offset = 0;
+ 
+   for (unsigned i = 0; i < num_glyphs; ++i) {
+-    const unsigned gly_offset = offsets[i];
+-    // The LOCA parser checks that these values are monotonic
+-    const unsigned gly_length = offsets[i + 1] - offsets[i];
+-    if (!gly_length) {
+-      // this glyph has no outline (e.g. the space charactor)
++
++    Buffer glyph(GetGlyphBufferSection(data, length, offsets, i));
++    if (!glyph.buffer())
++      return false;
++
++    if (!glyph.length()) {
+       resulting_offsets[i] = current_offset;
+       continue;
+     }
+ 
+-    if (gly_offset >= length) {
+-      return Error("Glyph %d offset %d too high %ld", i, gly_offset, length);
+-    }
+-    // Since these are unsigned types, the compiler is not allowed to assume
+-    // that they never overflow.
+-    if (gly_offset + gly_length < gly_offset) {
+-      return Error("Glyph %d length (%d < 0)!", i, gly_length);
+-    }
+-    if (gly_offset + gly_length > length) {
+-      return Error("Glyph %d length %d too high", i, gly_length);
+-    }
+-
+-    Buffer glyph(data + gly_offset, gly_length);
+-
+     int16_t num_contours, xmin, ymin, xmax, ymax;
+     if (!glyph.ReadS16(&num_contours) ||
+         !glyph.ReadS16(&xmin) ||
+@@ -300,9 +298,56 @@ bool OpenTypeGLYF::Parse(const uint8_t *data, size_t length) {
+         return Error("Failed to parse glyph %d", i);
+       }
+     } else {
+-      if (!ParseCompositeGlyph(glyph)) {
++
++      ComponentPointCount component_point_count;
++      if (!ParseCompositeGlyph(glyph, &component_point_count)) {
+         return Error("Failed to parse glyph %d", i);
+       }
++
++      // Check maxComponentDepth and validate maxComponentPoints.
++      // ParseCompositeGlyph placed the first set of component glyphs on the
++      // component_point_count.gid_stack, which we start to process below. If a
++      // nested glyph is in turn a component glyph, additional glyphs are placed
++      // on the stack.
++      while (component_point_count.gid_stack.size()) {
++        GidAtLevel stack_top_gid = component_point_count.gid_stack.back();
++        component_point_count.gid_stack.pop_back();
++
++        Buffer points_count_glyph(GetGlyphBufferSection(
++            data,
++            length,
++            offsets,
++            stack_top_gid.gid));
++
++        if (!points_count_glyph.buffer())
++          return false;
++
++        if (!points_count_glyph.length())
++          continue;
++
++        if (!TraverseComponentsCountingPoints(points_count_glyph,
++                                              i,
++                                              stack_top_gid.level,
++                                              &component_point_count)) {
++          return Error("Error validating component points and depth.");
++        }
++
++        if (component_point_count.accumulated_component_points >
++            std::numeric_limits<uint16_t>::max()) {
++          return Error("Illegal composite points value "
++                       "exceeding 0xFFFF for base glyph %d.", i);
++        } else if (component_point_count.accumulated_component_points >
++                   this->maxp->max_c_points) {
++          Warning("Number of composite points in glyph %d exceeds "
++                  "maxp maxCompositePoints: %d vs %d, adjusting limit.",
++                  i,
++                  component_point_count.accumulated_component_points,
++                  this->maxp->max_c_points
++                  );
++          this->maxp->max_c_points =
++              component_point_count.accumulated_component_points;
++        }
++      }
+     }
+ 
+     size_t new_size = glyph.offset();
+@@ -342,6 +387,122 @@ bool OpenTypeGLYF::Parse(const uint8_t *data, size_t length) {
+   return true;
+ }
+ 
++bool OpenTypeGLYF::TraverseComponentsCountingPoints(
++    Buffer &glyph,
++    uint16_t base_glyph_id,
++    uint32_t level,
++    ComponentPointCount* component_point_count) {
++
++  int16_t num_contours;
++  if (!glyph.ReadS16(&num_contours) ||
++      !glyph.Skip(8)) {
++    return Error("Can't read glyph header.");
++  }
++
++  if (num_contours <= -2) {
++    return Error("Bad number of contours %d in glyph.", num_contours);
++  }
++
++  if (num_contours == 0)
++    return true;
++
++  // FontTools counts a component level for each traversed recursion. We start
++  // counting at level 0. If we reach a level that's deeper than
++  // maxComponentDepth, we expand maxComponentDepth unless it's larger than
++  // the maximum possible depth.
++  if (level > std::numeric_limits<uint16_t>::max()) {
++    return Error("Illegal component depth exceeding 0xFFFF in base glyph id %d.",
++                 base_glyph_id);
++  } else if (level > this->maxp->max_c_depth) {
++    this->maxp->max_c_depth = level;
++    Warning("Component depth exceeds maxp maxComponentDepth "
++            "in glyph %d, adjust limit to %d.",
++            base_glyph_id, level);
++  }
++
++  if (num_contours > 0) {
++    uint16_t num_points = 0;
++    for (int i = 0; i < num_contours; ++i) {
++      // Simple glyph, add contour points.
++      uint16_t tmp_index = 0;
++      if (!glyph.ReadU16(&tmp_index)) {
++        return Error("Can't read contour index %d", i);
++      }
++      num_points = tmp_index + 1;
++    }
++
++    component_point_count->accumulated_component_points += num_points;
++    return true;
++  } else  {
++    assert(num_contours == -1);
++
++    // Composite glyph, add gid's to stack.
++    uint16_t flags = 0;
++    uint16_t gid = 0;
++    do {
++      if (!glyph.ReadU16(&flags) || !glyph.ReadU16(&gid)) {
++        return Error("Can't read composite glyph flags or glyphIndex");
++      }
++
++      size_t skip_bytes = 0;
++      skip_bytes += flags & ARG_1_AND_2_ARE_WORDS ? 4 : 2;
++
++      if (flags & WE_HAVE_A_SCALE) {
++        skip_bytes += 2;
++      } else if (flags & WE_HAVE_AN_X_AND_Y_SCALE) {
++        skip_bytes += 4;
++      } else if (flags & WE_HAVE_A_TWO_BY_TWO) {
++        skip_bytes += 8;
++      }
++
++      if (!glyph.Skip(skip_bytes)) {
++        return Error("Failed to parse component glyph.");
++      }
++
++      if (gid >= this->maxp->num_glyphs) {
++        return Error("Invalid glyph id used in composite glyph: %d", gid);
++      }
++
++      component_point_count->gid_stack.push_back({gid, level + 1u});
++    } while (flags & MORE_COMPONENTS);
++    return true;
++  }
++}
++
++Buffer OpenTypeGLYF::GetGlyphBufferSection(
++    const uint8_t *data,
++    size_t length,
++    const std::vector<uint32_t>& loca_offsets,
++    unsigned glyph_id) {
++
++  Buffer null_buffer(nullptr, 0);
++
++  const unsigned gly_offset = loca_offsets[glyph_id];
++  // The LOCA parser checks that these values are monotonic
++  const unsigned gly_length = loca_offsets[glyph_id + 1] - loca_offsets[glyph_id];
++  if (!gly_length) {
++    // this glyph has no outline (e.g. the space character)
++    return Buffer(data + gly_offset, 0);
++  }
++
++  if (gly_offset >= length) {
++    Error("Glyph %d offset %d too high %ld", glyph_id, gly_offset, length);
++    return null_buffer;
++  }
++  // Since these are unsigned types, the compiler is not allowed to assume
++  // that they never overflow.
++  if (gly_offset + gly_length < gly_offset) {
++    Error("Glyph %d length (%d < 0)!", glyph_id, gly_length);
++    return null_buffer;
++  }
++  if (gly_offset + gly_length > length) {
++    Error("Glyph %d length %d too high", glyph_id, gly_length);
++    return null_buffer;
++  }
++
++  return Buffer(data + gly_offset, gly_length);
++}
++
+ bool OpenTypeGLYF::Serialize(OTSStream *out) {
+   for (unsigned i = 0; i < this->iov.size(); ++i) {
+     if (!out->Write(this->iov[i].first, this->iov[i].second)) {
+diff --git a/third_party/ots/src/glyf.h b/third_party/ots/src/glyf.h
+index 1da94e4b9455c47371ffb07a39921be1aaca61e8..08c585df349db447a7b9bfa0fd2e8dde31728e5d 100644
+--- a/third_party/ots/src/glyf.h
++++ b/third_party/ots/src/glyf.h
+@@ -23,12 +23,38 @@ class OpenTypeGLYF : public Table {
+   bool Serialize(OTSStream *out);
+ 
+  private:
++  struct GidAtLevel {
++    uint16_t gid;
++    uint32_t level;
++  };
++
++  struct ComponentPointCount {
++    ComponentPointCount() : accumulated_component_points(0) {};
++    uint32_t accumulated_component_points;
++    std::vector<GidAtLevel> gid_stack;
++  };
++
+   bool ParseFlagsForSimpleGlyph(Buffer &glyph,
+                                 uint32_t num_flags,
+                                 uint32_t *flag_index,
+                                 uint32_t *coordinates_length);
+   bool ParseSimpleGlyph(Buffer &glyph, int16_t num_contours);
+-  bool ParseCompositeGlyph(Buffer &glyph);
++  bool ParseCompositeGlyph(
++      Buffer &glyph,
++      ComponentPointCount* component_point_count);
++
++
++  bool TraverseComponentsCountingPoints(
++      Buffer& glyph,
++      uint16_t base_glyph_id,
++      uint32_t level,
++      ComponentPointCount* component_point_count);
++
++  Buffer GetGlyphBufferSection(
++      const uint8_t *data,
++      size_t length,
++      const std::vector<uint32_t>& loca_offsets,
++      unsigned glyph_id);
+ 
+   OpenTypeMAXP* maxp;
+ 
diff --git a/patches/chromium/ots_backport_of_glyf_guard_access_to_maxp_version_1_field.patch b/patches/chromium/ots_backport_of_glyf_guard_access_to_maxp_version_1_field.patch
new file mode 100644
index 0000000000000..5659517851d65
--- /dev/null
+++ b/patches/chromium/ots_backport_of_glyf_guard_access_to_maxp_version_1_field.patch
@@ -0,0 +1,68 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Dominik=20R=C3=B6ttsches?= <drott@chromium.org>
+Date: Mon, 11 Jan 2021 14:33:32 +0000
+Subject: Backport of "[glyf] Guard access to maxp version 1 field"
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+(cherry picked from commit fac68744a85e8c601f60f1ef73a6e9ddf150855e)
+
+Bug: 1153329, 1158774
+Change-Id: I6acd298f841f92a751f606d710415fe32343825f
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2593261
+Commit-Queue: Kenichi Ishibashi <bashi@chromium.org>
+Reviewed-by: Kenichi Ishibashi <bashi@chromium.org>
+Auto-Submit: Dominik Röttsches <drott@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#837353}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2621064
+Commit-Queue: Dominik Röttsches <drott@chromium.org>
+Commit-Queue: Anders Hartvoll Ruud <andruud@chromium.org>
+Reviewed-by: Anders Hartvoll Ruud <andruud@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4324@{#1625}
+Cr-Branched-From: c73b5a651d37a6c4d0b8e3262cc4015a5579c6c8-refs/heads/master@{#827102}
+
+diff --git a/third_party/ots/README.chromium b/third_party/ots/README.chromium
+index c35d4f71f5af26c19675a3a5d8ef8ee3730c94da..43ddc08a0e1a65bb084b60d66c641c911cfba279 100644
+--- a/third_party/ots/README.chromium
++++ b/third_party/ots/README.chromium
+@@ -15,3 +15,5 @@ Local Modifications:
+ - glyf.h, glyf.cc - Backport of "Sanitise values for fonts with invalid
+   maxPoints and maxComponentPoints"
+   https://github.com/khaledhosny/ots/pull/227
++- glyf.cc - Backport of "[glyf] Guard access to maxp version 1 field"
++  Upstream commit 1141c81c411b599e40496679129d0884715e8650
+diff --git a/third_party/ots/src/glyf.cc b/third_party/ots/src/glyf.cc
+index 8d2e498ea8f48160e06de8200f2afc6e598252df..ab9232ea2dcb5fe0ea2b4d3274b11103c85e51fa 100644
+--- a/third_party/ots/src/glyf.cc
++++ b/third_party/ots/src/glyf.cc
+@@ -99,7 +99,8 @@ bool OpenTypeGLYF::ParseSimpleGlyph(Buffer &glyph,
+     num_flags = tmp_index + 1;
+   }
+ 
+-  if (num_flags > this->maxp->max_points) {
++  if (this->maxp->version_1 &&
++      num_flags > this->maxp->max_points) {
+     Warning("Number of contour points exceeds maxp maxPoints, adjusting limit.");
+     this->maxp->max_points = num_flags;
+   }
+@@ -336,7 +337,8 @@ bool OpenTypeGLYF::Parse(const uint8_t *data, size_t length) {
+             std::numeric_limits<uint16_t>::max()) {
+           return Error("Illegal composite points value "
+                        "exceeding 0xFFFF for base glyph %d.", i);
+-        } else if (component_point_count.accumulated_component_points >
++        } else if (this->maxp->version_1 &&
++                   component_point_count.accumulated_component_points >
+                    this->maxp->max_c_points) {
+           Warning("Number of composite points in glyph %d exceeds "
+                   "maxp maxCompositePoints: %d vs %d, adjusting limit.",
+@@ -413,7 +415,8 @@ bool OpenTypeGLYF::TraverseComponentsCountingPoints(
+   if (level > std::numeric_limits<uint16_t>::max()) {
+     return Error("Illegal component depth exceeding 0xFFFF in base glyph id %d.",
+                  base_glyph_id);
+-  } else if (level > this->maxp->max_c_depth) {
++  } else if (this->maxp->version_1 &&
++             level > this->maxp->max_c_depth) {
+     this->maxp->max_c_depth = level;
+     Warning("Component depth exceeds maxp maxComponentDepth "
+             "in glyph %d, adjust limit to %d.",
diff --git a/patches/chromium/printing.patch b/patches/chromium/printing.patch
index 4eaf9f0ef900b..7d65843ddc2dd 100644
--- a/patches/chromium/printing.patch
+++ b/patches/chromium/printing.patch
@@ -11,10 +11,22 @@ majority of changes originally come from these PRs:
 This patch also fixes callback for manual user cancellation and success.
 
 diff --git a/chrome/browser/printing/print_job.cc b/chrome/browser/printing/print_job.cc
-index 668a14bff461e83b2c6d9d7f23d9674ff081ef12..674f141e80c0316fd47558c4d428a9706ac5a7b6 100644
+index 668a14bff461e83b2c6d9d7f23d9674ff081ef12..77912096bb99cfa0d3b081d6ad9bdfec4d32569a 100644
 --- a/chrome/browser/printing/print_job.cc
 +++ b/chrome/browser/printing/print_job.cc
-@@ -353,12 +353,14 @@ void PrintJob::StartPdfToEmfConversion(
+@@ -347,18 +347,25 @@ void PrintJob::StartPdfToEmfConversion(
+   // seems to work with the fix for this bug applied.
+   const PrintSettings& settings = document()->settings();
+   bool print_text_with_gdi =
+-      settings.print_text_with_gdi() && !settings.printer_is_xps() &&
++#if defined(OS_WIN)
++      settings.is_modifiable()
++#else
++      settings.print_text_with_gdi()
++#endif
++      && !settings.printer_is_xps() &&
+       base::FeatureList::IsEnabled(::features::kGdiTextPrinting);
+ 
    // TODO(thestig): Figure out why crbug.com/1083911 occurred, which is likely
    // because |web_contents| was null. As a result, this section has many more
    // pointer checks to avoid crashing.
@@ -90,7 +102,7 @@ index 52efa2037a31f84a261502107bfebc69ae5a419e..4834e92ae99f12043e5ce476370f6434
  }
  
 diff --git a/chrome/browser/printing/print_view_manager_base.cc b/chrome/browser/printing/print_view_manager_base.cc
-index 8a743d0dd74b087059ff812019ae568a22c5fa01..617b246ab41a42990e191c6ab548679a240416bd 100644
+index 8a743d0dd74b087059ff812019ae568a22c5fa01..7224fa1556205c224db8326ca048f42939ac0580 100644
 --- a/chrome/browser/printing/print_view_manager_base.cc
 +++ b/chrome/browser/printing/print_view_manager_base.cc
 @@ -27,10 +27,7 @@
@@ -244,7 +256,7 @@ index 8a743d0dd74b087059ff812019ae568a22c5fa01..617b246ab41a42990e191c6ab548679a
    printing_succeeded_ = false;
    return true;
  }
-@@ -632,6 +654,15 @@ void PrintViewManagerBase::ReleasePrintJob() {
+@@ -632,14 +654,21 @@ void PrintViewManagerBase::ReleasePrintJob() {
    content::RenderFrameHost* rfh = printing_rfh_;
    printing_rfh_ = nullptr;
  
@@ -260,7 +272,15 @@ index 8a743d0dd74b087059ff812019ae568a22c5fa01..617b246ab41a42990e191c6ab548679a
    if (!print_job_)
      return;
  
-@@ -675,7 +706,7 @@ bool PrintViewManagerBase::RunInnerMessageLoop() {
+   if (rfh)
+     GetPrintRenderFrame(rfh)->PrintingDone(printing_succeeded_);
+ 
+-  registrar_.Remove(this, chrome::NOTIFICATION_PRINT_JOB_EVENT,
+-                    content::Source<PrintJob>(print_job_.get()));
+   // Don't close the worker thread.
+   print_job_ = nullptr;
+ }
+@@ -675,7 +704,7 @@ bool PrintViewManagerBase::RunInnerMessageLoop() {
  }
  
  bool PrintViewManagerBase::OpportunisticallyCreatePrintJob(int cookie) {
diff --git a/patches/chromium/reland_reland_fsa_add_issafepathcomponent_checks_to.patch b/patches/chromium/reland_reland_fsa_add_issafepathcomponent_checks_to.patch
new file mode 100644
index 0000000000000..f38dfa4292f10
--- /dev/null
+++ b/patches/chromium/reland_reland_fsa_add_issafepathcomponent_checks_to.patch
@@ -0,0 +1,476 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Marijn Kruisselbrink <mek@chromium.org>
+Date: Tue, 8 Dec 2020 07:20:47 +0000
+Subject: Reland "Reland "[FSA] Add IsSafePathComponent checks to
+ GetFile/GetDirectoryHandle.""
+
+This is a reland of 2d41c3952d2851948a09ddcf3e97bae6c419b024
+
+The added test was modified to no longer assert that all unsafe files
+were written to disk successfully. This should make the test pass (albeit
+with less stringent checks) on file systems/platforms that don't allow
+all unsafe file names.
+
+Original change's description:
+> Reland "[FSA] Add IsSafePathComponent checks to GetFile/GetDirectoryHandle."
+>
+> This is a reland of 004377929febd7cf7392932b01df7f4a0a362679
+>
+> The main difference is to make sure iterating over a directory doesn't
+> return files we don't want to expose either (and not CHECK failing if
+> such files are found when iterating).
+>
+> Original change's description:
+> > [FSA] Add IsSafePathComponent checks to GetFile/GetDirectoryHandle.
+> >
+> > This isn't directly using net::IsSafePortablePathComponent since what
+> > is safe for the File System Access API is not the same as what is safe
+> > for Downloads. As such currently this duplicates a lot of the
+> > implementation of this method, but in a followup we should attempt to
+> > unify these two implementations as much as possible.
+> >
+> > Bug: 1150810, 1154757
+> > Change-Id: Iba4c92ef5f1cd924aa22b9dd201762d48b4bbc3b
+> > Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2568383
+> > Commit-Queue: Marijn Kruisselbrink <mek@chromium.org>
+> > Reviewed-by: Victor Costan <pwnall@chromium.org>
+> > Cr-Commit-Position: refs/heads/master@{#833042}
+>
+> Bug: 1150810
+> Bug: 1154757
+> Change-Id: I3341b9824a1ac4cbd6f100355960ad55b01f0753
+> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2575370
+> Commit-Queue: Victor Costan <pwnall@chromium.org>
+> Reviewed-by: Victor Costan <pwnall@chromium.org>
+> Cr-Commit-Position: refs/heads/master@{#834118}
+
+Bug: 1150810
+Bug: 1154757
+Change-Id: Ie5cad9a7b2383c89b96e8a7be6cfe75ad2555fa6
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2577614
+Commit-Queue: Marijn Kruisselbrink <mek@chromium.org>
+Auto-Submit: Marijn Kruisselbrink <mek@chromium.org>
+Reviewed-by: Victor Costan <pwnall@chromium.org>
+Cr-Commit-Position: refs/heads/master@{#834598}
+
+diff --git a/content/browser/native_file_system/native_file_system_directory_handle_impl.cc b/content/browser/native_file_system/native_file_system_directory_handle_impl.cc
+index 89ea8eaf06595607b7c54f96318ad0f984690b99..fff61f2a648d9be70c50115a446bea5b14c3b3ce 100644
+--- a/content/browser/native_file_system/native_file_system_directory_handle_impl.cc
++++ b/content/browser/native_file_system/native_file_system_directory_handle_impl.cc
+@@ -4,6 +4,7 @@
+ 
+ #include "content/browser/native_file_system/native_file_system_directory_handle_impl.h"
+ 
++#include "base/i18n/file_util_icu.h"
+ #include "base/strings/strcat.h"
+ #include "base/strings/string_util.h"
+ #include "base/strings/utf_string_conversions.h"
+@@ -12,6 +13,7 @@
+ #include "content/browser/native_file_system/native_file_system_transfer_token_impl.h"
+ #include "mojo/public/cpp/bindings/pending_remote.h"
+ #include "net/base/escape.h"
++#include "net/base/filename_util.h"
+ #include "storage/browser/file_system/file_system_context.h"
+ #include "storage/browser/file_system/file_system_operation_runner.h"
+ #include "storage/common/file_system/file_system_util.h"
+@@ -28,27 +30,6 @@ using storage::FileSystemOperationRunner;
+ 
+ namespace content {
+ 
+-namespace {
+-
+-// Returns true when |name| contains a path separator like "/".
+-bool ContainsPathSeparator(const std::string& name) {
+-  const base::FilePath filepath_name = storage::StringToFilePath(name);
+-
+-  const size_t separator_position =
+-      filepath_name.value().find_first_of(base::FilePath::kSeparators);
+-
+-  return separator_position != base::FilePath::StringType::npos;
+-}
+-
+-// Returns true when |name| is "." or "..".
+-bool IsCurrentOrParentDirectory(const std::string& name) {
+-  const base::FilePath filepath_name = storage::StringToFilePath(name);
+-  return filepath_name.value() == base::FilePath::kCurrentDirectory ||
+-         filepath_name.value() == base::FilePath::kParentDirectory;
+-}
+-
+-}  // namespace
+-
+ NativeFileSystemDirectoryHandleImpl::NativeFileSystemDirectoryHandleImpl(
+     NativeFileSystemManagerImpl* manager,
+     const BindingContext& context,
+@@ -387,9 +368,10 @@ void NativeFileSystemDirectoryHandleImpl::DidReadDirectory(
+     blink::mojom::NativeFileSystemErrorPtr get_child_url_result =
+         GetChildURL(basename, &child_url);
+ 
+-    // All entries must exist in this directory as a direct child with a valid
+-    // |basename|.
+-    CHECK_EQ(get_child_url_result->status, NativeFileSystemStatus::kOk);
++    // Skip any entries with names that aren't allowed to be accessed by
++    // this API, such as files with disallowed characters in their names.
++    if (get_child_url_result->status != NativeFileSystemStatus::kOk)
++      continue;
+ 
+     entries.push_back(
+         CreateEntry(basename, child_url,
+@@ -418,25 +400,99 @@ void NativeFileSystemDirectoryHandleImpl::RemoveEntryImpl(
+       url, recurse);
+ }
+ 
++namespace {
++
++// Returns whether the specified extension receives special handling by the
++// Windows shell.
++bool IsShellIntegratedExtension(const base::FilePath::StringType& extension) {
++  base::FilePath::StringType extension_lower = base::ToLowerASCII(extension);
++
++  // .lnk files may be used to execute arbitrary code (see
++  // https://nvd.nist.gov/vuln/detail/CVE-2010-2568).
++  if (extension_lower == FILE_PATH_LITERAL("lnk"))
++    return true;
++
++  // Setting a file's extension to a CLSID may conceal its actual file type on
++  // some Windows versions (see https://nvd.nist.gov/vuln/detail/CVE-2004-0420).
++  if (!extension_lower.empty() &&
++      (extension_lower.front() == FILE_PATH_LITERAL('{')) &&
++      (extension_lower.back() == FILE_PATH_LITERAL('}')))
++    return true;
++  return false;
++}
++
++}  // namespace
++
++// static
++bool NativeFileSystemDirectoryHandleImpl::IsSafePathComponent(
++    const std::string& name) {
++  // This method is similar to net::IsSafePortablePathComponent, with a few
++  // notable differences where the net version does not consider names safe
++  // while here we do want to allow them. These cases are:
++  //  - Names starting with a '.'. These would be hidden files in most file
++  //    managers, but are something we explicitly want to support for the
++  //    File System Access API, for names like .git.
++  //  - Names that end in '.local'. For downloads writing to such files is
++  //    dangerous since it might modify what code is executed when an executable
++  //    is ran from the same directory. For the File System Access API this
++  //    isn't really a problem though, since if a website can write to a .local
++  //    file via a FileSystemDirectoryHandle they can also just modify the
++  //    executables in the directory directly.
++  //
++  // TODO(https://crbug.com/1154757): Unify this with
++  // net::IsSafePortablePathComponent, with the result probably ending up in
++  // base/i18n/file_util_icu.h.
++
++  const base::FilePath component = storage::StringToFilePath(name);
++  // Empty names, or names that contain path separators are invalid.
++  if (component.empty() || component != component.BaseName() ||
++      component != component.StripTrailingSeparators()) {
++    return false;
++  }
++
++  base::string16 component16;
++#if defined(OS_WIN)
++  component16.assign(component.value().begin(), component.value().end());
++#else
++  std::string component8 = component.AsUTF8Unsafe();
++  if (!base::UTF8ToUTF16(component8.c_str(), component8.size(), &component16))
++    return false;
++#endif
++  // base::i18n::IsFilenameLegal blocks names that start with '.', so strip out
++  // a leading '.' before passing it to that method.
++  // TODO(mek): Consider making IsFilenameLegal more flexible to support this
++  // use case.
++  if (component16[0] == '.')
++    component16 = component16.substr(1);
++  if (!base::i18n::IsFilenameLegal(component16))
++    return false;
++
++  base::FilePath::StringType extension = component.Extension();
++  if (!extension.empty())
++    extension.erase(extension.begin());  // Erase preceding '.'.
++  if (IsShellIntegratedExtension(extension))
++    return false;
++
++  if (base::TrimString(component.value(), FILE_PATH_LITERAL("."),
++                       base::TRIM_TRAILING) != component.value()) {
++    return false;
++  }
++
++  if (net::IsReservedNameOnWindows(component.value()))
++    return false;
++
++  return true;
++}
++
++
+ blink::mojom::NativeFileSystemErrorPtr
+ NativeFileSystemDirectoryHandleImpl::GetChildURL(
+     const std::string& basename,
+     storage::FileSystemURL* result) {
+-  // TODO(mek): Rather than doing URL serialization and parsing we should just
+-  // have a way to get a child FileSystemURL directly from its parent.
+-
+-  if (basename.empty()) {
+-    return native_file_system_error::FromStatus(
+-        NativeFileSystemStatus::kInvalidArgument,
+-        "Name can't be an empty string.");
+-  }
+ 
+-  if (ContainsPathSeparator(basename) || IsCurrentOrParentDirectory(basename)) {
+-    // |basename| must refer to a entry that exists in this directory as a
+-    // direct child.
++  if (!IsSafePathComponent(basename)) {
+     return native_file_system_error::FromStatus(
+-        NativeFileSystemStatus::kInvalidArgument,
+-        "Name contains invalid characters.");
++        NativeFileSystemStatus::kInvalidArgument, "Name is not allowed.");
+   }
+ 
+   std::string escaped_name =
+diff --git a/content/browser/native_file_system/native_file_system_directory_handle_impl.h b/content/browser/native_file_system/native_file_system_directory_handle_impl.h
+index 061ffbb26d13966bc1d4da6c31fd17687d31422a..7ff29b706da905dbb30328bfe854cd052f2b84bb 100644
+--- a/content/browser/native_file_system/native_file_system_directory_handle_impl.h
++++ b/content/browser/native_file_system/native_file_system_directory_handle_impl.h
+@@ -57,6 +57,14 @@ class CONTENT_EXPORT NativeFileSystemDirectoryHandleImpl
+       mojo::PendingReceiver<blink::mojom::NativeFileSystemTransferToken> token)
+       override;
+ 
++  // The File System Access API should not give access to files that might
++  // trigger special handling from the operating system. This method is used to
++  // validate that all paths passed to GetFileHandle/GetDirectoryHandle are safe
++  // to be exposed to the web.
++  // TODO(https://crbug.com/1154757): Merge this with
++  // net::IsSafePortablePathComponent.
++  static bool IsSafePathComponent(const std::string& name);
++
+  private:
+   // This method creates the file if it does not currently exists. I.e. it is
+   // the implementation for passing create=true to GetFile.
+diff --git a/content/browser/native_file_system/native_file_system_directory_handle_impl_unittest.cc b/content/browser/native_file_system/native_file_system_directory_handle_impl_unittest.cc
+new file mode 100644
+index 0000000000000000000000000000000000000000..8f5e109c78cebecca1a9724327ceb1fefa01e6db
+--- /dev/null
++++ b/content/browser/native_file_system/native_file_system_directory_handle_impl_unittest.cc
+@@ -0,0 +1,196 @@
++// Copyright 2020 The Chromium Authors. All rights reserved.
++// Use of this source code is governed by a BSD-style license that can be
++// found in the LICENSE file.
++
++#include "content/browser/native_file_system/native_file_system_directory_handle_impl.h"
++
++#include <iterator>
++#include <string>
++
++#include "base/bind.h"
++#include "base/files/file_util.h"
++#include "base/files/scoped_temp_dir.h"
++#include "base/macros.h"
++#include "base/run_loop.h"
++#include "base/test/bind.h"
++#include "base/test/task_environment.h"
++#include "build/build_config.h"
++#include "content/browser/native_file_system/fixed_native_file_system_permission_grant.h"
++#include "content/public/test/browser_task_environment.h"
++#include "storage/browser/test/test_file_system_context.h"
++#include "testing/gmock/include/gmock/gmock.h"
++#include "testing/gtest/include/gtest/gtest.h"
++
++namespace content {
++
++using storage::FileSystemURL;
++
++class NativeFileSystemDirectoryHandleImplTest : public testing::Test {
++ public:
++  NativeFileSystemDirectoryHandleImplTest()
++      : task_environment_(base::test::TaskEnvironment::MainThreadType::IO) {}
++
++  void SetUp() override {
++    ASSERT_TRUE(dir_.CreateUniqueTempDir());
++
++    file_system_context_ = storage::CreateFileSystemContextForTesting(
++        /*quota_manager_proxy=*/nullptr, dir_.GetPath());
++
++    chrome_blob_context_ = base::MakeRefCounted<ChromeBlobStorageContext>();
++    chrome_blob_context_->InitializeOnIOThread(base::FilePath(),
++                                               base::FilePath(), nullptr);
++
++    manager_ = base::MakeRefCounted<NativeFileSystemManagerImpl>(
++        file_system_context_, chrome_blob_context_,
++        /*permission_context=*/nullptr,
++        /*off_the_record=*/false);
++
++    auto url_and_fs = manager_->CreateFileSystemURLFromPath(
++        test_src_origin_, NativeFileSystemEntryFactory::PathType::kLocal,
++        dir_.GetPath());
++
++    handle_ = std::make_unique<NativeFileSystemDirectoryHandleImpl>(
++        manager_.get(),
++        NativeFileSystemManagerImpl::BindingContext(
++            test_src_origin_, test_src_url_, /*worker_process_id=*/1),
++        url_and_fs.url,
++        NativeFileSystemManagerImpl::SharedHandleState(
++            allow_grant_, allow_grant_, std::move(url_and_fs.file_system)));
++  }
++
++  void TearDown() override { task_environment_.RunUntilIdle(); }
++
++ protected:
++  const GURL test_src_url_ = GURL("http://example.com/foo");
++  const url::Origin test_src_origin_ = url::Origin::Create(test_src_url_);
++
++  BrowserTaskEnvironment task_environment_;
++
++  base::ScopedTempDir dir_;
++  scoped_refptr<storage::FileSystemContext> file_system_context_;
++  scoped_refptr<ChromeBlobStorageContext> chrome_blob_context_;
++  scoped_refptr<NativeFileSystemManagerImpl> manager_;
++
++  scoped_refptr<FixedNativeFileSystemPermissionGrant> allow_grant_ =
++      base::MakeRefCounted<FixedNativeFileSystemPermissionGrant>(
++          FixedNativeFileSystemPermissionGrant::PermissionStatus::GRANTED,
++          base::FilePath());
++  std::unique_ptr<NativeFileSystemDirectoryHandleImpl> handle_;
++};
++
++TEST_F(NativeFileSystemDirectoryHandleImplTest, IsSafePathComponent) {
++  constexpr const char* kSafePathComponents[] = {
++      "a", "a.txt", "a b.txt", "My Computer", ".a", "lnk.zip", "lnk", "a.local",
++  };
++
++  constexpr const char* kUnsafePathComponents[] = {
++      "",
++      ".",
++      "..",
++      "...",
++      "con",
++      "con.zip",
++      "NUL",
++      "NUL.zip",
++      "a.",
++      "a\"a",
++      "a<a",
++      "a>a",
++      "a?a",
++      "a/",
++      "a\\",
++      "a ",
++      "a . .",
++      " Computer",
++      "My Computer.{a}",
++      "My Computer.{20D04FE0-3AEA-1069-A2D8-08002B30309D}",
++      "a\\a",
++      "a.lnk",
++      "a/a",
++      "C:\\",
++      "C:/",
++      "C:",
++  };
++
++  for (const char* component : kSafePathComponents) {
++    EXPECT_TRUE(
++        NativeFileSystemDirectoryHandleImpl::IsSafePathComponent(component))
++        << component;
++  }
++  for (const char* component : kUnsafePathComponents) {
++    EXPECT_FALSE(
++        NativeFileSystemDirectoryHandleImpl::IsSafePathComponent(component))
++        << component;
++  }
++}
++
++namespace {
++class TestNativeFileSystemDirectoryEntriesListener
++    : public blink::mojom::NativeFileSystemDirectoryEntriesListener {
++ public:
++  TestNativeFileSystemDirectoryEntriesListener(
++      std::vector<blink::mojom::NativeFileSystemEntryPtr>* entries,
++      base::OnceClosure done)
++      : entries_(entries), done_(std::move(done)) {}
++
++  void DidReadDirectory(
++      blink::mojom::NativeFileSystemErrorPtr result,
++      std::vector<blink::mojom::NativeFileSystemEntryPtr> entries,
++      bool has_more_entries) override {
++    EXPECT_EQ(result->status, blink::mojom::NativeFileSystemStatus::kOk);
++    entries_->insert(entries_->end(), std::make_move_iterator(entries.begin()),
++                     std::make_move_iterator(entries.end()));
++    if (!has_more_entries) {
++      std::move(done_).Run();
++    }
++  }
++
++ private:
++  std::vector<blink::mojom::NativeFileSystemEntryPtr>* entries_;
++  base::OnceClosure done_;
++};
++}  // namespace
++
++TEST_F(NativeFileSystemDirectoryHandleImplTest, GetEntries) {
++  constexpr const char* kSafeNames[] = {"a", "a.txt", "My Computer", "lnk.txt",
++                                        "a.local"};
++  constexpr const char* kUnsafeNames[] = {
++      "con",  "con.zip", "NUL",   "a.",
++      "a\"a", "a . .",   "a.lnk", "My Computer.{a}",
++  };
++  for (const char* name : kSafeNames) {
++    ASSERT_TRUE(base::WriteFile(dir_.GetPath().AppendASCII(name), "data"))
++        << name;
++  }
++  for (const char* name : kUnsafeNames) {
++    base::FilePath file_path = dir_.GetPath().AppendASCII(name);
++    bool success = base::WriteFile(file_path, "data");
++#if !defined(OS_WIN)
++    // Some of the unsafe names are not legal file names on Windows. This is
++    // okay, and doesn't materially effect the outcome of the test, so just
++    // ignore any failures writing these files to disk.
++    EXPECT_TRUE(success) << "Failed to create file " << file_path;
++#else
++    ignore_result(success);
++#endif
++  }
++
++  std::vector<blink::mojom::NativeFileSystemEntryPtr> entries;
++  base::RunLoop loop;
++  mojo::PendingRemote<blink::mojom::NativeFileSystemDirectoryEntriesListener>
++      listener;
++  mojo::MakeSelfOwnedReceiver(
++      std::make_unique<TestNativeFileSystemDirectoryEntriesListener>(
++          &entries, loop.QuitClosure()),
++      listener.InitWithNewPipeAndPassReceiver());
++  handle_->GetEntries(std::move(listener));
++  loop.Run();
++
++  std::vector<std::string> names;
++  for (const auto& entry : entries) {
++    names.push_back(entry->name);
++  }
++  EXPECT_THAT(names, testing::UnorderedElementsAreArray(kSafeNames));
++}
++
++}  // namespace content
+diff --git a/content/browser/native_file_system/native_file_system_file_handle_impl_unittest.cc b/content/browser/native_file_system/native_file_system_file_handle_impl_unittest.cc
+index 2cb03f2ad023f90a5f494492becb615fa7c6ddcf..98a794e3426c0c6df1ea1513fb1dff31f47e4227 100644
+--- a/content/browser/native_file_system/native_file_system_file_handle_impl_unittest.cc
++++ b/content/browser/native_file_system/native_file_system_file_handle_impl_unittest.cc
+@@ -30,8 +30,6 @@
+ #include "testing/gtest/include/gtest/gtest.h"
+ #include "third_party/blink/public/common/features.h"
+ 
+-using storage::FileSystemURL;
+-
+ namespace content {
+ 
+ using blink::mojom::PermissionStatus;
+diff --git a/content/test/BUILD.gn b/content/test/BUILD.gn
+index 6ac9a2997b4071333fbb056a4b0f1d680578bf61..ff01656c305107fba856b39b7f0f955a24dc43a1 100644
+--- a/content/test/BUILD.gn
++++ b/content/test/BUILD.gn
+@@ -1796,6 +1796,7 @@ test("content_unittests") {
+     "../browser/media/webaudio/audio_context_manager_impl_unittest.cc",
+     "../browser/memory/swap_metrics_driver_impl_unittest.cc",
+     "../browser/native_file_system/file_system_chooser_unittest.cc",
++    "../browser/native_file_system/native_file_system_directory_handle_impl_unittest.cc",
+     "../browser/native_file_system/native_file_system_file_handle_impl_unittest.cc",
+     "../browser/native_file_system/native_file_system_file_writer_impl_unittest.cc",
+     "../browser/native_file_system/native_file_system_handle_base_unittest.cc",
diff --git a/patches/chromium/reland_views_handle_deletion_when_toggling_fullscreen.patch b/patches/chromium/reland_views_handle_deletion_when_toggling_fullscreen.patch
new file mode 100644
index 0000000000000..55fa67c3ea449
--- /dev/null
+++ b/patches/chromium/reland_views_handle_deletion_when_toggling_fullscreen.patch
@@ -0,0 +1,149 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Andrey Belenko <andrey.belenko@gmail.com>
+Date: Wed, 19 May 2021 13:26:14 +0200
+Subject: views: handle deletion when toggling fullscreen
+
+This differs from the first in so far as needing to add more early
+outs in the windows side if destroyed. This was caught by the asan
+bot.
+
+Toggling fullscreen means the bounds change. There are some
+code paths that may delete the Widget when the bounds changes.
+This patch ensures the right thing happens if the Widget is
+deleted when this happens.
+
+BUG=1197436
+
+(cherry picked from commit 60fe7a686c0620855c28a60721f668a99e409ee4)
+
+Change-Id: I8ce8f2045878b6f6de530f58e386149189900498
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2857227
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2868317
+
+diff --git a/ui/views/widget/desktop_aura/desktop_window_tree_host_platform.cc b/ui/views/widget/desktop_aura/desktop_window_tree_host_platform.cc
+index aaf1b482f71a9fbf047ce8bd37cefd31d6947770..da6ba0505bbf99c0c7c58e28019c28332b31e490 100644
+--- a/ui/views/widget/desktop_aura/desktop_window_tree_host_platform.cc
++++ b/ui/views/widget/desktop_aura/desktop_window_tree_host_platform.cc
+@@ -585,7 +585,10 @@ void DesktopWindowTreeHostPlatform::SetFullscreen(bool fullscreen) {
+   if (IsFullscreen() == fullscreen)
+     return;
+ 
++  auto weak_ptr = GetWeakPtr();
+   platform_window()->ToggleFullscreen();
++  if (!weak_ptr)
++    return;
+ 
+   // The state must change synchronously to let media react on fullscreen
+   // changes.
+diff --git a/ui/views/widget/desktop_aura/desktop_window_tree_host_win.cc b/ui/views/widget/desktop_aura/desktop_window_tree_host_win.cc
+index b5430b871cfcc8c9aa54ac1f5aa9ec699c7aac86..1de1f16f61b16966a8a79efc055132804192829d 100644
+--- a/ui/views/widget/desktop_aura/desktop_window_tree_host_win.cc
++++ b/ui/views/widget/desktop_aura/desktop_window_tree_host_win.cc
+@@ -462,7 +462,10 @@ void DesktopWindowTreeHostWin::FrameTypeChanged() {
+ }
+ 
+ void DesktopWindowTreeHostWin::SetFullscreen(bool fullscreen) {
++  auto weak_ptr = GetWeakPtr();
+   message_handler_->SetFullscreen(fullscreen);
++  if (!weak_ptr)
++    return;
+   // TODO(sky): workaround for ScopedFullscreenVisibility showing window
+   // directly. Instead of this should listen for visibility changes and then
+   // update window.
+diff --git a/ui/views/widget/widget.cc b/ui/views/widget/widget.cc
+index a06ebe82c33f11fb2cd90382029cb0b5c20ce6de..b590396343e12d92016103720461805372319639 100644
+--- a/ui/views/widget/widget.cc
++++ b/ui/views/widget/widget.cc
+@@ -722,7 +722,10 @@ void Widget::SetFullscreen(bool fullscreen) {
+   if (IsFullscreen() == fullscreen)
+     return;
+ 
++  auto weak_ptr = GetWeakPtr();
+   native_widget_->SetFullscreen(fullscreen);
++  if (!weak_ptr)
++    return;
+ 
+   if (non_client_view_)
+     non_client_view_->InvalidateLayout();
+diff --git a/ui/views/win/fullscreen_handler.cc b/ui/views/win/fullscreen_handler.cc
+index 8791362556fcd7544b79982dd6535d55ecd25a50..708d28f45028ee10459c7973d51caecfe0d09097 100644
+--- a/ui/views/win/fullscreen_handler.cc
++++ b/ui/views/win/fullscreen_handler.cc
+@@ -70,6 +70,7 @@ void FullscreenHandler::SetFullscreenImpl(bool fullscreen) {
+ 
+   fullscreen_ = fullscreen;
+ 
++  auto ref = weak_ptr_factory_.GetWeakPtr();
+   if (fullscreen_) {
+     // Set new window style and size.
+     SetWindowLong(hwnd_, GWL_STYLE,
+@@ -102,6 +103,8 @@ void FullscreenHandler::SetFullscreenImpl(bool fullscreen) {
+                  new_rect.height(),
+                  SWP_NOZORDER | SWP_NOACTIVATE | SWP_FRAMECHANGED);
+   }
++  if (!ref)
++    return;
+ 
+   MarkFullscreen(fullscreen);
+ }
+diff --git a/ui/views/win/fullscreen_handler.h b/ui/views/win/fullscreen_handler.h
+index fe17c7f0368b1dd35a37006033ddf34d35ea3982..c76ef18a6f59e9239d5a281d26c6e34646b68ee3 100644
+--- a/ui/views/win/fullscreen_handler.h
++++ b/ui/views/win/fullscreen_handler.h
+@@ -11,6 +11,7 @@
+ #include <map>
+ 
+ #include "base/macros.h"
++#include "base/memory/weak_ptr.h"
+ 
+ namespace gfx {
+ class Rect;
+@@ -54,6 +55,8 @@ class FullscreenHandler {
+   // Used to mark a window as fullscreen.
+   Microsoft::WRL::ComPtr<ITaskbarList2> task_bar_list_;
+ 
++  base::WeakPtrFactory<FullscreenHandler> weak_ptr_factory_{this};
++
+   DISALLOW_COPY_AND_ASSIGN(FullscreenHandler);
+ };
+ 
+diff --git a/ui/views/win/hwnd_message_handler.cc b/ui/views/win/hwnd_message_handler.cc
+index 39518ac65d091bc52a26cf84b89fa350459e874b..68ed019d5cf6d2af084ce6ec7745b8814ea14a39 100644
+--- a/ui/views/win/hwnd_message_handler.cc
++++ b/ui/views/win/hwnd_message_handler.cc
+@@ -900,7 +900,10 @@ void HWNDMessageHandler::SetWindowIcons(const gfx::ImageSkia& window_icon,
+ 
+ void HWNDMessageHandler::SetFullscreen(bool fullscreen) {
+   background_fullscreen_hack_ = false;
++  auto ref = msg_handler_weak_factory_.GetWeakPtr();
+   fullscreen_handler()->SetFullscreen(fullscreen);
++  if (!ref)
++    return;
+ 
+   // Add the fullscreen window to the fullscreen window map which is used to
+   // handle window activations.
+@@ -1401,8 +1404,10 @@ void HWNDMessageHandler::ClientAreaSizeChanged() {
+   // Ignore size changes due to fullscreen windows losing activation.
+   if (background_fullscreen_hack_ && !sent_window_size_changing_)
+     return;
+-  gfx::Size s = GetClientAreaBounds().size();
+-  delegate_->HandleClientSizeChanged(s);
++  auto ref = msg_handler_weak_factory_.GetWeakPtr();
++  delegate_->HandleClientSizeChanged(GetClientAreaBounds().size());
++  if (!ref)
++    return;
+ 
+   current_window_size_message_++;
+   sent_window_size_changing_ = false;
+@@ -2925,8 +2930,11 @@ void HWNDMessageHandler::OnWindowPosChanging(WINDOWPOS* window_pos) {
+ void HWNDMessageHandler::OnWindowPosChanged(WINDOWPOS* window_pos) {
+   TRACE_EVENT0("ui", "HWNDMessageHandler::OnWindowPosChanged");
+ 
++  base::WeakPtr<HWNDMessageHandler> ref(msg_handler_weak_factory_.GetWeakPtr());
+   if (DidClientAreaSizeChange(window_pos))
+     ClientAreaSizeChanged();
++  if (!ref)
++    return;
+   if (window_pos->flags & SWP_FRAMECHANGED)
+     SetDwmFrameExtension(DwmFrameState::kOn);
+   if (window_pos->flags & SWP_SHOWWINDOW) {
diff --git a/patches/chromium/remove_tabs_and_line_breaks_from_the_middle_of_app_names_when.patch b/patches/chromium/remove_tabs_and_line_breaks_from_the_middle_of_app_names_when.patch
new file mode 100644
index 0000000000000..ccc1a3b450b8f
--- /dev/null
+++ b/patches/chromium/remove_tabs_and_line_breaks_from_the_middle_of_app_names_when.patch
@@ -0,0 +1,50 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Andrey Belenko <andrey.belenko@gmail.com>
+Date: Wed, 19 May 2021 17:13:11 +0200
+Subject: Remove tabs and line breaks from the middle of app names when
+ parsing.
+
+(cherry picked from commit f9b0a09d60acabadfcb9ddeacc9d943cc9811199)
+
+Bug: 1180126
+Change-Id: Ie6f08d45f97214c4f1ab766aa8af001b8fb8599c
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2821876
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2877715
+
+diff --git a/third_party/blink/renderer/modules/manifest/manifest_parser.cc b/third_party/blink/renderer/modules/manifest/manifest_parser.cc
+index 8a80176fb4626f2e916176412ba0a8a518de80e6..0cf2d9e04cabbd69af7a7a66c5a07e69508e6d24 100644
+--- a/third_party/blink/renderer/modules/manifest/manifest_parser.cc
++++ b/third_party/blink/renderer/modules/manifest/manifest_parser.cc
+@@ -40,6 +40,10 @@ bool VerifyFiles(const Vector<mojom::blink::ManifestFileFilterPtr>& files) {
+   return true;
+ }
+ 
++static bool IsCrLfOrTabChar(UChar c) {
++  return c == '\n' || c == '\r' || c == '\t';
++}
++
+ }  // anonymous namespace
+ 
+ ManifestParser::ManifestParser(const String& data,
+@@ -238,11 +242,21 @@ KURL ManifestParser::ParseURL(const JSONObject* object,
+ 
+ String ManifestParser::ParseName(const JSONObject* object) {
+   base::Optional<String> name = ParseString(object, "name", Trim);
++  if (name.has_value()) {
++    name = name->RemoveCharacters(IsCrLfOrTabChar);
++    if (name->length() == 0)
++      name = base::nullopt;
++  }
+   return name.has_value() ? *name : String();
+ }
+ 
+ String ManifestParser::ParseShortName(const JSONObject* object) {
+   base::Optional<String> short_name = ParseString(object, "short_name", Trim);
++  if (short_name.has_value()) {
++    short_name = short_name->RemoveCharacters(IsCrLfOrTabChar);
++    if (short_name->length() == 0)
++      short_name = base::nullopt;
++  }
+   return short_name.has_value() ? *short_name : String();
+ }
+ 
diff --git a/patches/chromium/render_widget_host_view_mac.patch b/patches/chromium/render_widget_host_view_mac.patch
index ec57de9210656..8ea35e8158912 100644
--- a/patches/chromium/render_widget_host_view_mac.patch
+++ b/patches/chromium/render_widget_host_view_mac.patch
@@ -10,10 +10,10 @@ kinds of utility windows. Similarly for `disableAutoHideCursor`.
 Additionally, disables usage of some private APIs in MAS builds.
 
 diff --git a/content/app_shim_remote_cocoa/render_widget_host_view_cocoa.mm b/content/app_shim_remote_cocoa/render_widget_host_view_cocoa.mm
-index f872e4ec47c157288980caafa11104af2d205abb..8cf97e1a4aa6ed95bbc6427877ec96c6200dc7f2 100644
+index f872e4ec47c157288980caafa11104af2d205abb..4f5c251da5904e1e478f3420a571b2edd8427486 100644
 --- a/content/app_shim_remote_cocoa/render_widget_host_view_cocoa.mm
 +++ b/content/app_shim_remote_cocoa/render_widget_host_view_cocoa.mm
-@@ -154,6 +154,11 @@ void ExtractUnderlines(NSAttributedString* string,
+@@ -154,6 +154,15 @@ void ExtractUnderlines(NSAttributedString* string,
  
  }  // namespace
  
@@ -21,11 +21,15 @@ index f872e4ec47c157288980caafa11104af2d205abb..8cf97e1a4aa6ed95bbc6427877ec96c6
 +- (BOOL)acceptsFirstMouse;
 +- (BOOL)disableAutoHideCursor;
 +@end
++
++@interface NSView (ElectronCustomMethods)
++- (BOOL)shouldIgnoreMouseEvent;
++@end
 +
  // These are not documented, so use only after checking -respondsToSelector:.
  @interface NSApplication (UndocumentedSpeechMethods)
  - (void)speakString:(NSString*)string;
-@@ -573,6 +578,9 @@ void ExtractUnderlines(NSAttributedString* string,
+@@ -573,6 +582,9 @@ void ExtractUnderlines(NSAttributedString* string,
  }
  
  - (BOOL)acceptsFirstMouse:(NSEvent*)theEvent {
@@ -35,7 +39,16 @@ index f872e4ec47c157288980caafa11104af2d205abb..8cf97e1a4aa6ed95bbc6427877ec96c6
    return [self acceptsMouseEventsWhenInactive];
  }
  
-@@ -990,6 +998,10 @@ void ExtractUnderlines(NSAttributedString* string,
+@@ -648,6 +660,8 @@ void ExtractUnderlines(NSAttributedString* string,
+   // its parent view.
+   BOOL hitSelf = NO;
+   while (view) {
++    if ([view respondsToSelector:@selector(shouldIgnoreMouseEvent)] && ![view shouldIgnoreMouseEvent])
++      return NO;
+     if (view == self)
+       hitSelf = YES;
+     if ([view isKindOfClass:[self class]] && ![view isEqual:self] &&
+@@ -990,6 +1004,10 @@ void ExtractUnderlines(NSAttributedString* string,
                                eventType == NSKeyDown &&
                                !(modifierFlags & NSCommandKeyMask);
  
@@ -46,7 +59,7 @@ index f872e4ec47c157288980caafa11104af2d205abb..8cf97e1a4aa6ed95bbc6427877ec96c6
    // We only handle key down events and just simply forward other events.
    if (eventType != NSKeyDown) {
      _hostHelper->ForwardKeyboardEvent(event, latency_info);
-@@ -1766,9 +1778,11 @@ void ExtractUnderlines(NSAttributedString* string,
+@@ -1766,9 +1784,11 @@ void ExtractUnderlines(NSAttributedString* string,
  // Since this implementation doesn't have to wait any IPC calls, this doesn't
  // make any key-typing jank. --hbono 7/23/09
  //
@@ -58,7 +71,7 @@ index f872e4ec47c157288980caafa11104af2d205abb..8cf97e1a4aa6ed95bbc6427877ec96c6
  
  - (NSArray*)validAttributesForMarkedText {
    // This code is just copied from WebKit except renaming variables.
-@@ -1777,7 +1791,10 @@ extern NSString* NSTextInputReplacementRangeAttributeName;
+@@ -1777,7 +1797,10 @@ extern NSString* NSTextInputReplacementRangeAttributeName;
          initWithObjects:NSUnderlineStyleAttributeName,
                          NSUnderlineColorAttributeName,
                          NSMarkedClauseSegmentAttributeName,
diff --git a/patches/chromium/replace_std_vector_with_base_observerlist_to_support_container.patch b/patches/chromium/replace_std_vector_with_base_observerlist_to_support_container.patch
new file mode 100644
index 0000000000000..d7edab9e08864
--- /dev/null
+++ b/patches/chromium/replace_std_vector_with_base_observerlist_to_support_container.patch
@@ -0,0 +1,144 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Andrey Belenko <andrey.belenko@gmail.com>
+Date: Tue, 18 May 2021 23:22:53 +0200
+Subject: Replace std::vector with base::ObserverList to support container
+ modification while iterating
+
+TaskTracker saves list of viewers in vector, that needs to be notified
+when distillation is completed. At the time of notifying the viewers,
+we are indirectly erasing viewers from vector while iterating.
+
+This is causing container-overflow in asan build when vector has more
+than one viewer while notifying.
+
+This change is to replace vector with ObserverList that can be modified
+during iteration without invalidating the iterator.
+
+(cherry picked from commit be19f42dab0706d5fdd74acd6eaa424e9277e9c4)
+
+Bug: 1203590
+Change-Id: I7c7b8237584c48c9ebc2639b9268a6a78c2db4b2
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2856118
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2883743
+
+diff --git a/base/observer_list.h b/base/observer_list.h
+index 52c8fad0d2a0a24e4daa52ec5659906085660b77..536e0bcd846e3cb9f38e28e61865aad7b7e04a25 100644
+--- a/base/observer_list.h
++++ b/base/observer_list.h
+@@ -272,6 +272,7 @@ class ObserverList {
+       NOTREACHED() << "Observers can only be added once!";
+       return;
+     }
++    observers_count_++;
+     observers_.emplace_back(ObserverStorageType(obs));
+   }
+ 
+@@ -284,7 +285,8 @@ class ObserverList {
+                      [obs](const auto& o) { return o.IsEqual(obs); });
+     if (it == observers_.end())
+       return;
+-
++    if (!it->IsMarkedForRemoval())
++      observers_count_--;
+     if (live_iterators_.empty()) {
+       observers_.erase(it);
+     } else {
+@@ -314,8 +316,12 @@ class ObserverList {
+       for (auto& observer : observers_)
+         observer.MarkForRemoval();
+     }
++
++    observers_count_ = 0;
+   }
+ 
++  bool empty() const { return !observers_count_; }
++
+   bool might_have_observers() const { return !observers_.empty(); }
+ 
+  private:
+@@ -334,6 +340,8 @@ class ObserverList {
+ 
+   base::LinkedList<internal::WeakLinkNode<ObserverList>> live_iterators_;
+ 
++  size_t observers_count_{0};
++
+   const ObserverListPolicy policy_;
+ 
+   SEQUENCE_CHECKER(iteration_sequence_checker_);
+diff --git a/components/dom_distiller/core/task_tracker.cc b/components/dom_distiller/core/task_tracker.cc
+index e66a62c4091e44183253ba7221db6dedcca4a1a2..f22c88967bc7d7b1a32339657b5fc2bf8248bbde 100644
+--- a/components/dom_distiller/core/task_tracker.cc
++++ b/components/dom_distiller/core/task_tracker.cc
+@@ -85,7 +85,7 @@ void TaskTracker::AddSaveCallback(SaveCallback callback) {
+ 
+ std::unique_ptr<ViewerHandle> TaskTracker::AddViewer(
+     ViewRequestDelegate* delegate) {
+-  viewers_.push_back(delegate);
++  viewers_.AddObserver(delegate);
+   if (content_ready_) {
+     // Distillation for this task has already completed, and so the delegate can
+     // be immediately told of the result.
+@@ -115,7 +115,7 @@ bool TaskTracker::HasUrl(const GURL& url) const {
+ }
+ 
+ void TaskTracker::RemoveViewer(ViewRequestDelegate* delegate) {
+-  base::Erase(viewers_, delegate);
++  viewers_.RemoveObserver(delegate);
+   if (viewers_.empty()) {
+     MaybeCancel();
+   }
+@@ -219,8 +219,8 @@ void TaskTracker::DistilledArticleReady(
+ }
+ 
+ void TaskTracker::NotifyViewersAndCallbacks() {
+-  for (auto* viewer : viewers_) {
+-    NotifyViewer(viewer);
++  for (auto& viewer : viewers_) {
++    NotifyViewer(&viewer);
+   }
+ 
+   // Already inside a callback run SaveCallbacks directly.
+@@ -242,8 +242,8 @@ void TaskTracker::DoSaveCallbacks(bool success) {
+ 
+ void TaskTracker::OnArticleDistillationUpdated(
+     const ArticleDistillationUpdate& article_update) {
+-  for (auto* viewer : viewers_) {
+-    viewer->OnArticleUpdated(article_update);
++  for (auto& viewer : viewers_) {
++    viewer.OnArticleUpdated(article_update);
+   }
+ }
+ 
+diff --git a/components/dom_distiller/core/task_tracker.h b/components/dom_distiller/core/task_tracker.h
+index 484145cf7d176fd0c3f2fa73da4cf94c23cc0bda..cc13e7272923ec3de52bcea186fdc30391c8cd2b 100644
+--- a/components/dom_distiller/core/task_tracker.h
++++ b/components/dom_distiller/core/task_tracker.h
+@@ -11,6 +11,7 @@
+ #include "base/bind.h"
+ #include "base/callback.h"
+ #include "base/memory/weak_ptr.h"
++#include "base/observer_list.h"
+ #include "components/dom_distiller/core/article_distillation_update.h"
+ #include "components/dom_distiller/core/article_entry.h"
+ #include "components/dom_distiller/core/distiller.h"
+@@ -40,9 +41,9 @@ class ViewerHandle {
+ 
+ // Interface for a DOM distiller entry viewer. Implement this to make a view
+ // request and receive the data for an entry when it becomes available.
+-class ViewRequestDelegate {
++class ViewRequestDelegate : public base::CheckedObserver {
+  public:
+-  virtual ~ViewRequestDelegate() = default;
++  ~ViewRequestDelegate() override = default;
+ 
+   // Called when the distilled article contents are available. The
+   // DistilledArticleProto is owned by a TaskTracker instance and is invalidated
+@@ -140,7 +141,7 @@ class TaskTracker {
+   std::vector<SaveCallback> save_callbacks_;
+   // A ViewRequestDelegate will be added to this list when a view request is
+   // made and removed when the corresponding ViewerHandle is destroyed.
+-  std::vector<ViewRequestDelegate*> viewers_;
++  base::ObserverList<ViewRequestDelegate> viewers_;
+ 
+   std::unique_ptr<Distiller> distiller_;
+   bool blob_fetcher_running_;
diff --git a/patches/chromium/stop_using_raw_webcontents_ptr_in_dragdownloadfile.patch b/patches/chromium/stop_using_raw_webcontents_ptr_in_dragdownloadfile.patch
new file mode 100644
index 0000000000000..df0549b58ff45
--- /dev/null
+++ b/patches/chromium/stop_using_raw_webcontents_ptr_in_dragdownloadfile.patch
@@ -0,0 +1,140 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Min Qin <qinmin@chromium.org>
+Date: Fri, 12 Feb 2021 22:45:08 +0000
+Subject: Stop using raw WebContents ptr in DragDownloadFile
+
+BUG=1172192
+
+(cherry picked from commit 99dc876a13df19f3512bcfb97e794ab5d1b28905)
+
+Change-Id: Ie029713553ff88c1e271db1c84396e1ddda19286
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2666189
+Reviewed-by: Xing Liu <xingliu@chromium.org>
+Commit-Queue: Min Qin <qinmin@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#849692}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2692927
+Reviewed-by: Shakti Sahu <shaktisahu@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4324@{#2200}
+Cr-Branched-From: c73b5a651d37a6c4d0b8e3262cc4015a5579c6c8-refs/heads/master@{#827102}
+
+diff --git a/content/browser/download/drag_download_file.cc b/content/browser/download/drag_download_file.cc
+index 05c110adcbdebd67adc58a5e17b46dbd50ccc220..5dc8fe2214f6b5ef16445196e54ccb668c9fb5ef 100644
+--- a/content/browser/download/drag_download_file.cc
++++ b/content/browser/download/drag_download_file.cc
+@@ -37,15 +37,17 @@ class DragDownloadFile::DragDownloadFileUI
+   DragDownloadFileUI(const GURL& url,
+                      const Referrer& referrer,
+                      const std::string& referrer_encoding,
+-                     WebContents* web_contents,
++                     int render_process_id,
++                     int render_frame_id,
+                      OnCompleted on_completed)
+       : on_completed_(std::move(on_completed)),
+         url_(url),
+         referrer_(referrer),
+         referrer_encoding_(referrer_encoding),
+-        web_contents_(web_contents) {
++        render_process_id_(render_process_id),
++        render_frame_id_(render_frame_id) {
+     DCHECK(on_completed_);
+-    DCHECK(web_contents_);
++    DCHECK_GE(render_frame_id_, 0);
+     // May be called on any thread.
+     // Do not call weak_ptr_factory_.GetWeakPtr() outside the UI thread.
+   }
+@@ -54,6 +56,10 @@ class DragDownloadFile::DragDownloadFileUI
+                         const base::FilePath& file_path) {
+     DCHECK_CURRENTLY_ON(BrowserThread::UI);
+ 
++    RenderFrameHost* host =
++        RenderFrameHost::FromID(render_process_id_, render_frame_id_);
++    if (!host)
++      return;
+     // TODO(https://crbug.com/614134) This should use the frame actually
+     // containing the link being dragged rather than the main frame of the tab.
+     net::NetworkTrafficAnnotationTag traffic_annotation =
+@@ -79,9 +85,9 @@ class DragDownloadFile::DragDownloadFileUI
+             }
+           }
+         })");
+-    std::unique_ptr<download::DownloadUrlParameters> params(
+-        DownloadRequestUtils::CreateDownloadForWebContentsMainFrame(
+-            web_contents_, url_, traffic_annotation));
++    auto params = std::make_unique<download::DownloadUrlParameters>(
++        url_, render_process_id_, host->GetRenderViewHost()->GetRoutingID(),
++        render_frame_id_, traffic_annotation);
+     params->set_referrer(referrer_.url);
+     params->set_referrer_policy(
+         Referrer::ReferrerPolicyForUrlRequest(referrer_.policy));
+@@ -91,7 +97,7 @@ class DragDownloadFile::DragDownloadFileUI
+     params->set_file_path(file_path);
+     params->set_file(std::move(file));  // Nulls file.
+     params->set_download_source(download::DownloadSource::DRAG_AND_DROP);
+-    BrowserContext::GetDownloadManager(web_contents_->GetBrowserContext())
++    BrowserContext::GetDownloadManager(host->GetBrowserContext())
+         ->DownloadUrl(std::move(params));
+   }
+ 
+@@ -165,7 +171,8 @@ class DragDownloadFile::DragDownloadFileUI
+   GURL url_;
+   Referrer referrer_;
+   std::string referrer_encoding_;
+-  WebContents* web_contents_;
++  int render_process_id_;
++  int render_frame_id_;
+   download::DownloadItem* download_item_ = nullptr;
+ 
+   // Only used in the callback from DownloadManager::DownloadUrl().
+@@ -182,8 +189,10 @@ DragDownloadFile::DragDownloadFile(const base::FilePath& file_path,
+                                    WebContents* web_contents)
+     : file_path_(file_path), file_(std::move(file)) {
+   DCHECK_CURRENTLY_ON(BrowserThread::UI);
++  RenderFrameHost* host = web_contents->GetMainFrame();
+   drag_ui_ = new DragDownloadFileUI(
+-      url, referrer, referrer_encoding, web_contents,
++      url, referrer, referrer_encoding, host->GetProcess()->GetID(),
++      host->GetRoutingID(),
+       base::BindOnce(&DragDownloadFile::DownloadCompleted,
+                      weak_ptr_factory_.GetWeakPtr()));
+   DCHECK(!file_path_.empty());
+diff --git a/content/browser/download/drag_download_file_browsertest.cc b/content/browser/download/drag_download_file_browsertest.cc
+index 800891a6df4f0d79f1dd0a9cf89b47b882d0f3de..88e248e49898ef55eff694d0979e01bbe69aa2f6 100644
+--- a/content/browser/download/drag_download_file_browsertest.cc
++++ b/content/browser/download/drag_download_file_browsertest.cc
+@@ -21,6 +21,7 @@
+ #include "content/public/test/content_browser_test.h"
+ #include "content/public/test/content_browser_test_utils.h"
+ #include "content/public/test/download_test_observer.h"
++#include "content/public/test/test_utils.h"
+ #include "content/shell/browser/shell.h"
+ #include "content/shell/browser/shell_browser_context.h"
+ #include "content/shell/browser/shell_download_manager_delegate.h"
+@@ -129,6 +130,28 @@ IN_PROC_BROWSER_TEST_F(DragDownloadFileTest, DragDownloadFileTest_Complete) {
+   RunUntilSucceed();
+ }
+ 
++IN_PROC_BROWSER_TEST_F(DragDownloadFileTest, DragDownloadFileTest_ClosePage) {
++  base::FilePath name(
++      downloads_directory().AppendASCII("DragDownloadFileTest_Complete.txt"));
++  GURL url = embedded_test_server()->GetURL("/download/download-test.lib");
++  Referrer referrer;
++  std::string referrer_encoding;
++  auto file = std::make_unique<DragDownloadFile>(name, base::File(), url,
++                                                 referrer, referrer_encoding,
++                                                 shell()->web_contents());
++  scoped_refptr<MockDownloadFileObserver> observer(
++      new MockDownloadFileObserver());
++  ON_CALL(*observer.get(), OnDownloadAborted())
++      .WillByDefault(InvokeWithoutArgs(this, &DragDownloadFileTest::FailFast));
++  DownloadManager* manager = BrowserContext::GetDownloadManager(
++      shell()->web_contents()->GetBrowserContext());
++  file->Start(observer.get());
++  shell()->web_contents()->Close();
++  RunAllTasksUntilIdle();
++  std::vector<download::DownloadItem*> downloads;
++  manager->GetAllDownloads(&downloads);
++  ASSERT_EQ(0u, downloads.size());
++}
+ // TODO(benjhayden): Test Stop().
+ 
+ }  // namespace content
diff --git a/patches/chromium/support_mixed_sandbox_with_zygote.patch b/patches/chromium/support_mixed_sandbox_with_zygote.patch
index b7ddfb7d03b16..e23669628f769 100644
--- a/patches/chromium/support_mixed_sandbox_with_zygote.patch
+++ b/patches/chromium/support_mixed_sandbox_with_zygote.patch
@@ -22,10 +22,10 @@ However, the patch would need to be reviewed by the security team, as it
 does touch a security-sensitive class.
 
 diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
-index a2fc5326f7ecc3d0bd57587f78d0e3231c5a49ac..e5a82f46cd58b0da9959930ee85303e4a1530425 100644
+index f0cce20cc36b12758f3252dc935d2437df76fb74..305ffb2b7a1830c93f97450b3b79d5448cb9fad4 100644
 --- a/content/browser/renderer_host/render_process_host_impl.cc
 +++ b/content/browser/renderer_host/render_process_host_impl.cc
-@@ -414,6 +414,11 @@ class RendererSandboxedProcessLauncherDelegate
+@@ -413,6 +413,11 @@ class RendererSandboxedProcessLauncherDelegate
    {
    }
  
@@ -37,7 +37,7 @@ index a2fc5326f7ecc3d0bd57587f78d0e3231c5a49ac..e5a82f46cd58b0da9959930ee85303e4
    ~RendererSandboxedProcessLauncherDelegate() override {}
  
  #if defined(OS_WIN)
-@@ -435,6 +440,9 @@ class RendererSandboxedProcessLauncherDelegate
+@@ -434,6 +439,9 @@ class RendererSandboxedProcessLauncherDelegate
  
  #if BUILDFLAG(USE_ZYGOTE_HANDLE)
    ZygoteHandle GetZygote() override {
@@ -47,7 +47,7 @@ index a2fc5326f7ecc3d0bd57587f78d0e3231c5a49ac..e5a82f46cd58b0da9959930ee85303e4
      const base::CommandLine& browser_command_line =
          *base::CommandLine::ForCurrentProcess();
      base::CommandLine::StringType renderer_prefix =
-@@ -449,10 +457,13 @@ class RendererSandboxedProcessLauncherDelegate
+@@ -448,10 +456,13 @@ class RendererSandboxedProcessLauncherDelegate
      return service_manager::SandboxType::kRenderer;
    }
  
@@ -62,7 +62,7 @@ index a2fc5326f7ecc3d0bd57587f78d0e3231c5a49ac..e5a82f46cd58b0da9959930ee85303e4
  };
  
  const char kSessionStorageHolderKey[] = "kSessionStorageHolderKey";
-@@ -1859,11 +1870,18 @@ bool RenderProcessHostImpl::Init() {
+@@ -1858,11 +1869,18 @@ bool RenderProcessHostImpl::Init() {
        cmd_line->PrependWrapper(renderer_prefix);
      AppendRendererCommandLine(cmd_line.get());
  
diff --git a/patches/chromium/ui_check_that_unpremultiply_is_passed_a_32bpp_image.patch b/patches/chromium/ui_check_that_unpremultiply_is_passed_a_32bpp_image.patch
new file mode 100644
index 0000000000000..33c5f297ea19d
--- /dev/null
+++ b/patches/chromium/ui_check_that_unpremultiply_is_passed_a_32bpp_image.patch
@@ -0,0 +1,36 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Scott Violet <sky@chromium.org>
+Date: Fri, 13 Nov 2020 20:47:38 +0000
+Subject: ui: CHECK that UnPremultiply is passed a 32bpp image
+
+To do otherwise results in accessing random data.
+
+BUG=1147430
+TEST=none
+
+(cherry picked from commit 1f673896837ab8c687d93fec604c96c78c7f679b)
+
+Change-Id: Icedacbaac64cad3fc903e6423c6f9aad8c1e8cb5
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2531118
+Commit-Queue: danakj <danakj@chromium.org>
+Reviewed-by: danakj <danakj@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#826300}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2538047
+Reviewed-by: Scott Violet <sky@chromium.org>
+Commit-Queue: Scott Violet <sky@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1452}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/ui/gfx/skbitmap_operations.cc b/ui/gfx/skbitmap_operations.cc
+index c08079f585b033849c744838c1db7a05ef729450..30372e849213d0446ac7edd72452782606bf938f 100644
+--- a/ui/gfx/skbitmap_operations.cc
++++ b/ui/gfx/skbitmap_operations.cc
+@@ -630,6 +630,8 @@ SkBitmap SkBitmapOperations::UnPreMultiply(const SkBitmap& bitmap) {
+     return bitmap;
+   if (bitmap.isOpaque())
+     return bitmap;
++  // It's expected this code is called with a 32bpp image.
++  CHECK_EQ(kN32_SkColorType, bitmap.colorType());
+ 
+   const SkImageInfo& opaque_info =
+       bitmap.info().makeAlphaType(kOpaque_SkAlphaType);
diff --git a/patches/chromium/use_electron_resources_in_icon_reader_service.patch b/patches/chromium/use_electron_resources_in_icon_reader_service.patch
deleted file mode 100644
index 672fdbf8029d6..0000000000000
--- a/patches/chromium/use_electron_resources_in_icon_reader_service.patch
+++ /dev/null
@@ -1,21 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Deepak Mohan <hop2deep@gmail.com>
-Date: Wed, 24 Jun 2020 21:00:00 -0700
-Subject: use electron resources in icon_reader_service
-
-Without this, the ID for IDS_UTILITY_PROCESS_UTILITY_WIN_NAME will be wrong on windows
-and cause a DCHECK() failure
-
-diff --git a/chrome/browser/win/icon_reader_service.cc b/chrome/browser/win/icon_reader_service.cc
-index 721e1a863cc6925908f8343002df056f2373bf0b..10b2a95162541a8ff4d010c7be864f3f41dae378 100644
---- a/chrome/browser/win/icon_reader_service.cc
-+++ b/chrome/browser/win/icon_reader_service.cc
-@@ -5,7 +5,7 @@
- #include "chrome/browser/win/icon_reader_service.h"
- 
- #include "chrome/browser/service_sandbox_type.h"
--#include "chrome/grit/generated_resources.h"
-+#include "electron/grit/electron_resources.h"
- #include "content/public/browser/service_process_host.h"
- 
- mojo::Remote<chrome::mojom::UtilReadIcon> LaunchIconReaderInstance() {
diff --git a/patches/chromium/use_electron_resources_in_pdf_util.patch b/patches/chromium/use_electron_resources_in_pdf_util.patch
deleted file mode 100644
index 7d028ee0fcf26..0000000000000
--- a/patches/chromium/use_electron_resources_in_pdf_util.patch
+++ /dev/null
@@ -1,22 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Jeremy Apthorp <nornagon@nornagon.net>
-Date: Mon, 10 Feb 2020 10:37:48 -0800
-Subject: use electron resources in pdf_util
-
-Without this, the ID for IDR_PDF_MANIFEST will be wrong on linux
-and cause a DCHECK(), since the resource will be loaded as an empty
-string.
-
-diff --git a/chrome/browser/pdf/pdf_extension_util.cc b/chrome/browser/pdf/pdf_extension_util.cc
-index 9fd9791fd923d6c5e741cb7dc064ababf9a7995a..0a5534f2f09224196971076794daa3c805c91606 100644
---- a/chrome/browser/pdf/pdf_extension_util.cc
-+++ b/chrome/browser/pdf/pdf_extension_util.cc
-@@ -8,7 +8,7 @@
- #include "base/values.h"
- #include "chrome/browser/browser_process.h"
- #include "chrome/common/chrome_content_client.h"
--#include "chrome/grit/browser_resources.h"
-+#include "electron/grit/electron_resources.h"
- #include "components/strings/grit/components_strings.h"
- #include "components/zoom/page_zoom_constants.h"
- #include "pdf/pdf_features.h"
diff --git a/patches/chromium/use_idtype_for_permission_change_subscriptions.patch b/patches/chromium/use_idtype_for_permission_change_subscriptions.patch
new file mode 100644
index 0000000000000..a2cdffc236f2f
--- /dev/null
+++ b/patches/chromium/use_idtype_for_permission_change_subscriptions.patch
@@ -0,0 +1,951 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jana Grill <janagrill@google.com>
+Date: Thu, 15 Apr 2021 19:35:42 +0000
+Subject: Use IDType for permission change subscriptions.
+
+(cherry picked from commit ad1489b7c3ed705fc623cdffdc292324be9fcbfa)
+
+Bug: 1025683
+Change-Id: I3b44ba7833138e8a657a4192e1a36c978695db32
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2791431
+Reviewed-by: Richard Coles <torne@chromium.org>
+Reviewed-by: Yuchen Liu <yucliu@chromium.org>
+Reviewed-by: Nasko Oskov <nasko@chromium.org>
+Reviewed-by: Andrey Kosyakov <caseq@chromium.org>
+Reviewed-by: Fabrice de Gans-Riberi <fdegans@chromium.org>
+Reviewed-by: Arthur Sonzogni <arthursonzogni@chromium.org>
+Reviewed-by: Illia Klimov <elklm@google.com>
+Auto-Submit: Balazs Engedy <engedy@chromium.org>
+Commit-Queue: Balazs Engedy <engedy@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#867999}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2817980
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
+Commit-Queue: Achuith Bhandarkar <achuith@chromium.org>
+Owners-Override: Achuith Bhandarkar <achuith@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4240@{#1607}
+Cr-Branched-From: f297677702651916bbf65e59c0d4bbd4ce57d1ee-refs/heads/master@{#800218}
+
+diff --git a/android_webview/browser/aw_permission_manager.cc b/android_webview/browser/aw_permission_manager.cc
+index bedb16b046d45b257e28e29e410afe43f5c8817c..c020e9668cbd2de9d36d2e160a07e324a2510d6b 100644
+--- a/android_webview/browser/aw_permission_manager.cc
++++ b/android_webview/browser/aw_permission_manager.cc
+@@ -469,16 +469,17 @@ PermissionStatus AwPermissionManager::GetPermissionStatusForFrame(
+           .GetOrigin());
+ }
+ 
+-int AwPermissionManager::SubscribePermissionStatusChange(
++AwPermissionManager::SubscriptionId
++AwPermissionManager::SubscribePermissionStatusChange(
+     PermissionType permission,
+     content::RenderFrameHost* render_frame_host,
+     const GURL& requesting_origin,
+     base::RepeatingCallback<void(PermissionStatus)> callback) {
+-  return content::PermissionController::kNoPendingOperation;
++  return SubscriptionId();
+ }
+ 
+ void AwPermissionManager::UnsubscribePermissionStatusChange(
+-    int subscription_id) {}
++    SubscriptionId subscription_id) {}
+ 
+ void AwPermissionManager::CancelPermissionRequest(int request_id) {
+   PendingRequest* pending_request = pending_requests_.Lookup(request_id);
+diff --git a/android_webview/browser/aw_permission_manager.h b/android_webview/browser/aw_permission_manager.h
+index d9670cac33b84016568e9693b62e83c5e7ee0969..7439e78199783b8ebe2c303ebebf0e1cf62dc718 100644
+--- a/android_webview/browser/aw_permission_manager.h
++++ b/android_webview/browser/aw_permission_manager.h
+@@ -49,13 +49,14 @@ class AwPermissionManager : public content::PermissionControllerDelegate {
+       content::PermissionType permission,
+       content::RenderFrameHost* render_frame_host,
+       const GURL& requesting_origin) override;
+-  int SubscribePermissionStatusChange(
++  SubscriptionId SubscribePermissionStatusChange(
+       content::PermissionType permission,
+       content::RenderFrameHost* render_frame_host,
+       const GURL& requesting_origin,
+       base::RepeatingCallback<void(blink::mojom::PermissionStatus)> callback)
+       override;
+-  void UnsubscribePermissionStatusChange(int subscription_id) override;
++  void UnsubscribePermissionStatusChange(
++      SubscriptionId subscription_id) override;
+ 
+  protected:
+   void CancelPermissionRequest(int request_id);
+diff --git a/chrome/browser/permissions/permission_manager_browsertest.cc b/chrome/browser/permissions/permission_manager_browsertest.cc
+index 440203ce6eca40070e09eae8bafe2a50bea75060..d48e6d85611b2ea4560f56d5e09fafa3a3453e7a 100644
+--- a/chrome/browser/permissions/permission_manager_browsertest.cc
++++ b/chrome/browser/permissions/permission_manager_browsertest.cc
+@@ -49,13 +49,13 @@ class SubscriptionInterceptingPermissionManager
+     callback_ = std::move(callback);
+   }
+ 
+-  int SubscribePermissionStatusChange(
++  SubscriptionId SubscribePermissionStatusChange(
+       content::PermissionType permission,
+       content::RenderFrameHost* render_frame_host,
+       const GURL& requesting_origin,
+       base::RepeatingCallback<void(blink::mojom::PermissionStatus)> callback)
+       override {
+-    int result =
++    SubscriptionId result =
+         permissions::PermissionManager::SubscribePermissionStatusChange(
+             permission, render_frame_host, requesting_origin, callback);
+     std::move(callback_).Run();
+diff --git a/chromecast/browser/cast_permission_manager.cc b/chromecast/browser/cast_permission_manager.cc
+index b358fc3bdb5c6af93a1e6568a667049574367741..b3a226dabff062e591fee38682409dec5e38a213 100644
+--- a/chromecast/browser/cast_permission_manager.cc
++++ b/chromecast/browser/cast_permission_manager.cc
+@@ -63,17 +63,17 @@ CastPermissionManager::GetPermissionStatusForFrame(
+   return blink::mojom::PermissionStatus::GRANTED;
+ }
+ 
+-int CastPermissionManager::SubscribePermissionStatusChange(
++CastPermissionManager::SubscriptionId
++CastPermissionManager::SubscribePermissionStatusChange(
+     content::PermissionType permission,
+     content::RenderFrameHost* render_frame_host,
+     const GURL& requesting_origin,
+     base::RepeatingCallback<void(blink::mojom::PermissionStatus)> callback) {
+-  return content::PermissionController::kNoPendingOperation;
++  return SubscriptionId();
+ }
+ 
+ void CastPermissionManager::UnsubscribePermissionStatusChange(
+-    int subscription_id) {
+-}
++    SubscriptionId subscription_id) {}
+ 
+ }  // namespace shell
+ }  // namespace chromecast
+diff --git a/chromecast/browser/cast_permission_manager.h b/chromecast/browser/cast_permission_manager.h
+index 564ac2b304596027cf7096892dfaf9796500419c..f9da64c6110307cf9912e897f87fcbb2ca123d75 100644
+--- a/chromecast/browser/cast_permission_manager.h
++++ b/chromecast/browser/cast_permission_manager.h
+@@ -43,13 +43,14 @@ class CastPermissionManager : public content::PermissionControllerDelegate {
+       content::PermissionType permission,
+       content::RenderFrameHost* render_frame_host,
+       const GURL& requesting_origin) override;
+-  int SubscribePermissionStatusChange(
++  SubscriptionId SubscribePermissionStatusChange(
+       content::PermissionType permission,
+       content::RenderFrameHost* render_frame_host,
+       const GURL& requesting_origin,
+       base::RepeatingCallback<void(blink::mojom::PermissionStatus)> callback)
+       override;
+-  void UnsubscribePermissionStatusChange(int subscription_id) override;
++  void UnsubscribePermissionStatusChange(
++      SubscriptionId subscription_id) override;
+ 
+  private:
+   DISALLOW_COPY_AND_ASSIGN(CastPermissionManager);
+diff --git a/components/permissions/permission_manager.cc b/components/permissions/permission_manager.cc
+index a9566441647f0e8527a6b9603f663f66e49b2abb..bdf639f49a987eb2d7ae31346dc01b85dac57eaa 100644
+--- a/components/permissions/permission_manager.cc
++++ b/components/permissions/permission_manager.cc
+@@ -542,14 +542,15 @@ bool PermissionManager::IsPermissionOverridableByDevTools(
+                                                             origin->GetURL());
+ }
+ 
+-int PermissionManager::SubscribePermissionStatusChange(
++PermissionManager::SubscriptionId
++PermissionManager::SubscribePermissionStatusChange(
+     PermissionType permission,
+     content::RenderFrameHost* render_frame_host,
+     const GURL& requesting_origin,
+     base::RepeatingCallback<void(PermissionStatus)> callback) {
+   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+   if (is_shutting_down_)
+-    return 0;
++    return SubscriptionId();
+ 
+   if (subscriptions_.IsEmpty())
+     PermissionsClient::Get()
+@@ -586,16 +587,20 @@ int PermissionManager::SubscribePermissionStatusChange(
+   subscription->callback =
+       base::BindRepeating(&SubscriptionCallbackWrapper, std::move(callback));
+ 
+-  return subscriptions_.Add(std::move(subscription));
++  auto id = subscription_id_generator_.GenerateNextId();
++  subscriptions_.AddWithID(std::move(subscription), id);
++  return id;
+ }
+ 
+-void PermissionManager::UnsubscribePermissionStatusChange(int subscription_id) {
++void PermissionManager::UnsubscribePermissionStatusChange(
++    SubscriptionId subscription_id) {
+   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+   if (is_shutting_down_)
+     return;
+ 
+-  // Whether |subscription_id| is known will be checked by the Remove() call.
+-  subscriptions_.Remove(subscription_id);
++  if (subscriptions_.Lookup(subscription_id)) {
++    subscriptions_.Remove(subscription_id);
++  }
+ 
+   if (subscriptions_.IsEmpty()) {
+     PermissionsClient::Get()
+diff --git a/components/permissions/permission_manager.h b/components/permissions/permission_manager.h
+index d11fb4b2c4a1a360ae01154995091439e13bd9a0..19d29dde0392adff318e82bd1c3091c4e1dcd926 100644
+--- a/components/permissions/permission_manager.h
++++ b/components/permissions/permission_manager.h
+@@ -114,13 +114,14 @@ class PermissionManager : public KeyedService,
+   bool IsPermissionOverridableByDevTools(
+       content::PermissionType permission,
+       const base::Optional<url::Origin>& origin) override;
+-  int SubscribePermissionStatusChange(
++  SubscriptionId SubscribePermissionStatusChange(
+       content::PermissionType permission,
+       content::RenderFrameHost* render_frame_host,
+       const GURL& requesting_origin,
+       base::RepeatingCallback<void(blink::mojom::PermissionStatus)> callback)
+       override;
+-  void UnsubscribePermissionStatusChange(int subscription_id) override;
++  void UnsubscribePermissionStatusChange(
++      SubscriptionId subscription_id) override;
+ 
+   // TODO(raymes): Rather than exposing this, use the denial reason from
+   // GetPermissionStatus in callers to determine whether a permission is
+@@ -153,7 +154,8 @@ class PermissionManager : public KeyedService,
+   class PermissionResponseCallback;
+ 
+   struct Subscription;
+-  using SubscriptionsMap = base::IDMap<std::unique_ptr<Subscription>>;
++  using SubscriptionsMap =
++      base::IDMap<std::unique_ptr<Subscription>, SubscriptionId>;
+ 
+   PermissionContextBase* GetPermissionContext(ContentSettingsType type);
+ 
+@@ -186,6 +188,7 @@ class PermissionManager : public KeyedService,
+   content::BrowserContext* browser_context_;
+   PendingRequestsMap pending_requests_;
+   SubscriptionsMap subscriptions_;
++  SubscriptionId::Generator subscription_id_generator_;
+ 
+   PermissionContextMap permission_contexts_;
+   using ContentSettingsTypeOverrides =
+diff --git a/components/permissions/permission_manager_unittest.cc b/components/permissions/permission_manager_unittest.cc
+index ff5793acc907134fc486fcd5b9c20bf0cf2d960c..0070768b4a41e2890b89aba817fe24f6268272c1 100644
+--- a/components/permissions/permission_manager_unittest.cc
++++ b/components/permissions/permission_manager_unittest.cc
+@@ -325,7 +325,7 @@ TEST_F(PermissionManagerTest, SubscriptionDestroyedCleanlyWithoutUnsubscribe) {
+ }
+ 
+ TEST_F(PermissionManagerTest, SubscribeUnsubscribeAfterShutdown) {
+-  int subscription_id =
++  content::PermissionControllerDelegate::SubscriptionId subscription_id =
+       GetPermissionControllerDelegate()->SubscribePermissionStatusChange(
+           PermissionType::GEOLOCATION, main_rfh(), url(),
+           base::Bind(&PermissionManagerTest::OnPermissionChange,
+@@ -340,7 +340,7 @@ TEST_F(PermissionManagerTest, SubscribeUnsubscribeAfterShutdown) {
+       subscription_id);
+ 
+   // Check that subscribe/unsubscribe after shutdown don't crash.
+-  int subscription2_id =
++  content::PermissionControllerDelegate::SubscriptionId subscription2_id =
+       GetPermissionControllerDelegate()->SubscribePermissionStatusChange(
+           PermissionType::GEOLOCATION, main_rfh(), url(),
+           base::Bind(&PermissionManagerTest::OnPermissionChange,
+@@ -351,7 +351,7 @@ TEST_F(PermissionManagerTest, SubscribeUnsubscribeAfterShutdown) {
+ }
+ 
+ TEST_F(PermissionManagerTest, SameTypeChangeNotifies) {
+-  int subscription_id =
++  content::PermissionControllerDelegate::SubscriptionId subscription_id =
+       GetPermissionControllerDelegate()->SubscribePermissionStatusChange(
+           PermissionType::GEOLOCATION, main_rfh(), url(),
+           base::Bind(&PermissionManagerTest::OnPermissionChange,
+@@ -369,7 +369,7 @@ TEST_F(PermissionManagerTest, SameTypeChangeNotifies) {
+ }
+ 
+ TEST_F(PermissionManagerTest, DifferentTypeChangeDoesNotNotify) {
+-  int subscription_id =
++  content::PermissionControllerDelegate::SubscriptionId subscription_id =
+       GetPermissionControllerDelegate()->SubscribePermissionStatusChange(
+           PermissionType::GEOLOCATION, main_rfh(), url(),
+           base::Bind(&PermissionManagerTest::OnPermissionChange,
+@@ -386,7 +386,7 @@ TEST_F(PermissionManagerTest, DifferentTypeChangeDoesNotNotify) {
+ }
+ 
+ TEST_F(PermissionManagerTest, ChangeAfterUnsubscribeDoesNotNotify) {
+-  int subscription_id =
++  content::PermissionControllerDelegate::SubscriptionId subscription_id =
+       GetPermissionControllerDelegate()->SubscribePermissionStatusChange(
+           PermissionType::GEOLOCATION, main_rfh(), url(),
+           base::Bind(&PermissionManagerTest::OnPermissionChange,
+@@ -403,7 +403,7 @@ TEST_F(PermissionManagerTest, ChangeAfterUnsubscribeDoesNotNotify) {
+ }
+ 
+ TEST_F(PermissionManagerTest, DifferentPrimaryUrlDoesNotNotify) {
+-  int subscription_id =
++  content::PermissionControllerDelegate::SubscriptionId subscription_id =
+       GetPermissionControllerDelegate()->SubscribePermissionStatusChange(
+           PermissionType::GEOLOCATION, main_rfh(), url(),
+           base::Bind(&PermissionManagerTest::OnPermissionChange,
+@@ -420,7 +420,7 @@ TEST_F(PermissionManagerTest, DifferentPrimaryUrlDoesNotNotify) {
+ }
+ 
+ TEST_F(PermissionManagerTest, DifferentSecondaryUrlDoesNotNotify) {
+-  int subscription_id =
++  content::PermissionControllerDelegate::SubscriptionId subscription_id =
+       GetPermissionControllerDelegate()->SubscribePermissionStatusChange(
+           PermissionType::GEOLOCATION, main_rfh(), url(),
+           base::Bind(&PermissionManagerTest::OnPermissionChange,
+@@ -437,7 +437,7 @@ TEST_F(PermissionManagerTest, DifferentSecondaryUrlDoesNotNotify) {
+ }
+ 
+ TEST_F(PermissionManagerTest, WildCardPatternNotifies) {
+-  int subscription_id =
++  content::PermissionControllerDelegate::SubscriptionId subscription_id =
+       GetPermissionControllerDelegate()->SubscribePermissionStatusChange(
+           PermissionType::GEOLOCATION, main_rfh(), url(),
+           base::Bind(&PermissionManagerTest::OnPermissionChange,
+@@ -458,7 +458,7 @@ TEST_F(PermissionManagerTest, ClearSettingsNotifies) {
+       url(), url(), ContentSettingsType::GEOLOCATION, std::string(),
+       CONTENT_SETTING_ALLOW);
+ 
+-  int subscription_id =
++  content::PermissionControllerDelegate::SubscriptionId subscription_id =
+       GetPermissionControllerDelegate()->SubscribePermissionStatusChange(
+           PermissionType::GEOLOCATION, main_rfh(), url(),
+           base::Bind(&PermissionManagerTest::OnPermissionChange,
+@@ -475,7 +475,7 @@ TEST_F(PermissionManagerTest, ClearSettingsNotifies) {
+ }
+ 
+ TEST_F(PermissionManagerTest, NewValueCorrectlyPassed) {
+-  int subscription_id =
++  content::PermissionControllerDelegate::SubscriptionId subscription_id =
+       GetPermissionControllerDelegate()->SubscribePermissionStatusChange(
+           PermissionType::GEOLOCATION, main_rfh(), url(),
+           base::Bind(&PermissionManagerTest::OnPermissionChange,
+@@ -497,7 +497,7 @@ TEST_F(PermissionManagerTest, ChangeWithoutPermissionChangeDoesNotNotify) {
+       url(), url(), ContentSettingsType::GEOLOCATION, std::string(),
+       CONTENT_SETTING_ALLOW);
+ 
+-  int subscription_id =
++  content::PermissionControllerDelegate::SubscriptionId subscription_id =
+       GetPermissionControllerDelegate()->SubscribePermissionStatusChange(
+           PermissionType::GEOLOCATION, main_rfh(), url(),
+           base::Bind(&PermissionManagerTest::OnPermissionChange,
+@@ -518,7 +518,7 @@ TEST_F(PermissionManagerTest, ChangesBackAndForth) {
+       url(), url(), ContentSettingsType::GEOLOCATION, std::string(),
+       CONTENT_SETTING_ASK);
+ 
+-  int subscription_id =
++  content::PermissionControllerDelegate::SubscriptionId subscription_id =
+       GetPermissionControllerDelegate()->SubscribePermissionStatusChange(
+           PermissionType::GEOLOCATION, main_rfh(), url(),
+           base::Bind(&PermissionManagerTest::OnPermissionChange,
+@@ -549,7 +549,7 @@ TEST_F(PermissionManagerTest, ChangesBackAndForthWorker) {
+       url(), url(), ContentSettingsType::GEOLOCATION, std::string(),
+       CONTENT_SETTING_ASK);
+ 
+-  int subscription_id =
++  content::PermissionControllerDelegate::SubscriptionId subscription_id =
+       GetPermissionControllerDelegate()->SubscribePermissionStatusChange(
+           PermissionType::GEOLOCATION, nullptr, url(),
+           base::Bind(&PermissionManagerTest::OnPermissionChange,
+@@ -576,7 +576,7 @@ TEST_F(PermissionManagerTest, ChangesBackAndForthWorker) {
+ }
+ 
+ TEST_F(PermissionManagerTest, SubscribeMIDIPermission) {
+-  int subscription_id =
++  content::PermissionControllerDelegate::SubscriptionId subscription_id =
+       GetPermissionControllerDelegate()->SubscribePermissionStatusChange(
+           PermissionType::MIDI, main_rfh(), url(),
+           base::Bind(&PermissionManagerTest::OnPermissionChange,
+@@ -796,7 +796,7 @@ TEST_F(PermissionManagerTest, SubscribeWithPermissionDelegation) {
+   content::RenderFrameHost* parent = main_rfh();
+   content::RenderFrameHost* child = AddChildRFH(parent, kOrigin2);
+ 
+-  int subscription_id =
++  content::PermissionControllerDelegate::SubscriptionId subscription_id =
+       GetPermissionControllerDelegate()->SubscribePermissionStatusChange(
+           PermissionType::GEOLOCATION, child, GURL(kOrigin2),
+           base::Bind(&PermissionManagerTest::OnPermissionChange,
+diff --git a/content/browser/android/nfc_host.cc b/content/browser/android/nfc_host.cc
+index 30517f69b3d790690121bda2f3de50c0e31fadd1..0f077d211a23d05813dafd7dc621915c1fb79ba5 100644
+--- a/content/browser/android/nfc_host.cc
++++ b/content/browser/android/nfc_host.cc
+@@ -99,8 +99,8 @@ void NFCHost::OnPermissionStatusChange(blink::mojom::PermissionStatus status) {
+ 
+ void NFCHost::Close() {
+   nfc_provider_.reset();
+-  if (subscription_id_ != 0)
+-    permission_controller_->UnsubscribePermissionStatusChange(subscription_id_);
++  permission_controller_->UnsubscribePermissionStatusChange(subscription_id_);
++  subscription_id_ = PermissionController::SubscriptionId();
+ }
+ 
+ }  // namespace content
+diff --git a/content/browser/android/nfc_host.h b/content/browser/android/nfc_host.h
+index 8df7cbec810ecb535f4ce4b54266c34243341571..6b5f8dde17d0abda6132845018b4a8f81859cd0d 100644
+--- a/content/browser/android/nfc_host.h
++++ b/content/browser/android/nfc_host.h
+@@ -44,7 +44,7 @@ class NFCHost : public WebContentsObserver {
+   mojo::Remote<device::mojom::NFCProvider> nfc_provider_;
+ 
+   // Permission change subscription ID provided by |permission_controller_|.
+-  int subscription_id_ = 0;
++  PermissionController::SubscriptionId subscription_id_;
+ 
+   DISALLOW_COPY_AND_ASSIGN(NFCHost);
+ };
+diff --git a/content/browser/permissions/permission_controller_impl.cc b/content/browser/permissions/permission_controller_impl.cc
+index c6edd2ebec0b57808512c3b6c574548431efac7e..4722e9d7b3ed77489fa28f97afa55726f7f727e4 100644
+--- a/content/browser/permissions/permission_controller_impl.cc
++++ b/content/browser/permissions/permission_controller_impl.cc
+@@ -132,7 +132,8 @@ struct PermissionControllerImpl::Subscription {
+   int render_frame_id = -1;
+   int render_process_id = -1;
+   base::RepeatingCallback<void(blink::mojom::PermissionStatus)> callback;
+-  int delegate_subscription_id;
++  // This is default-initialized to an invalid ID.
++  PermissionControllerDelegate::SubscriptionId delegate_subscription_id;
+ };
+ 
+ PermissionControllerImpl::~PermissionControllerImpl() {
+@@ -388,7 +389,8 @@ void PermissionControllerImpl::OnDelegatePermissionStatusChange(
+     subscription->callback.Run(status);
+ }
+ 
+-int PermissionControllerImpl::SubscribePermissionStatusChange(
++PermissionControllerImpl::SubscriptionId
++PermissionControllerImpl::SubscribePermissionStatusChange(
+     PermissionType permission,
+     RenderFrameHost* render_frame_host,
+     const GURL& requesting_origin,
+@@ -422,21 +424,21 @@ int PermissionControllerImpl::SubscribePermissionStatusChange(
+             base::BindRepeating(
+                 &PermissionControllerImpl::OnDelegatePermissionStatusChange,
+                 base::Unretained(this), subscription.get()));
+-  } else {
+-    subscription->delegate_subscription_id = kNoPendingOperation;
+   }
+-  return subscriptions_.Add(std::move(subscription));
++
++  auto id = subscription_id_generator_.GenerateNextId();
++  subscriptions_.AddWithID(std::move(subscription), id);
++  return id;
+ }
+ 
+ void PermissionControllerImpl::UnsubscribePermissionStatusChange(
+-    int subscription_id) {
++    SubscriptionId subscription_id) {
+   Subscription* subscription = subscriptions_.Lookup(subscription_id);
+   if (!subscription)
+     return;
+   PermissionControllerDelegate* delegate =
+       browser_context_->GetPermissionControllerDelegate();
+-  if (delegate &&
+-      subscription->delegate_subscription_id != kNoPendingOperation) {
++  if (delegate) {
+     delegate->UnsubscribePermissionStatusChange(
+         subscription->delegate_subscription_id);
+   }
+diff --git a/content/browser/permissions/permission_controller_impl.h b/content/browser/permissions/permission_controller_impl.h
+index 7ebf3c48a0e863d9f4312b37e014ce0f89e5c3c7..d85788867f746547f80405c46660e055631d9208 100644
+--- a/content/browser/permissions/permission_controller_impl.h
++++ b/content/browser/permissions/permission_controller_impl.h
+@@ -72,18 +72,19 @@ class CONTENT_EXPORT PermissionControllerImpl : public PermissionController {
+                        const GURL& requesting_origin,
+                        const GURL& embedding_origin);
+ 
+-  int SubscribePermissionStatusChange(
++  SubscriptionId SubscribePermissionStatusChange(
+       PermissionType permission,
+       RenderFrameHost* render_frame_host,
+       const GURL& requesting_origin,
+       const base::RepeatingCallback<void(blink::mojom::PermissionStatus)>&
+           callback);
+ 
+-  void UnsubscribePermissionStatusChange(int subscription_id);
++  void UnsubscribePermissionStatusChange(SubscriptionId subscription_id);
+ 
+  private:
+   struct Subscription;
+-  using SubscriptionsMap = base::IDMap<std::unique_ptr<Subscription>>;
++  using SubscriptionsMap =
++      base::IDMap<std::unique_ptr<Subscription>, SubscriptionId>;
+   using SubscriptionsStatusMap =
+       base::flat_map<SubscriptionsMap::KeyType, blink::mojom::PermissionStatus>;
+ 
+@@ -98,7 +99,13 @@ class CONTENT_EXPORT PermissionControllerImpl : public PermissionController {
+       const base::Optional<url::Origin>& origin);
+ 
+   DevToolsPermissionOverrides devtools_permission_overrides_;
++
++  // Note that SubscriptionId is distinct from
++  // PermissionControllerDelegate::SubscriptionId, and the concrete ID values
++  // may be different as well.
+   SubscriptionsMap subscriptions_;
++  SubscriptionId::Generator subscription_id_generator_;
++
+   BrowserContext* browser_context_;
+ 
+   DISALLOW_COPY_AND_ASSIGN(PermissionControllerImpl);
+diff --git a/content/browser/permissions/permission_service_context.cc b/content/browser/permissions/permission_service_context.cc
+index c3ab81294edbb297108c3b8f59a35f1cfb8131f9..f15abf265eb690b5dfd66bb1c2d5e13b005ddbd0 100644
+--- a/content/browser/permissions/permission_service_context.cc
++++ b/content/browser/permissions/permission_service_context.cc
+@@ -11,7 +11,6 @@
+ #include "content/browser/permissions/permission_service_impl.h"
+ #include "content/public/browser/browser_context.h"
+ #include "content/public/browser/navigation_handle.h"
+-#include "content/public/browser/permission_controller.h"
+ #include "content/public/browser/render_frame_host.h"
+ #include "content/public/browser/render_process_host.h"
+ #include "content/public/browser/web_contents.h"
+@@ -32,7 +31,7 @@ class PermissionServiceContext::PermissionSubscription {
+   PermissionSubscription& operator=(const PermissionSubscription&) = delete;
+ 
+   ~PermissionSubscription() {
+-    DCHECK_NE(id_, 0);
++    DCHECK(id_);
+     BrowserContext* browser_context = context_->GetBrowserContext();
+     if (browser_context) {
+       PermissionControllerImpl::FromBrowserContext(browser_context)
+@@ -41,7 +40,7 @@ class PermissionServiceContext::PermissionSubscription {
+   }
+ 
+   void OnConnectionError() {
+-    DCHECK_NE(id_, 0);
++    DCHECK(id_);
+     context_->ObserverHadConnectionError(id_);
+   }
+ 
+@@ -49,12 +48,12 @@ class PermissionServiceContext::PermissionSubscription {
+     observer_->OnPermissionStatusChange(status);
+   }
+ 
+-  void set_id(int id) { id_ = id; }
++  void set_id(PermissionController::SubscriptionId id) { id_ = id; }
+ 
+  private:
+   PermissionServiceContext* const context_;
+   mojo::Remote<blink::mojom::PermissionObserver> observer_;
+-  int id_ = 0;
++  PermissionController::SubscriptionId id_;
+ };
+ 
+ PermissionServiceContext::PermissionServiceContext(
+@@ -108,7 +107,7 @@ void PermissionServiceContext::CreateSubscription(
+   }
+ 
+   GURL requesting_origin(origin.Serialize());
+-  int subscription_id =
++  auto subscription_id =
+       PermissionControllerImpl::FromBrowserContext(browser_context)
+           ->SubscribePermissionStatusChange(
+               permission_type, render_frame_host_, requesting_origin,
+@@ -119,7 +118,8 @@ void PermissionServiceContext::CreateSubscription(
+   subscriptions_[subscription_id] = std::move(subscription);
+ }
+ 
+-void PermissionServiceContext::ObserverHadConnectionError(int subscription_id) {
++void PermissionServiceContext::ObserverHadConnectionError(
++    PermissionController::SubscriptionId subscription_id) {
+   size_t erased = subscriptions_.erase(subscription_id);
+   DCHECK_EQ(1u, erased);
+ }
+diff --git a/content/browser/permissions/permission_service_context.h b/content/browser/permissions/permission_service_context.h
+index 4f93be504fd854b50bea96dedbc5d324d25ea6f1..0680c70c8ee4a79bb85c2fd1e3769a29f339816e 100644
+--- a/content/browser/permissions/permission_service_context.h
++++ b/content/browser/permissions/permission_service_context.h
+@@ -9,6 +9,7 @@
+ #include <unordered_map>
+ 
+ #include "content/common/content_export.h"
++#include "content/public/browser/permission_controller.h"
+ #include "content/public/browser/permission_type.h"
+ #include "content/public/browser/web_contents_observer.h"
+ #include "mojo/public/cpp/bindings/pending_receiver.h"
+@@ -52,7 +53,8 @@ class CONTENT_EXPORT PermissionServiceContext : public WebContentsObserver {
+       mojo::PendingRemote<blink::mojom::PermissionObserver> observer);
+ 
+   // Called when the connection to a PermissionObserver has an error.
+-  void ObserverHadConnectionError(int subscription_id);
++  void ObserverHadConnectionError(
++      PermissionController::SubscriptionId subscription_id);
+ 
+   // May return nullptr during teardown, or when showing an interstitial.
+   BrowserContext* GetBrowserContext() const;
+@@ -78,7 +80,8 @@ class CONTENT_EXPORT PermissionServiceContext : public WebContentsObserver {
+   RenderFrameHost* const render_frame_host_;
+   RenderProcessHost* const render_process_host_;
+   mojo::UniqueReceiverSet<blink::mojom::PermissionService> services_;
+-  std::unordered_map<int, std::unique_ptr<PermissionSubscription>>
++  std::unordered_map<PermissionController::SubscriptionId,
++                     std::unique_ptr<PermissionSubscription>>
+       subscriptions_;
+ };
+ 
+diff --git a/content/browser/renderer_host/media/media_stream_manager.h b/content/browser/renderer_host/media/media_stream_manager.h
+index 4468b5c906454a8cf4484c8f3f81841c9130721b..677f7a5fe22b55f12c324048972a7200ac8c873b 100644
+--- a/content/browser/renderer_host/media/media_stream_manager.h
++++ b/content/browser/renderer_host/media/media_stream_manager.h
+@@ -50,6 +50,7 @@
+ #include "content/public/browser/desktop_media_id.h"
+ #include "content/public/browser/media_request_state.h"
+ #include "content/public/browser/media_stream_request.h"
++#include "content/public/browser/permission_controller.h"
+ #include "media/base/video_facing.h"
+ #include "third_party/blink/public/common/mediastream/media_devices.h"
+ #include "third_party/blink/public/common/mediastream/media_stream_controls.h"
+diff --git a/content/public/browser/permission_controller.h b/content/public/browser/permission_controller.h
+index b9b42def49b35d31c22ee0d6c158737bdc0824b6..77fe96a1c33aea5e887e171b92f199acdf7dd6df 100644
+--- a/content/public/browser/permission_controller.h
++++ b/content/public/browser/permission_controller.h
+@@ -6,6 +6,7 @@
+ #define CONTENT_PUBLIC_BROWSER_PERMISSION_CONTROLLER_H_
+ 
+ #include "base/supports_user_data.h"
++#include "base/util/type_safety/id_type.h"
+ #include "content/common/content_export.h"
+ #include "content/public/browser/permission_type.h"
+ #include "third_party/blink/public/mojom/permissions/permission_status.mojom.h"
+@@ -20,8 +21,13 @@ class RenderFrameHost;
+ class CONTENT_EXPORT PermissionController
+     : public base::SupportsUserData::Data {
+  public:
+-  // Constant retured when registering and subscribing if
+-  // cancelling/unsubscribing at a later stage would have no effect.
++  // Identifier for an active subscription. This is intentionally a distinct
++  // type from PermissionControllerDelegate::SubscriptionId as the concrete
++  // identifier values may be different.
++  using SubscriptionId = util::IdType64<PermissionController>;
++
++  // Constant returned when requesting a permission if cancelling at a later
++  // stage would have no effect.
+   static const int kNoPendingOperation = -1;
+ 
+   ~PermissionController() override {}
+@@ -48,4 +54,17 @@ class CONTENT_EXPORT PermissionController
+ 
+ }  // namespace content
+ 
++namespace std {
++
++template <>
++struct hash<content::PermissionController::SubscriptionId> {
++  std::size_t operator()(
++      const content::PermissionController::SubscriptionId& v) const {
++    content::PermissionController::SubscriptionId::Hasher hasher;
++    return hasher(v);
++  }
++};
++
++}  // namespace std
++
+ #endif  // CONTENT_PUBLIC_BROWSER_PERMISSION_CONTROLLER_H_
+diff --git a/content/public/browser/permission_controller_delegate.h b/content/public/browser/permission_controller_delegate.h
+index e47de2a278e67091442c63bb7130022eae587041..82a1d4f0efd384386d8215f39d735ba488e4bc61 100644
+--- a/content/public/browser/permission_controller_delegate.h
++++ b/content/public/browser/permission_controller_delegate.h
+@@ -5,6 +5,7 @@
+ #ifndef CONTENT_PUBLIC_BROWSER_PERMISSION_CONTROLLER_DELEGATE_H_
+ #define CONTENT_PUBLIC_BROWSER_PERMISSION_CONTROLLER_DELEGATE_H_
+ 
++#include "base/util/type_safety/id_type.h"
+ #include "content/common/content_export.h"
+ #include "content/public/browser/devtools_permission_overrides.h"
+ #include "third_party/blink/public/mojom/permissions/permission_status.mojom.h"
+@@ -18,6 +19,10 @@ class RenderFrameHost;
+ class CONTENT_EXPORT PermissionControllerDelegate {
+  public:
+   using PermissionOverrides = DevToolsPermissionOverrides::PermissionOverrides;
++
++  // Identifier for an active subscription.
++  using SubscriptionId = util::IdType64<PermissionControllerDelegate>;
++
+   virtual ~PermissionControllerDelegate() = default;
+ 
+   // Requests a permission on behalf of a frame identified by
+@@ -80,21 +85,21 @@ class CONTENT_EXPORT PermissionControllerDelegate {
+ 
+   // Runs the given |callback| whenever the |permission| associated with the
+   // given RenderFrameHost changes. A nullptr should be passed if the request
+-  // is from a worker. Returns the subscription_id to be used to unsubscribe.
+-  // Can be kNoPendingOperation if the subscribe was not successful.
+-  virtual int SubscribePermissionStatusChange(
++  // is from a worker. Returns the ID to be used to unsubscribe, which can be
++  // `is_null()` if the subscribe was not successful.
++  virtual SubscriptionId SubscribePermissionStatusChange(
+       content::PermissionType permission,
+       content::RenderFrameHost* render_frame_host,
+       const GURL& requesting_origin,
+       base::RepeatingCallback<void(blink::mojom::PermissionStatus)>
+           callback) = 0;
+ 
+-  // Unregisters from permission status change notifications.
+-  // The |subscription_id| must match the value returned by the
+-  // SubscribePermissionStatusChange call. Unsubscribing
+-  // an already unsubscribed |subscription_id| or providing the
+-  // |subscription_id| kNoPendingOperation is a no-op.
+-  virtual void UnsubscribePermissionStatusChange(int subscription_id) = 0;
++  // Unregisters from permission status change notifications. The
++  // |subscription_id| must match the value returned by the
++  // SubscribePermissionStatusChange call. Unsubscribing an already
++  // unsubscribed |subscription_id| or an `is_null()` ID is a no-op.
++  virtual void UnsubscribePermissionStatusChange(
++      SubscriptionId subscription_id) = 0;
+ 
+   // Manually overrides default permission settings of delegate, if overrides
+   // are tracked by the delegate. This method should only be called by the
+@@ -116,4 +121,17 @@ class CONTENT_EXPORT PermissionControllerDelegate {
+ 
+ }  // namespace content
+ 
++namespace std {
++
++template <>
++struct hash<content::PermissionControllerDelegate::SubscriptionId> {
++  std::size_t operator()(
++      const content::PermissionControllerDelegate::SubscriptionId& v) const {
++    content::PermissionControllerDelegate::SubscriptionId::Hasher hasher;
++    return hasher(v);
++  }
++};
++
++}  // namespace std
++
+ #endif  // CONTENT_PUBLIC_BROWSER_PERMISSION_CONTROLLER_DELEGATE_H_
+diff --git a/content/public/test/mock_permission_manager.h b/content/public/test/mock_permission_manager.h
+index a193bd00e23abf2295c8bcf2ed5fb3acae68440f..34e71e23a2dae6d55348d8139480459b36377c0c 100644
+--- a/content/public/test/mock_permission_manager.h
++++ b/content/public/test/mock_permission_manager.h
+@@ -49,13 +49,13 @@ class MockPermissionManager : public PermissionControllerDelegate {
+   void ResetPermission(PermissionType permission,
+                        const GURL& requesting_origin,
+                        const GURL& embedding_origin) override {}
+-  int SubscribePermissionStatusChange(
++  SubscriptionId SubscribePermissionStatusChange(
+       PermissionType permission,
+       RenderFrameHost* render_frame_host,
+       const GURL& requesting_origin,
+       base::RepeatingCallback<void(blink::mojom::PermissionStatus)> callback)
+       override;
+-  void UnsubscribePermissionStatusChange(int subscription_id) override {}
++  void UnsubscribePermissionStatusChange(SubscriptionId subscription_id) override {}
+ 
+  private:
+   DISALLOW_COPY_AND_ASSIGN(MockPermissionManager);
+diff --git a/content/shell/browser/shell_permission_manager.cc b/content/shell/browser/shell_permission_manager.cc
+index d0396ea346f267a26a8d318d518be59a55b9311a..b302b378960e9cf2445e1e8983d05f6fc2c668b6 100644
+--- a/content/shell/browser/shell_permission_manager.cc
++++ b/content/shell/browser/shell_permission_manager.cc
+@@ -133,16 +133,16 @@ ShellPermissionManager::GetPermissionStatusForFrame(
+           .GetOrigin());
+ }
+ 
+-int ShellPermissionManager::SubscribePermissionStatusChange(
++ShellPermissionManager::SubscriptionId
++ShellPermissionManager::SubscribePermissionStatusChange(
+     PermissionType permission,
+     RenderFrameHost* render_frame_host,
+     const GURL& requesting_origin,
+     base::RepeatingCallback<void(blink::mojom::PermissionStatus)> callback) {
+-  return PermissionController::kNoPendingOperation;
++  return SubscriptionId();
+ }
+ 
+ void ShellPermissionManager::UnsubscribePermissionStatusChange(
+-    int subscription_id) {
+-}
++    SubscriptionId subscription_id) {}
+ 
+ }  // namespace content
+diff --git a/content/shell/browser/shell_permission_manager.h b/content/shell/browser/shell_permission_manager.h
+index 85477665a9dd643f50c4567c1133973bc258a94f..ecda464779c39df4a8b4b1726414cf2763033f53 100644
+--- a/content/shell/browser/shell_permission_manager.h
++++ b/content/shell/browser/shell_permission_manager.h
+@@ -42,13 +42,14 @@ class ShellPermissionManager : public PermissionControllerDelegate {
+       content::PermissionType permission,
+       content::RenderFrameHost* render_frame_host,
+       const GURL& requesting_origin) override;
+-  int SubscribePermissionStatusChange(
++  SubscriptionId SubscribePermissionStatusChange(
+       PermissionType permission,
+       RenderFrameHost* render_frame_host,
+       const GURL& requesting_origin,
+       base::RepeatingCallback<void(blink::mojom::PermissionStatus)> callback)
+       override;
+-  void UnsubscribePermissionStatusChange(int subscription_id) override;
++  void UnsubscribePermissionStatusChange(
++      SubscriptionId subscription_id) override;
+ 
+  private:
+   DISALLOW_COPY_AND_ASSIGN(ShellPermissionManager);
+diff --git a/content/shell/browser/web_test/web_test_permission_manager.cc b/content/shell/browser/web_test/web_test_permission_manager.cc
+index 67f34deebcbf854692be497b1c31d8da72a5b03d..9c876335c3a2feee4f73d9f6f8e14d67f3988291 100644
+--- a/content/shell/browser/web_test/web_test_permission_manager.cc
++++ b/content/shell/browser/web_test/web_test_permission_manager.cc
+@@ -147,7 +147,8 @@ WebTestPermissionManager::GetPermissionStatusForFrame(
+           .GetOrigin());
+ }
+ 
+-int WebTestPermissionManager::SubscribePermissionStatusChange(
++WebTestPermissionManager::SubscriptionId
++WebTestPermissionManager::SubscribePermissionStatusChange(
+     PermissionType permission,
+     RenderFrameHost* render_frame_host,
+     const GURL& requesting_origin,
+@@ -170,14 +171,18 @@ int WebTestPermissionManager::SubscribePermissionStatusChange(
+       GetPermissionStatus(permission, subscription->permission.origin,
+                           subscription->permission.embedding_origin);
+ 
+-  return subscriptions_.Add(std::move(subscription));
++  auto id = subscription_id_generator_.GenerateNextId();
++  subscriptions_.AddWithID(std::move(subscription), id);
++  return id;
+ }
+ 
+ void WebTestPermissionManager::UnsubscribePermissionStatusChange(
+-    int subscription_id) {
++    SubscriptionId subscription_id) {
+   DCHECK_CURRENTLY_ON(BrowserThread::UI);
+ 
+-  // Whether |subscription_id| is known will be checked by the Remove() call.
++  if (!subscriptions_.Lookup(subscription_id))
++    return;
++
+   subscriptions_.Remove(subscription_id);
+ }
+ 
+diff --git a/content/shell/browser/web_test/web_test_permission_manager.h b/content/shell/browser/web_test/web_test_permission_manager.h
+index 1d15dbb9c7dda0b1e8642435d8a1e8f48af72e5c..46490c28fb013c2f5c8e75d7e7e24761f4498a58 100644
+--- a/content/shell/browser/web_test/web_test_permission_manager.h
++++ b/content/shell/browser/web_test/web_test_permission_manager.h
+@@ -52,13 +52,14 @@ class WebTestPermissionManager
+       content::PermissionType permission,
+       content::RenderFrameHost* render_frame_host,
+       const GURL& requesting_origin) override;
+-  int SubscribePermissionStatusChange(
++  SubscriptionId SubscribePermissionStatusChange(
+       PermissionType permission,
+       RenderFrameHost* render_frame_host,
+       const GURL& requesting_origin,
+       base::RepeatingCallback<void(blink::mojom::PermissionStatus)> callback)
+       override;
+-  void UnsubscribePermissionStatusChange(int subscription_id) override;
++  void UnsubscribePermissionStatusChange(
++      SubscriptionId subscription_id) override;
+ 
+   void SetPermission(PermissionType permission,
+                      blink::mojom::PermissionStatus status,
+@@ -98,7 +99,8 @@ class WebTestPermissionManager
+   };
+ 
+   struct Subscription;
+-  using SubscriptionsMap = base::IDMap<std::unique_ptr<Subscription>>;
++  using SubscriptionsMap =
++      base::IDMap<std::unique_ptr<Subscription>, SubscriptionId>;
+   using PermissionsMap = std::unordered_map<PermissionDescription,
+                                             blink::mojom::PermissionStatus,
+                                             PermissionDescription::Hash>;
+@@ -116,6 +118,7 @@ class WebTestPermissionManager
+ 
+   // List of subscribers currently listening to permission changes.
+   SubscriptionsMap subscriptions_;
++  SubscriptionId::Generator subscription_id_generator_;
+ 
+   mojo::ReceiverSet<blink::test::mojom::PermissionAutomation> receivers_;
+ 
+diff --git a/fuchsia/engine/browser/web_engine_permission_delegate.cc b/fuchsia/engine/browser/web_engine_permission_delegate.cc
+index 98592f05b6d56108119b106a42d839c28131a324..c18b8be7cdf73720cf02afce9ea75ab98d3f1f64 100644
+--- a/fuchsia/engine/browser/web_engine_permission_delegate.cc
++++ b/fuchsia/engine/browser/web_engine_permission_delegate.cc
+@@ -83,20 +83,21 @@ WebEnginePermissionDelegate::GetPermissionStatusForFrame(
+       permission, url::Origin::Create(requesting_origin));
+ }
+ 
+-int WebEnginePermissionDelegate::SubscribePermissionStatusChange(
++WebEnginePermissionDelegate::SubscriptionId
++WebEnginePermissionDelegate::SubscribePermissionStatusChange(
+     content::PermissionType permission,
+     content::RenderFrameHost* render_frame_host,
+     const GURL& requesting_origin,
+     base::RepeatingCallback<void(blink::mojom::PermissionStatus)> callback) {
+   // TODO(crbug.com/1063094): Implement permission status subscription. It's
+   // used in blink to emit PermissionStatus.onchange notifications.
+-  NOTIMPLEMENTED() << ": " << static_cast<int>(permission);
+-  return content::PermissionController::kNoPendingOperation;
++  NOTIMPLEMENTED_LOG_ONCE() << ": " << static_cast<int>(permission);
++  return SubscriptionId();
+ }
+ 
+ void WebEnginePermissionDelegate::UnsubscribePermissionStatusChange(
+-    int subscription_id) {
++    SubscriptionId subscription_id) {
+   // TODO(crbug.com/1063094): Implement permission status subscription. It's
+   // used in blink to emit PermissionStatus.onchange notifications.
+-  NOTREACHED();
++  NOTIMPLEMENTED_LOG_ONCE();
+ }
+diff --git a/fuchsia/engine/browser/web_engine_permission_delegate.h b/fuchsia/engine/browser/web_engine_permission_delegate.h
+index 036207b75d33b752981007a41aa51f3e64db4f0e..c39989b471c2a74ee1a9140e12f205866a0b7aff 100644
+--- a/fuchsia/engine/browser/web_engine_permission_delegate.h
++++ b/fuchsia/engine/browser/web_engine_permission_delegate.h
+@@ -45,13 +45,14 @@ class WebEnginePermissionDelegate
+       content::PermissionType permission,
+       content::RenderFrameHost* render_frame_host,
+       const GURL& requesting_origin) override;
+-  int SubscribePermissionStatusChange(
++  SubscriptionId SubscribePermissionStatusChange(
+       content::PermissionType permission,
+       content::RenderFrameHost* render_frame_host,
+       const GURL& requesting_origin,
+       base::RepeatingCallback<void(blink::mojom::PermissionStatus)> callback)
+       override;
+-  void UnsubscribePermissionStatusChange(int subscription_id) override;
++  void UnsubscribePermissionStatusChange(
++      SubscriptionId subscription_id) override;
+ };
+ 
+ #endif  // FUCHSIA_ENGINE_BROWSER_WEB_ENGINE_PERMISSION_DELEGATE_H_
+diff --git a/headless/lib/browser/headless_permission_manager.cc b/headless/lib/browser/headless_permission_manager.cc
+index 5d4d609fc0c10e57ef3c6a730340dc409789dcdd..359ecdc4b72d560da830c51f23374150e6b30a2d 100644
+--- a/headless/lib/browser/headless_permission_manager.cc
++++ b/headless/lib/browser/headless_permission_manager.cc
+@@ -71,15 +71,16 @@ HeadlessPermissionManager::GetPermissionStatusForFrame(
+   return blink::mojom::PermissionStatus::ASK;
+ }
+ 
+-int HeadlessPermissionManager::SubscribePermissionStatusChange(
++HeadlessPermissionManager::SubscriptionId
++HeadlessPermissionManager::SubscribePermissionStatusChange(
+     content::PermissionType permission,
+     content::RenderFrameHost* render_frame_host,
+     const GURL& requesting_origin,
+     base::RepeatingCallback<void(blink::mojom::PermissionStatus)> callback) {
+-  return content::PermissionController::kNoPendingOperation;
++  return SubscriptionId();
+ }
+ 
+ void HeadlessPermissionManager::UnsubscribePermissionStatusChange(
+-    int subscription_id) {}
++    SubscriptionId subscription_id) {}
+ 
+ }  // namespace headless
+diff --git a/headless/lib/browser/headless_permission_manager.h b/headless/lib/browser/headless_permission_manager.h
+index 4b83309ab3ada17f7f2ac3323ba5f13ab76b9409..ac30670cb384a79457033a25c13da0c305b8eff2 100644
+--- a/headless/lib/browser/headless_permission_manager.h
++++ b/headless/lib/browser/headless_permission_manager.h
+@@ -46,13 +46,14 @@ class HeadlessPermissionManager : public content::PermissionControllerDelegate {
+       content::PermissionType permission,
+       content::RenderFrameHost* render_frame_host,
+       const GURL& requesting_origin) override;
+-  int SubscribePermissionStatusChange(
++  SubscriptionId SubscribePermissionStatusChange(
+       content::PermissionType permission,
+       content::RenderFrameHost* render_frame_host,
+       const GURL& requesting_origin,
+       base::RepeatingCallback<void(blink::mojom::PermissionStatus)> callback)
+       override;
+-  void UnsubscribePermissionStatusChange(int subscription_id) override;
++  void UnsubscribePermissionStatusChange(
++      SubscriptionId subscription_id) override;
+ 
+  private:
+   content::BrowserContext* browser_context_;
diff --git a/patches/chromium/websocket_don_t_clear_event_queue_on_destruction.patch b/patches/chromium/websocket_don_t_clear_event_queue_on_destruction.patch
new file mode 100644
index 0000000000000..3f291719b4549
--- /dev/null
+++ b/patches/chromium/websocket_don_t_clear_event_queue_on_destruction.patch
@@ -0,0 +1,92 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Adam Rice <ricea@chromium.org>
+Date: Fri, 12 Feb 2021 10:43:43 +0000
+Subject: WebSocket: Don't clear event queue on destruction
+
+It's unnecessary to clear the event queue as it will be garbage
+collected anyway. Stop doing it.
+
+Also add a unit test for GC with pending events. This can only happen if
+the execution context changes while the events are pending.
+
+BUG=1170657
+
+(cherry picked from commit 2dae20b0b3890af23852345a69158c99b47746aa)
+
+(cherry picked from commit 171d6ee562c3cac850d9705e18745bb1214e5d83)
+
+Change-Id: I01e5a687587f7471e88640c43f0dfe83e5c01bd1
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2655089
+Reviewed-by: Yutaka Hirano <yhirano@chromium.org>
+Commit-Queue: Adam Rice <ricea@chromium.org>
+Cr-Original-Original-Commit-Position: refs/heads/master@{#848065}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2660955
+Reviewed-by: Adam Rice <ricea@chromium.org>
+Cr-Original-Commit-Position: refs/branch-heads/4389@{#419}
+Cr-Original-Branched-From: 9251c5db2b6d5a59fe4eac7aafa5fed37c139bb7-refs/heads/master@{#843830}
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2690730
+Auto-Submit: Adam Rice <ricea@chromium.org>
+Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
+Cr-Commit-Position: refs/branch-heads/4324@{#2191}
+Cr-Branched-From: c73b5a651d37a6c4d0b8e3262cc4015a5579c6c8-refs/heads/master@{#827102}
+
+diff --git a/third_party/blink/renderer/modules/websockets/dom_websocket.cc b/third_party/blink/renderer/modules/websockets/dom_websocket.cc
+index 0e9c87462e3bb2ea343abd3120c073f24e9b2d72..b823debc7d4732f304d8ec89f58e5127b4bc8074 100644
+--- a/third_party/blink/renderer/modules/websockets/dom_websocket.cc
++++ b/third_party/blink/renderer/modules/websockets/dom_websocket.cc
+@@ -81,9 +81,7 @@ namespace blink {
+ DOMWebSocket::EventQueue::EventQueue(EventTarget* target)
+     : state_(kActive), target_(target) {}
+ 
+-DOMWebSocket::EventQueue::~EventQueue() {
+-  ContextDestroyed();
+-}
++DOMWebSocket::EventQueue::~EventQueue() = default;
+ 
+ void DOMWebSocket::EventQueue::Dispatch(Event* event) {
+   switch (state_) {
+diff --git a/third_party/blink/renderer/modules/websockets/dom_websocket_test.cc b/third_party/blink/renderer/modules/websockets/dom_websocket_test.cc
+index 4c50ae0990b9a76128ffb59f547eb47789d2d693..370c1944dd6f8a094f2f30fa4f03d573b2f430e3 100644
+--- a/third_party/blink/renderer/modules/websockets/dom_websocket_test.cc
++++ b/third_party/blink/renderer/modules/websockets/dom_websocket_test.cc
+@@ -24,6 +24,7 @@
+ #include "third_party/blink/renderer/platform/bindings/exception_state.h"
+ #include "third_party/blink/renderer/platform/heap/handle.h"
+ #include "third_party/blink/renderer/platform/heap/heap.h"
++#include "third_party/blink/renderer/platform/heap/impl/thread_state.h"
+ #include "third_party/blink/renderer/platform/testing/unit_test_helpers.h"
+ #include "third_party/blink/renderer/platform/wtf/text/string_builder.h"
+ #include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
+@@ -920,6 +921,32 @@ INSTANTIATE_TEST_SUITE_P(
+     DOMWebSocketInvalidClosingCodeTest,
+     testing::Values(0, 1, 998, 999, 1001, 2999, 5000, 9999, 65535));
+ 
++TEST(DOMWebSocketTest, GCWhileEventsPending) {
++  V8TestingScope scope;
++  {
++    DOMWebSocketTestScope websocket_scope(scope.GetExecutionContext());
++
++    EXPECT_CALL(websocket_scope.Channel(),
++                Connect(KURL("ws://example.com/"), String()))
++        .WillOnce(Return(true));
++    EXPECT_CALL(websocket_scope.Channel(), Disconnect());
++
++    auto& socket = websocket_scope.Socket();
++
++    // Cause events to be queued rather than fired.
++    socket.ContextLifecycleStateChanged(mojom::FrameLifecycleState::kPaused);
++
++    socket.Connect("ws://example.com/", Vector<String>(), ASSERT_NO_EXCEPTION);
++    socket.DidError();
++    socket.DidClose(DOMWebSocket::kClosingHandshakeIncomplete, 1006, "");
++
++    // Stop HasPendingActivity() from keeping the object alive.
++    socket.SetExecutionContext(nullptr);
++  }
++
++  ThreadState::Current()->CollectAllGarbageForTesting();
++}
++
+ }  // namespace
+ 
+ }  // namespace blink
diff --git a/patches/config.json b/patches/config.json
index 85f551adf4259..7820430f0885d 100644
--- a/patches/config.json
+++ b/patches/config.json
@@ -5,5 +5,17 @@
 
   "src/electron/patches/v8":  "src/v8",
 
-  "src/electron/patches/node": "src/third_party/electron_node"
+  "src/electron/patches/node": "src/third_party/electron_node",
+
+  "src/electron/patches/usrsctp": "src/third_party/usrsctp/usrsctplib",
+
+  "src/electron/patches/freetype": "src/third_party/freetype/src",
+
+  "src/electron/patches/pdfium": "src/third_party/pdfium",
+
+  "src/electron/patches/angle": "src/third_party/angle",
+
+  "src/electron/patches/skia": "src/third_party/skia",
+
+  "src/electron/patches/icu": "src/third_party/icu"
 }
diff --git a/patches/freetype/.patches b/patches/freetype/.patches
new file mode 100644
index 0000000000000..c5b37a7cc5a4e
--- /dev/null
+++ b/patches/freetype/.patches
@@ -0,0 +1 @@
+test_early_to_prevent_overflow.patch
diff --git a/patches/freetype/test_early_to_prevent_overflow.patch b/patches/freetype/test_early_to_prevent_overflow.patch
new file mode 100644
index 0000000000000..06d1ec811979b
--- /dev/null
+++ b/patches/freetype/test_early_to_prevent_overflow.patch
@@ -0,0 +1,39 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Andrey Belenko <anbelen@microsoft.com>
+Date: Tue, 20 Oct 2020 21:39:54 +0200
+Subject: Test early to prevent overflow.
+
+Bug: chromium:1139963
+
+diff --git a/src/sfnt/pngshim.c b/src/sfnt/pngshim.c
+index 2e64e58463ad04c65424b2386e4a5a0d4ed7ca18..0bf2b4321752fc1526ca10d8fe0c96d5576128bd 100644
+--- a/src/sfnt/pngshim.c
++++ b/src/sfnt/pngshim.c
+@@ -332,6 +332,13 @@
+ 
+     if ( populate_map_and_metrics )
+     {
++      /* reject too large bitmaps similarly to the rasterizer */
++      if ( imgWidth > 0x7FFF || imgHeight > 0x7FFF )
++       {
++         error = FT_THROW( Array_Too_Large );
++         goto DestroyExit;
++       }
++
+       metrics->width  = (FT_UShort)imgWidth;
+       metrics->height = (FT_UShort)imgHeight;
+ 
+@@ -340,13 +347,6 @@
+       map->pixel_mode = FT_PIXEL_MODE_BGRA;
+       map->pitch      = (int)( map->width * 4 );
+       map->num_grays  = 256;
+-
+-      /* reject too large bitmaps similarly to the rasterizer */
+-      if ( map->rows > 0x7FFF || map->width > 0x7FFF )
+-      {
+-        error = FT_THROW( Array_Too_Large );
+-        goto DestroyExit;
+-      }
+     }
+ 
+     /* convert palette/gray image to rgb */
diff --git a/patches/icu/.patches b/patches/icu/.patches
new file mode 100644
index 0000000000000..683e850cfdbf3
--- /dev/null
+++ b/patches/icu/.patches
@@ -0,0 +1 @@
+fix_apply_tzdata2020f_to_icu.patch
diff --git a/patches/icu/fix_apply_tzdata2020f_to_icu.patch b/patches/icu/fix_apply_tzdata2020f_to_icu.patch
new file mode 100644
index 0000000000000..0b4672193bcab
--- /dev/null
+++ b/patches/icu/fix_apply_tzdata2020f_to_icu.patch
@@ -0,0 +1,2552 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Milan Burda <milan.burda@gmail.com>
+Date: Thu, 14 Jan 2021 16:39:39 +0100
+Subject: fix: apply tzdata2020f to ICU
+
+Backport:
+- https://github.com/unicode-org/icu/commit/0080c0c5e7948ab273d6bf6f341e1091afbf432d
+- https://github.com/unicode-org/icu/commit/9dcac1b6ca78fcf1357af05e6db209a357cb5cae
+- https://github.com/unicode-org/icu/commit/c5f182464eff99dba9f8a2cd9c14c7fe9d3eb75b
+- https://github.com/unicode-org/icu/commit/25eb1510ec4e536fe0d0d1024b3ce71819510d0a
+
+diff --git a/common/icudtb.dat b/common/icudtb.dat
+index e8a0bfabd19bd947762db13ca1c3dea60a0aa700..7a853e9999c130986283d0088b3712c5847e500f 100644
+GIT binary patch
+delta 33938
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+diff --git a/common/icudtl.dat b/common/icudtl.dat
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+zi7!ISz=G3o9U7HzutP+N=pYA?lz>?Up_EOdO_X=S2?)erLVqezKW1s~pxcx`TEl|D
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+
+diff --git a/source/data/misc/metaZones.txt b/source/data/misc/metaZones.txt
+index 607e98f323df43cce8f03b5d7f864154b31a024b..3142dc1113cebf1c1684547ec9f5c97fa6569c27 100644
+--- a/source/data/misc/metaZones.txt
++++ b/source/data/misc/metaZones.txt
+@@ -1554,11 +1554,11 @@ metaZones:table(nofallback){
+             {
+                 "America_Pacific",
+                 "1973-10-28 09:00",
+-                "2020-03-08 10:00",
++                "2020-11-01 07:00",
+             }
+             {
+                 "America_Mountain",
+-                "2020-03-08 10:00",
++                "2020-11-01 07:00",
+                 "9999-12-31 23:59",
+             }
+         }
+@@ -1664,11 +1664,11 @@ metaZones:table(nofallback){
+             {
+                 "America_Eastern",
+                 "1970-01-01 00:00",
+-                "2015-11-01 06:00",
++                "2015-03-08 07:00",
+             }
+             {
+                 "Atlantic",
+-                "2015-11-01 06:00",
++                "2015-03-08 07:00",
+                 "2018-03-11 07:00",
+             }
+             {
+@@ -2533,11 +2533,11 @@ metaZones:table(nofallback){
+             {
+                 "America_Pacific",
+                 "1970-01-01 00:00",
+-                "2020-03-08 10:00",
++                "2020-11-01 07:00",
+             }
+             {
+                 "America_Mountain",
+-                "2020-03-08 10:00",
++                "2020-11-01 07:00",
+                 "9999-12-31 23:59",
+             }
+         }
+@@ -2597,6 +2597,31 @@ metaZones:table(nofallback){
+             {
+                 "Australia_Western",
+                 "2018-03-10 17:00",
++                "2018-10-06 20:00",
++            }
++            {
++                "Casey",
++                "2018-10-06 20:00",
++                "2019-03-16 16:00",
++            }
++            {
++                "Australia_Western",
++                "2019-03-16 16:00",
++                "2019-10-03 19:00",
++            }
++            {
++                "Casey",
++                "2019-10-03 19:00",
++                "2020-03-07 16:00",
++            }
++            {
++                "Australia_Western",
++                "2020-03-07 16:00",
++                "2020-10-03 16:01",
++            }
++            {
++                "Casey",
++                "2020-10-03 16:01",
+                 "9999-12-31 23:59",
+             }
+         }
+@@ -2613,13 +2638,6 @@ metaZones:table(nofallback){
+         "Antarctica:Macquarie"{
+             {
+                 "Australia_Eastern",
+-                "1970-01-01 00:00",
+-                "2010-04-03 16:00",
+-            }
+-            {
+-                "Macquarie",
+-                "2010-04-03 16:00",
+-                "9999-12-31 23:59",
+             }
+         }
+         "Antarctica:Mawson"{
+@@ -4036,18 +4054,6 @@ metaZones:table(nofallback){
+         "Europe:Volgograd"{
+             {
+                 "Volgograd",
+-                "1970-01-01 00:00",
+-                "1992-03-28 22:00",
+-            }
+-            {
+-                "Moscow",
+-                "1992-03-28 22:00",
+-                "2018-10-27 23:00",
+-            }
+-            {
+-                "Volgograd",
+-                "2018-10-27 23:00",
+-                "9999-12-31 23:59",
+             }
+         }
+         "Europe:Warsaw"{
+diff --git a/source/data/misc/windowsZones.txt b/source/data/misc/windowsZones.txt
+index 0c11c22459acc7fed078f994c546c2a7d1ebdce0..a7a373a7748ec611dc9a5c87b50a763bc34d2a3a 100644
+--- a/source/data/misc/windowsZones.txt
++++ b/source/data/misc/windowsZones.txt
+@@ -156,7 +156,7 @@ windowsZones:table(nofallback){
+         }
+         "Central Pacific Standard Time"{
+             001{"Pacific/Guadalcanal"}
+-            AU{"Antarctica/Macquarie"}
++            AQ{"Antarctica/Casey"}
+             FM{"Pacific/Ponape Pacific/Kosrae"}
+             NC{"Pacific/Noumea"}
+             SB{"Pacific/Guadalcanal"}
+@@ -593,7 +593,6 @@ windowsZones:table(nofallback){
+         }
+         "Singapore Standard Time"{
+             001{"Asia/Singapore"}
+-            AQ{"Antarctica/Casey"}
+             BN{"Asia/Brunei"}
+             ID{"Asia/Makassar"}
+             MY{"Asia/Kuala_Lumpur Asia/Kuching"}
+@@ -634,7 +633,7 @@ windowsZones:table(nofallback){
+         }
+         "Tasmania Standard Time"{
+             001{"Australia/Hobart"}
+-            AU{"Australia/Hobart Australia/Currie"}
++            AU{"Australia/Hobart Australia/Currie Antarctica/Macquarie"}
+         }
+         "Tocantins Standard Time"{
+             001{"America/Araguaina"}
+@@ -814,5 +813,12 @@ windowsZones:table(nofallback){
+             001{"Asia/Yakutsk"}
+             RU{"Asia/Yakutsk Asia/Khandyga"}
+         }
++        "Yukon Standard Time"{
++            001{"America/Whitehorse"}
++            CA{
++                "America/Whitehorse America/Creston America/Dawson America/Dawson_Cre"
++                "ek America/Fort_Nelson"
++            }
++        }
+     }
+ }
+diff --git a/source/data/misc/zoneinfo64.txt b/source/data/misc/zoneinfo64.txt
+index 9a7d17ce235c6fd2e0bfab30e00c5e29d8d20034..baccda734b7ad8e7df1ce5fb6e38956d185d1f45 100644
+--- a/source/data/misc/zoneinfo64.txt
++++ b/source/data/misc/zoneinfo64.txt
+@@ -1,19 +1,19 @@
+ //---------------------------------------------------------
+ // Copyright (C) 2016 and later: Unicode, Inc. and others.
+-// License & terms of use: http://www.unicode.org/copyright.html#License
++// License & terms of use: http://www.unicode.org/copyright.html
+ //---------------------------------------------------------
+ // Build tool:  tz2icu
+-// Build date:  Fri Apr 24 15:35:10 2020
++// Build date:  Mon Jan  4 23:38:49 2021
+ // tz database: ftp://ftp.iana.org/tz/
+-// tz version:  2020a
+-// ICU version: 67.1
++// tz version:  2020f
++// ICU version: 68.2
+ //---------------------------------------------------------
+ // >> !!! >>   THIS IS A MACHINE-GENERATED FILE   << !!! <<
+ // >> !!! >>>            DO NOT EDIT             <<< !!! <<
+ //---------------------------------------------------------
+ 
+ zoneinfo64:table(nofallback) {
+- TZVersion { "2020a" }
++ TZVersion { "2020f" }
+  Zones:array { 
+   /* ACT */ :int { 356 } //Z#0
+   /* AET */ :int { 368 } //Z#1
+@@ -27,13 +27,13 @@ zoneinfo64:table(nofallback) {
+     links:intvector { 5, 11, 13, 21, 22, 27, 38, 51, 52, 55, 348 }
+   } //Z#5
+   /* Africa/Accra */ :table {
+-    trans:intvector { -1640995148, -1556841600, -1546388400, -1525305600, -1514852400, -1493769600, -1483316400, -1462233600, -1451780400, -1430611200, -1420158000, -1399075200, -1388622000, -1367539200, -1357086000, -1336003200, -1325550000, -1304380800, -1293927600, -1272844800, -1262391600, -1241308800, -1230855600, -1209772800, -1199319600, -1178150400, -1167697200, -1146614400, -1136161200, -1115078400, -1104625200, -1083542400, -1073089200, -1051920000, -1041466800, -1020384000, -1009930800, -988848000, -978394800, -957312000, -946858800, -925689600, -915236400, -894153600, -883700400, -862617600, -852164400 }
+-    typeOffsets:intvector { -52, 0, 0, 0, 0, 1200 }
+-    typeMap:bin { "0102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201" }
++    trans:intvector { -1709337548, -1581206400, -1577917200, -1556834400, -1546294800, -1525298400, -1514758800, -1493762400, -1483222800, -1462226400, -1451686800, -1430604000, -1420064400, -1399068000, -1388528400, -1367532000, -1356992400, -1335996000, -1325456400, -1304373600, -1293834000, -1272837600, -1262298000, -1241301600, -1230762000, -1209765600, -1199226000, -1178143200, -1167603600, -1146607200, -1136067600, -1115071200, -1104531600, -1083535200, -1072995600, -1051912800, -1041373200, -1020376800, -1009837200, -988840800, -978301200, -957304800, -946765200, -936309600, -915142800, -904773600, -883606800, -880329600, -756952200, -610149600, -599610600, -578613600, -568074600, -546991200, -536452200, -515455200, -504916200, -483919200, -473380200, -452383200, -441844200 }
++    typeOffsets:intvector { -52, 0, 0, 0, 0, 1200, 0, 1800, 1800, 0 }
++    typeMap:bin { "01020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010401030103010301030103010301" }
+   } //Z#6
+   /* Africa/Addis_Ababa */ :int { 48 } //Z#7
+   /* Africa/Algiers */ :table {
+-    transPre32:intvector { -1, 1808288224 }
++    transPre32:intvector { -1, 1808374564 }
+     trans:intvector { -1855958961, -1689814800, -1680397200, -1665363600, -1648342800, -1635123600, -1616893200, -1604278800, -1585443600, -1574038800, -1552266000, -1539997200, -1531443600, -956365200, -950486400, -942012000, -812502000, -796262400, -781052400, -766630800, -733280400, -439430400, -212029200, 41468400, 54774000, 231724800, 246236400, 259545600, 275274000, 309740400, 325468800, 341802000, 357523200 }
+     typeOffsets:intvector { 732, 0, 0, 0, 0, 3600, 561, 0, 3600, 0, 3600, 3600 }
+     typeMap:bin { "03010201020102010201020102010201040504050401040102010204050401020104" }
+@@ -59,8 +59,8 @@ zoneinfo64:table(nofallback) {
+     links:intvector { 3, 18, 402 }
+   } //Z#18
+   /* Africa/Casablanca */ :table {
+-    trans:intvector { -1773012580, -956361600, -950490000, -942019200, -761187600, -617241600, -605149200, -81432000, -71110800, 141264000, 147222000, 199756800, 207702000, 231292800, 244249200, 265507200, 271033200, 448243200, 504918000, 1212278400, 1220223600, 1243814400, 1250809200, 1272758400, 1281222000, 1301788800, 1312066800, 1335664800, 1342749600, 1345428000, 1348970400, 1367114400, 1373162400, 1376100000, 1382839200, 1396144800, 1403920800, 1406944800, 1414288800, 1427594400, 1434247200, 1437271200, 1445738400, 1459044000, 1465092000, 1468116000, 1477792800, 1490493600, 1495332000, 1498960800, 1509242400, 1521943200, 1526176800, 1529200800, 1557021600, 1560045600, 1587261600, 1590890400, 1618106400, 1621130400, 1648346400, 1651975200, 1679191200, 1682215200, 1710036000, 1713060000, 1740276000, 1743904800, 1771120800, 1774144800, 1801965600, 1804989600, 1832205600, 1835834400, 1863050400, 1866074400, 1893290400, 1896919200, 1924135200, 1927159200, 1954980000, 1958004000, 1985220000, 1988848800, 2016064800, 2019088800, 2046304800, 2049933600, 2077149600, 2080778400, 2107994400, 2111018400, 2138234400, 2141863200 }
+-    transPost32:intvector { 0, -2125888096, 0, -2122864096, 0, -2095043296, 0, -2092019296, 0, -2064803296, 0, -2061174496, 0, -2033958496, 0, -2030934496, 0, -2003718496, 0, -2000089696, 0, -1972873696, 0, -1969244896, 0, -1942028896, 0, -1939004896, 0, -1911788896, 0, -1908160096, 0, -1880944096, 0, -1877920096, 0, -1850099296, 0, -1847075296, 0, -1819859296, 0, -1816230496, 0, -1789014496, 0, -1785990496, 0, -1758774496, 0, -1755145696, 0, -1727929696, 0, -1724300896, 0, -1697084896, 0, -1694060896, 0, -1666844896, 0, -1663216096, 0, -1636000096, 0, -1632976096, 0, -1605155296, 0, -1602131296, 0, -1574915296, 0, -1571286496, 0, -1544070496, 0, -1541046496, 0, -1513830496, 0, -1510201696, 0, -1482985696, 0, -1479356896, 0, -1452140896, 0, -1449116896, 0, -1421900896, 0, -1418272096, 0, -1391056096, 0, -1388032096, 0, -1360211296, 0, -1357187296, 0, -1329971296, 0, -1326342496, 0, -1299126496, 0, -1296102496, 0, -1268886496, 0, -1265257696, 0, -1238041696, 0, -1234412896, 0, -1207196896, 0, -1204172896, 0, -1176956896, 0, -1173328096, 0, -1146112096, 0, -1143088096, 0, -1115267296, 0, -1112243296, 0, -1085027296, 0, -1081398496, 0, -1054182496, 0, -1051158496, 0, -1023942496, 0, -1020313696, 0, -993097696, 0, -989468896, 0, -962252896, 0, -959228896, 0, -932012896, 0, -928384096, 0, -901168096, 0, -898144096, 0, -870323296, 0, -867299296, 0, -840083296, 0, -836454496, 0, -809238496, 0, -806214496, 0, -778998496, 0, -775369696, 0, -748153696, 0, -745129696, 0, -717308896, 0, -714284896, 0, -687068896, 0, -683440096, 0, -656224096, 0, -653200096, 0, -625379296, 0, -622355296, 0, -595139296, 0, -591510496 }
++    trans:intvector { -1773012580, -956361600, -950490000, -942019200, -761187600, -617241600, -605149200, -81432000, -71110800, 141264000, 147222000, 199756800, 207702000, 231292800, 244249200, 265507200, 271033200, 448243200, 504918000, 1212278400, 1220223600, 1243814400, 1250809200, 1272758400, 1281222000, 1301788800, 1312066800, 1335664800, 1342749600, 1345428000, 1348970400, 1367114400, 1373162400, 1376100000, 1382839200, 1396144800, 1403920800, 1406944800, 1414288800, 1427594400, 1434247200, 1437271200, 1445738400, 1459044000, 1465092000, 1468116000, 1477792800, 1490493600, 1495332000, 1498960800, 1509242400, 1521943200, 1526176800, 1529200800, 1557021600, 1560045600, 1587261600, 1590890400, 1618106400, 1621130400, 1648346400, 1651975200, 1679191200, 1682820000, 1710036000, 1713060000, 1740276000, 1743904800, 1771120800, 1774144800, 1801965600, 1804989600, 1832205600, 1835834400, 1863050400, 1866074400, 1893290400, 1896919200, 1924135200, 1927764000, 1954980000, 1958004000, 1985220000, 1988848800, 2016064800, 2019088800, 2046304800, 2049933600, 2077149600, 2080778400, 2107994400, 2111018400, 2138234400, 2141863200 }
++    transPost32:intvector { 0, -2125888096, 0, -2122259296, 0, -2095043296, 0, -2092019296, 0, -2064803296, 0, -2061174496, 0, -2033958496, 0, -2030934496, 0, -2003718496, 0, -2000089696, 0, -1972873696, 0, -1969244896, 0, -1942028896, 0, -1939004896, 0, -1911788896, 0, -1908160096, 0, -1880944096, 0, -1877315296, 0, -1850099296, 0, -1847075296, 0, -1819859296, 0, -1816230496, 0, -1789014496, 0, -1785990496, 0, -1758774496, 0, -1755145696, 0, -1727929696, 0, -1724300896, 0, -1697084896, 0, -1694060896, 0, -1666844896, 0, -1663216096, 0, -1636000096, 0, -1632371296, 0, -1605155296, 0, -1602131296, 0, -1574915296, 0, -1571286496, 0, -1544070496, 0, -1541046496, 0, -1513830496, 0, -1510201696, 0, -1482985696, 0, -1479356896, 0, -1452140896, 0, -1449116896, 0, -1421900896, 0, -1418272096, 0, -1391056096, 0, -1387427296, 0, -1360211296, 0, -1357187296, 0, -1329971296, 0, -1326342496, 0, -1299126496, 0, -1296102496, 0, -1268886496, 0, -1265257696, 0, -1238041696, 0, -1234412896, 0, -1207196896, 0, -1204172896, 0, -1176956896, 0, -1173328096, 0, -1146112096, 0, -1142483296, 0, -1115267296, 0, -1112243296, 0, -1085027296, 0, -1081398496, 0, -1054182496, 0, -1051158496, 0, -1023942496, 0, -1020313696, 0, -993097696, 0, -989468896, 0, -962252896, 0, -959228896, 0, -932012896, 0, -928384096, 0, -901168096, 0, -897539296, 0, -870323296, 0, -867299296, 0, -840083296, 0, -836454496, 0, -809238496, 0, -806214496, 0, -778998496, 0, -775369696, 0, -748153696, 0, -744524896, 0, -717308896, 0, -714284896, 0, -687068896, 0, -683440096, 0, -656224096, 0, -652595296, 0, -625379296, 0, -622355296, 0, -595139296, 0, -591510496 }
+     typeOffsets:intvector { -1820, 0, 0, 0, 0, 3600, 3600, 0 }
+     typeMap:bin { "01020102010201020102010201020102010301020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102" }
+   } //Z#19
+@@ -79,8 +79,8 @@ zoneinfo64:table(nofallback) {
+   /* Africa/Djibouti */ :int { 48 } //Z#24
+   /* Africa/Douala */ :int { 36 } //Z#25
+   /* Africa/El_Aaiun */ :table {
+-    trans:intvector { -1136070432, 198291600, 199756800, 207702000, 231292800, 244249200, 265507200, 271033200, 1212278400, 1220223600, 1243814400, 1250809200, 1272758400, 1281222000, 1301788800, 1312066800, 1335664800, 1342749600, 1345428000, 1348970400, 1367114400, 1373162400, 1376100000, 1382839200, 1396144800, 1403920800, 1406944800, 1414288800, 1427594400, 1434247200, 1437271200, 1445738400, 1459044000, 1465092000, 1468116000, 1477792800, 1490493600, 1495332000, 1498960800, 1509242400, 1521943200, 1526176800, 1529200800, 1557021600, 1560045600, 1587261600, 1590890400, 1618106400, 1621130400, 1648346400, 1651975200, 1679191200, 1682215200, 1710036000, 1713060000, 1740276000, 1743904800, 1771120800, 1774144800, 1801965600, 1804989600, 1832205600, 1835834400, 1863050400, 1866074400, 1893290400, 1896919200, 1924135200, 1927159200, 1954980000, 1958004000, 1985220000, 1988848800, 2016064800, 2019088800, 2046304800, 2049933600, 2077149600, 2080778400, 2107994400, 2111018400, 2138234400, 2141863200 }
+-    transPost32:intvector { 0, -2125888096, 0, -2122864096, 0, -2095043296, 0, -2092019296, 0, -2064803296, 0, -2061174496, 0, -2033958496, 0, -2030934496, 0, -2003718496, 0, -2000089696, 0, -1972873696, 0, -1969244896, 0, -1942028896, 0, -1939004896, 0, -1911788896, 0, -1908160096, 0, -1880944096, 0, -1877920096, 0, -1850099296, 0, -1847075296, 0, -1819859296, 0, -1816230496, 0, -1789014496, 0, -1785990496, 0, -1758774496, 0, -1755145696, 0, -1727929696, 0, -1724300896, 0, -1697084896, 0, -1694060896, 0, -1666844896, 0, -1663216096, 0, -1636000096, 0, -1632976096, 0, -1605155296, 0, -1602131296, 0, -1574915296, 0, -1571286496, 0, -1544070496, 0, -1541046496, 0, -1513830496, 0, -1510201696, 0, -1482985696, 0, -1479356896, 0, -1452140896, 0, -1449116896, 0, -1421900896, 0, -1418272096, 0, -1391056096, 0, -1388032096, 0, -1360211296, 0, -1357187296, 0, -1329971296, 0, -1326342496, 0, -1299126496, 0, -1296102496, 0, -1268886496, 0, -1265257696, 0, -1238041696, 0, -1234412896, 0, -1207196896, 0, -1204172896, 0, -1176956896, 0, -1173328096, 0, -1146112096, 0, -1143088096, 0, -1115267296, 0, -1112243296, 0, -1085027296, 0, -1081398496, 0, -1054182496, 0, -1051158496, 0, -1023942496, 0, -1020313696, 0, -993097696, 0, -989468896, 0, -962252896, 0, -959228896, 0, -932012896, 0, -928384096, 0, -901168096, 0, -898144096, 0, -870323296, 0, -867299296, 0, -840083296, 0, -836454496, 0, -809238496, 0, -806214496, 0, -778998496, 0, -775369696, 0, -748153696, 0, -745129696, 0, -717308896, 0, -714284896, 0, -687068896, 0, -683440096, 0, -656224096, 0, -653200096, 0, -625379296, 0, -622355296, 0, -595139296, 0, -591510496 }
++    trans:intvector { -1136070432, 198291600, 199756800, 207702000, 231292800, 244249200, 265507200, 271033200, 1212278400, 1220223600, 1243814400, 1250809200, 1272758400, 1281222000, 1301788800, 1312066800, 1335664800, 1342749600, 1345428000, 1348970400, 1367114400, 1373162400, 1376100000, 1382839200, 1396144800, 1403920800, 1406944800, 1414288800, 1427594400, 1434247200, 1437271200, 1445738400, 1459044000, 1465092000, 1468116000, 1477792800, 1490493600, 1495332000, 1498960800, 1509242400, 1521943200, 1526176800, 1529200800, 1557021600, 1560045600, 1587261600, 1590890400, 1618106400, 1621130400, 1648346400, 1651975200, 1679191200, 1682820000, 1710036000, 1713060000, 1740276000, 1743904800, 1771120800, 1774144800, 1801965600, 1804989600, 1832205600, 1835834400, 1863050400, 1866074400, 1893290400, 1896919200, 1924135200, 1927764000, 1954980000, 1958004000, 1985220000, 1988848800, 2016064800, 2019088800, 2046304800, 2049933600, 2077149600, 2080778400, 2107994400, 2111018400, 2138234400, 2141863200 }
++    transPost32:intvector { 0, -2125888096, 0, -2122259296, 0, -2095043296, 0, -2092019296, 0, -2064803296, 0, -2061174496, 0, -2033958496, 0, -2030934496, 0, -2003718496, 0, -2000089696, 0, -1972873696, 0, -1969244896, 0, -1942028896, 0, -1939004896, 0, -1911788896, 0, -1908160096, 0, -1880944096, 0, -1877315296, 0, -1850099296, 0, -1847075296, 0, -1819859296, 0, -1816230496, 0, -1789014496, 0, -1785990496, 0, -1758774496, 0, -1755145696, 0, -1727929696, 0, -1724300896, 0, -1697084896, 0, -1694060896, 0, -1666844896, 0, -1663216096, 0, -1636000096, 0, -1632371296, 0, -1605155296, 0, -1602131296, 0, -1574915296, 0, -1571286496, 0, -1544070496, 0, -1541046496, 0, -1513830496, 0, -1510201696, 0, -1482985696, 0, -1479356896, 0, -1452140896, 0, -1449116896, 0, -1421900896, 0, -1418272096, 0, -1391056096, 0, -1387427296, 0, -1360211296, 0, -1357187296, 0, -1329971296, 0, -1326342496, 0, -1299126496, 0, -1296102496, 0, -1268886496, 0, -1265257696, 0, -1238041696, 0, -1234412896, 0, -1207196896, 0, -1204172896, 0, -1176956896, 0, -1173328096, 0, -1146112096, 0, -1142483296, 0, -1115267296, 0, -1112243296, 0, -1085027296, 0, -1081398496, 0, -1054182496, 0, -1051158496, 0, -1023942496, 0, -1020313696, 0, -993097696, 0, -989468896, 0, -962252896, 0, -959228896, 0, -932012896, 0, -928384096, 0, -901168096, 0, -897539296, 0, -870323296, 0, -867299296, 0, -840083296, 0, -836454496, 0, -809238496, 0, -806214496, 0, -778998496, 0, -775369696, 0, -748153696, 0, -744524896, 0, -717308896, 0, -714284896, 0, -687068896, 0, -683440096, 0, -656224096, 0, -652595296, 0, -625379296, 0, -622355296, 0, -595139296, 0, -591510496 }
+     typeOffsets:intvector { -3168, 0, -3600, 0, 0, 0, 0, 3600 }
+     typeMap:bin { "0102030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203" }
+   } //Z#26
+@@ -108,9 +108,9 @@ zoneinfo64:table(nofallback) {
+   /* Africa/Kigali */ :int { 43 } //Z#34
+   /* Africa/Kinshasa */ :int { 36 } //Z#35
+   /* Africa/Lagos */ :table {
+-    trans:intvector { -1588464816 }
+-    typeOffsets:intvector { 816, 0, 3600, 0 }
+-    typeMap:bin { "01" }
++    trans:intvector { -2035584815, -1940889600, -1767226415, -1588465800 }
++    typeOffsets:intvector { 815, 0, 0, 0, 1800, 0, 3600, 0 }
++    typeMap:bin { "01000203" }
+     links:intvector { 12, 16, 25, 35, 36, 37, 39, 42, 50, 53 }
+   } //Z#36
+   /* Africa/Libreville */ :int { 36 } //Z#37
+@@ -134,9 +134,9 @@ zoneinfo64:table(nofallback) {
+     typeMap:bin { "0102" }
+   } //Z#47
+   /* Africa/Nairobi */ :table {
+-    trans:intvector { -1309746436, -1262314800, -946780200, -315629100 }
++    trans:intvector { -1946168836, -1309746600, -1261969200, -1041388200, -865305900 }
+     typeOffsets:intvector { 8836, 0, 9000, 0, 9900, 0, 10800, 0 }
+-    typeMap:bin { "03010203" }
++    typeMap:bin { "0103010203" }
+     links:intvector { 7, 9, 10, 23, 24, 32, 46, 48, 397, 516, 520, 525 }
+   } //Z#48
+   /* Africa/Ndjamena */ :table {
+@@ -318,9 +318,9 @@ zoneinfo64:table(nofallback) {
+     typeMap:bin { "0102010201020102010201020102010201020102010201020102010201" }
+   } //Z#84
+   /* America/Belize */ :table {
+-    trans:intvector { -1822500432, -1616954400, -1606069800, -1585504800, -1574015400, -1554055200, -1542565800, -1522605600, -1511116200, -1490551200, -1479666600, -1459101600, -1448217000, -1427652000, -1416162600, -1396202400, -1384713000, -1364752800, -1353263400, -1333303200, -1321813800, -1301248800, -1290364200, -1269799200, -1258914600, -1238349600, -1226860200, -1206900000, -1195410600, -1175450400, -1163961000, -1143396000, -1132511400, -1111946400, -1101061800, -1080496800, -1069612200, -1049047200, -1037557800, -1017597600, -1006108200, -986148000, -974658600, -954093600, -943209000, -922644000, -911759400, -891194400, -879705000, -859744800, -848255400, 123919200, 129618000, 409039200, 413874000 }
++    trans:intvector { -1822500432, -1616954400, -1606069800, -1585504800, -1574015400, -1554055200, -1542565800, -1522605600, -1511116200, -1490551200, -1479666600, -1459101600, -1448217000, -1427652000, -1416162600, -1396202400, -1384713000, -1364752800, -1353263400, -1333303200, -1321813800, -1301248800, -1290364200, -1269799200, -1258914600, -1238349600, -1226860200, -1206900000, -1195410600, -1175450400, -1163961000, -1143396000, -1132511400, -1111946400, -1101061800, -1080496800, -1069612200, -1049047200, -1037557800, -1017597600, -1006108200, -986148000, -974658600, -954093600, -943209000, -922644000, -911759400, -891194400, -879705000, -868212000, -758746800, -701892000, -690402600, -670442400, -658953000, -638992800, -627503400, -606938400, -596053800, -575488800, -564604200, -544039200, -532549800, -512589600, -501100200, -481140000, -469650600, -449690400, -438201000, -417636000, -406751400, -386186400, -375301800, -354736800, -343247400, -323287200, -311797800, -291837600, -280348200, -259783200, -248898600, -228333600, -217449000, -196884000, -185999400, -165434400, -153945000, -133984800, -122495400, -102535200, -91045800, -70480800, -59596200, 123919200, 129618000, 409039200, 413874000 }
+     typeOffsets:intvector { -21168, 0, -21600, 0, -21600, 1800, -21600, 3600 }
+-    typeMap:bin { "01020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020103010301" }
++    typeMap:bin { "01020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201030102010201020102010201020102010201020102010201020102010201020102010201020102010201020103010301" }
+   } //Z#85
+   /* America/Blanc-Sablon */ :table {
+     transPre32:intvector { -1, 1581070604 }
+@@ -428,9 +428,9 @@ zoneinfo64:table(nofallback) {
+   } //Z#106
+   /* America/Dawson */ :table {
+     transPre32:intvector { -1, 2105970356 }
+-    trans:intvector { -1632056400, -1615125600, -1596978000, -1583164800, -880203600, -765381600, -147884400, -131554800, 120646800, 325677600, 341398800, 357127200, 372848400, 388576800, 404902800, 420026400, 436352400, 452080800, 467802000, 483530400, 499251600, 514980000, 530701200, 544615200, 562150800, 576064800, 594205200, 607514400, 625654800, 638964000, 657104400, 671018400, 688554000, 702468000, 720003600, 733917600, 752058000, 765367200, 783507600, 796816800, 814957200, 828871200, 846406800, 860320800, 877856400, 891770400, 909306000, 923220000, 941360400, 954669600, 972810000, 986119200, 1004259600, 1018173600, 1035709200, 1049623200, 1067158800, 1081072800, 1099213200, 1112522400, 1130662800, 1143972000, 1162112400, 1173607200, 1194166800, 1205056800, 1225616400, 1236506400, 1257066000, 1268560800, 1289120400, 1300010400, 1320570000, 1331460000, 1352019600, 1362909600, 1383469200, 1394359200, 1414918800, 1425808800, 1446368400, 1457863200, 1478422800, 1489312800, 1509872400, 1520762400, 1541322000, 1552212000, 1572771600, 1583661600 }
++    trans:intvector { -1632056400, -1615125600, -1596978000, -1583164800, -880203600, -765381600, -147884400, -131554800, 120646800, 325677600, 341398800, 357127200, 372848400, 388576800, 404902800, 420026400, 436352400, 452080800, 467802000, 483530400, 499251600, 514980000, 530701200, 544615200, 562150800, 576064800, 594205200, 607514400, 625654800, 638964000, 657104400, 671018400, 688554000, 702468000, 720003600, 733917600, 752058000, 765367200, 783507600, 796816800, 814957200, 828871200, 846406800, 860320800, 877856400, 891770400, 909306000, 923220000, 941360400, 954669600, 972810000, 986119200, 1004259600, 1018173600, 1035709200, 1049623200, 1067158800, 1081072800, 1099213200, 1112522400, 1130662800, 1143972000, 1162112400, 1173607200, 1194166800, 1205056800, 1225616400, 1236506400, 1257066000, 1268560800, 1289120400, 1300010400, 1320570000, 1331460000, 1352019600, 1362909600, 1383469200, 1394359200, 1414918800, 1425808800, 1446368400, 1457863200, 1478422800, 1489312800, 1509872400, 1520762400, 1541322000, 1552212000, 1572771600, 1583661600, 1604214000 }
+     typeOffsets:intvector { -33460, 0, -32400, 0, -32400, 3600, -32400, 7200, -28800, 0, -28800, 3600, -25200, 0 }
+-    typeMap:bin { "01020102010201030104050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050406" }
++    typeMap:bin { "0102010201020103010405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040506" }
+   } //Z#107
+   /* America/Dawson_Creek */ :table {
+     transPre32:intvector { -1, 1581085752 }
+@@ -510,9 +510,9 @@ zoneinfo64:table(nofallback) {
+   } //Z#121
+   /* America/Grand_Turk */ :table {
+     transPre32:intvector { -1, 1770462768 }
+-    trans:intvector { -1827687170, 294217200, 309938400, 325666800, 341388000, 357116400, 372837600, 388566000, 404892000, 420015600, 436341600, 452070000, 467791200, 483519600, 499240800, 514969200, 530690400, 544604400, 562140000, 576054000, 594194400, 607503600, 625644000, 638953200, 657093600, 671007600, 688543200, 702457200, 719992800, 733906800, 752047200, 765356400, 783496800, 796806000, 814946400, 828860400, 846396000, 860310000, 877845600, 891759600, 909295200, 923209200, 941349600, 954658800, 972799200, 986108400, 1004248800, 1018162800, 1035698400, 1049612400, 1067148000, 1081062000, 1099202400, 1112511600, 1130652000, 1143961200, 1162101600, 1173596400, 1194156000, 1205046000, 1225605600, 1236495600, 1257055200, 1268550000, 1289109600, 1299999600, 1320559200, 1331449200, 1352008800, 1362898800, 1383458400, 1394348400, 1414908000, 1425798000, 1446357600, 1520751600, 1541311200 }
++    trans:intvector { -1827687170, 294217200, 309938400, 325666800, 341388000, 357116400, 372837600, 388566000, 404892000, 420015600, 436341600, 452070000, 467791200, 483519600, 499240800, 514969200, 530690400, 544604400, 562140000, 576054000, 594194400, 607503600, 625644000, 638953200, 657093600, 671007600, 688543200, 702457200, 719992800, 733906800, 752047200, 765356400, 783496800, 796806000, 814946400, 828860400, 846396000, 860310000, 877845600, 891759600, 909295200, 923209200, 941349600, 954658800, 972799200, 986108400, 1004248800, 1018162800, 1035698400, 1049612400, 1067148000, 1081062000, 1099202400, 1112511600, 1130652000, 1143961200, 1162101600, 1173596400, 1194156000, 1205046000, 1225605600, 1236495600, 1257055200, 1268550000, 1289109600, 1299999600, 1320559200, 1331449200, 1352008800, 1362898800, 1383458400, 1394348400, 1414908000, 1425798000, 1520751600, 1541311200 }
+     typeOffsets:intvector { -17072, 0, -18430, 0, -18000, 0, -18000, 3600, -14400, 0 }
+-    typeMap:bin { "010203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203040302" }
++    typeMap:bin { "0102030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302040302" }
+     finalRule { "US" }
+     finalRaw:int { -18000 }
+     finalYear:int { 2019 }
+@@ -819,9 +819,9 @@ zoneinfo64:table(nofallback) {
+   /* America/Montreal */ :int { 218 } //Z#170
+   /* America/Montserrat */ :int { 187 } //Z#171
+   /* America/Nassau */ :table {
+-    trans:intvector { -1825095030, -179341200, -163620000, -147891600, -131565600, -116442000, -100116000, -84387600, -68666400, -52938000, -37216800, -21488400, -5767200, 9961200, 25682400, 41410800, 57736800, 73465200, 89186400, 104914800, 120636000, 136364400, 152085600, 167814000, 183535200, 199263600, 215589600, 230713200, 247039200, 262767600, 278488800, 294217200, 309938400, 325666800, 341388000, 357116400, 372837600, 388566000, 404892000, 420015600, 436341600, 452070000, 467791200, 483519600, 499240800, 514969200, 530690400, 544604400, 562140000, 576054000, 594194400, 607503600, 625644000, 638953200, 657093600, 671007600, 688543200, 702457200, 719992800, 733906800, 752047200, 765356400, 783496800, 796806000, 814946400, 828860400, 846396000, 860310000, 877845600, 891759600, 909295200, 923209200, 941349600, 954658800, 972799200, 986108400, 1004248800, 1018162800, 1035698400, 1049612400, 1067148000, 1081062000, 1099202400, 1112511600, 1130652000, 1143961200, 1162101600, 1173596400, 1194156000 }
++    trans:intvector { -1825095030, -873140400, -788904000, -786222000, -763848000, -179341200, -163620000, -147891600, -131565600, -116442000, -100116000, -84387600, -68666400, -52938000, -37216800, -21488400, -5767200, 9961200, 25682400, 41410800, 57736800, 73465200, 89186400, 104914800, 120636000, 136364400, 152085600, 167814000, 183535200, 199263600, 215589600, 230713200, 247039200, 262767600, 278488800, 294217200, 309938400, 325666800, 341388000, 357116400, 372837600, 388566000, 404892000, 420015600, 436341600, 452070000, 467791200, 483519600, 499240800, 514969200, 530690400, 544604400, 562140000, 576054000, 594194400, 607503600, 625644000, 638953200, 657093600, 671007600, 688543200, 702457200, 719992800, 733906800, 752047200, 765356400, 783496800, 796806000, 814946400, 828860400, 846396000, 860310000, 877845600, 891759600, 909295200, 923209200, 941349600, 954658800, 972799200, 986108400, 1004248800, 1018162800, 1035698400, 1049612400, 1067148000, 1081062000, 1099202400, 1112511600, 1130652000, 1143961200, 1162101600, 1173596400, 1194156000 }
+     typeOffsets:intvector { -18570, 0, -18000, 0, -18000, 3600 }
+-    typeMap:bin { "0102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201" }
++    typeMap:bin { "010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201" }
+     finalRule { "US" }
+     finalRaw:int { -18000 }
+     finalYear:int { 2008 }
+@@ -1127,9 +1127,9 @@ zoneinfo64:table(nofallback) {
+   /* America/Virgin */ :int { 187 } //Z#221
+   /* America/Whitehorse */ :table {
+     transPre32:intvector { -1, 2105969308 }
+-    trans:intvector { -1632056400, -1615125600, -1596978000, -1583164800, -880203600, -765381600, -147884400, -131554800, -81961200, 325677600, 341398800, 357127200, 372848400, 388576800, 404902800, 420026400, 436352400, 452080800, 467802000, 483530400, 499251600, 514980000, 530701200, 544615200, 562150800, 576064800, 594205200, 607514400, 625654800, 638964000, 657104400, 671018400, 688554000, 702468000, 720003600, 733917600, 752058000, 765367200, 783507600, 796816800, 814957200, 828871200, 846406800, 860320800, 877856400, 891770400, 909306000, 923220000, 941360400, 954669600, 972810000, 986119200, 1004259600, 1018173600, 1035709200, 1049623200, 1067158800, 1081072800, 1099213200, 1112522400, 1130662800, 1143972000, 1162112400, 1173607200, 1194166800, 1205056800, 1225616400, 1236506400, 1257066000, 1268560800, 1289120400, 1300010400, 1320570000, 1331460000, 1352019600, 1362909600, 1383469200, 1394359200, 1414918800, 1425808800, 1446368400, 1457863200, 1478422800, 1489312800, 1509872400, 1520762400, 1541322000, 1552212000, 1572771600, 1583661600 }
++    trans:intvector { -1632056400, -1615125600, -1596978000, -1583164800, -880203600, -765381600, -147884400, -131554800, -81961200, 325677600, 341398800, 357127200, 372848400, 388576800, 404902800, 420026400, 436352400, 452080800, 467802000, 483530400, 499251600, 514980000, 530701200, 544615200, 562150800, 576064800, 594205200, 607514400, 625654800, 638964000, 657104400, 671018400, 688554000, 702468000, 720003600, 733917600, 752058000, 765367200, 783507600, 796816800, 814957200, 828871200, 846406800, 860320800, 877856400, 891770400, 909306000, 923220000, 941360400, 954669600, 972810000, 986119200, 1004259600, 1018173600, 1035709200, 1049623200, 1067158800, 1081072800, 1099213200, 1112522400, 1130662800, 1143972000, 1162112400, 1173607200, 1194166800, 1205056800, 1225616400, 1236506400, 1257066000, 1268560800, 1289120400, 1300010400, 1320570000, 1331460000, 1352019600, 1362909600, 1383469200, 1394359200, 1414918800, 1425808800, 1446368400, 1457863200, 1478422800, 1489312800, 1509872400, 1520762400, 1541322000, 1552212000, 1572771600, 1583661600, 1604214000 }
+     typeOffsets:intvector { -32412, 0, -32400, 0, -32400, 3600, -32400, 7200, -28800, 0, -28800, 3600, -25200, 0 }
+-    typeMap:bin { "01020102010201030104050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050406" }
++    typeMap:bin { "0102010201020103010405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040504050405040506" }
+     links:intvector { 222, 393 }
+   } //Z#222
+   /* America/Winnipeg */ :table {
+@@ -1160,9 +1160,9 @@ zoneinfo64:table(nofallback) {
+     finalYear:int { 2008 }
+   } //Z#225
+   /* Antarctica/Casey */ :table {
+-    trans:intvector { -31536000, 1255802400, 1267714800, 1319738400, 1329843600, 1477065600, 1520701200 }
++    trans:intvector { -31536000, 1255802400, 1267714800, 1319738400, 1329843600, 1477065600, 1520701200, 1538856000, 1552752000, 1570129200, 1583596800, 1601740860 }
+     typeOffsets:intvector { 0, 0, 28800, 0, 39600, 0 }
+-    typeMap:bin { "01020102010201" }
++    typeMap:bin { "010201020102010201020102" }
+   } //Z#226
+   /* Antarctica/Davis */ :table {
+     trans:intvector { -409190400, -163062000, -28857600, 1255806000, 1268251200, 1319742000, 1329854400 }
+@@ -1176,9 +1176,12 @@ zoneinfo64:table(nofallback) {
+   } //Z#228
+   /* Antarctica/Macquarie */ :table {
+     transPre32:intvector { -1, 2080708096 }
+-    trans:intvector { -1680508800, -1665392400, -1601719200, -687052800, -71136000, -55411200, -37267200, -25776000, -5817600, 5673600, 25632000, 37728000, 57686400, 67968000, 89136000, 100022400, 120585600, 131472000, 152035200, 162921600, 183484800, 194976000, 215539200, 226425600, 246988800, 257875200, 278438400, 289324800, 309888000, 320774400, 341337600, 352224000, 372787200, 386092800, 404841600, 417542400, 436291200, 447177600, 467740800, 478627200, 499190400, 510076800, 530035200, 542736000, 562089600, 574790400, 594144000, 606240000, 625593600, 637689600, 657043200, 670348800, 686678400, 701798400, 718128000, 733248000, 749577600, 764697600, 781027200, 796147200, 812476800, 828201600, 844531200, 859651200, 875980800, 891100800, 907430400, 922550400, 938880000, 954000000, 967305600, 985449600, 1002384000, 1017504000, 1033833600, 1048953600, 1065283200, 1080403200, 1096732800, 1111852800, 1128182400, 1143907200, 1159632000, 1174752000, 1191686400, 1207411200, 1223136000, 1238860800, 1254585600, 1270310400 }
+-    typeOffsets:intvector { 0, 0, 36000, 0, 36000, 3600, 39600, 0 }
+-    typeMap:bin { "01020100010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010203" }
++    trans:intvector { -1680508800, -1665388800, -1601719200, -687052800, -71136000, -55411200, -37267200, -25776000, -5817600, 5673600, 25632000, 37728000, 57686400, 67968000, 89136000, 100022400, 120585600, 131472000, 152035200, 162921600, 183484800, 194976000, 215539200, 226425600, 246988800, 257875200, 278438400, 289324800, 309888000, 320774400, 341337600, 352224000, 372787200, 386092800, 404841600, 417542400, 436291200, 447177600, 467740800, 478627200, 499190400, 510076800, 530035200, 542736000, 562089600, 574790400, 594144000, 606240000, 625593600, 637689600, 657043200, 670348800, 686678400, 701798400, 718128000, 733248000, 749577600, 764697600, 781027200, 796147200, 812476800, 828201600, 844531200, 859651200, 875980800, 891100800, 907430400, 922550400, 938880000, 954000000, 967305600, 985449600, 1002384000, 1017504000, 1033833600, 1048953600, 1065283200, 1080403200, 1096732800, 1111852800, 1128182400, 1143907200, 1159632000, 1174752000, 1191686400, 1207411200, 1223136000, 1238860800, 1254585600, 1301760000, 1317484800 }
++    typeOffsets:intvector { 0, 0, 36000, 0, 36000, 3600 }
++    typeMap:bin { "0102010001020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102" }
++    finalRule { "AT" }
++    finalRaw:int { 36000 }
++    finalYear:int { 2012 }
+   } //Z#229
+   /* Antarctica/Mawson */ :table {
+     trans:intvector { -501206400, 1255809600 }
+@@ -1360,22 +1363,22 @@ zoneinfo64:table(nofallback) {
+   } //Z#268
+   /* Asia/Gaza */ :table {
+     transPre32:intvector { -1, 2109557424 }
+-    trans:intvector { -933645600, -857358000, -844300800, -825822000, -812685600, -794199600, -779853600, -762656400, -748310400, -731127600, -399088800, -386650800, -368330400, -355114800, -336790800, -323654400, -305168400, -292032000, -273632400, -260496000, -242096400, -228960000, -210560400, -197424000, -178938000, -165801600, -147402000, -134265600, -115866000, -102643200, -84330000, -81313200, 142380000, 150843600, 167176800, 178664400, 334015200, 337644000, 452556000, 462232800, 482277600, 495579600, 516751200, 526424400, 545436000, 558478800, 576626400, 589323600, 609890400, 620773200, 638316000, 651618000, 669765600, 683672400, 701820000, 715726800, 733701600, 747176400, 765151200, 778021200, 796600800, 810075600, 828655200, 843170400, 860104800, 874620000, 891554400, 906069600, 924213600, 939934800, 956268000, 971989200, 987717600, 1003438800, 1019167200, 1034888400, 1050616800, 1066338000, 1082066400, 1096581600, 1113516000, 1128380400, 1143842400, 1158872400, 1175378400, 1189638000, 1206655200, 1219957200, 1238104800, 1252015200, 1269640860, 1281474000, 1301608860, 1312146000, 1333058400, 1348178400, 1364508000, 1380229200, 1395957600, 1414098000, 1427493600, 1445547600, 1458946800, 1477692000, 1490396400, 1509141600, 1521846000, 1540591200, 1553810400, 1572040800 }
++    trans:intvector { -933638400, -923097600, -919036800, -857347200, -844300800, -825811200, -812678400, -794188800, -779846400, -762652800, -748310400, -731116800, -399088800, -386650800, -368330400, -355114800, -336790800, -323654400, -305168400, -292032000, -273632400, -260496000, -242096400, -228960000, -210560400, -197424000, -178938000, -165801600, -147402000, -134265600, -115866000, -102643200, -84330000, -81313200, 142380000, 150843600, 167176800, 178664400, 334101600, 337730400, 452642400, 462319200, 482277600, 494370000, 516751200, 526424400, 545436000, 558478800, 576626400, 589323600, 609890400, 620773200, 638316000, 651618000, 669765600, 683672400, 701820000, 715726800, 733701600, 747176400, 765151200, 778021200, 796600800, 810075600, 828655200, 843170400, 860104800, 874620000, 891554400, 906069600, 924213600, 939934800, 956268000, 971989200, 987717600, 1003438800, 1019167200, 1034888400, 1050616800, 1066338000, 1082066400, 1096581600, 1113516000, 1128380400, 1143842400, 1158872400, 1175378400, 1189638000, 1206655200, 1219957200, 1238104800, 1252015200, 1269640860, 1281474000, 1301608860, 1312146000, 1333058400, 1348178400, 1364508000, 1380229200, 1395957600, 1414098000, 1427493600, 1445551200, 1458946800, 1477692000, 1490396400, 1509141600, 1521846000, 1540591200, 1553810400, 1572037200, 1585346400, 1603490400 }
+     typeOffsets:intvector { 8272, 0, 7200, 0, 7200, 3600 }
+-    typeMap:bin { "010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201" }
++    typeMap:bin { "01020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201" }
+     finalRule { "Palestine" }
+     finalRaw:int { 7200 }
+-    finalYear:int { 2020 }
++    finalYear:int { 2021 }
+   } //Z#269
+   /* Asia/Harbin */ :int { 315 } //Z#270
+   /* Asia/Hebron */ :table {
+     transPre32:intvector { -1, 2109557273 }
+-    trans:intvector { -933645600, -857358000, -844300800, -825822000, -812685600, -794199600, -779853600, -762656400, -748310400, -731127600, -399088800, -386650800, -368330400, -355114800, -336790800, -323654400, -305168400, -292032000, -273632400, -260496000, -242096400, -228960000, -210560400, -197424000, -178938000, -165801600, -147402000, -134265600, -115866000, -102643200, -84330000, -81313200, 142380000, 150843600, 167176800, 178664400, 334015200, 337644000, 452556000, 462232800, 482277600, 495579600, 516751200, 526424400, 545436000, 558478800, 576626400, 589323600, 609890400, 620773200, 638316000, 651618000, 669765600, 683672400, 701820000, 715726800, 733701600, 747176400, 765151200, 778021200, 796600800, 810075600, 828655200, 843170400, 860104800, 874620000, 891554400, 906069600, 924213600, 939934800, 956268000, 971989200, 987717600, 1003438800, 1019167200, 1034888400, 1050616800, 1066338000, 1082066400, 1096581600, 1113516000, 1128380400, 1143842400, 1158872400, 1175378400, 1189638000, 1206655200, 1220216400, 1238104800, 1252015200, 1269554400, 1281474000, 1301608860, 1312146000, 1314655200, 1317330000, 1333058400, 1348178400, 1364508000, 1380229200, 1395957600, 1414098000, 1427493600, 1445547600, 1458946800, 1477692000, 1490396400, 1509141600, 1521846000, 1540591200, 1553810400, 1572040800 }
++    trans:intvector { -933638400, -923097600, -919036800, -857347200, -844300800, -825811200, -812678400, -794188800, -779846400, -762652800, -748310400, -731116800, -399088800, -386650800, -368330400, -355114800, -336790800, -323654400, -305168400, -292032000, -273632400, -260496000, -242096400, -228960000, -210560400, -197424000, -178938000, -165801600, -147402000, -134265600, -115866000, -102643200, -84330000, -81313200, 142380000, 150843600, 167176800, 178664400, 334101600, 337730400, 452642400, 462319200, 482277600, 494370000, 516751200, 526424400, 545436000, 558478800, 576626400, 589323600, 609890400, 620773200, 638316000, 651618000, 669765600, 683672400, 701820000, 715726800, 733701600, 747176400, 765151200, 778021200, 796600800, 810075600, 828655200, 843170400, 860104800, 874620000, 891554400, 906069600, 924213600, 939934800, 956268000, 971989200, 987717600, 1003438800, 1019167200, 1034888400, 1050616800, 1066338000, 1082066400, 1096581600, 1113516000, 1128380400, 1143842400, 1158872400, 1175378400, 1189638000, 1206655200, 1220216400, 1238104800, 1252015200, 1269554400, 1281474000, 1301608860, 1312146000, 1314655200, 1317330000, 1333058400, 1348178400, 1364508000, 1380229200, 1395957600, 1414098000, 1427493600, 1445551200, 1458946800, 1477692000, 1490396400, 1509141600, 1521846000, 1540591200, 1553810400, 1572037200, 1585346400, 1603490400 }
+     typeOffsets:intvector { 8423, 0, 7200, 0, 7200, 3600 }
+-    typeMap:bin { "0102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201" }
++    typeMap:bin { "010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201" }
+     finalRule { "Palestine" }
+     finalRaw:int { 7200 }
+-    finalYear:int { 2020 }
++    finalYear:int { 2021 }
+   } //Z#271
+   /* Asia/Ho_Chi_Minh */ :table {
+     trans:intvector { -2004073600, -1851577590, -852105600, -782643600, -767869200, -718095600, -457776000, -315648000, 171820800 }
+@@ -1412,9 +1415,9 @@ zoneinfo64:table(nofallback) {
+   } //Z#278
+   /* Asia/Jerusalem */ :table {
+     transPre32:intvector { -1, 1454818042 }
+-    trans:intvector { -1641003640, -933645600, -857358000, -844300800, -825822000, -812685600, -794199600, -779853600, -762656400, -748310400, -731127600, -681962400, -673243200, -667962000, -652327200, -636426000, -622087200, -608947200, -591847200, -572486400, -558576000, -542851200, -527731200, -514425600, -490845600, -482986800, -459475200, -451537200, -428551200, -418262400, -400032000, -387428400, 142380000, 150843600, 167176800, 178664400, 334015200, 337644000, 452556000, 462232800, 482277600, 495579600, 516751200, 526424400, 545436000, 558478800, 576626400, 589323600, 609890400, 620773200, 638316000, 651618000, 669765600, 683672400, 701820000, 715726800, 733701600, 747176400, 765151200, 778021200, 796600800, 810075600, 826840800, 842821200, 858895200, 874184400, 890344800, 905029200, 923011200, 936313200, 955670400, 970783200, 986770800, 1001282400, 1017356400, 1033941600, 1048806000, 1065132000, 1081292400, 1095804000, 1112313600, 1128812400, 1143763200, 1159657200, 1175212800, 1189897200, 1206662400, 1223161200, 1238112000, 1254006000, 1269561600, 1284246000, 1301616000, 1317510000, 1333065600, 1348354800, 1364515200, 1382828400 }
++    trans:intvector { -1641003640, -933638400, -923097600, -919036800, -857347200, -844300800, -825811200, -812678400, -794188800, -779846400, -762652800, -748310400, -731116800, -681955200, -673228800, -667958400, -652320000, -636422400, -622080000, -608947200, -591840000, -572486400, -558576000, -542851200, -527731200, -514425600, -490838400, -482976000, -459388800, -451526400, -428544000, -418262400, -400118400, -387417600, 142380000, 150843600, 167176800, 178664400, 334101600, 337730400, 452642400, 462319200, 482277600, 494370000, 516751200, 526424400, 545436000, 558478800, 576626400, 589323600, 609890400, 620773200, 638316000, 651618000, 669765600, 683672400, 701820000, 715726800, 733701600, 747176400, 765151200, 778021200, 796600800, 810075600, 826840800, 842821200, 858895200, 874184400, 890344800, 905029200, 923011200, 936313200, 955670400, 970783200, 986770800, 1001282400, 1017356400, 1033941600, 1048806000, 1065132000, 1081292400, 1095804000, 1112313600, 1128812400, 1143763200, 1159657200, 1175212800, 1189897200, 1206662400, 1223161200, 1238112000, 1254006000, 1269561600, 1284246000, 1301616000, 1317510000, 1333065600, 1348354800, 1364515200, 1382828400 }
+     typeOffsets:intvector { 8454, 0, 7200, 0, 7200, 3600, 7200, 7200, 8440, 0 }
+-    typeMap:bin { "040102010201020102010201030201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201" }
++    typeMap:bin { "0401020102010201020102010201030201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201" }
+     finalRule { "Zion" }
+     finalRaw:int { 7200 }
+     finalYear:int { 2014 }
+@@ -1701,9 +1704,9 @@ zoneinfo64:table(nofallback) {
+     finalYear:int { 1997 }
+   } //Z#338
+   /* Atlantic/Bermuda */ :table {
+-    trans:intvector { -1262281242, 136360800, 152082000, 167810400, 183531600, 199260000, 215586000, 230709600, 247035600, 262764000, 278485200, 294213600, 309934800, 325663200, 341384400, 357112800, 372834000, 388562400, 404888400, 420012000, 436338000, 452066400, 467787600, 483516000, 499237200, 514965600, 530686800, 544600800, 562136400, 576050400, 594190800, 607500000, 625640400, 638949600, 657090000, 671004000, 688539600, 702453600, 719989200, 733903200, 752043600, 765352800, 783493200, 796802400, 814942800, 828856800, 846392400, 860306400, 877842000, 891756000, 909291600, 923205600, 941346000, 954655200, 972795600, 986104800, 1004245200, 1018159200, 1035694800, 1049608800, 1067144400, 1081058400, 1099198800, 1112508000, 1130648400, 1143957600, 1162098000, 1173592800, 1194152400 }
+-    typeOffsets:intvector { -15558, 0, -14400, 0, -14400, 3600 }
+-    typeMap:bin { "010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201" }
++    trans:intvector { -1664307642, -1648932042, -1632080442, -1618692042, -1262281242, -882727200, -858538800, -845229600, -825879600, -814384800, -793825200, -782935200, -762375600, -713988000, -703710000, -681933600, -672865200, -650484000, -641415600, -618429600, -609966000, -586980000, -578516400, -555530400, -546462000, -429127200, -415825200, 136360800, 152082000, 167810400, 183531600, 199260000, 215586000, 230709600, 247035600, 262764000, 278485200, 294213600, 309934800, 325663200, 341384400, 357112800, 372834000, 388562400, 404888400, 420012000, 436338000, 452066400, 467787600, 483516000, 499237200, 514965600, 530686800, 544600800, 562136400, 576050400, 594190800, 607500000, 625640400, 638949600, 657090000, 671004000, 688539600, 702453600, 719989200, 733903200, 752043600, 765352800, 783493200, 796802400, 814942800, 828856800, 846392400, 860306400, 877842000, 891756000, 909291600, 923205600, 941346000, 954655200, 972795600, 986104800, 1004245200, 1018159200, 1035694800, 1049608800, 1067144400, 1081058400, 1099198800, 1112508000, 1130648400, 1143957600, 1162098000, 1173592800, 1194152400 }
++    typeOffsets:intvector { -15558, 0, -15558, 3600, -14400, 0, -14400, 3600 }
++    typeMap:bin { "0100010002030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302" }
+     finalRule { "US" }
+     finalRaw:int { -14400 }
+     finalYear:int { 2008 }
+@@ -1760,7 +1763,7 @@ zoneinfo64:table(nofallback) {
+   /* Australia/ACT */ :int { 368 } //Z#350
+   /* Australia/Adelaide */ :table {
+     transPre32:intvector { -1, 1930857236, -1, 2064778096 }
+-    trans:intvector { -1672565340, -1665390600, -883639800, -876126600, -860398200, -844677000, -828343800, -813227400, 57688200, 67969800, 89137800, 100024200, 120587400, 131473800, 152037000, 162923400, 183486600, 194977800, 215541000, 226427400, 246990600, 257877000, 278440200, 289326600, 309889800, 320776200, 341339400, 352225800, 372789000, 384280200, 404843400, 415729800, 436293000, 447179400, 467742600, 478629000, 499192200, 511288200, 530037000, 542737800, 562091400, 574792200, 594145800, 606241800, 625595400, 637691400, 657045000, 667931400, 688494600, 701195400, 719944200, 731435400, 751998600, 764094600, 783448200, 796149000, 814897800, 828203400, 846347400, 859653000, 877797000, 891102600, 909246600, 922552200, 941301000, 954001800, 972750600, 985451400, 1004200200, 1017505800, 1035649800, 1048955400, 1067099400, 1080405000, 1099153800, 1111854600, 1130603400, 1143909000, 1162053000, 1174753800, 1193502600, 1207413000, 1223137800 }
++    trans:intvector { -1672558200, -1665387000, -883639800, -876123000, -860398200, -844673400, -828343800, -813223800, 57688200, 67969800, 89137800, 100024200, 120587400, 131473800, 152037000, 162923400, 183486600, 194977800, 215541000, 226427400, 246990600, 257877000, 278440200, 289326600, 309889800, 320776200, 341339400, 352225800, 372789000, 384280200, 404843400, 415729800, 436293000, 447179400, 467742600, 478629000, 499192200, 511288200, 530037000, 542737800, 562091400, 574792200, 594145800, 606241800, 625595400, 637691400, 657045000, 667931400, 688494600, 701195400, 719944200, 731435400, 751998600, 764094600, 783448200, 796149000, 814897800, 828203400, 846347400, 859653000, 877797000, 891102600, 909246600, 922552200, 941301000, 954001800, 972750600, 985451400, 1004200200, 1017505800, 1035649800, 1048955400, 1067099400, 1080405000, 1099153800, 1111854600, 1130603400, 1143909000, 1162053000, 1174753800, 1193502600, 1207413000, 1223137800 }
+     typeOffsets:intvector { 33260, 0, 32400, 0, 34200, 0, 34200, 3600 }
+     typeMap:bin { "01020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203" }
+     finalRule { "AS" }
+@@ -1770,14 +1773,14 @@ zoneinfo64:table(nofallback) {
+   } //Z#351
+   /* Australia/Brisbane */ :table {
+     transPre32:intvector { -1, 1928175368 }
+-    trans:intvector { -1672567140, -1665392400, -883641600, -876128400, -860400000, -844678800, -828345600, -813229200, 57686400, 67968000, 625593600, 636480000, 657043200, 667929600, 688492800, 699379200 }
++    trans:intvector { -1672560000, -1665388800, -883641600, -876124800, -860400000, -844675200, -828345600, -813225600, 57686400, 67968000, 625593600, 636480000, 657043200, 667929600, 688492800, 699379200 }
+     typeOffsets:intvector { 36728, 0, 36000, 0, 36000, 3600 }
+     typeMap:bin { "0102010201020102010201020102010201" }
+     links:intvector { 352, 366 }
+   } //Z#352
+   /* Australia/Broken_Hill */ :table {
+     transPre32:intvector { -1, 1930856548, -1, 1980016096, -1, 2064778096 }
+-    trans:intvector { -1672565340, -1665390600, -883639800, -876126600, -860398200, -844677000, -828343800, -813227400, 57688200, 67969800, 89137800, 100024200, 120587400, 131473800, 152037000, 162923400, 183486600, 194977800, 215541000, 226427400, 246990600, 257877000, 278440200, 289326600, 309889800, 320776200, 341339400, 352225800, 372789000, 386699400, 404843400, 415729800, 436293000, 447179400, 467742600, 478629000, 499192200, 511288200, 530037000, 542737800, 562091400, 574792200, 594145800, 606241800, 625595400, 636481800, 657045000, 667931400, 688494600, 699381000, 719944200, 731435400, 751998600, 762885000, 783448200, 794334600, 814897800, 828203400, 846347400, 859653000, 877797000, 891102600, 909246600, 922552200, 941301000, 954001800, 972750600, 985451400, 1004200200, 1017505800, 1035649800, 1048955400, 1067099400, 1080405000, 1099153800, 1111854600, 1130603400, 1143909000, 1162053000, 1174753800, 1193502600, 1207413000, 1223137800 }
++    trans:intvector { -1672558200, -1665387000, -883639800, -876123000, -860398200, -844673400, -828343800, -813223800, 57688200, 67969800, 89137800, 100024200, 120587400, 131473800, 152037000, 162923400, 183486600, 194977800, 215541000, 226427400, 246990600, 257877000, 278440200, 289326600, 309889800, 320776200, 341339400, 352225800, 372789000, 386699400, 404843400, 415729800, 436293000, 447179400, 467742600, 478629000, 499192200, 511288200, 530037000, 542737800, 562091400, 574792200, 594145800, 606241800, 625595400, 636481800, 657045000, 667931400, 688494600, 699381000, 719944200, 731435400, 751998600, 762885000, 783448200, 794334600, 814897800, 828203400, 846347400, 859653000, 877797000, 891102600, 909246600, 922552200, 941301000, 954001800, 972750600, 985451400, 1004200200, 1017505800, 1035649800, 1048955400, 1067099400, 1080405000, 1099153800, 1111854600, 1130603400, 1143909000, 1162053000, 1174753800, 1193502600, 1207413000, 1223137800 }
+     typeOffsets:intvector { 33948, 0, 32400, 0, 34200, 0, 34200, 3600, 36000, 0 }
+     typeMap:bin { "0401020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203020302030203" }
+     finalRule { "AS" }
+@@ -1786,42 +1789,34 @@ zoneinfo64:table(nofallback) {
+     links:intvector { 353, 372 }
+   } //Z#353
+   /* Australia/Canberra */ :int { 368 } //Z#354
+-  /* Australia/Currie */ :table {
+-    transPre32:intvector { -1, 1949172768 }
+-    trans:intvector { -1680508800, -1665392400, -883641600, -876128400, -860400000, -844678800, -828345600, -813229200, 57686400, 67968000, 89136000, 100022400, 120585600, 131472000, 152035200, 162921600, 183484800, 194976000, 215539200, 226425600, 246988800, 257875200, 278438400, 289324800, 309888000, 320774400, 341337600, 352224000, 372787200, 386092800, 404841600, 417542400, 436291200, 447177600, 467740800, 478627200, 499190400, 510076800, 530035200, 542736000, 562089600, 574790400, 594144000, 606240000, 625593600, 637689600, 657043200, 670348800, 686678400, 701798400, 718128000, 733248000, 749577600, 764697600, 781027200, 796147200, 812476800, 828201600, 844531200, 859651200, 875980800, 891100800, 907430400, 922550400, 938880000, 954000000, 967305600, 985449600, 1002384000, 1017504000, 1033833600, 1048953600, 1065283200, 1080403200, 1096732800, 1111852800, 1128182400, 1143907200, 1159632000, 1174752000, 1191686400, 1207411200, 1223136000 }
+-    typeOffsets:intvector { 34528, 0, 36000, 0, 36000, 3600 }
+-    typeMap:bin { "010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102" }
+-    finalRule { "AT" }
+-    finalRaw:int { 36000 }
+-    finalYear:int { 2009 }
+-  } //Z#355
++  /* Australia/Currie */ :int { 358 } //Z#355
+   /* Australia/Darwin */ :table {
+     transPre32:intvector { -1, 1930859096, -1, 2064778096 }
+-    trans:intvector { -1672565340, -1665390600, -883639800, -876126600, -860398200, -844677000, -828343800, -813227400 }
++    trans:intvector { -1672558200, -1665387000, -883639800, -876123000, -860398200, -844673400, -828343800, -813223800 }
+     typeOffsets:intvector { 31400, 0, 32400, 0, 34200, 0, 34200, 3600 }
+     typeMap:bin { "01020302030203020302" }
+     links:intvector { 0, 356, 364 }
+   } //Z#356
+   /* Australia/Eucla */ :table {
+     transPre32:intvector { -1, 1957038768 }
+-    trans:intvector { -1672562640, -1665387900, -883637100, -876123900, -860395500, -844674300, 152039700, 162926100, 436295700, 447182100, 690311700, 699383700, 1165079700, 1174756500, 1193505300, 1206810900, 1224954900, 1238260500 }
++    trans:intvector { -1672555500, -1665384300, -883637100, -876120300, -860395500, -844670700, 152039700, 162926100, 436295700, 447182100, 690311700, 699383700, 1165079700, 1174756500, 1193505300, 1206810900, 1224954900, 1238260500 }
+     typeOffsets:intvector { 30928, 0, 31500, 0, 31500, 3600 }
+     typeMap:bin { "01020102010201020102010201020102010201" }
+   } //Z#357
+   /* Australia/Hobart */ :table {
+     transPre32:intvector { -1, 1949171940 }
+-    trans:intvector { -1680508800, -1665392400, -883641600, -876128400, -860400000, -844678800, -828345600, -813229200, -71136000, -55411200, -37267200, -25776000, -5817600, 5673600, 25632000, 37728000, 57686400, 67968000, 89136000, 100022400, 120585600, 131472000, 152035200, 162921600, 183484800, 194976000, 215539200, 226425600, 246988800, 257875200, 278438400, 289324800, 309888000, 320774400, 341337600, 352224000, 372787200, 386092800, 404841600, 417542400, 436291200, 447177600, 467740800, 478627200, 499190400, 510076800, 530035200, 542736000, 562089600, 574790400, 594144000, 606240000, 625593600, 637689600, 657043200, 670348800, 686678400, 701798400, 718128000, 733248000, 749577600, 764697600, 781027200, 796147200, 812476800, 828201600, 844531200, 859651200, 875980800, 891100800, 907430400, 922550400, 938880000, 954000000, 967305600, 985449600, 1002384000, 1017504000, 1033833600, 1048953600, 1065283200, 1080403200, 1096732800, 1111852800, 1128182400, 1143907200, 1159632000, 1174752000, 1191686400, 1207411200, 1223136000 }
++    trans:intvector { -1680508800, -1665388800, -1646640000, -1635753600, -1615190400, -1604304000, -883641600, -876124800, -860400000, -844675200, -828345600, -813225600, -71136000, -55411200, -37267200, -25776000, -5817600, 5673600, 25632000, 37728000, 57686400, 67968000, 89136000, 100022400, 120585600, 131472000, 152035200, 162921600, 183484800, 194976000, 215539200, 226425600, 246988800, 257875200, 278438400, 289324800, 309888000, 320774400, 341337600, 352224000, 372787200, 386092800, 404841600, 417542400, 436291200, 447177600, 467740800, 478627200, 499190400, 510076800, 530035200, 542736000, 562089600, 574790400, 594144000, 606240000, 625593600, 637689600, 657043200, 670348800, 686678400, 701798400, 718128000, 733248000, 749577600, 764697600, 781027200, 796147200, 812476800, 828201600, 844531200, 859651200, 875980800, 891100800, 907430400, 922550400, 938880000, 954000000, 967305600, 985449600, 1002384000, 1017504000, 1033833600, 1048953600, 1065283200, 1080403200, 1096732800, 1111852800, 1128182400, 1143907200, 1159632000, 1174752000, 1191686400, 1207411200, 1223136000 }
+     typeOffsets:intvector { 35356, 0, 36000, 0, 36000, 3600 }
+-    typeMap:bin { "0102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102" }
++    typeMap:bin { "010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102" }
+     finalRule { "AT" }
+     finalRaw:int { 36000 }
+     finalYear:int { 2009 }
+-    links:intvector { 358, 369 }
++    links:intvector { 355, 358, 369 }
+   } //Z#358
+   /* Australia/LHI */ :int { 361 } //Z#359
+   /* Australia/Lindeman */ :table {
+     transPre32:intvector { -1, 1928176340 }
+-    trans:intvector { -1672567140, -1665392400, -883641600, -876128400, -860400000, -844678800, -828345600, -813229200, 57686400, 67968000, 625593600, 636480000, 657043200, 667929600, 688492800, 699379200, 719942400, 731433600, 751996800, 762883200 }
++    trans:intvector { -1672560000, -1665388800, -883641600, -876124800, -860400000, -844675200, -828345600, -813225600, 57686400, 67968000, 625593600, 636480000, 657043200, 667929600, 688492800, 699379200, 719942400, 731433600, 751996800, 762883200 }
+     typeOffsets:intvector { 35756, 0, 36000, 0, 36000, 3600 }
+     typeMap:bin { "010201020102010201020102010201020102010201" }
+   } //Z#360
+@@ -1837,7 +1832,7 @@ zoneinfo64:table(nofallback) {
+   } //Z#361
+   /* Australia/Melbourne */ :table {
+     transPre32:intvector { -1, 1930855704 }
+-    trans:intvector { -1672567140, -1665392400, -883641600, -876128400, -860400000, -844678800, -828345600, -813229200, 57686400, 67968000, 89136000, 100022400, 120585600, 131472000, 152035200, 162921600, 183484800, 194976000, 215539200, 226425600, 246988800, 257875200, 278438400, 289324800, 309888000, 320774400, 341337600, 352224000, 372787200, 384278400, 404841600, 415728000, 436291200, 447177600, 467740800, 478627200, 499190400, 511286400, 530035200, 542736000, 561484800, 574790400, 594144000, 606240000, 625593600, 637689600, 657043200, 667929600, 688492800, 699379200, 719942400, 731433600, 751996800, 762883200, 783446400, 796147200, 814896000, 828201600, 846345600, 859651200, 877795200, 891100800, 909244800, 922550400, 941299200, 954000000, 967305600, 985449600, 1004198400, 1017504000, 1035648000, 1048953600, 1067097600, 1080403200, 1099152000, 1111852800, 1130601600, 1143907200, 1162051200, 1174752000, 1193500800, 1207411200, 1223136000 }
++    trans:intvector { -1672560000, -1665388800, -883641600, -876124800, -860400000, -844675200, -828345600, -813225600, 57686400, 67968000, 89136000, 100022400, 120585600, 131472000, 152035200, 162921600, 183484800, 194976000, 215539200, 226425600, 246988800, 257875200, 278438400, 289324800, 309888000, 320774400, 341337600, 352224000, 372787200, 384278400, 404841600, 415728000, 436291200, 447177600, 467740800, 478627200, 499190400, 511286400, 530035200, 542736000, 561484800, 574790400, 594144000, 606240000, 625593600, 637689600, 657043200, 667929600, 688492800, 699379200, 719942400, 731433600, 751996800, 762883200, 783446400, 796147200, 814896000, 828201600, 846345600, 859651200, 877795200, 891100800, 909244800, 922550400, 941299200, 954000000, 967305600, 985449600, 1004198400, 1017504000, 1035648000, 1048953600, 1067097600, 1080403200, 1099152000, 1111852800, 1130601600, 1143907200, 1162051200, 1174752000, 1193500800, 1207411200, 1223136000 }
+     typeOffsets:intvector { 34792, 0, 36000, 0, 36000, 3600 }
+     typeMap:bin { "010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102" }
+     finalRule { "AV" }
+@@ -1849,7 +1844,7 @@ zoneinfo64:table(nofallback) {
+   /* Australia/North */ :int { 356 } //Z#364
+   /* Australia/Perth */ :table {
+     transPre32:intvector { -1, 1957041892 }
+-    trans:intvector { -1672559940, -1665385200, -883634400, -876121200, -860392800, -844671600, 152042400, 162928800, 436298400, 447184800, 690314400, 699386400, 1165082400, 1174759200, 1193508000, 1206813600, 1224957600, 1238263200 }
++    trans:intvector { -1672552800, -1665381600, -883634400, -876117600, -860392800, -844668000, 152042400, 162928800, 436298400, 447184800, 690314400, 699386400, 1165082400, 1174759200, 1193508000, 1206813600, 1224957600, 1238263200 }
+     typeOffsets:intvector { 27804, 0, 28800, 0, 28800, 3600 }
+     typeMap:bin { "01020102010201020102010201020102010201" }
+     links:intvector { 365, 371 }
+@@ -1858,7 +1853,7 @@ zoneinfo64:table(nofallback) {
+   /* Australia/South */ :int { 351 } //Z#367
+   /* Australia/Sydney */ :table {
+     transPre32:intvector { -1, 1930854204 }
+-    trans:intvector { -1672567140, -1665392400, -883641600, -876128400, -860400000, -844678800, -828345600, -813229200, 57686400, 67968000, 89136000, 100022400, 120585600, 131472000, 152035200, 162921600, 183484800, 194976000, 215539200, 226425600, 246988800, 257875200, 278438400, 289324800, 309888000, 320774400, 341337600, 352224000, 372787200, 386697600, 404841600, 415728000, 436291200, 447177600, 467740800, 478627200, 499190400, 511286400, 530035200, 542736000, 562089600, 574790400, 594144000, 606240000, 625593600, 636480000, 657043200, 667929600, 688492800, 699379200, 719942400, 731433600, 751996800, 762883200, 783446400, 794332800, 814896000, 828201600, 846345600, 859651200, 877795200, 891100800, 909244800, 922550400, 941299200, 954000000, 967305600, 985449600, 1004198400, 1017504000, 1035648000, 1048953600, 1067097600, 1080403200, 1099152000, 1111852800, 1130601600, 1143907200, 1162051200, 1174752000, 1193500800, 1207411200, 1223136000 }
++    trans:intvector { -1672560000, -1665388800, -883641600, -876124800, -860400000, -844675200, -828345600, -813225600, 57686400, 67968000, 89136000, 100022400, 120585600, 131472000, 152035200, 162921600, 183484800, 194976000, 215539200, 226425600, 246988800, 257875200, 278438400, 289324800, 309888000, 320774400, 341337600, 352224000, 372787200, 386697600, 404841600, 415728000, 436291200, 447177600, 467740800, 478627200, 499190400, 511286400, 530035200, 542736000, 562089600, 574790400, 594144000, 606240000, 625593600, 636480000, 657043200, 667929600, 688492800, 699379200, 719942400, 731433600, 751996800, 762883200, 783446400, 794332800, 814896000, 828201600, 846345600, 859651200, 877795200, 891100800, 909244800, 922550400, 941299200, 954000000, 967305600, 985449600, 1004198400, 1017504000, 1035648000, 1048953600, 1067097600, 1080403200, 1099152000, 1111852800, 1130601600, 1143907200, 1162051200, 1174752000, 1193500800, 1207411200, 1223136000 }
+     typeOffsets:intvector { 36292, 0, 36000, 0, 36000, 3600 }
+     typeMap:bin { "010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102" }
+     finalRule { "AN" }
+@@ -2096,8 +2091,8 @@ zoneinfo64:table(nofallback) {
+     finalYear:int { 1998 }
+   } //Z#449
+   /* Europe/Budapest */ :table {
+-    transPre32:intvector { -1, 1794028316 }
+-    trans:intvector { -1693706400, -1680483600, -1663455600, -1650150000, -1633212000, -1618700400, -1600466400, -1581202800, -906771600, -857257200, -844556400, -828226800, -812502000, -796777200, -778471200, -762660000, -749689200, -733359600, -717634800, -701910000, -686185200, -670460400, -654130800, -639010800, -621990000, -605660400, -492656400, -481168800, -461120400, -449632800, -428547600, -418269600, -397094400, -386809200, 323827200, 338950800, 354675600, 370400400, 386125200, 401850000, 417574800, 433299600, 449024400, 465354000, 481078800, 496803600, 512528400, 528253200, 543978000, 559702800, 575427600, 591152400, 606877200, 622602000, 638326800, 654656400, 670381200, 686106000, 701830800, 717555600, 733280400, 749005200, 764730000, 780454800, 796179600, 811904400, 828234000, 846378000 }
++    transPre32:intvector { -1, 1796706716 }
++    trans:intvector { -1693706400, -1680483600, -1663455600, -1650150000, -1632006000, -1618700400, -1600470000, -1587250800, -1569711600, -1555196400, -906775200, -857257200, -844556400, -828226800, -812502000, -796777200, -778471200, -762656400, -749689200, -733276800, -717634800, -701910000, -686185200, -670460400, -654130800, -639010800, -492656400, -481168800, -461199600, -449708400, -428540400, -418258800, -397090800, -386809200, 323823600, 338943600, 354668400, 370393200, 386118000, 401842800, 417567600, 433292400, 449024400, 465354000, 481078800, 496803600, 512528400, 528253200, 543978000, 559702800, 575427600, 591152400, 606877200, 622602000, 638326800, 654656400, 670381200, 686106000, 701830800, 717555600, 733280400, 749005200, 764730000, 780454800, 796179600, 811904400, 828234000, 846378000 }
+     typeOffsets:intvector { 4580, 0, 3600, 0, 3600, 3600 }
+     typeMap:bin { "010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201" }
+     finalRule { "EU" }
+@@ -2235,8 +2230,8 @@ zoneinfo64:table(nofallback) {
+     typeMap:bin { "0304060201020102060706070607060706070607060706070607060504050405040504050405040504050405040504050405040504050405040504050405040504050406" }
+   } //Z#471
+   /* Europe/Monaco */ :table {
+-    transPre32:intvector { -1, 1808287124 }
+-    trans:intvector { -1855958961, -1689814800, -1680397200, -1665363600, -1648342800, -1635123600, -1616893200, -1604278800, -1585443600, -1574038800, -1552266000, -1539997200, -1520557200, -1507510800, -1490576400, -1470618000, -1459126800, -1444006800, -1427677200, -1411952400, -1396227600, -1379293200, -1364778000, -1348448400, -1333328400, -1316394000, -1301274000, -1284339600, -1269824400, -1253494800, -1238374800, -1221440400, -1206925200, -1191200400, -1175475600, -1160355600, -1143421200, -1127696400, -1111971600, -1096851600, -1080522000, -1063587600, -1049072400, -1033347600, -1017622800, -1002502800, -986173200, -969238800, -950490000, -942012000, -904438800, -891136800, -877827600, -857257200, -844556400, -828226800, -812502000, -796266000, -781052400, -766623600, 196819200, 212540400, 228877200, 243997200, 260326800, 276051600, 291776400, 307501200, 323830800, 338950800, 354675600, 370400400, 386125200, 401850000, 417574800, 433299600, 449024400, 465354000, 481078800, 496803600, 512528400, 528253200, 543978000, 559702800, 575427600, 591152400, 606877200, 622602000, 638326800, 654656400, 670381200, 686106000, 701830800, 717555600, 733280400, 749005200, 764730000, 780454800, 796179600, 811904400, 828234000, 846378000 }
++    transPre32:intvector { -1, 1846648724 }
++    trans:intvector { -1854403761, -1689814800, -1680397200, -1665363600, -1648342800, -1635123600, -1616893200, -1604278800, -1585443600, -1574038800, -1552266000, -1539997200, -1520557200, -1507510800, -1490576400, -1470618000, -1459126800, -1444006800, -1427677200, -1411952400, -1396227600, -1379293200, -1364778000, -1348448400, -1333328400, -1316394000, -1301274000, -1284339600, -1269824400, -1253494800, -1238374800, -1221440400, -1206925200, -1191200400, -1175475600, -1160355600, -1143421200, -1127696400, -1111971600, -1096851600, -1080522000, -1063587600, -1049072400, -1033347600, -1017622800, -1002502800, -986173200, -969238800, -950490000, -942012000, -904438800, -891136800, -877827600, -857257200, -844556400, -828226800, -812502000, -796266000, -781052400, -766623600, 196819200, 212540400, 228877200, 243997200, 260326800, 276051600, 291776400, 307501200, 323830800, 338950800, 354675600, 370400400, 386125200, 401850000, 417574800, 433299600, 449024400, 465354000, 481078800, 496803600, 512528400, 528253200, 543978000, 559702800, 575427600, 591152400, 606877200, 622602000, 638326800, 654656400, 670381200, 686106000, 701830800, 717555600, 733280400, 749005200, 764730000, 780454800, 796179600, 811904400, 828234000, 846378000 }
+     typeOffsets:intvector { 1772, 0, 0, 0, 0, 3600, 0, 7200, 561, 0, 3600, 0, 3600, 3600 }
+     typeMap:bin { "04010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010203020302030203020305060506050605060506050605060506050605060506050605060506050605060506050605060506050605" }
+     finalRule { "EU" }
+@@ -2261,7 +2256,7 @@ zoneinfo64:table(nofallback) {
+     links:intvector { 238, 344, 475 }
+   } //Z#475
+   /* Europe/Paris */ :table {
+-    trans:intvector { -1855958901, -1689814800, -1680397200, -1665363600, -1648342800, -1635123600, -1616893200, -1604278800, -1585443600, -1574038800, -1552266000, -1539997200, -1520557200, -1507510800, -1490576400, -1470618000, -1459126800, -1444006800, -1427677200, -1411952400, -1396227600, -1379293200, -1364778000, -1348448400, -1333328400, -1316394000, -1301274000, -1284339600, -1269824400, -1253494800, -1238374800, -1221440400, -1206925200, -1191200400, -1175475600, -1160355600, -1143421200, -1127696400, -1111971600, -1096851600, -1080522000, -1063587600, -1049072400, -1033347600, -1017622800, -1002502800, -986173200, -969238800, -950490000, -942012000, -932436000, -857257200, -844556400, -828226800, -812502000, -800071200, -796266000, -781052400, -766623600, 196819200, 212540400, 228877200, 243997200, 260326800, 276051600, 291776400, 307501200, 323830800, 338950800, 354675600, 370400400, 386125200, 401850000, 417574800, 433299600, 449024400, 465354000, 481078800, 496803600, 512528400, 528253200, 543978000, 559702800, 575427600, 591152400, 606877200, 622602000, 638326800, 654656400, 670381200, 686106000, 701830800, 717555600, 733280400, 749005200, 764730000, 780454800, 796179600, 811904400, 828234000, 846378000 }
++    trans:intvector { -1855958961, -1689814800, -1680397200, -1665363600, -1648342800, -1635123600, -1616893200, -1604278800, -1585443600, -1574038800, -1552266000, -1539997200, -1520557200, -1507510800, -1490576400, -1470618000, -1459126800, -1444006800, -1427677200, -1411952400, -1396227600, -1379293200, -1364778000, -1348448400, -1333328400, -1316394000, -1301274000, -1284339600, -1269824400, -1253494800, -1238374800, -1221440400, -1206925200, -1191200400, -1175475600, -1160355600, -1143421200, -1127696400, -1111971600, -1096851600, -1080522000, -1063587600, -1049072400, -1033347600, -1017622800, -1002502800, -986173200, -969238800, -950490000, -942012000, -932436000, -857257200, -844556400, -828226800, -812502000, -800071200, -796266000, -781052400, -766623600, 196819200, 212540400, 228877200, 243997200, 260326800, 276051600, 291776400, 307501200, 323830800, 338950800, 354675600, 370400400, 386125200, 401850000, 417574800, 433299600, 449024400, 465354000, 481078800, 496803600, 512528400, 528253200, 543978000, 559702800, 575427600, 591152400, 606877200, 622602000, 638326800, 654656400, 670381200, 686106000, 701830800, 717555600, 733280400, 749005200, 764730000, 780454800, 796179600, 811904400, 828234000, 846378000 }
+     typeOffsets:intvector { 561, 0, 0, 0, 0, 3600, 0, 7200, 3600, 0, 3600, 3600 }
+     typeMap:bin { "0102010201020102010201020102010201020102010201020102010201020102010201020102010201020102010201020102050405040503020304050405040504050405040504050405040504050405040504050405040504050405040504050405040504" }
+     finalRule { "EU" }
+@@ -2387,9 +2382,9 @@ zoneinfo64:table(nofallback) {
+     finalYear:int { 2004 }
+   } //Z#497
+   /* Europe/Volgograd */ :table {
+-    trans:intvector { -1577761060, -1247540400, 354916800, 370724400, 386452800, 402260400, 417988800, 433796400, 449611200, 465343200, 481068000, 496792800, 512517600, 528242400, 543967200, 559692000, 575416800, 591145200, 606870000, 622594800, 638319600, 654649200, 670374000, 701820000, 717548400, 733273200, 748998000, 764722800, 780447600, 796172400, 811897200, 828226800, 846370800, 859676400, 877820400, 891126000, 909270000, 922575600, 941324400, 954025200, 972774000, 985474800, 1004223600, 1017529200, 1035673200, 1048978800, 1067122800, 1080428400, 1099177200, 1111878000, 1130626800, 1143327600, 1162076400, 1174777200, 1193526000, 1206831600, 1224975600, 1238281200, 1256425200, 1269730800, 1288479600, 1301180400, 1414274400, 1540681200 }
++    trans:intvector { -1577761060, -1247540400, 354916800, 370724400, 386452800, 402260400, 417988800, 433796400, 449611200, 465343200, 481068000, 496792800, 512517600, 528242400, 543967200, 559692000, 575416800, 591145200, 606870000, 622594800, 638319600, 654649200, 670374000, 701820000, 717548400, 733273200, 748998000, 764722800, 780447600, 796172400, 811897200, 828226800, 846370800, 859676400, 877820400, 891126000, 909270000, 922575600, 941324400, 954025200, 972774000, 985474800, 1004223600, 1017529200, 1035673200, 1048978800, 1067122800, 1080428400, 1099177200, 1111878000, 1130626800, 1143327600, 1162076400, 1174777200, 1193526000, 1206831600, 1224975600, 1238281200, 1256425200, 1269730800, 1288479600, 1301180400, 1414274400, 1540681200, 1609020000 }
+     typeOffsets:intvector { 10660, 0, 10800, 0, 10800, 3600, 14400, 0, 14400, 3600 }
+-    typeMap:bin { "01030403040304030403040304030403020102010201030201020102010201020102010201020102010201020102010201020102010201020102010201030103" }
++    typeMap:bin { "0103040304030403040304030403040302010201020103020102010201020102010201020102010201020102010201020102010201020102010201020103010301" }
+   } //Z#498
+   /* Europe/Warsaw */ :table {
+     trans:intvector { -1717032240, -1693706400, -1680483600, -1663455600, -1650150000, -1632006000, -1618700400, -1600473600, -1587168000, -1501725600, -931734000, -857257200, -844556400, -828226800, -812502000, -796608000, -778726800, -762660000, -748486800, -733273200, -715215600, -701910000, -684975600, -670460400, -654130800, -639010800, -397094400, -386812800, -371088000, -355363200, -334195200, -323308800, -307584000, -291859200, -271296000, -260409600, -239846400, -228960000, -208396800, -197510400, -176342400, -166060800, 228873600, 243993600, 260323200, 276048000, 291772800, 307497600, 323827200, 338947200, 354672000, 370396800, 386121600, 401846400, 417571200, 433296000, 449020800, 465350400, 481075200, 496800000, 512524800, 528249600, 543974400, 559699200, 575427600, 591152400, 606877200, 622602000, 638326800, 654656400, 670381200, 686106000, 701830800, 717555600, 733280400, 749005200, 764730000, 780454800, 796179600, 811904400, 828234000, 846378000 }
+@@ -2460,7 +2455,7 @@ zoneinfo64:table(nofallback) {
+     typeMap:bin { "01" }
+   } //Z#521
+   /* Indian/Mahe */ :table {
+-    trans:intvector { -2006653308 }
++    trans:intvector { -1988163708 }
+     typeOffsets:intvector { 13308, 0, 14400, 0 }
+     typeMap:bin { "01" }
+   } //Z#522
+@@ -2581,9 +2576,9 @@ zoneinfo64:table(nofallback) {
+     links:intvector { 395, 557 }
+   } //Z#557
+   /* Pacific/Efate */ :table {
+-    trans:intvector { -1829387596, 433256400, 448977600, 467298000, 480427200, 496760400, 511876800, 528210000, 543931200, 559659600, 575380800, 591109200, 606830400, 622558800, 638280000, 654008400, 669729600, 686062800, 696340800, 719931600, 727790400 }
++    trans:intvector { -1829387596, 125409600, 133876800, 433256400, 448977600, 464706000, 480427200, 496760400, 511876800, 528210000, 543931200, 559659600, 575380800, 591109200, 606830400, 622558800, 638280000, 654008400, 669729600, 686062800, 696340800, 719931600, 727790400 }
+     typeOffsets:intvector { 40396, 0, 39600, 0, 39600, 3600 }
+-    typeMap:bin { "010201020102010201020102010201020102010201" }
++    typeMap:bin { "0102010201020102010201020102010201020102010201" }
+   } //Z#558
+   /* Pacific/Enderbury */ :table {
+     transPre32:intvector { -1, 2117555556 }
+@@ -2598,12 +2593,12 @@ zoneinfo64:table(nofallback) {
+     typeMap:bin { "0102" }
+   } //Z#560
+   /* Pacific/Fiji */ :table {
+-    trans:intvector { -1709985344, 909842400, 920124000, 941896800, 951573600, 1259416800, 1269698400, 1287842400, 1299333600, 1319292000, 1327154400, 1350741600, 1358604000, 1382796000, 1390050000, 1414850400, 1421503200, 1446300000, 1452952800, 1478354400, 1484402400, 1509804000, 1515852000, 1541253600, 1547301600, 1573308000 }
++    trans:intvector { -1709985344, 909842400, 920124000, 941896800, 951573600, 1259416800, 1269698400, 1287842400, 1299333600, 1319292000, 1327154400, 1350741600, 1358604000, 1382796000, 1390050000, 1414850400, 1421503200, 1446300000, 1452952800, 1478354400, 1484402400, 1509804000, 1515852000, 1541253600, 1547301600, 1573308000, 1578751200, 1608386400, 1610805600, 1636812000 }
+     typeOffsets:intvector { 42944, 0, 43200, 0, 43200, 3600 }
+-    typeMap:bin { "0102010201020102010201020102010201020102010201020102" }
++    typeMap:bin { "010201020102010201020102010201020102010201020102010201020102" }
+     finalRule { "Fiji" }
+     finalRaw:int { 43200 }
+-    finalYear:int { 2020 }
++    finalYear:int { 2022 }
+   } //Z#561
+   /* Pacific/Funafuti */ :table {
+     transPre32:intvector { -1, 2117471484 }
+@@ -3124,7 +3119,7 @@ zoneinfo64:table(nofallback) {
+     8, -30, -1, 7200, 1, 3, 1, -1, 7200, 1, 3600
+   } //_#19
+   Palestine:intvector {
+-    2, -31, -6, 0, 0, 9, -31, -7, 3600, 0, 3600
++    2, 24, -7, 0, 0, 9, 24, -7, 3600, 0, 3600
+   } //_#20
+   Para:intvector {
+     9, 1, -1, 0, 0, 2, 22, -1, 0, 0, 3600
+diff --git a/source/i18n/smpdtfmt.cpp b/source/i18n/smpdtfmt.cpp
+index d704642b0536a4df54080a5a0a624febca459bfd..3fee8b90f87fdc2344b315ed92943f8bdee9b223 100644
+--- a/source/i18n/smpdtfmt.cpp
++++ b/source/i18n/smpdtfmt.cpp
+@@ -230,6 +230,13 @@ static const int32_t gFieldRangeBias[] = {
+ static const int32_t HEBREW_CAL_CUR_MILLENIUM_START_YEAR = 5000;
+ static const int32_t HEBREW_CAL_CUR_MILLENIUM_END_YEAR = 6000;
+ 
++/**
++ * Maximum range for detecting daylight offset of a time zone when parsed time zone
++ * string indicates it's daylight saving time, but the detected time zone does not
++ * observe daylight saving time at the parsed date.
++ */
++static const double MAX_DAYLIGHT_DETECTION_RANGE = 30*365*24*60*60*1000.0;
++
+ static UMutex LOCK;
+ 
+ UOBJECT_DEFINE_RTTI_IMPLEMENTATION(SimpleDateFormat)
+@@ -2524,51 +2531,47 @@ SimpleDateFormat::parse(const UnicodeString& text, Calendar& cal, ParsePosition&
+             } else { // tztype == TZTYPE_DST
+                 if (dst == 0) {
+                     if (btz != NULL) {
+-                        UDate time = localMillis + raw;
+-                        // We use the nearest daylight saving time rule.
+-                        TimeZoneTransition beforeTrs, afterTrs;
+-                        UDate beforeT = time, afterT = time;
+-                        int32_t beforeSav = 0, afterSav = 0;
+-                        UBool beforeTrsAvail, afterTrsAvail;
+-
+-                        // Search for DST rule before or on the time
+-                        while (TRUE) {
+-                            beforeTrsAvail = btz->getPreviousTransition(beforeT, TRUE, beforeTrs);
+-                            if (!beforeTrsAvail) {
++                        // This implementation resolves daylight saving time offset
++                        // closest rule after the given time.
++                        UDate baseTime = localMillis + raw;
++                        UDate time = baseTime;
++                        UDate limit = baseTime + MAX_DAYLIGHT_DETECTION_RANGE;
++                        TimeZoneTransition trs;
++                        UBool trsAvail;
++
++                        // Search for DST rule after the given time
++                        while (time < limit) {
++                            trsAvail = btz->getNextTransition(time, FALSE, trs);
++                            if (!trsAvail) {
+                                 break;
+                             }
+-                            beforeT = beforeTrs.getTime() - 1;
+-                            beforeSav = beforeTrs.getFrom()->getDSTSavings();
+-                            if (beforeSav != 0) {
++                            resolvedSavings = trs.getTo()->getDSTSavings();
++                            if (resolvedSavings != 0) {
+                                 break;
+                             }
++                            time = trs.getTime();
+                         }
+ 
+-                        // Search for DST rule after the time
+-                        while (TRUE) {
+-                            afterTrsAvail = btz->getNextTransition(afterT, FALSE, afterTrs);
+-                            if (!afterTrsAvail) {
+-                                break;
++                        if (resolvedSavings == 0) {
++                            // If no DST rule after the given time was found, search for
++                            // DST rule before.
++                            time = baseTime;
++                            limit = baseTime - MAX_DAYLIGHT_DETECTION_RANGE;
++                            while (time > limit) {
++                                trsAvail = btz->getPreviousTransition(time, TRUE, trs);
++                                if (!trsAvail) {
++                                    break;
++                                }
++                                resolvedSavings = trs.getFrom()->getDSTSavings();
++                                if (resolvedSavings != 0) {
++                                    break;
++                                }
++                                time = trs.getTime() - 1;
+                             }
+-                            afterT = afterTrs.getTime();
+-                            afterSav = afterTrs.getTo()->getDSTSavings();
+-                            if (afterSav != 0) {
+-                                break;
+-                            }
+-                        }
+ 
+-                        if (beforeTrsAvail && afterTrsAvail) {
+-                            if (time - beforeT > afterT - time) {
+-                                resolvedSavings = afterSav;
+-                            } else {
+-                                resolvedSavings = beforeSav;
++                            if (resolvedSavings == 0) {
++                                resolvedSavings = btz->getDSTSavings();
+                             }
+-                        } else if (beforeTrsAvail && beforeSav != 0) {
+-                            resolvedSavings = beforeSav;
+-                        } else if (afterTrsAvail && afterSav != 0) {
+-                            resolvedSavings = afterSav;
+-                        } else {
+-                            resolvedSavings = btz->getDSTSavings();
+                         }
+                     } else {
+                         resolvedSavings = tz.getDSTSavings();
+diff --git a/source/tools/tzcode/Makefile.in b/source/tools/tzcode/Makefile.in
+index 80139f799300f0f03d576f60af3adec11b51afea..4ba969f42effa76363af76bf6860ca4caca0baab 100644
+--- a/source/tools/tzcode/Makefile.in
++++ b/source/tools/tzcode/Makefile.in
+@@ -19,14 +19,11 @@ TZCODE = $(firstword $(wildcard ./tzcode*.tar.gz) $(wildcard $(srcdir)/tzcode*.t
+ endif
+ 
+ 
+-PRIMARY_YDATA=	africa antarctica asia australasia \
+-		europe northamerica southamerica
+-YDATA=		$(PRIMARY_YDATA) pacificnew etcetera factory backward
+-NDATA=		systemv
+-SDATA=		solar87 solar88 solar89
+-#TDATA=		$(YDATA) $(NDATA) $(SDATA)
+-TDATA=		$(YDATA) $(NDATA)
+-YEARISTYPE=     ./yearistype
++PRIMARY_DATA = africa antarctica asia australasia europe northamerica southamerica
++SUPPLEMENTAL_DATA = etcetera factory backward
++#DEPRECATED_DATA = pacificnew systemv solar87 solar88 solar89
++#TDATA =	$(PRIMARY_DATA) $(SUPPLEMENTAL_DATA) $(DEPRECATED_DATA)
++TDATA =	$(PRIMARY_DATA) $(SUPPLEMENTAL_DATA)
+ 
+ TZDIR=zoneinfo
+ 
+@@ -34,7 +31,7 @@ CFLAGS+=-D_POSIX_C_SOURCE
+ CPPFLAGS+= -DTZDIR=\"$(TZDIR)\" 
+ 
+ # more data
+-XDATA=zone.tab yearistype.sh leapseconds iso3166.tab
++XDATA=zone.tab leapseconds iso3166.tab
+ ICUDATA=ZoneMetaData.java icu_zone.txt tz2icu zoneinfo64.txt zoneinfo.txt
+ 
+ VANGUARD_DIR= ./vanguard
+@@ -102,8 +99,8 @@ tzorig:	$(TZCODE) $(TZDATA)
+ 	cat $(TZORIG)/factory.orig $(srcdir)/icuzones > $(TZORIG)/factory
+ 	-mv $(TZORIG)/zishrink.awk $(TZORIG)/zishrink.awk.orig
+ 	sed -e '/if (line ~ \/^R SystemV \/) return/s/^/#/' $(TZORIG)/zishrink.awk.orig > $(TZORIG)/zishrink.awk
+-	-mv $(TZORIG)/Makefile $(TZORIG)/Makefile.orig
+-	sed -e "s/^BACKWARD=.*/BACKWARD= backward pacificnew/" $(TZORIG)/Makefile.orig > $(TZORIG)/Makefile
++#	-mv $(TZORIG)/Makefile $(TZORIG)/Makefile.orig
++#	sed -e "s/^BACKWARD=.*/BACKWARD= backward pacificnew/" $(TZORIG)/Makefile.orig > $(TZORIG)/Makefile
+ 	$(MAKE) -C $@ $(TZORIG_OPTS) zdump zones
+ 
+ $(ZDUMPOUT): tzorig
+@@ -129,7 +126,7 @@ $(ICUZDUMPOUT): $(ICUZDUMPEXEC)
+ #
+ 
+ 
+-$(ZICTARG):		$(OBJECTS) $(TDATA) yearistype $(srcdir)/tz2icu.h
++$(ZICTARG):		$(OBJECTS) $(TDATA) $(srcdir)/tz2icu.h
+ 		$(CC) $(CFLAGS) $(TZORIG_EXTRA_CFLAGS) $(LFLAGS) -I$(srcdir) $(OBJECTS) $(LDLIBS) -o $@
+ 
+ $(TZ2ICUTARG):	$(srcdir)/tz2icu.cpp $(srcdir)/tz2icu.h
+@@ -150,12 +147,8 @@ tdatamarker: $(TZDATA)
+ 	done
+ 	touch $@
+ 
+-yearistype:	yearistype.sh
+-		cp yearistype.sh yearistype
+-		chmod +x yearistype
+-
+ posix_only:	$(ZICEXEC) $(TDATA) $(srcdir)/icuzones
+-		$(ZICEXEC) -y $(YEARISTYPE) -d $(TZDIR) -L /dev/null $(TDATA) $(srcdir)/icuzones
++		$(ZICEXEC) -d $(TZDIR) -L /dev/null $(TDATA) $(srcdir)/icuzones
+ 
+ 
+ icu_data:	$(TZ2ICUEXEC) posix_only
+@@ -163,7 +156,7 @@ icu_data:	$(TZ2ICUEXEC) posix_only
+ 		$(TZ2ICUEXEC) $(TZDIR) zone.tab `echo $(TZDATA) | sed -e "s/.*\/tzdata//;s/\.tar\.gz$$//"` --old
+ 
+ clean:
+-		-rm -f core *.o *.out zdump${EXEEXT} $(ZICTARG) yearistype date $(TZ2ICUTARG)
++		-rm -f core *.o *.out zdump${EXEEXT} $(ZICTARG) date $(TZ2ICUTARG)
+ 		@echo ICU specific cleanup:
+ 		-rm -f $(ICUDATA)
+ 		-rm -rf $(TZDIR)
+diff --git a/source/tools/tzcode/icuzdump.cpp b/source/tools/tzcode/icuzdump.cpp
+index 71551ed8d9aacec2c42d56ee8ecfe16cae219c2d..783f63d22b31317666715fc8b1d3c7203e811ed5 100644
+--- a/source/tools/tzcode/icuzdump.cpp
++++ b/source/tools/tzcode/icuzdump.cpp
+@@ -137,12 +137,12 @@ public:
+ 
+         getCutOverTimes(cutlo, cuthi);
+         t = cutlo;
+-        timezone->getOffset(t, FALSE, rawOffset, dstOffset, status);
++        timezone->getOffset(t, false, rawOffset, dstOffset, status);
+         while (t < cuthi) {
+             int32_t newRawOffset, newDstOffset;
+             UDate newt = t + SEARCH_INCREMENT;
+ 
+-            timezone->getOffset(newt, FALSE, newRawOffset, newDstOffset, status);
++            timezone->getOffset(newt, false, newRawOffset, newDstOffset, status);
+ 
+             UBool bSameOffset = (rawOffset + dstOffset) == (newRawOffset + newDstOffset);
+             UBool bSameDst = ((dstOffset != 0) && (newDstOffset != 0)) || ((dstOffset == 0) && (newDstOffset == 0));
+@@ -158,7 +158,7 @@ public:
+                     }
+                     UDate medt = lot + ((diff / 2) / tick) * tick;
+                     int32_t medRawOffset, medDstOffset;
+-                    timezone->getOffset(medt, FALSE, medRawOffset, medDstOffset, status);
++                    timezone->getOffset(medt, false, medRawOffset, medDstOffset, status);
+ 
+                     bSameOffset = (rawOffset + dstOffset) == (medRawOffset + medDstOffset);
+                     bSameDst = ((dstOffset != 0) && (medDstOffset != 0)) || ((dstOffset == 0) && (medDstOffset == 0));
+@@ -171,10 +171,10 @@ public:
+                 }
+                 // write out the boundary
+                 str.remove();
+-                formatter->format(lot, rawOffset + dstOffset, (dstOffset == 0 ? FALSE : TRUE), str);
++                formatter->format(lot, rawOffset + dstOffset, (dstOffset == 0 ? false : true), str);
+                 out << str << " > ";
+                 str.remove();
+-                formatter->format(hit, newRawOffset + newDstOffset, (newDstOffset == 0 ? FALSE : TRUE), str);
++                formatter->format(hit, newRawOffset + newDstOffset, (newDstOffset == 0 ? false : true), str);
+                 out << str;
+                 if (linesep != NULL) {
+                     out << linesep;
+@@ -211,7 +211,7 @@ private:
+ 
+ class ZoneIterator {
+ public:
+-    ZoneIterator(UBool bAll = FALSE) {
++    ZoneIterator(UBool bAll = false) {
+         if (bAll) {
+             zenum = TimeZone::createEnumeration();
+         }
+@@ -288,7 +288,7 @@ extern int
+ main(int argc, char *argv[]) {
+     int32_t low = 1902;
+     int32_t high = 2038;
+-    UBool bAll = FALSE;
++    UBool bAll = false;
+     const char *dir = NULL;
+     const char *linesep = NULL;
+ 
+@@ -355,7 +355,7 @@ main(int argc, char *argv[]) {
+ 
+     ZoneIterator* zit;
+     if (bAll) {
+-        zit = new ZoneIterator(TRUE);
++        zit = new ZoneIterator(true);
+     } else {
+         if (argc <= 1) {
+             zit = new ZoneIterator();
+@@ -402,7 +402,7 @@ main(int argc, char *argv[]) {
+ 
+     } else {
+         // stdout
+-        UBool bFirst = TRUE;
++        UBool bFirst = true;
+         for (;;) {
+             TimeZone* tz = zit->next();
+             if (tz == NULL) {
+@@ -411,7 +411,7 @@ main(int argc, char *argv[]) {
+             dumper.setTimeZone(tz);
+             tz->getID(id);
+             if (bFirst) {
+-                bFirst = FALSE;
++                bFirst = false;
+             } else {
+                 cout << endl;
+             }
+diff --git a/source/tools/tzcode/icuzones b/source/tools/tzcode/icuzones
+index 77cf71945b58ab50fa0530c8849405d51af20e96..52f5698cd7b4185edeb154cf1c5a89224be98182 100644
+--- a/source/tools/tzcode/icuzones
++++ b/source/tools/tzcode/icuzones
+@@ -17,7 +17,19 @@
+ Zone	Etc/Unknown	0	-	Unknown
+ 
+ # SystemV time zones.
+-# The Olson systemv file has these commented out.
++# IANA tzdb file 'systemv' file has these SystemV/* zones commented out up to 2020a.
++# 'systemv' file was removed in 2020b. We keep them in this supplemental zone data
++# file for compatibility purpose.
++
++# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
++Rule	SystemV	min	1973	-	Apr	lastSun	2:00	1:00	D
++Rule	SystemV	min	1973	-	Oct	lastSun	2:00	0	S
++Rule	SystemV	1974	only	-	Jan	6	2:00	1:00	D
++Rule	SystemV	1974	only	-	Nov	lastSun	2:00	0	S
++Rule	SystemV	1975	only	-	Feb	23	2:00	1:00	D
++Rule	SystemV	1975	only	-	Oct	lastSun	2:00	0	S
++Rule	SystemV	1976	max	-	Apr	lastSun	2:00	1:00	D
++Rule	SystemV	1976	max	-	Oct	lastSun	2:00	0	S
+ 
+ # Zone	NAME		GMTOFF	RULES/SAVE	FORMAT	[UNTIL]
+ Zone	SystemV/AST4ADT	-4:00	SystemV		A%sT
+@@ -34,6 +46,11 @@ Zone	SystemV/PST8	-8:00	-		PST
+ Zone	SystemV/YST9	-9:00	-		YST
+ Zone	SystemV/HST10	-10:00	-		HST
+ 
++# pacificnew
++# IANA tzdb file 'pacificnew' used to contain a Link for US/Pacific-New.
++# 'pacificnew' file was removed in 2020b. We keep the Link here for compatibility.
++Link America/Los_Angeles US/Pacific-New
++
+ 
+ # The list below is for supporting legacy ICU zone aliases.
+ # These definitions were originally defined in tz.alias.
+diff --git a/source/tools/tzcode/tz2icu.cpp b/source/tools/tzcode/tz2icu.cpp
+index b946ffb2c9db9f236b69c7beaf1ebad9143ea4a1..cf53c83195afc32c7f7acd15a909fe3acb1ed704 100644
+--- a/source/tools/tzcode/tz2icu.cpp
++++ b/source/tools/tzcode/tz2icu.cpp
+@@ -51,7 +51,7 @@
+ 
+ using namespace std;
+ 
+-bool ICU44PLUS = TRUE;
++bool ICU44PLUS = true;
+ string TZ_RESOURCE_NAME = ICU_TZ_RESOURCE;
+ 
+ //--------------------------------------------------------------------
+@@ -1431,19 +1431,19 @@ void FinalRule::print(ostream& os) const {
+ 
+ int main(int argc, char *argv[]) {
+     string rootpath, zonetab, version;
+-    bool validArgs = FALSE;
++    bool validArgs = false;
+ 
+     if (argc == 4 || argc == 5) {
+-        validArgs = TRUE;
++        validArgs = true;
+         rootpath = argv[1];
+         zonetab = argv[2];
+         version = argv[3];
+         if (argc == 5) {
+             if (strcmp(argv[4], "--old") == 0) {
+-                ICU44PLUS = FALSE;
++                ICU44PLUS = false;
+                 TZ_RESOURCE_NAME = ICU_TZ_RESOURCE_OLD;
+             } else {
+-                validArgs = FALSE;
++                validArgs = false;
+             }
+         }
+     }
+@@ -1781,7 +1781,6 @@ int main(int argc, char *argv[]) {
+     time_t sec;
+     time(&sec);
+     struct tm* now = localtime(&sec);
+-    int32_t thisYear = now->tm_year + 1900;
+ 
+     string filename = TZ_RESOURCE_NAME + ".txt";
+     // Write out a resource-bundle source file containing data for
diff --git a/patches/node/.patches b/patches/node/.patches
index dc3fd20253194..d5d9dfe8b2afe 100644
--- a/patches/node/.patches
+++ b/patches/node/.patches
@@ -47,3 +47,7 @@ update_tests_after_increasing_typed_array_size.patch
 darwin_work_around_clock_jumping_back_in_time.patch
 lib_use_non-symbols_in_isurlinstance_check.patch
 fix_enable_tls_renegotiation.patch
+crypto_update_certdata_to_nss_3_56.patch
+n-api_src_provide_asynchronous_cleanup_hooks.patch
+chore_expose_v8_initialization_isolate_callbacks.patch
+fix_add_safeforterminationscopes_for_sigint_interruptions.patch
diff --git a/patches/node/chore_expose_v8_initialization_isolate_callbacks.patch b/patches/node/chore_expose_v8_initialization_isolate_callbacks.patch
new file mode 100644
index 0000000000000..d0b22e9455087
--- /dev/null
+++ b/patches/node/chore_expose_v8_initialization_isolate_callbacks.patch
@@ -0,0 +1,89 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Shelley Vohr <shelley.vohr@gmail.com>
+Date: Mon, 5 Oct 2020 16:05:45 -0700
+Subject: chore: expose v8 initialization isolate callbacks
+
+Exposes v8 initializer callbacks to Electron so that we can call them
+directly. We expand upon and adapt their behavior, so allows us to
+ensure that we stay in sync with Node.js default behavior.
+
+This will be upstreamed.
+
+diff --git a/src/api/environment.cc b/src/api/environment.cc
+index 7b370579d365204b2bd40a25e740bbc83726c376..be58db8d2bebd1e1e5a0e6eb35c09b459d5d56e6 100644
+--- a/src/api/environment.cc
++++ b/src/api/environment.cc
+@@ -25,14 +25,16 @@ using v8::Private;
+ using v8::String;
+ using v8::Value;
+ 
+-static bool AllowWasmCodeGenerationCallback(Local<Context> context,
++// static
++bool Environment::AllowWasmCodeGenerationCallback(Local<Context> context,
+                                             Local<String>) {
+   Local<Value> wasm_code_gen =
+       context->GetEmbedderData(ContextEmbedderIndex::kAllowWasmCodeGeneration);
+   return wasm_code_gen->IsUndefined() || wasm_code_gen->IsTrue();
+ }
+ 
+-static bool ShouldAbortOnUncaughtException(Isolate* isolate) {
++// static
++bool Environment::ShouldAbortOnUncaughtException(Isolate* isolate) {
+   DebugSealHandleScope scope(isolate);
+   Environment* env = Environment::GetCurrent(isolate);
+   return env != nullptr &&
+@@ -41,7 +43,8 @@ static bool ShouldAbortOnUncaughtException(Isolate* isolate) {
+          !env->inside_should_not_abort_on_uncaught_scope();
+ }
+ 
+-static MaybeLocal<Value> PrepareStackTraceCallback(Local<Context> context,
++// static
++MaybeLocal<Value> Environment::PrepareStackTraceCallback(Local<Context> context,
+                                       Local<Value> exception,
+                                       Local<Array> trace) {
+   Environment* env = Environment::GetCurrent(context);
+@@ -195,7 +198,7 @@ void SetIsolateErrorHandlers(v8::Isolate* isolate, const IsolateSettings& s) {
+ 
+   auto* abort_callback = s.should_abort_on_uncaught_exception_callback ?
+       s.should_abort_on_uncaught_exception_callback :
+-      ShouldAbortOnUncaughtException;
++      Environment::ShouldAbortOnUncaughtException;
+   isolate->SetAbortOnUncaughtExceptionCallback(abort_callback);
+ 
+   auto* fatal_error_cb = s.fatal_error_callback ?
+@@ -203,7 +206,7 @@ void SetIsolateErrorHandlers(v8::Isolate* isolate, const IsolateSettings& s) {
+   isolate->SetFatalErrorHandler(fatal_error_cb);
+ 
+   auto* prepare_stack_trace_cb = s.prepare_stack_trace_callback ?
+-      s.prepare_stack_trace_callback : PrepareStackTraceCallback;
++      s.prepare_stack_trace_callback : Environment::PrepareStackTraceCallback;
+   isolate->SetPrepareStackTraceCallback(prepare_stack_trace_cb);
+ }
+ 
+@@ -211,7 +214,7 @@ void SetIsolateMiscHandlers(v8::Isolate* isolate, const IsolateSettings& s) {
+   isolate->SetMicrotasksPolicy(s.policy);
+ 
+   auto* allow_wasm_codegen_cb = s.allow_wasm_code_generation_callback ?
+-    s.allow_wasm_code_generation_callback : AllowWasmCodeGenerationCallback;
++    s.allow_wasm_code_generation_callback : Environment::AllowWasmCodeGenerationCallback;
+   isolate->SetAllowWasmCodeGenerationCallback(allow_wasm_codegen_cb);
+ 
+   auto* promise_reject_cb = s.promise_reject_callback ?
+diff --git a/src/env.h b/src/env.h
+index e269c47ae3814b42fdd2792360c1acb1995e98d2..e251eb1bb478b61b6b5a679f311c00d4310ff5ce 100644
+--- a/src/env.h
++++ b/src/env.h
+@@ -908,6 +908,13 @@ class Environment : public MemoryRetainer {
+   void Exit(int code);
+   void ExitEnv();
+ 
++  static bool AllowWasmCodeGenerationCallback(v8::Local<v8::Context> context,
++                                       v8::Local<v8::String>);
++  static bool ShouldAbortOnUncaughtException(v8::Isolate* isolate);
++  static v8::MaybeLocal<v8::Value> PrepareStackTraceCallback(v8::Local<v8::Context> context,
++                                      v8::Local<v8::Value> exception,
++                                      v8::Local<v8::Array> trace);
++
+   // Register clean-up cb to be called on environment destruction.
+   inline void RegisterHandleCleanup(uv_handle_t* handle,
+                                     HandleCleanupCb cb,
diff --git a/patches/node/crypto_update_certdata_to_nss_3_56.patch b/patches/node/crypto_update_certdata_to_nss_3_56.patch
new file mode 100644
index 0000000000000..cbe055d24ba2e
--- /dev/null
+++ b/patches/node/crypto_update_certdata_to_nss_3_56.patch
@@ -0,0 +1,2407 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jeremy Rose <nornagon@nornagon.net>
+Date: Thu, 3 Sep 2020 13:25:06 -0700
+Subject: crypto: update certdata to NSS 3.56
+
+tools: update certdata.txt
+
+This is the certdata.txt[0] from NSS 3.56, released on 2020-08-21.
+
+[0] https://hg.mozilla.org/projects/nss/raw-file/NSS_3_56_RTM/lib/ckfw/builtins/certdata.txt
+
+crypto: update root certificates
+
+Update the list of root certificates in src/node_root_certs.h with
+tools/mk-ca-bundle.pl.
+
+Certificates added:
+- Microsoft ECC Root Certificate Authority 2017
+- Microsoft RSA Root Certificate Authority 2017
+- e-Szigno Root CA 2017
+- certSIGN Root CA G2
+
+Certificates removed:
+- Verisign Class 3 Public Primary Certification Authority - G3
+- AddTrust External Root
+- Staat der Nederlanden Root CA - G2
+- LuxTrust Global Root 2
+
+diff --git a/src/node_root_certs.h b/src/node_root_certs.h
+index f8e84e7d231e33736a798c2fd344566df2d2c6a6..47beb730f4b853f1bf248a7fd1b1cd7d726bdf7e 100644
+--- a/src/node_root_certs.h
++++ b/src/node_root_certs.h
+@@ -43,30 +43,6 @@
+ "jmmx6BEP3ojY+x1J96relc8geMJgEtslQIxq/H5COEBkEveegeGTLg==\n"
+ "-----END CERTIFICATE-----",
+ 
+-/* Verisign Class 3 Public Primary Certification Authority - G3 */
+-"-----BEGIN CERTIFICATE-----\n"
+-"MIIEGjCCAwICEQCbfgZJoz5iudXukEhxKe9XMA0GCSqGSIb3DQEBBQUAMIHKMQswCQYDVQQG\n"
+-"EwJVUzEXMBUGA1UEChMOVmVyaVNpZ24sIEluYy4xHzAdBgNVBAsTFlZlcmlTaWduIFRydXN0\n"
+-"IE5ldHdvcmsxOjA4BgNVBAsTMShjKSAxOTk5IFZlcmlTaWduLCBJbmMuIC0gRm9yIGF1dGhv\n"
+-"cml6ZWQgdXNlIG9ubHkxRTBDBgNVBAMTPFZlcmlTaWduIENsYXNzIDMgUHVibGljIFByaW1h\n"
+-"cnkgQ2VydGlmaWNhdGlvbiBBdXRob3JpdHkgLSBHMzAeFw05OTEwMDEwMDAwMDBaFw0zNjA3\n"
+-"MTYyMzU5NTlaMIHKMQswCQYDVQQGEwJVUzEXMBUGA1UEChMOVmVyaVNpZ24sIEluYy4xHzAd\n"
+-"BgNVBAsTFlZlcmlTaWduIFRydXN0IE5ldHdvcmsxOjA4BgNVBAsTMShjKSAxOTk5IFZlcmlT\n"
+-"aWduLCBJbmMuIC0gRm9yIGF1dGhvcml6ZWQgdXNlIG9ubHkxRTBDBgNVBAMTPFZlcmlTaWdu\n"
+-"IENsYXNzIDMgUHVibGljIFByaW1hcnkgQ2VydGlmaWNhdGlvbiBBdXRob3JpdHkgLSBHMzCC\n"
+-"ASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMu6nFL8eB8aHm8bN3O9+MlrlBIwT/A2\n"
+-"R/XQkQr1F8ilYcEWQE37imGQ5XYgwREGfassbqb1EUGO+i2tKmFZpGcmTNDovFJbcCAEWNF6\n"
+-"yaRpvIMXZK0Fi7zQWM6NjPXr8EJJC52XJ2cybuGukxUccLwgTS8Y3pKI6GyFVxEa6X7jJhFU\n"
+-"okWWVYPKMIno3Nij7SqAP395ZVc+FSBmCC+Vk7+qRy+oRpfwEuL+wgorUeZ25rdGt+INpsyo\n"
+-"w0xZVYnm6FNcHOqd8GIWC6fJXwzw3sJ2zq/3avL6QaaiMxTJ5Xpj055iN9WFZZ4O5lMkdBte\n"
+-"HRJTW8cs54NJOxWuimi5V5cCAwEAATANBgkqhkiG9w0BAQUFAAOCAQEAERSWwauSCPc/L8my\n"
+-"/uRan2Te2yFPhpk0djZX3dAVL8WtfxUfN2JzPtTnX84XA9s1+ivbrmAJXx5fj267Cz3qWhMe\n"
+-"DGBvtcC1IyIuBwvLqXTLR7sdwdela8wv0kL9Sd2nic9TutoAWii/gt/4uhMdUIaC/Y4wjylG\n"
+-"sB49Ndo4YhYYSq3mtlFs3q9i6wHQHiT+eo8SGhJouPtmmRQURVyu565pF4ErWjfJXir0xuKh\n"
+-"XFSbplQAz/DxwceYMBo7Nhbbo27q/a2ywtrvAkcTisDxszGtTxzhT5yvDwyd93gN2PQ1VoDa\n"
+-"t20Xj50egWTh/sVFuq1ruQp6Tk9LhO5L8X3dEQ==\n"
+-"-----END CERTIFICATE-----",
+-
+ /* Entrust.net Premium 2048 Secure Server CA */
+ "-----BEGIN CERTIFICATE-----\n"
+ "MIIEKjCCAxKgAwIBAgIEOGPe+DANBgkqhkiG9w0BAQUFADCBtDEUMBIGA1UEChMLRW50cnVz\n"
+@@ -112,31 +88,6 @@
+ "R9I4LtD+gdwyah617jzV/OeBHRnDJELqYzmp\n"
+ "-----END CERTIFICATE-----",
+ 
+-/* AddTrust External Root */
+-"-----BEGIN CERTIFICATE-----\n"
+-"MIIENjCCAx6gAwIBAgIBATANBgkqhkiG9w0BAQUFADBvMQswCQYDVQQGEwJTRTEUMBIGA1UE\n"
+-"ChMLQWRkVHJ1c3QgQUIxJjAkBgNVBAsTHUFkZFRydXN0IEV4dGVybmFsIFRUUCBOZXR3b3Jr\n"
+-"MSIwIAYDVQQDExlBZGRUcnVzdCBFeHRlcm5hbCBDQSBSb290MB4XDTAwMDUzMDEwNDgzOFoX\n"
+-"DTIwMDUzMDEwNDgzOFowbzELMAkGA1UEBhMCU0UxFDASBgNVBAoTC0FkZFRydXN0IEFCMSYw\n"
+-"JAYDVQQLEx1BZGRUcnVzdCBFeHRlcm5hbCBUVFAgTmV0d29yazEiMCAGA1UEAxMZQWRkVHJ1\n"
+-"c3QgRXh0ZXJuYWwgQ0EgUm9vdDCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBALf3\n"
+-"GjPm8gAELTngTlvtH7xsD821+iO2zt6bETOXpClMfZOfvUq8k+0DGuOPz+VtUFrWlymUWoCw\n"
+-"SXrbLpX9uMq/NzgtHj6RQa1wVsfwTz/oMp50ysiQVOnGXw94nZpAPA6sYapeFI+eh6FqUNzX\n"
+-"mk6vBbOmcZSccbNQYArHE504B4YCqOmoaSYYkKtMsE8jqzpPhNjfzp/haW+710LXa0Tkx63u\n"
+-"bUFfclpxCDezeWWkWaCUN/cALw3CknLa0Dhy2xSoRcRdKn23tNbE7qzNE0S3ySvdQwAl+mG5\n"
+-"aWpYIxG3pzOPVnVZ9c0p10a3CitlttNCbxWyuHv77+ldU9U0WicCAwEAAaOB3DCB2TAdBgNV\n"
+-"HQ4EFgQUrb2YejS0Jvf6xCZU7wO94CTLVBowCwYDVR0PBAQDAgEGMA8GA1UdEwEB/wQFMAMB\n"
+-"Af8wgZkGA1UdIwSBkTCBjoAUrb2YejS0Jvf6xCZU7wO94CTLVBqhc6RxMG8xCzAJBgNVBAYT\n"
+-"AlNFMRQwEgYDVQQKEwtBZGRUcnVzdCBBQjEmMCQGA1UECxMdQWRkVHJ1c3QgRXh0ZXJuYWwg\n"
+-"VFRQIE5ldHdvcmsxIjAgBgNVBAMTGUFkZFRydXN0IEV4dGVybmFsIENBIFJvb3SCAQEwDQYJ\n"
+-"KoZIhvcNAQEFBQADggEBALCb4IUlwtYj4g+WBpKdQZic2YR5gdkeWxQHIzZlj7DYd7usQWxH\n"
+-"YINRsPkyPef89iYTx4AWpb9a/IfPeHmJIZriTAcKhjW88t5RxNKWt9x+Tu5w/Rw56wwCURQt\n"
+-"jr0W4MHfRnXnJK3s9EK0hZNwEGe6nQY1ShjTK3rMUUKhemPR5ruhxSvCNr4TDea9Y355e6cJ\n"
+-"DUCrat2PisP29owaQgVR1EX1n6diIWgVIEM8med8vSTYqZEXc4g/VhsxOBi0cQ+azcgOno4u\n"
+-"G+GMmIPLHzHxREzGBHNJdmAPx/i9F4BrLunMTA5amnkPIAou1Z5jJh5VkpTYghdae9C8x49O\n"
+-"hgQ=\n"
+-"-----END CERTIFICATE-----",
+-
+ /* Entrust Root Certification Authority */
+ "-----BEGIN CERTIFICATE-----\n"
+ "MIIEkTCCA3mgAwIBAgIERWtQVDANBgkqhkiG9w0BAQUFADCBsDELMAkGA1UEBhMCVVMxFjAU\n"
+@@ -1110,38 +1061,6 @@
+ "dZWAUWpLMKawYqGT8ZvYzsRjdT9ZR7E=\n"
+ "-----END CERTIFICATE-----",
+ 
+-/* Staat der Nederlanden Root CA - G2 */
+-"-----BEGIN CERTIFICATE-----\n"
+-"MIIFyjCCA7KgAwIBAgIEAJiWjDANBgkqhkiG9w0BAQsFADBaMQswCQYDVQQGEwJOTDEeMBwG\n"
+-"A1UECgwVU3RhYXQgZGVyIE5lZGVybGFuZGVuMSswKQYDVQQDDCJTdGFhdCBkZXIgTmVkZXJs\n"
+-"YW5kZW4gUm9vdCBDQSAtIEcyMB4XDTA4MDMyNjExMTgxN1oXDTIwMDMyNTExMDMxMFowWjEL\n"
+-"MAkGA1UEBhMCTkwxHjAcBgNVBAoMFVN0YWF0IGRlciBOZWRlcmxhbmRlbjErMCkGA1UEAwwi\n"
+-"U3RhYXQgZGVyIE5lZGVybGFuZGVuIFJvb3QgQ0EgLSBHMjCCAiIwDQYJKoZIhvcNAQEBBQAD\n"
+-"ggIPADCCAgoCggIBAMVZ5291qj5LnLW4rJ4L5PnZyqtdj7U5EILXr1HgO+EASGrP2uEGQxGZ\n"
+-"qhQlEq0i6ABtQ8SpuOUfiUtnvWFI7/3S4GCI5bkYYCjDdyutsDeqN95kWSpGV+RLufg3fNU2\n"
+-"54DBtvPUZ5uW6M7XxgpT0GtJlvOjCwV3SPcl5XCsMBQgJeN/dVrlSPhOewMHBPqCYYdu8DvE\n"
+-"pMfQ9XQ+pV0aCPKbJdL2rAQmPlU6Yiile7Iwr/g3wtG61jj99O9JMDeZJiFIhQGp5Rbn3JBV\n"
+-"3w/oOM2ZNyFPXfUib2rFEhZgF1XyZWampzCROME4HYYEhLoaJXhena/MUGDWE4dS7WMfbWV9\n"
+-"whUYdMrhfmQpjHLYFhN9C0lK8SgbIHRrxT3dsKpICT0ugpTNGmXZK4iambwYfp/ufWZ8Pr2U\n"
+-"uIHOzZgweMFvZ9C+X+Bo7d7iscksWXiSqt8rYGPy5V6548r6f1CGPqI0GAwJaCgRHOThuVw+\n"
+-"R7oyPxjMW4T182t0xHJ04eOLoEq9jWYv6q012iDTiIJh8BIitrzQ1aTsr1SIJSQ8p22xcik/\n"
+-"Plemf1WvbibG/ufMQFxRRIEKeN5KzlW/HdXZt1bv8Hb/C3m1r737qWmRRpdogBQ2HbN/uymY\n"
+-"NqUg+oJgYjOk7Na6B6duxc8UpufWkjTYgfX8HV2qXB72o007uPc5AgMBAAGjgZcwgZQwDwYD\n"
+-"VR0TAQH/BAUwAwEB/zBSBgNVHSAESzBJMEcGBFUdIAAwPzA9BggrBgEFBQcCARYxaHR0cDov\n"
+-"L3d3dy5wa2lvdmVyaGVpZC5ubC9wb2xpY2llcy9yb290LXBvbGljeS1HMjAOBgNVHQ8BAf8E\n"
+-"BAMCAQYwHQYDVR0OBBYEFJFoMocVHYnitfGsNig0jQt8YojrMA0GCSqGSIb3DQEBCwUAA4IC\n"
+-"AQCoQUpnKpKBglBu4dfYszk78wIVCVBR7y29JHuIhjv5tLySCZa59sCrI2AGeYwRTlHSeYAz\n"
+-"+51IvuxBQ4EffkdAHOV6CMqqi3WtFMTC6GY8ggen5ieCWxjmD27ZUD6KQhgpxrRW/FYQoAUX\n"
+-"vQwjf/ST7ZwaUb7dRUG/kSS0H4zpX897IZmflZ85OkYcbPnNe5yQzSipx6lVu6xiNGI1E0sU\n"
+-"OlWDuYaNkqbG9AclVMwWVxJKgnjIFNkXgiYtXSAfea7+1HAWFpWD2DU5/1JddRwWxRNVz0fM\n"
+-"dWVSSt7wsKfkCpYL+63C4iWEst3kvX5ZbJvw8NjnyvLplzh+ib7M+zkXYT9y2zqR2GUBGR2t\n"
+-"UKRXCnxLvJxxcypFURmFzI79R6d0lR2o0a9OF7FpJsKqeFdbxU2n5Z4FF5TKsl+gSRiNNOkm\n"
+-"bEgeqmiSBeGCc1qb3AdbCG19ndeNIdn8FCCqwkXfP+cAslHkwvgFuXkajDTznlvkN1trSt8s\n"
+-"V4pAWja63XVECDdCcAz+3F4hoKOKwJCcaNpQ5kUQR3i2TtJlycM33+FCY7BXN0Ute4qcvwXq\n"
+-"ZVUz9zkQxSgqIXobisQk+T8VyJoVIPVVYpbtbZNQvOSqeK3Zywplh6ZmwcSBo3c6WB4L7oOL\n"
+-"nR7SUqTMHW+wmG2UMbX4cQrcufx9MmDm66+KAQ==\n"
+-"-----END CERTIFICATE-----",
+-
+ /* Hongkong Post Root CA 1 */
+ "-----BEGIN CERTIFICATE-----\n"
+ "MIIDMDCCAhigAwIBAgICA+gwDQYJKoZIhvcNAQEFBQAwRzELMAkGA1UEBhMCSEsxFjAUBgNV\n"
+@@ -2818,38 +2737,6 @@
+ "ElMzrdfkviT8tQp21KW8EA==\n"
+ "-----END CERTIFICATE-----",
+ 
+-/* LuxTrust Global Root 2 */
+-"-----BEGIN CERTIFICATE-----\n"
+-"MIIFwzCCA6ugAwIBAgIUCn6m30tEntpqJIWe5rgV0xZ/u7EwDQYJKoZIhvcNAQELBQAwRjEL\n"
+-"MAkGA1UEBhMCTFUxFjAUBgNVBAoMDUx1eFRydXN0IFMuQS4xHzAdBgNVBAMMFkx1eFRydXN0\n"
+-"IEdsb2JhbCBSb290IDIwHhcNMTUwMzA1MTMyMTU3WhcNMzUwMzA1MTMyMTU3WjBGMQswCQYD\n"
+-"VQQGEwJMVTEWMBQGA1UECgwNTHV4VHJ1c3QgUy5BLjEfMB0GA1UEAwwWTHV4VHJ1c3QgR2xv\n"
+-"YmFsIFJvb3QgMjCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBANeFl78RmOnwYoNM\n"
+-"PIf5U2o3C/IPPIfOb9wmKb3FibrJgz337spbxm1Jc7TJRqMbNBM/wYlFV/TZsfs2ZUv7COJI\n"
+-"cRHIbjuend+JZTemhfY7RBi2xjcwYkSSl2l9QjAk5A0MiWtj3sXh306pFGxT4GHO9hcvHTy9\n"
+-"5iJMHZP1EMShduxq3sVs35a0VkBCwGKSMKEtFZSg0iAGCW5qbeXrt77U8PEVfIvmTroTzEsn\n"
+-"Xpk8F12PgX8zPU/TPxvsXD/wPEx1bvKm1Z3aLQdjAsZy6ZS8TEmVT4hSyNvoaYL4zDRbIvCG\n"
+-"p4m9SAptZoFtyMhk+wHh9OHe2Z7d21vUKpkmFRseTJIpgp7VkoGSQXAZ96Tlk0u8d2cx3Rz9\n"
+-"MXANF5kM+Qw5GSoXtTBxVdUPrljhPS80m8+f9niFwpN6cj5mj5wWEWCPnolvZ77gR1o7DJpn\n"
+-"i89Gxq44o/KnvObWhWszJHAiS8sIm7vI+AIpHb4gDEa/a4ebsypmQjVGbKq6rfmYe+lQVRQx\n"
+-"v7HaLe2ArWgk+2mr2HETMOZns4dA/Yl+8kPREd8vZS9kzl8UubG/Mb2HeFpZZYiq/FkySIbW\n"
+-"TLkpS5XTdvN3JW1CHDiDTf2jX5t/Lax5Gw5CMZdjpPuKadUiDTSQMC6otOBttpSsvItO13D8\n"
+-"xTiOZCXhTTmQzsmHhFhxAgMBAAGjgagwgaUwDwYDVR0TAQH/BAUwAwEB/zBCBgNVHSAEOzA5\n"
+-"MDcGByuBKwEBAQowLDAqBggrBgEFBQcCARYeaHR0cHM6Ly9yZXBvc2l0b3J5Lmx1eHRydXN0\n"
+-"Lmx1MA4GA1UdDwEB/wQEAwIBBjAfBgNVHSMEGDAWgBT/GCh2+UgFLKGu8SsbK7JT+Et8szAd\n"
+-"BgNVHQ4EFgQU/xgodvlIBSyhrvErGyuyU/hLfLMwDQYJKoZIhvcNAQELBQADggIBAGoZFO1u\n"
+-"ecEsh9QNcH7X9njJCwROxLHOk3D+sFTAMs2ZMGQXvw/l4jP9BzZAcg4atmpZ1gDlaCDdLnIN\n"
+-"H2pkMSCEfUmmWjfrRcmF9dTHF5kH5ptV5AzoqbTOjFu1EVzPig4N1qx3gf4ynCSecs5U89Bv\n"
+-"olbW7MM3LGVYvlcAGvI1+ut7MV3CwRI9loGIlonBWVx65n9wNOeD4rHh4bhY79SV5GCc8JaX\n"
+-"cozrhAIuZY+kt9J/Z93I055cqqmkoCUUBpvsT34tC38ddfEz2O3OuHVtPlu5mB0xDVbYQw8w\n"
+-"kbIEa91WvpWAVWe+2M2D2RjuLg+GLZKecBPs3lHJQ3gCpU3I+V/EkVhGFndadKpAvAefMLmx\n"
+-"9xIX3eP/JEAdemrRTxgKqpAd60Ae36EeRJIQmvKN4dFLRp7oRUKX6kWZ8+xm1QL68qZKJKre\n"
+-"zrnK+T+Tb/mjuuqlPpmt/f97mfVl7vBZKGfXkJWkE4SphMHozs51k2MavDzq1WQfLSoSOcbD\n"
+-"WjLtR5EWDrw4wVDej8oqkDQc7kGUnF4ZLvhFSZl0kbAEb+MEWrGrKqv+x9CWttrhSmQGbmBN\n"
+-"vUJO/3jaJMobtNeWOWyu8Q6qp31IiyBMz2TWuJdGsE7RKlY6oJO9r4Ak4Ap+58rVyuiFVdw2\n"
+-"KuGUaJPHZnJED4AhMmwlxyOAgwrr\n"
+-"-----END CERTIFICATE-----",
+-
+ /* TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1 */
+ "-----BEGIN CERTIFICATE-----\n"
+ "MIIEYzCCA0ugAwIBAgIBATANBgkqhkiG9w0BAQsFADCB0jELMAkGA1UEBhMCVFIxGDAWBgNV\n"
+@@ -3455,4 +3342,96 @@
+ "jnDrnBdSqEGULoe256YSxXXfW8AKbnuk5F6G+TaU33fD6Q3AOfF5u0aOq0NZJ7cguyPpVkAh\n"
+ "7DE9ZapD8j3fcEThuk0mEDuYn/PIjhs4ViFqUZPTkcpG2om3PVODLAgfi49T3f+sHw==\n"
+ "-----END CERTIFICATE-----",
++
++/* Microsoft ECC Root Certificate Authority 2017 */
++"-----BEGIN CERTIFICATE-----\n"
++"MIICWTCCAd+gAwIBAgIQZvI9r4fei7FK6gxXMQHC7DAKBggqhkjOPQQDAzBlMQswCQYDVQQG\n"
++"EwJVUzEeMBwGA1UEChMVTWljcm9zb2Z0IENvcnBvcmF0aW9uMTYwNAYDVQQDEy1NaWNyb3Nv\n"
++"ZnQgRUNDIFJvb3QgQ2VydGlmaWNhdGUgQXV0aG9yaXR5IDIwMTcwHhcNMTkxMjE4MjMwNjQ1\n"
++"WhcNNDIwNzE4MjMxNjA0WjBlMQswCQYDVQQGEwJVUzEeMBwGA1UEChMVTWljcm9zb2Z0IENv\n"
++"cnBvcmF0aW9uMTYwNAYDVQQDEy1NaWNyb3NvZnQgRUNDIFJvb3QgQ2VydGlmaWNhdGUgQXV0\n"
++"aG9yaXR5IDIwMTcwdjAQBgcqhkjOPQIBBgUrgQQAIgNiAATUvD0CQnVBEyPNgASGAlEvaqiB\n"
++"YgtlzPbKnR5vSmZRogPZnZH6thaxjG7efM3beaYvzrvOcS/lpaso7GMEZpn4+vKTEAXhgShC\n"
++"48Zo9OYbhGBKia/teQ87zvH2RPUBeMCjVDBSMA4GA1UdDwEB/wQEAwIBhjAPBgNVHRMBAf8E\n"
++"BTADAQH/MB0GA1UdDgQWBBTIy5lycFIM+Oa+sgRXKSrPQhDtNTAQBgkrBgEEAYI3FQEEAwIB\n"
++"ADAKBggqhkjOPQQDAwNoADBlAjBY8k3qDPlfXu5gKcs68tvWMoQZP3zVL8KxzJOuULsJMsbG\n"
++"7X7JNpQS5GiFBqIb0C8CMQCZ6Ra0DvpWSNSkMBaReNtUjGUBiudQZsIxtzm6uBoiB078a1QW\n"
++"IP8rtedMDE2mT3M=\n"
++"-----END CERTIFICATE-----",
++
++/* Microsoft RSA Root Certificate Authority 2017 */
++"-----BEGIN CERTIFICATE-----\n"
++"MIIFqDCCA5CgAwIBAgIQHtOXCV/YtLNHcB6qvn9FszANBgkqhkiG9w0BAQwFADBlMQswCQYD\n"
++"VQQGEwJVUzEeMBwGA1UEChMVTWljcm9zb2Z0IENvcnBvcmF0aW9uMTYwNAYDVQQDEy1NaWNy\n"
++"b3NvZnQgUlNBIFJvb3QgQ2VydGlmaWNhdGUgQXV0aG9yaXR5IDIwMTcwHhcNMTkxMjE4MjI1\n"
++"MTIyWhcNNDIwNzE4MjMwMDIzWjBlMQswCQYDVQQGEwJVUzEeMBwGA1UEChMVTWljcm9zb2Z0\n"
++"IENvcnBvcmF0aW9uMTYwNAYDVQQDEy1NaWNyb3NvZnQgUlNBIFJvb3QgQ2VydGlmaWNhdGUg\n"
++"QXV0aG9yaXR5IDIwMTcwggIiMA0GCSqGSIb3DQEBAQUAA4ICDwAwggIKAoICAQDKW76UM4wp\n"
++"lZEWCpW9R2LBifOZNt9GkMml7Xhqb0eRaPgnZ1AzHaGm++DlQ6OEAlcBXZxIQIJTELy/xzto\n"
++"kLaCLeX0ZdDMbRnMlfl7rEqUrQ7eS0MdhweSE5CAg2Q1OQT85elss7YfUJQ4ZVBcF0a5toW1\n"
++"HLUX6NZFndiyJrDKxHBKrmCk3bPZ7Pw71VdyvD/IybLeS2v4I2wDwAW9lcfNcztmgGTjGqwu\n"
++"+UcF8ga2m3P1eDNbx6H7JyqhtJqRjJHTOoI+dkC0zVJhUXAoP8XFWvLJjEm7FFtNyP9nTUwS\n"
++"lq31/niol4fX/V4ggNyhSyL71Imtus5Hl0dVe49FyGcohJUcaDDv70ngNXtk55iwlNpNhTs+\n"
++"VcQor1fznhPbRiefHqJeRIOkpcrVE7NLP8TjwuaGYaRSMLl6IE9vDzhTyzMMEyuP1pq9Ksgt\n"
++"sRx9S1HKR9FIJ3Jdh+vVReZIZZ2vUpC6W6IYZVcSn2i51BVrlMRpIpj0M+Dt+VGOQVDJNE92\n"
++"kKz8OMHY4Xu54+OU4UZpyw4KUGsTuqwPN1q3ErWQgR5WrlcihtnJ0tHXUeOrO8ZV/R4O03QK\n"
++"0dqq6mm4lyiPSMQH+FJDOvTKVTUssKZqwJz58oHhEmrARdlns87/I6KJClTUFLkqqNfs+avN\n"
++"JVgyeY+QW5g5xAgGwax/Dj0ApQIDAQABo1QwUjAOBgNVHQ8BAf8EBAMCAYYwDwYDVR0TAQH/\n"
++"BAUwAwEB/zAdBgNVHQ4EFgQUCctZf4aycI8awznjwNnpv7tNsiMwEAYJKwYBBAGCNxUBBAMC\n"
++"AQAwDQYJKoZIhvcNAQEMBQADggIBAKyvPl3CEZaJjqPnktaXFbgToqZCLgLNFgVZJ8og6Lq4\n"
++"6BrsTaiXVq5lQ7GPAJtSzVXNUzltYkyLDVt8LkS/gxCP81OCgMNPOsduET/m4xaRhPtthH80\n"
++"dK2Jp86519efhGSSvpWhrQlTM93uCupKUY5vVau6tZRGrox/2KJQJWVggEbbMwSubLWYdFQl\n"
++"3JPk+ONVFT24bcMKpBLBaYVu32TxU5nhSnUgnZUP5NbcA/FZGOhHibJXWpS2qdgXKxdJ5XbL\n"
++"wVaZOjex/2kskZGT4d9Mozd2TaGf+G0eHdP67Pv0RR0Tbc/3WeUiJ3IrhvNXuzDtJE3cfVa7\n"
++"o7P4NHmJweDyAmH3pvwPuxwXC65B2Xy9J6P9LjrRk5Sxcx0ki69bIImtt2dmefU6xqaWM/5T\n"
++"kshGsRGRxpl/j8nWZjEgQRCHLQzWwa80mMpkg/sTV9HB8Dx6jKXB/ZUhoHHBk2dxEuqPiApp\n"
++"GWSZI1b7rCoucL5mxAyE7+WL85MB+GqQk2dLsmijtWKP6T+MejteD+eMuMZ87zf9dOLITzNy\n"
++"4ZQ5bb0Sr74MTnB8G2+NszKTc0QWbej09+CVgI+WXTik9KveCjCHk9hNAHFiRSdLOkKEW39l\n"
++"t2c0Ui2cFmuqqNh7o0JMcccMyj6D5KbvtwEwXlGjefVwaaZBRA+GsCyRxj3qrg+E\n"
++"-----END CERTIFICATE-----",
++
++/* e-Szigno Root CA 2017 */
++"-----BEGIN CERTIFICATE-----\n"
++"MIICQDCCAeWgAwIBAgIMAVRI7yH9l1kN9QQKMAoGCCqGSM49BAMCMHExCzAJBgNVBAYTAkhV\n"
++"MREwDwYDVQQHDAhCdWRhcGVzdDEWMBQGA1UECgwNTWljcm9zZWMgTHRkLjEXMBUGA1UEYQwO\n"
++"VkFUSFUtMjM1ODQ0OTcxHjAcBgNVBAMMFWUtU3ppZ25vIFJvb3QgQ0EgMjAxNzAeFw0xNzA4\n"
++"MjIxMjA3MDZaFw00MjA4MjIxMjA3MDZaMHExCzAJBgNVBAYTAkhVMREwDwYDVQQHDAhCdWRh\n"
++"cGVzdDEWMBQGA1UECgwNTWljcm9zZWMgTHRkLjEXMBUGA1UEYQwOVkFUSFUtMjM1ODQ0OTcx\n"
++"HjAcBgNVBAMMFWUtU3ppZ25vIFJvb3QgQ0EgMjAxNzBZMBMGByqGSM49AgEGCCqGSM49AwEH\n"
++"A0IABJbcPYrYsHtvxie+RJCxs1YVe45DJH0ahFnuY2iyxl6H0BVIHqiQrb1TotreOpCmYF9o\n"
++"MrWGQd+HWyx7xf58etqjYzBhMA8GA1UdEwEB/wQFMAMBAf8wDgYDVR0PAQH/BAQDAgEGMB0G\n"
++"A1UdDgQWBBSHERUI0arBeAyxr87GyZDvvzAEwDAfBgNVHSMEGDAWgBSHERUI0arBeAyxr87G\n"
++"yZDvvzAEwDAKBggqhkjOPQQDAgNJADBGAiEAtVfd14pVCzbhhkT61NlojbjcI4qKDdQvfepz\n"
++"7L9NbKgCIQDLpbQS+ue16M9+k/zzNY9vTlp8tLxOsvxyqltZ+efcMQ==\n"
++"-----END CERTIFICATE-----",
++
++/* certSIGN Root CA G2 */
++"-----BEGIN CERTIFICATE-----\n"
++"MIIFRzCCAy+gAwIBAgIJEQA0tk7GNi02MA0GCSqGSIb3DQEBCwUAMEExCzAJBgNVBAYTAlJP\n"
++"MRQwEgYDVQQKEwtDRVJUU0lHTiBTQTEcMBoGA1UECxMTY2VydFNJR04gUk9PVCBDQSBHMjAe\n"
++"Fw0xNzAyMDYwOTI3MzVaFw00MjAyMDYwOTI3MzVaMEExCzAJBgNVBAYTAlJPMRQwEgYDVQQK\n"
++"EwtDRVJUU0lHTiBTQTEcMBoGA1UECxMTY2VydFNJR04gUk9PVCBDQSBHMjCCAiIwDQYJKoZI\n"
++"hvcNAQEBBQADggIPADCCAgoCggIBAMDFdRmRfUR0dIf+DjuW3NgBFszuY5HnC2/OOwppGnzC\n"
++"46+CjobXXo9X69MhWf05N0IwvlDqtg+piNguLWkh59E3GE59kdUWX2tbAMI5Qw02hVK5U2UP\n"
++"HULlj88F0+7cDBrZuIt4ImfkabBoxTzkbFpG583H+u/E7Eu9aqSs/cwoUe+StCmrqzWaTOTE\n"
++"CMYmzPhpn+Sc8CnTXPnGFiWeI8MgwT0PPzhAsP6CRDiqWhqKa2NYOLQV07YRaXseVO6MGiKs\n"
++"cpc/I1mbySKEwQdPzH/iV8oScLumZfNpdWO9lfsbl83kqK/20U6o2YpxJM02PbyWxPFsqa7l\n"
++"zw1uKA2wDrXKUXt4FMMgL3/7FFXhEZn91QqhngLjYl/rNUssuHLoPj1PrCy7Lobio3aP5ZMq\n"
++"z6WryFyNSwb/EkaseMsUBzXgqd+L6a8VTxaJW732jcZZroiFDsGJ6x9nxUWO/203Nit4ZoOR\n"
++"USs9/1F3dmKh7Gc+PoGD4FapUB8fepmrY7+EF3fxDTvf95xhszWYijqy7DwaNz9+j5LP2RIU\n"
++"ZNoQAhVB/0/E6xyjyfqZ90bp4RjZsbgyLcsUDFDYg2WD7rlcz8sFWkz6GZdr1l0T08JcVLwy\n"
++"c6B49fFtHsufpaafItzRUZ6CeWRgKRM+o/1Pcmqr4tTluCRVLERLiohEnMqE0yo7AgMBAAGj\n"
++"QjBAMA8GA1UdEwEB/wQFMAMBAf8wDgYDVR0PAQH/BAQDAgEGMB0GA1UdDgQWBBSCIS1mxteg\n"
++"4BXrzkwJd8RgnlRuAzANBgkqhkiG9w0BAQsFAAOCAgEAYN4auOfyYILVAzOBywaK8SJJ6ejq\n"
++"kX/GM15oGQOGO0MBzwdw5AgeZYWR5hEit/UCI46uuR59H35s5r0l1ZUa8gWmr4UCb6741jH/\n"
++"JclKyMeKqdmfS0mbEVeZkkMR3rYzpMzXjWR91M08KCy0mpbqTfXERMQlqiCA2ClV9+BB/AYm\n"
++"/7k29UMUA2Z44RGx2iBfRgB4ACGlHgAoYXhvqAEBj500mv/0OJD7uNGzcgbJceaBxXntC6Z5\n"
++"8hMLnPddDnskk7RI24Zf3lCGeOdA5jGokHZwYa+cNywRtYK3qq4kNFtyDGkNzVmf9nGvnAvR\n"
++"Cjj5BiKDUyUM/FHE5r7iOZULJK2v0ZXkltd0ZGtxTgI8qoXzIKNDOXZbbFD+mpwUHmUUihW9\n"
++"o4JFWklWatKcsWMy5WHgUyIOpwpJ6st+H6jiYoD2EEVSmAYY3qXNL3+q1Ok+CHLsIwMCPKaq\n"
++"2LxndD0UF/tUSxfj03k9bWtJySgOLnRQvwzZRjoQhsmnP+mg7H/rpXdYaXHmgwo38oZJar55\n"
++"CJD2AhZkPuXaTH4MNMn5X7azKFGnpyuqSfqNZSlO42sTp5SjLVFteAxEy9/eCG/Oo2Sr05WE\n"
++"1LlSVHJ7liXMvGnjSG4N0MedJ5qq+BOS3R7fY581qRY27Iy4g/Q9iY/NtBde17MXQRBdJ3Ng\n"
++"hVdJIgc=\n"
++"-----END CERTIFICATE-----",
+ #endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+diff --git a/tools/certdata.txt b/tools/certdata.txt
+index ea14926063b4b5e61a90d0f330d60172317e4346..fcef935cbfc96c0cc0b94b925fc3505522a2cd3a 100644
+--- a/tools/certdata.txt
++++ b/tools/certdata.txt
+@@ -674,285 +674,6 @@ CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+ CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+ 
+-#
+-# Certificate "Verisign Class 3 Public Primary Certification Authority - G3"
+-#
+-# Issuer: CN=VeriSign Class 3 Public Primary Certification Authority - G3,OU="(c) 1999 VeriSign, Inc. - For authorized use only",OU=VeriSign Trust Network,O="VeriSign, Inc.",C=US
+-# Serial Number:00:9b:7e:06:49:a3:3e:62:b9:d5:ee:90:48:71:29:ef:57
+-# Subject: CN=VeriSign Class 3 Public Primary Certification Authority - G3,OU="(c) 1999 VeriSign, Inc. - For authorized use only",OU=VeriSign Trust Network,O="VeriSign, Inc.",C=US
+-# Not Valid Before: Fri Oct 01 00:00:00 1999
+-# Not Valid After : Wed Jul 16 23:59:59 2036
+-# Fingerprint (MD5): CD:68:B6:A7:C7:C4:CE:75:E0:1D:4F:57:44:61:92:09
+-# Fingerprint (SHA1): 13:2D:0D:45:53:4B:69:97:CD:B2:D5:C3:39:E2:55:76:60:9B:5C:C6
+-CKA_CLASS CK_OBJECT_CLASS CKO_CERTIFICATE
+-CKA_TOKEN CK_BBOOL CK_TRUE
+-CKA_PRIVATE CK_BBOOL CK_FALSE
+-CKA_MODIFIABLE CK_BBOOL CK_FALSE
+-CKA_LABEL UTF8 "Verisign Class 3 Public Primary Certification Authority - G3"
+-CKA_CERTIFICATE_TYPE CK_CERTIFICATE_TYPE CKC_X_509
+-CKA_SUBJECT MULTILINE_OCTAL
+-\060\201\312\061\013\060\011\006\003\125\004\006\023\002\125\123
+-\061\027\060\025\006\003\125\004\012\023\016\126\145\162\151\123
+-\151\147\156\054\040\111\156\143\056\061\037\060\035\006\003\125
+-\004\013\023\026\126\145\162\151\123\151\147\156\040\124\162\165
+-\163\164\040\116\145\164\167\157\162\153\061\072\060\070\006\003
+-\125\004\013\023\061\050\143\051\040\061\071\071\071\040\126\145
+-\162\151\123\151\147\156\054\040\111\156\143\056\040\055\040\106
+-\157\162\040\141\165\164\150\157\162\151\172\145\144\040\165\163
+-\145\040\157\156\154\171\061\105\060\103\006\003\125\004\003\023
+-\074\126\145\162\151\123\151\147\156\040\103\154\141\163\163\040
+-\063\040\120\165\142\154\151\143\040\120\162\151\155\141\162\171
+-\040\103\145\162\164\151\146\151\143\141\164\151\157\156\040\101
+-\165\164\150\157\162\151\164\171\040\055\040\107\063
+-END
+-CKA_ID UTF8 "0"
+-CKA_ISSUER MULTILINE_OCTAL
+-\060\201\312\061\013\060\011\006\003\125\004\006\023\002\125\123
+-\061\027\060\025\006\003\125\004\012\023\016\126\145\162\151\123
+-\151\147\156\054\040\111\156\143\056\061\037\060\035\006\003\125
+-\004\013\023\026\126\145\162\151\123\151\147\156\040\124\162\165
+-\163\164\040\116\145\164\167\157\162\153\061\072\060\070\006\003
+-\125\004\013\023\061\050\143\051\040\061\071\071\071\040\126\145
+-\162\151\123\151\147\156\054\040\111\156\143\056\040\055\040\106
+-\157\162\040\141\165\164\150\157\162\151\172\145\144\040\165\163
+-\145\040\157\156\154\171\061\105\060\103\006\003\125\004\003\023
+-\074\126\145\162\151\123\151\147\156\040\103\154\141\163\163\040
+-\063\040\120\165\142\154\151\143\040\120\162\151\155\141\162\171
+-\040\103\145\162\164\151\146\151\143\141\164\151\157\156\040\101
+-\165\164\150\157\162\151\164\171\040\055\040\107\063
+-END
+-CKA_SERIAL_NUMBER MULTILINE_OCTAL
+-\002\021\000\233\176\006\111\243\076\142\271\325\356\220\110\161
+-\051\357\127
+-END
+-CKA_VALUE MULTILINE_OCTAL
+-\060\202\004\032\060\202\003\002\002\021\000\233\176\006\111\243
+-\076\142\271\325\356\220\110\161\051\357\127\060\015\006\011\052
+-\206\110\206\367\015\001\001\005\005\000\060\201\312\061\013\060
+-\011\006\003\125\004\006\023\002\125\123\061\027\060\025\006\003
+-\125\004\012\023\016\126\145\162\151\123\151\147\156\054\040\111
+-\156\143\056\061\037\060\035\006\003\125\004\013\023\026\126\145
+-\162\151\123\151\147\156\040\124\162\165\163\164\040\116\145\164
+-\167\157\162\153\061\072\060\070\006\003\125\004\013\023\061\050
+-\143\051\040\061\071\071\071\040\126\145\162\151\123\151\147\156
+-\054\040\111\156\143\056\040\055\040\106\157\162\040\141\165\164
+-\150\157\162\151\172\145\144\040\165\163\145\040\157\156\154\171
+-\061\105\060\103\006\003\125\004\003\023\074\126\145\162\151\123
+-\151\147\156\040\103\154\141\163\163\040\063\040\120\165\142\154
+-\151\143\040\120\162\151\155\141\162\171\040\103\145\162\164\151
+-\146\151\143\141\164\151\157\156\040\101\165\164\150\157\162\151
+-\164\171\040\055\040\107\063\060\036\027\015\071\071\061\060\060
+-\061\060\060\060\060\060\060\132\027\015\063\066\060\067\061\066
+-\062\063\065\071\065\071\132\060\201\312\061\013\060\011\006\003
+-\125\004\006\023\002\125\123\061\027\060\025\006\003\125\004\012
+-\023\016\126\145\162\151\123\151\147\156\054\040\111\156\143\056
+-\061\037\060\035\006\003\125\004\013\023\026\126\145\162\151\123
+-\151\147\156\040\124\162\165\163\164\040\116\145\164\167\157\162
+-\153\061\072\060\070\006\003\125\004\013\023\061\050\143\051\040
+-\061\071\071\071\040\126\145\162\151\123\151\147\156\054\040\111
+-\156\143\056\040\055\040\106\157\162\040\141\165\164\150\157\162
+-\151\172\145\144\040\165\163\145\040\157\156\154\171\061\105\060
+-\103\006\003\125\004\003\023\074\126\145\162\151\123\151\147\156
+-\040\103\154\141\163\163\040\063\040\120\165\142\154\151\143\040
+-\120\162\151\155\141\162\171\040\103\145\162\164\151\146\151\143
+-\141\164\151\157\156\040\101\165\164\150\157\162\151\164\171\040
+-\055\040\107\063\060\202\001\042\060\015\006\011\052\206\110\206
+-\367\015\001\001\001\005\000\003\202\001\017\000\060\202\001\012
+-\002\202\001\001\000\313\272\234\122\374\170\037\032\036\157\033
+-\067\163\275\370\311\153\224\022\060\117\360\066\107\365\320\221
+-\012\365\027\310\245\141\301\026\100\115\373\212\141\220\345\166
+-\040\301\021\006\175\253\054\156\246\365\021\101\216\372\055\255
+-\052\141\131\244\147\046\114\320\350\274\122\133\160\040\004\130
+-\321\172\311\244\151\274\203\027\144\255\005\213\274\320\130\316
+-\215\214\365\353\360\102\111\013\235\227\047\147\062\156\341\256
+-\223\025\034\160\274\040\115\057\030\336\222\210\350\154\205\127
+-\021\032\351\176\343\046\021\124\242\105\226\125\203\312\060\211
+-\350\334\330\243\355\052\200\077\177\171\145\127\076\025\040\146
+-\010\057\225\223\277\252\107\057\250\106\227\360\022\342\376\302
+-\012\053\121\346\166\346\267\106\267\342\015\246\314\250\303\114
+-\131\125\211\346\350\123\134\034\352\235\360\142\026\013\247\311
+-\137\014\360\336\302\166\316\257\367\152\362\372\101\246\242\063
+-\024\311\345\172\143\323\236\142\067\325\205\145\236\016\346\123
+-\044\164\033\136\035\022\123\133\307\054\347\203\111\073\025\256
+-\212\150\271\127\227\002\003\001\000\001\060\015\006\011\052\206
+-\110\206\367\015\001\001\005\005\000\003\202\001\001\000\021\024
+-\226\301\253\222\010\367\077\057\311\262\376\344\132\237\144\336
+-\333\041\117\206\231\064\166\066\127\335\320\025\057\305\255\177
+-\025\037\067\142\163\076\324\347\137\316\027\003\333\065\372\053
+-\333\256\140\011\137\036\137\217\156\273\013\075\352\132\023\036
+-\014\140\157\265\300\265\043\042\056\007\013\313\251\164\313\107
+-\273\035\301\327\245\153\314\057\322\102\375\111\335\247\211\317
+-\123\272\332\000\132\050\277\202\337\370\272\023\035\120\206\202
+-\375\216\060\217\051\106\260\036\075\065\332\070\142\026\030\112
+-\255\346\266\121\154\336\257\142\353\001\320\036\044\376\172\217
+-\022\032\022\150\270\373\146\231\024\024\105\134\256\347\256\151
+-\027\201\053\132\067\311\136\052\364\306\342\241\134\124\233\246
+-\124\000\317\360\361\301\307\230\060\032\073\066\026\333\243\156
+-\352\375\255\262\302\332\357\002\107\023\212\300\361\263\061\255
+-\117\034\341\117\234\257\017\014\235\367\170\015\330\364\065\126
+-\200\332\267\155\027\217\235\036\201\144\341\376\305\105\272\255
+-\153\271\012\172\116\117\113\204\356\113\361\175\335\021
+-END
+-CKA_NSS_MOZILLA_CA_POLICY CK_BBOOL CK_TRUE
+-CKA_NSS_SERVER_DISTRUST_AFTER CK_BBOOL CK_FALSE
+-CKA_NSS_EMAIL_DISTRUST_AFTER CK_BBOOL CK_FALSE
+-
+-# Trust for Certificate "Verisign Class 3 Public Primary Certification Authority - G3"
+-# Issuer: CN=VeriSign Class 3 Public Primary Certification Authority - G3,OU="(c) 1999 VeriSign, Inc. - For authorized use only",OU=VeriSign Trust Network,O="VeriSign, Inc.",C=US
+-# Serial Number:00:9b:7e:06:49:a3:3e:62:b9:d5:ee:90:48:71:29:ef:57
+-# Subject: CN=VeriSign Class 3 Public Primary Certification Authority - G3,OU="(c) 1999 VeriSign, Inc. - For authorized use only",OU=VeriSign Trust Network,O="VeriSign, Inc.",C=US
+-# Not Valid Before: Fri Oct 01 00:00:00 1999
+-# Not Valid After : Wed Jul 16 23:59:59 2036
+-# Fingerprint (MD5): CD:68:B6:A7:C7:C4:CE:75:E0:1D:4F:57:44:61:92:09
+-# Fingerprint (SHA1): 13:2D:0D:45:53:4B:69:97:CD:B2:D5:C3:39:E2:55:76:60:9B:5C:C6
+-CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST
+-CKA_TOKEN CK_BBOOL CK_TRUE
+-CKA_PRIVATE CK_BBOOL CK_FALSE
+-CKA_MODIFIABLE CK_BBOOL CK_FALSE
+-CKA_LABEL UTF8 "Verisign Class 3 Public Primary Certification Authority - G3"
+-CKA_CERT_SHA1_HASH MULTILINE_OCTAL
+-\023\055\015\105\123\113\151\227\315\262\325\303\071\342\125\166
+-\140\233\134\306
+-END
+-CKA_CERT_MD5_HASH MULTILINE_OCTAL
+-\315\150\266\247\307\304\316\165\340\035\117\127\104\141\222\011
+-END
+-CKA_ISSUER MULTILINE_OCTAL
+-\060\201\312\061\013\060\011\006\003\125\004\006\023\002\125\123
+-\061\027\060\025\006\003\125\004\012\023\016\126\145\162\151\123
+-\151\147\156\054\040\111\156\143\056\061\037\060\035\006\003\125
+-\004\013\023\026\126\145\162\151\123\151\147\156\040\124\162\165
+-\163\164\040\116\145\164\167\157\162\153\061\072\060\070\006\003
+-\125\004\013\023\061\050\143\051\040\061\071\071\071\040\126\145
+-\162\151\123\151\147\156\054\040\111\156\143\056\040\055\040\106
+-\157\162\040\141\165\164\150\157\162\151\172\145\144\040\165\163
+-\145\040\157\156\154\171\061\105\060\103\006\003\125\004\003\023
+-\074\126\145\162\151\123\151\147\156\040\103\154\141\163\163\040
+-\063\040\120\165\142\154\151\143\040\120\162\151\155\141\162\171
+-\040\103\145\162\164\151\146\151\143\141\164\151\157\156\040\101
+-\165\164\150\157\162\151\164\171\040\055\040\107\063
+-END
+-CKA_SERIAL_NUMBER MULTILINE_OCTAL
+-\002\021\000\233\176\006\111\243\076\142\271\325\356\220\110\161
+-\051\357\127
+-END
+-CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+-CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+-CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+-CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+-
+-# Distrust "Distrust: O=Egypt Trust, OU=VeriSign Trust Network (cert 1/3)"
+-# Issuer: CN=VeriSign Class 3 Public Primary Certification Authority - G3,OU="(c) 1999 VeriSign, Inc. - For authorized use only",OU=VeriSign Trust Network,O="VeriSign, Inc.",C=US
+-# Serial Number:4c:00:36:1b:e5:08:2b:a9:aa:ce:74:0a:05:3e:fb:34
+-# Subject: CN=Egypt Trust Class 3 Managed PKI Enterprise Administrator CA,OU=Terms of use at https://www.egypttrust.com/repository/rpa (c)08,OU=VeriSign Trust Network,O=Egypt Trust,C=EG
+-# Not Valid Before: Sun May 18 00:00:00 2008
+-# Not Valid After : Thu May 17 23:59:59 2018
+-# Fingerprint (MD5): A7:91:05:96:B1:56:01:26:4E:BF:80:80:08:86:1B:4D
+-# Fingerprint (SHA1): 6A:2C:5C:B0:94:D5:E0:B7:57:FB:0F:58:42:AA:C8:13:A5:80:2F:E1
+-CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST
+-CKA_TOKEN CK_BBOOL CK_TRUE
+-CKA_PRIVATE CK_BBOOL CK_FALSE
+-CKA_MODIFIABLE CK_BBOOL CK_FALSE
+-CKA_LABEL UTF8 "Distrust: O=Egypt Trust, OU=VeriSign Trust Network (cert 1/3)"
+-CKA_ISSUER MULTILINE_OCTAL
+-\060\201\312\061\013\060\011\006\003\125\004\006\023\002\125\123
+-\061\027\060\025\006\003\125\004\012\023\016\126\145\162\151\123
+-\151\147\156\054\040\111\156\143\056\061\037\060\035\006\003\125
+-\004\013\023\026\126\145\162\151\123\151\147\156\040\124\162\165
+-\163\164\040\116\145\164\167\157\162\153\061\072\060\070\006\003
+-\125\004\013\023\061\050\143\051\040\061\071\071\071\040\126\145
+-\162\151\123\151\147\156\054\040\111\156\143\056\040\055\040\106
+-\157\162\040\141\165\164\150\157\162\151\172\145\144\040\165\163
+-\145\040\157\156\154\171\061\105\060\103\006\003\125\004\003\023
+-\074\126\145\162\151\123\151\147\156\040\103\154\141\163\163\040
+-\063\040\120\165\142\154\151\143\040\120\162\151\155\141\162\171
+-\040\103\145\162\164\151\146\151\143\141\164\151\157\156\040\101
+-\165\164\150\157\162\151\164\171\040\055\040\107\063
+-END
+-CKA_SERIAL_NUMBER MULTILINE_OCTAL
+-\002\020\114\000\066\033\345\010\053\251\252\316\164\012\005\076
+-\373\064
+-END
+-CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_NOT_TRUSTED
+-CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_NOT_TRUSTED
+-CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_NOT_TRUSTED
+-CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+-
+-
+-# Distrust "Distrust: O=Egypt Trust, OU=VeriSign Trust Network (cert 2/3)"
+-# Issuer: CN=VeriSign Class 3 Public Primary Certification Authority - G3,OU="(c) 1999 VeriSign, Inc. - For authorized use only",OU=VeriSign Trust Network,O="VeriSign, Inc.",C=US
+-# Serial Number:3e:0c:9e:87:69:aa:95:5c:ea:23:d8:45:9e:d4:5b:51
+-# Subject: CN=Egypt Trust Class 3 Managed PKI Operational Administrator CA,OU=Terms of use at https://www.egypttrust.com/repository/rpa (c)08,OU=VeriSign Trust Network,O=Egypt Trust,C=EG
+-# Not Valid Before: Sun May 18 00:00:00 2008
+-# Not Valid After : Thu May 17 23:59:59 2018
+-# Fingerprint (MD5): D0:C3:71:17:3E:39:80:C6:50:4F:04:22:DF:40:E1:34
+-# Fingerprint (SHA1): 9C:65:5E:D5:FA:E3:B8:96:4D:89:72:F6:3A:63:53:59:3F:5E:B4:4E
+-CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST
+-CKA_TOKEN CK_BBOOL CK_TRUE
+-CKA_PRIVATE CK_BBOOL CK_FALSE
+-CKA_MODIFIABLE CK_BBOOL CK_FALSE
+-CKA_LABEL UTF8 "Distrust: O=Egypt Trust, OU=VeriSign Trust Network (cert 2/3)"
+-CKA_ISSUER MULTILINE_OCTAL
+-\060\201\312\061\013\060\011\006\003\125\004\006\023\002\125\123
+-\061\027\060\025\006\003\125\004\012\023\016\126\145\162\151\123
+-\151\147\156\054\040\111\156\143\056\061\037\060\035\006\003\125
+-\004\013\023\026\126\145\162\151\123\151\147\156\040\124\162\165
+-\163\164\040\116\145\164\167\157\162\153\061\072\060\070\006\003
+-\125\004\013\023\061\050\143\051\040\061\071\071\071\040\126\145
+-\162\151\123\151\147\156\054\040\111\156\143\056\040\055\040\106
+-\157\162\040\141\165\164\150\157\162\151\172\145\144\040\165\163
+-\145\040\157\156\154\171\061\105\060\103\006\003\125\004\003\023
+-\074\126\145\162\151\123\151\147\156\040\103\154\141\163\163\040
+-\063\040\120\165\142\154\151\143\040\120\162\151\155\141\162\171
+-\040\103\145\162\164\151\146\151\143\141\164\151\157\156\040\101
+-\165\164\150\157\162\151\164\171\040\055\040\107\063
+-END
+-CKA_SERIAL_NUMBER MULTILINE_OCTAL
+-\002\020\076\014\236\207\151\252\225\134\352\043\330\105\236\324
+-\133\121
+-END
+-CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_NOT_TRUSTED
+-CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_NOT_TRUSTED
+-CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_NOT_TRUSTED
+-CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+-
+-# Distrust "Distrust: O=Egypt Trust, OU=VeriSign Trust Network (cert 3/3)"
+-# Issuer: CN=VeriSign Class 3 Public Primary Certification Authority - G3,OU="(c) 1999 VeriSign, Inc. - For authorized use only",OU=VeriSign Trust Network,O="VeriSign, Inc.",C=US
+-# Serial Number:12:bd:26:a2:ae:33:c0:7f:24:7b:6a:58:69:f2:0a:76
+-# Subject: CN=Egypt Trust Class 3 Managed PKI SCO Administrator CA,OU=Terms of use at https://www.egypttrust.com/repository/rpa (c)08,OU=VeriSign Trust Network,O=Egypt Trust,C=EG
+-# Not Valid Before: Sun May 18 00:00:00 2008
+-# Not Valid After : Thu May 17 23:59:59 2018
+-# Fingerprint (MD5): C2:13:5E:B2:67:8A:5C:F7:91:EF:8F:29:0F:9B:77:6E
+-# Fingerprint (SHA1): 83:23:F1:4F:BC:9F:9B:80:B7:9D:ED:14:CD:01:57:CD:FB:08:95:D2
+-CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST
+-CKA_TOKEN CK_BBOOL CK_TRUE
+-CKA_PRIVATE CK_BBOOL CK_FALSE
+-CKA_MODIFIABLE CK_BBOOL CK_FALSE
+-CKA_LABEL UTF8 "Distrust: O=Egypt Trust, OU=VeriSign Trust Network (cert 3/3)"
+-CKA_ISSUER MULTILINE_OCTAL
+-\060\201\312\061\013\060\011\006\003\125\004\006\023\002\125\123
+-\061\027\060\025\006\003\125\004\012\023\016\126\145\162\151\123
+-\151\147\156\054\040\111\156\143\056\061\037\060\035\006\003\125
+-\004\013\023\026\126\145\162\151\123\151\147\156\040\124\162\165
+-\163\164\040\116\145\164\167\157\162\153\061\072\060\070\006\003
+-\125\004\013\023\061\050\143\051\040\061\071\071\071\040\126\145
+-\162\151\123\151\147\156\054\040\111\156\143\056\040\055\040\106
+-\157\162\040\141\165\164\150\157\162\151\172\145\144\040\165\163
+-\145\040\157\156\154\171\061\105\060\103\006\003\125\004\003\023
+-\074\126\145\162\151\123\151\147\156\040\103\154\141\163\163\040
+-\063\040\120\165\142\154\151\143\040\120\162\151\155\141\162\171
+-\040\103\145\162\164\151\146\151\143\141\164\151\157\156\040\101
+-\165\164\150\157\162\151\164\171\040\055\040\107\063
+-END
+-CKA_SERIAL_NUMBER MULTILINE_OCTAL
+-\002\020\022\275\046\242\256\063\300\177\044\173\152\130\151\362
+-\012\166
+-END
+-CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_NOT_TRUSTED
+-CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_NOT_TRUSTED
+-CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_NOT_TRUSTED
+-CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+-
+ #
+ # Certificate "Entrust.net Premium 2048 Secure Server CA"
+ #
+@@ -1251,351 +972,52 @@ CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+ 
+ #
+-# Certificate "AddTrust Low-Value Services Root"
++# Certificate "Entrust Root Certification Authority"
+ #
+-# Issuer: CN=AddTrust Class 1 CA Root,OU=AddTrust TTP Network,O=AddTrust AB,C=SE
+-# Serial Number: 1 (0x1)
+-# Subject: CN=AddTrust Class 1 CA Root,OU=AddTrust TTP Network,O=AddTrust AB,C=SE
+-# Not Valid Before: Tue May 30 10:38:31 2000
+-# Not Valid After : Sat May 30 10:38:31 2020
+-# Fingerprint (MD5): 1E:42:95:02:33:92:6B:B9:5F:C0:7F:DA:D6:B2:4B:FC
+-# Fingerprint (SHA1): CC:AB:0E:A0:4C:23:01:D6:69:7B:DD:37:9F:CD:12:EB:24:E3:94:9D
++# Issuer: CN=Entrust Root Certification Authority,OU="(c) 2006 Entrust, Inc.",OU=www.entrust.net/CPS is incorporated by reference,O="Entrust, Inc.",C=US
++# Serial Number: 1164660820 (0x456b5054)
++# Subject: CN=Entrust Root Certification Authority,OU="(c) 2006 Entrust, Inc.",OU=www.entrust.net/CPS is incorporated by reference,O="Entrust, Inc.",C=US
++# Not Valid Before: Mon Nov 27 20:23:42 2006
++# Not Valid After : Fri Nov 27 20:53:42 2026
++# Fingerprint (MD5): D6:A5:C3:ED:5D:DD:3E:00:C1:3D:87:92:1F:1D:3F:E4
++# Fingerprint (SHA1): B3:1E:B1:B7:40:E3:6C:84:02:DA:DC:37:D4:4D:F5:D4:67:49:52:F9
+ CKA_CLASS CK_OBJECT_CLASS CKO_CERTIFICATE
+ CKA_TOKEN CK_BBOOL CK_TRUE
+ CKA_PRIVATE CK_BBOOL CK_FALSE
+ CKA_MODIFIABLE CK_BBOOL CK_FALSE
+-CKA_LABEL UTF8 "AddTrust Low-Value Services Root"
++CKA_LABEL UTF8 "Entrust Root Certification Authority"
+ CKA_CERTIFICATE_TYPE CK_CERTIFICATE_TYPE CKC_X_509
+ CKA_SUBJECT MULTILINE_OCTAL
+-\060\145\061\013\060\011\006\003\125\004\006\023\002\123\105\061
+-\024\060\022\006\003\125\004\012\023\013\101\144\144\124\162\165
+-\163\164\040\101\102\061\035\060\033\006\003\125\004\013\023\024
+-\101\144\144\124\162\165\163\164\040\124\124\120\040\116\145\164
+-\167\157\162\153\061\041\060\037\006\003\125\004\003\023\030\101
+-\144\144\124\162\165\163\164\040\103\154\141\163\163\040\061\040
+-\103\101\040\122\157\157\164
++\060\201\260\061\013\060\011\006\003\125\004\006\023\002\125\123
++\061\026\060\024\006\003\125\004\012\023\015\105\156\164\162\165
++\163\164\054\040\111\156\143\056\061\071\060\067\006\003\125\004
++\013\023\060\167\167\167\056\145\156\164\162\165\163\164\056\156
++\145\164\057\103\120\123\040\151\163\040\151\156\143\157\162\160
++\157\162\141\164\145\144\040\142\171\040\162\145\146\145\162\145
++\156\143\145\061\037\060\035\006\003\125\004\013\023\026\050\143
++\051\040\062\060\060\066\040\105\156\164\162\165\163\164\054\040
++\111\156\143\056\061\055\060\053\006\003\125\004\003\023\044\105
++\156\164\162\165\163\164\040\122\157\157\164\040\103\145\162\164
++\151\146\151\143\141\164\151\157\156\040\101\165\164\150\157\162
++\151\164\171
+ END
+ CKA_ID UTF8 "0"
+ CKA_ISSUER MULTILINE_OCTAL
+-\060\145\061\013\060\011\006\003\125\004\006\023\002\123\105\061
+-\024\060\022\006\003\125\004\012\023\013\101\144\144\124\162\165
+-\163\164\040\101\102\061\035\060\033\006\003\125\004\013\023\024
+-\101\144\144\124\162\165\163\164\040\124\124\120\040\116\145\164
+-\167\157\162\153\061\041\060\037\006\003\125\004\003\023\030\101
+-\144\144\124\162\165\163\164\040\103\154\141\163\163\040\061\040
+-\103\101\040\122\157\157\164
++\060\201\260\061\013\060\011\006\003\125\004\006\023\002\125\123
++\061\026\060\024\006\003\125\004\012\023\015\105\156\164\162\165
++\163\164\054\040\111\156\143\056\061\071\060\067\006\003\125\004
++\013\023\060\167\167\167\056\145\156\164\162\165\163\164\056\156
++\145\164\057\103\120\123\040\151\163\040\151\156\143\157\162\160
++\157\162\141\164\145\144\040\142\171\040\162\145\146\145\162\145
++\156\143\145\061\037\060\035\006\003\125\004\013\023\026\050\143
++\051\040\062\060\060\066\040\105\156\164\162\165\163\164\054\040
++\111\156\143\056\061\055\060\053\006\003\125\004\003\023\044\105
++\156\164\162\165\163\164\040\122\157\157\164\040\103\145\162\164
++\151\146\151\143\141\164\151\157\156\040\101\165\164\150\157\162
++\151\164\171
+ END
+ CKA_SERIAL_NUMBER MULTILINE_OCTAL
+-\002\001\001
+-END
+-CKA_VALUE MULTILINE_OCTAL
+-\060\202\004\030\060\202\003\000\240\003\002\001\002\002\001\001
+-\060\015\006\011\052\206\110\206\367\015\001\001\005\005\000\060
+-\145\061\013\060\011\006\003\125\004\006\023\002\123\105\061\024
+-\060\022\006\003\125\004\012\023\013\101\144\144\124\162\165\163
+-\164\040\101\102\061\035\060\033\006\003\125\004\013\023\024\101
+-\144\144\124\162\165\163\164\040\124\124\120\040\116\145\164\167
+-\157\162\153\061\041\060\037\006\003\125\004\003\023\030\101\144
+-\144\124\162\165\163\164\040\103\154\141\163\163\040\061\040\103
+-\101\040\122\157\157\164\060\036\027\015\060\060\060\065\063\060
+-\061\060\063\070\063\061\132\027\015\062\060\060\065\063\060\061
+-\060\063\070\063\061\132\060\145\061\013\060\011\006\003\125\004
+-\006\023\002\123\105\061\024\060\022\006\003\125\004\012\023\013
+-\101\144\144\124\162\165\163\164\040\101\102\061\035\060\033\006
+-\003\125\004\013\023\024\101\144\144\124\162\165\163\164\040\124
+-\124\120\040\116\145\164\167\157\162\153\061\041\060\037\006\003
+-\125\004\003\023\030\101\144\144\124\162\165\163\164\040\103\154
+-\141\163\163\040\061\040\103\101\040\122\157\157\164\060\202\001
+-\042\060\015\006\011\052\206\110\206\367\015\001\001\001\005\000
+-\003\202\001\017\000\060\202\001\012\002\202\001\001\000\226\226
+-\324\041\111\140\342\153\350\101\007\014\336\304\340\334\023\043
+-\315\301\065\307\373\326\116\021\012\147\136\365\006\133\153\245
+-\010\073\133\051\026\072\347\207\262\064\006\305\274\005\245\003
+-\174\202\313\051\020\256\341\210\201\275\326\236\323\376\055\126
+-\301\025\316\343\046\235\025\056\020\373\006\217\060\004\336\247
+-\264\143\264\377\261\234\256\074\257\167\266\126\305\265\253\242
+-\351\151\072\075\016\063\171\062\077\160\202\222\231\141\155\215
+-\060\010\217\161\077\246\110\127\031\370\045\334\113\146\134\245
+-\164\217\230\256\310\371\300\006\042\347\254\163\337\245\056\373
+-\122\334\261\025\145\040\372\065\146\151\336\337\054\361\156\274
+-\060\333\054\044\022\333\353\065\065\150\220\313\000\260\227\041
+-\075\164\041\043\145\064\053\273\170\131\243\326\341\166\071\232
+-\244\111\216\214\164\257\156\244\232\243\331\233\322\070\134\233
+-\242\030\314\165\043\204\276\353\342\115\063\161\216\032\360\302
+-\370\307\035\242\255\003\227\054\370\317\045\306\366\270\044\061
+-\261\143\135\222\177\143\360\045\311\123\056\037\277\115\002\003
+-\001\000\001\243\201\322\060\201\317\060\035\006\003\125\035\016
+-\004\026\004\024\225\261\264\360\224\266\275\307\332\321\021\011
+-\041\276\301\257\111\375\020\173\060\013\006\003\125\035\017\004
+-\004\003\002\001\006\060\017\006\003\125\035\023\001\001\377\004
+-\005\060\003\001\001\377\060\201\217\006\003\125\035\043\004\201
+-\207\060\201\204\200\024\225\261\264\360\224\266\275\307\332\321
+-\021\011\041\276\301\257\111\375\020\173\241\151\244\147\060\145
+-\061\013\060\011\006\003\125\004\006\023\002\123\105\061\024\060
+-\022\006\003\125\004\012\023\013\101\144\144\124\162\165\163\164
+-\040\101\102\061\035\060\033\006\003\125\004\013\023\024\101\144
+-\144\124\162\165\163\164\040\124\124\120\040\116\145\164\167\157
+-\162\153\061\041\060\037\006\003\125\004\003\023\030\101\144\144
+-\124\162\165\163\164\040\103\154\141\163\163\040\061\040\103\101
+-\040\122\157\157\164\202\001\001\060\015\006\011\052\206\110\206
+-\367\015\001\001\005\005\000\003\202\001\001\000\054\155\144\033
+-\037\315\015\335\271\001\372\226\143\064\062\110\107\231\256\227
+-\355\375\162\026\246\163\107\132\364\353\335\351\365\326\373\105
+-\314\051\211\104\135\277\106\071\075\350\356\274\115\124\206\036
+-\035\154\343\027\047\103\341\211\126\053\251\157\162\116\111\063
+-\343\162\174\052\043\232\274\076\377\050\052\355\243\377\034\043
+-\272\103\127\011\147\115\113\142\006\055\370\377\154\235\140\036
+-\330\034\113\175\265\061\057\331\320\174\135\370\336\153\203\030
+-\170\067\127\057\350\063\007\147\337\036\307\153\052\225\166\256
+-\217\127\243\360\364\122\264\251\123\010\317\340\117\323\172\123
+-\213\375\273\034\126\066\362\376\262\266\345\166\273\325\042\145
+-\247\077\376\321\146\255\013\274\153\231\206\357\077\175\363\030
+-\062\312\173\306\343\253\144\106\225\370\046\151\331\125\203\173
+-\054\226\007\377\131\054\104\243\306\345\351\251\334\241\143\200
+-\132\041\136\041\317\123\124\360\272\157\211\333\250\252\225\317
+-\213\343\161\314\036\033\040\104\010\300\172\266\100\375\304\344
+-\065\341\035\026\034\320\274\053\216\326\161\331
+-END
+-CKA_NSS_MOZILLA_CA_POLICY CK_BBOOL CK_TRUE
+-CKA_NSS_SERVER_DISTRUST_AFTER CK_BBOOL CK_FALSE
+-CKA_NSS_EMAIL_DISTRUST_AFTER CK_BBOOL CK_FALSE
+-
+-# Trust for Certificate "AddTrust Low-Value Services Root"
+-# Issuer: CN=AddTrust Class 1 CA Root,OU=AddTrust TTP Network,O=AddTrust AB,C=SE
+-# Serial Number: 1 (0x1)
+-# Subject: CN=AddTrust Class 1 CA Root,OU=AddTrust TTP Network,O=AddTrust AB,C=SE
+-# Not Valid Before: Tue May 30 10:38:31 2000
+-# Not Valid After : Sat May 30 10:38:31 2020
+-# Fingerprint (MD5): 1E:42:95:02:33:92:6B:B9:5F:C0:7F:DA:D6:B2:4B:FC
+-# Fingerprint (SHA1): CC:AB:0E:A0:4C:23:01:D6:69:7B:DD:37:9F:CD:12:EB:24:E3:94:9D
+-CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST
+-CKA_TOKEN CK_BBOOL CK_TRUE
+-CKA_PRIVATE CK_BBOOL CK_FALSE
+-CKA_MODIFIABLE CK_BBOOL CK_FALSE
+-CKA_LABEL UTF8 "AddTrust Low-Value Services Root"
+-CKA_CERT_SHA1_HASH MULTILINE_OCTAL
+-\314\253\016\240\114\043\001\326\151\173\335\067\237\315\022\353
+-\044\343\224\235
+-END
+-CKA_CERT_MD5_HASH MULTILINE_OCTAL
+-\036\102\225\002\063\222\153\271\137\300\177\332\326\262\113\374
+-END
+-CKA_ISSUER MULTILINE_OCTAL
+-\060\145\061\013\060\011\006\003\125\004\006\023\002\123\105\061
+-\024\060\022\006\003\125\004\012\023\013\101\144\144\124\162\165
+-\163\164\040\101\102\061\035\060\033\006\003\125\004\013\023\024
+-\101\144\144\124\162\165\163\164\040\124\124\120\040\116\145\164
+-\167\157\162\153\061\041\060\037\006\003\125\004\003\023\030\101
+-\144\144\124\162\165\163\164\040\103\154\141\163\163\040\061\040
+-\103\101\040\122\157\157\164
+-END
+-CKA_SERIAL_NUMBER MULTILINE_OCTAL
+-\002\001\001
+-END
+-CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+-CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+-CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+-CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+-
+-#
+-# Certificate "AddTrust External Root"
+-#
+-# Issuer: CN=AddTrust External CA Root,OU=AddTrust External TTP Network,O=AddTrust AB,C=SE
+-# Serial Number: 1 (0x1)
+-# Subject: CN=AddTrust External CA Root,OU=AddTrust External TTP Network,O=AddTrust AB,C=SE
+-# Not Valid Before: Tue May 30 10:48:38 2000
+-# Not Valid After : Sat May 30 10:48:38 2020
+-# Fingerprint (MD5): 1D:35:54:04:85:78:B0:3F:42:42:4D:BF:20:73:0A:3F
+-# Fingerprint (SHA1): 02:FA:F3:E2:91:43:54:68:60:78:57:69:4D:F5:E4:5B:68:85:18:68
+-CKA_CLASS CK_OBJECT_CLASS CKO_CERTIFICATE
+-CKA_TOKEN CK_BBOOL CK_TRUE
+-CKA_PRIVATE CK_BBOOL CK_FALSE
+-CKA_MODIFIABLE CK_BBOOL CK_FALSE
+-CKA_LABEL UTF8 "AddTrust External Root"
+-CKA_CERTIFICATE_TYPE CK_CERTIFICATE_TYPE CKC_X_509
+-CKA_SUBJECT MULTILINE_OCTAL
+-\060\157\061\013\060\011\006\003\125\004\006\023\002\123\105\061
+-\024\060\022\006\003\125\004\012\023\013\101\144\144\124\162\165
+-\163\164\040\101\102\061\046\060\044\006\003\125\004\013\023\035
+-\101\144\144\124\162\165\163\164\040\105\170\164\145\162\156\141
+-\154\040\124\124\120\040\116\145\164\167\157\162\153\061\042\060
+-\040\006\003\125\004\003\023\031\101\144\144\124\162\165\163\164
+-\040\105\170\164\145\162\156\141\154\040\103\101\040\122\157\157
+-\164
+-END
+-CKA_ID UTF8 "0"
+-CKA_ISSUER MULTILINE_OCTAL
+-\060\157\061\013\060\011\006\003\125\004\006\023\002\123\105\061
+-\024\060\022\006\003\125\004\012\023\013\101\144\144\124\162\165
+-\163\164\040\101\102\061\046\060\044\006\003\125\004\013\023\035
+-\101\144\144\124\162\165\163\164\040\105\170\164\145\162\156\141
+-\154\040\124\124\120\040\116\145\164\167\157\162\153\061\042\060
+-\040\006\003\125\004\003\023\031\101\144\144\124\162\165\163\164
+-\040\105\170\164\145\162\156\141\154\040\103\101\040\122\157\157
+-\164
+-END
+-CKA_SERIAL_NUMBER MULTILINE_OCTAL
+-\002\001\001
+-END
+-CKA_VALUE MULTILINE_OCTAL
+-\060\202\004\066\060\202\003\036\240\003\002\001\002\002\001\001
+-\060\015\006\011\052\206\110\206\367\015\001\001\005\005\000\060
+-\157\061\013\060\011\006\003\125\004\006\023\002\123\105\061\024
+-\060\022\006\003\125\004\012\023\013\101\144\144\124\162\165\163
+-\164\040\101\102\061\046\060\044\006\003\125\004\013\023\035\101
+-\144\144\124\162\165\163\164\040\105\170\164\145\162\156\141\154
+-\040\124\124\120\040\116\145\164\167\157\162\153\061\042\060\040
+-\006\003\125\004\003\023\031\101\144\144\124\162\165\163\164\040
+-\105\170\164\145\162\156\141\154\040\103\101\040\122\157\157\164
+-\060\036\027\015\060\060\060\065\063\060\061\060\064\070\063\070
+-\132\027\015\062\060\060\065\063\060\061\060\064\070\063\070\132
+-\060\157\061\013\060\011\006\003\125\004\006\023\002\123\105\061
+-\024\060\022\006\003\125\004\012\023\013\101\144\144\124\162\165
+-\163\164\040\101\102\061\046\060\044\006\003\125\004\013\023\035
+-\101\144\144\124\162\165\163\164\040\105\170\164\145\162\156\141
+-\154\040\124\124\120\040\116\145\164\167\157\162\153\061\042\060
+-\040\006\003\125\004\003\023\031\101\144\144\124\162\165\163\164
+-\040\105\170\164\145\162\156\141\154\040\103\101\040\122\157\157
+-\164\060\202\001\042\060\015\006\011\052\206\110\206\367\015\001
+-\001\001\005\000\003\202\001\017\000\060\202\001\012\002\202\001
+-\001\000\267\367\032\063\346\362\000\004\055\071\340\116\133\355
+-\037\274\154\017\315\265\372\043\266\316\336\233\021\063\227\244
+-\051\114\175\223\237\275\112\274\223\355\003\032\343\217\317\345
+-\155\120\132\326\227\051\224\132\200\260\111\172\333\056\225\375
+-\270\312\277\067\070\055\036\076\221\101\255\160\126\307\360\117
+-\077\350\062\236\164\312\310\220\124\351\306\137\017\170\235\232
+-\100\074\016\254\141\252\136\024\217\236\207\241\152\120\334\327
+-\232\116\257\005\263\246\161\224\234\161\263\120\140\012\307\023
+-\235\070\007\206\002\250\351\250\151\046\030\220\253\114\260\117
+-\043\253\072\117\204\330\337\316\237\341\151\157\273\327\102\327
+-\153\104\344\307\255\356\155\101\137\162\132\161\010\067\263\171
+-\145\244\131\240\224\067\367\000\057\015\302\222\162\332\320\070
+-\162\333\024\250\105\304\135\052\175\267\264\326\304\356\254\315
+-\023\104\267\311\053\335\103\000\045\372\141\271\151\152\130\043
+-\021\267\247\063\217\126\165\131\365\315\051\327\106\267\012\053
+-\145\266\323\102\157\025\262\270\173\373\357\351\135\123\325\064
+-\132\047\002\003\001\000\001\243\201\334\060\201\331\060\035\006
+-\003\125\035\016\004\026\004\024\255\275\230\172\064\264\046\367
+-\372\304\046\124\357\003\275\340\044\313\124\032\060\013\006\003
+-\125\035\017\004\004\003\002\001\006\060\017\006\003\125\035\023
+-\001\001\377\004\005\060\003\001\001\377\060\201\231\006\003\125
+-\035\043\004\201\221\060\201\216\200\024\255\275\230\172\064\264
+-\046\367\372\304\046\124\357\003\275\340\044\313\124\032\241\163
+-\244\161\060\157\061\013\060\011\006\003\125\004\006\023\002\123
+-\105\061\024\060\022\006\003\125\004\012\023\013\101\144\144\124
+-\162\165\163\164\040\101\102\061\046\060\044\006\003\125\004\013
+-\023\035\101\144\144\124\162\165\163\164\040\105\170\164\145\162
+-\156\141\154\040\124\124\120\040\116\145\164\167\157\162\153\061
+-\042\060\040\006\003\125\004\003\023\031\101\144\144\124\162\165
+-\163\164\040\105\170\164\145\162\156\141\154\040\103\101\040\122
+-\157\157\164\202\001\001\060\015\006\011\052\206\110\206\367\015
+-\001\001\005\005\000\003\202\001\001\000\260\233\340\205\045\302
+-\326\043\342\017\226\006\222\235\101\230\234\331\204\171\201\331
+-\036\133\024\007\043\066\145\217\260\330\167\273\254\101\154\107
+-\140\203\121\260\371\062\075\347\374\366\046\023\307\200\026\245
+-\277\132\374\207\317\170\171\211\041\232\342\114\007\012\206\065
+-\274\362\336\121\304\322\226\267\334\176\116\356\160\375\034\071
+-\353\014\002\121\024\055\216\275\026\340\301\337\106\165\347\044
+-\255\354\364\102\264\205\223\160\020\147\272\235\006\065\112\030
+-\323\053\172\314\121\102\241\172\143\321\346\273\241\305\053\302
+-\066\276\023\015\346\275\143\176\171\173\247\011\015\100\253\152
+-\335\217\212\303\366\366\214\032\102\005\121\324\105\365\237\247
+-\142\041\150\025\040\103\074\231\347\174\275\044\330\251\221\027
+-\163\210\077\126\033\061\070\030\264\161\017\232\315\310\016\236
+-\216\056\033\341\214\230\203\313\037\061\361\104\114\306\004\163
+-\111\166\140\017\307\370\275\027\200\153\056\351\314\114\016\132
+-\232\171\017\040\012\056\325\236\143\046\036\125\222\224\330\202
+-\027\132\173\320\274\307\217\116\206\004
+-END
+-CKA_NSS_MOZILLA_CA_POLICY CK_BBOOL CK_TRUE
+-CKA_NSS_SERVER_DISTRUST_AFTER CK_BBOOL CK_FALSE
+-CKA_NSS_EMAIL_DISTRUST_AFTER CK_BBOOL CK_FALSE
+-
+-# Trust for Certificate "AddTrust External Root"
+-# Issuer: CN=AddTrust External CA Root,OU=AddTrust External TTP Network,O=AddTrust AB,C=SE
+-# Serial Number: 1 (0x1)
+-# Subject: CN=AddTrust External CA Root,OU=AddTrust External TTP Network,O=AddTrust AB,C=SE
+-# Not Valid Before: Tue May 30 10:48:38 2000
+-# Not Valid After : Sat May 30 10:48:38 2020
+-# Fingerprint (MD5): 1D:35:54:04:85:78:B0:3F:42:42:4D:BF:20:73:0A:3F
+-# Fingerprint (SHA1): 02:FA:F3:E2:91:43:54:68:60:78:57:69:4D:F5:E4:5B:68:85:18:68
+-CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST
+-CKA_TOKEN CK_BBOOL CK_TRUE
+-CKA_PRIVATE CK_BBOOL CK_FALSE
+-CKA_MODIFIABLE CK_BBOOL CK_FALSE
+-CKA_LABEL UTF8 "AddTrust External Root"
+-CKA_CERT_SHA1_HASH MULTILINE_OCTAL
+-\002\372\363\342\221\103\124\150\140\170\127\151\115\365\344\133
+-\150\205\030\150
+-END
+-CKA_CERT_MD5_HASH MULTILINE_OCTAL
+-\035\065\124\004\205\170\260\077\102\102\115\277\040\163\012\077
+-END
+-CKA_ISSUER MULTILINE_OCTAL
+-\060\157\061\013\060\011\006\003\125\004\006\023\002\123\105\061
+-\024\060\022\006\003\125\004\012\023\013\101\144\144\124\162\165
+-\163\164\040\101\102\061\046\060\044\006\003\125\004\013\023\035
+-\101\144\144\124\162\165\163\164\040\105\170\164\145\162\156\141
+-\154\040\124\124\120\040\116\145\164\167\157\162\153\061\042\060
+-\040\006\003\125\004\003\023\031\101\144\144\124\162\165\163\164
+-\040\105\170\164\145\162\156\141\154\040\103\101\040\122\157\157
+-\164
+-END
+-CKA_SERIAL_NUMBER MULTILINE_OCTAL
+-\002\001\001
+-END
+-CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+-CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+-CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+-CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+-
+-#
+-# Certificate "Entrust Root Certification Authority"
+-#
+-# Issuer: CN=Entrust Root Certification Authority,OU="(c) 2006 Entrust, Inc.",OU=www.entrust.net/CPS is incorporated by reference,O="Entrust, Inc.",C=US
+-# Serial Number: 1164660820 (0x456b5054)
+-# Subject: CN=Entrust Root Certification Authority,OU="(c) 2006 Entrust, Inc.",OU=www.entrust.net/CPS is incorporated by reference,O="Entrust, Inc.",C=US
+-# Not Valid Before: Mon Nov 27 20:23:42 2006
+-# Not Valid After : Fri Nov 27 20:53:42 2026
+-# Fingerprint (MD5): D6:A5:C3:ED:5D:DD:3E:00:C1:3D:87:92:1F:1D:3F:E4
+-# Fingerprint (SHA1): B3:1E:B1:B7:40:E3:6C:84:02:DA:DC:37:D4:4D:F5:D4:67:49:52:F9
+-CKA_CLASS CK_OBJECT_CLASS CKO_CERTIFICATE
+-CKA_TOKEN CK_BBOOL CK_TRUE
+-CKA_PRIVATE CK_BBOOL CK_FALSE
+-CKA_MODIFIABLE CK_BBOOL CK_FALSE
+-CKA_LABEL UTF8 "Entrust Root Certification Authority"
+-CKA_CERTIFICATE_TYPE CK_CERTIFICATE_TYPE CKC_X_509
+-CKA_SUBJECT MULTILINE_OCTAL
+-\060\201\260\061\013\060\011\006\003\125\004\006\023\002\125\123
+-\061\026\060\024\006\003\125\004\012\023\015\105\156\164\162\165
+-\163\164\054\040\111\156\143\056\061\071\060\067\006\003\125\004
+-\013\023\060\167\167\167\056\145\156\164\162\165\163\164\056\156
+-\145\164\057\103\120\123\040\151\163\040\151\156\143\157\162\160
+-\157\162\141\164\145\144\040\142\171\040\162\145\146\145\162\145
+-\156\143\145\061\037\060\035\006\003\125\004\013\023\026\050\143
+-\051\040\062\060\060\066\040\105\156\164\162\165\163\164\054\040
+-\111\156\143\056\061\055\060\053\006\003\125\004\003\023\044\105
+-\156\164\162\165\163\164\040\122\157\157\164\040\103\145\162\164
+-\151\146\151\143\141\164\151\157\156\040\101\165\164\150\157\162
+-\151\164\171
+-END
+-CKA_ID UTF8 "0"
+-CKA_ISSUER MULTILINE_OCTAL
+-\060\201\260\061\013\060\011\006\003\125\004\006\023\002\125\123
+-\061\026\060\024\006\003\125\004\012\023\015\105\156\164\162\165
+-\163\164\054\040\111\156\143\056\061\071\060\067\006\003\125\004
+-\013\023\060\167\167\167\056\145\156\164\162\165\163\164\056\156
+-\145\164\057\103\120\123\040\151\163\040\151\156\143\157\162\160
+-\157\162\141\164\145\144\040\142\171\040\162\145\146\145\162\145
+-\156\143\145\061\037\060\035\006\003\125\004\013\023\026\050\143
+-\051\040\062\060\060\066\040\105\156\164\162\165\163\164\054\040
+-\111\156\143\056\061\055\060\053\006\003\125\004\003\023\044\105
+-\156\164\162\165\163\164\040\122\157\157\164\040\103\145\162\164
+-\151\146\151\143\141\164\151\157\156\040\101\165\164\150\157\162
+-\151\164\171
+-END
+-CKA_SERIAL_NUMBER MULTILINE_OCTAL
+-\002\004\105\153\120\124
++\002\004\105\153\120\124
+ END
+ CKA_VALUE MULTILINE_OCTAL
+ \060\202\004\221\060\202\003\171\240\003\002\001\002\002\004\105
+@@ -1847,7 +1269,7 @@ CKA_SERIAL_NUMBER MULTILINE_OCTAL
+ \002\003\002\064\126
+ END
+ CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+-CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
++CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+ 
+@@ -2012,7 +1434,7 @@ CKA_SERIAL_NUMBER MULTILINE_OCTAL
+ \002\001\001
+ END
+ CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+-CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
++CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+ 
+@@ -2177,7 +1599,7 @@ CKA_SERIAL_NUMBER MULTILINE_OCTAL
+ \002\001\001
+ END
+ CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+-CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
++CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+ 
+@@ -4178,7 +3600,7 @@ CKA_SERIAL_NUMBER MULTILINE_OCTAL
+ \136\366
+ END
+ CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+-CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
++CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+ 
+@@ -5727,7 +5149,7 @@ CKA_SERIAL_NUMBER MULTILINE_OCTAL
+ \073\112
+ END
+ CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+-CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
++CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+ 
+@@ -7304,7 +6726,7 @@ CKA_SERIAL_NUMBER MULTILINE_OCTAL
+ \017\037
+ END
+ CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+-CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
++CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+ 
+@@ -7744,7 +7166,7 @@ CKA_SERIAL_NUMBER MULTILINE_OCTAL
+ \303\153
+ END
+ CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+-CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
++CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+ 
+@@ -8082,7 +7504,7 @@ CKA_SERIAL_NUMBER MULTILINE_OCTAL
+ \254\263
+ END
+ CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+-CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
++CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+ 
+@@ -8245,177 +7667,6 @@ CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+ CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+ 
+-#
+-# Certificate "Staat der Nederlanden Root CA - G2"
+-#
+-# Issuer: CN=Staat der Nederlanden Root CA - G2,O=Staat der Nederlanden,C=NL
+-# Serial Number: 10000012 (0x98968c)
+-# Subject: CN=Staat der Nederlanden Root CA - G2,O=Staat der Nederlanden,C=NL
+-# Not Valid Before: Wed Mar 26 11:18:17 2008
+-# Not Valid After : Wed Mar 25 11:03:10 2020
+-# Fingerprint (MD5): 7C:A5:0F:F8:5B:9A:7D:6D:30:AE:54:5A:E3:42:A2:8A
+-# Fingerprint (SHA1): 59:AF:82:79:91:86:C7:B4:75:07:CB:CF:03:57:46:EB:04:DD:B7:16
+-CKA_CLASS CK_OBJECT_CLASS CKO_CERTIFICATE
+-CKA_TOKEN CK_BBOOL CK_TRUE
+-CKA_PRIVATE CK_BBOOL CK_FALSE
+-CKA_MODIFIABLE CK_BBOOL CK_FALSE
+-CKA_LABEL UTF8 "Staat der Nederlanden Root CA - G2"
+-CKA_CERTIFICATE_TYPE CK_CERTIFICATE_TYPE CKC_X_509
+-CKA_SUBJECT MULTILINE_OCTAL
+-\060\132\061\013\060\011\006\003\125\004\006\023\002\116\114\061
+-\036\060\034\006\003\125\004\012\014\025\123\164\141\141\164\040
+-\144\145\162\040\116\145\144\145\162\154\141\156\144\145\156\061
+-\053\060\051\006\003\125\004\003\014\042\123\164\141\141\164\040
+-\144\145\162\040\116\145\144\145\162\154\141\156\144\145\156\040
+-\122\157\157\164\040\103\101\040\055\040\107\062
+-END
+-CKA_ID UTF8 "0"
+-CKA_ISSUER MULTILINE_OCTAL
+-\060\132\061\013\060\011\006\003\125\004\006\023\002\116\114\061
+-\036\060\034\006\003\125\004\012\014\025\123\164\141\141\164\040
+-\144\145\162\040\116\145\144\145\162\154\141\156\144\145\156\061
+-\053\060\051\006\003\125\004\003\014\042\123\164\141\141\164\040
+-\144\145\162\040\116\145\144\145\162\154\141\156\144\145\156\040
+-\122\157\157\164\040\103\101\040\055\040\107\062
+-END
+-CKA_SERIAL_NUMBER MULTILINE_OCTAL
+-\002\004\000\230\226\214
+-END
+-CKA_VALUE MULTILINE_OCTAL
+-\060\202\005\312\060\202\003\262\240\003\002\001\002\002\004\000
+-\230\226\214\060\015\006\011\052\206\110\206\367\015\001\001\013
+-\005\000\060\132\061\013\060\011\006\003\125\004\006\023\002\116
+-\114\061\036\060\034\006\003\125\004\012\014\025\123\164\141\141
+-\164\040\144\145\162\040\116\145\144\145\162\154\141\156\144\145
+-\156\061\053\060\051\006\003\125\004\003\014\042\123\164\141\141
+-\164\040\144\145\162\040\116\145\144\145\162\154\141\156\144\145
+-\156\040\122\157\157\164\040\103\101\040\055\040\107\062\060\036
+-\027\015\060\070\060\063\062\066\061\061\061\070\061\067\132\027
+-\015\062\060\060\063\062\065\061\061\060\063\061\060\132\060\132
+-\061\013\060\011\006\003\125\004\006\023\002\116\114\061\036\060
+-\034\006\003\125\004\012\014\025\123\164\141\141\164\040\144\145
+-\162\040\116\145\144\145\162\154\141\156\144\145\156\061\053\060
+-\051\006\003\125\004\003\014\042\123\164\141\141\164\040\144\145
+-\162\040\116\145\144\145\162\154\141\156\144\145\156\040\122\157
+-\157\164\040\103\101\040\055\040\107\062\060\202\002\042\060\015
+-\006\011\052\206\110\206\367\015\001\001\001\005\000\003\202\002
+-\017\000\060\202\002\012\002\202\002\001\000\305\131\347\157\165
+-\252\076\113\234\265\270\254\236\013\344\371\331\312\253\135\217
+-\265\071\020\202\327\257\121\340\073\341\000\110\152\317\332\341
+-\006\103\021\231\252\024\045\022\255\042\350\000\155\103\304\251
+-\270\345\037\211\113\147\275\141\110\357\375\322\340\140\210\345
+-\271\030\140\050\303\167\053\255\260\067\252\067\336\144\131\052
+-\106\127\344\113\271\370\067\174\325\066\347\200\301\266\363\324
+-\147\233\226\350\316\327\306\012\123\320\153\111\226\363\243\013
+-\005\167\110\367\045\345\160\254\060\024\040\045\343\177\165\132
+-\345\110\370\116\173\003\007\004\372\202\141\207\156\360\073\304
+-\244\307\320\365\164\076\245\135\032\010\362\233\045\322\366\254
+-\004\046\076\125\072\142\050\245\173\262\060\257\370\067\302\321
+-\272\326\070\375\364\357\111\060\067\231\046\041\110\205\001\251
+-\345\026\347\334\220\125\337\017\350\070\315\231\067\041\117\135
+-\365\042\157\152\305\022\026\140\027\125\362\145\146\246\247\060
+-\221\070\301\070\035\206\004\204\272\032\045\170\136\235\257\314
+-\120\140\326\023\207\122\355\143\037\155\145\175\302\025\030\164
+-\312\341\176\144\051\214\162\330\026\023\175\013\111\112\361\050
+-\033\040\164\153\305\075\335\260\252\110\011\075\056\202\224\315
+-\032\145\331\053\210\232\231\274\030\176\237\356\175\146\174\076
+-\275\224\270\201\316\315\230\060\170\301\157\147\320\276\137\340
+-\150\355\336\342\261\311\054\131\170\222\252\337\053\140\143\362
+-\345\136\271\343\312\372\177\120\206\076\242\064\030\014\011\150
+-\050\021\034\344\341\271\134\076\107\272\062\077\030\314\133\204
+-\365\363\153\164\304\162\164\341\343\213\240\112\275\215\146\057
+-\352\255\065\332\040\323\210\202\141\360\022\042\266\274\320\325
+-\244\354\257\124\210\045\044\074\247\155\261\162\051\077\076\127
+-\246\177\125\257\156\046\306\376\347\314\100\134\121\104\201\012
+-\170\336\112\316\125\277\035\325\331\267\126\357\360\166\377\013
+-\171\265\257\275\373\251\151\221\106\227\150\200\024\066\035\263
+-\177\273\051\230\066\245\040\372\202\140\142\063\244\354\326\272
+-\007\247\156\305\317\024\246\347\326\222\064\330\201\365\374\035
+-\135\252\134\036\366\243\115\073\270\367\071\002\003\001\000\001
+-\243\201\227\060\201\224\060\017\006\003\125\035\023\001\001\377
+-\004\005\060\003\001\001\377\060\122\006\003\125\035\040\004\113
+-\060\111\060\107\006\004\125\035\040\000\060\077\060\075\006\010
+-\053\006\001\005\005\007\002\001\026\061\150\164\164\160\072\057
+-\057\167\167\167\056\160\153\151\157\166\145\162\150\145\151\144
+-\056\156\154\057\160\157\154\151\143\151\145\163\057\162\157\157
+-\164\055\160\157\154\151\143\171\055\107\062\060\016\006\003\125
+-\035\017\001\001\377\004\004\003\002\001\006\060\035\006\003\125
+-\035\016\004\026\004\024\221\150\062\207\025\035\211\342\265\361
+-\254\066\050\064\215\013\174\142\210\353\060\015\006\011\052\206
+-\110\206\367\015\001\001\013\005\000\003\202\002\001\000\250\101
+-\112\147\052\222\201\202\120\156\341\327\330\263\071\073\363\002
+-\025\011\120\121\357\055\275\044\173\210\206\073\371\264\274\222
+-\011\226\271\366\300\253\043\140\006\171\214\021\116\121\322\171
+-\200\063\373\235\110\276\354\101\103\201\037\176\107\100\034\345
+-\172\010\312\252\213\165\255\024\304\302\350\146\074\202\007\247
+-\346\047\202\133\030\346\017\156\331\120\076\212\102\030\051\306
+-\264\126\374\126\020\240\005\027\275\014\043\177\364\223\355\234
+-\032\121\276\335\105\101\277\221\044\264\037\214\351\137\317\173
+-\041\231\237\225\237\071\072\106\034\154\371\315\173\234\220\315
+-\050\251\307\251\125\273\254\142\064\142\065\023\113\024\072\125
+-\203\271\206\215\222\246\306\364\007\045\124\314\026\127\022\112
+-\202\170\310\024\331\027\202\046\055\135\040\037\171\256\376\324
+-\160\026\026\225\203\330\065\071\377\122\135\165\034\026\305\023
+-\125\317\107\314\165\145\122\112\336\360\260\247\344\012\226\013
+-\373\255\302\342\045\204\262\335\344\275\176\131\154\233\360\360
+-\330\347\312\362\351\227\070\176\211\276\314\373\071\027\141\077
+-\162\333\072\221\330\145\001\031\035\255\120\244\127\012\174\113
+-\274\234\161\163\052\105\121\031\205\314\216\375\107\247\164\225
+-\035\250\321\257\116\027\261\151\046\302\252\170\127\133\305\115
+-\247\345\236\005\027\224\312\262\137\240\111\030\215\064\351\046
+-\154\110\036\252\150\222\005\341\202\163\132\233\334\007\133\010
+-\155\175\235\327\215\041\331\374\024\040\252\302\105\337\077\347
+-\000\262\121\344\302\370\005\271\171\032\214\064\363\236\133\344
+-\067\133\153\112\337\054\127\212\100\132\066\272\335\165\104\010
+-\067\102\160\014\376\334\136\041\240\243\212\300\220\234\150\332
+-\120\346\105\020\107\170\266\116\322\145\311\303\067\337\341\102
+-\143\260\127\067\105\055\173\212\234\277\005\352\145\125\063\367
+-\071\020\305\050\052\041\172\033\212\304\044\371\077\025\310\232
+-\025\040\365\125\142\226\355\155\223\120\274\344\252\170\255\331
+-\313\012\145\207\246\146\301\304\201\243\167\072\130\036\013\356
+-\203\213\235\036\322\122\244\314\035\157\260\230\155\224\061\265
+-\370\161\012\334\271\374\175\062\140\346\353\257\212\001
+-END
+-CKA_NSS_MOZILLA_CA_POLICY CK_BBOOL CK_TRUE
+-CKA_NSS_SERVER_DISTRUST_AFTER CK_BBOOL CK_FALSE
+-CKA_NSS_EMAIL_DISTRUST_AFTER CK_BBOOL CK_FALSE
+-
+-# Trust for Certificate "Staat der Nederlanden Root CA - G2"
+-# Issuer: CN=Staat der Nederlanden Root CA - G2,O=Staat der Nederlanden,C=NL
+-# Serial Number: 10000012 (0x98968c)
+-# Subject: CN=Staat der Nederlanden Root CA - G2,O=Staat der Nederlanden,C=NL
+-# Not Valid Before: Wed Mar 26 11:18:17 2008
+-# Not Valid After : Wed Mar 25 11:03:10 2020
+-# Fingerprint (MD5): 7C:A5:0F:F8:5B:9A:7D:6D:30:AE:54:5A:E3:42:A2:8A
+-# Fingerprint (SHA1): 59:AF:82:79:91:86:C7:B4:75:07:CB:CF:03:57:46:EB:04:DD:B7:16
+-CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST
+-CKA_TOKEN CK_BBOOL CK_TRUE
+-CKA_PRIVATE CK_BBOOL CK_FALSE
+-CKA_MODIFIABLE CK_BBOOL CK_FALSE
+-CKA_LABEL UTF8 "Staat der Nederlanden Root CA - G2"
+-CKA_CERT_SHA1_HASH MULTILINE_OCTAL
+-\131\257\202\171\221\206\307\264\165\007\313\317\003\127\106\353
+-\004\335\267\026
+-END
+-CKA_CERT_MD5_HASH MULTILINE_OCTAL
+-\174\245\017\370\133\232\175\155\060\256\124\132\343\102\242\212
+-END
+-CKA_ISSUER MULTILINE_OCTAL
+-\060\132\061\013\060\011\006\003\125\004\006\023\002\116\114\061
+-\036\060\034\006\003\125\004\012\014\025\123\164\141\141\164\040
+-\144\145\162\040\116\145\144\145\162\154\141\156\144\145\156\061
+-\053\060\051\006\003\125\004\003\014\042\123\164\141\141\164\040
+-\144\145\162\040\116\145\144\145\162\154\141\156\144\145\156\040
+-\122\157\157\164\040\103\101\040\055\040\107\062
+-END
+-CKA_SERIAL_NUMBER MULTILINE_OCTAL
+-\002\004\000\230\226\214
+-END
+-CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+-CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+-CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+-CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+-
+ #
+ # Certificate "Hongkong Post Root CA 1"
+ #
+@@ -19007,176 +18258,6 @@ CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+ CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+ 
+-#
+-# Certificate "LuxTrust Global Root 2"
+-#
+-# Issuer: CN=LuxTrust Global Root 2,O=LuxTrust S.A.,C=LU
+-# Serial Number:0a:7e:a6:df:4b:44:9e:da:6a:24:85:9e:e6:b8:15:d3:16:7f:bb:b1
+-# Subject: CN=LuxTrust Global Root 2,O=LuxTrust S.A.,C=LU
+-# Not Valid Before: Thu Mar 05 13:21:57 2015
+-# Not Valid After : Mon Mar 05 13:21:57 2035
+-# Fingerprint (SHA-256): 54:45:5F:71:29:C2:0B:14:47:C4:18:F9:97:16:8F:24:C5:8F:C5:02:3B:F5:DA:5B:E2:EB:6E:1D:D8:90:2E:D5
+-# Fingerprint (SHA1): 1E:0E:56:19:0A:D1:8B:25:98:B2:04:44:FF:66:8A:04:17:99:5F:3F
+-CKA_CLASS CK_OBJECT_CLASS CKO_CERTIFICATE
+-CKA_TOKEN CK_BBOOL CK_TRUE
+-CKA_PRIVATE CK_BBOOL CK_FALSE
+-CKA_MODIFIABLE CK_BBOOL CK_FALSE
+-CKA_LABEL UTF8 "LuxTrust Global Root 2"
+-CKA_CERTIFICATE_TYPE CK_CERTIFICATE_TYPE CKC_X_509
+-CKA_SUBJECT MULTILINE_OCTAL
+-\060\106\061\013\060\011\006\003\125\004\006\023\002\114\125\061
+-\026\060\024\006\003\125\004\012\014\015\114\165\170\124\162\165
+-\163\164\040\123\056\101\056\061\037\060\035\006\003\125\004\003
+-\014\026\114\165\170\124\162\165\163\164\040\107\154\157\142\141
+-\154\040\122\157\157\164\040\062
+-END
+-CKA_ID UTF8 "0"
+-CKA_ISSUER MULTILINE_OCTAL
+-\060\106\061\013\060\011\006\003\125\004\006\023\002\114\125\061
+-\026\060\024\006\003\125\004\012\014\015\114\165\170\124\162\165
+-\163\164\040\123\056\101\056\061\037\060\035\006\003\125\004\003
+-\014\026\114\165\170\124\162\165\163\164\040\107\154\157\142\141
+-\154\040\122\157\157\164\040\062
+-END
+-CKA_SERIAL_NUMBER MULTILINE_OCTAL
+-\002\024\012\176\246\337\113\104\236\332\152\044\205\236\346\270
+-\025\323\026\177\273\261
+-END
+-CKA_VALUE MULTILINE_OCTAL
+-\060\202\005\303\060\202\003\253\240\003\002\001\002\002\024\012
+-\176\246\337\113\104\236\332\152\044\205\236\346\270\025\323\026
+-\177\273\261\060\015\006\011\052\206\110\206\367\015\001\001\013
+-\005\000\060\106\061\013\060\011\006\003\125\004\006\023\002\114
+-\125\061\026\060\024\006\003\125\004\012\014\015\114\165\170\124
+-\162\165\163\164\040\123\056\101\056\061\037\060\035\006\003\125
+-\004\003\014\026\114\165\170\124\162\165\163\164\040\107\154\157
+-\142\141\154\040\122\157\157\164\040\062\060\036\027\015\061\065
+-\060\063\060\065\061\063\062\061\065\067\132\027\015\063\065\060
+-\063\060\065\061\063\062\061\065\067\132\060\106\061\013\060\011
+-\006\003\125\004\006\023\002\114\125\061\026\060\024\006\003\125
+-\004\012\014\015\114\165\170\124\162\165\163\164\040\123\056\101
+-\056\061\037\060\035\006\003\125\004\003\014\026\114\165\170\124
+-\162\165\163\164\040\107\154\157\142\141\154\040\122\157\157\164
+-\040\062\060\202\002\042\060\015\006\011\052\206\110\206\367\015
+-\001\001\001\005\000\003\202\002\017\000\060\202\002\012\002\202
+-\002\001\000\327\205\227\277\021\230\351\360\142\203\114\074\207
+-\371\123\152\067\013\362\017\074\207\316\157\334\046\051\275\305
+-\211\272\311\203\075\367\356\312\133\306\155\111\163\264\311\106
+-\243\033\064\023\077\301\211\105\127\364\331\261\373\066\145\113
+-\373\010\342\110\161\021\310\156\073\236\235\337\211\145\067\246
+-\205\366\073\104\030\266\306\067\060\142\104\222\227\151\175\102
+-\060\044\344\015\014\211\153\143\336\305\341\337\116\251\024\154
+-\123\340\141\316\366\027\057\035\074\275\346\042\114\035\223\365
+-\020\304\241\166\354\152\336\305\154\337\226\264\126\100\102\300
+-\142\222\060\241\055\025\224\240\322\040\006\011\156\152\155\345
+-\353\267\276\324\360\361\025\174\213\346\116\272\023\314\113\047
+-\136\231\074\027\135\217\201\177\063\075\117\323\077\033\354\134
+-\077\360\074\114\165\156\362\246\325\235\332\055\007\143\002\306
+-\162\351\224\274\114\111\225\117\210\122\310\333\350\151\202\370
+-\314\064\133\042\360\206\247\211\275\110\012\155\146\201\155\310
+-\310\144\373\001\341\364\341\336\331\236\335\333\133\324\052\231
+-\046\025\033\036\114\222\051\202\236\325\222\201\222\101\160\031
+-\367\244\345\223\113\274\167\147\061\335\034\375\061\160\015\027
+-\231\014\371\014\071\031\052\027\265\060\161\125\325\017\256\130
+-\341\075\057\064\233\317\237\366\170\205\302\223\172\162\076\146
+-\217\234\026\021\140\217\236\211\157\147\276\340\107\132\073\014
+-\232\147\213\317\106\306\256\070\243\362\247\274\346\326\205\153
+-\063\044\160\042\113\313\010\233\273\310\370\002\051\035\276\040
+-\014\106\277\153\207\233\263\052\146\102\065\106\154\252\272\255
+-\371\230\173\351\120\125\024\061\277\261\332\055\355\200\255\150
+-\044\373\151\253\330\161\023\060\346\147\263\207\100\375\211\176
+-\362\103\321\021\337\057\145\057\144\316\137\024\271\261\277\061
+-\275\207\170\132\131\145\210\252\374\131\062\110\206\326\114\271
+-\051\113\225\323\166\363\167\045\155\102\034\070\203\115\375\243
+-\137\233\177\055\254\171\033\016\102\061\227\143\244\373\212\151
+-\325\042\015\064\220\060\056\250\264\340\155\266\224\254\274\213
+-\116\327\160\374\305\070\216\144\045\341\115\071\220\316\311\207
+-\204\130\161\002\003\001\000\001\243\201\250\060\201\245\060\017
+-\006\003\125\035\023\001\001\377\004\005\060\003\001\001\377\060
+-\102\006\003\125\035\040\004\073\060\071\060\067\006\007\053\201
+-\053\001\001\001\012\060\054\060\052\006\010\053\006\001\005\005
+-\007\002\001\026\036\150\164\164\160\163\072\057\057\162\145\160
+-\157\163\151\164\157\162\171\056\154\165\170\164\162\165\163\164
+-\056\154\165\060\016\006\003\125\035\017\001\001\377\004\004\003
+-\002\001\006\060\037\006\003\125\035\043\004\030\060\026\200\024
+-\377\030\050\166\371\110\005\054\241\256\361\053\033\053\262\123
+-\370\113\174\263\060\035\006\003\125\035\016\004\026\004\024\377
+-\030\050\166\371\110\005\054\241\256\361\053\033\053\262\123\370
+-\113\174\263\060\015\006\011\052\206\110\206\367\015\001\001\013
+-\005\000\003\202\002\001\000\152\031\024\355\156\171\301\054\207
+-\324\015\160\176\327\366\170\311\013\004\116\304\261\316\223\160
+-\376\260\124\300\062\315\231\060\144\027\277\017\345\342\063\375
+-\007\066\100\162\016\032\266\152\131\326\000\345\150\040\335\056
+-\162\015\037\152\144\061\040\204\175\111\246\132\067\353\105\311
+-\205\365\324\307\027\231\007\346\233\125\344\014\350\251\264\316
+-\214\133\265\021\134\317\212\016\015\326\254\167\201\376\062\234
+-\044\236\162\316\124\363\320\157\242\126\326\354\303\067\054\145
+-\130\276\127\000\032\362\065\372\353\173\061\135\302\301\022\075
+-\226\201\210\226\211\301\131\134\172\346\177\160\064\347\203\342
+-\261\341\341\270\130\357\324\225\344\140\234\360\226\227\162\214
+-\353\204\002\056\145\217\244\267\322\177\147\335\310\323\236\134
+-\252\251\244\240\045\024\006\233\354\117\176\055\013\177\035\165
+-\361\063\330\355\316\270\165\155\076\133\271\230\035\061\015\126
+-\330\103\017\060\221\262\004\153\335\126\276\225\200\125\147\276
+-\330\315\203\331\030\356\056\017\206\055\222\236\160\023\354\336
+-\121\311\103\170\002\245\115\310\371\137\304\221\130\106\026\167
+-\132\164\252\100\274\007\237\060\271\261\367\022\027\335\343\377
+-\044\100\035\172\152\321\117\030\012\252\220\035\353\100\036\337
+-\241\036\104\222\020\232\362\215\341\321\113\106\236\350\105\102
+-\227\352\105\231\363\354\146\325\002\372\362\246\112\044\252\336
+-\316\271\312\371\077\223\157\371\243\272\352\245\076\231\255\375
+-\377\173\231\365\145\356\360\131\050\147\327\220\225\244\023\204
+-\251\204\301\350\316\316\165\223\143\032\274\074\352\325\144\037
+-\055\052\022\071\306\303\132\062\355\107\221\026\016\274\070\301
+-\120\336\217\312\052\220\064\034\356\101\224\234\136\031\056\370
+-\105\111\231\164\221\260\004\157\343\004\132\261\253\052\253\376
+-\307\320\226\266\332\341\112\144\006\156\140\115\275\102\116\377
+-\170\332\044\312\033\264\327\226\071\154\256\361\016\252\247\175
+-\110\213\040\114\317\144\326\270\227\106\260\116\321\052\126\072
+-\240\223\275\257\200\044\340\012\176\347\312\325\312\350\205\125
+-\334\066\052\341\224\150\223\307\146\162\104\017\200\041\062\154
+-\045\307\043\200\203\012\353
+-END
+-CKA_NSS_MOZILLA_CA_POLICY CK_BBOOL CK_TRUE
+-CKA_NSS_SERVER_DISTRUST_AFTER CK_BBOOL CK_FALSE
+-CKA_NSS_EMAIL_DISTRUST_AFTER CK_BBOOL CK_FALSE
+-
+-# Trust for "LuxTrust Global Root 2"
+-# Issuer: CN=LuxTrust Global Root 2,O=LuxTrust S.A.,C=LU
+-# Serial Number:0a:7e:a6:df:4b:44:9e:da:6a:24:85:9e:e6:b8:15:d3:16:7f:bb:b1
+-# Subject: CN=LuxTrust Global Root 2,O=LuxTrust S.A.,C=LU
+-# Not Valid Before: Thu Mar 05 13:21:57 2015
+-# Not Valid After : Mon Mar 05 13:21:57 2035
+-# Fingerprint (SHA-256): 54:45:5F:71:29:C2:0B:14:47:C4:18:F9:97:16:8F:24:C5:8F:C5:02:3B:F5:DA:5B:E2:EB:6E:1D:D8:90:2E:D5
+-# Fingerprint (SHA1): 1E:0E:56:19:0A:D1:8B:25:98:B2:04:44:FF:66:8A:04:17:99:5F:3F
+-CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST
+-CKA_TOKEN CK_BBOOL CK_TRUE
+-CKA_PRIVATE CK_BBOOL CK_FALSE
+-CKA_MODIFIABLE CK_BBOOL CK_FALSE
+-CKA_LABEL UTF8 "LuxTrust Global Root 2"
+-CKA_CERT_SHA1_HASH MULTILINE_OCTAL
+-\036\016\126\031\012\321\213\045\230\262\004\104\377\146\212\004
+-\027\231\137\077
+-END
+-CKA_CERT_MD5_HASH MULTILINE_OCTAL
+-\262\341\011\000\141\257\367\361\221\157\304\255\215\136\073\174
+-END
+-CKA_ISSUER MULTILINE_OCTAL
+-\060\106\061\013\060\011\006\003\125\004\006\023\002\114\125\061
+-\026\060\024\006\003\125\004\012\014\015\114\165\170\124\162\165
+-\163\164\040\123\056\101\056\061\037\060\035\006\003\125\004\003
+-\014\026\114\165\170\124\162\165\163\164\040\107\154\157\142\141
+-\154\040\122\157\157\164\040\062
+-END
+-CKA_SERIAL_NUMBER MULTILINE_OCTAL
+-\002\024\012\176\246\337\113\104\236\332\152\044\205\236\346\270
+-\025\323\026\177\273\261
+-END
+-CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+-CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+-CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+-CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+-
+ #
+ # Certificate "Symantec Class 1 Public Primary Certification Authority - G6"
+ #
+@@ -19380,363 +18461,93 @@ CKA_SERIAL_NUMBER MULTILINE_OCTAL
+ END
+ CKA_VALUE MULTILINE_OCTAL
+ \060\202\003\366\060\202\002\336\240\003\002\001\002\002\020\144
+-\202\236\374\067\036\164\135\374\227\377\227\310\261\377\101\060
+-\015\006\011\052\206\110\206\367\015\001\001\013\005\000\060\201
+-\224\061\013\060\011\006\003\125\004\006\023\002\125\123\061\035
+-\060\033\006\003\125\004\012\023\024\123\171\155\141\156\164\145
+-\143\040\103\157\162\160\157\162\141\164\151\157\156\061\037\060
+-\035\006\003\125\004\013\023\026\123\171\155\141\156\164\145\143
+-\040\124\162\165\163\164\040\116\145\164\167\157\162\153\061\105
+-\060\103\006\003\125\004\003\023\074\123\171\155\141\156\164\145
+-\143\040\103\154\141\163\163\040\062\040\120\165\142\154\151\143
+-\040\120\162\151\155\141\162\171\040\103\145\162\164\151\146\151
+-\143\141\164\151\157\156\040\101\165\164\150\157\162\151\164\171
+-\040\055\040\107\066\060\036\027\015\061\061\061\060\061\070\060
+-\060\060\060\060\060\132\027\015\063\067\061\062\060\061\062\063
+-\065\071\065\071\132\060\201\224\061\013\060\011\006\003\125\004
+-\006\023\002\125\123\061\035\060\033\006\003\125\004\012\023\024
+-\123\171\155\141\156\164\145\143\040\103\157\162\160\157\162\141
+-\164\151\157\156\061\037\060\035\006\003\125\004\013\023\026\123
+-\171\155\141\156\164\145\143\040\124\162\165\163\164\040\116\145
+-\164\167\157\162\153\061\105\060\103\006\003\125\004\003\023\074
+-\123\171\155\141\156\164\145\143\040\103\154\141\163\163\040\062
+-\040\120\165\142\154\151\143\040\120\162\151\155\141\162\171\040
+-\103\145\162\164\151\146\151\143\141\164\151\157\156\040\101\165
+-\164\150\157\162\151\164\171\040\055\040\107\066\060\202\001\042
+-\060\015\006\011\052\206\110\206\367\015\001\001\001\005\000\003
+-\202\001\017\000\060\202\001\012\002\202\001\001\000\315\314\351
+-\005\310\143\205\313\077\100\143\027\275\030\372\065\346\004\147
+-\127\145\230\051\244\117\311\134\217\017\064\322\370\332\250\023
+-\142\252\270\036\120\147\170\260\026\114\240\071\251\025\172\256
+-\355\322\242\300\360\220\067\051\030\046\134\350\015\074\266\154
+-\111\077\301\340\334\331\113\266\024\031\013\246\323\226\341\326
+-\011\343\031\046\034\371\037\145\113\371\032\103\034\000\203\326
+-\320\252\111\242\324\333\346\142\070\272\120\024\103\155\371\061
+-\370\126\026\331\070\002\221\317\353\154\335\273\071\116\231\341
+-\060\147\105\361\324\360\215\303\337\376\362\070\007\041\175\000
+-\136\126\104\263\344\140\275\221\053\234\253\133\004\162\017\262
+-\050\331\162\253\005\040\102\045\251\133\003\152\040\020\314\061
+-\360\053\332\065\054\320\373\232\227\116\360\202\113\053\330\137
+-\066\243\013\055\257\143\015\035\045\177\241\156\134\142\241\215
+-\050\076\241\374\034\040\370\001\057\272\125\232\021\260\031\322
+-\310\120\171\153\016\152\005\327\252\004\066\262\243\362\341\137
+-\167\247\167\234\345\036\334\351\337\152\301\145\135\002\003\001
+-\000\001\243\102\060\100\060\016\006\003\125\035\017\001\001\377
+-\004\004\003\002\001\006\060\017\006\003\125\035\023\001\001\377
+-\004\005\060\003\001\001\377\060\035\006\003\125\035\016\004\026
+-\004\024\207\214\040\225\310\230\112\321\326\200\006\112\220\064
+-\104\337\034\115\277\260\060\015\006\011\052\206\110\206\367\015
+-\001\001\013\005\000\003\202\001\001\000\201\216\262\245\146\226
+-\267\041\245\266\357\157\043\132\137\333\201\305\102\245\170\301
+-\151\375\364\074\327\371\134\153\160\162\032\374\132\227\115\000
+-\200\210\210\202\212\303\161\015\216\305\211\233\054\355\215\013
+-\322\162\124\365\175\324\134\103\127\351\363\256\245\002\021\366
+-\166\053\201\127\335\175\332\164\060\375\124\107\366\340\026\156
+-\246\264\012\110\346\347\165\007\017\051\031\071\316\171\364\266
+-\154\305\137\231\325\037\113\372\337\155\054\074\015\124\200\160
+-\360\210\013\200\317\306\150\242\270\035\160\331\166\214\374\356
+-\245\311\317\255\035\317\231\045\127\132\142\105\313\026\153\275
+-\111\315\245\243\214\151\171\045\256\270\114\154\213\100\146\113
+-\026\077\317\002\032\335\341\154\153\007\141\152\166\025\051\231
+-\177\033\335\210\200\301\277\265\217\163\305\246\226\043\204\246
+-\050\206\044\063\152\001\056\127\163\045\266\136\277\217\346\035
+-\141\250\100\051\147\035\207\233\035\177\233\237\231\315\061\326
+-\124\276\142\273\071\254\150\022\110\221\040\245\313\261\335\376
+-\157\374\132\344\202\125\131\257\061\251
+-END
+-CKA_NSS_MOZILLA_CA_POLICY CK_BBOOL CK_TRUE
+-CKA_NSS_SERVER_DISTRUST_AFTER CK_BBOOL CK_FALSE
+-CKA_NSS_EMAIL_DISTRUST_AFTER CK_BBOOL CK_FALSE
+-
+-# Trust for "Symantec Class 2 Public Primary Certification Authority - G6"
+-# Issuer: CN=Symantec Class 2 Public Primary Certification Authority - G6,OU=Symantec Trust Network,O=Symantec Corporation,C=US
+-# Serial Number:64:82:9e:fc:37:1e:74:5d:fc:97:ff:97:c8:b1:ff:41
+-# Subject: CN=Symantec Class 2 Public Primary Certification Authority - G6,OU=Symantec Trust Network,O=Symantec Corporation,C=US
+-# Not Valid Before: Tue Oct 18 00:00:00 2011
+-# Not Valid After : Tue Dec 01 23:59:59 2037
+-# Fingerprint (SHA-256): CB:62:7D:18:B5:8A:D5:6D:DE:33:1A:30:45:6B:C6:5C:60:1A:4E:9B:18:DE:DC:EA:08:E7:DA:AA:07:81:5F:F0
+-# Fingerprint (SHA1): 40:B3:31:A0:E9:BF:E8:55:BC:39:93:CA:70:4F:4E:C2:51:D4:1D:8F
+-CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST
+-CKA_TOKEN CK_BBOOL CK_TRUE
+-CKA_PRIVATE CK_BBOOL CK_FALSE
+-CKA_MODIFIABLE CK_BBOOL CK_FALSE
+-CKA_LABEL UTF8 "Symantec Class 2 Public Primary Certification Authority - G6"
+-CKA_CERT_SHA1_HASH MULTILINE_OCTAL
+-\100\263\061\240\351\277\350\125\274\071\223\312\160\117\116\302
+-\121\324\035\217
+-END
+-CKA_CERT_MD5_HASH MULTILINE_OCTAL
+-\175\013\203\345\373\174\255\007\117\040\251\265\337\143\355\171
+-END
+-CKA_ISSUER MULTILINE_OCTAL
+-\060\201\224\061\013\060\011\006\003\125\004\006\023\002\125\123
+-\061\035\060\033\006\003\125\004\012\023\024\123\171\155\141\156
+-\164\145\143\040\103\157\162\160\157\162\141\164\151\157\156\061
+-\037\060\035\006\003\125\004\013\023\026\123\171\155\141\156\164
+-\145\143\040\124\162\165\163\164\040\116\145\164\167\157\162\153
+-\061\105\060\103\006\003\125\004\003\023\074\123\171\155\141\156
+-\164\145\143\040\103\154\141\163\163\040\062\040\120\165\142\154
+-\151\143\040\120\162\151\155\141\162\171\040\103\145\162\164\151
+-\146\151\143\141\164\151\157\156\040\101\165\164\150\157\162\151
+-\164\171\040\055\040\107\066
+-END
+-CKA_SERIAL_NUMBER MULTILINE_OCTAL
+-\002\020\144\202\236\374\067\036\164\135\374\227\377\227\310\261
+-\377\101
+-END
+-CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+-CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+-CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+-CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+-
+-#
+-# Certificate "Symantec Class 1 Public Primary Certification Authority - G4"
+-#
+-# Issuer: CN=Symantec Class 1 Public Primary Certification Authority - G4,OU=Symantec Trust Network,O=Symantec Corporation,C=US
+-# Serial Number:21:6e:33:a5:cb:d3:88:a4:6f:29:07:b4:27:3c:c4:d8
+-# Subject: CN=Symantec Class 1 Public Primary Certification Authority - G4,OU=Symantec Trust Network,O=Symantec Corporation,C=US
+-# Not Valid Before: Wed Oct 05 00:00:00 2011
+-# Not Valid After : Mon Jan 18 23:59:59 2038
+-# Fingerprint (SHA-256): 36:3F:3C:84:9E:AB:03:B0:A2:A0:F6:36:D7:B8:6D:04:D3:AC:7F:CF:E2:6A:0A:91:21:AB:97:95:F6:E1:76:DF
+-# Fingerprint (SHA1): 84:F2:E3:DD:83:13:3E:A9:1D:19:52:7F:02:D7:29:BF:C1:5F:E6:67
+-CKA_CLASS CK_OBJECT_CLASS CKO_CERTIFICATE
+-CKA_TOKEN CK_BBOOL CK_TRUE
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+-CKA_LABEL UTF8 "Symantec Class 1 Public Primary Certification Authority - G4"
+-CKA_CERTIFICATE_TYPE CK_CERTIFICATE_TYPE CKC_X_509
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+-END
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+-END
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+-CKA_NSS_MOZILLA_CA_POLICY CK_BBOOL CK_TRUE
+-CKA_NSS_SERVER_DISTRUST_AFTER CK_BBOOL CK_FALSE
+-CKA_NSS_EMAIL_DISTRUST_AFTER CK_BBOOL CK_FALSE
+-
+-# Trust for "Symantec Class 1 Public Primary Certification Authority - G4"
+-# Issuer: CN=Symantec Class 1 Public Primary Certification Authority - G4,OU=Symantec Trust Network,O=Symantec Corporation,C=US
+-# Serial Number:21:6e:33:a5:cb:d3:88:a4:6f:29:07:b4:27:3c:c4:d8
+-# Subject: CN=Symantec Class 1 Public Primary Certification Authority - G4,OU=Symantec Trust Network,O=Symantec Corporation,C=US
+-# Not Valid Before: Wed Oct 05 00:00:00 2011
+-# Not Valid After : Mon Jan 18 23:59:59 2038
+-# Fingerprint (SHA-256): 36:3F:3C:84:9E:AB:03:B0:A2:A0:F6:36:D7:B8:6D:04:D3:AC:7F:CF:E2:6A:0A:91:21:AB:97:95:F6:E1:76:DF
+-# Fingerprint (SHA1): 84:F2:E3:DD:83:13:3E:A9:1D:19:52:7F:02:D7:29:BF:C1:5F:E6:67
+-CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST
+-CKA_TOKEN CK_BBOOL CK_TRUE
+-CKA_PRIVATE CK_BBOOL CK_FALSE
+-CKA_MODIFIABLE CK_BBOOL CK_FALSE
+-CKA_LABEL UTF8 "Symantec Class 1 Public Primary Certification Authority - G4"
+-CKA_CERT_SHA1_HASH MULTILINE_OCTAL
+-\204\362\343\335\203\023\076\251\035\031\122\177\002\327\051\277
+-\301\137\346\147
+-END
+-CKA_CERT_MD5_HASH MULTILINE_OCTAL
+-\004\345\200\077\125\377\131\207\244\062\322\025\245\345\252\346
+-END
+-CKA_ISSUER MULTILINE_OCTAL
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+-END
+-CKA_SERIAL_NUMBER MULTILINE_OCTAL
+-\002\020\041\156\063\245\313\323\210\244\157\051\007\264\047\074
+-\304\330
+-END
+-CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+-CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+-CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+-CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
+-
+-#
+-# Certificate "Symantec Class 2 Public Primary Certification Authority - G4"
+-#
+-# Issuer: CN=Symantec Class 2 Public Primary Certification Authority - G4,OU=Symantec Trust Network,O=Symantec Corporation,C=US
+-# Serial Number:34:17:65:12:40:3b:b7:56:80:2d:80:cb:79:55:a6:1e
+-# Subject: CN=Symantec Class 2 Public Primary Certification Authority - G4,OU=Symantec Trust Network,O=Symantec Corporation,C=US
+-# Not Valid Before: Wed Oct 05 00:00:00 2011
+-# Not Valid After : Mon Jan 18 23:59:59 2038
+-# Fingerprint (SHA-256): FE:86:3D:08:22:FE:7A:23:53:FA:48:4D:59:24:E8:75:65:6D:3D:C9:FB:58:77:1F:6F:61:6F:9D:57:1B:C5:92
+-# Fingerprint (SHA1): 67:24:90:2E:48:01:B0:22:96:40:10:46:B4:B1:67:2C:A9:75:FD:2B
+-CKA_CLASS CK_OBJECT_CLASS CKO_CERTIFICATE
+-CKA_TOKEN CK_BBOOL CK_TRUE
+-CKA_PRIVATE CK_BBOOL CK_FALSE
+-CKA_MODIFIABLE CK_BBOOL CK_FALSE
+-CKA_LABEL UTF8 "Symantec Class 2 Public Primary Certification Authority - G4"
+-CKA_CERTIFICATE_TYPE CK_CERTIFICATE_TYPE CKC_X_509
+-CKA_SUBJECT MULTILINE_OCTAL
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+-END
+-CKA_ID UTF8 "0"
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+-CKA_SERIAL_NUMBER MULTILINE_OCTAL
+-\002\020\064\027\145\022\100\073\267\126\200\055\200\313\171\125
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+-END
+-CKA_VALUE MULTILINE_OCTAL
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++\166\053\201\127\335\175\332\164\060\375\124\107\366\340\026\156
++\246\264\012\110\346\347\165\007\017\051\031\071\316\171\364\266
++\154\305\137\231\325\037\113\372\337\155\054\074\015\124\200\160
++\360\210\013\200\317\306\150\242\270\035\160\331\166\214\374\356
++\245\311\317\255\035\317\231\045\127\132\142\105\313\026\153\275
++\111\315\245\243\214\151\171\045\256\270\114\154\213\100\146\113
++\026\077\317\002\032\335\341\154\153\007\141\152\166\025\051\231
++\177\033\335\210\200\301\277\265\217\163\305\246\226\043\204\246
++\050\206\044\063\152\001\056\127\163\045\266\136\277\217\346\035
++\141\250\100\051\147\035\207\233\035\177\233\237\231\315\061\326
++\124\276\142\273\071\254\150\022\110\221\040\245\313\261\335\376
++\157\374\132\344\202\125\131\257\061\251
+ END
+ CKA_NSS_MOZILLA_CA_POLICY CK_BBOOL CK_TRUE
+ CKA_NSS_SERVER_DISTRUST_AFTER CK_BBOOL CK_FALSE
+ CKA_NSS_EMAIL_DISTRUST_AFTER CK_BBOOL CK_FALSE
+ 
+-# Trust for "Symantec Class 2 Public Primary Certification Authority - G4"
+-# Issuer: CN=Symantec Class 2 Public Primary Certification Authority - G4,OU=Symantec Trust Network,O=Symantec Corporation,C=US
+-# Serial Number:34:17:65:12:40:3b:b7:56:80:2d:80:cb:79:55:a6:1e
+-# Subject: CN=Symantec Class 2 Public Primary Certification Authority - G4,OU=Symantec Trust Network,O=Symantec Corporation,C=US
+-# Not Valid Before: Wed Oct 05 00:00:00 2011
+-# Not Valid After : Mon Jan 18 23:59:59 2038
+-# Fingerprint (SHA-256): FE:86:3D:08:22:FE:7A:23:53:FA:48:4D:59:24:E8:75:65:6D:3D:C9:FB:58:77:1F:6F:61:6F:9D:57:1B:C5:92
+-# Fingerprint (SHA1): 67:24:90:2E:48:01:B0:22:96:40:10:46:B4:B1:67:2C:A9:75:FD:2B
++# Trust for "Symantec Class 2 Public Primary Certification Authority - G6"
++# Issuer: CN=Symantec Class 2 Public Primary Certification Authority - G6,OU=Symantec Trust Network,O=Symantec Corporation,C=US
++# Serial Number:64:82:9e:fc:37:1e:74:5d:fc:97:ff:97:c8:b1:ff:41
++# Subject: CN=Symantec Class 2 Public Primary Certification Authority - G6,OU=Symantec Trust Network,O=Symantec Corporation,C=US
++# Not Valid Before: Tue Oct 18 00:00:00 2011
++# Not Valid After : Tue Dec 01 23:59:59 2037
++# Fingerprint (SHA-256): CB:62:7D:18:B5:8A:D5:6D:DE:33:1A:30:45:6B:C6:5C:60:1A:4E:9B:18:DE:DC:EA:08:E7:DA:AA:07:81:5F:F0
++# Fingerprint (SHA1): 40:B3:31:A0:E9:BF:E8:55:BC:39:93:CA:70:4F:4E:C2:51:D4:1D:8F
+ CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST
+ CKA_TOKEN CK_BBOOL CK_TRUE
+ CKA_PRIVATE CK_BBOOL CK_FALSE
+ CKA_MODIFIABLE CK_BBOOL CK_FALSE
+-CKA_LABEL UTF8 "Symantec Class 2 Public Primary Certification Authority - G4"
++CKA_LABEL UTF8 "Symantec Class 2 Public Primary Certification Authority - G6"
+ CKA_CERT_SHA1_HASH MULTILINE_OCTAL
+-\147\044\220\056\110\001\260\042\226\100\020\106\264\261\147\054
+-\251\165\375\053
++\100\263\061\240\351\277\350\125\274\071\223\312\160\117\116\302
++\121\324\035\217
+ END
+ CKA_CERT_MD5_HASH MULTILINE_OCTAL
+-\160\325\060\361\332\224\227\324\327\164\337\276\355\150\336\226
++\175\013\203\345\373\174\255\007\117\040\251\265\337\143\355\171
+ END
+ CKA_ISSUER MULTILINE_OCTAL
+ \060\201\224\061\013\060\011\006\003\125\004\006\023\002\125\123
+@@ -19748,11 +18559,11 @@ CKA_ISSUER MULTILINE_OCTAL
+ \164\145\143\040\103\154\141\163\163\040\062\040\120\165\142\154
+ \151\143\040\120\162\151\155\141\162\171\040\103\145\162\164\151
+ \146\151\143\141\164\151\157\156\040\101\165\164\150\157\162\151
+-\164\171\040\055\040\107\064
++\164\171\040\055\040\107\066
+ END
+ CKA_SERIAL_NUMBER MULTILINE_OCTAL
+-\002\020\064\027\145\022\100\073\267\126\200\055\200\313\171\125
+-\246\036
++\002\020\144\202\236\374\067\036\164\135\374\227\377\227\310\261
++\377\101
+ END
+ CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+@@ -23590,3 +22401,579 @@ CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+ CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
+ CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
+ CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
++
++#
++# Certificate "Microsoft ECC Root Certificate Authority 2017"
++#
++# Issuer: CN=Microsoft ECC Root Certificate Authority 2017,O=Microsoft Corporation,C=US
++# Serial Number:66:f2:3d:af:87:de:8b:b1:4a:ea:0c:57:31:01:c2:ec
++# Subject: CN=Microsoft ECC Root Certificate Authority 2017,O=Microsoft Corporation,C=US
++# Not Valid Before: Wed Dec 18 23:06:45 2019
++# Not Valid After : Fri Jul 18 23:16:04 2042
++# Fingerprint (SHA-256): 35:8D:F3:9D:76:4A:F9:E1:B7:66:E9:C9:72:DF:35:2E:E1:5C:FA:C2:27:AF:6A:D1:D7:0E:8E:4A:6E:DC:BA:02
++# Fingerprint (SHA1): 99:9A:64:C3:7F:F4:7D:9F:AB:95:F1:47:69:89:14:60:EE:C4:C3:C5
++CKA_CLASS CK_OBJECT_CLASS CKO_CERTIFICATE
++CKA_TOKEN CK_BBOOL CK_TRUE
++CKA_PRIVATE CK_BBOOL CK_FALSE
++CKA_MODIFIABLE CK_BBOOL CK_FALSE
++CKA_LABEL UTF8 "Microsoft ECC Root Certificate Authority 2017"
++CKA_CERTIFICATE_TYPE CK_CERTIFICATE_TYPE CKC_X_509
++CKA_SUBJECT MULTILINE_OCTAL
++\060\145\061\013\060\011\006\003\125\004\006\023\002\125\123\061
++\036\060\034\006\003\125\004\012\023\025\115\151\143\162\157\163
++\157\146\164\040\103\157\162\160\157\162\141\164\151\157\156\061
++\066\060\064\006\003\125\004\003\023\055\115\151\143\162\157\163
++\157\146\164\040\105\103\103\040\122\157\157\164\040\103\145\162
++\164\151\146\151\143\141\164\145\040\101\165\164\150\157\162\151
++\164\171\040\062\060\061\067
++END
++CKA_ID UTF8 "0"
++CKA_ISSUER MULTILINE_OCTAL
++\060\145\061\013\060\011\006\003\125\004\006\023\002\125\123\061
++\036\060\034\006\003\125\004\012\023\025\115\151\143\162\157\163
++\157\146\164\040\103\157\162\160\157\162\141\164\151\157\156\061
++\066\060\064\006\003\125\004\003\023\055\115\151\143\162\157\163
++\157\146\164\040\105\103\103\040\122\157\157\164\040\103\145\162
++\164\151\146\151\143\141\164\145\040\101\165\164\150\157\162\151
++\164\171\040\062\060\061\067
++END
++CKA_SERIAL_NUMBER MULTILINE_OCTAL
++\002\020\146\362\075\257\207\336\213\261\112\352\014\127\061\001
++\302\354
++END
++CKA_VALUE MULTILINE_OCTAL
++\060\202\002\131\060\202\001\337\240\003\002\001\002\002\020\146
++\362\075\257\207\336\213\261\112\352\014\127\061\001\302\354\060
++\012\006\010\052\206\110\316\075\004\003\003\060\145\061\013\060
++\011\006\003\125\004\006\023\002\125\123\061\036\060\034\006\003
++\125\004\012\023\025\115\151\143\162\157\163\157\146\164\040\103
++\157\162\160\157\162\141\164\151\157\156\061\066\060\064\006\003
++\125\004\003\023\055\115\151\143\162\157\163\157\146\164\040\105
++\103\103\040\122\157\157\164\040\103\145\162\164\151\146\151\143
++\141\164\145\040\101\165\164\150\157\162\151\164\171\040\062\060
++\061\067\060\036\027\015\061\071\061\062\061\070\062\063\060\066
++\064\065\132\027\015\064\062\060\067\061\070\062\063\061\066\060
++\064\132\060\145\061\013\060\011\006\003\125\004\006\023\002\125
++\123\061\036\060\034\006\003\125\004\012\023\025\115\151\143\162
++\157\163\157\146\164\040\103\157\162\160\157\162\141\164\151\157
++\156\061\066\060\064\006\003\125\004\003\023\055\115\151\143\162
++\157\163\157\146\164\040\105\103\103\040\122\157\157\164\040\103
++\145\162\164\151\146\151\143\141\164\145\040\101\165\164\150\157
++\162\151\164\171\040\062\060\061\067\060\166\060\020\006\007\052
++\206\110\316\075\002\001\006\005\053\201\004\000\042\003\142\000
++\004\324\274\075\002\102\165\101\023\043\315\200\004\206\002\121
++\057\152\250\201\142\013\145\314\366\312\235\036\157\112\146\121
++\242\003\331\235\221\372\266\026\261\214\156\336\174\315\333\171
++\246\057\316\273\316\161\057\345\245\253\050\354\143\004\146\231
++\370\372\362\223\020\005\341\201\050\102\343\306\150\364\346\033
++\204\140\112\211\257\355\171\017\073\316\361\366\104\365\001\170
++\300\243\124\060\122\060\016\006\003\125\035\017\001\001\377\004
++\004\003\002\001\206\060\017\006\003\125\035\023\001\001\377\004
++\005\060\003\001\001\377\060\035\006\003\125\035\016\004\026\004
++\024\310\313\231\162\160\122\014\370\346\276\262\004\127\051\052
++\317\102\020\355\065\060\020\006\011\053\006\001\004\001\202\067
++\025\001\004\003\002\001\000\060\012\006\010\052\206\110\316\075
++\004\003\003\003\150\000\060\145\002\060\130\362\115\352\014\371
++\137\136\356\140\051\313\072\362\333\326\062\204\031\077\174\325
++\057\302\261\314\223\256\120\273\011\062\306\306\355\176\311\066
++\224\022\344\150\205\006\242\033\320\057\002\061\000\231\351\026
++\264\016\372\126\110\324\244\060\026\221\170\333\124\214\145\001
++\212\347\120\146\302\061\267\071\272\270\032\042\007\116\374\153
++\124\026\040\377\053\265\347\114\014\115\246\117\163
++END
++CKA_NSS_MOZILLA_CA_POLICY CK_BBOOL CK_TRUE
++CKA_NSS_SERVER_DISTRUST_AFTER CK_BBOOL CK_FALSE
++CKA_NSS_EMAIL_DISTRUST_AFTER CK_BBOOL CK_FALSE
++
++# Trust for "Microsoft ECC Root Certificate Authority 2017"
++# Issuer: CN=Microsoft ECC Root Certificate Authority 2017,O=Microsoft Corporation,C=US
++# Serial Number:66:f2:3d:af:87:de:8b:b1:4a:ea:0c:57:31:01:c2:ec
++# Subject: CN=Microsoft ECC Root Certificate Authority 2017,O=Microsoft Corporation,C=US
++# Not Valid Before: Wed Dec 18 23:06:45 2019
++# Not Valid After : Fri Jul 18 23:16:04 2042
++# Fingerprint (SHA-256): 35:8D:F3:9D:76:4A:F9:E1:B7:66:E9:C9:72:DF:35:2E:E1:5C:FA:C2:27:AF:6A:D1:D7:0E:8E:4A:6E:DC:BA:02
++# Fingerprint (SHA1): 99:9A:64:C3:7F:F4:7D:9F:AB:95:F1:47:69:89:14:60:EE:C4:C3:C5
++CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST
++CKA_TOKEN CK_BBOOL CK_TRUE
++CKA_PRIVATE CK_BBOOL CK_FALSE
++CKA_MODIFIABLE CK_BBOOL CK_FALSE
++CKA_LABEL UTF8 "Microsoft ECC Root Certificate Authority 2017"
++CKA_CERT_SHA1_HASH MULTILINE_OCTAL
++\231\232\144\303\177\364\175\237\253\225\361\107\151\211\024\140
++\356\304\303\305
++END
++CKA_CERT_MD5_HASH MULTILINE_OCTAL
++\335\241\003\346\112\223\020\321\277\360\031\102\313\376\355\147
++END
++CKA_ISSUER MULTILINE_OCTAL
++\060\145\061\013\060\011\006\003\125\004\006\023\002\125\123\061
++\036\060\034\006\003\125\004\012\023\025\115\151\143\162\157\163
++\157\146\164\040\103\157\162\160\157\162\141\164\151\157\156\061
++\066\060\064\006\003\125\004\003\023\055\115\151\143\162\157\163
++\157\146\164\040\105\103\103\040\122\157\157\164\040\103\145\162
++\164\151\146\151\143\141\164\145\040\101\165\164\150\157\162\151
++\164\171\040\062\060\061\067
++END
++CKA_SERIAL_NUMBER MULTILINE_OCTAL
++\002\020\146\362\075\257\207\336\213\261\112\352\014\127\061\001
++\302\354
++END
++CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
++CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
++CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
++CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
++
++#
++# Certificate "Microsoft RSA Root Certificate Authority 2017"
++#
++# Issuer: CN=Microsoft RSA Root Certificate Authority 2017,O=Microsoft Corporation,C=US
++# Serial Number:1e:d3:97:09:5f:d8:b4:b3:47:70:1e:aa:be:7f:45:b3
++# Subject: CN=Microsoft RSA Root Certificate Authority 2017,O=Microsoft Corporation,C=US
++# Not Valid Before: Wed Dec 18 22:51:22 2019
++# Not Valid After : Fri Jul 18 23:00:23 2042
++# Fingerprint (SHA-256): C7:41:F7:0F:4B:2A:8D:88:BF:2E:71:C1:41:22:EF:53:EF:10:EB:A0:CF:A5:E6:4C:FA:20:F4:18:85:30:73:E0
++# Fingerprint (SHA1): 73:A5:E6:4A:3B:FF:83:16:FF:0E:DC:CC:61:8A:90:6E:4E:AE:4D:74
++CKA_CLASS CK_OBJECT_CLASS CKO_CERTIFICATE
++CKA_TOKEN CK_BBOOL CK_TRUE
++CKA_PRIVATE CK_BBOOL CK_FALSE
++CKA_MODIFIABLE CK_BBOOL CK_FALSE
++CKA_LABEL UTF8 "Microsoft RSA Root Certificate Authority 2017"
++CKA_CERTIFICATE_TYPE CK_CERTIFICATE_TYPE CKC_X_509
++CKA_SUBJECT MULTILINE_OCTAL
++\060\145\061\013\060\011\006\003\125\004\006\023\002\125\123\061
++\036\060\034\006\003\125\004\012\023\025\115\151\143\162\157\163
++\157\146\164\040\103\157\162\160\157\162\141\164\151\157\156\061
++\066\060\064\006\003\125\004\003\023\055\115\151\143\162\157\163
++\157\146\164\040\122\123\101\040\122\157\157\164\040\103\145\162
++\164\151\146\151\143\141\164\145\040\101\165\164\150\157\162\151
++\164\171\040\062\060\061\067
++END
++CKA_ID UTF8 "0"
++CKA_ISSUER MULTILINE_OCTAL
++\060\145\061\013\060\011\006\003\125\004\006\023\002\125\123\061
++\036\060\034\006\003\125\004\012\023\025\115\151\143\162\157\163
++\157\146\164\040\103\157\162\160\157\162\141\164\151\157\156\061
++\066\060\064\006\003\125\004\003\023\055\115\151\143\162\157\163
++\157\146\164\040\122\123\101\040\122\157\157\164\040\103\145\162
++\164\151\146\151\143\141\164\145\040\101\165\164\150\157\162\151
++\164\171\040\062\060\061\067
++END
++CKA_SERIAL_NUMBER MULTILINE_OCTAL
++\002\020\036\323\227\011\137\330\264\263\107\160\036\252\276\177
++\105\263
++END
++CKA_VALUE MULTILINE_OCTAL
++\060\202\005\250\060\202\003\220\240\003\002\001\002\002\020\036
++\323\227\011\137\330\264\263\107\160\036\252\276\177\105\263\060
++\015\006\011\052\206\110\206\367\015\001\001\014\005\000\060\145
++\061\013\060\011\006\003\125\004\006\023\002\125\123\061\036\060
++\034\006\003\125\004\012\023\025\115\151\143\162\157\163\157\146
++\164\040\103\157\162\160\157\162\141\164\151\157\156\061\066\060
++\064\006\003\125\004\003\023\055\115\151\143\162\157\163\157\146
++\164\040\122\123\101\040\122\157\157\164\040\103\145\162\164\151
++\146\151\143\141\164\145\040\101\165\164\150\157\162\151\164\171
++\040\062\060\061\067\060\036\027\015\061\071\061\062\061\070\062
++\062\065\061\062\062\132\027\015\064\062\060\067\061\070\062\063
++\060\060\062\063\132\060\145\061\013\060\011\006\003\125\004\006
++\023\002\125\123\061\036\060\034\006\003\125\004\012\023\025\115
++\151\143\162\157\163\157\146\164\040\103\157\162\160\157\162\141
++\164\151\157\156\061\066\060\064\006\003\125\004\003\023\055\115
++\151\143\162\157\163\157\146\164\040\122\123\101\040\122\157\157
++\164\040\103\145\162\164\151\146\151\143\141\164\145\040\101\165
++\164\150\157\162\151\164\171\040\062\060\061\067\060\202\002\042
++\060\015\006\011\052\206\110\206\367\015\001\001\001\005\000\003
++\202\002\017\000\060\202\002\012\002\202\002\001\000\312\133\276
++\224\063\214\051\225\221\026\012\225\275\107\142\301\211\363\231
++\066\337\106\220\311\245\355\170\152\157\107\221\150\370\047\147
++\120\063\035\241\246\373\340\345\103\243\204\002\127\001\135\234
++\110\100\202\123\020\274\277\307\073\150\220\266\202\055\345\364
++\145\320\314\155\031\314\225\371\173\254\112\224\255\016\336\113
++\103\035\207\007\222\023\220\200\203\144\065\071\004\374\345\351
++\154\263\266\037\120\224\070\145\120\134\027\106\271\266\205\265
++\034\265\027\350\326\105\235\330\262\046\260\312\304\160\112\256
++\140\244\335\263\331\354\374\073\325\127\162\274\077\310\311\262
++\336\113\153\370\043\154\003\300\005\275\225\307\315\163\073\146
++\200\144\343\032\254\056\371\107\005\362\006\266\233\163\365\170
++\063\133\307\241\373\047\052\241\264\232\221\214\221\323\072\202
++\076\166\100\264\315\122\141\121\160\050\077\305\305\132\362\311
++\214\111\273\024\133\115\310\377\147\115\114\022\226\255\365\376
++\170\250\227\207\327\375\136\040\200\334\241\113\042\373\324\211
++\255\272\316\107\227\107\125\173\217\105\310\147\050\204\225\034
++\150\060\357\357\111\340\065\173\144\347\230\260\224\332\115\205
++\073\076\125\304\050\257\127\363\236\023\333\106\047\237\036\242
++\136\104\203\244\245\312\325\023\263\113\077\304\343\302\346\206
++\141\244\122\060\271\172\040\117\157\017\070\123\313\063\014\023
++\053\217\326\232\275\052\310\055\261\034\175\113\121\312\107\321
++\110\047\162\135\207\353\325\105\346\110\145\235\257\122\220\272
++\133\242\030\145\127\022\237\150\271\324\025\153\224\304\151\042
++\230\364\063\340\355\371\121\216\101\120\311\064\117\166\220\254
++\374\070\301\330\341\173\271\343\343\224\341\106\151\313\016\012
++\120\153\023\272\254\017\067\132\267\022\265\220\201\036\126\256
++\127\042\206\331\311\322\321\327\121\343\253\073\306\125\375\036
++\016\323\164\012\321\332\252\352\151\270\227\050\217\110\304\007
++\370\122\103\072\364\312\125\065\054\260\246\152\300\234\371\362
++\201\341\022\152\300\105\331\147\263\316\377\043\242\211\012\124
++\324\024\271\052\250\327\354\371\253\315\045\130\062\171\217\220
++\133\230\071\304\010\006\301\254\177\016\075\000\245\002\003\001
++\000\001\243\124\060\122\060\016\006\003\125\035\017\001\001\377
++\004\004\003\002\001\206\060\017\006\003\125\035\023\001\001\377
++\004\005\060\003\001\001\377\060\035\006\003\125\035\016\004\026
++\004\024\011\313\131\177\206\262\160\217\032\303\071\343\300\331
++\351\277\273\115\262\043\060\020\006\011\053\006\001\004\001\202
++\067\025\001\004\003\002\001\000\060\015\006\011\052\206\110\206
++\367\015\001\001\014\005\000\003\202\002\001\000\254\257\076\135
++\302\021\226\211\216\243\347\222\326\227\025\270\023\242\246\102
++\056\002\315\026\005\131\047\312\040\350\272\270\350\032\354\115
++\250\227\126\256\145\103\261\217\000\233\122\315\125\315\123\071
++\155\142\114\213\015\133\174\056\104\277\203\020\217\363\123\202
++\200\303\117\072\307\156\021\077\346\343\026\221\204\373\155\204
++\177\064\164\255\211\247\316\271\327\327\237\204\144\222\276\225
++\241\255\011\123\063\335\356\012\352\112\121\216\157\125\253\272
++\265\224\106\256\214\177\330\242\120\045\145\140\200\106\333\063
++\004\256\154\265\230\164\124\045\334\223\344\370\343\125\025\075
++\270\155\303\012\244\022\301\151\205\156\337\144\361\123\231\341
++\112\165\040\235\225\017\344\326\334\003\361\131\030\350\107\211
++\262\127\132\224\266\251\330\027\053\027\111\345\166\313\301\126
++\231\072\067\261\377\151\054\221\221\223\341\337\114\243\067\166
++\115\241\237\370\155\036\035\323\372\354\373\364\105\035\023\155
++\317\367\131\345\042\047\162\053\206\363\127\273\060\355\044\115
++\334\175\126\273\243\263\370\064\171\211\301\340\362\002\141\367
++\246\374\017\273\034\027\013\256\101\331\174\275\047\243\375\056
++\072\321\223\224\261\163\035\044\213\257\133\040\211\255\267\147
++\146\171\365\072\306\246\226\063\376\123\222\310\106\261\021\221
++\306\231\177\217\311\326\146\061\040\101\020\207\055\014\326\301
++\257\064\230\312\144\203\373\023\127\321\301\360\074\172\214\245
++\301\375\225\041\240\161\301\223\147\161\022\352\217\210\012\151
++\031\144\231\043\126\373\254\052\056\160\276\146\304\014\204\357
++\345\213\363\223\001\370\152\220\223\147\113\262\150\243\265\142
++\217\351\077\214\172\073\136\017\347\214\270\306\174\357\067\375
++\164\342\310\117\063\162\341\224\071\155\275\022\257\276\014\116
++\160\174\033\157\215\263\062\223\163\104\026\155\350\364\367\340
++\225\200\217\226\135\070\244\364\253\336\012\060\207\223\330\115
++\000\161\142\105\047\113\072\102\204\133\177\145\267\147\064\122
++\055\234\026\153\252\250\330\173\243\102\114\161\307\014\312\076
++\203\344\246\357\267\001\060\136\121\243\171\365\160\151\246\101
++\104\017\206\260\054\221\306\075\352\256\017\204
++END
++CKA_NSS_MOZILLA_CA_POLICY CK_BBOOL CK_TRUE
++CKA_NSS_SERVER_DISTRUST_AFTER CK_BBOOL CK_FALSE
++CKA_NSS_EMAIL_DISTRUST_AFTER CK_BBOOL CK_FALSE
++
++# Trust for "Microsoft RSA Root Certificate Authority 2017"
++# Issuer: CN=Microsoft RSA Root Certificate Authority 2017,O=Microsoft Corporation,C=US
++# Serial Number:1e:d3:97:09:5f:d8:b4:b3:47:70:1e:aa:be:7f:45:b3
++# Subject: CN=Microsoft RSA Root Certificate Authority 2017,O=Microsoft Corporation,C=US
++# Not Valid Before: Wed Dec 18 22:51:22 2019
++# Not Valid After : Fri Jul 18 23:00:23 2042
++# Fingerprint (SHA-256): C7:41:F7:0F:4B:2A:8D:88:BF:2E:71:C1:41:22:EF:53:EF:10:EB:A0:CF:A5:E6:4C:FA:20:F4:18:85:30:73:E0
++# Fingerprint (SHA1): 73:A5:E6:4A:3B:FF:83:16:FF:0E:DC:CC:61:8A:90:6E:4E:AE:4D:74
++CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST
++CKA_TOKEN CK_BBOOL CK_TRUE
++CKA_PRIVATE CK_BBOOL CK_FALSE
++CKA_MODIFIABLE CK_BBOOL CK_FALSE
++CKA_LABEL UTF8 "Microsoft RSA Root Certificate Authority 2017"
++CKA_CERT_SHA1_HASH MULTILINE_OCTAL
++\163\245\346\112\073\377\203\026\377\016\334\314\141\212\220\156
++\116\256\115\164
++END
++CKA_CERT_MD5_HASH MULTILINE_OCTAL
++\020\377\000\377\317\311\370\307\172\300\356\065\216\311\017\107
++END
++CKA_ISSUER MULTILINE_OCTAL
++\060\145\061\013\060\011\006\003\125\004\006\023\002\125\123\061
++\036\060\034\006\003\125\004\012\023\025\115\151\143\162\157\163
++\157\146\164\040\103\157\162\160\157\162\141\164\151\157\156\061
++\066\060\064\006\003\125\004\003\023\055\115\151\143\162\157\163
++\157\146\164\040\122\123\101\040\122\157\157\164\040\103\145\162
++\164\151\146\151\143\141\164\145\040\101\165\164\150\157\162\151
++\164\171\040\062\060\061\067
++END
++CKA_SERIAL_NUMBER MULTILINE_OCTAL
++\002\020\036\323\227\011\137\330\264\263\107\160\036\252\276\177
++\105\263
++END
++CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
++CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
++CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
++CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
++
++#
++# Certificate "e-Szigno Root CA 2017"
++#
++# Issuer: CN=e-Szigno Root CA 2017,OID.2.5.4.97=VATHU-23584497,O=Microsec Ltd.,L=Budapest,C=HU
++# Serial Number:01:54:48:ef:21:fd:97:59:0d:f5:04:0a
++# Subject: CN=e-Szigno Root CA 2017,OID.2.5.4.97=VATHU-23584497,O=Microsec Ltd.,L=Budapest,C=HU
++# Not Valid Before: Tue Aug 22 12:07:06 2017
++# Not Valid After : Fri Aug 22 12:07:06 2042
++# Fingerprint (SHA-256): BE:B0:0B:30:83:9B:9B:C3:2C:32:E4:44:79:05:95:06:41:F2:64:21:B1:5E:D0:89:19:8B:51:8A:E2:EA:1B:99
++# Fingerprint (SHA1): 89:D4:83:03:4F:9E:9A:48:80:5F:72:37:D4:A9:A6:EF:CB:7C:1F:D1
++CKA_CLASS CK_OBJECT_CLASS CKO_CERTIFICATE
++CKA_TOKEN CK_BBOOL CK_TRUE
++CKA_PRIVATE CK_BBOOL CK_FALSE
++CKA_MODIFIABLE CK_BBOOL CK_FALSE
++CKA_LABEL UTF8 "e-Szigno Root CA 2017"
++CKA_CERTIFICATE_TYPE CK_CERTIFICATE_TYPE CKC_X_509
++CKA_SUBJECT MULTILINE_OCTAL
++\060\161\061\013\060\011\006\003\125\004\006\023\002\110\125\061
++\021\060\017\006\003\125\004\007\014\010\102\165\144\141\160\145
++\163\164\061\026\060\024\006\003\125\004\012\014\015\115\151\143
++\162\157\163\145\143\040\114\164\144\056\061\027\060\025\006\003
++\125\004\141\014\016\126\101\124\110\125\055\062\063\065\070\064
++\064\071\067\061\036\060\034\006\003\125\004\003\014\025\145\055
++\123\172\151\147\156\157\040\122\157\157\164\040\103\101\040\062
++\060\061\067
++END
++CKA_ID UTF8 "0"
++CKA_ISSUER MULTILINE_OCTAL
++\060\161\061\013\060\011\006\003\125\004\006\023\002\110\125\061
++\021\060\017\006\003\125\004\007\014\010\102\165\144\141\160\145
++\163\164\061\026\060\024\006\003\125\004\012\014\015\115\151\143
++\162\157\163\145\143\040\114\164\144\056\061\027\060\025\006\003
++\125\004\141\014\016\126\101\124\110\125\055\062\063\065\070\064
++\064\071\067\061\036\060\034\006\003\125\004\003\014\025\145\055
++\123\172\151\147\156\157\040\122\157\157\164\040\103\101\040\062
++\060\061\067
++END
++CKA_SERIAL_NUMBER MULTILINE_OCTAL
++\002\014\001\124\110\357\041\375\227\131\015\365\004\012
++END
++CKA_VALUE MULTILINE_OCTAL
++\060\202\002\100\060\202\001\345\240\003\002\001\002\002\014\001
++\124\110\357\041\375\227\131\015\365\004\012\060\012\006\010\052
++\206\110\316\075\004\003\002\060\161\061\013\060\011\006\003\125
++\004\006\023\002\110\125\061\021\060\017\006\003\125\004\007\014
++\010\102\165\144\141\160\145\163\164\061\026\060\024\006\003\125
++\004\012\014\015\115\151\143\162\157\163\145\143\040\114\164\144
++\056\061\027\060\025\006\003\125\004\141\014\016\126\101\124\110
++\125\055\062\063\065\070\064\064\071\067\061\036\060\034\006\003
++\125\004\003\014\025\145\055\123\172\151\147\156\157\040\122\157
++\157\164\040\103\101\040\062\060\061\067\060\036\027\015\061\067
++\060\070\062\062\061\062\060\067\060\066\132\027\015\064\062\060
++\070\062\062\061\062\060\067\060\066\132\060\161\061\013\060\011
++\006\003\125\004\006\023\002\110\125\061\021\060\017\006\003\125
++\004\007\014\010\102\165\144\141\160\145\163\164\061\026\060\024
++\006\003\125\004\012\014\015\115\151\143\162\157\163\145\143\040
++\114\164\144\056\061\027\060\025\006\003\125\004\141\014\016\126
++\101\124\110\125\055\062\063\065\070\064\064\071\067\061\036\060
++\034\006\003\125\004\003\014\025\145\055\123\172\151\147\156\157
++\040\122\157\157\164\040\103\101\040\062\060\061\067\060\131\060
++\023\006\007\052\206\110\316\075\002\001\006\010\052\206\110\316
++\075\003\001\007\003\102\000\004\226\334\075\212\330\260\173\157
++\306\047\276\104\220\261\263\126\025\173\216\103\044\175\032\204
++\131\356\143\150\262\306\136\207\320\025\110\036\250\220\255\275
++\123\242\332\336\072\220\246\140\137\150\062\265\206\101\337\207
++\133\054\173\305\376\174\172\332\243\143\060\141\060\017\006\003
++\125\035\023\001\001\377\004\005\060\003\001\001\377\060\016\006
++\003\125\035\017\001\001\377\004\004\003\002\001\006\060\035\006
++\003\125\035\016\004\026\004\024\207\021\025\010\321\252\301\170
++\014\261\257\316\306\311\220\357\277\060\004\300\060\037\006\003
++\125\035\043\004\030\060\026\200\024\207\021\025\010\321\252\301
++\170\014\261\257\316\306\311\220\357\277\060\004\300\060\012\006
++\010\052\206\110\316\075\004\003\002\003\111\000\060\106\002\041
++\000\265\127\335\327\212\125\013\066\341\206\104\372\324\331\150
++\215\270\334\043\212\212\015\324\057\175\352\163\354\277\115\154
++\250\002\041\000\313\245\264\022\372\347\265\350\317\176\223\374
++\363\065\217\157\116\132\174\264\274\116\262\374\162\252\133\131
++\371\347\334\061
++END
++CKA_NSS_MOZILLA_CA_POLICY CK_BBOOL CK_TRUE
++CKA_NSS_SERVER_DISTRUST_AFTER CK_BBOOL CK_FALSE
++CKA_NSS_EMAIL_DISTRUST_AFTER CK_BBOOL CK_FALSE
++
++# Trust for "e-Szigno Root CA 2017"
++# Issuer: CN=e-Szigno Root CA 2017,OID.2.5.4.97=VATHU-23584497,O=Microsec Ltd.,L=Budapest,C=HU
++# Serial Number:01:54:48:ef:21:fd:97:59:0d:f5:04:0a
++# Subject: CN=e-Szigno Root CA 2017,OID.2.5.4.97=VATHU-23584497,O=Microsec Ltd.,L=Budapest,C=HU
++# Not Valid Before: Tue Aug 22 12:07:06 2017
++# Not Valid After : Fri Aug 22 12:07:06 2042
++# Fingerprint (SHA-256): BE:B0:0B:30:83:9B:9B:C3:2C:32:E4:44:79:05:95:06:41:F2:64:21:B1:5E:D0:89:19:8B:51:8A:E2:EA:1B:99
++# Fingerprint (SHA1): 89:D4:83:03:4F:9E:9A:48:80:5F:72:37:D4:A9:A6:EF:CB:7C:1F:D1
++CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST
++CKA_TOKEN CK_BBOOL CK_TRUE
++CKA_PRIVATE CK_BBOOL CK_FALSE
++CKA_MODIFIABLE CK_BBOOL CK_FALSE
++CKA_LABEL UTF8 "e-Szigno Root CA 2017"
++CKA_CERT_SHA1_HASH MULTILINE_OCTAL
++\211\324\203\003\117\236\232\110\200\137\162\067\324\251\246\357
++\313\174\037\321
++END
++CKA_CERT_MD5_HASH MULTILINE_OCTAL
++\336\037\366\236\204\256\247\264\041\316\036\130\175\321\204\230
++END
++CKA_ISSUER MULTILINE_OCTAL
++\060\161\061\013\060\011\006\003\125\004\006\023\002\110\125\061
++\021\060\017\006\003\125\004\007\014\010\102\165\144\141\160\145
++\163\164\061\026\060\024\006\003\125\004\012\014\015\115\151\143
++\162\157\163\145\143\040\114\164\144\056\061\027\060\025\006\003
++\125\004\141\014\016\126\101\124\110\125\055\062\063\065\070\064
++\064\071\067\061\036\060\034\006\003\125\004\003\014\025\145\055
++\123\172\151\147\156\157\040\122\157\157\164\040\103\101\040\062
++\060\061\067
++END
++CKA_SERIAL_NUMBER MULTILINE_OCTAL
++\002\014\001\124\110\357\041\375\227\131\015\365\004\012
++END
++CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
++CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
++CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
++CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
++
++#
++# Certificate "certSIGN Root CA G2"
++#
++# Issuer: OU=certSIGN ROOT CA G2,O=CERTSIGN SA,C=RO
++# Serial Number:11:00:34:b6:4e:c6:36:2d:36
++# Subject: OU=certSIGN ROOT CA G2,O=CERTSIGN SA,C=RO
++# Not Valid Before: Mon Feb 06 09:27:35 2017
++# Not Valid After : Thu Feb 06 09:27:35 2042
++# Fingerprint (SHA-256): 65:7C:FE:2F:A7:3F:AA:38:46:25:71:F3:32:A2:36:3A:46:FC:E7:02:09:51:71:07:02:CD:FB:B6:EE:DA:33:05
++# Fingerprint (SHA1): 26:F9:93:B4:ED:3D:28:27:B0:B9:4B:A7:E9:15:1D:A3:8D:92:E5:32
++CKA_CLASS CK_OBJECT_CLASS CKO_CERTIFICATE
++CKA_TOKEN CK_BBOOL CK_TRUE
++CKA_PRIVATE CK_BBOOL CK_FALSE
++CKA_MODIFIABLE CK_BBOOL CK_FALSE
++CKA_LABEL UTF8 "certSIGN Root CA G2"
++CKA_CERTIFICATE_TYPE CK_CERTIFICATE_TYPE CKC_X_509
++CKA_SUBJECT MULTILINE_OCTAL
++\060\101\061\013\060\011\006\003\125\004\006\023\002\122\117\061
++\024\060\022\006\003\125\004\012\023\013\103\105\122\124\123\111
++\107\116\040\123\101\061\034\060\032\006\003\125\004\013\023\023
++\143\145\162\164\123\111\107\116\040\122\117\117\124\040\103\101
++\040\107\062
++END
++CKA_ID UTF8 "0"
++CKA_ISSUER MULTILINE_OCTAL
++\060\101\061\013\060\011\006\003\125\004\006\023\002\122\117\061
++\024\060\022\006\003\125\004\012\023\013\103\105\122\124\123\111
++\107\116\040\123\101\061\034\060\032\006\003\125\004\013\023\023
++\143\145\162\164\123\111\107\116\040\122\117\117\124\040\103\101
++\040\107\062
++END
++CKA_SERIAL_NUMBER MULTILINE_OCTAL
++\002\011\021\000\064\266\116\306\066\055\066
++END
++CKA_VALUE MULTILINE_OCTAL
++\060\202\005\107\060\202\003\057\240\003\002\001\002\002\011\021
++\000\064\266\116\306\066\055\066\060\015\006\011\052\206\110\206
++\367\015\001\001\013\005\000\060\101\061\013\060\011\006\003\125
++\004\006\023\002\122\117\061\024\060\022\006\003\125\004\012\023
++\013\103\105\122\124\123\111\107\116\040\123\101\061\034\060\032
++\006\003\125\004\013\023\023\143\145\162\164\123\111\107\116\040
++\122\117\117\124\040\103\101\040\107\062\060\036\027\015\061\067
++\060\062\060\066\060\071\062\067\063\065\132\027\015\064\062\060
++\062\060\066\060\071\062\067\063\065\132\060\101\061\013\060\011
++\006\003\125\004\006\023\002\122\117\061\024\060\022\006\003\125
++\004\012\023\013\103\105\122\124\123\111\107\116\040\123\101\061
++\034\060\032\006\003\125\004\013\023\023\143\145\162\164\123\111
++\107\116\040\122\117\117\124\040\103\101\040\107\062\060\202\002
++\042\060\015\006\011\052\206\110\206\367\015\001\001\001\005\000
++\003\202\002\017\000\060\202\002\012\002\202\002\001\000\300\305
++\165\031\221\175\104\164\164\207\376\016\073\226\334\330\001\026
++\314\356\143\221\347\013\157\316\073\012\151\032\174\302\343\257
++\202\216\206\327\136\217\127\353\323\041\131\375\071\067\102\060
++\276\120\352\266\017\251\210\330\056\055\151\041\347\321\067\030
++\116\175\221\325\026\137\153\133\000\302\071\103\015\066\205\122
++\271\123\145\017\035\102\345\217\317\005\323\356\334\014\032\331
++\270\213\170\042\147\344\151\260\150\305\074\344\154\132\106\347
++\315\307\372\357\304\354\113\275\152\244\254\375\314\050\121\357
++\222\264\051\253\253\065\232\114\344\304\010\306\046\314\370\151
++\237\344\234\360\051\323\134\371\306\026\045\236\043\303\040\301
++\075\017\077\070\100\260\376\202\104\070\252\132\032\212\153\143
++\130\070\264\025\323\266\021\151\173\036\124\356\214\032\042\254
++\162\227\077\043\131\233\311\042\204\301\007\117\314\177\342\127
++\312\022\160\273\246\145\363\151\165\143\275\225\373\033\227\315
++\344\250\257\366\321\116\250\331\212\161\044\315\066\075\274\226
++\304\361\154\251\256\345\317\015\156\050\015\260\016\265\312\121
++\173\170\024\303\040\057\177\373\024\125\341\021\231\375\325\012
++\241\236\002\343\142\137\353\065\113\054\270\162\350\076\075\117
++\254\054\273\056\206\342\243\166\217\345\223\052\317\245\253\310
++\134\215\113\006\377\022\106\254\170\313\024\007\065\340\251\337
++\213\351\257\025\117\026\211\133\275\366\215\306\131\256\210\205
++\016\301\211\353\037\147\305\105\216\377\155\067\066\053\170\146
++\203\221\121\053\075\377\121\167\166\142\241\354\147\076\076\201
++\203\340\126\251\120\037\037\172\231\253\143\277\204\027\167\361
++\015\073\337\367\234\141\263\065\230\212\072\262\354\074\032\067
++\077\176\217\222\317\331\022\024\144\332\020\002\025\101\377\117
++\304\353\034\243\311\372\231\367\106\351\341\030\331\261\270\062
++\055\313\024\014\120\330\203\145\203\356\271\134\317\313\005\132
++\114\372\031\227\153\326\135\023\323\302\134\124\274\062\163\240
++\170\365\361\155\036\313\237\245\246\237\042\334\321\121\236\202
++\171\144\140\051\023\076\243\375\117\162\152\253\342\324\345\270
++\044\125\054\104\113\212\210\104\234\312\204\323\052\073\002\003
++\001\000\001\243\102\060\100\060\017\006\003\125\035\023\001\001
++\377\004\005\060\003\001\001\377\060\016\006\003\125\035\017\001
++\001\377\004\004\003\002\001\006\060\035\006\003\125\035\016\004
++\026\004\024\202\041\055\146\306\327\240\340\025\353\316\114\011
++\167\304\140\236\124\156\003\060\015\006\011\052\206\110\206\367
++\015\001\001\013\005\000\003\202\002\001\000\140\336\032\270\347
++\362\140\202\325\003\063\201\313\006\212\361\042\111\351\350\352
++\221\177\306\063\136\150\031\003\206\073\103\001\317\007\160\344
++\010\036\145\205\221\346\021\042\267\365\002\043\216\256\271\036
++\175\037\176\154\346\275\045\325\225\032\362\005\246\257\205\002
++\157\256\370\326\061\377\045\311\112\310\307\212\251\331\237\113
++\111\233\021\127\231\222\103\021\336\266\063\244\314\327\215\144
++\175\324\315\074\050\054\264\232\226\352\115\365\304\104\304\045
++\252\040\200\330\051\125\367\340\101\374\006\046\377\271\066\365
++\103\024\003\146\170\341\021\261\332\040\137\106\000\170\000\041
++\245\036\000\050\141\170\157\250\001\001\217\235\064\232\377\364
++\070\220\373\270\321\263\162\006\311\161\346\201\305\171\355\013
++\246\171\362\023\013\234\367\135\016\173\044\223\264\110\333\206
++\137\336\120\206\170\347\100\346\061\250\220\166\160\141\257\234
++\067\054\021\265\202\267\252\256\044\064\133\162\014\151\015\315
++\131\237\366\161\257\234\013\321\012\070\371\006\042\203\123\045
++\014\374\121\304\346\276\342\071\225\013\044\255\257\321\225\344
++\226\327\164\144\153\161\116\002\074\252\205\363\040\243\103\071
++\166\133\154\120\376\232\234\024\036\145\024\212\025\275\243\202
++\105\132\111\126\152\322\234\261\143\062\345\141\340\123\042\016
++\247\012\111\352\313\176\037\250\342\142\200\366\020\105\122\230
++\006\030\336\245\315\057\177\252\324\351\076\010\162\354\043\003
++\002\074\246\252\330\274\147\164\075\024\027\373\124\113\027\343
++\323\171\075\155\153\111\311\050\016\056\164\120\277\014\331\106
++\072\020\206\311\247\077\351\240\354\177\353\245\167\130\151\161
++\346\203\012\067\362\206\111\152\276\171\010\220\366\002\026\144
++\076\345\332\114\176\014\064\311\371\137\266\263\050\121\247\247
++\053\252\111\372\215\145\051\116\343\153\023\247\224\243\055\121
++\155\170\014\104\313\337\336\010\157\316\243\144\253\323\225\204
++\324\271\122\124\162\173\226\045\314\274\151\343\110\156\015\320
++\307\235\047\232\252\370\023\222\335\036\337\143\237\065\251\026
++\066\354\214\270\203\364\075\211\217\315\264\027\136\327\263\027
++\101\020\135\047\163\140\205\127\111\042\007
++END
++CKA_NSS_MOZILLA_CA_POLICY CK_BBOOL CK_TRUE
++CKA_NSS_SERVER_DISTRUST_AFTER CK_BBOOL CK_FALSE
++CKA_NSS_EMAIL_DISTRUST_AFTER CK_BBOOL CK_FALSE
++
++# Trust for "certSIGN Root CA G2"
++# Issuer: OU=certSIGN ROOT CA G2,O=CERTSIGN SA,C=RO
++# Serial Number:11:00:34:b6:4e:c6:36:2d:36
++# Subject: OU=certSIGN ROOT CA G2,O=CERTSIGN SA,C=RO
++# Not Valid Before: Mon Feb 06 09:27:35 2017
++# Not Valid After : Thu Feb 06 09:27:35 2042
++# Fingerprint (SHA-256): 65:7C:FE:2F:A7:3F:AA:38:46:25:71:F3:32:A2:36:3A:46:FC:E7:02:09:51:71:07:02:CD:FB:B6:EE:DA:33:05
++# Fingerprint (SHA1): 26:F9:93:B4:ED:3D:28:27:B0:B9:4B:A7:E9:15:1D:A3:8D:92:E5:32
++CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST
++CKA_TOKEN CK_BBOOL CK_TRUE
++CKA_PRIVATE CK_BBOOL CK_FALSE
++CKA_MODIFIABLE CK_BBOOL CK_FALSE
++CKA_LABEL UTF8 "certSIGN Root CA G2"
++CKA_CERT_SHA1_HASH MULTILINE_OCTAL
++\046\371\223\264\355\075\050\047\260\271\113\247\351\025\035\243
++\215\222\345\062
++END
++CKA_CERT_MD5_HASH MULTILINE_OCTAL
++\214\361\165\212\306\031\317\224\267\367\145\040\207\303\227\307
++END
++CKA_ISSUER MULTILINE_OCTAL
++\060\101\061\013\060\011\006\003\125\004\006\023\002\122\117\061
++\024\060\022\006\003\125\004\012\023\013\103\105\122\124\123\111
++\107\116\040\123\101\061\034\060\032\006\003\125\004\013\023\023
++\143\145\162\164\123\111\107\116\040\122\117\117\124\040\103\101
++\040\107\062
++END
++CKA_SERIAL_NUMBER MULTILINE_OCTAL
++\002\011\021\000\064\266\116\306\066\055\066
++END
++CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_TRUSTED_DELEGATOR
++CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
++CKA_TRUST_CODE_SIGNING CK_TRUST CKT_NSS_MUST_VERIFY_TRUST
++CKA_TRUST_STEP_UP_APPROVED CK_BBOOL CK_FALSE
diff --git a/patches/node/fix_add_safeforterminationscopes_for_sigint_interruptions.patch b/patches/node/fix_add_safeforterminationscopes_for_sigint_interruptions.patch
new file mode 100644
index 0000000000000..be504a638fdb4
--- /dev/null
+++ b/patches/node/fix_add_safeforterminationscopes_for_sigint_interruptions.patch
@@ -0,0 +1,39 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Shelley Vohr <shelley.vohr@gmail.com>
+Date: Thu, 10 Dec 2020 14:39:33 -0800
+Subject: fix: add SafeForTerminationScopes for SIGINT interruptions
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+We start Node.js with only_terminate_in_safe_scope set to true becuase
+it's set by gin’s IsolateHolder. In those cases, parts of the API that
+expect execution termination to happen need to be marked as able to
+receive those events.
+
+Upstreamed at https://github.com/nodejs/node/pull/36344.
+
+diff --git a/src/module_wrap.cc b/src/module_wrap.cc
+index 29078bf6e58ce1782c08946dae760e7d62de486d..592cdedaa427393296ae5d9cd7c3a0d124b52673 100644
+--- a/src/module_wrap.cc
++++ b/src/module_wrap.cc
+@@ -313,6 +313,7 @@ void ModuleWrap::Evaluate(const FunctionCallbackInfo<Value>& args) {
+ 
+   ShouldNotAbortOnUncaughtScope no_abort_scope(env);
+   TryCatchScope try_catch(env);
++  Isolate::SafeForTerminationScope safe_for_termination(env->isolate());
+ 
+   bool timed_out = false;
+   bool received_signal = false;
+diff --git a/src/node_contextify.cc b/src/node_contextify.cc
+index 2d30e0b8038ce473d1c8740861e13c5eabc2a0be..0902ac29b6f48c86302954a22a6e3318dc29836e 100644
+--- a/src/node_contextify.cc
++++ b/src/node_contextify.cc
+@@ -902,6 +902,7 @@ bool ContextifyScript::EvalMachine(Environment* env,
+     return false;
+   }
+   TryCatchScope try_catch(env);
++  Isolate::SafeForTerminationScope safe_for_termination(env->isolate());
+   ContextifyScript* wrapped_script;
+   ASSIGN_OR_RETURN_UNWRAP(&wrapped_script, args.Holder(), false);
+   Local<UnboundScript> unbound_script =
diff --git a/patches/node/n-api_src_provide_asynchronous_cleanup_hooks.patch b/patches/node/n-api_src_provide_asynchronous_cleanup_hooks.patch
new file mode 100644
index 0000000000000..6c3e6e246826c
--- /dev/null
+++ b/patches/node/n-api_src_provide_asynchronous_cleanup_hooks.patch
@@ -0,0 +1,250 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Shelley Vohr <shelley.vohr@gmail.com>
+Date: Tue, 25 Aug 2020 19:34:12 -0700
+Subject: n-api,src: provide asynchronous cleanup hooks
+
+Backports https://github.com/nodejs/node/pull/34572 and
+https://github.com/nodejs/node/pull/34819.
+
+Sometimes addons need to perform cleanup actions, for example
+closing libuv handles or waiting for requests to finish, that
+cannot be performed synchronously.
+
+Add C++ API and N-API functions that allow providing such
+asynchronous cleanup hooks.
+
+This patch can be removed when Electron upgrades to a version of Node.js
+which contains the above referenced commit(s).
+
+diff --git a/src/api/hooks.cc b/src/api/hooks.cc
+index 2dd0cc994ea7f2087e90b33e51aeebf27ff6386b..773fb01bc3a3d5e87ab3d5a82cd4ac9888992e1f 100644
+--- a/src/api/hooks.cc
++++ b/src/api/hooks.cc
+@@ -67,8 +67,35 @@ int EmitExit(Environment* env) {
+       .ToChecked();
+ }
+ 
++typedef void (*CleanupHook)(void* arg);
++typedef void (*AsyncCleanupHook)(void* arg, void(*)(void*), void*);
++
++struct AsyncCleanupHookInfo final {
++  Environment* env;
++  AsyncCleanupHook fun;
++  void* arg;
++  bool started = false;
++  // Use a self-reference to make sure the storage is kept alive while the
++  // cleanup hook is registered but not yet finished.
++  std::shared_ptr<AsyncCleanupHookInfo> self;
++};
++
++// Opaque type that is basically an alias for `shared_ptr<AsyncCleanupHookInfo>`
++// (but not publicly so for easier ABI/API changes). In particular,
++// std::shared_ptr does not generally maintain a consistent ABI even on a
++// specific platform.
++struct ACHHandle final {
++  std::shared_ptr<AsyncCleanupHookInfo> info;
++};
++// This is implemented as an operator on a struct because otherwise you can't
++// default-initialize AsyncCleanupHookHandle, because in C++ for a
++// std::unique_ptr to be default-initializable the deleter type also needs
++// to be default-initializable; in particular, function types don't satisfy
++// this.
++void DeleteACHHandle::operator ()(ACHHandle* handle) const { delete handle; }
++
+ void AddEnvironmentCleanupHook(Isolate* isolate,
+-                               void (*fun)(void* arg),
++                               CleanupHook fun,
+                                void* arg) {
+   Environment* env = Environment::GetCurrent(isolate);
+   CHECK_NOT_NULL(env);
+@@ -76,13 +103,50 @@ void AddEnvironmentCleanupHook(Isolate* isolate,
+ }
+ 
+ void RemoveEnvironmentCleanupHook(Isolate* isolate,
+-                                  void (*fun)(void* arg),
++                                  CleanupHook fun,
+                                   void* arg) {
+   Environment* env = Environment::GetCurrent(isolate);
+   CHECK_NOT_NULL(env);
+   env->RemoveCleanupHook(fun, arg);
+ }
+ 
++static void FinishAsyncCleanupHook(void* arg) {
++  AsyncCleanupHookInfo* info = static_cast<AsyncCleanupHookInfo*>(arg);
++  std::shared_ptr<AsyncCleanupHookInfo> keep_alive = info->self;
++
++  info->env->DecreaseWaitingRequestCounter();
++  info->self.reset();
++}
++
++static void RunAsyncCleanupHook(void* arg) {
++  AsyncCleanupHookInfo* info = static_cast<AsyncCleanupHookInfo*>(arg);
++  info->env->IncreaseWaitingRequestCounter();
++  info->started = true;
++  info->fun(info->arg, FinishAsyncCleanupHook, info);
++}
++
++AsyncCleanupHookHandle AddEnvironmentCleanupHook(
++    Isolate* isolate,
++    AsyncCleanupHook fun,
++    void* arg) {
++  Environment* env = Environment::GetCurrent(isolate);
++  CHECK_NOT_NULL(env);
++  auto info = std::make_shared<AsyncCleanupHookInfo>();
++  info->env = env;
++  info->fun = fun;
++  info->arg = arg;
++  info->self = info;
++  env->AddCleanupHook(RunAsyncCleanupHook, info.get());
++  return AsyncCleanupHookHandle(new ACHHandle { info });
++}
++
++void RemoveEnvironmentCleanupHook(
++    AsyncCleanupHookHandle handle) {
++  if (handle->info->started) return;
++  handle->info->self.reset();
++  handle->info->env->RemoveCleanupHook(RunAsyncCleanupHook, handle->info.get());
++}
++
+ async_id AsyncHooksGetExecutionAsyncId(Isolate* isolate) {
+   Environment* env = Environment::GetCurrent(isolate);
+   if (env == nullptr) return -1;
+diff --git a/src/node.h b/src/node.h
+index a279cc7cc6205907eb5f9c3f6237513b2354f6be..370e65a9e533c2e9fda42f70dc090fbe39725c42 100644
+--- a/src/node.h
++++ b/src/node.h
+@@ -738,6 +738,20 @@ NODE_EXTERN void RemoveEnvironmentCleanupHook(v8::Isolate* isolate,
+                                               void (*fun)(void* arg),
+                                               void* arg);
+ 
++/* These are async equivalents of the above. After the cleanup hook is invoked,
++ * `cb(cbarg)` *must* be called, and attempting to remove the cleanup hook will
++ * have no effect. */
++struct ACHHandle;
++struct NODE_EXTERN DeleteACHHandle { void operator()(ACHHandle*) const; };
++typedef std::unique_ptr<ACHHandle, DeleteACHHandle> AsyncCleanupHookHandle;
++
++NODE_EXTERN AsyncCleanupHookHandle AddEnvironmentCleanupHook(
++    v8::Isolate* isolate,
++    void (*fun)(void* arg, void (*cb)(void*), void* cbarg),
++    void* arg);
++
++NODE_EXTERN void RemoveEnvironmentCleanupHook(AsyncCleanupHookHandle holder);
++
+ /* Returns the id of the current execution context. If the return value is
+  * zero then no execution has been set. This will happen if the user handles
+  * I/O from native code. */
+diff --git a/src/node_api.cc b/src/node_api.cc
+index fad9cf72a972c280da049b559a5585b7945082ca..973832769e47b9042f9836e11e46819240d707c3 100644
+--- a/src/node_api.cc
++++ b/src/node_api.cc
+@@ -527,6 +527,70 @@ napi_status napi_remove_env_cleanup_hook(napi_env env,
+   return napi_ok;
+ }
+ 
++struct napi_async_cleanup_hook_handle__ {
++  napi_async_cleanup_hook_handle__(napi_env env,
++                                   napi_async_cleanup_hook user_hook,
++                                   void* user_data):
++      env_(env),
++      user_hook_(user_hook),
++      user_data_(user_data) {
++    handle_ = node::AddEnvironmentCleanupHook(env->isolate, Hook, this);
++    env->Ref();
++  }
++
++  ~napi_async_cleanup_hook_handle__() {
++    node::RemoveEnvironmentCleanupHook(std::move(handle_));
++    if (done_cb_ != nullptr)
++      done_cb_(done_data_);
++
++    // Release the `env` handle asynchronously since it would be surprising if
++    // a call to a N-API function would destroy `env` synchronously.
++    static_cast<node_napi_env>(env_)->node_env()
++        ->SetImmediate([env = env_](node::Environment*) { env->Unref(); });
++  }
++
++  static void Hook(void* data, void (*done_cb)(void*), void* done_data) {
++    auto handle = static_cast<napi_async_cleanup_hook_handle__*>(data);
++    handle->done_cb_ = done_cb;
++    handle->done_data_ = done_data;
++    handle->user_hook_(handle, handle->user_data_);
++  }
++
++  node::AsyncCleanupHookHandle handle_;
++  napi_env env_ = nullptr;
++  napi_async_cleanup_hook user_hook_ = nullptr;
++  void* user_data_ = nullptr;
++  void (*done_cb_)(void*) = nullptr;
++  void* done_data_ = nullptr;
++};
++
++napi_status napi_add_async_cleanup_hook(
++    napi_env env,
++    napi_async_cleanup_hook hook,
++    void* arg,
++    napi_async_cleanup_hook_handle* remove_handle) {
++  CHECK_ENV(env);
++  CHECK_ARG(env, hook);
++
++  napi_async_cleanup_hook_handle__* handle =
++    new napi_async_cleanup_hook_handle__(env, hook, arg);
++
++  if (remove_handle != nullptr)
++    *remove_handle = handle;
++
++  return napi_clear_last_error(env);
++}
++
++napi_status napi_remove_async_cleanup_hook(
++    napi_async_cleanup_hook_handle remove_handle) {
++
++  if (remove_handle == nullptr)
++    return napi_invalid_arg;
++
++  delete remove_handle;
++  return napi_ok;
++}
++
+ napi_status napi_fatal_exception(napi_env env, napi_value err) {
+   NAPI_PREAMBLE(env);
+   CHECK_ARG(env, err);
+diff --git a/src/node_api.h b/src/node_api.h
+index a4d3cc60e9bb5c28b9904934141ccfe977e42430..7c6ffff9bc3b0e66391e803438ff37e3cf8d7fe8 100644
+--- a/src/node_api.h
++++ b/src/node_api.h
+@@ -234,6 +234,19 @@ napi_ref_threadsafe_function(napi_env env, napi_threadsafe_function func);
+ 
+ #endif  // NAPI_VERSION >= 4
+ 
++#ifdef NAPI_EXPERIMENTAL
++
++NAPI_EXTERN napi_status napi_add_async_cleanup_hook(
++    napi_env env,
++    napi_async_cleanup_hook hook,
++    void* arg,
++    napi_async_cleanup_hook_handle* remove_handle);
++
++NAPI_EXTERN napi_status napi_remove_async_cleanup_hook(
++    napi_async_cleanup_hook_handle remove_handle);
++
++#endif  // NAPI_EXPERIMENTAL
++
+ EXTERN_C_END
+ 
+ #endif  // SRC_NODE_API_H_
+diff --git a/src/node_api_types.h b/src/node_api_types.h
+index 1c9a2b8aa21889c0d29fb02b234ae9698d122c2c..0e400e9676df5ba09d350fe7a2a70a1dc9e4d3d6 100644
+--- a/src/node_api_types.h
++++ b/src/node_api_types.h
+@@ -41,4 +41,10 @@ typedef struct {
+   const char* release;
+ } napi_node_version;
+ 
++#ifdef NAPI_EXPERIMENTAL
++typedef struct napi_async_cleanup_hook_handle__* napi_async_cleanup_hook_handle;
++typedef void (*napi_async_cleanup_hook)(napi_async_cleanup_hook_handle handle,
++                                        void* data);
++#endif  // NAPI_EXPERIMENTAL
++
+ #endif  // SRC_NODE_API_TYPES_H_
diff --git a/patches/pdfium/.patches b/patches/pdfium/.patches
new file mode 100644
index 0000000000000..8df9cdc9bd683
--- /dev/null
+++ b/patches/pdfium/.patches
@@ -0,0 +1 @@
+cherry-pick-9591642a0896.patch
diff --git a/patches/pdfium/cherry-pick-9591642a0896.patch b/patches/pdfium/cherry-pick-9591642a0896.patch
new file mode 100644
index 0000000000000..0d9cd3502bab8
--- /dev/null
+++ b/patches/pdfium/cherry-pick-9591642a0896.patch
@@ -0,0 +1,33 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Tom Sepez <tsepez@chromium.org>
+Date: Mon, 19 Oct 2020 17:07:57 +0000
+Subject: Reverse order of CPWL_ListCtrl and CPWL_List_Notify cleanup
+
+(Speculative) fix for the crash in 1137630, since it only reproduces
+sporadically on my system, but hasn't re-occured since applying the
+patch.
+
+TBR: thestig@chromium.org
+Bug: chromium:1137630
+Change-Id: I4f52c7109eca00dfa8faee9bc6341cd94c25b60c
+Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/75090
+Reviewed-by: Lei Zhang <thestig@chromium.org>
+Commit-Queue: Tom Sepez <tsepez@chromium.org>
+(cherry picked from commit 7dd9dbd6dd4959a568e7701da19871f859f8dce2)
+Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/75350
+Reviewed-by: Tom Sepez <tsepez@chromium.org>
+
+diff --git a/fpdfsdk/pwl/cpwl_list_box.h b/fpdfsdk/pwl/cpwl_list_box.h
+index 48b53e514dcb5a307b099b4ae427f83e9311f20c..1e56697f86318a5d371a6690fce9ec50c60e5150 100644
+--- a/fpdfsdk/pwl/cpwl_list_box.h
++++ b/fpdfsdk/pwl/cpwl_list_box.h
+@@ -97,8 +97,8 @@ class CPWL_ListBox : public CPWL_Wnd {
+  protected:
+   bool m_bMouseDown = false;
+   bool m_bHoverSel = false;
++  std::unique_ptr<CPWL_List_Notify> m_pListNotify;  // Must outlive |m_pList|.
+   std::unique_ptr<CPWL_ListCtrl> m_pList;
+-  std::unique_ptr<CPWL_List_Notify> m_pListNotify;
+   UnownedPtr<IPWL_Filler_Notify> m_pFillerNotify;
+ 
+  private:
diff --git a/patches/skia/.patches b/patches/skia/.patches
new file mode 100644
index 0000000000000..9db688a673039
--- /dev/null
+++ b/patches/skia/.patches
@@ -0,0 +1,3 @@
+cherry-pick-6763a713f957.patch
+cherry-pick-b0d3d3e85fa6.patch
+skscalercontext_getimage_less_brittle.patch
diff --git a/patches/skia/cherry-pick-6763a713f957.patch b/patches/skia/cherry-pick-6763a713f957.patch
new file mode 100644
index 0000000000000..2b6197d04e9df
--- /dev/null
+++ b/patches/skia/cherry-pick-6763a713f957.patch
@@ -0,0 +1,31 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Brian Osman <brianosman@google.com>
+Date: Thu, 3 Sep 2020 15:19:14 -0400
+Subject: Limit morphology radius to 100 pixels
+
+This limit is arbitrary, but hopefully prevents pathological (or
+malicious) SVG content from consuming huge amounts of CPU/GPU time,
+without impacting any legitimate uses of feMorphology. (Typical usage
+has a much smaller radius).
+
+Bug: chromium:1123035
+Change-Id: I4405bc595128e9a6287eb5efa1be14621baa3a00
+Reviewed-on: https://skia-review.googlesource.com/c/skia/+/315219
+Reviewed-by: Mike Reed <reed@google.com>
+Commit-Queue: Brian Osman <brianosman@google.com>
+
+diff --git a/src/effects/imagefilters/SkMorphologyImageFilter.cpp b/src/effects/imagefilters/SkMorphologyImageFilter.cpp
+index 35f35d7f8d6bb3c9b4aca8057d5b876c237dbb22..a9a617f648e2fa229d6a555610fac4c737dd1459 100644
+--- a/src/effects/imagefilters/SkMorphologyImageFilter.cpp
++++ b/src/effects/imagefilters/SkMorphologyImageFilter.cpp
+@@ -663,7 +663,9 @@ sk_sp<SkSpecialImage> SkMorphologyImageFilterImpl::onFilterImage(const Context&
+     int height = SkScalarRoundToInt(radius.height());
+ 
+     // Width (or height) must fit in a signed 32-bit int to avoid UBSAN issues (crbug.com/1018190)
+-    constexpr int kMaxRadius = (std::numeric_limits<int>::max() - 1) / 2;
++    // Further, we limit the radius to something much smaller, to avoid extremely slow draw calls:
++    // (crbug.com/1123035):
++    constexpr int kMaxRadius = 100; // (std::numeric_limits<int>::max() - 1) / 2;
+ 
+     if (width < 0 || height < 0 || width > kMaxRadius || height > kMaxRadius) {
+         return nullptr;
diff --git a/patches/skia/cherry-pick-b0d3d3e85fa6.patch b/patches/skia/cherry-pick-b0d3d3e85fa6.patch
new file mode 100644
index 0000000000000..6a64139ab6a5b
--- /dev/null
+++ b/patches/skia/cherry-pick-b0d3d3e85fa6.patch
@@ -0,0 +1,158 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Brian Salomon <bsalomon@google.com>
+Date: Tue, 19 Jan 2021 10:28:15 -0500
+Subject: Fix DrawEdgeAAQuad degenerate issue where 3D points don't correctly
+ project to 2D points.
+
+Bug: chromium:1162942
+
+Change-Id: Idc1dcb725ff9eae651b84de2fe792b188dcd1c1b
+Reviewed-on: https://skia-review.googlesource.com/c/skia/+/354671
+Commit-Queue: Brian Salomon <bsalomon@google.com>
+Reviewed-by: Michael Ludwig <michaelludwig@google.com>
+(cherry picked from commit 7656c4b7e89b4ff00480a6d7a8a19e3fd0e5c86e)
+Reviewed-on: https://skia-review.googlesource.com/c/skia/+/360376
+Reviewed-by: Brian Salomon <bsalomon@google.com>
+
+diff --git a/gm/crbug_1162942.cpp b/gm/crbug_1162942.cpp
+new file mode 100644
+index 0000000000000000000000000000000000000000..e5d1f6360f3d68e1d3e353752e2e676928c93aef
+--- /dev/null
++++ b/gm/crbug_1162942.cpp
+@@ -0,0 +1,60 @@
++/*
++ * Copyright 2020 Google LLC
++ *
++ * Use of this source code is governed by a BSD-style license that can be
++ * found in the LICENSE file.
++ */
++
++#include "gm/gm.h"
++#include "include/core/SkCanvas.h"
++#include "include/core/SkMatrix.h"
++#include "include/core/SkRect.h"
++
++// This tests a scenario where when the 2D projection of a perspective quad is inset we degenerate
++// the inset 2d geometry to a triangle because an inset vertex crosses the opposite edge. When we
++// project back to 3D and try to move the original verts along the original edges so that they
++// project to the 2D points. Whether an edge can be moved along depends on whether the adjacent edge
++// at the vertex is AA. However, in the degenerate triangle case the 2D point may not fall along
++// either of the edges. Thus, if we're constrained to moving along one edge and solve for X or Y the
++// other value may go wildly away from projecting to the 2D value. The current approach is to force
++// AA on at both edges that meet at a vertex whose inset point has been replaced by an off-edge
++// point if either is AA originally. This gives us an additional vector to move along so that we can
++// find a 3D point that projects to the 2D point in both X and Y.
++DEF_SIMPLE_GM(crbug_1162942, canvas, 620, 200) {
++    // Matrix and quad values taken from Chrome repro scenario.
++    SkMatrix ctm = SkMatrix::MakeAll(
++            SkBits2Float(0x3FCC7F75), SkBits2Float(0x3D5784FC), SkBits2Float(0x44C48C99),
++            SkBits2Float(0x3F699F7F), SkBits2Float(0x3E0A0D37), SkBits2Float(0x43908518),
++            SkBits2Float(0x3AA17423), SkBits2Float(0x3A6CCDC3), SkBits2Float(0x3F2EFEEC));
++    ctm.postTranslate(-1500.f, -325.f);
++
++    SkPoint pts[4] = {{SkBits2Float(0x3F39778B), SkBits2Float(0x43FF7FFC)},
++                      {SkBits2Float(0x0), SkBits2Float(0x43FF7FFA)},
++                      {SkBits2Float(0xB83B055E), SkBits2Float(0x42500003)},
++                      {SkBits2Float(0x3F39776F), SkBits2Float(0x4250000D)}};
++    SkRect bounds;
++    bounds.setBounds(pts, 4);
++
++    canvas->clear(SK_ColorWHITE);
++
++    SkCanvas::QuadAAFlags flags[] = {
++            (SkCanvas::QuadAAFlags) (SkCanvas::kTop_QuadAAFlag    | SkCanvas::kLeft_QuadAAFlag ),
++            (SkCanvas::QuadAAFlags) (SkCanvas::kBottom_QuadAAFlag | SkCanvas::kRight_QuadAAFlag),
++            (SkCanvas::QuadAAFlags) (SkCanvas::kBottom_QuadAAFlag),
++            (SkCanvas::QuadAAFlags) (SkCanvas::kRight_QuadAAFlag),
++            (SkCanvas::QuadAAFlags) (SkCanvas::kRight_QuadAAFlag  | SkCanvas::kLeft_QuadAAFlag),
++            (SkCanvas::QuadAAFlags) (SkCanvas::kTop_QuadAAFlag    | SkCanvas::kBottom_QuadAAFlag),
++    };
++
++    SkColor color = SK_ColorGREEN;
++    for (auto aaFlags : flags) {
++        canvas->save();
++        canvas->concat(ctm);
++        canvas->experimental_DrawEdgeAAQuad(bounds, pts, aaFlags, color, SkBlendMode::kSrcOver);
++        SkColor rgb = color & 0x00FFFFFF;
++        color = 0xFF000000 | (rgb << 4) | (rgb >> 20);
++        canvas->restore();
++        canvas->translate(0, 25);
++    }
++}
++
+diff --git a/gn/gm.gni b/gn/gm.gni
+index 4ae72fb407084cb13d187ea6e4d0493e1dd4ea95..5ff5cd845765777508949ae24634292d0e6c0f67 100644
+--- a/gn/gm.gni
++++ b/gn/gm.gni
+@@ -107,6 +107,7 @@ gm_sources = [
+   "$_gm/copy_to_4444.cpp",
+   "$_gm/crbug_1041204.cpp",
+   "$_gm/crbug_1073670.cpp",
++  "$_gm/crbug_1162942.cpp",
+   "$_gm/crbug_224618.cpp",
+   "$_gm/crbug_691386.cpp",
+   "$_gm/crbug_788500.cpp",
+diff --git a/src/gpu/geometry/GrQuadUtils.cpp b/src/gpu/geometry/GrQuadUtils.cpp
+index 9650758a87695bec8df342d7d645bf7e71301e23..95442e3f678df42c3b5584c78985aa0df151668e 100644
+--- a/src/gpu/geometry/GrQuadUtils.cpp
++++ b/src/gpu/geometry/GrQuadUtils.cpp
+@@ -717,7 +717,10 @@ V4f TessellationHelper::EdgeEquations::estimateCoverage(const V4f& x2d, const V4
+ }
+ 
+ int TessellationHelper::EdgeEquations::computeDegenerateQuad(const V4f& signedEdgeDistances,
+-                                                             V4f* x2d, V4f* y2d) const {
++                                                             V4f* x2d, V4f* y2d,
++                                                             M4f* aaMask) const {
++    *aaMask = signedEdgeDistances != 0.f;
++
+     // Move the edge by the signed edge adjustment.
+     V4f oc = fC + signedEdgeDistances;
+ 
+@@ -792,10 +795,19 @@ int TessellationHelper::EdgeEquations::computeDegenerateQuad(const V4f& signedEd
+         if (SkScalarAbs(eDenom[0]) > kTolerance) {
+             px = if_then_else(d1v0, V4f(ex[0]), px);
+             py = if_then_else(d1v0, V4f(ey[0]), py);
++            // If we replace a vertex with an intersection then it will not fall along the
++            // edges that intersect at the original vertex. When we apply AA later to the
++            // original points we move along the original 3d edges to move towards the 2d
++            // points we're computing here. If we have an AA edge and a non-AA edge we
++            // can only move along 1 edge, but now the point we're moving toward isn't
++            // on that edge. Thus, we provide an additional degree of freedom by turning
++            // AA on for both edges if either edge is AA.
++            *aaMask = *aaMask | (d1v0 & skvx::shuffle<2, 0, 3, 1>(*aaMask));
+         }
+         if (SkScalarAbs(eDenom[1]) > kTolerance) {
+             px = if_then_else(d2v0, V4f(ex[1]), px);
+             py = if_then_else(d2v0, V4f(ey[1]), py);
++            *aaMask = *aaMask | (d2v0 & skvx::shuffle<2, 0, 3, 1>(*aaMask));
+         }
+ 
+         *x2d = px;
+@@ -1156,9 +1168,11 @@ int TessellationHelper::adjustDegenerateVertices(const skvx::Vec<4, float>& sign
+         // handles perspective).
+         V4f x2d = fEdgeVectors.fX2D;
+         V4f y2d = fEdgeVectors.fY2D;
++
++        M4f aaMask;
+         int vertexCount = this->getEdgeEquations().computeDegenerateQuad(signedEdgeDistances,
+-                                                                         &x2d, &y2d);
+-        vertices->moveTo(x2d, y2d, signedEdgeDistances != 0.f);
++                                                                         &x2d, &y2d, &aaMask);
++        vertices->moveTo(x2d, y2d, aaMask);
+         return vertexCount;
+     }
+ }
+diff --git a/src/gpu/geometry/GrQuadUtils.h b/src/gpu/geometry/GrQuadUtils.h
+index dbbc4626e5cfb16db0e832e47477132f410ff13b..50b647bdb9c0efbf6faf8002f706b24ad0f0a2e3 100644
+--- a/src/gpu/geometry/GrQuadUtils.h
++++ b/src/gpu/geometry/GrQuadUtils.h
+@@ -111,7 +111,8 @@ namespace GrQuadUtils {
+             // small, edges are near parallel, or edges are very short/zero-length. Returns number
+             // of effective vertices in the degenerate quad.
+             int computeDegenerateQuad(const skvx::Vec<4, float>& signedEdgeDistances,
+-                                      skvx::Vec<4, float>* x2d, skvx::Vec<4, float>* y2d) const;
++                                      skvx::Vec<4, float>* x2d, skvx::Vec<4, float>* y2d,
++                                      skvx::Vec<4, int32_t>* aaMask) const;
+         };
+ 
+         struct OutsetRequest {
diff --git a/patches/skia/skscalercontext_getimage_less_brittle.patch b/patches/skia/skscalercontext_getimage_less_brittle.patch
new file mode 100644
index 0000000000000..1085f4f7379ed
--- /dev/null
+++ b/patches/skia/skscalercontext_getimage_less_brittle.patch
@@ -0,0 +1,199 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Ben Wagner <bungeman@google.com>
+Date: Thu, 1 Apr 2021 15:02:21 -0400
+Subject: SkScalerContext::getImage less brittle.
+
+Properly handle edge cases like
+ * the temporary glyph being a different size than expected
+ * filters which reduce in size
+ * filters which return false to indicate no filtering has been done
+
+Bug: chromium:1190525
+Change-Id: Ibc53eb1d7014210019e96cd6bae3e256d967be54
+Reviewed-on: https://skia-review.googlesource.com/c/skia/+/392156
+Commit-Queue: Ben Wagner <bungeman@google.com>
+Reviewed-by: Herb Derby <herb@google.com>
+(cherry picked from commit 348ee387a96d7d94733d46ad9e82b19cb890dd16)
+Reviewed-on: https://skia-review.googlesource.com/c/skia/+/392437
+
+diff --git a/src/core/SkScalerContext.cpp b/src/core/SkScalerContext.cpp
+index a2df87c3ef62790353b8fac8169d83bc657db3d4..d1cb80a631814e995c756dc23764a21b00e97270 100644
+--- a/src/core/SkScalerContext.cpp
++++ b/src/core/SkScalerContext.cpp
+@@ -534,41 +534,39 @@ static void generateMask(const SkMask& mask, const SkPath& path,
+ }
+ 
+ void SkScalerContext::getImage(const SkGlyph& origGlyph) {
+-    const SkGlyph*  glyph = &origGlyph;
++    const SkGlyph* unfilteredGlyph = &origGlyph;
+     SkGlyph  tmpGlyph{origGlyph.getPackedID()};
+ 
+     // in case we need to call generateImage on a mask-format that is different
+     // (i.e. larger) than what our caller allocated by looking at origGlyph.
+     SkAutoMalloc tmpGlyphImageStorage;
+ 
+-    if (fMaskFilter) {   // restore the prefilter bounds
+-
++    if (fMaskFilter) {
+         // need the original bounds, sans our maskfilter
+         sk_sp<SkMaskFilter> mf = std::move(fMaskFilter);
+         this->getMetrics(&tmpGlyph);
+         fMaskFilter = std::move(mf);
+ 
+-        // we need the prefilter bounds to be <= filter bounds
+-        SkASSERT(tmpGlyph.fWidth <= origGlyph.fWidth);
+-        SkASSERT(tmpGlyph.fHeight <= origGlyph.fHeight);
+-
+-        if (tmpGlyph.fMaskFormat == origGlyph.fMaskFormat) {
++        // Use the origGlyph storage for the temporary unfiltered mask if it will fit.
++        if (tmpGlyph.fMaskFormat == origGlyph.fMaskFormat &&
++            tmpGlyph.imageSize() <= origGlyph.imageSize())
++        {
+             tmpGlyph.fImage = origGlyph.fImage;
+         } else {
+             tmpGlyphImageStorage.reset(tmpGlyph.imageSize());
+             tmpGlyph.fImage = tmpGlyphImageStorage.get();
+         }
+-        glyph = &tmpGlyph;
++        unfilteredGlyph = &tmpGlyph;
+     }
+ 
+     if (!fGenerateImageFromPath) {
+-        generateImage(*glyph);
++        generateImage(*unfilteredGlyph);
+     } else {
+         SkPath devPath;
+-        SkMask mask = glyph->mask();
++        SkMask mask = unfilteredGlyph->mask();
+ 
+-        if (!this->internalGetPath(glyph->getPackedID(), &devPath)) {
+-            generateImage(*glyph);
++        if (!this->internalGetPath(unfilteredGlyph->getPackedID(), &devPath)) {
++            generateImage(*unfilteredGlyph);
+         } else {
+             SkASSERT(SkMask::kARGB32_Format != origGlyph.fMaskFormat);
+             SkASSERT(SkMask::kARGB32_Format != mask.fFormat);
+@@ -579,39 +577,98 @@ void SkScalerContext::getImage(const SkGlyph& origGlyph) {
+     }
+ 
+     if (fMaskFilter) {
+-        // the src glyph image shouldn't be 3D
+-        SkASSERT(SkMask::k3D_Format != glyph->fMaskFormat);
++        // k3D_Format should not be mask filtered.
++        SkASSERT(SkMask::k3D_Format != unfilteredGlyph->fMaskFormat);
++
++        SkMask filteredMask;
++        SkMask srcMask;
++        SkMatrix m;
++        fRec.getMatrixFrom2x2(&m);
++
++        if (as_MFB(fMaskFilter)->filterMask(&filteredMask, unfilteredGlyph->mask(), m, nullptr)) {
++            // Filter succeeded; filteredMask.fImage was allocated.
++            srcMask = filteredMask;
++        } else if (unfilteredGlyph->fImage == tmpGlyphImageStorage.get()) {
++            // Filter did nothing; unfiltered mask is independent of origGlyph.fImage.
++            srcMask = unfilteredGlyph->mask();
++        } else if (origGlyph.iRect() == unfilteredGlyph->iRect()) {
++            // Filter did nothing; the unfiltered mask is in origGlyph.fImage and matches.
++            return;
++        } else {
++            // Filter did nothing; the unfiltered mask is in origGlyph.fImage and conflicts.
++            srcMask = unfilteredGlyph->mask();
++            size_t imageSize = unfilteredGlyph->imageSize();
++            tmpGlyphImageStorage.reset(imageSize);
++            srcMask.fImage = static_cast<uint8_t*>(tmpGlyphImageStorage.get());
++            memcpy(srcMask.fImage, unfilteredGlyph->fImage, imageSize);
++        }
+ 
+-        SkMask      srcM = glyph->mask(),
+-                    dstM;
+-        SkMatrix    matrix;
++        SkASSERT_RELEASE(srcMask.fFormat == origGlyph.fMaskFormat);
++        SkMask dstMask = origGlyph.mask();
++        SkIRect origBounds = dstMask.fBounds;
+ 
+-        fRec.getMatrixFrom2x2(&matrix);
++        // Find the intersection of src and dst while updating the fImages.
++        if (srcMask.fBounds.fTop < dstMask.fBounds.fTop) {
++            int32_t topDiff = dstMask.fBounds.fTop - srcMask.fBounds.fTop;
++            srcMask.fImage += srcMask.fRowBytes * topDiff;
++            srcMask.fBounds.fTop = dstMask.fBounds.fTop;
++        }
++        if (dstMask.fBounds.fTop < srcMask.fBounds.fTop) {
++            int32_t topDiff = srcMask.fBounds.fTop - dstMask.fBounds.fTop;
++            dstMask.fImage += dstMask.fRowBytes * topDiff;
++            dstMask.fBounds.fTop = srcMask.fBounds.fTop;
++        }
+ 
+-        if (as_MFB(fMaskFilter)->filterMask(&dstM, srcM, matrix, nullptr)) {
+-            int width = std::min<int>(origGlyph.fWidth, dstM.fBounds.width());
+-            int height = std::min<int>(origGlyph.fHeight, dstM.fBounds.height());
+-            int dstRB = origGlyph.rowBytes();
+-            int srcRB = dstM.fRowBytes;
++        if (srcMask.fBounds.fLeft < dstMask.fBounds.fLeft) {
++            int32_t leftDiff = dstMask.fBounds.fLeft - srcMask.fBounds.fLeft;
++            srcMask.fImage += leftDiff;
++            srcMask.fBounds.fLeft = dstMask.fBounds.fLeft;
++        }
++        if (dstMask.fBounds.fLeft < srcMask.fBounds.fLeft) {
++            int32_t leftDiff = srcMask.fBounds.fLeft - dstMask.fBounds.fLeft;
++            dstMask.fImage += leftDiff;
++            dstMask.fBounds.fLeft = srcMask.fBounds.fLeft;
++        }
+ 
+-            const uint8_t* src = (const uint8_t*)dstM.fImage;
+-            uint8_t* dst = (uint8_t*)origGlyph.fImage;
++        if (srcMask.fBounds.fBottom < dstMask.fBounds.fBottom) {
++            dstMask.fBounds.fBottom = srcMask.fBounds.fBottom;
++        }
++        if (dstMask.fBounds.fBottom < srcMask.fBounds.fBottom) {
++            srcMask.fBounds.fBottom = dstMask.fBounds.fBottom;
++        }
+ 
+-            if (SkMask::k3D_Format == dstM.fFormat) {
+-                // we have to copy 3 times as much
+-                height *= 3;
+-            }
++        if (srcMask.fBounds.fRight < dstMask.fBounds.fRight) {
++            dstMask.fBounds.fRight = srcMask.fBounds.fRight;
++        }
++        if (dstMask.fBounds.fRight < srcMask.fBounds.fRight) {
++            srcMask.fBounds.fRight = dstMask.fBounds.fRight;
++        }
+ 
+-            // clean out our glyph, since it may be larger than dstM
+-            //sk_bzero(dst, height * dstRB);
++        SkASSERT(srcMask.fBounds == dstMask.fBounds);
++        int width = srcMask.fBounds.width();
++        int height = srcMask.fBounds.height();
++        int dstRB = dstMask.fRowBytes;
++        int srcRB = srcMask.fRowBytes;
+ 
+-            while (--height >= 0) {
+-                memcpy(dst, src, width);
+-                src += srcRB;
+-                dst += dstRB;
+-            }
+-            SkMask::FreeImage(dstM.fImage);
++        const uint8_t* src = srcMask.fImage;
++        uint8_t* dst = dstMask.fImage;
++
++        if (SkMask::k3D_Format == filteredMask.fFormat) {
++            // we have to copy 3 times as much
++            height *= 3;
++        }
++
++        // If not filling the full original glyph, clear it out first.
++        if (dstMask.fBounds != origBounds) {
++            sk_bzero(origGlyph.fImage, origGlyph.fHeight * origGlyph.rowBytes());
++        }
++
++        while (--height >= 0) {
++            memcpy(dst, src, width);
++            src += srcRB;
++            dst += dstRB;
+         }
++        SkMask::FreeImage(filteredMask.fImage);
+     }
+ }
+ 
diff --git a/patches/usrsctp/.patches b/patches/usrsctp/.patches
new file mode 100644
index 0000000000000..2a83101eb96d8
--- /dev/null
+++ b/patches/usrsctp/.patches
@@ -0,0 +1,4 @@
+fix_a_use-after-free_bug_for_the_userland_stack.patch
+cherry_picking_improve_the_input_validation_and_processing_of.patch
+cherry_picking_clean_up_more_resources_of_an_existing_sctp.patch
+cherry_picking_harden_the_handling_of_outgoing_streams.patch
diff --git a/patches/usrsctp/cherry_picking_clean_up_more_resources_of_an_existing_sctp.patch b/patches/usrsctp/cherry_picking_clean_up_more_resources_of_an_existing_sctp.patch
new file mode 100644
index 0000000000000..77f3e56af2542
--- /dev/null
+++ b/patches/usrsctp/cherry_picking_clean_up_more_resources_of_an_existing_sctp.patch
@@ -0,0 +1,104 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Michael Tuexen <tuexen@fh-muenster.de>
+Date: Sat, 12 Dec 2020 23:30:59 +0100
+Subject: Cherry picking: Clean up more resouces of an existing SCTP
+ association in case of a restart.
+
+This fixes a use-after-free scenario, which was reported by Felix
+Wilhelm from Google in case a peer is able to modify the cookie.
+However, this can also be triggered by an assciation restart under
+some specific conditions.
+
+diff --git a/usrsctplib/netinet/sctp_input.c b/usrsctplib/netinet/sctp_input.c
+index b8e1259d8cf0c90cf2dcb03a1fd853c11a6abbd3..5f16f85add50796a2f28227d89cc397d01ed10d4 100755
+--- a/usrsctplib/netinet/sctp_input.c
++++ b/usrsctplib/netinet/sctp_input.c
+@@ -34,7 +34,7 @@
+ 
+ #ifdef __FreeBSD__
+ #include <sys/cdefs.h>
+-__FBSDID("$FreeBSD: head/sys/netinet/sctp_input.c 366248 2020-09-29 09:36:06Z tuexen $");
++__FBSDID("$FreeBSD: head/sys/netinet/sctp_input.c 368593 2020-12-12 22:23:45Z tuexen $");
+ #endif
+ 
+ #include <netinet/sctp_os.h>
+@@ -1607,6 +1607,11 @@ sctp_process_cookie_existing(struct mbuf *m, int iphlen, int offset,
+ 	struct sctp_association *asoc;
+ 	struct sctp_init_chunk *init_cp, init_buf;
+ 	struct sctp_init_ack_chunk *initack_cp, initack_buf;
++	struct sctp_asconf_addr *aparam, *naparam;
++	struct sctp_asconf_ack *aack, *naack;
++	struct sctp_tmit_chunk *chk, *nchk;
++	struct sctp_stream_reset_list *strrst, *nstrrst;
++	struct sctp_queued_to_read *sq, *nsq;
+ 	struct sctp_nets *net;
+ 	struct mbuf *op_err;
+ 	struct timeval old;
+@@ -1903,8 +1908,7 @@ sctp_process_cookie_existing(struct mbuf *m, int iphlen, int offset,
+ 			 * kick us so it COULD still take a timeout
+ 			 * to move these.. but it can't hurt to mark them.
+ 			 */
+-			struct sctp_tmit_chunk *chk;
+-		        TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
++			TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
+ 				if (chk->sent < SCTP_DATAGRAM_RESEND) {
+ 					chk->sent = SCTP_DATAGRAM_RESEND;
+ 					sctp_flight_size_decrease(chk);
+@@ -2096,6 +2100,57 @@ sctp_process_cookie_existing(struct mbuf *m, int iphlen, int offset,
+ 			stcb->asoc.strmout[i].next_mid_unordered = 0;
+ 			stcb->asoc.strmout[i].last_msg_incomplete = 0;
+ 		}
++		TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) {
++			TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp);
++			SCTP_FREE(strrst, SCTP_M_STRESET);
++		}
++		TAILQ_FOREACH_SAFE(sq, &asoc->pending_reply_queue, next, nsq) {
++			TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
++			if (sq->data) {
++				sctp_m_freem(sq->data);
++				sq->data = NULL;
++			}
++			sctp_free_remote_addr(sq->whoFrom);
++			sq->whoFrom = NULL;
++			sq->stcb = NULL;
++			sctp_free_a_readq(stcb, sq);
++		}
++		TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) {
++			TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
++			if (chk->data) {
++				sctp_m_freem(chk->data);
++				chk->data = NULL;
++			}
++			if (chk->holds_key_ref)
++				sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
++			sctp_free_remote_addr(chk->whoTo);
++			SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
++			SCTP_DECR_CHK_COUNT();
++		}
++		TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) {
++			TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
++			if (chk->data) {
++				sctp_m_freem(chk->data);
++				chk->data = NULL;
++			}
++			if (chk->holds_key_ref)
++				sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
++			sctp_free_remote_addr(chk->whoTo);
++			SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
++			SCTP_DECR_CHK_COUNT();
++		}
++		TAILQ_FOREACH_SAFE(aparam, &asoc->asconf_queue, next, naparam) {
++			TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
++			SCTP_FREE(aparam,SCTP_M_ASC_ADDR);
++		}
++		TAILQ_FOREACH_SAFE(aack, &asoc->asconf_ack_sent, next, naack) {
++			TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
++			if (aack->data != NULL) {
++				sctp_m_freem(aack->data);
++			}
++			SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
++		}
++
+ 		/* process the INIT-ACK info (my info) */
+ 		asoc->my_vtag = ntohl(initack_cp->init.initiate_tag);
+ 		asoc->my_rwnd = ntohl(initack_cp->init.a_rwnd);
diff --git a/patches/usrsctp/cherry_picking_harden_the_handling_of_outgoing_streams.patch b/patches/usrsctp/cherry_picking_harden_the_handling_of_outgoing_streams.patch
new file mode 100644
index 0000000000000..0cd35c507eed8
--- /dev/null
+++ b/patches/usrsctp/cherry_picking_harden_the_handling_of_outgoing_streams.patch
@@ -0,0 +1,54 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Michael Tuexen <tuexen@fh-muenster.de>
+Date: Mon, 14 Dec 2020 00:57:51 +0100
+Subject: Cherry picking: Harden the handling of outgoing streams in case of an
+ restart or INIT collision.
+
+This avouds an out-of-bounce access in case the peer can
+break the cookie signature. Thanks to Felix Wilhelm from Google for
+reporting the issue.
+
+diff --git a/usrsctplib/netinet/sctp_input.c b/usrsctplib/netinet/sctp_input.c
+index 5f16f85add50796a2f28227d89cc397d01ed10d4..d538c347b967b89d99c7cdaf1fef173107319783 100755
+--- a/usrsctplib/netinet/sctp_input.c
++++ b/usrsctplib/netinet/sctp_input.c
+@@ -34,7 +34,7 @@
+ 
+ #ifdef __FreeBSD__
+ #include <sys/cdefs.h>
+-__FBSDID("$FreeBSD: head/sys/netinet/sctp_input.c 368593 2020-12-12 22:23:45Z tuexen $");
++__FBSDID("$FreeBSD: head/sys/netinet/sctp_input.c 368622 2020-12-13 23:51:51Z tuexen $");
+ #endif
+ 
+ #include <netinet/sctp_os.h>
+@@ -1898,7 +1898,9 @@ sctp_process_cookie_existing(struct mbuf *m, int iphlen, int offset,
+ 					 NULL);
+ 		}
+ 		asoc->my_rwnd = ntohl(initack_cp->init.a_rwnd);
+-		asoc->pre_open_streams = ntohs(initack_cp->init.num_outbound_streams);
++		if (asoc->pre_open_streams < asoc->streamoutcnt) {
++			asoc->pre_open_streams = asoc->streamoutcnt;
++		}
+ 
+ 		if (ntohl(init_cp->init.initiate_tag) != asoc->peer_vtag) {
+ 			/* Ok the peer probably discarded our
+@@ -2052,8 +2054,9 @@ sctp_process_cookie_existing(struct mbuf *m, int iphlen, int offset,
+ 			/* move to OPEN state, if not in SHUTDOWN_SENT */
+ 			SCTP_SET_STATE(stcb, SCTP_STATE_OPEN);
+ 		}
+-		asoc->pre_open_streams =
+-			ntohs(initack_cp->init.num_outbound_streams);
++		if (asoc->pre_open_streams < asoc->streamoutcnt) {
++			asoc->pre_open_streams = asoc->streamoutcnt;
++		}
+ 		asoc->init_seq_number = ntohl(initack_cp->init.initial_tsn);
+ 		asoc->sending_seq = asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number;
+ 		asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1;
+@@ -2373,7 +2376,6 @@ sctp_process_cookie_new(struct mbuf *m, int iphlen, int offset,
+ 	/* process the INIT-ACK info (my info) */
+ 	asoc->my_vtag = ntohl(initack_cp->init.initiate_tag);
+ 	asoc->my_rwnd = ntohl(initack_cp->init.a_rwnd);
+-	asoc->pre_open_streams = ntohs(initack_cp->init.num_outbound_streams);
+ 	asoc->init_seq_number = ntohl(initack_cp->init.initial_tsn);
+ 	asoc->sending_seq = asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number;
+ 	asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1;
diff --git a/patches/usrsctp/cherry_picking_improve_the_input_validation_and_processing_of.patch b/patches/usrsctp/cherry_picking_improve_the_input_validation_and_processing_of.patch
new file mode 100644
index 0000000000000..874ab72a80138
--- /dev/null
+++ b/patches/usrsctp/cherry_picking_improve_the_input_validation_and_processing_of.patch
@@ -0,0 +1,127 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Michael Tuexen <tuexen@fh-muenster.de>
+Date: Tue, 29 Sep 2020 11:38:11 +0200
+Subject: Cherry picking: Improve the input validation and processing of
+ cookies.
+
+This avoids setting the association in an inconsistent
+state, which could result in a use-after-free situation.
+The issue can be triggered by a malicious peer, if the peer
+can modify the cookie without the local endpoint recognizing it.
+
+Thanks to Ned Williamson for reporting the issue.
+
+diff --git a/usrsctplib/netinet/sctp_input.c b/usrsctplib/netinet/sctp_input.c
+index b7e4aea13613bef798be7cddc1e72d4c42afac8e..b8e1259d8cf0c90cf2dcb03a1fd853c11a6abbd3 100755
+--- a/usrsctplib/netinet/sctp_input.c
++++ b/usrsctplib/netinet/sctp_input.c
+@@ -34,7 +34,7 @@
+ 
+ #ifdef __FreeBSD__
+ #include <sys/cdefs.h>
+-__FBSDID("$FreeBSD: head/sys/netinet/sctp_input.c 355135 2019-11-27 19:32:29Z tuexen $");
++__FBSDID("$FreeBSD: head/sys/netinet/sctp_input.c 366248 2020-09-29 09:36:06Z tuexen $");
+ #endif
+ 
+ #include <netinet/sctp_os.h>
+@@ -2272,10 +2272,6 @@ sctp_process_cookie_new(struct mbuf *m, int iphlen, int offset,
+ 		                       vrf_id, port);
+ 		return (NULL);
+ 	}
+-	/* get the correct sctp_nets */
+-	if (netp)
+-		*netp = sctp_findnet(stcb, init_src);
+-
+ 	asoc = &stcb->asoc;
+ 	/* get scope variables out of cookie */
+ 	asoc->scope.ipv4_local_scope = cookie->ipv4_scope;
+@@ -2332,10 +2328,7 @@ sctp_process_cookie_new(struct mbuf *m, int iphlen, int offset,
+ 	asoc->advanced_peer_ack_point = asoc->last_acked_seq;
+ 
+ 	/* process the INIT info (peer's info) */
+-	if (netp)
+-		retval = sctp_process_init(init_cp, stcb);
+-	else
+-		retval = 0;
++	retval = sctp_process_init(init_cp, stcb);
+ 	if (retval < 0) {
+ #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ 		atomic_add_int(&stcb->asoc.refcnt, 1);
+@@ -2518,19 +2511,21 @@ sctp_process_cookie_new(struct mbuf *m, int iphlen, int offset,
+ 		 */
+ 		;
+ 	}
+-	/* since we did not send a HB make sure we don't double things */
+-	if ((netp) && (*netp))
+-		(*netp)->hb_responded = 1;
+-
+ 	if (stcb->asoc.sctp_autoclose_ticks &&
+ 	    sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTOCLOSE)) {
+ 		sctp_timer_start(SCTP_TIMER_TYPE_AUTOCLOSE, inp, stcb, NULL);
+ 	}
+ 	(void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
+-	if ((netp != NULL) && (*netp != NULL)) {
++	*netp = sctp_findnet(stcb, init_src);
++	if (*netp != NULL) {
+ 		struct timeval old;
+ 
+-		/* calculate the RTT and set the encaps port */
++		/*
++		 * Since we did not send a HB, make sure we don't double
++		 * things.
++		 */
++		(*netp)->hb_responded = 1;
++		/* Calculate the RTT. */
+ 		old.tv_sec = cookie->time_entered.tv_sec;
+ 		old.tv_usec = cookie->time_entered.tv_usec;
+ 		sctp_calculate_rto(stcb, asoc, *netp, &old, SCTP_RTT_FROM_NON_DATA);
+diff --git a/usrsctplib/netinet/sctp_pcb.c b/usrsctplib/netinet/sctp_pcb.c
+index 02779e536c14ac7fb707e1b30cac1ab72ee3ec66..cae35aedfd18df2cdfff82006b3e09250ed33b41 100755
+--- a/usrsctplib/netinet/sctp_pcb.c
++++ b/usrsctplib/netinet/sctp_pcb.c
+@@ -34,7 +34,7 @@
+ 
+ #ifdef __FreeBSD__
+ #include <sys/cdefs.h>
+-__FBSDID("$FreeBSD: head/sys/netinet/sctp_pcb.c 356377 2020-01-05 14:06:40Z tuexen $");
++__FBSDID("$FreeBSD: head/sys/netinet/sctp_pcb.c 366248 2020-09-29 09:36:06Z tuexen $");
+ #endif
+ 
+ #include <netinet/sctp_os.h>
+@@ -5011,7 +5011,15 @@ sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
+ 		if ((ntohs(sin->sin_port) == 0) ||
+ 		    (sin->sin_addr.s_addr == INADDR_ANY) ||
+ 		    (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
+-		    IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
++		    IN_MULTICAST(ntohl(sin->sin_addr.s_addr)) ||
++#if defined(__Userspace__)
++		    (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_CONN) != 0) ||
++		     (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) != 0) &&
++		      (SCTP_IPV6_V6ONLY(inp) != 0)))) {
++#else
++		    (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) != 0) &&
++		     (SCTP_IPV6_V6ONLY(inp) != 0))) {
++#endif
+ 			/* Invalid address */
+ 			SCTP_INP_RUNLOCK(inp);
+ 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
+@@ -5030,7 +5038,8 @@ sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
+ 		sin6 = (struct sockaddr_in6 *)firstaddr;
+ 		if ((ntohs(sin6->sin6_port) == 0) ||
+ 		    IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
+-		    IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
++		    IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr) ||
++		    ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0)) {
+ 			/* Invalid address */
+ 			SCTP_INP_RUNLOCK(inp);
+ 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
+@@ -5048,7 +5057,8 @@ sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
+ 
+ 		sconn = (struct sockaddr_conn *)firstaddr;
+ 		if ((ntohs(sconn->sconn_port) == 0) ||
+-		    (sconn->sconn_addr == NULL)) {
++		    (sconn->sconn_addr == NULL) ||
++		    ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_CONN) == 0)) {
+ 			/* Invalid address */
+ 			SCTP_INP_RUNLOCK(inp);
+ 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
diff --git a/patches/usrsctp/fix_a_use-after-free_bug_for_the_userland_stack.patch b/patches/usrsctp/fix_a_use-after-free_bug_for_the_userland_stack.patch
new file mode 100644
index 0000000000000..71e78e614f8bb
--- /dev/null
+++ b/patches/usrsctp/fix_a_use-after-free_bug_for_the_userland_stack.patch
@@ -0,0 +1,49 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Pedro Pontes <pepontes@microsoft.com>
+Date: Fri, 9 Oct 2020 18:03:51 +0200
+Subject: Fix a use-after-free bug for the userland stack.
+
+Backports https://github.com/sctplab/usrsctp/commit/ffed0925f27d404173c1e3e750d818f432d2c019?branch=ffed0925f27d404173c1e3e750d818f432d2c019
+
+diff --git a/usrsctplib/netinet/sctp_indata.c b/usrsctplib/netinet/sctp_indata.c
+index 8b332355a5bfe5c25fa4fcc4afe4a740957a9075..38e1a9196f514bd480e5f4e5e34609ba0d910762 100755
+--- a/usrsctplib/netinet/sctp_indata.c
++++ b/usrsctplib/netinet/sctp_indata.c
+@@ -1694,6 +1694,7 @@ sctp_process_a_data_chunk(struct sctp_tcb *stcb, struct sctp_association *asoc,
+ 			  int *break_flag, int last_chunk, uint8_t chk_type)
+ {
+ 	struct sctp_tmit_chunk *chk = NULL; /* make gcc happy */
++	struct sctp_stream_in *strm;
+ 	uint32_t tsn, fsn, gap, mid;
+ 	struct mbuf *dmbuf;
+ 	int the_len;
+@@ -2329,12 +2330,13 @@ finish_express_del:
+ 			/* All can be removed */
+ 			TAILQ_FOREACH_SAFE(control, &asoc->pending_reply_queue, next, ncontrol) {
+ 				TAILQ_REMOVE(&asoc->pending_reply_queue, control, next);
++				strm = &asoc->strmin[control->sinfo_stream];
+ 				sctp_queue_data_to_stream(stcb, asoc, control, abort_flag, &need_reasm_check);
+ 				if (*abort_flag) {
+ 					return (0);
+ 				}
+ 				if (need_reasm_check) {
+-					(void)sctp_deliver_reasm_check(stcb, asoc, &asoc->strmin[control->sinfo_stream], SCTP_READ_LOCK_NOT_HELD);
++					(void)sctp_deliver_reasm_check(stcb, asoc, strm, SCTP_READ_LOCK_NOT_HELD);
+ 					need_reasm_check = 0;
+ 				}
+ 			}
+@@ -2349,12 +2351,13 @@ finish_express_del:
+ 				 * control->sinfo_tsn > liste->tsn
+ 				 */
+ 				TAILQ_REMOVE(&asoc->pending_reply_queue, control, next);
++				strm = &asoc->strmin[control->sinfo_stream];
+ 				sctp_queue_data_to_stream(stcb, asoc, control, abort_flag, &need_reasm_check);
+ 				if (*abort_flag) {
+ 					return (0);
+ 				}
+ 				if (need_reasm_check) {
+-					(void)sctp_deliver_reasm_check(stcb, asoc, &asoc->strmin[control->sinfo_stream], SCTP_READ_LOCK_NOT_HELD);
++					(void)sctp_deliver_reasm_check(stcb, asoc, strm, SCTP_READ_LOCK_NOT_HELD);
+ 					need_reasm_check = 0;
+ 				}
+ 			}
diff --git a/patches/v8/.patches b/patches/v8/.patches
index 6ee0800fb5ce8..06243fedc3888 100644
--- a/patches/v8/.patches
+++ b/patches/v8/.patches
@@ -7,3 +7,32 @@ workaround_an_undefined_symbol_error.patch
 do_not_export_private_v8_symbols_on_windows.patch
 revert_cleanup_switch_offset_of_to_offsetof_where_possible.patch
 fix_build_deprecated_attirbute_for_older_msvc_versions.patch
+cherry-pick-6aa1e71fbd09.patch
+perf_make_getpositioninfoslow_faster.patch
+cherry-pick-6a4cd97d6691.patch
+cherry-pick-815b12dfb5ec.patch
+cherry-pick-8c725f7b5bbf.patch
+cherry-pick-146bd99e762b.patch
+cherry-pick-633f67caa6d0.patch
+cherry-pick-290fe9c6e245.patch
+backport_1151890.patch
+cherry-pick-63166010061d.patch
+merged_deoptimizer_stricter_checks_during_deoptimization.patch
+merged_compiler_mark_jsstoreinarrayliteral_as_needing_a_frame.patch
+cherry-pick-ffd6ff5a61b9.patch
+merged_wasm_liftoff_fix_register_usage_for_i64_addi.patch
+cherry-pick-36abafa0a316.patch
+merged_interpreter_store_accumulator_to_callee_after_optional.patch
+reland_regexp_hard-crash_on_invalid_offsets_in.patch
+regexp_throw_when_length_of_text_nodes_in_alternatives_is_too.patch
+cherry-pick-02f84c745fc0.patch
+merged_deoptimizer_fix_bug_in_optimizedframe_summarize.patch
+cherry-pick-512cd5e179f4.patch
+lts-m86_builtins_fix_array_prototype_concat_with_species.patch
+lts-m86_builtins_harden_array_prototype_concat.patch
+merged_squashed_multiple_commits.patch
+merged_compiler_fix_a_bug_in_visitspeculativeintegeradditiveop.patch
+merged_turbofan_harden_arrayprototypepop_and_arrayprototypeshift.patch
+m86-lts_compiler_fix_off-by-one_error_in_kadditivesafeinteger.patch
+merged_wasm-simd_ia32_fix_f64x2_min_max_to_use_registers.patch
+reland_compiler_fix_more_truncation_bugs_in_simplifiedlowering.patch
diff --git a/patches/v8/backport_1151890.patch b/patches/v8/backport_1151890.patch
new file mode 100644
index 0000000000000..896e7ba4f44db
--- /dev/null
+++ b/patches/v8/backport_1151890.patch
@@ -0,0 +1,23 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Andrey Belenko <anbelen@microsoft.com>
+Date: Thu, 10 Dec 2020 22:08:54 +0100
+Subject: Chromium backport: crbug.com/1151890
+
+M87-1
+Fix possibly-uninitialized leading digit on right shift
+https://chromium-review.googlesource.com/c/v8/v8/+/2565245
+CVE-2020-16042
+
+diff --git a/src/objects/bigint.cc b/src/objects/bigint.cc
+index 2f8337db979d767dd421b5cf02ded59061ac64f4..d62e4cc00c8459adecaada32599ca25c7d1ad9e4 100644
+--- a/src/objects/bigint.cc
++++ b/src/objects/bigint.cc
+@@ -1862,6 +1862,8 @@ Handle<BigInt> MutableBigInt::RightShiftByAbsolute(Isolate* isolate,
+   DCHECK_LE(result_length, length);
+   Handle<MutableBigInt> result = New(isolate, result_length).ToHandleChecked();
+   if (bits_shift == 0) {
++    // Zero out any overflow digit (see "rounding_can_overflow" above).
++    result->set_digit(result_length - 1, 0);
+     for (int i = digit_shift; i < length; i++) {
+       result->set_digit(i - digit_shift, x->digit(i));
+     }
diff --git a/patches/v8/cherry-pick-02f84c745fc0.patch b/patches/v8/cherry-pick-02f84c745fc0.patch
new file mode 100644
index 0000000000000..d6ac1746a93c3
--- /dev/null
+++ b/patches/v8/cherry-pick-02f84c745fc0.patch
@@ -0,0 +1,89 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Georg Neis <neis@chromium.org>
+Date: Mon, 12 Apr 2021 09:42:03 +0200
+Subject: Fix bug in InstructionSelector::ChangeInt32ToInt64
+
+Bug: chromium:1196683
+Change-Id: Ib4ea738b47b64edc81450583be4c80a41698c3d1
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2820971
+Commit-Queue: Georg Neis <neis@chromium.org>
+Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
+Cr-Commit-Position: refs/heads/master@{#73903}
+
+diff --git a/src/compiler/backend/x64/instruction-selector-x64.cc b/src/compiler/backend/x64/instruction-selector-x64.cc
+index ab669864954fb5335b0e98881351a43134f870a4..82d8cbd6f7ec5309461d03fb1769382d0bf19877 100644
+--- a/src/compiler/backend/x64/instruction-selector-x64.cc
++++ b/src/compiler/backend/x64/instruction-selector-x64.cc
+@@ -1270,7 +1270,9 @@ void InstructionSelector::VisitChangeInt32ToInt64(Node* node) {
+         opcode = load_rep.IsSigned() ? kX64Movsxwq : kX64Movzxwq;
+         break;
+       case MachineRepresentation::kWord32:
+-        opcode = load_rep.IsSigned() ? kX64Movsxlq : kX64Movl;
++        // ChangeInt32ToInt64 must interpret its input as a _signed_ 32-bit
++        // integer, so here we must sign-extend the loaded value in any case.
++        opcode = kX64Movsxlq;
+         break;
+       default:
+         UNREACHABLE();
+diff --git a/test/mjsunit/compiler/regress-1196683.js b/test/mjsunit/compiler/regress-1196683.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..abd7d6b2f8da45991e1e3b6c72582bc716d63efb
+--- /dev/null
++++ b/test/mjsunit/compiler/regress-1196683.js
+@@ -0,0 +1,56 @@
++// Copyright 2021 the V8 project authors. All rights reserved.
++// Use of this source code is governed by a BSD-style license that can be
++// found in the LICENSE file.
++
++// Flags: --allow-natives-syntax
++
++
++(function() {
++  const arr = new Uint32Array([2**31]);
++  function foo() {
++    return (arr[0] ^ 0) + 1;
++  }
++  %PrepareFunctionForOptimization(foo);
++  assertEquals(-(2**31) + 1, foo());
++  %OptimizeFunctionOnNextCall(foo);
++  assertEquals(-(2**31) + 1, foo());
++});
++
++
++// The remaining tests already passed without the bugfix.
++
++
++(function() {
++  const arr = new Uint16Array([2**15]);
++  function foo() {
++    return (arr[0] ^ 0) + 1;
++  }
++  %PrepareFunctionForOptimization(foo);
++  assertEquals(2**15 + 1, foo());
++  %OptimizeFunctionOnNextCall(foo);
++  assertEquals(2**15 + 1, foo());
++})();
++
++
++(function() {
++  const arr = new Uint8Array([2**7]);
++  function foo() {
++    return (arr[0] ^ 0) + 1;
++  }
++  %PrepareFunctionForOptimization(foo);
++  assertEquals(2**7 + 1, foo());
++  %OptimizeFunctionOnNextCall(foo);
++  assertEquals(2**7 + 1, foo());
++})();
++
++
++(function() {
++  const arr = new Int32Array([-(2**31)]);
++  function foo() {
++    return (arr[0] >>> 0) + 1;
++  }
++  %PrepareFunctionForOptimization(foo);
++  assertEquals(2**31 + 1, foo());
++  %OptimizeFunctionOnNextCall(foo);
++  assertEquals(2**31 + 1, foo());
++})();
diff --git a/patches/v8/cherry-pick-146bd99e762b.patch b/patches/v8/cherry-pick-146bd99e762b.patch
new file mode 100644
index 0000000000000..79ae76843b97f
--- /dev/null
+++ b/patches/v8/cherry-pick-146bd99e762b.patch
@@ -0,0 +1,299 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "ishell@chromium.org" <ishell@chromium.org>
+Date: Tue, 3 Nov 2020 12:42:43 +0100
+Subject: Merged: Squashed multiple commits.
+
+Merged: [map] Try to in-place transition during map update
+Revision: 8e3ae62d294818733a0322d8e8abd53d4e410f19
+
+Merged: [map] Skip loading the field owner before GeneralizeField
+Revision: a928f5fcc2a67c2c8d621ece48f76deb0d36637b
+
+BUG=chromium:1143772
+NOTRY=true
+NOPRESUBMIT=true
+NOTREECHECKS=true
+R=verwaest@chromium.org
+
+Change-Id: I78628cb697b21caa2098cc5948e226af5fcd020c
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2516474
+Reviewed-by: Toon Verwaest <verwaest@chromium.org>
+Cr-Commit-Position: refs/branch-heads/8.7@{#31}
+Cr-Branched-From: 0d81cd72688512abcbe1601015baee390c484a6a-refs/heads/8.7.220@{#1}
+Cr-Branched-From: 942c2ef85caef00fcf02517d049f05e9a3d4b440-refs/heads/master@{#70196}
+
+diff --git a/src/objects/map-updater.cc b/src/objects/map-updater.cc
+index e51bcfc76010a8c616dccc0af5daff5d498b7e81..b4b158749381efcf780d5c8ba07c286be6ba6b30 100644
+--- a/src/objects/map-updater.cc
++++ b/src/objects/map-updater.cc
+@@ -232,10 +232,7 @@ MapUpdater::State MapUpdater::TryReconfigureToDataFieldInplace() {
+         handle(old_descriptors_->GetFieldType(modified_descriptor_), isolate_),
+         MaybeHandle<Object>(), new_field_type_, MaybeHandle<Object>());
+   }
+-  Handle<Map> field_owner(
+-      old_map_->FindFieldOwner(isolate_, modified_descriptor_), isolate_);
+-
+-  GeneralizeField(field_owner, modified_descriptor_, new_constness_,
++  GeneralizeField(old_map_, modified_descriptor_, new_constness_,
+                   new_representation_, new_field_type_);
+   // Check that the descriptor array was updated.
+   DCHECK(old_descriptors_->GetDetails(modified_descriptor_)
+@@ -401,7 +398,13 @@ MapUpdater::State MapUpdater::FindTargetMap() {
+     }
+     Representation tmp_representation = tmp_details.representation();
+     if (!old_details.representation().fits_into(tmp_representation)) {
+-      break;
++      // Try updating the field in-place to a generalized type.
++      Representation generalized =
++          tmp_representation.generalize(old_details.representation());
++      if (!tmp_representation.CanBeInPlaceChangedTo(generalized)) {
++        break;
++      }
++      tmp_representation = generalized;
+     }
+ 
+     if (tmp_details.location() == kField) {
+diff --git a/src/objects/map.cc b/src/objects/map.cc
+index d85d5893c43798a6ee643da46267c77eacd49c0e..cc98acd0e2840da52cc84b076fdea987bf96a047 100644
+--- a/src/objects/map.cc
++++ b/src/objects/map.cc
+@@ -611,6 +611,7 @@ void Map::DeprecateTransitionTree(Isolate* isolate) {
+     transitions.GetTarget(i).DeprecateTransitionTree(isolate);
+   }
+   DCHECK(!constructor_or_backpointer().IsFunctionTemplateInfo());
++  DCHECK(CanBeDeprecated());
+   set_is_deprecated(true);
+   if (FLAG_trace_maps) {
+     LOG(isolate, MapEvent("Deprecate", handle(*this, isolate), Handle<Map>()));
+diff --git a/test/cctest/test-field-type-tracking.cc b/test/cctest/test-field-type-tracking.cc
+index a8ef298fb0d2a7da15a4b58e5088dcec7e88b426..740ae05c1eaf8104ad5c3c443b2e39429fc7fca5 100644
+--- a/test/cctest/test-field-type-tracking.cc
++++ b/test/cctest/test-field-type-tracking.cc
+@@ -1038,7 +1038,8 @@ namespace {
+ // where "p2A" and "p2B" differ only in the attributes.
+ //
+ void TestReconfigureDataFieldAttribute_GeneralizeField(
+-    const CRFTData& from, const CRFTData& to, const CRFTData& expected) {
++    const CRFTData& from, const CRFTData& to, const CRFTData& expected,
++    bool expected_deprecation) {
+   Isolate* isolate = CcTest::i_isolate();
+ 
+   Expectations expectations(isolate);
+@@ -1107,24 +1108,29 @@ void TestReconfigureDataFieldAttribute_GeneralizeField(
+   CHECK_NE(*map2, *new_map);
+   CHECK(expectations2.Check(*map2));
+ 
+-  // |map| should be deprecated and |new_map| should match new expectations.
+   for (int i = kSplitProp; i < kPropCount; i++) {
+     expectations.SetDataField(i, expected.constness, expected.representation,
+                               expected.type);
+   }
+-  CHECK(map->is_deprecated());
+-  CHECK(!code_field_type->marked_for_deoptimization());
+-  CHECK(!code_field_repr->marked_for_deoptimization());
+-  CHECK(!code_field_const->marked_for_deoptimization());
+-  CHECK_NE(*map, *new_map);
++  if (expected_deprecation) {
++    // |map| should be deprecated and |new_map| should match new expectations.
++    CHECK(map->is_deprecated());
++    CHECK(!code_field_type->marked_for_deoptimization());
++    CHECK(!code_field_repr->marked_for_deoptimization());
++    CHECK(!code_field_const->marked_for_deoptimization());
++    CHECK_NE(*map, *new_map);
+ 
+-  CHECK(!new_map->is_deprecated());
+-  CHECK(expectations.Check(*new_map));
++    CHECK(!new_map->is_deprecated());
++    CHECK(expectations.Check(*new_map));
+ 
+-  // Update deprecated |map|, it should become |new_map|.
+-  Handle<Map> updated_map = Map::Update(isolate, map);
+-  CHECK_EQ(*new_map, *updated_map);
+-  CheckMigrationTarget(isolate, *map, *updated_map);
++    // Update deprecated |map|, it should become |new_map|.
++    Handle<Map> updated_map = Map::Update(isolate, map);
++    CHECK_EQ(*new_map, *updated_map);
++    CheckMigrationTarget(isolate, *map, *updated_map);
++  } else {
++    CHECK(!map->is_deprecated());
++    CHECK(expectations.Check(*map));
++  }
+ }
+ 
+ // This test ensures that trivial field generalization (from HeapObject to
+@@ -1240,22 +1246,22 @@ TEST(ReconfigureDataFieldAttribute_GeneralizeSmiFieldToDouble) {
+   TestReconfigureDataFieldAttribute_GeneralizeField(
+       {PropertyConstness::kConst, Representation::Smi(), any_type},
+       {PropertyConstness::kConst, Representation::Double(), any_type},
+-      {PropertyConstness::kConst, Representation::Double(), any_type});
++      {PropertyConstness::kConst, Representation::Double(), any_type}, true);
+ 
+   TestReconfigureDataFieldAttribute_GeneralizeField(
+       {PropertyConstness::kConst, Representation::Smi(), any_type},
+       {PropertyConstness::kMutable, Representation::Double(), any_type},
+-      {PropertyConstness::kMutable, Representation::Double(), any_type});
++      {PropertyConstness::kMutable, Representation::Double(), any_type}, true);
+ 
+   TestReconfigureDataFieldAttribute_GeneralizeField(
+       {PropertyConstness::kMutable, Representation::Smi(), any_type},
+       {PropertyConstness::kConst, Representation::Double(), any_type},
+-      {PropertyConstness::kMutable, Representation::Double(), any_type});
++      {PropertyConstness::kMutable, Representation::Double(), any_type}, true);
+ 
+   TestReconfigureDataFieldAttribute_GeneralizeField(
+       {PropertyConstness::kMutable, Representation::Smi(), any_type},
+       {PropertyConstness::kMutable, Representation::Double(), any_type},
+-      {PropertyConstness::kMutable, Representation::Double(), any_type});
++      {PropertyConstness::kMutable, Representation::Double(), any_type}, true);
+ }
+ 
+ TEST(ReconfigureDataFieldAttribute_GeneralizeSmiFieldToTagged) {
+@@ -1270,22 +1276,26 @@ TEST(ReconfigureDataFieldAttribute_GeneralizeSmiFieldToTagged) {
+   TestReconfigureDataFieldAttribute_GeneralizeField(
+       {PropertyConstness::kConst, Representation::Smi(), any_type},
+       {PropertyConstness::kConst, Representation::HeapObject(), value_type},
+-      {PropertyConstness::kConst, Representation::Tagged(), any_type});
++      {PropertyConstness::kConst, Representation::Tagged(), any_type},
++      !FLAG_modify_field_representation_inplace);
+ 
+   TestReconfigureDataFieldAttribute_GeneralizeField(
+       {PropertyConstness::kConst, Representation::Smi(), any_type},
+       {PropertyConstness::kMutable, Representation::HeapObject(), value_type},
+-      {PropertyConstness::kMutable, Representation::Tagged(), any_type});
++      {PropertyConstness::kMutable, Representation::Tagged(), any_type},
++      !FLAG_modify_field_representation_inplace);
+ 
+   TestReconfigureDataFieldAttribute_GeneralizeField(
+       {PropertyConstness::kMutable, Representation::Smi(), any_type},
+       {PropertyConstness::kConst, Representation::HeapObject(), value_type},
+-      {PropertyConstness::kMutable, Representation::Tagged(), any_type});
++      {PropertyConstness::kMutable, Representation::Tagged(), any_type},
++      !FLAG_modify_field_representation_inplace);
+ 
+   TestReconfigureDataFieldAttribute_GeneralizeField(
+       {PropertyConstness::kMutable, Representation::Smi(), any_type},
+       {PropertyConstness::kMutable, Representation::HeapObject(), value_type},
+-      {PropertyConstness::kMutable, Representation::Tagged(), any_type});
++      {PropertyConstness::kMutable, Representation::Tagged(), any_type},
++      !FLAG_modify_field_representation_inplace);
+ }
+ 
+ TEST(ReconfigureDataFieldAttribute_GeneralizeDoubleFieldToTagged) {
+@@ -1300,22 +1310,26 @@ TEST(ReconfigureDataFieldAttribute_GeneralizeDoubleFieldToTagged) {
+   TestReconfigureDataFieldAttribute_GeneralizeField(
+       {PropertyConstness::kConst, Representation::Double(), any_type},
+       {PropertyConstness::kConst, Representation::HeapObject(), value_type},
+-      {PropertyConstness::kConst, Representation::Tagged(), any_type});
++      {PropertyConstness::kConst, Representation::Tagged(), any_type},
++      FLAG_unbox_double_fields || !FLAG_modify_field_representation_inplace);
+ 
+   TestReconfigureDataFieldAttribute_GeneralizeField(
+       {PropertyConstness::kConst, Representation::Double(), any_type},
+       {PropertyConstness::kMutable, Representation::HeapObject(), value_type},
+-      {PropertyConstness::kMutable, Representation::Tagged(), any_type});
++      {PropertyConstness::kMutable, Representation::Tagged(), any_type},
++      FLAG_unbox_double_fields || !FLAG_modify_field_representation_inplace);
+ 
+   TestReconfigureDataFieldAttribute_GeneralizeField(
+       {PropertyConstness::kMutable, Representation::Double(), any_type},
+       {PropertyConstness::kConst, Representation::HeapObject(), value_type},
+-      {PropertyConstness::kMutable, Representation::Tagged(), any_type});
++      {PropertyConstness::kMutable, Representation::Tagged(), any_type},
++      FLAG_unbox_double_fields || !FLAG_modify_field_representation_inplace);
+ 
+   TestReconfigureDataFieldAttribute_GeneralizeField(
+       {PropertyConstness::kMutable, Representation::Double(), any_type},
+       {PropertyConstness::kMutable, Representation::HeapObject(), value_type},
+-      {PropertyConstness::kMutable, Representation::Tagged(), any_type});
++      {PropertyConstness::kMutable, Representation::Tagged(), any_type},
++      FLAG_unbox_double_fields || !FLAG_modify_field_representation_inplace);
+ }
+ 
+ TEST(ReconfigureDataFieldAttribute_GeneralizeHeapObjFieldToHeapObj) {
+@@ -1401,7 +1415,8 @@ TEST(ReconfigureDataFieldAttribute_GeneralizeHeapObjectFieldToTagged) {
+   TestReconfigureDataFieldAttribute_GeneralizeField(
+       {PropertyConstness::kMutable, Representation::HeapObject(), value_type},
+       {PropertyConstness::kMutable, Representation::Smi(), any_type},
+-      {PropertyConstness::kMutable, Representation::Tagged(), any_type});
++      {PropertyConstness::kMutable, Representation::Tagged(), any_type},
++      !FLAG_modify_field_representation_inplace);
+ }
+ 
+ // Checks that given |map| is deprecated and that it updates to given |new_map|
+diff --git a/test/mjsunit/regress/regress-1143772.js b/test/mjsunit/regress/regress-1143772.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..40bc494d458afec816fd72e3fbb36b20a7942649
+--- /dev/null
++++ b/test/mjsunit/regress/regress-1143772.js
+@@ -0,0 +1,71 @@
++// Copyright 2020 the V8 project authors. All rights reserved.
++// Use of this source code is governed by a BSD-style license that can be
++// found in the LICENSE file.
++//
++// Flags: --allow-natives-syntax
++
++(function() {
++    // Only run this test if doubles are transitioned in-place to tagged.
++    let x = {};
++    x.a = 0.1;
++    let y = {};
++    y.a = {};
++    if (!%HaveSameMap(x, y)) return;
++
++    // m1: {}
++    let m1 = {};
++
++    // m2: {a:d}
++    let m2 = {};
++    assertTrue(%HaveSameMap(m2, m1));
++    m2.a = 13.37;
++
++    // m3: {a:d, b:s}
++    let m3 = {};
++    m3.a = 13.37;
++    assertTrue(%HaveSameMap(m3, m2));
++    m3.b = 1;
++
++    // m4: {a:d, b:s, c:h}
++    let m4 = {};
++    m4.a = 13.37;
++    m4.b = 1;
++    assertTrue(%HaveSameMap(m4, m3));
++    m4.c = {};
++
++    // m4_2 == m4
++    let m4_2 = {};
++    m4_2.a = 13.37;
++    m4_2.b = 1;
++    m4_2.c = {};
++    assertTrue(%HaveSameMap(m4_2, m4));
++
++    // m5: {a:d, b:d}
++    let m5 = {};
++    m5.a = 13.37;
++    assertTrue(%HaveSameMap(m5, m2));
++    m5.b = 13.37;
++    assertFalse(%HaveSameMap(m5, m3));
++
++    // At this point, Map3 and Map4 are both deprecated. Map2 transitions to
++    // Map5. Map5 is the migration target for Map3.
++    assertFalse(%HaveSameMap(m5, m3));
++
++    // m6: {a:d, b:d, c:d}
++    let m6 = {};
++    m6.a = 13.37;
++    assertTrue(%HaveSameMap(m6, m2));
++    m6.b = 13.37;
++    assertTrue(%HaveSameMap(m6, m5));
++    m6.c = 13.37
++
++    // Make m7: {a:d, b:d, c:t}
++    let m7 = m4_2;
++    assertTrue(%HaveSameMap(m7, m4));
++    // Map4 is deprecated, so this property access triggers a Map migration.
++    // With in-place map updates and no double unboxing, this should end up
++    // migrating to Map6, and updating it in-place.
++    m7.c;
++    assertFalse(%HaveSameMap(m7, m4));
++    assertTrue(%HaveSameMap(m6, m7));
++})();
diff --git a/patches/v8/cherry-pick-290fe9c6e245.patch b/patches/v8/cherry-pick-290fe9c6e245.patch
new file mode 100644
index 0000000000000..2334c940ada74
--- /dev/null
+++ b/patches/v8/cherry-pick-290fe9c6e245.patch
@@ -0,0 +1,97 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Georg Neis <neis@chromium.org>
+Date: Tue, 24 Nov 2020 14:43:35 +0100
+Subject: Merged: [compiler] Fix a bug in SimplifiedLowering
+
+Revision: ba1b2cc09ab98b51ca3828d29d19ae3b0a7c3a92
+
+BUG=chromium:1150649
+NOTRY=true
+NOPRESUBMIT=true
+NOTREECHECKS=true
+TBR=tebbi@chromium.org
+
+Change-Id: I3600d25ebc255b0e58a7db1ca8d025424f6ad3f5
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2557983
+Reviewed-by: Georg Neis <neis@chromium.org>
+Commit-Queue: Georg Neis <neis@chromium.org>
+Cr-Commit-Position: refs/branch-heads/8.7@{#55}
+Cr-Branched-From: 0d81cd72688512abcbe1601015baee390c484a6a-refs/heads/8.7.220@{#1}
+Cr-Branched-From: 942c2ef85caef00fcf02517d049f05e9a3d4b440-refs/heads/master@{#70196}
+
+diff --git a/src/compiler/simplified-lowering.cc b/src/compiler/simplified-lowering.cc
+index dd297d0b121e9997b6d4f76266c1f6e16e4ae72b..307ad5333869d4d80e59c115a486ed2f07f1798b 100644
+--- a/src/compiler/simplified-lowering.cc
++++ b/src/compiler/simplified-lowering.cc
+@@ -1411,7 +1411,6 @@ class RepresentationSelector {
+                 IsSomePositiveOrderedNumber(input1_type)
+             ? CheckForMinusZeroMode::kDontCheckForMinusZero
+             : CheckForMinusZeroMode::kCheckForMinusZero;
+-
+     NodeProperties::ChangeOp(node, simplified()->CheckedInt32Mul(mz_mode));
+   }
+ 
+@@ -1455,6 +1454,13 @@ class RepresentationSelector {
+ 
+     Type left_feedback_type = TypeOf(node->InputAt(0));
+     Type right_feedback_type = TypeOf(node->InputAt(1));
++
++    // Using Signed32 as restriction type amounts to promising there won't be
++    // signed overflow. This is incompatible with relying on a Word32
++    // truncation in order to skip the overflow check.
++    Type const restriction =
++        truncation.IsUsedAsWord32() ? Type::Any() : Type::Signed32();
++
+     // Handle the case when no int32 checks on inputs are necessary (but
+     // an overflow check is needed on the output). Note that we do not
+     // have to do any check if at most one side can be minus zero. For
+@@ -1468,7 +1474,7 @@ class RepresentationSelector {
+         right_upper.Is(Type::Signed32OrMinusZero()) &&
+         (left_upper.Is(Type::Signed32()) || right_upper.Is(Type::Signed32()))) {
+       VisitBinop<T>(node, UseInfo::TruncatingWord32(),
+-                    MachineRepresentation::kWord32, Type::Signed32());
++                    MachineRepresentation::kWord32, restriction);
+     } else {
+       // If the output's truncation is identify-zeros, we can pass it
+       // along. Moreover, if the operation is addition and we know the
+@@ -1488,8 +1494,9 @@ class RepresentationSelector {
+       UseInfo right_use = CheckedUseInfoAsWord32FromHint(hint, FeedbackSource(),
+                                                          kIdentifyZeros);
+       VisitBinop<T>(node, left_use, right_use, MachineRepresentation::kWord32,
+-                    Type::Signed32());
++                    restriction);
+     }
++
+     if (lower<T>()) {
+       if (truncation.IsUsedAsWord32() ||
+           !CanOverflowSigned32(node->op(), left_feedback_type,
+diff --git a/test/mjsunit/compiler/regress-1150649.js b/test/mjsunit/compiler/regress-1150649.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..a193481a3a20dc18dab7270a7686f6328bb79538
+--- /dev/null
++++ b/test/mjsunit/compiler/regress-1150649.js
+@@ -0,0 +1,24 @@
++// Copyright 2020 the V8 project authors. All rights reserved.
++// Use of this source code is governed by a BSD-style license that can be
++// found in the LICENSE file.
++
++// Flags: --allow-natives-syntax
++
++function foo(a) {
++  var y = 0x7fffffff;  // 2^31 - 1
++
++  // Widen the static type of y (this condition never holds).
++  if (a == NaN) y = NaN;
++
++  // The next condition holds only in the warmup run. It leads to Smi
++  // (SignedSmall) feedback being collected for the addition below.
++  if (a) y = -1;
++
++  const z = (y + 1)|0;
++  return z < 0;
++}
++
++%PrepareFunctionForOptimization(foo);
++assertFalse(foo(true));
++%OptimizeFunctionOnNextCall(foo);
++assertTrue(foo(false));
diff --git a/patches/v8/cherry-pick-36abafa0a316.patch b/patches/v8/cherry-pick-36abafa0a316.patch
new file mode 100644
index 0000000000000..32ff6c35da309
--- /dev/null
+++ b/patches/v8/cherry-pick-36abafa0a316.patch
@@ -0,0 +1,71 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Deepti Gandluri <gdeepti@chromium.org>
+Date: Wed, 27 Jan 2021 22:19:44 -0800
+Subject: PostMessage of Memory.buffer should throw
+
+PostMessage of an ArrayBuffer that is not detachable should result
+in a DataCloneError.
+
+TBR=gdeepti@chromium.org
+
+(cherry picked from commit dfcf1e86fac0a7b067caf8fdfc13eaf3e3f445e4)
+
+Bug: chromium:1170176, chromium:961059
+No-Try: true
+No-Presubmit: true
+No-Tree-Checks: true
+Change-Id: Ife852df032841b7001375acd5e101d614c4b0771
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2674169
+Reviewed-by: Zhi An Ng <zhin@chromium.org>
+Commit-Queue: Zhi An Ng <zhin@chromium.org>
+Cr-Commit-Position: refs/branch-heads/8.8@{#30}
+Cr-Branched-From: 2dbcdc105b963ee2501c82139eef7e0603977ff0-refs/heads/8.8.278@{#1}
+Cr-Branched-From: 366d30c99049b3f1c673f8a93deb9f879d0fa9f0-refs/heads/master@{#71094}
+
+diff --git a/src/common/message-template.h b/src/common/message-template.h
+index cf8d66b8bb60d307faab0df78b19fb86f1ff51be..2490a154457530b12daaeb7f01bd88cd9ea9582f 100644
+--- a/src/common/message-template.h
++++ b/src/common/message-template.h
+@@ -567,6 +567,8 @@ namespace internal {
+   T(DataCloneErrorOutOfMemory, "Data cannot be cloned, out of memory.")        \
+   T(DataCloneErrorDetachedArrayBuffer,                                         \
+     "An ArrayBuffer is detached and could not be cloned.")                     \
++  T(DataCloneErrorNonDetachableArrayBuffer,                                    \
++    "ArrayBuffer is not detachable and could not be cloned.")                  \
+   T(DataCloneErrorSharedArrayBufferTransferred,                                \
+     "A SharedArrayBuffer could not be cloned. SharedArrayBuffer must not be "  \
+     "transferred.")                                                            \
+diff --git a/src/objects/value-serializer.cc b/src/objects/value-serializer.cc
+index 58b1db674928577e5ad8cb54d78d6061db0b2f2f..9e79f9ba434193db78dd185fd4d47aa829a44a4c 100644
+--- a/src/objects/value-serializer.cc
++++ b/src/objects/value-serializer.cc
+@@ -860,6 +860,11 @@ Maybe<bool> ValueSerializer::WriteJSArrayBuffer(
+     WriteVarint(index.FromJust());
+     return ThrowIfOutOfMemory();
+   }
++  if (!array_buffer->is_detachable()) {
++    ThrowDataCloneError(
++        MessageTemplate::kDataCloneErrorNonDetachableArrayBuffer);
++    return Nothing<bool>();
++  }
+ 
+   uint32_t* transfer_entry = array_buffer_transfer_map_.Find(array_buffer);
+   if (transfer_entry) {
+diff --git a/test/mjsunit/wasm/worker-memory.js b/test/mjsunit/wasm/worker-memory.js
+index c5b99ede7e28364bbbe31165dfd8b8449a718137..bf5430f7139815c229e641eb6d40725b066035c5 100644
+--- a/test/mjsunit/wasm/worker-memory.js
++++ b/test/mjsunit/wasm/worker-memory.js
+@@ -11,6 +11,13 @@
+   assertThrows(() => worker.postMessage(memory), Error);
+ })();
+ 
++(function TestPostMessageUnsharedMemoryBuffer() {
++  let worker = new Worker('', {type: 'string'});
++  let memory = new WebAssembly.Memory({initial: 1, maximum: 2});
++
++  assertThrows(() => worker.postMessage(memory.buffer), Error);
++})();
++
+ // Can't use assert in a worker.
+ let workerHelpers =
+   `function assertTrue(value, msg) {
diff --git a/patches/v8/cherry-pick-512cd5e179f4.patch b/patches/v8/cherry-pick-512cd5e179f4.patch
new file mode 100644
index 0000000000000..f443fe88936a4
--- /dev/null
+++ b/patches/v8/cherry-pick-512cd5e179f4.patch
@@ -0,0 +1,109 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Georg Neis <neis@chromium.org>
+Date: Wed, 14 Apr 2021 13:19:44 +0200
+Subject: Merged: [compiler] Fix bug in
+ RepresentationChanger::GetWord32RepresentationFor
+
+Revision: fd29e246f65a7cee130e72cd10f618f3b82af232
+
+BUG=chromium:1195777
+NOTRY=true
+NOPRESUBMIT=true
+NOTREECHECKS=true
+R=nicohartmann@chromium.org
+
+Change-Id: I0400b3ae5736ef86dbeae558d15bfcca2e9f351a
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2826114
+Commit-Queue: Georg Neis <neis@chromium.org>
+Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
+Cr-Commit-Position: refs/branch-heads/9.0@{#34}
+Cr-Branched-From: bd0108b4c88e0d6f2350cb79b5f363fbd02f3eb7-refs/heads/9.0.257@{#1}
+Cr-Branched-From: 349bcc6a075411f1a7ce2d866c3dfeefc2efa39d-refs/heads/master@{#73001}
+
+diff --git a/src/compiler/representation-change.cc b/src/compiler/representation-change.cc
+index 5967d1005e5d859bfc873bda3cde2b2b26667d31..7dca85da59f074171bbaf00394af03c4dce33b61 100644
+--- a/src/compiler/representation-change.cc
++++ b/src/compiler/representation-change.cc
+@@ -949,10 +949,10 @@ Node* RepresentationChanger::GetWord32RepresentationFor(
+     return node;
+   } else if (output_rep == MachineRepresentation::kWord64) {
+     if (output_type.Is(Type::Signed32()) ||
+-        output_type.Is(Type::Unsigned32())) {
+-      op = machine()->TruncateInt64ToInt32();
+-    } else if (output_type.Is(cache_->kSafeInteger) &&
+-               use_info.truncation().IsUsedAsWord32()) {
++        (output_type.Is(Type::Unsigned32()) &&
++         use_info.type_check() == TypeCheckKind::kNone) ||
++        (output_type.Is(cache_->kSafeInteger) &&
++         use_info.truncation().IsUsedAsWord32())) {
+       op = machine()->TruncateInt64ToInt32();
+     } else if (use_info.type_check() == TypeCheckKind::kSignedSmall ||
+                use_info.type_check() == TypeCheckKind::kSigned32 ||
+diff --git a/test/mjsunit/compiler/regress-1195777.js b/test/mjsunit/compiler/regress-1195777.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..b122f4f0169af573723d4318b9f1127c857c9e35
+--- /dev/null
++++ b/test/mjsunit/compiler/regress-1195777.js
+@@ -0,0 +1,62 @@
++// Copyright 2021 the V8 project authors. All rights reserved.
++// Use of this source code is governed by a BSD-style license that can be
++// found in the LICENSE file.
++
++// Flags: --allow-natives-syntax
++
++
++(function() {
++  function foo(b) {
++    let y = (new Date(42)).getMilliseconds();
++    let x = -1;
++    if (b) x = 0xFFFF_FFFF;
++    return y < Math.max(1 << y, x, 1 + y);
++  }
++  assertTrue(foo(true));
++  %PrepareFunctionForOptimization(foo);
++  assertTrue(foo(false));
++  %OptimizeFunctionOnNextCall(foo);
++  assertTrue(foo(true));
++})();
++
++
++(function() {
++  function foo(b) {
++    let x = 0;
++    if (b) x = -1;
++    return x == Math.max(-1, x >>> Infinity);
++  }
++  assertFalse(foo(true));
++  %PrepareFunctionForOptimization(foo);
++  assertTrue(foo(false));
++  %OptimizeFunctionOnNextCall(foo);
++  assertFalse(foo(true));
++})();
++
++
++(function() {
++  function foo(b) {
++    let x = -1;
++    if (b) x = 0xFFFF_FFFF;
++    return -1 < Math.max(0, x, -1);
++  }
++  assertTrue(foo(true));
++  %PrepareFunctionForOptimization(foo);
++  assertTrue(foo(false));
++  %OptimizeFunctionOnNextCall(foo);
++  assertTrue(foo(true));
++})();
++
++
++(function() {
++  function foo(b) {
++    let x = 0x7FFF_FFFF;
++    if (b) x = 0;
++    return 0 < (Math.max(-5 >>> x, -5) % -5);
++  }
++  assertTrue(foo(true));
++  %PrepareFunctionForOptimization(foo);
++  assertTrue(foo(false));
++  %OptimizeFunctionOnNextCall(foo);
++  assertTrue(foo(true));
++})();
diff --git a/patches/v8/cherry-pick-63166010061d.patch b/patches/v8/cherry-pick-63166010061d.patch
new file mode 100644
index 0000000000000..abebe720b5439
--- /dev/null
+++ b/patches/v8/cherry-pick-63166010061d.patch
@@ -0,0 +1,122 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Clemens Backes <clemensb@chromium.org>
+Date: Tue, 1 Dec 2020 19:10:26 +0100
+Subject: Release temp registers after use
+
+The {ParallelRegisterMove} at the end of {AtomicLoad} might need a
+temporary scratch register for spilling values to the stack. Make sure
+that one is available by giving up the scratch register used for the
+address of the atomic access.
+
+R=ahaas@chromium.org
+
+Bug: chromium:1153442
+Change-Id: I267c43e2193662c420f96f6683ebd4bbb0e1bca3
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2566759
+Reviewed-by: Andreas Haas <ahaas@chromium.org>
+Commit-Queue: Clemens Backes <clemensb@chromium.org>
+Cr-Commit-Position: refs/heads/master@{#71564}
+
+diff --git a/src/wasm/baseline/arm/liftoff-assembler-arm.h b/src/wasm/baseline/arm/liftoff-assembler-arm.h
+index 4a9cffb9728405f36804d660744ed15d20a27ab0..94672036de4e6c2592b2dc9fed1dc388bf9e40a0 100644
+--- a/src/wasm/baseline/arm/liftoff-assembler-arm.h
++++ b/src/wasm/baseline/arm/liftoff-assembler-arm.h
+@@ -945,11 +945,13 @@ void LiftoffAssembler::AtomicLoad(LiftoffRegister dst, Register src_addr,
+   if (cache_state()->is_used(LiftoffRegister(dst_high))) {
+     SpillRegister(LiftoffRegister(dst_high));
+   }
+-  UseScratchRegisterScope temps(this);
+-  Register actual_addr = liftoff::CalculateActualAddress(
+-      this, &temps, src_addr, offset_reg, offset_imm);
+-  ldrexd(dst_low, dst_high, actual_addr);
+-  dmb(ISH);
++  {
++    UseScratchRegisterScope temps(this);
++    Register actual_addr = liftoff::CalculateActualAddress(
++        this, &temps, src_addr, offset_reg, offset_imm);
++    ldrexd(dst_low, dst_high, actual_addr);
++    dmb(ISH);
++  }
+ 
+   LiftoffAssembler::ParallelRegisterMoveTuple reg_moves[]{
+       {dst, LiftoffRegister::ForPair(dst_low, dst_high), kWasmI64}};
+@@ -1261,12 +1263,10 @@ void LiftoffAssembler::Move(DoubleRegister dst, DoubleRegister src,
+ }
+ 
+ void LiftoffAssembler::Spill(int offset, LiftoffRegister reg, ValueType type) {
+-#ifdef DEBUG
+   // The {str} instruction needs a temp register when the immediate in the
+   // provided MemOperand does not fit into 12 bits. This happens for large stack
+   // frames. This DCHECK checks that the temp register is available when needed.
+   DCHECK(UseScratchRegisterScope{this}.CanAcquire());
+-#endif
+   DCHECK_LT(0, offset);
+   RecordUsedSpillOffset(offset);
+   MemOperand dst(fp, -offset);
+diff --git a/test/mjsunit/regress/wasm/regress-1153442.js b/test/mjsunit/regress/wasm/regress-1153442.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..989da11a25b85f9b3a9905e6506e56c3e8c82654
+--- /dev/null
++++ b/test/mjsunit/regress/wasm/regress-1153442.js
+@@ -0,0 +1,61 @@
++// Copyright 2020 the V8 project authors. All rights reserved.
++// Use of this source code is governed by a BSD-style license that can be
++// found in the LICENSE file.
++
++// Flags: --experimental-wasm-threads
++
++load('test/mjsunit/wasm/wasm-module-builder.js');
++
++const builder = new WasmModuleBuilder();
++builder.addMemory(1, 1, false, true);
++builder.addGlobal(kWasmI32, 1);
++builder.addGlobal(kWasmI32, 1);
++builder.addType(makeSig([kWasmI32, kWasmI64, kWasmI32], []));
++// Generate function 1 (out of 1).
++builder.addFunction(undefined, 0 /* sig */)
++  .addLocals(kWasmI32, 10)
++  .addBodyWithEnd([
++// signature: v_ili
++// body:
++kExprI32Const, 0x00,  // i32.const
++kExprLocalSet, 0x04,  // local.set
++kExprI32Const, 0x01,  // i32.const
++kExprLocalSet, 0x05,  // local.set
++kExprBlock, kWasmStmt,  // block @11
++  kExprBr, 0x00,  // br depth=0
++  kExprEnd,  // end @15
++kExprGlobalGet, 0x01,  // global.get
++kExprLocalSet, 0x03,  // local.set
++kExprLocalGet, 0x03,  // local.get
++kExprI32Const, 0x01,  // i32.const
++kExprI32Sub,  // i32.sub
++kExprLocalSet, 0x06,  // local.set
++kExprI64Const, 0x01,  // i64.const
++kExprLocalSet, 0x01,  // local.set
++kExprI32Const, 0x00,  // i32.const
++kExprI32Eqz,  // i32.eqz
++kExprLocalSet, 0x07,  // local.set
++kExprBlock, kWasmStmt,  // block @36
++  kExprBr, 0x00,  // br depth=0
++  kExprEnd,  // end @40
++kExprGlobalGet, 0x01,  // global.get
++kExprLocalSet, 0x08,  // local.set
++kExprI32Const, 0x01,  // i32.const
++kExprI32Const, 0x01,  // i32.const
++kExprI32Sub,  // i32.sub
++kExprLocalSet, 0x09,  // local.set
++kExprLocalGet, 0x00,  // local.get
++kExprLocalSet, 0x0a,  // local.set
++kExprGlobalGet, 0x00,  // global.get
++kExprLocalSet, 0x0b,  // local.set
++kExprI32Const, 0x00,  // i32.const
++kExprI32Const, 0x0f,  // i32.const
++kExprI32And,  // i32.and
++kExprLocalSet, 0x0c,  // local.set
++kExprI32Const, 0x00,  // i32.const
++kAtomicPrefix, kExprI64AtomicLoad, 0x03, 0x04,  // i64.atomic.load64
++kExprDrop,  // drop
++kExprUnreachable,  // unreachable
++kExprEnd,  // end @75
++]);
++builder.toModule();
diff --git a/patches/v8/cherry-pick-633f67caa6d0.patch b/patches/v8/cherry-pick-633f67caa6d0.patch
new file mode 100644
index 0000000000000..5c77fa00263de
--- /dev/null
+++ b/patches/v8/cherry-pick-633f67caa6d0.patch
@@ -0,0 +1,50 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Andreas Haas <ahaas@chromium.org>
+Date: Wed, 28 Oct 2020 07:55:24 +0100
+Subject: Add missing HasValue check in BitfieldCheck::Detect
+
+The value of a node was accessed without prior HasValue check. With
+WebAssembly this node is not guaranteed to be a value.
+
+R=mslekova@chromium.org
+
+Change-Id: I62170183f3940a04b0550dfbb78cb49d2f5d7f72
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2504250
+Reviewed-by: Maya Lekova <mslekova@chromium.org>
+Commit-Queue: Andreas Haas <ahaas@chromium.org>
+Cr-Commit-Position: refs/heads/master@{#70833}
+
+diff --git a/src/compiler/machine-operator-reducer.cc b/src/compiler/machine-operator-reducer.cc
+index 127c7681099537c453a9ec08bc0af1d896e9717c..dbe4eae299468a33768656ef17836c04bbcfae7e 100644
+--- a/src/compiler/machine-operator-reducer.cc
++++ b/src/compiler/machine-operator-reducer.cc
+@@ -1616,7 +1616,7 @@ struct BitfieldCheck {
+       Uint32BinopMatcher eq(node);
+       if (eq.left().IsWord32And()) {
+         Uint32BinopMatcher mand(eq.left().node());
+-        if (mand.right().HasValue()) {
++        if (mand.right().HasValue() && eq.right().HasValue()) {
+           BitfieldCheck result{mand.left().node(), mand.right().Value(),
+                                eq.right().Value(), false};
+           if (mand.left().IsTruncateInt64ToInt32()) {
+diff --git a/test/unittests/compiler/machine-operator-reducer-unittest.cc b/test/unittests/compiler/machine-operator-reducer-unittest.cc
+index 53342cbd212e561bc98cd559b139696fac291143..d789c5646bde8be423dabed3a64417019067ab60 100644
+--- a/test/unittests/compiler/machine-operator-reducer-unittest.cc
++++ b/test/unittests/compiler/machine-operator-reducer-unittest.cc
+@@ -837,6 +837,16 @@ TEST_F(MachineOperatorReducerTest, Word32AndWithBitFields) {
+   }
+ }
+ 
++TEST_F(MachineOperatorReducerTest, Word32AndWithIncorrectBitField) {
++  Reduction const r = Reduce(graph()->NewNode(
++      machine()->Word32And(), Parameter(0),
++      graph()->NewNode(machine()->Word32Equal(),
++                       graph()->NewNode(machine()->Word32And(), Parameter(0),
++                                        Int32Constant(4)),
++                       Parameter(0))));
++  ASSERT_FALSE(r.Changed());
++}
++
+ // -----------------------------------------------------------------------------
+ // Word32Or
+ 
diff --git a/patches/v8/cherry-pick-6a4cd97d6691.patch b/patches/v8/cherry-pick-6a4cd97d6691.patch
new file mode 100644
index 0000000000000..3c79004dc982f
--- /dev/null
+++ b/patches/v8/cherry-pick-6a4cd97d6691.patch
@@ -0,0 +1,90 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Leszek Swirski <leszeks@chromium.org>
+Date: Wed, 30 Sep 2020 15:19:13 +0200
+Subject: Merged: [parser] Fix AST func reindexing for function fields
+
+AST reindexing has to skip visiting fields that are already in the
+member initializer, as they will have already been visited when
+visiting said initializer. This is the case for private fields and
+fields with computed names.
+
+However, the reindexer was incorrectly assuming that all properties
+with a FunctionLiteral value are methods (and thus not fields, and
+can safely be visited). This is not the case for fields with
+function expression values.
+
+Now, we correctly use the class property's "kind" when making this
+visitation decision.
+
+(cherry picked from commit a769ea7a4462115579ba87bc16fbffbae01310c1)
+
+Bug: chromium:1132111
+Tbr: leszeks@chromium.org
+No-Try: true
+No-Presubmit: true
+No-Tree-Checks: true
+Change-Id: I33ac5664bb5334e964d351de1ba7e2c57f3398f8
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2465056
+Commit-Queue: Adam Klein <adamk@chromium.org>
+Reviewed-by: Adam Klein <adamk@chromium.org>
+Cr-Commit-Position: refs/branch-heads/8.6@{#24}
+Cr-Branched-From: a64aed2333abf49e494d2a5ce24bbd14fff19f60-refs/heads/8.6.395@{#1}
+Cr-Branched-From: a626bc036236c9bf92ac7b87dc40c9e538b087e3-refs/heads/master@{#69472}
+
+diff --git a/src/ast/ast-function-literal-id-reindexer.cc b/src/ast/ast-function-literal-id-reindexer.cc
+index b583b5e4214ad469848844923ef03dba06b6554c..8c9318bfe7475d3c9b8cc2bdb50786b9118fd4a0 100644
+--- a/src/ast/ast-function-literal-id-reindexer.cc
++++ b/src/ast/ast-function-literal-id-reindexer.cc
+@@ -54,10 +54,10 @@ void AstFunctionLiteralIdReindexer::VisitClassLiteral(ClassLiteral* expr) {
+     // Private fields have their key and value present in
+     // instance_members_initializer_function, so they will
+     // already have been visited.
+-    if (prop->value()->IsFunctionLiteral()) {
+-      Visit(prop->value());
+-    } else {
++    if (prop->kind() == ClassLiteralProperty::Kind::FIELD) {
+       CheckVisited(prop->value());
++    } else {
++      Visit(prop->value());
+     }
+   }
+   ZonePtrList<ClassLiteral::Property>* props = expr->public_members();
+@@ -67,7 +67,8 @@ void AstFunctionLiteralIdReindexer::VisitClassLiteral(ClassLiteral* expr) {
+     // Public fields with computed names have their key
+     // and value present in instance_members_initializer_function, so they will
+     // already have been visited.
+-    if (prop->is_computed_name() && !prop->value()->IsFunctionLiteral()) {
++    if (prop->is_computed_name() &&
++        prop->kind() == ClassLiteralProperty::Kind::FIELD) {
+       if (!prop->key()->IsLiteral()) {
+         CheckVisited(prop->key());
+       }
+diff --git a/test/mjsunit/regress/regress-1132111.js b/test/mjsunit/regress/regress-1132111.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..1dd1b58806862aaf6c0847f107377095105dcab1
+--- /dev/null
++++ b/test/mjsunit/regress/regress-1132111.js
+@@ -0,0 +1,23 @@
++// Copyright 2020 the V8 project authors. All rights reserved.
++// Use of this source code is governed by a BSD-style license that can be
++// found in the LICENSE file.
++
++// Public function field with computed name
++eval(`
++  buggy = ((bug = new class { [0] = x => 1337.0; }) => bug);
++`);
++
++// Public method with computed name
++eval(`
++  buggy = ((bug = new class { [0](x) { return 1337.0}; }) => bug);
++`);
++
++// Private function field with computed name
++eval(`
++  buggy = ((bug = new class { #foo = x => 1337.0; }) => bug);
++`);
++
++// Private method with computed name
++eval(`
++  buggy = ((bug = new class { #foo(x) { return 1337.0; } }) => bug);
++`);
diff --git a/patches/v8/cherry-pick-6aa1e71fbd09.patch b/patches/v8/cherry-pick-6aa1e71fbd09.patch
new file mode 100644
index 0000000000000..20711788528a2
--- /dev/null
+++ b/patches/v8/cherry-pick-6aa1e71fbd09.patch
@@ -0,0 +1,70 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Andreas Haas <ahaas@chromium.org>
+Date: Tue, 25 Aug 2020 11:46:46 +0200
+Subject: Merged: [wasm][streaming] Avoid aborting the stream after it finished
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+With WebAssembly streaming compilation it is possible that FinishStream
+indirectly calls AbortStream. This had the effect that while
+FinishStream fulfilled the promise, AbortStream disposed the promise
+by removing the compile job from the wasm engine and thereby deallocated
+AsyncCompileJob and all the state that belongs to it. Without that
+state, FinishStream could not finish fulfilling the promise correctly.
+
+With this CL the streaming decoder remembers that the stream has
+already been finished. When the stream has been finished, all calls to
+Abort get ignored.
+
+The regression test for this issue requires the Chrome embedding, see
+https://crrev.com/c/2368359
+
+R=​clemensb@chromium.org
+NOTRY=true
+NOPRESUBMIT=true
+NOTREECHECKS=true
+
+(cherry picked from commit 32dd54709cd2ecdfc553aff3f7ab5377ff7c91a2)
+
+Bug: chromium:1117258
+Change-Id: Ifc28a1ee38c228b051c4d7d85b305fe2a721fa1f
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2367858
+Commit-Queue: Andreas Haas <ahaas@chromium.org>
+Reviewed-by: Clemens Backes <clemensb@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#69549}
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2465830
+Cr-Commit-Position: refs/branch-heads/8.6@{#22}
+Cr-Branched-From: a64aed2333abf49e494d2a5ce24bbd14fff19f60-refs/heads/8.6.395@{#1}
+Cr-Branched-From: a626bc036236c9bf92ac7b87dc40c9e538b087e3-refs/heads/master@{#69472}
+
+diff --git a/src/wasm/streaming-decoder.cc b/src/wasm/streaming-decoder.cc
+index eb2978070074981f20b0e2f27401bce39e0029d9..88f40b9a00df75231b9938a4691c1330d047b070 100644
+--- a/src/wasm/streaming-decoder.cc
++++ b/src/wasm/streaming-decoder.cc
+@@ -214,6 +214,7 @@ class V8_EXPORT_PRIVATE AsyncStreamingDecoder : public StreamingDecoder {
+   bool code_section_processed_ = false;
+   uint32_t module_offset_ = 0;
+   size_t total_size_ = 0;
++  bool stream_finished_ = false;
+ 
+   // We need wire bytes in an array for deserializing cached modules.
+   std::vector<uint8_t> wire_bytes_for_deserializing_;
+@@ -258,6 +259,8 @@ size_t AsyncStreamingDecoder::DecodingState::ReadBytes(
+ 
+ void AsyncStreamingDecoder::Finish() {
+   TRACE_STREAMING("Finish\n");
++  DCHECK(!stream_finished_);
++  stream_finished_ = true;
+   if (!ok()) return;
+ 
+   if (deserializing()) {
+@@ -298,6 +301,8 @@ void AsyncStreamingDecoder::Finish() {
+ 
+ void AsyncStreamingDecoder::Abort() {
+   TRACE_STREAMING("Abort\n");
++  if (stream_finished_) return;
++  stream_finished_ = true;
+   if (!ok()) return;  // Failed already.
+   processor_->OnAbort();
+   Fail();
diff --git a/patches/v8/cherry-pick-815b12dfb5ec.patch b/patches/v8/cherry-pick-815b12dfb5ec.patch
new file mode 100644
index 0000000000000..3c47b51ee36bd
--- /dev/null
+++ b/patches/v8/cherry-pick-815b12dfb5ec.patch
@@ -0,0 +1,819 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "ishell@chromium.org" <ishell@chromium.org>
+Date: Tue, 27 Oct 2020 13:13:08 +0100
+Subject: Merged: [runtime] Fix sorted order of DescriptorArray entries
+
+Revision: 518d67ad652fc24b7eb03e48bb342f952d4ccf74
+
+BUG=chromium:1133527
+NOTRY=true
+NOPRESUBMIT=true
+NOTREECHECKS=true
+R=verwaest@chromium.org
+
+Change-Id: I10831b27c5c10b9a967e47a5fd08f806ef5d306d
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2502328
+Reviewed-by: Toon Verwaest <verwaest@chromium.org>
+Cr-Commit-Position: refs/branch-heads/8.6@{#34}
+Cr-Branched-From: a64aed2333abf49e494d2a5ce24bbd14fff19f60-refs/heads/8.6.395@{#1}
+Cr-Branched-From: a626bc036236c9bf92ac7b87dc40c9e538b087e3-refs/heads/master@{#69472}
+
+diff --git a/src/codegen/code-stub-assembler.cc b/src/codegen/code-stub-assembler.cc
+index 6e9b817759dbccd314fec13a911fee40d0b92b80..da0cb08023d1cade3fcb6ef0fb0f5ecaacd125ba 100644
+--- a/src/codegen/code-stub-assembler.cc
++++ b/src/codegen/code-stub-assembler.cc
+@@ -1772,12 +1772,13 @@ TNode<IntPtrT> CodeStubAssembler::LoadJSReceiverIdentityHash(
+   return var_hash.value();
+ }
+ 
+-TNode<Uint32T> CodeStubAssembler::LoadNameHashField(SloppyTNode<Name> name) {
+-  CSA_ASSERT(this, IsName(name));
+-  return LoadObjectField<Uint32T>(name, Name::kHashFieldOffset);
++TNode<Uint32T> CodeStubAssembler::LoadNameHashAssumeComputed(TNode<Name> name) {
++  TNode<Uint32T> hash_field = LoadNameHashField(name);
++  CSA_ASSERT(this, IsClearWord32(hash_field, Name::kHashNotComputedMask));
++  return Unsigned(Word32Shr(hash_field, Int32Constant(Name::kHashShift)));
+ }
+ 
+-TNode<Uint32T> CodeStubAssembler::LoadNameHash(SloppyTNode<Name> name,
++TNode<Uint32T> CodeStubAssembler::LoadNameHash(TNode<Name> name,
+                                                Label* if_hash_not_computed) {
+   TNode<Uint32T> hash_field = LoadNameHashField(name);
+   if (if_hash_not_computed != nullptr) {
+@@ -8026,7 +8027,7 @@ void CodeStubAssembler::LookupBinary(TNode<Name> unique_name,
+   TNode<Uint32T> limit =
+       Unsigned(Int32Sub(NumberOfEntries<Array>(array), Int32Constant(1)));
+   TVARIABLE(Uint32T, var_high, limit);
+-  TNode<Uint32T> hash = LoadNameHashField(unique_name);
++  TNode<Uint32T> hash = LoadNameHashAssumeComputed(unique_name);
+   CSA_ASSERT(this, Word32NotEqual(hash, Int32Constant(0)));
+ 
+   // Assume non-empty array.
+@@ -8044,7 +8045,7 @@ void CodeStubAssembler::LookupBinary(TNode<Name> unique_name,
+     TNode<Uint32T> sorted_key_index = GetSortedKeyIndex<Array>(array, mid);
+     TNode<Name> mid_name = GetKey<Array>(array, sorted_key_index);
+ 
+-    TNode<Uint32T> mid_hash = LoadNameHashField(mid_name);
++    TNode<Uint32T> mid_hash = LoadNameHashAssumeComputed(mid_name);
+ 
+     Label mid_greater(this), mid_less(this), merge(this);
+     Branch(Uint32GreaterThanOrEqual(mid_hash, hash), &mid_greater, &mid_less);
+@@ -8071,7 +8072,7 @@ void CodeStubAssembler::LookupBinary(TNode<Name> unique_name,
+     TNode<Uint32T> sort_index =
+         GetSortedKeyIndex<Array>(array, var_low.value());
+     TNode<Name> current_name = GetKey<Array>(array, sort_index);
+-    TNode<Uint32T> current_hash = LoadNameHashField(current_name);
++    TNode<Uint32T> current_hash = LoadNameHashAssumeComputed(current_name);
+     GotoIf(Word32NotEqual(current_hash, hash), if_not_found);
+     Label next(this);
+     GotoIf(TaggedNotEqual(current_name, unique_name), &next);
+diff --git a/src/codegen/code-stub-assembler.h b/src/codegen/code-stub-assembler.h
+index a13699939942dd3260e98dff678566be2c8b4346..99a30c9ad95d4e36e25004f93472cf73130e9cdc 100644
+--- a/src/codegen/code-stub-assembler.h
++++ b/src/codegen/code-stub-assembler.h
+@@ -1322,13 +1322,12 @@ class V8_EXPORT_PRIVATE CodeStubAssembler
+   // Check if the map is set for slow properties.
+   TNode<BoolT> IsDictionaryMap(SloppyTNode<Map> map);
+ 
+-  // Load the hash field of a name as an uint32 value.
+-  TNode<Uint32T> LoadNameHashField(SloppyTNode<Name> name);
+-  // Load the hash value of a name as an uint32 value.
++  // Load the Name::hash() value of a name as an uint32 value.
+   // If {if_hash_not_computed} label is specified then it also checks if
+   // hash is actually computed.
+-  TNode<Uint32T> LoadNameHash(SloppyTNode<Name> name,
++  TNode<Uint32T> LoadNameHash(TNode<Name> name,
+                               Label* if_hash_not_computed = nullptr);
++  TNode<Uint32T> LoadNameHashAssumeComputed(TNode<Name> name);
+ 
+   // Load length field of a String object as Smi value.
+   TNode<Smi> LoadStringLengthAsSmi(TNode<String> string);
+diff --git a/src/diagnostics/objects-debug.cc b/src/diagnostics/objects-debug.cc
+index f94dd8a3c6a148ee53d49eae668ca7e3b85e41ff..185cf31d8cfda1207d0963904fb719f19c1e95c8 100644
+--- a/src/diagnostics/objects-debug.cc
++++ b/src/diagnostics/objects-debug.cc
+@@ -1662,12 +1662,13 @@ bool DescriptorArray::IsSortedNoDuplicates() {
+   uint32_t current = 0;
+   for (int i = 0; i < number_of_descriptors(); i++) {
+     Name key = GetSortedKey(i);
++    CHECK(key.HasHashCode());
+     if (key == current_key) {
+       Print();
+       return false;
+     }
+     current_key = key;
+-    uint32_t hash = GetSortedKey(i).Hash();
++    uint32_t hash = key.hash();
+     if (hash < current) {
+       Print();
+       return false;
+@@ -1685,7 +1686,8 @@ bool TransitionArray::IsSortedNoDuplicates() {
+ 
+   for (int i = 0; i < number_of_transitions(); i++) {
+     Name key = GetSortedKey(i);
+-    uint32_t hash = key.Hash();
++    CHECK(key.HasHashCode());
++    uint32_t hash = key.hash();
+     PropertyKind kind = kData;
+     PropertyAttributes attributes = NONE;
+     if (!TransitionsAccessor::IsSpecialTransition(key.GetReadOnlyRoots(),
+diff --git a/src/objects/descriptor-array-inl.h b/src/objects/descriptor-array-inl.h
+index d9e3408dd96aed4f798176a38ae4f0eade1c6c89..a7c6443a05fa7debc1841fb259ff1bc98ba7e184 100644
+--- a/src/objects/descriptor-array-inl.h
++++ b/src/objects/descriptor-array-inl.h
+@@ -228,7 +228,7 @@ void DescriptorArray::Append(Descriptor* desc) {
+ 
+   for (insertion = descriptor_number; insertion > 0; --insertion) {
+     Name key = GetSortedKey(insertion - 1);
+-    if (key.Hash() <= hash) break;
++    if (key.hash() <= hash) break;
+     SetSortedKey(insertion, GetSortedKeyIndex(insertion - 1));
+   }
+ 
+diff --git a/src/objects/descriptor-array.h b/src/objects/descriptor-array.h
+index f68948192900d901743548943e1df82567ade2ba..890863d5a01268756d5aa94037925120652cb1bd 100644
+--- a/src/objects/descriptor-array.h
++++ b/src/objects/descriptor-array.h
+@@ -113,7 +113,7 @@ class DescriptorArray
+       int slack = 0);
+ 
+   // Sort the instance descriptors by the hash codes of their keys.
+-  void Sort();
++  V8_EXPORT_PRIVATE void Sort();
+ 
+   // Search the instance descriptors for given name. {concurrent_search} signals
+   // if we are doing the search on a background thread. If so, we will sacrifice
+diff --git a/src/objects/fixed-array-inl.h b/src/objects/fixed-array-inl.h
+index a49483ebc6490dafdf13301dd991ffc301037476..adde6c7c1f7958643c46aedf8be33300d36f6306 100644
+--- a/src/objects/fixed-array-inl.h
++++ b/src/objects/fixed-array-inl.h
+@@ -217,7 +217,7 @@ int BinarySearch(T* array, Name name, int valid_entries,
+   // index). After doing the binary search and getting the correct internal
+   // index we check to have the index lower than valid_entries, if needed.
+   int high = array->number_of_entries() - 1;
+-  uint32_t hash = name.hash_field();
++  uint32_t hash = name.hash();
+   int limit = high;
+ 
+   DCHECK(low <= high);
+@@ -225,7 +225,7 @@ int BinarySearch(T* array, Name name, int valid_entries,
+   while (low != high) {
+     int mid = low + (high - low) / 2;
+     Name mid_name = array->GetSortedKey(mid);
+-    uint32_t mid_hash = mid_name.hash_field();
++    uint32_t mid_hash = mid_name.hash();
+ 
+     if (mid_hash >= hash) {
+       high = mid;
+@@ -237,7 +237,7 @@ int BinarySearch(T* array, Name name, int valid_entries,
+   for (; low <= limit; ++low) {
+     int sort_index = array->GetSortedKeyIndex(low);
+     Name entry = array->GetKey(InternalIndex(sort_index));
+-    uint32_t current_hash = entry.hash_field();
++    uint32_t current_hash = entry.hash();
+     if (current_hash != hash) {
+       // 'search_mode == ALL_ENTRIES' here and below is not needed since
+       // 'out_insertion_index != nullptr' implies 'search_mode == ALL_ENTRIES'.
+@@ -269,12 +269,12 @@ template <SearchMode search_mode, typename T>
+ int LinearSearch(T* array, Name name, int valid_entries,
+                  int* out_insertion_index) {
+   if (search_mode == ALL_ENTRIES && out_insertion_index != nullptr) {
+-    uint32_t hash = name.hash_field();
++    uint32_t hash = name.hash();
+     int len = array->number_of_entries();
+     for (int number = 0; number < len; number++) {
+       int sorted_index = array->GetSortedKeyIndex(number);
+       Name entry = array->GetKey(InternalIndex(sorted_index));
+-      uint32_t current_hash = entry.hash_field();
++      uint32_t current_hash = entry.hash();
+       if (current_hash > hash) {
+         *out_insertion_index = sorted_index;
+         return T::kNotFound;
+diff --git a/src/objects/name-inl.h b/src/objects/name-inl.h
+index 0735b4e506fbcb453d4e1a5a832225ca83ca1b96..ffcd287fd37454e3449b5064b4aa37196dadfdbd 100644
+--- a/src/objects/name-inl.h
++++ b/src/objects/name-inl.h
+@@ -94,6 +94,12 @@ uint32_t Name::Hash() {
+   return String::cast(*this).ComputeAndSetHash();
+ }
+ 
++uint32_t Name::hash() const {
++  uint32_t field = hash_field();
++  DCHECK(IsHashFieldComputed(field));
++  return field >> kHashShift;
++}
++
+ DEF_GETTER(Name, IsInterestingSymbol, bool) {
+   return IsSymbol(isolate) && Symbol::cast(*this).is_interesting_symbol();
+ }
+diff --git a/src/objects/name.h b/src/objects/name.h
+index 533d8b000ebfa0ef714b61a021de7fc3d0d456f8..6309de9d4ca4502d30c482455103dd16645e6401 100644
+--- a/src/objects/name.h
++++ b/src/objects/name.h
+@@ -23,9 +23,15 @@ class Name : public TorqueGeneratedName<Name, PrimitiveHeapObject> {
+   // Tells whether the hash code has been computed.
+   inline bool HasHashCode();
+ 
+-  // Returns a hash value used for the property table
++  // Returns a hash value used for the property table. Ensures that the hash
++  // value is computed.
++  // TODO(ishell): rename to EnsureHash().
+   inline uint32_t Hash();
+ 
++  // Returns a hash value used for the property table (same as Hash()), assumes
++  // the hash is already computed.
++  inline uint32_t hash() const;
++
+   // Equality operations.
+   inline bool Equals(Name other);
+   inline static bool Equals(Isolate* isolate, Handle<Name> one,
+diff --git a/src/objects/objects.cc b/src/objects/objects.cc
+index 5e0c831f73b6ccbe40c556497f5ba6fbc9f42b48..54b19d6cdc5ff1f7bd73605a09681c199892b9eb 100644
+--- a/src/objects/objects.cc
++++ b/src/objects/objects.cc
+@@ -4357,16 +4357,16 @@ void DescriptorArray::Sort() {
+   // Reset sorting since the descriptor array might contain invalid pointers.
+   for (int i = 0; i < len; ++i) SetSortedKey(i, i);
+   // Bottom-up max-heap construction.
+-  // Index of the last node with children
++  // Index of the last node with children.
+   const int max_parent_index = (len / 2) - 1;
+   for (int i = max_parent_index; i >= 0; --i) {
+     int parent_index = i;
+-    const uint32_t parent_hash = GetSortedKey(i).Hash();
++    const uint32_t parent_hash = GetSortedKey(i).hash();
+     while (parent_index <= max_parent_index) {
+       int child_index = 2 * parent_index + 1;
+-      uint32_t child_hash = GetSortedKey(child_index).Hash();
++      uint32_t child_hash = GetSortedKey(child_index).hash();
+       if (child_index + 1 < len) {
+-        uint32_t right_child_hash = GetSortedKey(child_index + 1).Hash();
++        uint32_t right_child_hash = GetSortedKey(child_index + 1).hash();
+         if (right_child_hash > child_hash) {
+           child_index++;
+           child_hash = right_child_hash;
+@@ -4385,13 +4385,13 @@ void DescriptorArray::Sort() {
+     SwapSortedKeys(0, i);
+     // Shift down the new top element.
+     int parent_index = 0;
+-    const uint32_t parent_hash = GetSortedKey(parent_index).Hash();
++    const uint32_t parent_hash = GetSortedKey(parent_index).hash();
+     const int max_parent_index = (i / 2) - 1;
+     while (parent_index <= max_parent_index) {
+       int child_index = parent_index * 2 + 1;
+-      uint32_t child_hash = GetSortedKey(child_index).Hash();
++      uint32_t child_hash = GetSortedKey(child_index).hash();
+       if (child_index + 1 < i) {
+-        uint32_t right_child_hash = GetSortedKey(child_index + 1).Hash();
++        uint32_t right_child_hash = GetSortedKey(child_index + 1).hash();
+         if (right_child_hash > child_hash) {
+           child_index++;
+           child_hash = right_child_hash;
+diff --git a/src/objects/transitions-inl.h b/src/objects/transitions-inl.h
+index 5694d66d948325bb139b67a3a34c22759224d139..09157b7f5d0051b80e60de51f358d4fd5bde0b99 100644
+--- a/src/objects/transitions-inl.h
++++ b/src/objects/transitions-inl.h
+@@ -169,12 +169,20 @@ int TransitionArray::SearchNameForTesting(Name name, int* out_insertion_index) {
+   return SearchName(name, out_insertion_index);
+ }
+ 
++Map TransitionArray::SearchAndGetTargetForTesting(
++    PropertyKind kind, Name name, PropertyAttributes attributes) {
++  return SearchAndGetTarget(kind, name, attributes);
++}
++
+ int TransitionArray::SearchSpecial(Symbol symbol, int* out_insertion_index) {
+   return SearchName(symbol, out_insertion_index);
+ }
+ 
+ int TransitionArray::SearchName(Name name, int* out_insertion_index) {
+   DCHECK(name.IsUniqueName());
++  // The name is taken from DescriptorArray, so it must already has a computed
++  // hash.
++  DCHECK(name.HasHashCode());
+   return internal::Search<ALL_ENTRIES>(this, name, number_of_entries(),
+                                        out_insertion_index);
+ }
+diff --git a/src/objects/transitions.cc b/src/objects/transitions.cc
+index 1309ca82be544dced9d636f52519d49e70fbc1a3..93d43f42d97ebc53adb6f5927ff92bbb82ba57aa 100644
+--- a/src/objects/transitions.cc
++++ b/src/objects/transitions.cc
+@@ -604,8 +604,8 @@ void TransitionArray::Sort() {
+         temp_kind = details.kind();
+         temp_attributes = details.attributes();
+       }
+-      int cmp = CompareKeys(temp_key, temp_key.Hash(), temp_kind,
+-                            temp_attributes, key, key.Hash(), kind, attributes);
++      int cmp = CompareKeys(temp_key, temp_key.hash(), temp_kind,
++                            temp_attributes, key, key.hash(), kind, attributes);
+       if (cmp > 0) {
+         SetKey(j + 1, temp_key);
+         SetRawTarget(j + 1, temp_target);
+diff --git a/src/objects/transitions.h b/src/objects/transitions.h
+index 7bc4d70a35da1e20120cc2f55710ecb9155fd72c..26d29f4cf5ac5c333d95503ab484a9c3b4b1a2fa 100644
+--- a/src/objects/transitions.h
++++ b/src/objects/transitions.h
+@@ -143,6 +143,9 @@ class V8_EXPORT_PRIVATE TransitionsAccessor {
+     return encoding_;
+   }
+ 
++
++  inline TransitionArray transitions();
++
+  private:
+   friend class MarkCompactCollector;  // For HasSimpleTransitionTo.
+   friend class TransitionArray;
+@@ -175,8 +178,6 @@ class V8_EXPORT_PRIVATE TransitionsAccessor {
+   void TraverseTransitionTreeInternal(TraverseCallback callback, void* data,
+                                       DisallowHeapAllocation* no_gc);
+ 
+-  inline TransitionArray transitions();
+-
+   Isolate* isolate_;
+   Handle<Map> map_handle_;
+   Map map_;
+@@ -231,7 +232,7 @@ class TransitionArray : public WeakFixedArray {
+   V8_EXPORT_PRIVATE bool IsSortedNoDuplicates();
+ #endif
+ 
+-  void Sort();
++  V8_EXPORT_PRIVATE void Sort();
+ 
+   void PrintInternal(std::ostream& os);
+ 
+@@ -260,6 +261,9 @@ class TransitionArray : public WeakFixedArray {
+   inline int SearchNameForTesting(Name name,
+                                   int* out_insertion_index = nullptr);
+ 
++  inline Map SearchAndGetTargetForTesting(PropertyKind kind, Name name,
++                                          PropertyAttributes attributes);
++
+  private:
+   friend class Factory;
+   friend class MarkCompactCollector;
+@@ -296,8 +300,8 @@ class TransitionArray : public WeakFixedArray {
+   int Search(PropertyKind kind, Name name, PropertyAttributes attributes,
+              int* out_insertion_index = nullptr);
+ 
+-  Map SearchAndGetTarget(PropertyKind kind, Name name,
+-                         PropertyAttributes attributes);
++  V8_EXPORT_PRIVATE Map SearchAndGetTarget(PropertyKind kind, Name name,
++                                           PropertyAttributes attributes);
+ 
+   // Search a non-property transition (like elements kind, observe or frozen
+   // transitions).
+diff --git a/test/cctest/BUILD.gn b/test/cctest/BUILD.gn
+index a55451c6c9c1d87b9dd670e14c16fcdac1d9753d..c4d0d98466d23be18bb2884a22c02531c9a93878 100644
+--- a/test/cctest/BUILD.gn
++++ b/test/cctest/BUILD.gn
+@@ -205,6 +205,7 @@ v8_source_set("cctest_sources") {
+     "test-debug.cc",
+     "test-decls.cc",
+     "test-deoptimization.cc",
++    "test-descriptor-array.cc",
+     "test-dictionary.cc",
+     "test-diy-fp.cc",
+     "test-double.cc",
+diff --git a/test/cctest/test-descriptor-array.cc b/test/cctest/test-descriptor-array.cc
+new file mode 100644
+index 0000000000000000000000000000000000000000..7abd36ec6c84959c3da59b8e78d9e4a0ee291632
+--- /dev/null
++++ b/test/cctest/test-descriptor-array.cc
+@@ -0,0 +1,424 @@
++// Copyright 2020 the V8 project authors. All rights reserved.
++// Use of this source code is governed by a BSD-style license that can be
++// found in the LICENSE file.
++
++#include "src/base/logging.h"
++#include "src/codegen/code-stub-assembler.h"
++#include "src/common/globals.h"
++#include "src/objects/descriptor-array.h"
++#include "src/objects/property-details.h"
++#include "src/objects/string-inl.h"
++#include "src/objects/transitions-inl.h"
++#include "test/cctest/cctest.h"
++#include "test/cctest/compiler/code-assembler-tester.h"
++#include "test/cctest/compiler/function-tester.h"
++#include "test/cctest/test-transitions.h"
++
++namespace v8 {
++namespace internal {
++
++namespace {
++
++using Label = compiler::CodeAssemblerLabel;
++template <class T>
++using TVariable = compiler::TypedCodeAssemblerVariable<T>;
++
++Handle<Name> NewNameWithHash(Isolate* isolate, const char* str, uint32_t hash,
++                             bool is_integer) {
++  uint32_t hash_field = hash << Name::kHashShift;
++
++  static_assert(Name::kNofHashBitFields == 2, "This test needs updating");
++  static_assert(Name::kHashNotComputedMask == 1, "This test needs updating");
++  static_assert(Name::kIsNotIntegerIndexMask == 2, "This test needs updating");
++
++  if (!is_integer) {
++    hash_field |= Name::kIsNotIntegerIndexMask;
++  }
++  Handle<Name> name = isolate->factory()->NewOneByteInternalizedString(
++      OneByteVector(str), hash_field);
++  name->set_hash_field(hash_field);
++  CHECK(name->IsUniqueName());
++  return name;
++}
++
++template <typename... Args>
++MaybeHandle<Object> Call(Isolate* isolate, Handle<JSFunction> function,
++                         Args... args) {
++  const int nof_args = sizeof...(Args);
++  Handle<Object> call_args[] = {args...};
++  Handle<Object> receiver = isolate->factory()->undefined_value();
++  return Execution::Call(isolate, function, receiver, nof_args, call_args);
++}
++
++void CheckDescriptorArrayLookups(Isolate* isolate, Handle<Map> map,
++                                 std::vector<Handle<Name>>& names,
++                                 Handle<JSFunction> csa_lookup) {
++  // Test C++ implementation.
++  {
++    DisallowHeapAllocation no_gc;
++    DescriptorArray descriptors = map->instance_descriptors();
++    DCHECK(descriptors.IsSortedNoDuplicates());
++    int nof_descriptors = descriptors.number_of_descriptors();
++
++    for (size_t i = 0; i < names.size(); ++i) {
++      Name name = *names[i];
++      InternalIndex index = descriptors.Search(name, nof_descriptors, false);
++      CHECK(index.is_found());
++      CHECK_EQ(i, index.as_uint32());
++    }
++  }
++
++  // Test CSA implementation.
++  if (!FLAG_jitless) {
++    for (size_t i = 0; i < names.size(); ++i) {
++      Handle<Object> name_index =
++          Call(isolate, csa_lookup, map, names[i]).ToHandleChecked();
++      CHECK(name_index->IsSmi());
++      CHECK_EQ(DescriptorArray::ToKeyIndex(static_cast<int>(i)),
++               Smi::ToInt(*name_index));
++    }
++  }
++}
++
++void CheckTransitionArrayLookups(Isolate* isolate,
++                                 Handle<TransitionArray> transitions,
++                                 std::vector<Handle<Map>>& maps,
++                                 Handle<JSFunction> csa_lookup) {
++  // Test C++ implementation.
++  {
++    DisallowHeapAllocation no_gc;
++    DCHECK(transitions->IsSortedNoDuplicates());
++
++    for (size_t i = 0; i < maps.size(); ++i) {
++      Map expected_map = *maps[i];
++      Name name =
++          expected_map.instance_descriptors().GetKey(expected_map.LastAdded());
++
++      Map map = transitions->SearchAndGetTargetForTesting(PropertyKind::kData,
++                                                          name, NONE);
++      CHECK(!map.is_null());
++      CHECK_EQ(expected_map, map);
++    }
++  }
++
++  // Test CSA implementation.
++  if (!FLAG_jitless) {
++    for (size_t i = 0; i < maps.size(); ++i) {
++      Handle<Map> expected_map = maps[i];
++      Handle<Name> name(expected_map->instance_descriptors().GetKey(
++                            expected_map->LastAdded()),
++                        isolate);
++
++      Handle<Object> transition_map =
++          Call(isolate, csa_lookup, transitions, name).ToHandleChecked();
++      CHECK(transition_map->IsMap());
++      CHECK_EQ(*expected_map, *transition_map);
++    }
++  }
++}
++
++// Creates function with (Map, Name) arguments. Returns Smi with the index of
++// the name value of the found descriptor (DescriptorArray::ToKeyIndex())
++// or null otherwise.
++Handle<JSFunction> CreateCsaDescriptorArrayLookup(Isolate* isolate) {
++  // We are not allowed to generate code in jitless mode.
++  if (FLAG_jitless) return Handle<JSFunction>();
++
++  // Preallocate handle for the result in the current handle scope.
++  Handle<JSFunction> result_function(JSFunction{}, isolate);
++
++  const int kNumParams = 2;
++
++  compiler::CodeAssemblerTester asm_tester(
++      isolate, kNumParams + 1,  // +1 to include receiver.
++      CodeKind::STUB);
++  {
++    CodeStubAssembler m(asm_tester.state());
++
++    TNode<Map> map = m.CAST(m.Parameter(1));
++    TNode<Name> unique_name = m.CAST(m.Parameter(2));
++
++    Label passed(&m), failed(&m);
++    Label if_found(&m), if_not_found(&m);
++    TVariable<IntPtrT> var_name_index(&m);
++
++    TNode<Uint32T> bit_field3 = m.LoadMapBitField3(map);
++    TNode<DescriptorArray> descriptors = m.LoadMapDescriptors(map);
++
++    m.DescriptorLookup(unique_name, descriptors, bit_field3, &if_found,
++                       &var_name_index, &if_not_found);
++
++    m.BIND(&if_found);
++    m.Return(m.SmiTag(var_name_index.value()));
++
++    m.BIND(&if_not_found);
++    m.Return(m.NullConstant());
++  }
++
++  {
++    compiler::FunctionTester ft(asm_tester.GenerateCode(), kNumParams);
++    // Copy function value to a handle created in the outer handle scope.
++    *(result_function.location()) = ft.function->ptr();
++  }
++
++  return result_function;
++}
++
++// Creates function with (TransitionArray, Name) arguments. Returns transition
++// map if transition is found or null otherwise.
++Handle<JSFunction> CreateCsaTransitionArrayLookup(Isolate* isolate) {
++  // We are not allowed to generate code in jitless mode.
++  if (FLAG_jitless) return Handle<JSFunction>();
++
++  // Preallocate handle for the result in the current handle scope.
++  Handle<JSFunction> result_function(JSFunction{}, isolate);
++
++  const int kNumParams = 2;
++  compiler::CodeAssemblerTester asm_tester(
++      isolate, kNumParams + 1,  // +1 to include receiver.
++      CodeKind::STUB);
++  {
++    CodeStubAssembler m(asm_tester.state());
++
++    TNode<TransitionArray> transitions = m.CAST(m.Parameter(1));
++    TNode<Name> unique_name = m.CAST(m.Parameter(2));
++
++    Label passed(&m), failed(&m);
++    Label if_found(&m), if_not_found(&m);
++    TVariable<IntPtrT> var_name_index(&m);
++
++    m.TransitionLookup(unique_name, transitions, &if_found, &var_name_index,
++                       &if_not_found);
++
++    m.BIND(&if_found);
++    {
++      STATIC_ASSERT(kData == 0);
++      STATIC_ASSERT(NONE == 0);
++      const int kKeyToTargetOffset = (TransitionArray::kEntryTargetIndex -
++                                      TransitionArray::kEntryKeyIndex) *
++                                     kTaggedSize;
++      TNode<Map> transition_map = m.CAST(m.GetHeapObjectAssumeWeak(
++          m.LoadArrayElement(transitions, WeakFixedArray::kHeaderSize,
++                             var_name_index.value(), kKeyToTargetOffset)));
++      m.Return(transition_map);
++    }
++
++    m.BIND(&if_not_found);
++    m.Return(m.NullConstant());
++  }
++
++  {
++    compiler::FunctionTester ft(asm_tester.GenerateCode(), kNumParams);
++    // Copy function value to a handle created in the outer handle scope.
++    *(result_function.location()) = ft.function->ptr();
++  }
++
++  return result_function;
++}
++
++}  // namespace
++
++TEST(DescriptorArrayHashCollisionMassive) {
++  CcTest::InitializeVM();
++  Isolate* isolate = CcTest::i_isolate();
++  HandleScope handle_scope(isolate);
++
++  static_assert(Name::kNofHashBitFields == 2, "This test needs updating");
++
++  std::vector<Handle<Name>> names;
++
++  // Use the same hash value for all names.
++  uint32_t hash =
++      static_cast<uint32_t>(isolate->GenerateIdentityHash(Name::kHashBitMask));
++
++  for (int i = 0; i < kMaxNumberOfDescriptors / 2; ++i) {
++    // Add pairs of names having the same base hash value but having different
++    // values of is_integer bit.
++    bool first_is_integer = (i & 1) != 0;
++    bool second_is_integer = (i & 2) != 0;
++
++    names.push_back(NewNameWithHash(isolate, "a", hash, first_is_integer));
++    names.push_back(NewNameWithHash(isolate, "b", hash, second_is_integer));
++  }
++
++  // Create descriptor array with the created names by appending fields to some
++  // map. DescriptorArray marking relies on the fact that it's attached to an
++  // owning map.
++  Handle<Map> map = Map::Create(isolate, 0);
++
++  Handle<FieldType> any_type = FieldType::Any(isolate);
++
++  for (size_t i = 0; i < names.size(); ++i) {
++    map = Map::CopyWithField(isolate, map, names[i], any_type, NONE,
++                             PropertyConstness::kMutable,
++                             Representation::Tagged(), OMIT_TRANSITION)
++              .ToHandleChecked();
++  }
++
++  Handle<JSFunction> csa_lookup = CreateCsaDescriptorArrayLookup(isolate);
++
++  CheckDescriptorArrayLookups(isolate, map, names, csa_lookup);
++
++  // Sort descriptor array and check it again.
++  map->instance_descriptors().Sort();
++  CheckDescriptorArrayLookups(isolate, map, names, csa_lookup);
++}
++
++TEST(DescriptorArrayHashCollision) {
++  CcTest::InitializeVM();
++  Isolate* isolate = CcTest::i_isolate();
++  HandleScope handle_scope(isolate);
++
++  static_assert(Name::kNofHashBitFields == 2, "This test needs updating");
++
++  std::vector<Handle<Name>> names;
++  uint32_t hash = 0;
++
++  for (int i = 0; i < kMaxNumberOfDescriptors / 2; ++i) {
++    if (i % 2 == 0) {
++      // Change hash value for every pair of names.
++      hash = static_cast<uint32_t>(
++          isolate->GenerateIdentityHash(Name::kHashBitMask));
++    }
++
++    // Add pairs of names having the same base hash value but having different
++    // values of is_integer bit.
++    bool first_is_integer = (i & 1) != 0;
++    bool second_is_integer = (i & 2) != 0;
++
++    names.push_back(NewNameWithHash(isolate, "a", hash, first_is_integer));
++    names.push_back(NewNameWithHash(isolate, "b", hash, second_is_integer));
++  }
++
++  // Create descriptor array with the created names by appending fields to some
++  // map. DescriptorArray marking relies on the fact that it's attached to an
++  // owning map.
++  Handle<Map> map = Map::Create(isolate, 0);
++
++  Handle<FieldType> any_type = FieldType::Any(isolate);
++
++  for (size_t i = 0; i < names.size(); ++i) {
++    map = Map::CopyWithField(isolate, map, names[i], any_type, NONE,
++                             PropertyConstness::kMutable,
++                             Representation::Tagged(), OMIT_TRANSITION)
++              .ToHandleChecked();
++  }
++
++  Handle<JSFunction> csa_lookup = CreateCsaDescriptorArrayLookup(isolate);
++
++  CheckDescriptorArrayLookups(isolate, map, names, csa_lookup);
++
++  // Sort descriptor array and check it again.
++  map->instance_descriptors().Sort();
++  CheckDescriptorArrayLookups(isolate, map, names, csa_lookup);
++}
++
++TEST(TransitionArrayHashCollisionMassive) {
++  CcTest::InitializeVM();
++  Isolate* isolate = CcTest::i_isolate();
++  HandleScope handle_scope(isolate);
++
++  static_assert(Name::kNofHashBitFields == 2, "This test needs updating");
++
++  std::vector<Handle<Name>> names;
++
++  // Use the same hash value for all names.
++  uint32_t hash =
++      static_cast<uint32_t>(isolate->GenerateIdentityHash(Name::kHashBitMask));
++
++  for (int i = 0; i < TransitionsAccessor::kMaxNumberOfTransitions / 2; ++i) {
++    // Add pairs of names having the same base hash value but having different
++    // values of is_integer bit.
++    bool first_is_integer = (i & 1) != 0;
++    bool second_is_integer = (i & 2) != 0;
++
++    names.push_back(NewNameWithHash(isolate, "a", hash, first_is_integer));
++    names.push_back(NewNameWithHash(isolate, "b", hash, second_is_integer));
++  }
++
++  // Create transitions for each name.
++  Handle<Map> root_map = Map::Create(isolate, 0);
++
++  std::vector<Handle<Map>> maps;
++
++  Handle<FieldType> any_type = FieldType::Any(isolate);
++
++  for (size_t i = 0; i < names.size(); ++i) {
++    Handle<Map> map =
++        Map::CopyWithField(isolate, root_map, names[i], any_type, NONE,
++                           PropertyConstness::kMutable,
++                           Representation::Tagged(), INSERT_TRANSITION)
++            .ToHandleChecked();
++    maps.push_back(map);
++  }
++
++  Handle<JSFunction> csa_lookup = CreateCsaTransitionArrayLookup(isolate);
++
++  Handle<TransitionArray> transition_array(
++      TestTransitionsAccessor(isolate, root_map).transitions(), isolate);
++
++  CheckTransitionArrayLookups(isolate, transition_array, maps, csa_lookup);
++
++  // Sort transition array and check it again.
++  transition_array->Sort();
++  CheckTransitionArrayLookups(isolate, transition_array, maps, csa_lookup);
++}
++
++TEST(TransitionArrayHashCollision) {
++  CcTest::InitializeVM();
++  Isolate* isolate = CcTest::i_isolate();
++  HandleScope handle_scope(isolate);
++
++  static_assert(Name::kNofHashBitFields == 2, "This test needs updating");
++
++  std::vector<Handle<Name>> names;
++
++  // Use the same hash value for all names.
++  uint32_t hash =
++      static_cast<uint32_t>(isolate->GenerateIdentityHash(Name::kHashBitMask));
++
++  for (int i = 0; i < TransitionsAccessor::kMaxNumberOfTransitions / 2; ++i) {
++    if (i % 2 == 0) {
++      // Change hash value for every pair of names.
++      hash = static_cast<uint32_t>(
++          isolate->GenerateIdentityHash(Name::kHashBitMask));
++    }
++    // Add pairs of names having the same base hash value but having different
++    // values of is_integer bit.
++    bool first_is_integer = (i & 1) != 0;
++    bool second_is_integer = (i & 2) != 0;
++
++    names.push_back(NewNameWithHash(isolate, "a", hash, first_is_integer));
++    names.push_back(NewNameWithHash(isolate, "b", hash, second_is_integer));
++  }
++
++  // Create transitions for each name.
++  Handle<Map> root_map = Map::Create(isolate, 0);
++
++  std::vector<Handle<Map>> maps;
++
++  Handle<FieldType> any_type = FieldType::Any(isolate);
++
++  for (size_t i = 0; i < names.size(); ++i) {
++    Handle<Map> map =
++        Map::CopyWithField(isolate, root_map, names[i], any_type, NONE,
++                           PropertyConstness::kMutable,
++                           Representation::Tagged(), INSERT_TRANSITION)
++            .ToHandleChecked();
++    maps.push_back(map);
++  }
++
++  Handle<JSFunction> csa_lookup = CreateCsaTransitionArrayLookup(isolate);
++
++  Handle<TransitionArray> transition_array(
++      TestTransitionsAccessor(isolate, root_map).transitions(), isolate);
++
++  CheckTransitionArrayLookups(isolate, transition_array, maps, csa_lookup);
++
++  // Sort transition array and check it again.
++  transition_array->Sort();
++  CheckTransitionArrayLookups(isolate, transition_array, maps, csa_lookup);
++}
++
++}  // namespace internal
++}  // namespace v8
+diff --git a/test/cctest/test-transitions.h b/test/cctest/test-transitions.h
+index 724eb3d3c544b5e9535e7a1b14d95eccec34f4cc..66bbbfa76dd7c2aa4c84363a69705d2564fee8a6 100644
+--- a/test/cctest/test-transitions.h
++++ b/test/cctest/test-transitions.h
+@@ -24,6 +24,8 @@ class TestTransitionsAccessor : public TransitionsAccessor {
+   bool IsFullTransitionArrayEncoding() {
+     return encoding() == kFullTransitionArray;
+   }
++
++  TransitionArray transitions() { return TransitionsAccessor::transitions(); }
+ };
+ 
+ }  // namespace internal
diff --git a/patches/v8/cherry-pick-8c725f7b5bbf.patch b/patches/v8/cherry-pick-8c725f7b5bbf.patch
new file mode 100644
index 0000000000000..105e7c2d33ccf
--- /dev/null
+++ b/patches/v8/cherry-pick-8c725f7b5bbf.patch
@@ -0,0 +1,127 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Thibaud Michaud <thibaudm@chromium.org>
+Date: Thu, 15 Oct 2020 12:45:34 +0200
+Subject: Merged: [codegen] Skip invalid optimization in tail calls
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Preparing for tail call is usually done by emitting the gap moves and
+then moving the stack pointer to its new position. An optimization
+consists in moving the stack pointer first and transforming some of the
+moves into pushes. In the attached case it looks like this (arm):
+
+138  add sp, sp, #40
+13c  str r6, [sp, #-4]!
+140  str r6, [sp, #-4]!
+144  str r6, [sp, #-4]!
+148  str r6, [sp, #-4]!
+14c  str r6, [sp, #-4]!
+...
+160  vldr d1, [sp - 4*3]
+
+The last line is a gap reload, but because the stack pointer was already
+moved, the slot is now below the stack pointer. This is invalid and
+triggers this DCHECK:
+
+Fatal error in ../../v8/src/codegen/arm/assembler-arm.cc, line 402
+Debug check failed: 0 <= offset (0 vs. -12).
+
+A comment already explains that we skip the optimization if the gap
+contains stack moves to prevent this, but the code only checks for
+non-FP slots. This is fixed by replacing "source.IsStackSlot()" with
+"source.IsAnyStackSlot()":
+
+108  vldr d1, [sp + 4*2]
+...
+118  str r0, [sp, #+36]
+11c  str r0, [sp, #+32]
+120  str r0, [sp, #+28]
+124  str r0, [sp, #+24]
+128  str r0, [sp, #+20]
+...
+134  add sp, sp, #20
+
+TBR=​jgruber@chromium.org
+
+(cherry picked from commit 7506e063d0d7fb00e4b9c06735c91e1953296867)
+
+Change-Id: I66ed6187755af956e245207e940c83ea0697a5e6
+Bug: chromium:1137608
+No-Try: true
+No-Presubmit: true
+No-Tree-Checks: true
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2505976
+Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
+Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
+Cr-Commit-Position: refs/branch-heads/8.6@{#42}
+Cr-Branched-From: a64aed2333abf49e494d2a5ce24bbd14fff19f60-refs/heads/8.6.395@{#1}
+Cr-Branched-From: a626bc036236c9bf92ac7b87dc40c9e538b087e3-refs/heads/master@{#69472}
+
+diff --git a/src/compiler/backend/code-generator.cc b/src/compiler/backend/code-generator.cc
+index 83dccf69e82dd144a1ca4720947104b1960ae812..5596058c00543744c35da8f55c8ac9563fa15560 100644
+--- a/src/compiler/backend/code-generator.cc
++++ b/src/compiler/backend/code-generator.cc
+@@ -609,8 +609,8 @@ void CodeGenerator::GetPushCompatibleMoves(Instruction* instr,
+         // then the full gap resolver must be used since optimization with
+         // pushes don't participate in the parallel move and might clobber
+         // values needed for the gap resolve.
+-        if (source.IsStackSlot() && LocationOperand::cast(source).index() >=
+-                                        first_push_compatible_index) {
++        if (source.IsAnyStackSlot() && LocationOperand::cast(source).index() >=
++                                           first_push_compatible_index) {
+           pushes->clear();
+           return;
+         }
+diff --git a/test/mjsunit/regress/wasm/regress-1137608.js b/test/mjsunit/regress/wasm/regress-1137608.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..5011dced2f70ffbe2b6096a4e1863f434c8898a8
+--- /dev/null
++++ b/test/mjsunit/regress/wasm/regress-1137608.js
+@@ -0,0 +1,46 @@
++// Copyright 2020 the V8 project authors. All rights reserved.
++// Use of this source code is governed by a BSD-style license that can be
++// found in the LICENSE file.
++//
++// Flags: --no-liftoff --experimental-wasm-return-call --experimental-wasm-threads
++
++load("test/mjsunit/wasm/wasm-module-builder.js");
++
++(function Regress1137608() {
++  print(arguments.callee.name);
++  let builder = new WasmModuleBuilder();
++  let sig0 = builder.addType(kSig_i_iii);
++  let sig1 = builder.addType(makeSig([kWasmF64, kWasmF64, kWasmI32,
++        kWasmI32, kWasmI32, kWasmF32, kWasmI32, kWasmF64, kWasmI32, kWasmF32,
++        kWasmI32, kWasmF32, kWasmI32, kWasmF64, kWasmI32], [kWasmI32]));
++  let main = builder.addFunction("main", sig0)
++      .addBody([
++        kExprI64Const, 0,
++        kExprF64UConvertI64,
++        kExprF64Const, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x00, 0x00,
++        kExprF64Const, 0x30, 0x30, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00,
++        kExprF64Mul,
++        kExprI32Const, 0,
++        kExprF64Const, 0x30, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
++        kExprF64StoreMem, 0x00, 0xb0, 0xe0, 0xc0, 0x81, 0x03,
++        kExprI32Const, 0,
++        kExprI32Const, 0,
++        kExprI32Const, 0,
++        kExprF32Const, 0x00, 0x00, 0x00, 0x00,
++        kExprI32Const, 0,
++        kExprF64Const, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
++        kExprI32Const, 0,
++        kExprF32Const, 0x00, 0x00, 0x00, 0x00,
++        kExprI32Const, 0,
++        kExprF32Const, 0x00, 0x00, 0x00, 0x00,
++        kExprI32Const, 0,
++        kExprF64Const, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
++        kExprI32Const, 0,
++        kExprI32Const, 2,
++        kExprReturnCallIndirect, sig1, kTableZero]).exportFunc();
++  builder.addFunction("f", sig1).addBody([kExprI32Const, 0]);
++  builder.addTable(kWasmAnyFunc, 4, 4);
++  builder.addMemory(16, 32, false, true);
++  let module = new WebAssembly.Module(builder.toBuffer());
++  let instance = new WebAssembly.Instance(module);
++})();
diff --git a/patches/v8/cherry-pick-ffd6ff5a61b9.patch b/patches/v8/cherry-pick-ffd6ff5a61b9.patch
new file mode 100644
index 0000000000000..e8e179632950a
--- /dev/null
+++ b/patches/v8/cherry-pick-ffd6ff5a61b9.patch
@@ -0,0 +1,140 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zhi An Ng <zhin@chromium.org>
+Date: Fri, 8 Jan 2021 07:29:02 +0000
+Subject: Merged: [wasm-simd] Fix loading fp pair registers
+
+We were incorrectly clearing the high reg from the list of regs to load.
+The intention was to prevent double (and incorrect) loading - loading
+128 bits from the low fp and the loading 128 bits from the high fp.
+But this violates the assumption that the two regs in a pair would be
+set or unset at the same time.
+
+The fix here is to introduce a new enum for register loads, a nop, which
+does nothing. The high fp of the fp pair will be tied to this nop, so as
+we iterate down the reglist, we load 128 bits using the low fp, then
+don't load anything for the high fp.
+
+Bug: chromium:1161654
+(cherry picked from commit 8c698702ced0de085aa91370d8cb44deab3fcf54)
+
+Change-Id: Ib8134574b24f74f24ca9efd34b3444173296d8f1
+No-Try: true
+No-Presubmit: true
+No-Tree-Checks: true
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2619416
+Commit-Queue: Zhi An Ng <zhin@chromium.org>
+Reviewed-by: Clemens Backes <clemensb@chromium.org>
+Cr-Commit-Position: refs/branch-heads/8.8@{#28}
+Cr-Branched-From: 2dbcdc105b963ee2501c82139eef7e0603977ff0-refs/heads/8.8.278@{#1}
+Cr-Branched-From: 366d30c99049b3f1c673f8a93deb9f879d0fa9f0-refs/heads/master@{#71094}
+
+diff --git a/src/wasm/baseline/liftoff-assembler.cc b/src/wasm/baseline/liftoff-assembler.cc
+index a8b40a7b4624f5e8a165b52f208877634c06c35f..5135f90a3a37bd680894a54c543dc943ee506660 100644
+--- a/src/wasm/baseline/liftoff-assembler.cc
++++ b/src/wasm/baseline/liftoff-assembler.cc
+@@ -37,6 +37,7 @@ class StackTransferRecipe {
+ 
+   struct RegisterLoad {
+     enum LoadKind : uint8_t {
++      kNop,           // no-op, used for high fp of a fp pair.
+       kConstant,      // load a constant value into a register.
+       kStack,         // fill a register from a stack slot.
+       kLowHalfStack,  // fill a register from the low half of a stack slot.
+@@ -63,6 +64,10 @@ class StackTransferRecipe {
+       return {half == kLowWord ? kLowHalfStack : kHighHalfStack, kWasmI32,
+               offset};
+     }
++    static RegisterLoad Nop() {
++      // ValueType does not matter.
++      return {kNop, kWasmI32, 0};
++    }
+ 
+    private:
+     RegisterLoad(LoadKind kind, ValueType type, int32_t value)
+@@ -217,11 +222,11 @@ class StackTransferRecipe {
+           RegisterLoad::HalfStack(stack_offset, kHighWord);
+     } else if (dst.is_fp_pair()) {
+       DCHECK_EQ(kWasmS128, type);
+-      // load_dst_regs_.set above will set both low and high fp regs.
+-      // But unlike gp_pair, we load a kWasm128 in one go in ExecuteLoads.
+-      // So unset the top fp register to skip loading it.
+-      load_dst_regs_.clear(dst.high());
++      // Only need register_load for low_gp since we load 128 bits at one go.
++      // Both low and high need to be set in load_dst_regs_ but when iterating
++      // over it, both low and high will be cleared, so we won't load twice.
+       *register_load(dst.low()) = RegisterLoad::Stack(stack_offset, type);
++      *register_load(dst.high()) = RegisterLoad::Nop();
+     } else {
+       *register_load(dst) = RegisterLoad::Stack(stack_offset, type);
+     }
+@@ -318,6 +323,8 @@ class StackTransferRecipe {
+     for (LiftoffRegister dst : load_dst_regs_) {
+       RegisterLoad* load = register_load(dst);
+       switch (load->kind) {
++        case RegisterLoad::kNop:
++          break;
+         case RegisterLoad::kConstant:
+           asm_->LoadConstant(dst, load->type == kWasmI64
+                                       ? WasmValue(int64_t{load->value})
+diff --git a/test/mjsunit/regress/wasm/regress-1161654.js b/test/mjsunit/regress/wasm/regress-1161654.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..93f2c3b556fc55edc157dadc49b23d5bc9538135
+--- /dev/null
++++ b/test/mjsunit/regress/wasm/regress-1161654.js
+@@ -0,0 +1,56 @@
++// Copyright 2021 the V8 project authors. All rights reserved.
++// Use of this source code is governed by a BSD-style license that can be
++// found in the LICENSE file.
++
++// Flags: --wasm-staging
++
++// This is a fuzzer-generated test case that exposed a bug in Liftoff that only
++// affects ARM, where the fp register aliasing is different from other archs.
++// We were inncorrectly clearing the the high fp register in a LiftoffRegList
++// indicating registers to load, hitting a DCHECK.
++load('test/mjsunit/wasm/wasm-module-builder.js');
++
++const builder = new WasmModuleBuilder();
++builder.addMemory(19, 32, false);
++builder.addGlobal(kWasmI32, 0);
++builder.addType(makeSig([], []));
++builder.addType(makeSig([kWasmI64, kWasmS128, kWasmF32], [kWasmI32]));
++// Generate function 1 (out of 5).
++builder.addFunction(undefined, 0 /* sig */)
++  .addBodyWithEnd([
++// signature: v_v
++// body:
++kExprI32Const, 0x05,  // i32.const
++kExprReturn,  // return
++kExprUnreachable,  // unreachable
++kExprEnd,  // end @5
++]);
++// Generate function 4 (out of 5).
++builder.addFunction(undefined, 1 /* sig */)
++  .addBodyWithEnd([
++// signature: i_lsf
++// body:
++kExprLocalGet, 0x01,  // local.get
++kExprLocalGet, 0x01,  // local.get
++kExprGlobalGet, 0x00,  // global.get
++kExprDrop,  // drop
++kExprLoop, kWasmStmt,  // loop @8
++  kExprLoop, 0x00,  // loop @10
++    kExprI32Const, 0x01,  // i32.const
++    kExprMemoryGrow, 0x00,  // memory.grow
++    kExprI64LoadMem8U, 0x00, 0x70,  // i64.load8_u
++    kExprLoop, 0x00,  // loop @19
++      kExprCallFunction, 0x00,  // call function #0: v_v
++      kExprEnd,  // end @23
++    kExprI64Const, 0xf1, 0x24,  // i64.const
++    kExprGlobalGet, 0x00,  // global.get
++    kExprDrop,  // drop
++    kExprBr, 0x00,  // br depth=0
++    kExprEnd,  // end @32
++  kExprEnd,  // end @33
++kExprI32Const, 0x5b,  // i32.const
++kExprReturn,  // return
++kExprEnd,  // end @37
++]);
++// Instantiation is enough to cause a crash.
++const instance = builder.instantiate();
diff --git a/patches/v8/lts-m86_builtins_fix_array_prototype_concat_with_species.patch b/patches/v8/lts-m86_builtins_fix_array_prototype_concat_with_species.patch
new file mode 100644
index 0000000000000..de0269a10a104
--- /dev/null
+++ b/patches/v8/lts-m86_builtins_fix_array_prototype_concat_with_species.patch
@@ -0,0 +1,96 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Igor Sheludko <ishell@chromium.org>
+Date: Wed, 7 Apr 2021 19:12:32 +0200
+Subject: Fix Array.prototype.concat with @@species
+
+(cherry picked from commit 7989e04979c3195e60a6814e8263063eb91f7b47)
+
+No-Try: true
+No-Presubmit: true
+No-Tree-Checks: true
+Bug: chromium:1195977
+Change-Id: I16843bce2e9f776abca0f2b943b898ab5e597e42
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2810787
+Reviewed-by: Camillo Bruni <cbruni@chromium.org>
+Commit-Queue: Igor Sheludko <ishell@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#73842}
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2823829
+Commit-Queue: Jana Grill <janagrill@chromium.org>
+Reviewed-by: Igor Sheludko <ishell@chromium.org>
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Cr-Commit-Position: refs/branch-heads/8.6@{#77}
+Cr-Branched-From: a64aed2333abf49e494d2a5ce24bbd14fff19f60-refs/heads/8.6.395@{#1}
+Cr-Branched-From: a626bc036236c9bf92ac7b87dc40c9e538b087e3-refs/heads/master@{#69472}
+
+diff --git a/src/builtins/builtins-array.cc b/src/builtins/builtins-array.cc
+index 3c2fe33c5b4b330c509d2926bc1e30daa1e09dba..938fb96c1d42d8152f974df33c3bed4cc1b542d3 100644
+--- a/src/builtins/builtins-array.cc
++++ b/src/builtins/builtins-array.cc
+@@ -649,11 +649,14 @@ class ArrayConcatVisitor {
+         index_offset_(0u),
+         bit_field_(FastElementsField::encode(fast_elements) |
+                    ExceedsLimitField::encode(false) |
+-                   IsFixedArrayField::encode(storage->IsFixedArray()) |
++                   IsFixedArrayField::encode(storage->IsFixedArray(isolate)) |
+                    HasSimpleElementsField::encode(
+-                       storage->IsFixedArray() ||
+-                       !storage->map().IsCustomElementsReceiverMap())) {
+-    DCHECK(!(this->fast_elements() && !is_fixed_array()));
++                       storage->IsFixedArray(isolate) ||
++                       // Don't take fast path for storages that might have
++                       // side effects when storing to them.
++                       (!storage->map(isolate).IsCustomElementsReceiverMap() &&
++                        !storage->IsJSTypedArray(isolate)))) {
++    DCHECK_IMPLIES(this->fast_elements(), is_fixed_array());
+   }
+ 
+   ~ArrayConcatVisitor() { clear_storage(); }
+@@ -1063,8 +1066,8 @@ bool IterateElements(Isolate* isolate, Handle<JSReceiver> receiver,
+     return IterateElementsSlow(isolate, receiver, length, visitor);
+   }
+ 
+-  if (!HasOnlySimpleElements(isolate, *receiver) ||
+-      !visitor->has_simple_elements()) {
++  if (!visitor->has_simple_elements() ||
++      !HasOnlySimpleElements(isolate, *receiver)) {
+     return IterateElementsSlow(isolate, receiver, length, visitor);
+   }
+   Handle<JSObject> array = Handle<JSObject>::cast(receiver);
+diff --git a/src/objects/fixed-array-inl.h b/src/objects/fixed-array-inl.h
+index adde6c7c1f7958643c46aedf8be33300d36f6306..1bc26ed1747d85d17da218f7521ff3a26bbdf25f 100644
+--- a/src/objects/fixed-array-inl.h
++++ b/src/objects/fixed-array-inl.h
+@@ -320,7 +320,7 @@ int Search(T* array, Name name, int valid_entries, int* out_insertion_index,
+ double FixedDoubleArray::get_scalar(int index) {
+   DCHECK(map() != GetReadOnlyRoots().fixed_cow_array_map() &&
+          map() != GetReadOnlyRoots().fixed_array_map());
+-  DCHECK(index >= 0 && index < this->length());
++  DCHECK_LT(static_cast<unsigned>(index), static_cast<unsigned>(length()));
+   DCHECK(!is_the_hole(index));
+   return ReadField<double>(kHeaderSize + index * kDoubleSize);
+ }
+@@ -328,7 +328,7 @@ double FixedDoubleArray::get_scalar(int index) {
+ uint64_t FixedDoubleArray::get_representation(int index) {
+   DCHECK(map() != GetReadOnlyRoots().fixed_cow_array_map() &&
+          map() != GetReadOnlyRoots().fixed_array_map());
+-  DCHECK(index >= 0 && index < this->length());
++  DCHECK_LT(static_cast<unsigned>(index), static_cast<unsigned>(length()));
+   int offset = kHeaderSize + index * kDoubleSize;
+   // Bug(v8:8875): Doubles may be unaligned.
+   return base::ReadUnalignedValue<uint64_t>(field_address(offset));
+@@ -346,6 +346,7 @@ Handle<Object> FixedDoubleArray::get(FixedDoubleArray array, int index,
+ void FixedDoubleArray::set(int index, double value) {
+   DCHECK(map() != GetReadOnlyRoots().fixed_cow_array_map() &&
+          map() != GetReadOnlyRoots().fixed_array_map());
++  DCHECK_LT(static_cast<unsigned>(index), static_cast<unsigned>(length()));
+   int offset = kHeaderSize + index * kDoubleSize;
+   if (std::isnan(value)) {
+     WriteField<double>(offset, std::numeric_limits<double>::quiet_NaN());
+@@ -362,6 +363,7 @@ void FixedDoubleArray::set_the_hole(Isolate* isolate, int index) {
+ void FixedDoubleArray::set_the_hole(int index) {
+   DCHECK(map() != GetReadOnlyRoots().fixed_cow_array_map() &&
+          map() != GetReadOnlyRoots().fixed_array_map());
++  DCHECK_LT(static_cast<unsigned>(index), static_cast<unsigned>(length()));
+   int offset = kHeaderSize + index * kDoubleSize;
+   base::WriteUnalignedValue<uint64_t>(field_address(offset), kHoleNanInt64);
+ }
diff --git a/patches/v8/lts-m86_builtins_harden_array_prototype_concat.patch b/patches/v8/lts-m86_builtins_harden_array_prototype_concat.patch
new file mode 100644
index 0000000000000..b3516e25daa20
--- /dev/null
+++ b/patches/v8/lts-m86_builtins_harden_array_prototype_concat.patch
@@ -0,0 +1,79 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jana Grill <janagrill@google.com>
+Date: Tue, 13 Apr 2021 16:54:14 +0200
+Subject: Harden Array.prototype.concat.
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Defence in depth patch to prevent JavaScript from executing
+from within IterateElements.
+
+R=​ishell@chromium.org
+R=​cbruni@chromium.org
+
+(cherry picked from commit 8284359ed0607e452a4dda2ce89811fb019b4aaa)
+
+No-Try: true
+No-Presubmit: true
+No-Tree-Checks: true
+Bug: chromium:1195977
+Change-Id: Ie59d468b73b94818cea986a3ded0804f6dddd10b
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2819941
+Reviewed-by: Camillo Bruni <cbruni@chromium.org>
+Reviewed-by: Igor Sheludko <ishell@chromium.org>
+Commit-Queue: Igor Sheludko <ishell@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#73898}
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2821961
+Commit-Queue: Jana Grill <janagrill@chromium.org>
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Cr-Commit-Position: refs/branch-heads/8.6@{#76}
+Cr-Branched-From: a64aed2333abf49e494d2a5ce24bbd14fff19f60-refs/heads/8.6.395@{#1}
+Cr-Branched-From: a626bc036236c9bf92ac7b87dc40c9e538b087e3-refs/heads/master@{#69472}
+
+diff --git a/AUTHORS b/AUTHORS
+index 31a46b9bec0757c78650124793ba30def5f438f7..09e7fe40fd13b9fb65d5900489554f9b76072eab 100644
+--- a/AUTHORS
++++ b/AUTHORS
+@@ -66,6 +66,7 @@ Ben Newman <ben@meteor.com>
+ Ben Noordhuis <info@bnoordhuis.nl>
+ Benjamin Tan <demoneaux@gmail.com>
+ Bert Belder <bertbelder@gmail.com>
++Brendon Tiszka <btiszka@gmail.com>
+ Burcu Dogan <burcujdogan@gmail.com>
+ Caitlin Potter <caitpotter88@gmail.com>
+ Craig Schlenter <craig.schlenter@gmail.com>
+diff --git a/src/builtins/builtins-array.cc b/src/builtins/builtins-array.cc
+index 938fb96c1d42d8152f974df33c3bed4cc1b542d3..8055d8382d48f618d8fcd3b18f48b2da04fa3f69 100644
+--- a/src/builtins/builtins-array.cc
++++ b/src/builtins/builtins-array.cc
+@@ -1083,6 +1083,9 @@ bool IterateElements(Isolate* isolate, Handle<JSReceiver> receiver,
+     case HOLEY_SEALED_ELEMENTS:
+     case HOLEY_NONEXTENSIBLE_ELEMENTS:
+     case HOLEY_ELEMENTS: {
++      // Disallow execution so the cached elements won't change mid execution.
++      DisallowJavascriptExecution no_js(isolate);
++
+       // Run through the elements FixedArray and use HasElement and GetElement
+       // to check the prototype for missing elements.
+       Handle<FixedArray> elements(FixedArray::cast(array->elements()), isolate);
+@@ -1109,6 +1112,9 @@ bool IterateElements(Isolate* isolate, Handle<JSReceiver> receiver,
+     }
+     case HOLEY_DOUBLE_ELEMENTS:
+     case PACKED_DOUBLE_ELEMENTS: {
++      // Disallow execution so the cached elements won't change mid execution.
++      DisallowJavascriptExecution no_js(isolate);
++
+       // Empty array is FixedArray but not FixedDoubleArray.
+       if (length == 0) break;
+       // Run through the elements FixedArray and use HasElement and GetElement
+@@ -1145,6 +1151,9 @@ bool IterateElements(Isolate* isolate, Handle<JSReceiver> receiver,
+     }
+ 
+     case DICTIONARY_ELEMENTS: {
++      // Disallow execution so the cached dictionary won't change mid execution.
++      DisallowJavascriptExecution no_js(isolate);
++
+       Handle<NumberDictionary> dict(array->element_dictionary(), isolate);
+       std::vector<uint32_t> indices;
+       indices.reserve(dict->Capacity() / 2);
diff --git a/patches/v8/m86-lts_compiler_fix_off-by-one_error_in_kadditivesafeinteger.patch b/patches/v8/m86-lts_compiler_fix_off-by-one_error_in_kadditivesafeinteger.patch
new file mode 100644
index 0000000000000..4a2f10ec16f7e
--- /dev/null
+++ b/patches/v8/m86-lts_compiler_fix_off-by-one_error_in_kadditivesafeinteger.patch
@@ -0,0 +1,37 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Georg Neis <neis@chromium.org>
+Date: Mon, 19 Apr 2021 13:12:46 +0200
+Subject: M86-LTS: [compiler] Fix off-by-one error in kAdditiveSafeInteger
+
+(cherry picked from commit 798fbcb0a3e5a292fb775c37c19d9fe73bbac17c)
+
+No-Try: true
+No-Presubmit: true
+No-Tree-Checks: true
+Bug: chromium:1198705
+Change-Id: I6b3ad82754e1ca72701ce57f16c4f085f8c87f77
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2835705
+Auto-Submit: Georg Neis <neis@chromium.org>
+Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
+Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#74033}
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2850708
+Commit-Queue: Artem Sumaneev <asumaneev@google.com>
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Cr-Commit-Position: refs/branch-heads/8.6@{#87}
+Cr-Branched-From: a64aed2333abf49e494d2a5ce24bbd14fff19f60-refs/heads/8.6.395@{#1}
+Cr-Branched-From: a626bc036236c9bf92ac7b87dc40c9e538b087e3-refs/heads/master@{#69472}
+
+diff --git a/src/compiler/type-cache.h b/src/compiler/type-cache.h
+index b71ea8455d544daccca1ef530bbb7dc735d0df09..54e725c64f7e359df3fd930c06fa59c5f17c95bd 100644
+--- a/src/compiler/type-cache.h
++++ b/src/compiler/type-cache.h
+@@ -80,7 +80,7 @@ class V8_EXPORT_PRIVATE TypeCache final {
+       Type::Union(kPositiveIntegerOrMinusZero, Type::NaN(), zone());
+ 
+   Type const kAdditiveSafeInteger =
+-      CreateRange(-4503599627370496.0, 4503599627370496.0);
++      CreateRange(-4503599627370495.0, 4503599627370495.0);
+   Type const kSafeInteger = CreateRange(-kMaxSafeInteger, kMaxSafeInteger);
+   Type const kAdditiveSafeIntegerOrMinusZero =
+       Type::Union(kAdditiveSafeInteger, Type::MinusZero(), zone());
diff --git a/patches/v8/merged_compiler_fix_a_bug_in_visitspeculativeintegeradditiveop.patch b/patches/v8/merged_compiler_fix_a_bug_in_visitspeculativeintegeradditiveop.patch
new file mode 100644
index 0000000000000..9ede9078f1b1a
--- /dev/null
+++ b/patches/v8/merged_compiler_fix_a_bug_in_visitspeculativeintegeradditiveop.patch
@@ -0,0 +1,44 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Georg Neis <neis@chromium.org>
+Date: Tue, 20 Apr 2021 13:48:07 +0200
+Subject: Merged: [compiler] Fix a bug in VisitSpeculativeIntegerAdditiveOp
+
+Revision: 9313c4ce3f32ad81df1c65becccec7e129181ce3
+
+BUG=chromium:1199345
+NOTRY=true
+NOPRESUBMIT=true
+NOTREECHECKS=true
+R=nicohartmann@chromium.org
+
+Change-Id: I0ee9f13815b1a7d248d4caa506c6930697e1866c
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2839559
+Commit-Queue: Georg Neis <neis@chromium.org>
+Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
+Cr-Commit-Position: refs/branch-heads/9.0@{#41}
+Cr-Branched-From: bd0108b4c88e0d6f2350cb79b5f363fbd02f3eb7-refs/heads/9.0.257@{#1}
+Cr-Branched-From: 349bcc6a075411f1a7ce2d866c3dfeefc2efa39d-refs/heads/master@{#73001}
+
+diff --git a/src/compiler/simplified-lowering.cc b/src/compiler/simplified-lowering.cc
+index 307ad5333869d4d80e59c115a486ed2f07f1798b..97bd328c28e24d25e1813399b798ecdb8a248cfd 100644
+--- a/src/compiler/simplified-lowering.cc
++++ b/src/compiler/simplified-lowering.cc
+@@ -1456,10 +1456,15 @@ class RepresentationSelector {
+     Type right_feedback_type = TypeOf(node->InputAt(1));
+ 
+     // Using Signed32 as restriction type amounts to promising there won't be
+-    // signed overflow. This is incompatible with relying on a Word32
+-    // truncation in order to skip the overflow check.
++    // signed overflow. This is incompatible with relying on a Word32 truncation
++    // in order to skip the overflow check.  Similarly, we must not drop -0 from
++    // the result type unless we deopt for -0 inputs.
+     Type const restriction =
+-        truncation.IsUsedAsWord32() ? Type::Any() : Type::Signed32();
++        truncation.IsUsedAsWord32()
++            ? Type::Any()
++            : (truncation.identify_zeros() == kIdentifyZeros)
++                  ? Type::Signed32OrMinusZero()
++                  : Type::Signed32();
+ 
+     // Handle the case when no int32 checks on inputs are necessary (but
+     // an overflow check is needed on the output). Note that we do not
diff --git a/patches/v8/merged_compiler_mark_jsstoreinarrayliteral_as_needing_a_frame.patch b/patches/v8/merged_compiler_mark_jsstoreinarrayliteral_as_needing_a_frame.patch
new file mode 100644
index 0000000000000..b32e9f7bd479b
--- /dev/null
+++ b/patches/v8/merged_compiler_mark_jsstoreinarrayliteral_as_needing_a_frame.patch
@@ -0,0 +1,34 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Georg Neis <neis@chromium.org>
+Date: Fri, 8 Jan 2021 10:24:06 +0100
+Subject: Merged: [compiler] Mark JSStoreInArrayLiteral as needing a frame
+ state
+
+Revision: b837e0338963611c08344cbb6f655a0abd9238c1
+
+BUG=chromium:1161357
+NOTRY=true
+NOPRESUBMIT=true
+NOTREECHECKS=true
+R=mythria@chromium.org
+
+Change-Id: Ic95dfd20d45d895934dee1592ebf427544eec73b
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2616223
+Reviewed-by: Mythri Alle <mythria@chromium.org>
+Commit-Queue: Georg Neis <neis@chromium.org>
+Cr-Commit-Position: refs/branch-heads/8.8@{#24}
+Cr-Branched-From: 2dbcdc105b963ee2501c82139eef7e0603977ff0-refs/heads/8.8.278@{#1}
+Cr-Branched-From: 366d30c99049b3f1c673f8a93deb9f879d0fa9f0-refs/heads/master@{#71094}
+
+diff --git a/src/compiler/operator-properties.cc b/src/compiler/operator-properties.cc
+index bf0f724a99378dfe42b6f56649979d893942871c..2d80d3df66b35c26b05c2709817434b2655cd017 100644
+--- a/src/compiler/operator-properties.cc
++++ b/src/compiler/operator-properties.cc
+@@ -200,6 +200,7 @@ bool OperatorProperties::HasFrameStateInput(const Operator* op) {
+     case IrOpcode::kJSStoreNamedOwn:
+     case IrOpcode::kJSStoreDataPropertyInLiteral:
+     case IrOpcode::kJSDeleteProperty:
++    case IrOpcode::kJSStoreInArrayLiteral:
+ 
+     // Conversions
+     case IrOpcode::kJSToLength:
diff --git a/patches/v8/merged_deoptimizer_fix_bug_in_optimizedframe_summarize.patch b/patches/v8/merged_deoptimizer_fix_bug_in_optimizedframe_summarize.patch
new file mode 100644
index 0000000000000..1bed8ccc93d16
--- /dev/null
+++ b/patches/v8/merged_deoptimizer_fix_bug_in_optimizedframe_summarize.patch
@@ -0,0 +1,209 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Georg Neis <neis@chromium.org>
+Date: Tue, 23 Mar 2021 17:37:21 +0100
+Subject: Merged: [deoptimizer] Fix bug in OptimizedFrame::Summarize
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Revision: 3353a7d0b017146d543434be4036a81aaf7d25ae
+
+BUG=chromium:1182647
+NOTRY=true
+NOPRESUBMIT=true
+NOTREECHECKS=true
+R=​bmeurer@chromium.org
+
+(cherry picked from commit c0c96b768a7d3463b11403874549e6496529740d)
+
+Change-Id: I86abd6a3f34169be5f99aa9f54bb7bb3706fa85a
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2780300
+Reviewed-by: Georg Neis <neis@chromium.org>
+Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
+Commit-Queue: Georg Neis <neis@chromium.org>
+Cr-Original-Commit-Position: refs/branch-heads/8.9@{#49}
+Cr-Original-Branched-From: 16b9bbbd581c25391981aa03180b76aa60463a3e-refs/heads/8.9.255@{#1}
+Cr-Original-Branched-From: d16a2a688498bd1c3e6a49edb25d8c4ca56232dc-refs/heads/master@{#72039}
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2794427
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Commit-Queue: Artem Sumaneev <asumaneev@google.com>
+Cr-Commit-Position: refs/branch-heads/8.6@{#72}
+Cr-Branched-From: a64aed2333abf49e494d2a5ce24bbd14fff19f60-refs/heads/8.6.395@{#1}
+Cr-Branched-From: a626bc036236c9bf92ac7b87dc40c9e538b087e3-refs/heads/master@{#69472}
+
+diff --git a/src/deoptimizer/deoptimizer.cc b/src/deoptimizer/deoptimizer.cc
+index 804b77c065723de1d27ace6bbbe5456ef42fbad0..b89975ce2edd1a16fd65d6e5cbc0c9d098691691 100644
+--- a/src/deoptimizer/deoptimizer.cc
++++ b/src/deoptimizer/deoptimizer.cc
+@@ -3277,7 +3277,8 @@ Address TranslatedState::DecompressIfNeeded(intptr_t value) {
+   }
+ }
+ 
+-TranslatedState::TranslatedState(const JavaScriptFrame* frame) {
++TranslatedState::TranslatedState(const JavaScriptFrame* frame)
++    : purpose_(kFrameInspection) {
+   int deopt_index = Safepoint::kNoDeoptimizationIndex;
+   DeoptimizationData data =
+       static_cast<const OptimizedFrame*>(frame)->GetDeoptimizationData(
+@@ -3666,25 +3667,63 @@ void TranslatedState::EnsureCapturedObjectAllocatedAt(
+     }
+ 
+     default:
+-      CHECK(map->IsJSObjectMap());
+       EnsureJSObjectAllocated(slot, map);
+-      TranslatedValue* properties_slot = &(frame->values_[value_index]);
+-      value_index++;
++      int remaining_children_count = slot->GetChildrenCount() - 1;
++
++      TranslatedValue* properties_slot = frame->ValueAt(value_index);
++      value_index++, remaining_children_count--;
+       if (properties_slot->kind() == TranslatedValue::kCapturedObject) {
+-        // If we are materializing the property array, make sure we put
+-        // the mutable heap numbers at the right places.
++        // We are materializing the property array, so make sure we put the
++        // mutable heap numbers at the right places.
+         EnsurePropertiesAllocatedAndMarked(properties_slot, map);
+         EnsureChildrenAllocated(properties_slot->GetChildrenCount(), frame,
+                                 &value_index, worklist);
++      } else {
++        CHECK_EQ(properties_slot->kind(), TranslatedValue::kTagged);
+       }
+-      // Make sure all the remaining children (after the map and properties) are
+-      // allocated.
+-      return EnsureChildrenAllocated(slot->GetChildrenCount() - 2, frame,
++
++      TranslatedValue* elements_slot = frame->ValueAt(value_index);
++      value_index++, remaining_children_count--;
++      if (elements_slot->kind() == TranslatedValue::kCapturedObject ||
++          !map->IsJSArrayMap()) {
++        // Handle this case with the other remaining children below.
++        value_index--, remaining_children_count++;
++      } else {
++        CHECK_EQ(elements_slot->kind(), TranslatedValue::kTagged);
++        elements_slot->GetValue();
++        if (purpose_ == kFrameInspection) {
++          // We are materializing a JSArray for the purpose of frame inspection.
++          // If we were to construct it with the above elements value then an
++          // actual deopt later on might create another JSArray instance with
++          // the same elements store. That would violate the key assumption
++          // behind left-trimming.
++          elements_slot->ReplaceElementsArrayWithCopy();
++        }
++      }
++
++      // Make sure all the remaining children (after the map, properties store,
++      // and possibly elements store) are allocated.
++      return EnsureChildrenAllocated(remaining_children_count, frame,
+                                      &value_index, worklist);
+   }
+   UNREACHABLE();
+ }
+ 
++void TranslatedValue::ReplaceElementsArrayWithCopy() {
++  DCHECK_EQ(kind(), TranslatedValue::kTagged);
++  DCHECK_EQ(materialization_state(), TranslatedValue::kFinished);
++  auto elements = Handle<FixedArrayBase>::cast(GetValue());
++  DCHECK(elements->IsFixedArray() || elements->IsFixedDoubleArray());
++  if (elements->IsFixedDoubleArray()) {
++    DCHECK(!elements->IsCowArray());
++    set_storage(isolate()->factory()->CopyFixedDoubleArray(
++        Handle<FixedDoubleArray>::cast(elements)));
++  } else if (!elements->IsCowArray()) {
++    set_storage(isolate()->factory()->CopyFixedArray(
++        Handle<FixedArray>::cast(elements)));
++  }
++}
++
+ void TranslatedState::EnsureChildrenAllocated(int count, TranslatedFrame* frame,
+                                               int* value_index,
+                                               std::stack<int>* worklist) {
+@@ -3749,6 +3788,7 @@ Handle<ByteArray> TranslatedState::AllocateStorageFor(TranslatedValue* slot) {
+ 
+ void TranslatedState::EnsureJSObjectAllocated(TranslatedValue* slot,
+                                               Handle<Map> map) {
++  CHECK(map->IsJSObjectMap());
+   CHECK_EQ(map->instance_size(), slot->GetChildrenCount() * kTaggedSize);
+ 
+   Handle<ByteArray> object_storage = AllocateStorageFor(slot);
+diff --git a/src/deoptimizer/deoptimizer.h b/src/deoptimizer/deoptimizer.h
+index 6c68ea1f96f00df51008a14d3ca7c7e672c47f0f..8f413cd93dc562cbda06e0b8bda5a37a7b4f09b9 100644
+--- a/src/deoptimizer/deoptimizer.h
++++ b/src/deoptimizer/deoptimizer.h
+@@ -117,6 +117,8 @@ class TranslatedValue {
+     return storage_;
+   }
+ 
++  void ReplaceElementsArrayWithCopy();
++
+   Kind kind_;
+   MaterializationState materialization_state_ = kUninitialized;
+   TranslatedState* container_;  // This is only needed for materialization of
+@@ -313,7 +315,15 @@ class TranslatedFrame {
+ 
+ class TranslatedState {
+  public:
+-  TranslatedState() = default;
++  // There are two constructors, each for a different purpose:
++
++  // The default constructor is for the purpose of deoptimizing an optimized
++  // frame (replacing it with one or several unoptimized frames). It is used by
++  // the Deoptimizer.
++  TranslatedState() : purpose_(kDeoptimization) {}
++
++  // This constructor is for the purpose of merely inspecting an optimized
++  // frame. It is used by stack trace generation and various debugging features.
+   explicit TranslatedState(const JavaScriptFrame* frame);
+ 
+   void Prepare(Address stack_frame_pointer);
+@@ -347,6 +357,12 @@ class TranslatedState {
+  private:
+   friend TranslatedValue;
+ 
++  // See the description of the constructors for an explanation of the two
++  // purposes. The only actual difference is that in the kFrameInspection case
++  // extra work is needed to not violate assumptions made by left-trimming.  For
++  // details, see the code around ReplaceElementsArrayWithCopy.
++  enum Purpose { kDeoptimization, kFrameInspection };
++
+   TranslatedFrame CreateNextTranslatedFrame(TranslationIterator* iterator,
+                                             FixedArray literal_array,
+                                             Address fp, FILE* trace_file);
+@@ -404,6 +420,7 @@ class TranslatedState {
+   static Float32 GetFloatSlot(Address fp, int slot_index);
+   static Float64 GetDoubleSlot(Address fp, int slot_index);
+ 
++  Purpose const purpose_;
+   std::vector<TranslatedFrame> frames_;
+   Isolate* isolate_ = nullptr;
+   Address stack_frame_pointer_ = kNullAddress;
+diff --git a/test/mjsunit/compiler/regress-1182647.js b/test/mjsunit/compiler/regress-1182647.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..e0582f7cbfb4f1e5d081443374248c1b5eb30a2e
+--- /dev/null
++++ b/test/mjsunit/compiler/regress-1182647.js
+@@ -0,0 +1,25 @@
++// Copyright 2021 the V8 project authors. All rights reserved.
++// Use of this source code is governed by a BSD-style license that can be
++// found in the LICENSE file.
++
++// Flags: --allow-natives-syntax --verify-heap
++
++function foo() {
++  const arr = Array(1000);
++
++  function bar() {
++    try { ({a: p4nda, b: arr.length}); } catch(e) {}
++  }
++
++  for (var i = 0; i < 25; i++) bar();
++
++  /p4nda/.test({});  // Deopt here.
++
++  arr.shift();
++}
++
++%PrepareFunctionForOptimization(foo);
++foo();
++foo();
++%OptimizeFunctionOnNextCall(foo);
++foo();
diff --git a/patches/v8/merged_deoptimizer_stricter_checks_during_deoptimization.patch b/patches/v8/merged_deoptimizer_stricter_checks_during_deoptimization.patch
new file mode 100644
index 0000000000000..9e953fd37ace7
--- /dev/null
+++ b/patches/v8/merged_deoptimizer_stricter_checks_during_deoptimization.patch
@@ -0,0 +1,69 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Georg Neis <neis@chromium.org>
+Date: Fri, 8 Jan 2021 09:33:18 +0100
+Subject: Merged: [deoptimizer] Stricter checks during deoptimization
+
+Revision: 506e893b812e03dbebe34b11d8aa9d4eb6869d89
+
+BUG=chromium:1161357
+NOTRY=true
+NOPRESUBMIT=true
+NOTREECHECKS=true
+R=mythria@chromium.org
+
+Change-Id: I97b69ae11d85bc0acd4a0c7bd28e1b692433de80
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2616219
+Reviewed-by: Mythri Alle <mythria@chromium.org>
+Commit-Queue: Georg Neis <neis@chromium.org>
+Cr-Commit-Position: refs/branch-heads/8.8@{#23}
+Cr-Branched-From: 2dbcdc105b963ee2501c82139eef7e0603977ff0-refs/heads/8.8.278@{#1}
+Cr-Branched-From: 366d30c99049b3f1c673f8a93deb9f879d0fa9f0-refs/heads/master@{#71094}
+
+diff --git a/src/deoptimizer/deoptimizer.cc b/src/deoptimizer/deoptimizer.cc
+index 066be8211626d2da85684b24b7ff22602f1dde20..804b77c065723de1d27ace6bbbe5456ef42fbad0 100644
+--- a/src/deoptimizer/deoptimizer.cc
++++ b/src/deoptimizer/deoptimizer.cc
+@@ -250,6 +250,7 @@ class ActivationsFinder : public ThreadVisitor {
+           SafepointEntry safepoint = code.GetSafepointEntry(it.frame()->pc());
+           int trampoline_pc = safepoint.trampoline_pc();
+           DCHECK_IMPLIES(code == topmost_, safe_to_deopt_);
++          CHECK_GE(trampoline_pc, 0);
+           // Replace the current pc on the stack with the trampoline.
+           // TODO(v8:10026): avoid replacing a signed pointer.
+           Address* pc_addr = it.frame()->pc_address();
+diff --git a/test/mjsunit/mjsunit.status b/test/mjsunit/mjsunit.status
+index 47b7bee75b6243740acab30520ed544ead6d54e5..cc91da82e6a21ba693400a239fa084c431e545c1 100644
+--- a/test/mjsunit/mjsunit.status
++++ b/test/mjsunit/mjsunit.status
+@@ -73,6 +73,10 @@
+   # Enable once multi-byte prefixed opcodes are correctly handled
+   'regress/wasm/regress-1065599': [SKIP],
+ 
++  # crbug.com/1161357
++  # TODO(solanes): Remove this entry once the underlying issue is fixed.
++  'regress/regress-1161357': [PASS, FAIL],
++
+   ##############################################################################
+   # Tests where variants make no sense.
+   'd8/enable-tracing': [PASS, NO_VARIANTS],
+diff --git a/test/mjsunit/regress/regress-1161357.js b/test/mjsunit/regress/regress-1161357.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..b6f03b92ac970f1f24c8e6aa03b27e849d2ae7bc
+--- /dev/null
++++ b/test/mjsunit/regress/regress-1161357.js
+@@ -0,0 +1,15 @@
++// Copyright 2020 the V8 project authors. All rights reserved.
++// Use of this source code is governed by a BSD-style license that can be
++// found in the LICENSE file.
++
++for (let i = 0; i < 3; i++) {
++  for (let j = 0; j < 32767; j++) {
++    Number;
++  }
++  for (let j = 0; j < 2335; j++) {
++    Number;
++  }
++  var arr = [, ...(new Int16Array(0xffff)), 4294967296];
++  arr.concat(Number, arr)
++}
++eval(``);
diff --git a/patches/v8/merged_interpreter_store_accumulator_to_callee_after_optional.patch b/patches/v8/merged_interpreter_store_accumulator_to_callee_after_optional.patch
new file mode 100644
index 0000000000000..25a1d9d4c36fa
--- /dev/null
+++ b/patches/v8/merged_interpreter_store_accumulator_to_callee_after_optional.patch
@@ -0,0 +1,76 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Mythri A <mythria@chromium.org>
+Date: Thu, 11 Feb 2021 10:09:03 +0000
+Subject: Merged: [interpreter] Store accumulator to callee after optional
+ chain checks
+
+Revision: df98901c19ce17ca995ee6750379b0f004210d68
+
+BUG=chromium:1171954
+NOTRY=true
+NOPRESUBMIT=true
+NOTREECHECKS=true
+R=rmcilroy@chromium.org
+
+Change-Id: Ib62b5cecb1f0c5a31856a26d97464e1ca941bc39
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2689191
+Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
+Cr-Commit-Position: refs/branch-heads/8.8@{#34}
+Cr-Branched-From: 2dbcdc105b963ee2501c82139eef7e0603977ff0-refs/heads/8.8.278@{#1}
+Cr-Branched-From: 366d30c99049b3f1c673f8a93deb9f879d0fa9f0-refs/heads/master@{#71094}
+
+diff --git a/src/interpreter/bytecode-generator.cc b/src/interpreter/bytecode-generator.cc
+index 9a75837063588a36700d72f55757e8833da7f58e..ba73877f4d7c5da69459ee88eed1323e92477df7 100644
+--- a/src/interpreter/bytecode-generator.cc
++++ b/src/interpreter/bytecode-generator.cc
+@@ -4892,8 +4892,9 @@ void BytecodeGenerator::VisitCall(Call* expr) {
+       Property* property = chain->expression()->AsProperty();
+       BuildOptionalChain([&]() {
+         VisitAndPushIntoRegisterList(property->obj(), &args);
+-        VisitPropertyLoadForRegister(args.last_register(), property, callee);
++        VisitPropertyLoad(args.last_register(), property);
+       });
++      builder()->StoreAccumulatorInRegister(callee);
+       break;
+     }
+     case Call::SUPER_CALL:
+diff --git a/test/mjsunit/regress/regress-crbug-1038178.js b/test/mjsunit/regress/regress-crbug-1038178.js
+index 0362f69bcda3ad1807d70de04b31deb8eea13af6..3a84066b837d514bffa5e96c6aca060f85232e02 100644
+--- a/test/mjsunit/regress/regress-crbug-1038178.js
++++ b/test/mjsunit/regress/regress-crbug-1038178.js
+@@ -15,7 +15,7 @@ function opt(){
+     (((function(){})())?.v)()
+ }
+ %PrepareFunctionForOptimization(opt)
+-assertThrows(opt());
+-assertThrows(opt());
++assertThrows(() => opt());
++assertThrows(() => opt());
+ %OptimizeFunctionOnNextCall(opt)
+-assertThrows(opt());
++assertThrows(() => opt());
+diff --git a/test/mjsunit/regress/regress-crbug-1171954.js b/test/mjsunit/regress/regress-crbug-1171954.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..94fbb329bc47b4885d87d3e570a05e02909321c7
+--- /dev/null
++++ b/test/mjsunit/regress/regress-crbug-1171954.js
+@@ -0,0 +1,19 @@
++// Copyright 2021 the V8 project authors. All rights reserved.
++// Use of this source code is governed by a BSD-style license that can be
++// found in the LICENSE file.
++
++// Flags: --always-opt
++
++// This causes the register used by the call in the later try-catch block to be
++// used by the ToName conversion for null which causes a DCHECK fail when
++// compiling. If register allocation changes, this test may no longer reproduce
++// the crash but it is not easy write a proper test because it is linked to
++// register allocation. This test should always work, so shouldn't cause any
++// flakes.
++try {
++  var { [null]: __v_12, } = {};
++} catch (e) {}
++
++try {
++  assertEquals((__v_40?.o?.m)().p);
++} catch (e) {}
diff --git a/patches/v8/merged_squashed_multiple_commits.patch b/patches/v8/merged_squashed_multiple_commits.patch
new file mode 100644
index 0000000000000..e94ad38afb84a
--- /dev/null
+++ b/patches/v8/merged_squashed_multiple_commits.patch
@@ -0,0 +1,202 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Georg Neis <neis@chromium.org>
+Date: Wed, 10 Mar 2021 09:45:36 +0100
+Subject: Merged: Squashed multiple commits.
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Merged: [const-tracking] Mark const field as mutable when reconfiguring
+Revision: 7535b91f7cb22274de734d5da7d0324d8653d626
+
+Merged: [const-tracking] Fix incorrect DCHECK in MapUpdater
+Revision: f95db8916a731e6e5ccc0282616bc907ce06012f
+
+BUG=chromium:1161847,chromium:1185463,v8:9233
+NOTRY=true
+NOPRESUBMIT=true
+NOTREECHECKS=true
+R=​ishell@chromium.org
+
+(cherry picked from commit 56518020bff4d0e8b82cff843c9f618c90084e42)
+
+Change-Id: I7f46a701646e1dd67a049b2aa4ac32d05b6885f3
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2748079
+Commit-Queue: Georg Neis <neis@chromium.org>
+Reviewed-by: Igor Sheludko <ishell@chromium.org>
+Cr-Original-Commit-Position: refs/branch-heads/8.9@{#43}
+Cr-Original-Branched-From: 16b9bbbd581c25391981aa03180b76aa60463a3e-refs/heads/8.9.255@{#1}
+Cr-Original-Branched-From: d16a2a688498bd1c3e6a49edb25d8c4ca56232dc-refs/heads/master@{#72039}
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2794428
+Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
+Commit-Queue: Artem Sumaneev <asumaneev@google.com>
+Cr-Commit-Position: refs/branch-heads/8.6@{#73}
+Cr-Branched-From: a64aed2333abf49e494d2a5ce24bbd14fff19f60-refs/heads/8.6.395@{#1}
+Cr-Branched-From: a626bc036236c9bf92ac7b87dc40c9e538b087e3-refs/heads/master@{#69472}
+
+diff --git a/src/objects/map-updater.cc b/src/objects/map-updater.cc
+index b4b158749381efcf780d5c8ba07c286be6ba6b30..047750ebbd454a5f3f1fce7bc06ac042085245a4 100644
+--- a/src/objects/map-updater.cc
++++ b/src/objects/map-updater.cc
+@@ -121,6 +121,41 @@ Handle<Map> MapUpdater::ReconfigureToDataField(InternalIndex descriptor,
+   PropertyDetails old_details =
+       old_descriptors_->GetDetails(modified_descriptor_);
+ 
++  // If the {descriptor} was "const" data field so far, we need to update the
++  // {old_map_} here, otherwise we could get the constants wrong, i.e.
++  //
++  //   o.x = 1;
++  //   change o.x's attributes to something else
++  //   delete o.x;
++  //   o.x = 2;
++  //
++  // could trick V8 into thinking that `o.x` is still 1 even after the second
++  // assignment.
++  // This situation is similar to what might happen with property deletion.
++  if (old_details.constness() == PropertyConstness::kConst &&
++      old_details.location() == kField &&
++      old_details.attributes() != new_attributes_) {
++    Handle<FieldType> field_type(
++        old_descriptors_->GetFieldType(modified_descriptor_), isolate_);
++    Map::GeneralizeField(isolate_, old_map_, descriptor,
++                         PropertyConstness::kMutable,
++                         old_details.representation(), field_type);
++    // The old_map_'s property must become mutable.
++    // Note, that the {old_map_} and {old_descriptors_} are not expected to be
++    // updated by the generalization if the map is already deprecated.
++    DCHECK_IMPLIES(
++        !old_map_->is_deprecated(),
++        PropertyConstness::kMutable ==
++            old_descriptors_->GetDetails(modified_descriptor_).constness());
++    // Although the property in the old map is marked as mutable we still
++    // treat it as constant when merging with the new path in transition tree.
++    // This is fine because up until this reconfiguration the field was
++    // known to be constant, so it's fair to proceed treating it as such
++    // during this reconfiguration session. The issue is that after the
++    // reconfiguration the original field might become mutable (see the delete
++    // example above).
++  }
++
+   // If property kind is not reconfigured merge the result with
+   // representation/field type from the old descriptor.
+   if (old_details.kind() == new_kind_) {
+diff --git a/test/cctest/test-field-type-tracking.cc b/test/cctest/test-field-type-tracking.cc
+index 740ae05c1eaf8104ad5c3c443b2e39429fc7fca5..99ffbe9bac6094c70ffda3f362ef0d0997d61fc1 100644
+--- a/test/cctest/test-field-type-tracking.cc
++++ b/test/cctest/test-field-type-tracking.cc
+@@ -1081,20 +1081,31 @@ void TestReconfigureDataFieldAttribute_GeneralizeField(
+   Handle<Code> code_field_type = CreateDummyOptimizedCode(isolate);
+   Handle<Code> code_field_repr = CreateDummyOptimizedCode(isolate);
+   Handle<Code> code_field_const = CreateDummyOptimizedCode(isolate);
+-  Handle<Map> field_owner(
+-      map->FindFieldOwner(isolate, InternalIndex(kSplitProp)), isolate);
+-  DependentCode::InstallDependency(isolate,
+-                                   MaybeObjectHandle::Weak(code_field_type),
+-                                   field_owner, DependentCode::kFieldTypeGroup);
+-  DependentCode::InstallDependency(
+-      isolate, MaybeObjectHandle::Weak(code_field_repr), field_owner,
+-      DependentCode::kFieldRepresentationGroup);
+-  DependentCode::InstallDependency(
+-      isolate, MaybeObjectHandle::Weak(code_field_const), field_owner,
+-      DependentCode::kFieldConstGroup);
++  Handle<Code> code_src_field_const = CreateDummyOptimizedCode(isolate);
++  {
++    Handle<Map> field_owner(
++        map->FindFieldOwner(isolate, InternalIndex(kSplitProp)), isolate);
++    DependentCode::InstallDependency(
++        isolate, MaybeObjectHandle::Weak(code_field_type), field_owner,
++        DependentCode::kFieldTypeGroup);
++    DependentCode::InstallDependency(
++        isolate, MaybeObjectHandle::Weak(code_field_repr), field_owner,
++        DependentCode::kFieldRepresentationGroup);
++    DependentCode::InstallDependency(
++        isolate, MaybeObjectHandle::Weak(code_field_const), field_owner,
++        DependentCode::kFieldConstGroup);
++  }
++  {
++    Handle<Map> field_owner(
++        map2->FindFieldOwner(isolate, InternalIndex(kSplitProp)), isolate);
++    DependentCode::InstallDependency(
++        isolate, MaybeObjectHandle::Weak(code_src_field_const), field_owner,
++        DependentCode::kFieldConstGroup);
++  }
+   CHECK(!code_field_type->marked_for_deoptimization());
+   CHECK(!code_field_repr->marked_for_deoptimization());
+   CHECK(!code_field_const->marked_for_deoptimization());
++  CHECK(!code_src_field_const->marked_for_deoptimization());
+ 
+   // Reconfigure attributes of property |kSplitProp| of |map2| to NONE, which
+   // should generalize representations in |map1|.
+@@ -1102,10 +1113,21 @@ void TestReconfigureDataFieldAttribute_GeneralizeField(
+       Map::ReconfigureExistingProperty(isolate, map2, InternalIndex(kSplitProp),
+                                        kData, NONE, PropertyConstness::kConst);
+ 
+-  // |map2| should be left unchanged but marked unstable.
++  // |map2| should be mosly left unchanged but marked unstable and if the
++  // source property was constant it should also be transitioned to kMutable.
+   CHECK(!map2->is_stable());
+   CHECK(!map2->is_deprecated());
+   CHECK_NE(*map2, *new_map);
++  // If the "source" property was const then update constness expectations for
++  // "source" map and ensure the deoptimization dependency was triggered.
++  if (to.constness == PropertyConstness::kConst) {
++    expectations2.SetDataField(kSplitProp, READ_ONLY,
++                               PropertyConstness::kMutable, to.representation,
++                               to.type);
++    CHECK(code_src_field_const->marked_for_deoptimization());
++  } else {
++    CHECK(!code_src_field_const->marked_for_deoptimization());
++  }
+   CHECK(expectations2.Check(*map2));
+ 
+   for (int i = kSplitProp; i < kPropCount; i++) {
+diff --git a/test/mjsunit/regress/regress-crbug-1161847-1.js b/test/mjsunit/regress/regress-crbug-1161847-1.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..282d9b878718105db40fee0283d15227fb724a3a
+--- /dev/null
++++ b/test/mjsunit/regress/regress-crbug-1161847-1.js
+@@ -0,0 +1,19 @@
++// Copyright 2021 the V8 project authors. All rights reserved.
++// Use of this source code is governed by a BSD-style license that can be
++// found in the LICENSE file.
++
++// Flags: --allow-natives-syntax
++
++function foo(first_run) {
++  let o = { x: 0 };
++  if (first_run) assertTrue(%HasOwnConstDataProperty(o, 'x'));
++  Object.defineProperty(o, 'x', { writable: false });
++  delete o.x;
++  o.x = 23;
++  if (first_run) assertFalse(%HasOwnConstDataProperty(o, 'x'));
++}
++%PrepareFunctionForOptimization(foo);
++foo(true);
++foo(false);
++%OptimizeFunctionOnNextCall(foo);
++foo(false);
+diff --git a/test/mjsunit/regress/regress-crbug-1161847-2.js b/test/mjsunit/regress/regress-crbug-1161847-2.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..ec61fee068acea0ea259164816142a01851f3669
+--- /dev/null
++++ b/test/mjsunit/regress/regress-crbug-1161847-2.js
+@@ -0,0 +1,19 @@
++// Copyright 2021 the V8 project authors. All rights reserved.
++// Use of this source code is governed by a BSD-style license that can be
++// found in the LICENSE file.
++
++// Flags: --allow-natives-syntax
++
++function foo(first_run) {
++  let o = { x: 0 };
++  if (first_run) assertTrue(%HasOwnConstDataProperty(o, 'x'));
++  Object.defineProperty(o, 'x', { get() { return 1; }, configurable: true, enumerable: true });
++  delete o.x;
++  o.x = 23;
++  if (first_run) assertFalse(%HasOwnConstDataProperty(o, 'x'));
++}
++%PrepareFunctionForOptimization(foo);
++foo(true);
++foo(false);
++%OptimizeFunctionOnNextCall(foo);
++foo(false);
diff --git a/patches/v8/merged_turbofan_harden_arrayprototypepop_and_arrayprototypeshift.patch b/patches/v8/merged_turbofan_harden_arrayprototypepop_and_arrayprototypeshift.patch
new file mode 100644
index 0000000000000..55c1a6b77337f
--- /dev/null
+++ b/patches/v8/merged_turbofan_harden_arrayprototypepop_and_arrayprototypeshift.patch
@@ -0,0 +1,94 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Georg Neis <neis@chromium.org>
+Date: Sun, 18 Apr 2021 09:46:25 +0200
+Subject: Merged: [turbofan] Harden ArrayPrototypePop and ArrayPrototypeShift
+
+Revision: d4aafa4022b718596b3deadcc3cdcb9209896154
+
+TBR=glazunov@chromium.org
+BUG=chromium:1198696
+NOTRY=true
+NOPRESUBMIT=true
+NOTREECHECKS=true
+
+Change-Id: I1840ffabbed3a3caab75b0abea1d37d9ed446d3f
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2833911
+Reviewed-by: Georg Neis <neis@chromium.org>
+Commit-Queue: Georg Neis <neis@chromium.org>
+Cr-Commit-Position: refs/branch-heads/9.0@{#39}
+Cr-Branched-From: bd0108b4c88e0d6f2350cb79b5f363fbd02f3eb7-refs/heads/9.0.257@{#1}
+Cr-Branched-From: 349bcc6a075411f1a7ce2d866c3dfeefc2efa39d-refs/heads/master@{#73001}
+
+diff --git a/src/compiler/js-call-reducer.cc b/src/compiler/js-call-reducer.cc
+index a2f9aaeb6ff2253ec7626df5f133b08aa6514f19..e1f590f6e499e99d6536ad670c98d55b015221ac 100644
+--- a/src/compiler/js-call-reducer.cc
++++ b/src/compiler/js-call-reducer.cc
+@@ -5147,24 +5147,31 @@ Reduction JSCallReducer::ReduceArrayPrototypePop(Node* node) {
+       }
+ 
+       // Compute the new {length}.
+-      length = graph()->NewNode(simplified()->NumberSubtract(), length,
+-                                jsgraph()->OneConstant());
++      Node* new_length = graph()->NewNode(simplified()->NumberSubtract(),
++                                          length, jsgraph()->OneConstant());
++
++      // This extra check exists solely to break an exploitation technique
++      // that abuses typer mismatches.
++      new_length = efalse = graph()->NewNode(
++          simplified()->CheckBounds(p.feedback(),
++                                    CheckBoundsFlag::kAbortOnOutOfBounds),
++          new_length, length, efalse, if_false);
+ 
+       // Store the new {length} to the {receiver}.
+       efalse = graph()->NewNode(
+           simplified()->StoreField(AccessBuilder::ForJSArrayLength(kind)),
+-          receiver, length, efalse, if_false);
++          receiver, new_length, efalse, if_false);
+ 
+       // Load the last entry from the {elements}.
+       vfalse = efalse = graph()->NewNode(
+           simplified()->LoadElement(AccessBuilder::ForFixedArrayElement(kind)),
+-          elements, length, efalse, if_false);
++          elements, new_length, efalse, if_false);
+ 
+       // Store a hole to the element we just removed from the {receiver}.
+       efalse = graph()->NewNode(
+           simplified()->StoreElement(
+               AccessBuilder::ForFixedArrayElement(GetHoleyElementsKind(kind))),
+-          elements, length, jsgraph()->TheHoleConstant(), efalse, if_false);
++          elements, new_length, jsgraph()->TheHoleConstant(), efalse, if_false);
+     }
+ 
+     control = graph()->NewNode(common()->Merge(2), if_true, if_false);
+@@ -5338,19 +5345,27 @@ Reduction JSCallReducer::ReduceArrayPrototypeShift(Node* node) {
+         }
+ 
+         // Compute the new {length}.
+-        length = graph()->NewNode(simplified()->NumberSubtract(), length,
+-                                  jsgraph()->OneConstant());
++        Node* new_length = graph()->NewNode(simplified()->NumberSubtract(),
++                                            length, jsgraph()->OneConstant());
++
++        // This extra check exists solely to break an exploitation technique
++        // that abuses typer mismatches.
++        new_length = etrue1 = graph()->NewNode(
++            simplified()->CheckBounds(p.feedback(),
++                                      CheckBoundsFlag::kAbortOnOutOfBounds),
++            new_length, length, etrue1, if_true1);
+ 
+         // Store the new {length} to the {receiver}.
+         etrue1 = graph()->NewNode(
+             simplified()->StoreField(AccessBuilder::ForJSArrayLength(kind)),
+-            receiver, length, etrue1, if_true1);
++            receiver, new_length, etrue1, if_true1);
+ 
+         // Store a hole to the element we just removed from the {receiver}.
+         etrue1 = graph()->NewNode(
+             simplified()->StoreElement(AccessBuilder::ForFixedArrayElement(
+                 GetHoleyElementsKind(kind))),
+-            elements, length, jsgraph()->TheHoleConstant(), etrue1, if_true1);
++            elements, new_length, jsgraph()->TheHoleConstant(), etrue1,
++            if_true1);
+       }
+ 
+       Node* if_false1 = graph()->NewNode(common()->IfFalse(), branch1);
diff --git a/patches/v8/merged_wasm-simd_ia32_fix_f64x2_min_max_to_use_registers.patch b/patches/v8/merged_wasm-simd_ia32_fix_f64x2_min_max_to_use_registers.patch
new file mode 100644
index 0000000000000..cdb18dbe35a80
--- /dev/null
+++ b/patches/v8/merged_wasm-simd_ia32_fix_f64x2_min_max_to_use_registers.patch
@@ -0,0 +1,40 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Andrey Belenko <andrey.belenko@gmail.com>
+Date: Tue, 18 May 2021 17:58:48 +0200
+Subject: Merged: [wasm-simd][ia32] Fix f64x2 min max to use registers
+
+We don't have memory alignment yet, so using memory operands will cause
+segv if we try to access the unaligned operands (on non-AVX systems).
+
+The fix here is kept simple (the logic can be cleaned up a bit and
+optimized to not use unique registers), in order to keep the cherry-pick
+and back-merge as small and safe as possible.
+
+(cherry picked from commit 7f2d41fa3748ecc8fc888d93f82d77718b1dd6b0)
+
+Bug: chromium:1204071
+Change-Id: I7d7d177ff096ebd3de399fcf1ec7d9ac57bbb80b
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2872565
+
+diff --git a/src/compiler/backend/ia32/instruction-selector-ia32.cc b/src/compiler/backend/ia32/instruction-selector-ia32.cc
+index 5ed7c24e6bf4d955f126d96b8b4cd467b81ec94b..618a171d834c3e9ac3e2352877a7dfd0c1799431 100644
+--- a/src/compiler/backend/ia32/instruction-selector-ia32.cc
++++ b/src/compiler/backend/ia32/instruction-selector-ia32.cc
+@@ -2181,7 +2181,7 @@ void InstructionSelector::VisitF64x2Min(Node* node) {
+   IA32OperandGenerator g(this);
+   InstructionOperand temps[] = {g.TempSimd128Register()};
+   InstructionOperand operand0 = g.UseUniqueRegister(node->InputAt(0));
+-  InstructionOperand operand1 = g.UseUnique(node->InputAt(1));
++  InstructionOperand operand1 = g.UseUniqueRegister(node->InputAt(1));
+ 
+   if (IsSupported(AVX)) {
+     Emit(kIA32F64x2Min, g.DefineAsRegister(node), operand0, operand1,
+@@ -2196,7 +2196,7 @@ void InstructionSelector::VisitF64x2Max(Node* node) {
+   IA32OperandGenerator g(this);
+   InstructionOperand temps[] = {g.TempSimd128Register()};
+   InstructionOperand operand0 = g.UseUniqueRegister(node->InputAt(0));
+-  InstructionOperand operand1 = g.UseUnique(node->InputAt(1));
++  InstructionOperand operand1 = g.UseUniqueRegister(node->InputAt(1));
+   if (IsSupported(AVX)) {
+     Emit(kIA32F64x2Max, g.DefineAsRegister(node), operand0, operand1,
+          arraysize(temps), temps);
diff --git a/patches/v8/merged_wasm_liftoff_fix_register_usage_for_i64_addi.patch b/patches/v8/merged_wasm_liftoff_fix_register_usage_for_i64_addi.patch
new file mode 100644
index 0000000000000..67e197b089350
--- /dev/null
+++ b/patches/v8/merged_wasm_liftoff_fix_register_usage_for_i64_addi.patch
@@ -0,0 +1,173 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Clemens Backes <clemensb@chromium.org>
+Date: Mon, 9 Nov 2020 17:31:52 +0100
+Subject: Merged: [wasm][liftoff] Fix register usage for i64_addi
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The arm implementation made the assumption that the {lhs} and {dst}
+registers are either the same, or there is no overlap. This assumption
+does not hold.
+ia32 on the other hand has a lot of complicated logic (and unnecessary
+code generation) for different cases of overlap.
+
+This CL fixes the arm issue *and* simplifies the ia32 logic by making
+the arm assumption hold, and using it to eliminate special handling on
+ia32.
+
+R=​thibaudm@chromium.org
+
+(cherry picked from commit 89ca48c907e25ef94a135255092c4e150654c4fc)
+
+Bug: chromium:1146861
+Change-Id: I96c4985fb8ff710b98e009e457444fc8804bce58
+No-Try: true
+No-Presubmit: true
+No-Tree-Checks: true
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2584242
+Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
+Commit-Queue: Clemens Backes <clemensb@chromium.org>
+Cr-Commit-Position: refs/branch-heads/8.6@{#50}
+Cr-Branched-From: a64aed2333abf49e494d2a5ce24bbd14fff19f60-refs/heads/8.6.395@{#1}
+Cr-Branched-From: a626bc036236c9bf92ac7b87dc40c9e538b087e3-refs/heads/master@{#69472}
+
+diff --git a/src/wasm/baseline/arm/liftoff-assembler-arm.h b/src/wasm/baseline/arm/liftoff-assembler-arm.h
+index 94672036de4e6c2592b2dc9fed1dc388bf9e40a0..3cd70d3896e4c1c1bde8d23e189cd3a01e515283 100644
+--- a/src/wasm/baseline/arm/liftoff-assembler-arm.h
++++ b/src/wasm/baseline/arm/liftoff-assembler-arm.h
+@@ -140,6 +140,8 @@ template <void (Assembler::*op)(Register, Register, const Operand&, SBit,
+                                            SBit, Condition)>
+ inline void I64BinopI(LiftoffAssembler* assm, LiftoffRegister dst,
+                       LiftoffRegister lhs, int32_t imm) {
++  // The compiler allocated registers such that either {dst == lhs} or there is
++  // no overlap between the two.
+   DCHECK_NE(dst.low_gp(), lhs.high_gp());
+   (assm->*op)(dst.low_gp(), lhs.low_gp(), Operand(imm), SetCC, al);
+   // Top half of the immediate sign extended, either 0 or -1.
+diff --git a/src/wasm/baseline/ia32/liftoff-assembler-ia32.h b/src/wasm/baseline/ia32/liftoff-assembler-ia32.h
+index 468450aef66e7e5c408057915db38d616ecd42bc..ae98aa34f89fd0c4c10e1c79f21ab2bae932d536 100644
+--- a/src/wasm/baseline/ia32/liftoff-assembler-ia32.h
++++ b/src/wasm/baseline/ia32/liftoff-assembler-ia32.h
+@@ -1023,31 +1023,19 @@ template <void (Assembler::*op)(Register, const Immediate&),
+           void (Assembler::*op_with_carry)(Register, int32_t)>
+ inline void OpWithCarryI(LiftoffAssembler* assm, LiftoffRegister dst,
+                          LiftoffRegister lhs, int32_t imm) {
+-  // First, compute the low half of the result, potentially into a temporary dst
+-  // register if {dst.low_gp()} equals any register we need to
+-  // keep alive for computing the upper half.
+-  LiftoffRegList keep_alive = LiftoffRegList::ForRegs(lhs.high_gp());
+-  Register dst_low = keep_alive.has(dst.low_gp())
+-                         ? assm->GetUnusedRegister(kGpReg, keep_alive).gp()
+-                         : dst.low_gp();
+-
+-  if (dst_low != lhs.low_gp()) assm->mov(dst_low, lhs.low_gp());
+-  (assm->*op)(dst_low, Immediate(imm));
++  // The compiler allocated registers such that either {dst == lhs} or there is
++  // no overlap between the two.
++  DCHECK_NE(dst.low_gp(), lhs.high_gp());
+ 
+-  // Now compute the upper half, while keeping alive the previous result.
+-  keep_alive = LiftoffRegList::ForRegs(dst_low);
+-  Register dst_high = keep_alive.has(dst.high_gp())
+-                          ? assm->GetUnusedRegister(kGpReg, keep_alive).gp()
+-                          : dst.high_gp();
++  // First, compute the low half of the result.
++  if (dst.low_gp() != lhs.low_gp()) assm->mov(dst.low_gp(), lhs.low_gp());
++  (assm->*op)(dst.low_gp(), Immediate(imm));
+ 
+-  if (dst_high != lhs.high_gp()) assm->mov(dst_high, lhs.high_gp());
++  // Now compute the upper half.
++  if (dst.high_gp() != lhs.high_gp()) assm->mov(dst.high_gp(), lhs.high_gp());
+   // Top half of the immediate sign extended, either 0 or -1.
+   int32_t sign_extend = imm < 0 ? -1 : 0;
+-  (assm->*op_with_carry)(dst_high, sign_extend);
+-
+-  // If necessary, move result into the right registers.
+-  LiftoffRegister tmp_result = LiftoffRegister::ForPair(dst_low, dst_high);
+-  if (tmp_result != dst) assm->Move(dst, tmp_result, kWasmI64);
++  (assm->*op_with_carry)(dst.high_gp(), sign_extend);
+ }
+ }  // namespace liftoff
+ 
+diff --git a/src/wasm/baseline/liftoff-compiler.cc b/src/wasm/baseline/liftoff-compiler.cc
+index d2beb398c153f5c123ec9fcc672147cda5283f22..66794af93f899146c8e0ac59493abc95c8254494 100644
+--- a/src/wasm/baseline/liftoff-compiler.cc
++++ b/src/wasm/baseline/liftoff-compiler.cc
+@@ -1154,9 +1154,12 @@ class LiftoffCompiler {
+       int32_t imm = rhs_slot.i32_const();
+ 
+       LiftoffRegister lhs = __ PopToRegister();
++      // Either reuse {lhs} for {dst}, or choose a register (pair) which does
++      // not overlap, for easier code generation.
++      LiftoffRegList pinned = LiftoffRegList::ForRegs(lhs);
+       LiftoffRegister dst = src_rc == result_rc
+-                                ? __ GetUnusedRegister(result_rc, {lhs}, {})
+-                                : __ GetUnusedRegister(result_rc, {});
++                                ? __ GetUnusedRegister(result_rc, {lhs}, pinned)
++                                : __ GetUnusedRegister(result_rc, pinned);
+ 
+       CallEmitFn(fnImm, dst, lhs, imm);
+       __ PushRegister(ValueType::Primitive(result_type), dst);
+diff --git a/test/mjsunit/regress/wasm/regress-1146861.js b/test/mjsunit/regress/wasm/regress-1146861.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..d9d80e58ccc1a1093d414bbafa05ef2cfdc03379
+--- /dev/null
++++ b/test/mjsunit/regress/wasm/regress-1146861.js
+@@ -0,0 +1,56 @@
++// Copyright 2020 the V8 project authors. All rights reserved.
++// Use of this source code is governed by a BSD-style license that can be
++// found in the LICENSE file.
++
++load('test/mjsunit/wasm/wasm-module-builder.js');
++
++const builder = new WasmModuleBuilder();
++builder.addGlobal(kWasmI32, 1);
++builder.addType(makeSig([], [kWasmF64]));
++// Generate function 1 (out of 1).
++builder.addFunction(undefined, 0 /* sig */)
++  .addLocals(kWasmI32, 8).addLocals(kWasmI64, 3)
++  .addBodyWithEnd([
++// signature: d_v
++// body:
++kExprGlobalGet, 0x00,  // global.get
++kExprLocalSet, 0x00,  // local.set
++kExprI32Const, 0x00,  // i32.const
++kExprI32Eqz,  // i32.eqz
++kExprLocalSet, 0x01,  // local.set
++kExprGlobalGet, 0x00,  // global.get
++kExprLocalSet, 0x02,  // local.set
++kExprI32Const, 0x01,  // i32.const
++kExprI32Const, 0x01,  // i32.const
++kExprI32Sub,  // i32.sub
++kExprLocalSet, 0x03,  // local.set
++kExprGlobalGet, 0x00,  // global.get
++kExprLocalSet, 0x04,  // local.set
++kExprI32Const, 0x00,  // i32.const
++kExprI32Eqz,  // i32.eqz
++kExprLocalSet, 0x05,  // local.set
++kExprGlobalGet, 0x00,  // global.get
++kExprLocalSet, 0x06,  // local.set
++kExprI32Const, 0x00,  // i32.const
++kExprI32Const, 0x01,  // i32.const
++kExprI32Sub,  // i32.sub
++kExprLocalSet, 0x07,  // local.set
++kExprBlock, kWasmStmt,  // block @45
++  kExprI32Const, 0x00,  // i32.const
++  kExprIf, kWasmStmt,  // if @49
++    kExprLocalGet, 0x0a,  // local.get
++    kExprLocalSet, 0x08,  // local.set
++  kExprElse,  // else @55
++    kExprNop,  // nop
++    kExprEnd,  // end @57
++  kExprLocalGet, 0x08,  // local.get
++  kExprLocalSet, 0x09,  // local.set
++  kExprLocalGet, 0x09,  // local.get
++  kExprI64Const, 0xff, 0x01,  // i64.const
++  kExprI64Add,  // i64.add
++  kExprDrop,  // drop
++  kExprEnd,  // end @69
++kExprF64Const, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf0, 0x3f,  // f64.const
++kExprEnd,  // end @79
++]);
++builder.instantiate();
diff --git a/patches/v8/perf_make_getpositioninfoslow_faster.patch b/patches/v8/perf_make_getpositioninfoslow_faster.patch
new file mode 100644
index 0000000000000..1f6dcebccc70b
--- /dev/null
+++ b/patches/v8/perf_make_getpositioninfoslow_faster.patch
@@ -0,0 +1,134 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Charles Kerr <charles@charleskerr.com>
+Date: Mon, 26 Oct 2020 16:53:25 -0500
+Subject: perf: make GetPositionInfoSlow() faster
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Halve the number of lookups in ExtractLocationForJSFunction() by calling
+GetPositionInfo() directly instead of making separate calls for column
+and line number.
+
+Improve the efficiency of position lookups in slow mode. The current
+code does a linear walk through the source by calling String::Get() for
+each character. This PR also does a linear walk, but avoids the overhead
+of multiple Get() calls by pulling the String's flat content into a
+local vector and walking through that.
+
+Downstream Electron discussion of this can be found at
+https://github.com/electron/electron/issues/24509
+
+Change-Id: I22b034dc1bfe967164d2f8515a9a0c1d7f043c83
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2496065
+Commit-Queue: Simon Zünd <szuend@chromium.org>
+Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
+Reviewed-by: Simon Zünd <szuend@chromium.org>
+Cr-Commit-Position: refs/heads/master@{#70783}
+
+diff --git a/AUTHORS b/AUTHORS
+index 7c43c60fc13af2a793547a9e5ef689e380ef565f..31a46b9bec0757c78650124793ba30def5f438f7 100644
+--- a/AUTHORS
++++ b/AUTHORS
+@@ -69,6 +69,7 @@ Bert Belder <bertbelder@gmail.com>
+ Burcu Dogan <burcujdogan@gmail.com>
+ Caitlin Potter <caitpotter88@gmail.com>
+ Craig Schlenter <craig.schlenter@gmail.com>
++Charles Kerr <charles@charleskerr.com>
+ Chengzhong Wu <legendecas@gmail.com>
+ Choongwoo Han <cwhan.tunz@gmail.com>
+ Chris Nardi <hichris123@gmail.com>
+diff --git a/src/objects/objects.cc b/src/objects/objects.cc
+index 3ef1067d9f956cba708475aa2beb87dcc5df261b..5e0c831f73b6ccbe40c556497f5ba6fbc9f42b48 100644
+--- a/src/objects/objects.cc
++++ b/src/objects/objects.cc
+@@ -4785,30 +4785,43 @@ bool Script::ContainsAsmModule() {
+ }
+ 
+ namespace {
+-bool GetPositionInfoSlow(const Script script, int position,
+-                         Script::PositionInfo* info) {
+-  if (!script.source().IsString()) return false;
+-  if (position < 0) position = 0;
+ 
+-  String source_string = String::cast(script.source());
++template <typename Char>
++bool GetPositionInfoSlowImpl(const Vector<Char>& source, int position,
++                             Script::PositionInfo* info) {
++  if (position < 0) {
++    position = 0;
++  }
+   int line = 0;
+-  int line_start = 0;
+-  int len = source_string.length();
+-  for (int pos = 0; pos <= len; ++pos) {
+-    if (pos == len || source_string.Get(pos) == '\n') {
+-      if (position <= pos) {
+-        info->line = line;
+-        info->column = position - line_start;
+-        info->line_start = line_start;
+-        info->line_end = pos;
+-        return true;
+-      }
+-      line++;
+-      line_start = pos + 1;
++  const auto begin = std::cbegin(source);
++  const auto end = std::cend(source);
++  for (auto line_begin = begin; line_begin < end;) {
++    const auto line_end = std::find(line_begin, end, '\n');
++    if (position <= (line_end - begin)) {
++      info->line = line;
++      info->column = static_cast<int>((begin + position) - line_begin);
++      info->line_start = static_cast<int>(line_begin - begin);
++      info->line_end = static_cast<int>(line_end - begin);
++      return true;
+     }
++    ++line;
++    line_begin = line_end + 1;
+   }
+   return false;
+ }
++bool GetPositionInfoSlow(const Script script, int position,
++                         const DisallowHeapAllocation& no_gc,
++                         Script::PositionInfo* info) {
++  if (!script.source().IsString()) {
++    return false;
++  }
++  auto source = String::cast(script.source());
++  const auto flat = source.GetFlatContent(no_gc);
++  return flat.IsOneByte()
++             ? GetPositionInfoSlowImpl(flat.ToOneByteVector(), position, info)
++             : GetPositionInfoSlowImpl(flat.ToUC16Vector(), position, info);
++}
++
+ }  // namespace
+ 
+ bool Script::GetPositionInfo(int position, PositionInfo* info,
+@@ -4830,7 +4843,9 @@ bool Script::GetPositionInfo(int position, PositionInfo* info,
+ 
+   if (line_ends().IsUndefined()) {
+     // Slow mode: we do not have line_ends. We have to iterate through source.
+-    if (!GetPositionInfoSlow(*this, position, info)) return false;
++    if (!GetPositionInfoSlow(*this, position, no_allocation, info)) {
++      return false;
++    }
+   } else {
+     DCHECK(line_ends().IsFixedArray());
+     FixedArray ends = FixedArray::cast(line_ends());
+diff --git a/src/profiler/heap-snapshot-generator.cc b/src/profiler/heap-snapshot-generator.cc
+index 2fa4f2e5e841bbbf98580dee241fac00899e780e..8f98451488052ba34a59635b707aa5bd3d086161 100644
+--- a/src/profiler/heap-snapshot-generator.cc
++++ b/src/profiler/heap-snapshot-generator.cc
+@@ -573,9 +573,9 @@ void V8HeapExplorer::ExtractLocationForJSFunction(HeapEntry* entry,
+   Script script = Script::cast(func.shared().script());
+   int scriptId = script.id();
+   int start = func.shared().StartPosition();
+-  int line = script.GetLineNumber(start);
+-  int col = script.GetColumnNumber(start);
+-  snapshot_->AddLocation(entry, scriptId, line, col);
++  Script::PositionInfo info;
++  script.GetPositionInfo(start, &info, Script::WITH_OFFSET);
++  snapshot_->AddLocation(entry, scriptId, info.line, info.column);
+ }
+ 
+ HeapEntry* V8HeapExplorer::AddEntry(HeapObject object) {
diff --git a/patches/v8/regexp_throw_when_length_of_text_nodes_in_alternatives_is_too.patch b/patches/v8/regexp_throw_when_length_of_text_nodes_in_alternatives_is_too.patch
new file mode 100644
index 0000000000000..c58c14684fafb
--- /dev/null
+++ b/patches/v8/regexp_throw_when_length_of_text_nodes_in_alternatives_is_too.patch
@@ -0,0 +1,66 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Patrick Thier <pthier@chromium.org>
+Date: Thu, 21 Jan 2021 10:37:10 +0000
+Subject: Throw when length of text nodes in alternatives is too large.
+
+Offsets in regular expressions are limited to 16 bits.
+It was possible to exceed this limit when emitting greedy loops where
+the length of text nodes exceeded 16 bits, resulting in overflowing
+offsets.
+With this CL we throw a SyntaxError "Regular expression too large" to
+prevent this overflow.
+
+Merge of CL reviewed at https://crrev.com/c/2629286
+
+(cherry picked from commit c9b71fac463dacde93fcc5ad77f56ba6ad7eeae6)
+
+No-Try: true
+No-Presubmit: true
+No-Tree-Checks: true
+Bug: chromium:1166138
+Change-Id: Ica624a243bf9827083ff883d9a976f13c8da02e5
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2642244
+Reviewed-by: Jakob Gruber <jgruber@chromium.org>
+Commit-Queue: Patrick Thier <pthier@chromium.org>
+Cr-Original-Commit-Position: refs/branch-heads/8.9@{#16}
+Cr-Original-Branched-From: 16b9bbbd581c25391981aa03180b76aa60463a3e-refs/heads/8.9.255@{#1}
+Cr-Original-Branched-From: d16a2a688498bd1c3e6a49edb25d8c4ca56232dc-refs/heads/master@{#72039}
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2731531
+Commit-Queue: Victor-Gabriel Savu <vsavu@google.com>
+Reviewed-by: Jana Grill <janagrill@chromium.org>
+Cr-Commit-Position: refs/branch-heads/8.6@{#68}
+Cr-Branched-From: a64aed2333abf49e494d2a5ce24bbd14fff19f60-refs/heads/8.6.395@{#1}
+Cr-Branched-From: a626bc036236c9bf92ac7b87dc40c9e538b087e3-refs/heads/master@{#69472}
+
+diff --git a/src/regexp/regexp-compiler.cc b/src/regexp/regexp-compiler.cc
+index 58d598ca7685b4fc65bb6444b257166743bb1cd0..1a82d925c30a5093eabb93f01f150a0f91fb5e5a 100644
+--- a/src/regexp/regexp-compiler.cc
++++ b/src/regexp/regexp-compiler.cc
+@@ -2535,7 +2535,16 @@ int ChoiceNode::GreedyLoopTextLengthForAlternative(
+     SeqRegExpNode* seq_node = static_cast<SeqRegExpNode*>(node);
+     node = seq_node->on_success();
+   }
+-  return read_backward() ? -length : length;
++  if (read_backward()) {
++    length = -length;
++  }
++  // Check that we can jump by the whole text length. If not, return sentinel
++  // to indicate the we can't construct a greedy loop.
++  if (length < RegExpMacroAssembler::kMinCPOffset ||
++      length > RegExpMacroAssembler::kMaxCPOffset) {
++    return kNodeIsTooComplexForGreedyLoops;
++  }
++  return length;
+ }
+ 
+ void LoopChoiceNode::AddLoopAlternative(GuardedAlternative alt) {
+diff --git a/test/mjsunit/regress/regress-1166138.js b/test/mjsunit/regress/regress-1166138.js
+index b1a5d6b7bb8651cce349fd1685ff76d6379e10e3..f3e4bde83e2769666512d6eda34aca46fbbf17d8 100644
+--- a/test/mjsunit/regress/regress-1166138.js
++++ b/test/mjsunit/regress/regress-1166138.js
+@@ -4,4 +4,4 @@
+ 
+ let badregexp =  "(?:" +  " ".repeat(32768*2)+  ")*";
+ reg = RegExp(badregexp);
+-reg.test()
++assertThrows(() => reg.test(), SyntaxError);
diff --git a/patches/v8/reland_compiler_fix_more_truncation_bugs_in_simplifiedlowering.patch b/patches/v8/reland_compiler_fix_more_truncation_bugs_in_simplifiedlowering.patch
new file mode 100644
index 0000000000000..3ab5ef71910cd
--- /dev/null
+++ b/patches/v8/reland_compiler_fix_more_truncation_bugs_in_simplifiedlowering.patch
@@ -0,0 +1,137 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Andrey Belenko <andrey.belenko@gmail.com>
+Date: Tue, 18 May 2021 22:03:37 +0200
+Subject: Reland "[compiler] Fix more truncation bugs in SimplifiedLowering"
+
+This is a reland of 47077d94492cb604e3a7f02c0d7c3c495ff6b713 without
+changes. The revert was false alarm.
+
+Original change's description:
+> [compiler] Fix more truncation bugs in SimplifiedLowering
+>
+> Bug: chromium:1200490
+> Change-Id: I3555b6d99bdb4b4e7c302a43a82c17e8bff84ebe
+> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2840452
+
+Bug: chromium:1200490
+Change-Id: I75cac59050bc393d157a1ee5bed776c8986a7bbe
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2843817
+
+diff --git a/src/compiler/simplified-lowering.cc b/src/compiler/simplified-lowering.cc
+index 97bd328c28e24d25e1813399b798ecdb8a248cfd..df050006ebe07ce263445d0160038c31f19a562c 100644
+--- a/src/compiler/simplified-lowering.cc
++++ b/src/compiler/simplified-lowering.cc
+@@ -1401,17 +1401,32 @@ class RepresentationSelector {
+     return jsgraph_->simplified();
+   }
+ 
+-  void LowerToCheckedInt32Mul(Node* node, Truncation truncation,
+-                              Type input0_type, Type input1_type) {
+-    // If one of the inputs is positive and/or truncation is being applied,
+-    // there is no need to return -0.
+-    CheckForMinusZeroMode mz_mode =
+-        truncation.IdentifiesZeroAndMinusZero() ||
+-                IsSomePositiveOrderedNumber(input0_type) ||
+-                IsSomePositiveOrderedNumber(input1_type)
+-            ? CheckForMinusZeroMode::kDontCheckForMinusZero
+-            : CheckForMinusZeroMode::kCheckForMinusZero;
+-    NodeProperties::ChangeOp(node, simplified()->CheckedInt32Mul(mz_mode));
++  template <Phase T>
++  void VisitForCheckedInt32Mul(Node* node, Truncation truncation,
++                               Type input0_type, Type input1_type,
++                               UseInfo input_use) {
++    DCHECK_EQ(node->opcode(), IrOpcode::kSpeculativeNumberMultiply);
++    // A -0 input is impossible or will cause a deopt.
++    DCHECK(BothInputsAre(node, Type::Signed32()) ||
++           !input_use.truncation().IdentifiesZeroAndMinusZero());
++
++    CheckForMinusZeroMode mz_mode;
++    Type restriction;
++    if (IsSomePositiveOrderedNumber(input0_type) ||
++        IsSomePositiveOrderedNumber(input1_type)) {
++      mz_mode = CheckForMinusZeroMode::kDontCheckForMinusZero;
++      restriction = Type::Signed32();
++    } else if (truncation.IdentifiesZeroAndMinusZero()) {
++      mz_mode = CheckForMinusZeroMode::kDontCheckForMinusZero;
++      restriction = Type::Signed32OrMinusZero();
++    } else {
++      mz_mode = CheckForMinusZeroMode::kCheckForMinusZero;
++      restriction = Type::Signed32();
++    }
++
++    VisitBinop<T>(node, input_use, MachineRepresentation::kWord32, restriction);
++    if (lower<T>())
++      NodeProperties::ChangeOp(node, simplified()->CheckedInt32Mul(mz_mode));
+   }
+ 
+   void ChangeToInt32OverflowOp(Node* node) {
+@@ -1603,12 +1618,22 @@ class RepresentationSelector {
+         VisitBinop<T>(node, lhs_use, rhs_use, MachineRepresentation::kWord32);
+         if (lower<T>()) DeferReplacement(node, lowering->Int32Mod(node));
+       } else if (BothInputsAre(node, Type::Unsigned32OrMinusZeroOrNaN())) {
++        Type const restriction =
++            truncation.IdentifiesZeroAndMinusZero() &&
++                    TypeOf(node->InputAt(0)).Maybe(Type::MinusZero())
++                ? Type::Unsigned32OrMinusZero()
++                : Type::Unsigned32();
+         VisitBinop<T>(node, lhs_use, rhs_use, MachineRepresentation::kWord32,
+-                      Type::Unsigned32());
++                      restriction);
+         if (lower<T>()) ChangeToUint32OverflowOp(node);
+       } else {
++        Type const restriction =
++            truncation.IdentifiesZeroAndMinusZero() &&
++                    TypeOf(node->InputAt(0)).Maybe(Type::MinusZero())
++                ? Type::Signed32OrMinusZero()
++                : Type::Signed32();
+         VisitBinop<T>(node, lhs_use, rhs_use, MachineRepresentation::kWord32,
+-                      Type::Signed32());
++                      restriction);
+         if (lower<T>()) ChangeToInt32OverflowOp(node);
+       }
+       return;
+@@ -2172,23 +2197,17 @@ class RepresentationSelector {
+           // If both inputs and feedback are int32, use the overflow op.
+           if (hint == NumberOperationHint::kSignedSmall ||
+               hint == NumberOperationHint::kSigned32) {
+-            VisitBinop<T>(node, UseInfo::TruncatingWord32(),
+-                          MachineRepresentation::kWord32, Type::Signed32());
+-            if (lower<T>()) {
+-              LowerToCheckedInt32Mul(node, truncation, input0_type,
+-                                     input1_type);
+-            }
++            VisitForCheckedInt32Mul<T>(node, truncation, input0_type,
++                                       input1_type,
++                                       UseInfo::TruncatingWord32());
+             return;
+           }
+         }
+ 
+         if (hint == NumberOperationHint::kSignedSmall ||
+             hint == NumberOperationHint::kSigned32) {
+-          VisitBinop<T>(node, CheckedUseInfoAsWord32FromHint(hint),
+-                        MachineRepresentation::kWord32, Type::Signed32());
+-          if (lower<T>()) {
+-            LowerToCheckedInt32Mul(node, truncation, input0_type, input1_type);
+-          }
++          VisitForCheckedInt32Mul<T>(node, truncation, input0_type, input1_type,
++                                     CheckedUseInfoAsWord32FromHint(hint));
+           return;
+         }
+ 
+@@ -3895,7 +3914,6 @@ template <>
+ void RepresentationSelector::SetOutput<RETYPE>(
+     Node* node, MachineRepresentation representation, Type restriction_type) {
+   NodeInfo* const info = GetInfo(node);
+-  DCHECK(info->restriction_type().Is(restriction_type));
+   DCHECK(restriction_type.Is(info->restriction_type()));
+   info->set_output(representation);
+ }
+@@ -3905,7 +3923,6 @@ void RepresentationSelector::SetOutput<LOWER>(
+     Node* node, MachineRepresentation representation, Type restriction_type) {
+   NodeInfo* const info = GetInfo(node);
+   DCHECK_EQ(info->representation(), representation);
+-  DCHECK(info->restriction_type().Is(restriction_type));
+   DCHECK(restriction_type.Is(info->restriction_type()));
+   USE(info);
+ }
diff --git a/patches/v8/reland_regexp_hard-crash_on_invalid_offsets_in.patch b/patches/v8/reland_regexp_hard-crash_on_invalid_offsets_in.patch
new file mode 100644
index 0000000000000..d1383c5badf21
--- /dev/null
+++ b/patches/v8/reland_regexp_hard-crash_on_invalid_offsets_in.patch
@@ -0,0 +1,126 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jakob Gruber <jgruber@chromium.org>
+Date: Thu, 14 Jan 2021 07:55:05 +0100
+Subject: Reland "[regexp] Hard-crash on invalid offsets in
+ AdvanceCurrentPosition"
+
+This is a reland of 164cf80bbb0a6e091300bfc4cbbe70a6e6bd3e49
+
+The reland fixes UB (left-shift of negative integer type) with a
+static_cast<uint32_t>.
+
+Original change's description:
+> [regexp] Hard-crash on invalid offsets in AdvanceCurrentPosition
+>
+> Drive-by: Range checks in `Emit(byte, twenty_four_bits)` to ensure the
+> given packed bits actually fit into 24 bits.
+>
+> Bug: chromium:1166138
+> Change-Id: I2e711e6466bb48d7b9897f68dfe621d12bd92508
+> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2625877
+> Commit-Queue: Jakob Gruber <jgruber@chromium.org>
+> Commit-Queue: Leszek Swirski <leszeks@chromium.org>
+> Auto-Submit: Jakob Gruber <jgruber@chromium.org>
+> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
+> Cr-Commit-Position: refs/heads/master@{#72064}
+
+(cherry picked from commit ff8d0f92d423774cf773b5b4fb48b6744971e27a)
+
+No-Try: true
+No-Presubmit: true
+No-Tree-Checks: true
+Tbr: leszeks@chromium.org
+Bug: chromium:1166138
+Change-Id: I514495e14bb99dfc9588fdb4a9f35d67d8d64acb
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2626663
+Reviewed-by: Jakob Gruber <jgruber@chromium.org>
+Commit-Queue: Jakob Gruber <jgruber@chromium.org>
+Cr-Original-Commit-Position: refs/heads/master@{#72088}
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2742954
+Reviewed-by: Jana Grill <janagrill@chromium.org>
+Commit-Queue: Victor-Gabriel Savu <vsavu@google.com>
+Cr-Commit-Position: refs/branch-heads/8.6@{#64}
+Cr-Branched-From: a64aed2333abf49e494d2a5ce24bbd14fff19f60-refs/heads/8.6.395@{#1}
+Cr-Branched-From: a626bc036236c9bf92ac7b87dc40c9e538b087e3-refs/heads/master@{#69472}
+
+diff --git a/src/regexp/regexp-bytecode-generator-inl.h b/src/regexp/regexp-bytecode-generator-inl.h
+index bd906fea153a21ef34b9d8b885130311599070d0..2a6ffec9297f320daced0afae6e908a17d965cc4 100644
+--- a/src/regexp/regexp-bytecode-generator-inl.h
++++ b/src/regexp/regexp-bytecode-generator-inl.h
+@@ -14,13 +14,13 @@ namespace v8 {
+ namespace internal {
+ 
+ void RegExpBytecodeGenerator::Emit(uint32_t byte, uint32_t twenty_four_bits) {
+-  uint32_t word = ((twenty_four_bits << BYTECODE_SHIFT) | byte);
+-  DCHECK(pc_ <= buffer_.length());
+-  if (pc_ + 3 >= buffer_.length()) {
+-    Expand();
+-  }
+-  *reinterpret_cast<uint32_t*>(buffer_.begin() + pc_) = word;
+-  pc_ += 4;
++  DCHECK(is_uint24(twenty_four_bits));
++  Emit32((twenty_four_bits << BYTECODE_SHIFT) | byte);
++}
++
++void RegExpBytecodeGenerator::Emit(uint32_t byte, int32_t twenty_four_bits) {
++  DCHECK(is_int24(twenty_four_bits));
++  Emit32((static_cast<uint32_t>(twenty_four_bits) << BYTECODE_SHIFT) | byte);
+ }
+ 
+ void RegExpBytecodeGenerator::Emit16(uint32_t word) {
+diff --git a/src/regexp/regexp-bytecode-generator.cc b/src/regexp/regexp-bytecode-generator.cc
+index 8abd15384e7399323f6681fbadded1c173b3b9d7..638f6afb2d80723ab41fd3790bc381f4c5289861 100644
+--- a/src/regexp/regexp-bytecode-generator.cc
++++ b/src/regexp/regexp-bytecode-generator.cc
+@@ -161,8 +161,10 @@ bool RegExpBytecodeGenerator::Succeed() {
+ void RegExpBytecodeGenerator::Fail() { Emit(BC_FAIL, 0); }
+ 
+ void RegExpBytecodeGenerator::AdvanceCurrentPosition(int by) {
+-  DCHECK_LE(kMinCPOffset, by);
+-  DCHECK_GE(kMaxCPOffset, by);
++  // TODO(chromium:1166138): Turn back into DCHECKs once the underlying issue
++  // is fixed.
++  CHECK_LE(kMinCPOffset, by);
++  CHECK_GE(kMaxCPOffset, by);
+   advance_current_start_ = pc_;
+   advance_current_offset_ = by;
+   Emit(BC_ADVANCE_CP, by);
+diff --git a/src/regexp/regexp-bytecode-generator.h b/src/regexp/regexp-bytecode-generator.h
+index 9c4b6057c23d318e78278cd1dd550bd51f20ca09..6307a802d9408309fe6e04e94a2409199d5e639f 100644
+--- a/src/regexp/regexp-bytecode-generator.h
++++ b/src/regexp/regexp-bytecode-generator.h
+@@ -86,6 +86,7 @@ class V8_EXPORT_PRIVATE RegExpBytecodeGenerator : public RegExpMacroAssembler {
+   inline void Emit16(uint32_t x);
+   inline void Emit8(uint32_t x);
+   inline void Emit(uint32_t bc, uint32_t arg);
++  inline void Emit(uint32_t bc, int32_t arg);
+   // Bytecode buffer.
+   int length();
+   void Copy(byte* a);
+diff --git a/test/mjsunit/mjsunit.status b/test/mjsunit/mjsunit.status
+index cc91da82e6a21ba693400a239fa084c431e545c1..de802dd6e622919f4dc14fb0afb1c67231289f6f 100644
+--- a/test/mjsunit/mjsunit.status
++++ b/test/mjsunit/mjsunit.status
+@@ -77,6 +77,9 @@
+   # TODO(solanes): Remove this entry once the underlying issue is fixed.
+   'regress/regress-1161357': [PASS, FAIL],
+ 
++  # https://crbug.com/1166138
++  'regress/regress-1166138': SKIP,
++
+   ##############################################################################
+   # Tests where variants make no sense.
+   'd8/enable-tracing': [PASS, NO_VARIANTS],
+diff --git a/test/mjsunit/regress/regress-1166138.js b/test/mjsunit/regress/regress-1166138.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..b1a5d6b7bb8651cce349fd1685ff76d6379e10e3
+--- /dev/null
++++ b/test/mjsunit/regress/regress-1166138.js
+@@ -0,0 +1,7 @@
++// Copyright 2020 the V8 project authors. All rights reserved.
++// Use of this source code is governed by a BSD-style license that can be
++// found in the LICENSE file.
++
++let badregexp =  "(?:" +  " ".repeat(32768*2)+  ")*";
++reg = RegExp(badregexp);
++reg.test()
diff --git a/script/codesign/codesign.cnf b/script/codesign/codesign.cnf
index aad66e16c7b0f..e39b3795700e1 100644
--- a/script/codesign/codesign.cnf
+++ b/script/codesign/codesign.cnf
@@ -1,7 +1,7 @@
 [req]
 default_bits = 4096
 encrypt_key = no
-default_md = 512
+default_md = sha512
 distinguished_name = req_distinguished_name
 prompt = no
 
diff --git a/script/lib/util.py b/script/lib/util.py
index c717ab989d16b..1f02409f40251 100644
--- a/script/lib/util.py
+++ b/script/lib/util.py
@@ -69,9 +69,6 @@ def scoped_env(key, value):
 def download(text, url, path):
   safe_mkdir(os.path.dirname(path))
   with open(path, 'wb') as local_file:
-    if hasattr(ssl, '_create_unverified_context'):
-      ssl._create_default_https_context = ssl._create_unverified_context
-
     print("Downloading %s to %s" % (url, path))
     web_file = urlopen(url)
     info = web_file.info()
diff --git a/script/lint.js b/script/lint.js
index 103265b89a3fc..b92d2d620bf54 100755
--- a/script/lint.js
+++ b/script/lint.js
@@ -23,6 +23,8 @@ const BLACKLIST = new Set([
   ['spec', 'ts-smoke', 'runner.js']
 ].map(tokens => path.join(SOURCE_ROOT, ...tokens)));
 
+const IS_WINDOWS = process.platform === 'win32';
+
 function spawnAndCheckExitCode (cmd, args, opts) {
   opts = Object.assign({ stdio: 'inherit' }, opts);
   const status = childProcess.spawnSync(cmd, args, opts).status;
@@ -30,7 +32,7 @@ function spawnAndCheckExitCode (cmd, args, opts) {
 }
 
 function cpplint (args) {
-  const result = childProcess.spawnSync('cpplint.py', args, { encoding: 'utf8' });
+  const result = childProcess.spawnSync(IS_WINDOWS ? 'cpplint.bat' : 'cpplint.py', args, { encoding: 'utf8', shell: true });
   // cpplint.py writes EVERYTHING to stderr, including status messages
   if (result.stderr) {
     for (const line of result.stderr.split(/[\r\n]+/)) {
@@ -39,8 +41,9 @@ function cpplint (args) {
       }
     }
   }
-  if (result.status) {
-    process.exit(result.status);
+  if (result.status !== 0) {
+    if (result.error) console.error(result.error);
+    process.exit(result.status || 1);
   }
 }
 
diff --git a/script/node-disabled-tests.json b/script/node-disabled-tests.json
index 385e901caed8e..ee4a1c5ea11dd 100644
--- a/script/node-disabled-tests.json
+++ b/script/node-disabled-tests.json
@@ -145,7 +145,6 @@
   "parallel/test-v8-flags",
   "parallel/test-vm-module-basic",
   "parallel/test-vm-parse-abort-on-uncaught-exception",
-  "parallel/test-vm-sigint",
   "parallel/test-vm-sigint-existing-handler",
   "parallel/test-vm-timeout",
   "parallel/test-whatwg-encoding-custom-textdecoder",
diff --git a/script/push-patch.js b/script/push-patch.js
new file mode 100644
index 0000000000000..d1dd4b58611f4
--- /dev/null
+++ b/script/push-patch.js
@@ -0,0 +1,41 @@
+const { createAppAuth } = require('@octokit/auth-app');
+const cp = require('child_process');
+
+if (!process.env.CIRCLE_BRANCH) {
+  console.error('Not building for a specific branch, can\'t autopush a patch');
+  process.exit(1);
+}
+
+if (process.env.CIRCLE_PR_NUMBER) {
+  console.error('Building for a forked PR, can\'t autopush a patch');
+  process.exit(1);
+}
+
+const auth = createAppAuth({
+  appId: process.env.PATCH_UP_APP_ID,
+  privateKey: Buffer.from(process.env.PATCH_UP_PRIVATE_KEY, 'base64').toString('utf8'),
+  installationId: process.env.PATCH_UP_INSTALLATION_ID,
+  clientId: process.env.PATCH_UP_CLIENT_ID,
+  clientSecret: process.env.PATCH_UP_CLIENT_SECRET
+});
+
+async function main () {
+  const installationAuth = await auth({ type: 'installation' });
+  const remoteURL = `https://x-access-token:${installationAuth.token}@github.com/electron/electron.git`;
+  // NEVER LOG THE OUTPUT OF THIS COMMAND
+  // GIT LEAKS THE ACCESS CREDENTIALS IN CONSOLE LOGS
+  const { status } = cp.spawnSync('git', ['push', '--set-upstream', remoteURL], {
+    stdio: 'ignore'
+  });
+  if (status !== 0) {
+    console.error('Failed to push to target branch');
+    process.exit(1);
+  }
+}
+
+if (process.mainModule === module) {
+  main().catch((err) => {
+    console.error(err);
+    process.exit(1);
+  });
+}
diff --git a/script/release/ci-release-build.js b/script/release/ci-release-build.js
index 3b838a7971671..e0eaeb13caa08 100644
--- a/script/release/ci-release-build.js
+++ b/script/release/ci-release-build.js
@@ -270,11 +270,13 @@ async function buildVSTS (targetBranch, options) {
     }
   }
 
+  const vstsToken = process.env.VSTS_TOKEN;
+  assert(vstsToken, `${options.ci} requires the $VSTS_TOKEN environment variable to be provided`);
   const requestOpts = {
     url: `${VSTS_URL}/definitions?api-version=4.1`,
     auth: {
       user: '',
-      password: process.env.VSTS_TOKEN
+      password: vstsToken
     },
     headers: {
       'Content-Type': 'application/json'
diff --git a/script/release/notes/index.js b/script/release/notes/index.js
index 7f8f6b2e15faf..8cb7650fae1a6 100755
--- a/script/release/notes/index.js
+++ b/script/release/notes/index.js
@@ -11,6 +11,7 @@ const notesGenerator = require('./notes.js');
 const semverify = version => version.replace(/^origin\//, '').replace(/[xy]/g, '0').replace(/-/g, '.');
 
 const runGit = async (args) => {
+  console.info(`Running: git ${args.join(' ')}`);
   const response = await GitProcess.exec(args, ELECTRON_DIR);
   if (response.exitCode !== 0) {
     throw new Error(response.stderr.trim());
@@ -19,15 +20,20 @@ const runGit = async (args) => {
 };
 
 const tagIsSupported = tag => tag && !tag.includes('nightly') && !tag.includes('unsupported');
-const tagIsBeta = tag => tag.includes('beta');
+const tagIsBeta = tag => tag && tag.includes('beta');
 const tagIsStable = tag => tagIsSupported(tag) && !tagIsBeta(tag);
 
 const getTagsOf = async (point) => {
-  return (await runGit(['tag', '--merged', point]))
-    .split('\n')
-    .map(tag => tag.trim())
-    .filter(tag => semver.valid(tag))
-    .sort(semver.compare);
+  try {
+    const tags = await runGit(['tag', '--merged', point]);
+    return tags.split('\n')
+      .map(tag => tag.trim())
+      .filter(tag => semver.valid(tag))
+      .sort(semver.compare);
+  } catch (err) {
+    console.error(`Failed to fetch tags for point ${point}`);
+    throw err;
+  }
 };
 
 const getTagsOnBranch = async (point) => {
@@ -41,21 +47,31 @@ const getTagsOnBranch = async (point) => {
 };
 
 const getBranchOf = async (point) => {
-  const branches = (await runGit(['branch', '-a', '--contains', point]))
-    .split('\n')
-    .map(branch => branch.trim())
-    .filter(branch => !!branch);
-  const current = branches.find(branch => branch.startsWith('* '));
-  return current ? current.slice(2) : branches.shift();
+  try {
+    const branches = (await runGit(['branch', '-a', '--contains', point]))
+      .split('\n')
+      .map(branch => branch.trim())
+      .filter(branch => !!branch);
+    const current = branches.find(branch => branch.startsWith('* '));
+    return current ? current.slice(2) : branches.shift();
+  } catch (err) {
+    console.error(`Failed to fetch branch for ${point}: `, err);
+    throw err;
+  }
 };
 
 const getAllBranches = async () => {
-  return (await runGit(['branch', '--remote']))
-    .split('\n')
-    .map(branch => branch.trim())
-    .filter(branch => !!branch)
-    .filter(branch => branch !== 'origin/HEAD -> origin/master')
-    .sort();
+  try {
+    const branches = await runGit(['branch', '--remote']);
+    return branches.split('\n')
+      .map(branch => branch.trim())
+      .filter(branch => !!branch)
+      .filter(branch => branch !== 'origin/HEAD -> origin/master')
+      .sort();
+  } catch (err) {
+    console.error('Failed to fetch all branches');
+    throw err;
+  }
 };
 
 const getStabilizationBranches = async () => {
@@ -120,7 +136,7 @@ const getPreviousPoint = async (point) => {
   }
 };
 
-async function getReleaseNotes (range, newVersion, explicitLinks) {
+async function getReleaseNotes (range, newVersion) {
   const rangeList = range.split('..') || ['HEAD'];
   const to = rangeList.pop();
   const from = rangeList.pop() || (await getPreviousPoint(to));
@@ -129,10 +145,9 @@ async function getReleaseNotes (range, newVersion, explicitLinks) {
     newVersion = to;
   }
 
-  console.log(`Generating release notes between ${from} and ${to} for version ${newVersion}`);
   const notes = await notesGenerator.get(from, to, newVersion);
   const ret = {
-    text: notesGenerator.render(notes, explicitLinks)
+    text: notesGenerator.render(notes)
   };
 
   if (notes.unknown.length) {
@@ -144,7 +159,7 @@ async function getReleaseNotes (range, newVersion, explicitLinks) {
 
 async function main () {
   const opts = minimist(process.argv.slice(2), {
-    boolean: ['explicit-links', 'help'],
+    boolean: ['help'],
     string: ['version']
   });
   opts.range = opts._.shift();
@@ -153,14 +168,13 @@ async function main () {
     console.log(`
 easy usage: ${name} version
 
-full usage: ${name} [begin..]end [--version version] [--explicit-links]
+full usage: ${name} [begin..]end [--version version]
 
  * 'begin' and 'end' are two git references -- tags, branches, etc --
    from which the release notes are generated.
  * if omitted, 'begin' defaults to the previous tag in end's branch.
  * if omitted, 'version' defaults to 'end'. Specifying a version is
    useful if you're making notes on a new version that isn't tagged yet.
- * 'explicit-links' makes every note's issue, commit, or pull an MD link
 
 For example, these invocations are equivalent:
   ${process.argv[1]} v4.0.1
@@ -169,7 +183,7 @@ For example, these invocations are equivalent:
     return 0;
   }
 
-  const notes = await getReleaseNotes(opts.range, opts.version, opts['explicit-links']);
+  const notes = await getReleaseNotes(opts.range, opts.version);
   console.log(notes.text);
   if (notes.warning) {
     throw new Error(notes.warning);
diff --git a/script/release/notes/notes.js b/script/release/notes/notes.js
index 847918eddc66e..d058c17c84c5e 100644
--- a/script/release/notes/notes.js
+++ b/script/release/notes/notes.js
@@ -2,25 +2,22 @@
 
 'use strict';
 
-const childProcess = require('child_process');
 const fs = require('fs');
-const os = require('os');
 const path = require('path');
 
 const { GitProcess } = require('dugite');
 const octokit = require('@octokit/rest')({
   auth: process.env.ELECTRON_GITHUB_TOKEN
 });
-const semver = require('semver');
 
-const { ELECTRON_VERSION, SRC_DIR } = require('../../lib/utils');
+const { ELECTRON_DIR } = require('../../lib/utils');
 
 const MAX_FAIL_COUNT = 3;
 const CHECK_INTERVAL = 5000;
 
-const CACHE_DIR = path.resolve(__dirname, '.cache');
+const TROP_LOGIN = 'trop[bot]';
+
 const NO_NOTES = 'No notes';
-const FOLLOW_REPOS = ['electron/electron', 'electron/node'];
 
 const docTypes = new Set(['doc', 'docs']);
 const featTypes = new Set(['feat', 'feature']);
@@ -28,6 +25,8 @@ const fixTypes = new Set(['fix']);
 const otherTypes = new Set(['spec', 'build', 'test', 'chore', 'deps', 'refactor', 'tools', 'vendor', 'perf', 'style', 'ci']);
 const knownTypes = new Set([...docTypes.keys(), ...featTypes.keys(), ...fixTypes.keys(), ...otherTypes.keys()]);
 
+const getCacheDir = () => process.env.NOTES_CACHE_PATH || path.resolve(__dirname, '.cache');
+
 /**
 ***
 **/
@@ -39,6 +38,13 @@ class GHKey {
     this.repo = repo;
     this.number = number;
   }
+
+  static NewFromPull (pull) {
+    const owner = pull.base.repo.owner.login;
+    const repo = pull.base.repo.name;
+    const number = pull.number;
+    return new GHKey(owner, repo, number);
+  }
 }
 
 class Commit {
@@ -47,10 +53,13 @@ class Commit {
     this.owner = owner; // string
     this.repo = repo; // string
 
-    this.body = null; // string
     this.isBreakingChange = false;
-    this.issueNumber = null; // number
     this.note = null; // string
+
+    // A set of branches to which this change has been merged.
+    // '8-x-y' => GHKey { owner: 'electron', repo: 'electron', number: 23714 }
+    this.trops = new Map(); // Map<string,GHKey>
+
     this.prKeys = new Set(); // GHKey
     this.revertHash = null; // string
     this.semanticType = null; // string
@@ -99,65 +108,31 @@ const getNoteFromClerk = async (ghKey) => {
       return NO_NOTES;
     }
     if (comment.body.startsWith(PERSIST_LEAD)) {
-      return comment.body
+      let lines = comment.body
         .slice(PERSIST_LEAD.length).trim() // remove PERSIST_LEAD
-        .split('\r?\n') // break into lines
+        .split(/\r?\n/) // split into lines
         .map(line => line.trim())
         .filter(line => line.startsWith(QUOTE_LEAD)) // notes are quoted
-        .map(line => line.slice(QUOTE_LEAD.length)) // unquote the lines
-        .join(' ') // join the note lines
+        .map(line => line.slice(QUOTE_LEAD.length)); // unquote the lines
+
+      const firstLine = lines.shift();
+      // indent anything after the first line to ensure that
+      // multiline notes with their own sub-lists don't get
+      // parsed in the markdown as part of the top-level list
+      // (example: https://github.com/electron/electron/pull/25216)
+      lines = lines.map(line => '  ' + line);
+      return [firstLine, ...lines]
+        .join('\n') // join the lines
         .trim();
     }
   }
 };
 
-// copied from https://github.com/electron/clerk/blob/master/src/index.ts#L4-L13
-const OMIT_FROM_RELEASE_NOTES_KEYS = [
-  'no-notes',
-  'no notes',
-  'no_notes',
-  'none',
-  'no',
-  'nothing',
-  'empty',
-  'blank'
-];
-
-const getNoteFromBody = body => {
-  if (!body) {
-    return null;
-  }
-
-  const NOTE_PREFIX = 'Notes: ';
-  const NOTE_HEADER = '#### Release Notes';
-
-  let note = body
-    .split(/\r?\n\r?\n/) // split into paragraphs
-    .map(paragraph => paragraph.trim())
-    .map(paragraph => paragraph.startsWith(NOTE_HEADER) ? paragraph.slice(NOTE_HEADER.length).trim() : paragraph)
-    .find(paragraph => paragraph.startsWith(NOTE_PREFIX));
-
-  if (note) {
-    note = note
-      .slice(NOTE_PREFIX.length)
-      .replace(/<!--.*-->/, '') // '<!-- change summary here-->'
-      .replace(/\r?\n/, ' ') // remove newlines
-      .trim();
-  }
-
-  if (note && OMIT_FROM_RELEASE_NOTES_KEYS.includes(note.toLowerCase())) {
-    return NO_NOTES;
-  }
-
-  return note;
-};
-
 /**
  * Looks for our project's conventions in the commit message:
  *
  * 'semantic: some description' -- sets semanticType, subject
  * 'some description (#99999)' -- sets subject, pr
- * 'Fixes #3333' -- sets issueNumber
  * 'Merge pull request #99999 from ${branchname}' -- sets pr
  * 'This reverts commit ${sha}' -- sets revertHash
  * line starting with 'BREAKING CHANGE' in body -- sets isBreakingChange
@@ -175,13 +150,6 @@ const parseCommitMessage = (commitMessage, commit) => {
     subject = subject.slice(0, pos).trim();
   }
 
-  if (body) {
-    commit.body = body;
-
-    const note = getNoteFromBody(body);
-    if (note) { commit.note = note; }
-  }
-
   // if the subject ends in ' (#dddd)', treat it as a pull request id
   let match;
   if ((match = subject.match(/^(.*)\s\(#(\d+)\)$/))) {
@@ -213,7 +181,6 @@ const parseCommitMessage = (commitMessage, commit) => {
 
   // https://help.github.com/articles/closing-issues-using-keywords/
   if ((match = body.match(/\b(?:close|closes|closed|fix|fixes|fixed|resolve|resolves|resolved|for)\s#(\d+)\b/i))) {
-    commit.issueNumber = parseInt(match[1]);
     commit.semanticType = commit.semanticType || 'fix';
   }
 
@@ -237,32 +204,36 @@ const parseCommitMessage = (commitMessage, commit) => {
 const parsePullText = (pull, commit) => parseCommitMessage(`${pull.data.title}\n\n${pull.data.body}`, commit);
 
 const getLocalCommitHashes = async (dir, ref) => {
-  const args = ['log', '-z', '--format=%H', ref];
-  return (await runGit(dir, args)).split('\0').map(hash => hash.trim());
+  const args = ['log', '--format=%H', ref];
+  return (await runGit(dir, args))
+    .split(/\r?\n/) // split into lines
+    .map(hash => hash.trim());
 };
 
 // return an array of Commits
 const getLocalCommits = async (module, point1, point2) => {
   const { owner, repo, dir } = module;
 
-  const fieldSep = '||';
-  const format = ['%H', '%B'].join(fieldSep);
-  const args = ['log', '-z', '--cherry-pick', '--right-only', '--first-parent', `--format=${format}`, `${point1}..${point2}`];
-  const logs = (await runGit(dir, args)).split('\0').map(field => field.trim());
+  const fieldSep = ',';
+  const format = ['%H', '%s'].join(fieldSep);
+  const args = ['log', '--cherry-pick', '--right-only', '--first-parent', `--format=${format}`, `${point1}..${point2}`];
+  const logs = (await runGit(dir, args))
+    .split(/\r?\n/) // split into lines
+    .map(field => field.trim());
 
   const commits = [];
   for (const log of logs) {
     if (!log) {
       continue;
     }
-    const [hash, message] = log.split(fieldSep, 2).map(field => field.trim());
-    commits.push(parseCommitMessage(message, new Commit(hash, owner, repo)));
+    const [hash, subject] = log.split(fieldSep, 2).map(field => field.trim());
+    commits.push(parseCommitMessage(subject, new Commit(hash, owner, repo)));
   }
   return commits;
 };
 
 const checkCache = async (name, operation) => {
-  const filename = path.resolve(CACHE_DIR, name);
+  const filename = path.resolve(getCacheDir(), name);
   if (fs.existsSync(filename)) {
     return JSON.parse(fs.readFileSync(filename, 'utf8'));
   }
@@ -286,12 +257,42 @@ async function runRetryable (fn, maxRetries) {
     }
   }
   // Silently eat 404s.
-  if (lastError.status !== 404) throw lastError;
+  // Silently eat 422s, which come from "No commit found for SHA"
+  if (lastError.status !== 404 && lastError.status !== 422) throw lastError;
 }
 
+const getPullCacheFilename = ghKey => `${ghKey.owner}-${ghKey.repo}-pull-${ghKey.number}`;
+
+const getCommitPulls = async (owner, repo, hash) => {
+  const name = `${owner}-${repo}-commit-${hash}`;
+  const retryableFunc = () => octokit.repos.listPullRequestsAssociatedWithCommit({ owner, repo, commit_sha: hash });
+  let ret = await checkCache(name, () => runRetryable(retryableFunc, MAX_FAIL_COUNT));
+
+  // only merged pulls belong in release notes
+  if (ret && ret.data) {
+    ret.data = ret.data.filter(pull => pull.merged_at);
+  }
+
+  // cache the pulls
+  if (ret && ret.data) {
+    for (const pull of ret.data) {
+      const cachefile = getPullCacheFilename(GHKey.NewFromPull(pull));
+      const payload = { ...ret, data: pull };
+      await checkCache(cachefile, () => payload);
+    }
+  }
+
+  // ensure the return value has the expected structure, even on failure
+  if (!ret || !ret.data) {
+    ret = { data: [] };
+  }
+
+  return ret;
+};
+
 const getPullRequest = async (ghKey) => {
   const { number, owner, repo } = ghKey;
-  const name = `${owner}-${repo}-pull-${number}`;
+  const name = getPullCacheFilename(ghKey);
   const retryableFunc = () => octokit.pulls.get({ pull_number: number, owner, repo });
   return checkCache(name, () => runRetryable(retryableFunc, MAX_FAIL_COUNT));
 };
@@ -306,10 +307,20 @@ const getComments = async (ghKey) => {
 const addRepoToPool = async (pool, repo, from, to) => {
   const commonAncestor = await getCommonAncestor(repo.dir, from, to);
 
-  // add the commits
-  const oldHashes = await getLocalCommitHashes(repo.dir, from);
-  oldHashes.forEach(hash => { pool.processedHashes.add(hash); });
+  // mark the old branch's commits as old news
+  for (const oldHash of await getLocalCommitHashes(repo.dir, from)) {
+    pool.processedHashes.add(oldHash);
+  }
+
+  // get the new branch's commits and the pulls associated with them
   const commits = await getLocalCommits(repo, commonAncestor, to);
+  for (const commit of commits) {
+    const { owner, repo, hash } = commit;
+    for (const pull of (await getCommitPulls(owner, repo, hash)).data) {
+      commit.prKeys.add(GHKey.NewFromPull(pull));
+    }
+  }
+
   pool.commits.push(...commits);
 
   // add the pulls
@@ -317,95 +328,60 @@ const addRepoToPool = async (pool, repo, from, to) => {
     let prKey;
     for (prKey of commit.prKeys.values()) {
       const pull = await getPullRequest(prKey);
-      if (!pull || !pull.data) break; // couldn't get it
-      if (pool.pulls[prKey.number]) break; // already have it
+      if (!pull || !pull.data) continue; // couldn't get it
       pool.pulls[prKey.number] = pull;
       parsePullText(pull, commit);
     }
   }
 };
 
-/***
-****  Other Repos
-***/
-
-// other repos - gn
-
-const getDepsVariable = async (ref, key) => {
-  // get a copy of that reference point's DEPS file
-  const deps = await runGit(ELECTRON_VERSION, ['show', `${ref}:DEPS`]);
-  const filename = path.resolve(os.tmpdir(), 'DEPS');
-  fs.writeFileSync(filename, deps);
-
-  // query the DEPS file
-  const response = childProcess.spawnSync(
-    'gclient',
-    ['getdep', '--deps-file', filename, '--var', key],
-    { encoding: 'utf8' }
-  );
-
-  // cleanup
-  fs.unlinkSync(filename);
-  return response.stdout.trim();
-};
-
-const getDependencyCommitsGN = async (pool, fromRef, toRef) => {
-  const repos = [{ // just node
-    owner: 'electron',
-    repo: 'node',
-    dir: path.resolve(SRC_DIR, 'third_party', 'electron_node'),
-    deps_variable_name: 'node_version'
-  }];
-
-  for (const repo of repos) {
-    // the 'DEPS' file holds the dependency reference point
-    const key = repo.deps_variable_name;
-    const from = await getDepsVariable(fromRef, key);
-    const to = await getDepsVariable(toRef, key);
-    await addRepoToPool(pool, repo, from, to);
+// @return Map<string,GHKey>
+//   where the key is a branch name (e.g. '7-1-x' or '8-x-y')
+//   and the value is a GHKey to the PR
+async function getMergedTrops (commit, pool) {
+  const branches = new Map();
+
+  for (const prKey of commit.prKeys.values()) {
+    const pull = pool.pulls[prKey.number];
+    const mergedBranches = new Set(
+      ((pull && pull.data && pull.data.labels) ? pull.data.labels : [])
+        .map(label => ((label && label.name) ? label.name : '').match(/merged\/([0-9]+-[x0-9]-[xy0-9])/))
+        .filter(match => match)
+        .map(match => match[1])
+    );
+
+    if (mergedBranches.size > 0) {
+      const isTropComment = (comment) => comment && comment.user && comment.user.login === TROP_LOGIN;
+
+      const ghKey = GHKey.NewFromPull(pull.data);
+      const backportRegex = /backported this PR to "(.*)",\s+please check out #(\d+)/;
+      const getBranchNameAndPullKey = (comment) => {
+        const match = ((comment && comment.body) ? comment.body : '').match(backportRegex);
+        return match ? [match[1], new GHKey(ghKey.owner, ghKey.repo, parseInt(match[2]))] : null;
+      };
+
+      const comments = await getComments(ghKey);
+      ((comments && comments.data) ? comments.data : [])
+        .filter(isTropComment)
+        .map(getBranchNameAndPullKey)
+        .filter(pair => pair)
+        .filter(([branch]) => mergedBranches.has(branch))
+        .forEach(([branch, key]) => branches.set(branch, key));
+    }
   }
-};
-
-// Changes are interesting if they make a change relative to a previous
-// release in the same series. For example if you fix a Y.0.0 bug, that
-// should be included in the Y.0.1 notes even if it's also tropped back
-// to X.0.1.
-//
-// The phrase 'previous release' is important: if this is the first
-// prerelease or first stable release in a series, we omit previous
-// branches' changes. Otherwise we will have an overwhelmingly long
-// list of mostly-irrelevant changes.
-const shouldIncludeMultibranchChanges = (version) => {
-  let show = true;
-
-  if (semver.valid(version)) {
-    const prerelease = semver.prerelease(version);
-    show = prerelease
-      ? parseInt(prerelease.pop()) > 1
-      : semver.patch(version) > 0;
-  }
-
-  return show;
-};
 
-function getOldestMajorBranchOfPull (pull) {
-  return pull.data.labels
-    .map(label => label.name.match(/merged\/(\d+)-(\d+)-x/) || label.name.match(/merged\/(\d+)-x-y/))
-    .filter(label => !!label)
-    .map(label => parseInt(label[1]))
-    .filter(major => !!major)
-    .sort()
-    .shift();
+  return branches;
 }
 
-function getOldestMajorBranchOfCommit (commit, pool) {
-  return [ ...commit.prKeys.values() ]
-    .map(prKey => pool.pulls[prKey.number])
-    .filter(pull => !!pull)
-    .map(pull => getOldestMajorBranchOfPull(pull))
-    .filter(major => !!major)
-    .sort()
-    .shift();
+// @return the shorthand name of the branch that `ref` is on,
+//   e.g. a ref of '10.0.0-beta.1' will return '10-x-y'
+async function getBranchNameOfRef (ref, dir) {
+  return (await runGit(dir, ['branch', '--all', '--contains', ref, '--sort', 'version:refname']))
+    .split(/\r?\n/) // split into lines
+    .shift() // we sorted by refname and want the first result
+    .match(/(?:\s?\*\s){0,1}(.*)/)[1] // if present, remove leading '* ' in case we're currently in that branch
+    .match(/(?:.*\/)?(.*)/)[1] // 'remote/origins/10-x-y' -> '10-x-y'
+    .trim();
 }
 
 /***
@@ -413,26 +389,20 @@ function getOldestMajorBranchOfCommit (commit, pool) {
 ***/
 
 const getNotes = async (fromRef, toRef, newVersion) => {
-  if (!fs.existsSync(CACHE_DIR)) {
-    fs.mkdirSync(CACHE_DIR);
+  const cacheDir = getCacheDir();
+  if (!fs.existsSync(cacheDir)) {
+    fs.mkdirSync(cacheDir);
   }
 
   const pool = new Pool();
+  const toBranch = await getBranchNameOfRef(toRef, ELECTRON_DIR);
+
+  console.log(`Generating release notes between '${fromRef}' and '${toRef}' for version '${newVersion}' in branch '${toBranch}'`);
 
   // get the electron/electron commits
-  const electron = { owner: 'electron', repo: 'electron', dir: ELECTRON_VERSION };
+  const electron = { owner: 'electron', repo: 'electron', dir: ELECTRON_DIR };
   await addRepoToPool(pool, electron, fromRef, toRef);
 
-  // Don't include submodules if comparing across major versions;
-  // there's just too much churn otherwise.
-  const includeDeps = semver.valid(fromRef) &&
-                      semver.valid(toRef) &&
-                      semver.major(fromRef) === semver.major(toRef);
-
-  if (includeDeps) {
-    await getDependencyCommitsGN(pool, fromRef, toRef);
-  }
-
   // remove any old commits
   pool.commits = pool.commits.filter(commit => !pool.processedHashes.has(commit.hash));
 
@@ -457,27 +427,24 @@ const getNotes = async (fromRef, toRef, newVersion) => {
   // ensure the commit has a note
   for (const commit of pool.commits) {
     for (const prKey of commit.prKeys.values()) {
-      commit.note = commit.note || await getNoteFromClerk(prKey);
       if (commit.note) {
         break;
       }
+      commit.note = await getNoteFromClerk(prKey);
     }
-    // use a fallback note in case someone missed a 'Notes' comment
-    commit.note = commit.note || commit.subject;
   }
 
   // remove non-user-facing commits
   pool.commits = pool.commits
+    .filter(commit => commit && commit.note)
     .filter(commit => commit.note !== NO_NOTES)
-    .filter(commit => !((commit.note || commit.subject).match(/^[Bb]ump v\d+\.\d+\.\d+/)));
+    .filter(commit => commit.note.match(/^[Bb]ump v\d+\.\d+\.\d+/) === null);
 
-  if (!shouldIncludeMultibranchChanges(newVersion)) {
-    const currentMajor = semver.parse(newVersion).major;
-    pool.commits = pool.commits
-      .filter(commit => getOldestMajorBranchOfCommit(commit, pool) >= currentMajor);
+  for (const commit of pool.commits) {
+    commit.trops = await getMergedTrops(commit, pool);
   }
 
-  pool.commits = removeSupercededChromiumUpdates(pool.commits);
+  pool.commits = removeSupercededStackUpdates(pool.commits);
 
   const notes = {
     breaking: [],
@@ -486,7 +453,8 @@ const getNotes = async (fromRef, toRef, newVersion) => {
     fix: [],
     other: [],
     unknown: [],
-    name: newVersion
+    name: newVersion,
+    toBranch
   };
 
   pool.commits.forEach(commit => {
@@ -511,50 +479,76 @@ const getNotes = async (fromRef, toRef, newVersion) => {
   return notes;
 };
 
-const removeSupercededChromiumUpdates = (commits) => {
-  const chromiumRegex = /^Updated Chromium to \d+\.\d+\.\d+\.\d+/;
-  const updates = commits.filter(commit => (commit.note || commit.subject).match(chromiumRegex));
-  const keepers = commits.filter(commit => !updates.includes(commit));
+const removeSupercededStackUpdates = (commits) => {
+  const updateRegex = /^Updated ([a-zA-Z.]+) to v?([\d.]+)/;
+  const notupdates = [];
 
-  // keep the newest update.
-  if (updates.length) {
-    const compare = (a, b) => (a.note || a.subject).localeCompare(b.note || b.subject);
-    keepers.push(updates.sort(compare).pop());
+  const newest = {};
+  for (const commit of commits) {
+    const match = (commit.note || commit.subject).match(updateRegex);
+    if (!match) {
+      notupdates.push(commit);
+      continue;
+    }
+    const [, dep, version] = match;
+    if (!newest[dep] || newest[dep].version < version) {
+      newest[dep] = { commit, version };
+    }
   }
 
-  return keepers;
+  return [...notupdates, ...Object.values(newest).map(o => o.commit)];
 };
 
 /***
 ****  Render
 ***/
 
-const renderLink = (commit, explicitLinks) => {
-  let link;
-  const { owner, repo } = commit;
-  const keyIt = commit.prKeys.values().next();
-  if (keyIt.done) /* no PRs */ {
-    const { hash } = commit;
-    const url = `https://github.com/${owner}/${repo}/commit/${hash}`;
-    const text = owner === 'electron' && repo === 'electron'
-      ? `${hash.slice(0, 8)}`
-      : `${owner}/${repo}@${hash.slice(0, 8)}`;
-    link = explicitLinks ? `[${text}](${url})` : text;
-  } else {
-    const { number } = keyIt.value;
-    const url = `https://github.com/${owner}/${repo}/pull/${number}`;
-    const text = owner === 'electron' && repo === 'electron'
-      ? `#${number}`
-      : `${owner}/${repo}#${number}`;
-    link = explicitLinks ? `[${text}](${url})` : text;
-  }
-  return link;
-};
+// @return the pull request's GitHub URL
+const buildPullURL = ghKey => `https://github.com/${ghKey.owner}/${ghKey.repo}/pull/${ghKey.number}`;
+
+const renderPull = ghKey => `[#${ghKey.number}](${buildPullURL(ghKey)})`;
+
+// @return the commit's GitHub URL
+const buildCommitURL = commit => `https://github.com/${commit.owner}/${commit.repo}/commit/${commit.hash}`;
+
+const renderCommit = commit => `[${commit.hash.slice(0, 8)}](${buildCommitURL(commit)})`;
+
+// @return a markdown link to the PR if available; otherwise, the git commit
+function renderLink (commit) {
+  const maybePull = commit.prKeys.values().next();
+  return maybePull.value ? renderPull(maybePull.value) : renderCommit(commit);
+}
 
-const renderCommit = (commit, explicitLinks) => {
-  // clean up the note
-  let note = commit.note || commit.subject;
+// @return a terser branch name,
+//   e.g. '7-2-x' -> '7.2' and '8-x-y' -> '8'
+const renderBranchName = name => name.replace(/-[a-zA-Z]/g, '').replace('-', '.');
+
+const renderTrop = (branch, ghKey) => `[${renderBranchName(branch)}](${buildPullURL(ghKey)})`;
+
+// @return markdown-formatted links to other branches' trops,
+//   e.g. "(Also in 7.2, 8, 9)"
+function renderTrops (commit, excludeBranch) {
+  const body = [...commit.trops.entries()]
+    .filter(([branch]) => branch !== excludeBranch)
+    .sort(([branchA], [branchB]) => parseInt(branchA) - parseInt(branchB)) // sort by semver major
+    .map(([branch, key]) => renderTrop(branch, key))
+    .join(', ');
+  return body ? `<span style="font-size:small;">(Also in ${body})</span>` : body;
+}
+
+// @return a slightly cleaned-up human-readable change description
+function renderDescription (commit) {
+  let note = commit.note || commit.subject || '';
   note = note.trim();
+
+  // release notes bullet point every change, so if the note author
+  // manually started the content with a bullet point, that will confuse
+  // the markdown renderer -- remove the redundant bullet point
+  // (example: https://github.com/electron/electron/pull/25216)
+  if (note.startsWith('*')) {
+    note = note.slice(1).trim();
+  }
+
   if (note.length !== 0) {
     note = note[0].toUpperCase() + note.substr(1);
 
@@ -590,30 +584,24 @@ const renderCommit = (commit, explicitLinks) => {
     }
   }
 
-  const link = renderLink(commit, explicitLinks);
+  return note;
+}
 
-  return { note, link };
-};
+// @return markdown-formatted release note line item,
+//   e.g. '* Fixed a foo. #12345 (Also in 7.2, 8, 9)'
+const renderNote = (commit, excludeBranch) =>
+  `* ${renderDescription(commit)} ${renderLink(commit)} ${renderTrops(commit, excludeBranch)}\n`;
 
-const renderNotes = (notes, explicitLinks) => {
+const renderNotes = (notes) => {
   const rendered = [`# Release Notes for ${notes.name}\n\n`];
 
   const renderSection = (title, commits) => {
-    if (commits.length === 0) {
-      return;
-    }
-    const notes = new Map();
-    for (const note of commits.map(commit => renderCommit(commit, explicitLinks))) {
-      if (!notes.has(note.note)) {
-        notes.set(note.note, [note.link]);
-      } else {
-        notes.get(note.note).push(note.link);
-      }
+    if (commits.length > 0) {
+      rendered.push(
+        `## ${title}\n\n`,
+        ...(commits.map(commit => renderNote(commit, notes.toBranch)).sort())
+      );
     }
-    rendered.push(`## ${title}\n\n`);
-    const lines = [];
-    notes.forEach((links, key) => lines.push(` * ${key} ${links.map(link => link.toString()).sort().join(', ')}\n`));
-    rendered.push(...lines.sort(), '\n');
   };
 
   renderSection('Breaking Changes', notes.breaking);
@@ -622,7 +610,7 @@ const renderNotes = (notes, explicitLinks) => {
   renderSection('Other Changes', notes.other);
 
   if (notes.docs.length) {
-    const docs = notes.docs.map(commit => renderLink(commit, explicitLinks)).sort();
+    const docs = notes.docs.map(commit => renderLink(commit)).sort();
     rendered.push('## Documentation\n\n', ` * Documentation changes: ${docs.join(', ')}\n`, '\n');
   }
 
diff --git a/script/release/prepare-release.js b/script/release/prepare-release.js
index cc1911d62a9f3..92ff6655ae73c 100755
--- a/script/release/prepare-release.js
+++ b/script/release/prepare-release.js
@@ -211,4 +211,8 @@ async function prepareRelease (isBeta, notesOnly) {
   }
 }
 
-prepareRelease(!args.stable, args.notesOnly);
+prepareRelease(!args.stable, args.notesOnly)
+  .catch((err) => {
+    console.error(err);
+    process.exit(1);
+  });
diff --git a/script/release/publish-to-npm.js b/script/release/publish-to-npm.js
index 1ec37ad62f5aa..c6c8c4e4dde96 100644
--- a/script/release/publish-to-npm.js
+++ b/script/release/publish-to-npm.js
@@ -150,7 +150,13 @@ new Promise((resolve, reject) => {
       resolve(tarballPath);
     });
   })
-  .then((tarballPath) => childProcess.execSync(`npm publish ${tarballPath} --tag ${npmTag} --otp=${process.env.ELECTRON_NPM_OTP}`))
+  .then((tarballPath) => {
+    const existingVersionJSON = childProcess.execSync(`npm view electron@${rootPackageJson.version} --json`).toString('utf-8');
+    // It's possible this is a re-run and we already have published the package, if not we just publish like normal
+    if (!existingVersionJSON) {
+      childProcess.execSync(`npm publish ${tarballPath} --tag ${npmTag} --otp=${process.env.ELECTRON_NPM_OTP}`);
+    }
+  })
   .then(() => {
     const currentTags = JSON.parse(childProcess.execSync('npm show electron dist-tags --json').toString());
     const localVersion = rootPackageJson.version;
diff --git a/script/release/uploaders/upload-node-checksums.py b/script/release/uploaders/upload-node-checksums.py
index 1774308320c10..41d509f2a6f72 100755
--- a/script/release/uploaders/upload-node-checksums.py
+++ b/script/release/uploaders/upload-node-checksums.py
@@ -88,7 +88,7 @@ def create_checksum(algorithm, directory, filename, files):
   lines = []
   for path in files:
     h = hashlib.new(algorithm)
-    with open(path, 'r') as f:
+    with open(path, 'rb') as f:
       h.update(f.read())
       lines.append(h.hexdigest() + '  ' + os.path.relpath(path, directory))
 
diff --git a/script/release/uploaders/upload-symbols.py b/script/release/uploaders/upload-symbols.py
index 7b1acbb86ca4c..b85ab5cdd498e 100755
--- a/script/release/uploaders/upload-symbols.py
+++ b/script/release/uploaders/upload-symbols.py
@@ -29,6 +29,8 @@ def is_fs_case_sensitive():
   os.path.join(RELEASE_DIR, '{0}.exe.pdb'.format(PROJECT_NAME))
 ]
 
+PDB_LIST += glob.glob(os.path.join(RELEASE_DIR, '*.dll.pdb'))
+
 NPX_CMD = "npx"
 if sys.platform == "win32":
     NPX_CMD += ".cmd"
diff --git a/script/release/uploaders/upload-to-github.js b/script/release/uploaders/upload-to-github.js
index 2ca28d911774e..4d75f87c58ff9 100644
--- a/script/release/uploaders/upload-to-github.js
+++ b/script/release/uploaders/upload-to-github.js
@@ -50,7 +50,7 @@ function uploadToGitHub () {
       console.log(`Error uploading ${fileName} to GitHub, will retry.  Error was:`, err);
       retry++;
 
-      octokit.repos.listAssetsForRelease({
+      octokit.repos.listReleaseAssets({
         owner: 'electron',
         repo: targetRepo,
         release_id: releaseId,
diff --git a/script/release/uploaders/upload.py b/script/release/uploaders/upload.py
index abf2d3d8ef1ed..c6f1b8bb5f63a 100755
--- a/script/release/uploaders/upload.py
+++ b/script/release/uploaders/upload.py
@@ -20,7 +20,7 @@
 from io import StringIO
 from zipfile import ZipFile
 from lib.config import PLATFORM, get_target_arch,  get_env_var, s3_config, \
-                       get_zip_name
+                       get_zip_name, enable_verbose_mode, get_platform_key
 from lib.util import get_electron_branding, execute, get_electron_version, \
                      scoped_cwd, s3put, get_electron_exec, \
                      get_out_dir, SRC_DIR, ELECTRON_DIR
@@ -44,7 +44,9 @@
 
 def main():
   args = parse_args()
-  if  args.upload_to_s3:
+  if args.verbose:
+    enable_verbose_mode()
+  if args.upload_to_s3:
     utcnow = datetime.datetime.utcnow()
     args.upload_timestamp = utcnow.strftime('%Y%m%d')
 
@@ -76,11 +78,13 @@ def main():
     shutil.copy2(os.path.join(OUT_DIR, 'symbols.zip'), symbols_zip)
     upload_electron(release, symbols_zip, args)
   if PLATFORM == 'darwin':
-    api_path = os.path.join(ELECTRON_DIR, 'electron-api.json')
-    upload_electron(release, api_path, args)
+    if get_platform_key() == 'darwin' and get_target_arch() == 'x64':
+      api_path = os.path.join(ELECTRON_DIR, 'electron-api.json')
+      upload_electron(release, api_path, args)
+
+      ts_defs_path = os.path.join(ELECTRON_DIR, 'electron.d.ts')
+      upload_electron(release, ts_defs_path, args)
 
-    ts_defs_path = os.path.join(ELECTRON_DIR, 'electron.d.ts')
-    upload_electron(release, ts_defs_path, args)
     dsym_zip = os.path.join(OUT_DIR, DSYM_NAME)
     shutil.copy2(os.path.join(OUT_DIR, 'dsym.zip'), dsym_zip)
     upload_electron(release, dsym_zip, args)
@@ -149,6 +153,9 @@ def parse_args():
                       action='store_true',
                       default=False,
                       required=False)
+  parser.add_argument('--verbose',
+                      action='store_true',
+                      help='Mooooorreee logs')
   return parser.parse_args()
 
 
diff --git a/script/start-goma.ps1 b/script/start-goma.ps1
index d53fc2965cd71..f63d46c7e0fc0 100755
--- a/script/start-goma.ps1
+++ b/script/start-goma.ps1
@@ -1,10 +1,10 @@
-param([string]$gomaDir=$PWD)
-$cmdPath = Join-Path -Path $gomaDir -ChildPath "goma_ctl.py" 
-Start-Process -FilePath cmd -ArgumentList "/C", "python", "$cmdPath", "ensure_start"
-$timedOut = $false; $waitTime = 0; $waitIncrement = 5; $timeout=120;
-Do { sleep $waitIncrement; $timedOut = (($waitTime+=$waitIncrement) -gt $timeout); iex "$gomaDir\gomacc.exe port 2" > $null; } Until(($LASTEXITCODE -eq 0) -or $timedOut) 
-if ($timedOut) { 
-    write-error 'Timed out waiting for goma to start'; exit 1; 
-} else {
-    Write-Output "Successfully started goma!"
-}
+param([string]$gomaDir=$PWD)
+$cmdPath = Join-Path -Path $gomaDir -ChildPath "goma_ctl.py" 
+Start-Process -FilePath cmd -ArgumentList "/C", "python", "$cmdPath", "ensure_start"
+$timedOut = $false; $waitTime = 0; $waitIncrement = 5; $timeout=120;
+Do { sleep $waitIncrement; $timedOut = (($waitTime+=$waitIncrement) -gt $timeout); iex "$gomaDir\gomacc.exe port 2" > $null; } Until(($LASTEXITCODE -eq 0) -or $timedOut) 
+if ($timedOut) { 
+    write-error 'Timed out waiting for goma to start'; exit 1; 
+} else {
+    Write-Output "Successfully started goma!"
+}
diff --git a/shell/app/electron_main_delegate.cc b/shell/app/electron_main_delegate.cc
index c174594750853..0b24cde996d67 100644
--- a/shell/app/electron_main_delegate.cc
+++ b/shell/app/electron_main_delegate.cc
@@ -8,10 +8,6 @@
 #include <memory>
 #include <string>
 
-#if defined(OS_LINUX)
-#include <glib.h>  // for g_setenv()
-#endif
-
 #include "base/command_line.h"
 #include "base/debug/stack_trace.h"
 #include "base/environment.h"
@@ -39,7 +35,6 @@
 #include "shell/renderer/electron_renderer_client.h"
 #include "shell/renderer/electron_sandboxed_renderer_client.h"
 #include "shell/utility/electron_content_utility_client.h"
-#include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/ui_base_switches.h"
 
@@ -112,12 +107,8 @@ void InvalidParameterHandler(const wchar_t*,
 }
 #endif
 
-}  // namespace
-
 // TODO(nornagon): move path provider overriding to its own file in
 // shell/common
-namespace electron {
-
 bool GetDefaultCrashDumpsPath(base::FilePath* path) {
   base::FilePath cur;
   if (!base::PathService::Get(DIR_USER_DATA, &cur))
@@ -147,12 +138,11 @@ void RegisterPathProvider() {
                                       PATH_END);
 }
 
-}  // namespace electron
+}  // namespace
 
-void LoadResourceBundle(const std::string& locale) {
+std::string LoadResourceBundle(const std::string& locale) {
   const bool initialized = ui::ResourceBundle::HasSharedInstance();
-  if (initialized)
-    ui::ResourceBundle::CleanupSharedInstance();
+  DCHECK(!initialized);
 
   // Load other resource files.
   base::FilePath pak_dir;
@@ -163,12 +153,12 @@ void LoadResourceBundle(const std::string& locale) {
   base::PathService::Get(base::DIR_MODULE, &pak_dir);
 #endif
 
-  ui::ResourceBundle::InitSharedInstanceWithLocale(
+  std::string loaded_locale = ui::ResourceBundle::InitSharedInstanceWithLocale(
       locale, nullptr, ui::ResourceBundle::LOAD_COMMON_RESOURCES);
   ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
-  bundle.ReloadLocaleResources(locale);
   bundle.AddDataPackFromPath(pak_dir.Append(FILE_PATH_LITERAL("resources.pak")),
                              ui::SCALE_FACTOR_NONE);
+  return loaded_locale;
 }
 
 ElectronMainDelegate::ElectronMainDelegate() = default;
@@ -287,36 +277,6 @@ bool ElectronMainDelegate::BasicStartupComplete(int* exit_code) {
   return false;
 }
 
-void ElectronMainDelegate::PostEarlyInitialization(bool is_running_tests) {
-  std::string custom_locale;
-  ui::ResourceBundle::InitSharedInstanceWithLocale(
-      custom_locale, nullptr, ui::ResourceBundle::LOAD_COMMON_RESOURCES);
-  auto* cmd_line = base::CommandLine::ForCurrentProcess();
-  if (cmd_line->HasSwitch(::switches::kLang)) {
-    const std::string locale = cmd_line->GetSwitchValueASCII(::switches::kLang);
-    const base::FilePath locale_file_path =
-        ui::ResourceBundle::GetSharedInstance().GetLocaleFilePath(locale);
-    if (!locale_file_path.empty()) {
-      custom_locale = locale;
-#if defined(OS_LINUX)
-      /* When built with USE_GLIB, libcc's GetApplicationLocaleInternal() uses
-       * glib's g_get_language_names(), which keys off of getenv("LC_ALL") */
-      g_setenv("LC_ALL", custom_locale.c_str(), TRUE);
-#endif
-    }
-  }
-
-#if defined(OS_MACOSX)
-  if (custom_locale.empty())
-    l10n_util::OverrideLocaleWithCocoaLocale();
-#endif
-
-  LoadResourceBundle(custom_locale);
-
-  ElectronBrowserClient::SetApplicationLocale(
-      l10n_util::GetApplicationLocale(custom_locale));
-}
-
 void ElectronMainDelegate::PreSandboxStartup() {
   auto* command_line = base::CommandLine::ForCurrentProcess();
 
diff --git a/shell/app/electron_main_delegate.h b/shell/app/electron_main_delegate.h
index 2bd4fcd143b2c..d3ea7afd172cb 100644
--- a/shell/app/electron_main_delegate.h
+++ b/shell/app/electron_main_delegate.h
@@ -17,7 +17,7 @@ class TracingSamplerProfiler;
 
 namespace electron {
 
-void LoadResourceBundle(const std::string& locale);
+std::string LoadResourceBundle(const std::string& locale);
 
 class ElectronMainDelegate : public content::ContentMainDelegate {
  public:
@@ -31,7 +31,6 @@ class ElectronMainDelegate : public content::ContentMainDelegate {
   bool BasicStartupComplete(int* exit_code) override;
   void PreSandboxStartup() override;
   void PreCreateMainMessageLoop() override;
-  void PostEarlyInitialization(bool is_running_tests) override;
   content::ContentBrowserClient* CreateContentBrowserClient() override;
   content::ContentGpuClient* CreateContentGpuClient() override;
   content::ContentRendererClient* CreateContentRendererClient() override;
diff --git a/shell/app/node_main.cc b/shell/app/node_main.cc
index 83d9bbec11cbe..69444b5c7ca6a 100644
--- a/shell/app/node_main.cc
+++ b/shell/app/node_main.cc
@@ -289,7 +289,7 @@ int NodeMain(int argc, char* argv[]) {
 
     node::ResetStdio();
 
-    env->set_can_call_into_js(false);
+    node::Stop(env);
     env->stop_sub_worker_contexts();
     env->RunCleanup();
 
diff --git a/shell/app/resources/mac/loginhelper-Info.plist b/shell/app/resources/mac/loginhelper-Info.plist
index 8e106d0a91a54..7a344988c673b 100644
--- a/shell/app/resources/mac/loginhelper-Info.plist
+++ b/shell/app/resources/mac/loginhelper-Info.plist
@@ -12,7 +12,5 @@
 	<string>APPL</string>
 	<key>LSBackgroundOnly</key>
 	<true/>
-	<key>LSRequiresNativeExecution</key>
-	<true/>
 </dict>
 </plist>
diff --git a/shell/browser/api/electron_api_app.cc b/shell/browser/api/electron_api_app.cc
index 25e0a09f7f2de..bf26d87fe2761 100644
--- a/shell/browser/api/electron_api_app.cc
+++ b/shell/browser/api/electron_api_app.cc
@@ -492,10 +492,10 @@ void OnClientCertificateSelected(
       data.c_str(), data.length(), net::X509Certificate::FORMAT_AUTO);
   if (!certs.empty()) {
     scoped_refptr<net::X509Certificate> cert(certs[0].get());
-    for (size_t i = 0; i < identities->size(); ++i) {
-      if (cert->EqualsExcludingChain((*identities)[i]->certificate())) {
+    for (auto& identity : *identities) {
+      if (cert->EqualsExcludingChain(identity->certificate())) {
         net::ClientCertIdentity::SelfOwningAcquirePrivateKey(
-            std::move((*identities)[i]),
+            std::move(identity),
             base::BindRepeating(&GotPrivateKey, delegate, std::move(cert)));
         break;
       }
diff --git a/shell/browser/api/electron_api_browser_view.cc b/shell/browser/api/electron_api_browser_view.cc
index 071dea2564afb..9be2370fe20e8 100644
--- a/shell/browser/api/electron_api_browser_view.cc
+++ b/shell/browser/api/electron_api_browser_view.cc
@@ -4,9 +4,12 @@
 
 #include "shell/browser/api/electron_api_browser_view.h"
 
+#include <vector>
+
 #include "shell/browser/api/electron_api_web_contents.h"
 #include "shell/browser/browser.h"
 #include "shell/browser/native_browser_view.h"
+#include "shell/browser/ui/drag_util.h"
 #include "shell/common/color_util.h"
 #include "shell/common/gin_converters/gfx_converter.h"
 #include "shell/common/gin_helper/dictionary.h"
@@ -63,11 +66,21 @@ BrowserView::BrowserView(gin::Arguments* args,
       gin::Dictionary::CreateEmpty(isolate);
   options.Get(options::kWebPreferences, &web_preferences);
   web_preferences.Set("type", "browserView");
-  gin::Handle<class WebContents> web_contents =
-      WebContents::Create(isolate, web_preferences);
+
+  v8::Local<v8::Value> value;
+
+  // Copy the webContents option to webPreferences. This is only used internally
+  // to implement nativeWindowOpen option.
+  if (options.Get("webContents", &value)) {
+    web_preferences.SetHidden("webContents", value);
+  }
+
+  auto web_contents =
+      WebContents::CreateFromWebPreferences(args->isolate(), web_preferences);
 
   web_contents_.Reset(isolate, web_contents.ToV8());
   api_web_contents_ = web_contents.get();
+  api_web_contents_->AddObserver(this);
   Observe(web_contents->web_contents());
 
   view_.reset(
@@ -80,6 +93,7 @@ BrowserView::~BrowserView() {
   if (api_web_contents_) {  // destroy() is called
     // Destroy WebContents asynchronously unless app is shutting down,
     // because destroy() might be called inside WebContents's event handler.
+    api_web_contents_->RemoveObserver(this);
     api_web_contents_->DestroyWebContents(!Browser::Get()->is_shutting_down());
   }
 }
@@ -89,6 +103,11 @@ void BrowserView::WebContentsDestroyed() {
   web_contents_.Reset();
 }
 
+void BrowserView::OnDraggableRegionsUpdated(
+    const std::vector<mojom::DraggableRegionPtr>& regions) {
+  view_->UpdateDraggableRegions(regions);
+}
+
 // static
 gin_helper::WrappableBase* BrowserView::New(gin_helper::ErrorThrower thrower,
                                             gin::Arguments* args) {
diff --git a/shell/browser/api/electron_api_browser_view.h b/shell/browser/api/electron_api_browser_view.h
index 72ea427456b13..428dda34ca43e 100644
--- a/shell/browser/api/electron_api_browser_view.h
+++ b/shell/browser/api/electron_api_browser_view.h
@@ -7,10 +7,13 @@
 
 #include <memory>
 #include <string>
+#include <vector>
 
 #include "content/public/browser/web_contents_observer.h"
 #include "gin/handle.h"
+#include "shell/browser/extended_web_contents_observer.h"
 #include "shell/browser/native_browser_view.h"
+#include "shell/common/api/api.mojom.h"
 #include "shell/common/gin_helper/error_thrower.h"
 #include "shell/common/gin_helper/trackable_object.h"
 
@@ -31,7 +34,8 @@ namespace api {
 class WebContents;
 
 class BrowserView : public gin_helper::TrackableObject<BrowserView>,
-                    public content::WebContentsObserver {
+                    public content::WebContentsObserver,
+                    public ExtendedWebContentsObserver {
  public:
   static gin_helper::WrappableBase* New(gin_helper::ErrorThrower thrower,
                                         gin::Arguments* args);
@@ -51,6 +55,10 @@ class BrowserView : public gin_helper::TrackableObject<BrowserView>,
   // content::WebContentsObserver:
   void WebContentsDestroyed() override;
 
+  // ExtendedWebContentsObserver:
+  void OnDraggableRegionsUpdated(
+      const std::vector<mojom::DraggableRegionPtr>& regions) override;
+
  private:
   void SetAutoResize(AutoResizeFlags flags);
   void SetBounds(const gfx::Rect& bounds);
diff --git a/shell/browser/api/electron_api_browser_window.cc b/shell/browser/api/electron_api_browser_window.cc
index 38474e0115a18..ffa1db23aa7c1 100644
--- a/shell/browser/api/electron_api_browser_window.cc
+++ b/shell/browser/api/electron_api_browser_window.cc
@@ -14,6 +14,7 @@
 #include "content/public/browser/render_view_host.h"
 #include "shell/browser/api/electron_api_web_contents_view.h"
 #include "shell/browser/browser.h"
+#include "shell/browser/native_browser_view.h"
 #include "shell/browser/unresponsive_suppressor.h"
 #include "shell/browser/web_contents_preferences.h"
 #include "shell/browser/window_list.h"
@@ -152,15 +153,6 @@ void BrowserWindow::DidFirstVisuallyNonEmptyPaint() {
   auto* const view = web_contents()->GetRenderWidgetHostView();
   view->Show();
   view->SetSize(window()->GetContentSize());
-
-  // Emit the ReadyToShow event in next tick in case of pending drawing work.
-  base::ThreadTaskRunnerHandle::Get()->PostTask(
-      FROM_HERE, base::BindOnce(
-                     [](base::WeakPtr<BrowserWindow> self) {
-                       if (self)
-                         self->Emit("ready-to-show");
-                     },
-                     GetWeakPtr()));
 }
 
 void BrowserWindow::BeforeUnloadDialogCancelled() {
@@ -309,18 +301,23 @@ void BrowserWindow::OnWindowIsKeyChanged(bool is_key) {
 
 void BrowserWindow::OnWindowResize() {
 #if defined(OS_MACOSX)
-  if (!draggable_regions_.empty())
+  if (!draggable_regions_.empty()) {
     UpdateDraggableRegions(draggable_regions_);
+  } else {
+    for (NativeBrowserView* view : window_->browser_views()) {
+      view->UpdateDraggableRegions(view->GetDraggableRegions());
+    }
+  }
 #endif
   TopLevelWindow::OnWindowResize();
 }
 
 void BrowserWindow::OnWindowLeaveFullScreen() {
-  TopLevelWindow::OnWindowLeaveFullScreen();
 #if defined(OS_MACOSX)
   if (web_contents()->IsFullscreenForCurrentTab())
     web_contents()->ExitFullscreen(true);
 #endif
+  TopLevelWindow::OnWindowLeaveFullScreen();
 }
 
 void BrowserWindow::Focus() {
@@ -376,6 +373,14 @@ void BrowserWindow::RemoveBrowserView(v8::Local<v8::Value> value) {
 #endif
 }
 
+void BrowserWindow::SetTopBrowserView(v8::Local<v8::Value> value,
+                                      gin_helper::Arguments* args) {
+  TopLevelWindow::SetTopBrowserView(value, args);
+#if defined(OS_MACOSX)
+  UpdateDraggableRegions(draggable_regions_);
+#endif
+}
+
 void BrowserWindow::ResetBrowserViews() {
   TopLevelWindow::ResetBrowserViews();
 #if defined(OS_MACOSX)
@@ -419,19 +424,6 @@ v8::Local<v8::Value> BrowserWindow::GetWebContents(v8::Isolate* isolate) {
   return v8::Local<v8::Value>::New(isolate, web_contents_);
 }
 
-// Convert draggable regions in raw format to SkRegion format.
-std::unique_ptr<SkRegion> BrowserWindow::DraggableRegionsToSkRegion(
-    const std::vector<mojom::DraggableRegionPtr>& regions) {
-  auto sk_region = std::make_unique<SkRegion>();
-  for (const auto& region : regions) {
-    sk_region->op(
-        {region->bounds.x(), region->bounds.y(), region->bounds.right(),
-         region->bounds.bottom()},
-        region->draggable ? SkRegion::kUnion_Op : SkRegion::kDifference_Op);
-  }
-  return sk_region;
-}
-
 void BrowserWindow::ScheduleUnresponsiveEvent(int ms) {
   if (!window_unresponsive_closure_.IsCancelled())
     return;
diff --git a/shell/browser/api/electron_api_browser_window.h b/shell/browser/api/electron_api_browser_window.h
index b24c99a3b6043..dcd51f8d28ede 100644
--- a/shell/browser/api/electron_api_browser_window.h
+++ b/shell/browser/api/electron_api_browser_window.h
@@ -12,6 +12,7 @@
 #include "base/cancelable_callback.h"
 #include "shell/browser/api/electron_api_top_level_window.h"
 #include "shell/browser/api/electron_api_web_contents.h"
+#include "shell/browser/ui/drag_util.h"
 #include "shell/common/gin_helper/error_thrower.h"
 
 namespace electron {
@@ -62,6 +63,9 @@ class BrowserWindow : public TopLevelWindow,
   void OnActivateContents() override;
   void OnPageTitleUpdated(const base::string16& title,
                           bool explicit_set) override;
+#if defined(OS_MACOSX)
+  void OnDevToolsResized() override;
+#endif
 
   // NativeWindowObserver:
   void RequestPreferredWidth(int* width) override;
@@ -80,6 +84,8 @@ class BrowserWindow : public TopLevelWindow,
   void SetBrowserView(v8::Local<v8::Value> value) override;
   void AddBrowserView(v8::Local<v8::Value> value) override;
   void RemoveBrowserView(v8::Local<v8::Value> value) override;
+  void SetTopBrowserView(v8::Local<v8::Value> value,
+                         gin_helper::Arguments* args) override;
   void ResetBrowserViews() override;
   void SetVibrancy(v8::Isolate* isolate, v8::Local<v8::Value> value) override;
   void OnWindowShow() override;
@@ -102,10 +108,6 @@ class BrowserWindow : public TopLevelWindow,
   void UpdateDraggableRegions(
       const std::vector<mojom::DraggableRegionPtr>& regions);
 
-  // Convert draggable regions in raw format to SkRegion format.
-  std::unique_ptr<SkRegion> DraggableRegionsToSkRegion(
-      const std::vector<mojom::DraggableRegionPtr>& regions);
-
   // Schedule a notification unresponsive event.
   void ScheduleUnresponsiveEvent(int ms);
 
diff --git a/shell/browser/api/electron_api_browser_window_mac.mm b/shell/browser/api/electron_api_browser_window_mac.mm
index f1c245dad8ed6..76abcfcc7586d 100644
--- a/shell/browser/api/electron_api_browser_window_mac.mm
+++ b/shell/browser/api/electron_api_browser_window_mac.mm
@@ -12,51 +12,13 @@
 #include "base/mac/scoped_nsobject.h"
 #include "shell/browser/native_browser_view.h"
 #include "shell/browser/native_window_mac.h"
+#include "shell/browser/ui/cocoa/electron_inspectable_web_contents_view.h"
 #include "shell/browser/ui/inspectable_web_contents_view.h"
 
-@interface NSView (WebContentsView)
-- (void)setMouseDownCanMoveWindow:(BOOL)can_move;
-@end
-
-@interface ControlRegionView : NSView
-@end
-
-@implementation ControlRegionView
-
-- (BOOL)mouseDownCanMoveWindow {
-  return NO;
-}
-
-- (NSView*)hitTest:(NSPoint)aPoint {
-  return nil;
-}
-
-@end
-
 namespace electron {
 
 namespace api {
 
-namespace {
-
-// Return a vector of non-draggable regions that fill a window of size
-// |width| by |height|, but leave gaps where the window should be draggable.
-std::vector<gfx::Rect> CalculateNonDraggableRegions(
-    std::unique_ptr<SkRegion> draggable,
-    int width,
-    int height) {
-  std::vector<gfx::Rect> result;
-  SkRegion non_draggable;
-  non_draggable.op({0, 0, width, height}, SkRegion::kUnion_Op);
-  non_draggable.op(*draggable, SkRegion::kDifference_Op);
-  for (SkRegion::Iterator it(non_draggable); !it.done(); it.next()) {
-    result.push_back(gfx::SkIRectToRect(it.rect()));
-  }
-  return result;
-}
-
-}  // namespace
-
 void BrowserWindow::OverrideNSWindowContentView(InspectableWebContents* iwc) {
   // Make NativeWindow use a NSView as content view.
   static_cast<NativeWindowMac*>(window())->OverrideNSWindowContentView();
@@ -74,6 +36,10 @@ - (NSView*)hitTest:(NSPoint)aPoint {
   [contentView viewDidMoveToWindow];
 }
 
+void BrowserWindow::OnDevToolsResized() {
+  UpdateDraggableRegions(draggable_regions_);
+}
+
 void BrowserWindow::UpdateDraggableRegions(
     const std::vector<mojom::DraggableRegionPtr>& regions) {
   if (window_->has_frame())
@@ -102,23 +68,20 @@ - (NSView*)hitTest:(NSPoint)aPoint {
     if ([subview isKindOfClass:[ControlRegionView class]])
       [subview removeFromSuperview];
 
-  // Draggable regions is implemented by having the whole web view draggable
-  // (mouseDownCanMoveWindow) and overlaying regions that are not draggable.
-  if (&draggable_regions_ != &regions) {
-    draggable_regions_.clear();
-    for (const auto& r : regions)
-      draggable_regions_.push_back(r.Clone());
-  }
+  // Draggable regions are implemented by having the whole web view draggable
+  // and overlaying regions that are not draggable.
+  if (&draggable_regions_ != &regions)
+    draggable_regions_ = mojo::Clone(regions);
+
   std::vector<gfx::Rect> drag_exclude_rects;
   if (regions.empty()) {
-    drag_exclude_rects.push_back(gfx::Rect(0, 0, webViewWidth, webViewHeight));
+    drag_exclude_rects.emplace_back(0, 0, webViewWidth, webViewHeight);
   } else {
     drag_exclude_rects = CalculateNonDraggableRegions(
         DraggableRegionsToSkRegion(regions), webViewWidth, webViewHeight);
   }
 
-  auto browser_views = window_->browser_views();
-  for (NativeBrowserView* view : browser_views) {
+  for (NativeBrowserView* view : window_->browser_views()) {
     view->UpdateDraggableRegions(drag_exclude_rects);
   }
 
diff --git a/shell/browser/api/electron_api_browser_window_views.cc b/shell/browser/api/electron_api_browser_window_views.cc
index 8da8a18fa3028..1b50f7f0fe46b 100644
--- a/shell/browser/api/electron_api_browser_window_views.cc
+++ b/shell/browser/api/electron_api_browser_window_views.cc
@@ -15,7 +15,7 @@ void BrowserWindow::UpdateDraggableRegions(
   if (window_->has_frame())
     return;
   static_cast<NativeWindowViews*>(window_.get())
-      ->UpdateDraggableRegions(DraggableRegionsToSkRegion(regions));
+      ->UpdateDraggableRegions(regions);
 }
 
 }  // namespace api
diff --git a/shell/browser/api/electron_api_crash_reporter.cc b/shell/browser/api/electron_api_crash_reporter.cc
index 460e4256f5e35..e22d9908747e7 100644
--- a/shell/browser/api/electron_api_crash_reporter.cc
+++ b/shell/browser/api/electron_api_crash_reporter.cc
@@ -86,18 +86,22 @@ const std::map<std::string, std::string>& GetGlobalCrashKeys() {
   return GetGlobalCrashKeysMutable();
 }
 
-base::FilePath GetClientIdPath() {
-  base::FilePath path;
-  base::PathService::Get(electron::DIR_CRASH_DUMPS, &path);
-  return path.Append("client_id");
+bool GetClientIdPath(base::FilePath* path) {
+  if (base::PathService::Get(electron::DIR_CRASH_DUMPS, path)) {
+    *path = path->Append("client_id");
+    return true;
+  }
+  return false;
 }
 
 std::string ReadClientId() {
   base::ThreadRestrictions::ScopedAllowIO allow_io;
   std::string client_id;
   // "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".length == 36
-  if (!base::ReadFileToStringWithMaxSize(GetClientIdPath(), &client_id, 36) ||
-      client_id.size() != 36)
+  base::FilePath client_id_path;
+  if (GetClientIdPath(&client_id_path) &&
+      (!base::ReadFileToStringWithMaxSize(client_id_path, &client_id, 36) ||
+       client_id.size() != 36))
     return std::string();
   return client_id;
 }
@@ -105,7 +109,9 @@ std::string ReadClientId() {
 void WriteClientId(const std::string& client_id) {
   DCHECK_EQ(client_id.size(), 36u);
   base::ThreadRestrictions::ScopedAllowIO allow_io;
-  base::WriteFile(GetClientIdPath(), client_id);
+  base::FilePath client_id_path;
+  if (GetClientIdPath(&client_id_path))
+    base::WriteFile(client_id_path, client_id);
 }
 
 std::string GetClientId() {
diff --git a/shell/browser/api/electron_api_debugger.cc b/shell/browser/api/electron_api_debugger.cc
index 2968003c48ec0..2ac7fb13a9ef6 100644
--- a/shell/browser/api/electron_api_debugger.cc
+++ b/shell/browser/api/electron_api_debugger.cc
@@ -53,8 +53,7 @@ void Debugger::DispatchProtocolMessage(DevToolsAgentHost* agent_host,
                                        base::JSON_REPLACE_INVALID_CHARACTERS);
   if (!parsed_message || !parsed_message->is_dict())
     return;
-  base::DictionaryValue* dict =
-      static_cast<base::DictionaryValue*>(parsed_message.get());
+  auto* dict = static_cast<base::DictionaryValue*>(parsed_message.get());
   int id;
   if (!dict->GetInteger("id", &id)) {
     std::string method;
@@ -185,6 +184,7 @@ v8::Local<v8::Promise> Debugger::SendCommand(gin::Arguments* args) {
 void Debugger::ClearPendingRequests() {
   for (auto& it : pending_requests_)
     it.second.RejectWithErrorMessage("target closed while handling command");
+  pending_requests_.clear();
 }
 
 // static
diff --git a/shell/browser/api/electron_api_desktop_capturer.cc b/shell/browser/api/electron_api_desktop_capturer.cc
index bacc4df0b288b..73d8b1b6177cb 100644
--- a/shell/browser/api/electron_api_desktop_capturer.cc
+++ b/shell/browser/api/electron_api_desktop_capturer.cc
@@ -161,6 +161,9 @@ void DesktopCapturer::UpdateSourcesList(DesktopMediaList* list) {
         v8::Locker locker(isolate);
         v8::HandleScope scope(isolate);
         gin_helper::CallMethod(this, "_onerror", "Failed to get sources.");
+
+        Unpin();
+
         return;
       }
 
@@ -194,12 +197,19 @@ void DesktopCapturer::UpdateSourcesList(DesktopMediaList* list) {
     v8::Locker locker(isolate);
     v8::HandleScope scope(isolate);
     gin_helper::CallMethod(this, "_onfinished", captured_sources_);
+
+    Unpin();
   }
 }
 
 // static
 gin::Handle<DesktopCapturer> DesktopCapturer::Create(v8::Isolate* isolate) {
-  return gin::CreateHandle(isolate, new DesktopCapturer(isolate));
+  auto handle = gin::CreateHandle(isolate, new DesktopCapturer(isolate));
+
+  // Keep reference alive until capturing has finished.
+  handle->Pin(isolate);
+
+  return handle;
 }
 
 gin::ObjectTemplateBuilder DesktopCapturer::GetObjectTemplateBuilder(
diff --git a/shell/browser/api/electron_api_desktop_capturer.h b/shell/browser/api/electron_api_desktop_capturer.h
index 3ef7c0bd1f164..9664836a0f3c3 100644
--- a/shell/browser/api/electron_api_desktop_capturer.h
+++ b/shell/browser/api/electron_api_desktop_capturer.h
@@ -13,12 +13,14 @@
 #include "chrome/browser/media/webrtc/native_desktop_media_list.h"
 #include "gin/handle.h"
 #include "gin/wrappable.h"
+#include "shell/common/gin_helper/pinnable.h"
 
 namespace electron {
 
 namespace api {
 
 class DesktopCapturer : public gin::Wrappable<DesktopCapturer>,
+                        public gin_helper::Pinnable<DesktopCapturer>,
                         public DesktopMediaListObserver {
  public:
   struct Source {
diff --git a/shell/browser/api/electron_api_download_item.cc b/shell/browser/api/electron_api_download_item.cc
index a6a78584df134..420fe79ac39ac 100644
--- a/shell/browser/api/electron_api_download_item.cc
+++ b/shell/browser/api/electron_api_download_item.cc
@@ -77,7 +77,7 @@ gin::WrapperInfo DownloadItem::kWrapperInfo = {gin::kEmbedderNativeGin};
 DownloadItem* DownloadItem::FromDownloadItem(
     download::DownloadItem* download_item) {
   // ^- say that 7 times fast in a row
-  UserDataLink* data = static_cast<UserDataLink*>(
+  auto* data = static_cast<UserDataLink*>(
       download_item->GetUserData(kElectronApiDownloadItemKey));
   return data ? data->download_item.get() : nullptr;
 }
diff --git a/shell/browser/api/electron_api_global_shortcut.cc b/shell/browser/api/electron_api_global_shortcut.cc
index 804b53729d93a..d8a71b6bbc522 100644
--- a/shell/browser/api/electron_api_global_shortcut.cc
+++ b/shell/browser/api/electron_api_global_shortcut.cc
@@ -12,6 +12,8 @@
 #include "gin/dictionary.h"
 #include "gin/object_template_builder.h"
 #include "shell/browser/api/electron_api_system_preferences.h"
+#include "shell/browser/browser.h"
+#include "shell/browser/javascript_environment.h"
 #include "shell/common/gin_converters/accelerator_converter.h"
 #include "shell/common/gin_converters/callback_converter.h"
 #include "shell/common/node_includes.h"
@@ -73,6 +75,11 @@ void GlobalShortcut::OnKeyPressed(const ui::Accelerator& accelerator) {
 bool GlobalShortcut::RegisterAll(
     const std::vector<ui::Accelerator>& accelerators,
     const base::Closure& callback) {
+  if (!electron::Browser::Get()->is_ready()) {
+    gin_helper::ErrorThrower(JavascriptEnvironment::GetIsolate())
+        .ThrowError("globalShortcut cannot be used before the app is ready");
+    return false;
+  }
   std::vector<ui::Accelerator> registered;
 
   for (auto& accelerator : accelerators) {
@@ -89,6 +96,11 @@ bool GlobalShortcut::RegisterAll(
 
 bool GlobalShortcut::Register(const ui::Accelerator& accelerator,
                               const base::Closure& callback) {
+  if (!electron::Browser::Get()->is_ready()) {
+    gin_helper::ErrorThrower(JavascriptEnvironment::GetIsolate())
+        .ThrowError("globalShortcut cannot be used before the app is ready");
+    return false;
+  }
 #if defined(OS_MACOSX)
   if (RegisteringMediaKeyForUntrustedClient(accelerator))
     return false;
@@ -104,6 +116,11 @@ bool GlobalShortcut::Register(const ui::Accelerator& accelerator,
 }
 
 void GlobalShortcut::Unregister(const ui::Accelerator& accelerator) {
+  if (!electron::Browser::Get()->is_ready()) {
+    gin_helper::ErrorThrower(JavascriptEnvironment::GetIsolate())
+        .ThrowError("globalShortcut cannot be used before the app is ready");
+    return;
+  }
   if (accelerator_callback_map_.erase(accelerator) == 0)
     return;
 
@@ -123,6 +140,11 @@ bool GlobalShortcut::IsRegistered(const ui::Accelerator& accelerator) {
 }
 
 void GlobalShortcut::UnregisterAll() {
+  if (!electron::Browser::Get()->is_ready()) {
+    gin_helper::ErrorThrower(JavascriptEnvironment::GetIsolate())
+        .ThrowError("globalShortcut cannot be used before the app is ready");
+    return;
+  }
   accelerator_callback_map_.clear();
   GlobalShortcutListener::GetInstance()->UnregisterAccelerators(this);
 }
diff --git a/shell/browser/api/electron_api_power_monitor.h b/shell/browser/api/electron_api_power_monitor.h
index e31bafce8a3a4..cc1dfab8fe555 100644
--- a/shell/browser/api/electron_api_power_monitor.h
+++ b/shell/browser/api/electron_api_power_monitor.h
@@ -78,8 +78,6 @@ class PowerMonitor : public gin::Wrappable<PowerMonitor>,
   PowerObserverLinux power_observer_linux_{this};
 #endif
 
-  v8::Global<v8::Value> pinned_;
-
   DISALLOW_COPY_AND_ASSIGN(PowerMonitor);
 };
 
diff --git a/shell/browser/api/electron_api_power_monitor_win.cc b/shell/browser/api/electron_api_power_monitor_win.cc
index c56a4b39c7510..bf1468cd97038 100644
--- a/shell/browser/api/electron_api_power_monitor_win.cc
+++ b/shell/browser/api/electron_api_power_monitor_win.cc
@@ -9,6 +9,7 @@
 
 #include "base/win/windows_types.h"
 #include "base/win/wrapped_window_proc.h"
+#include "content/public/browser/browser_task_traits.h"
 #include "ui/base/win/shell.h"
 #include "ui/gfx/win/hwnd_util.h"
 
@@ -58,7 +59,7 @@ LRESULT CALLBACK PowerMonitor::WndProcStatic(HWND hwnd,
                                              UINT message,
                                              WPARAM wparam,
                                              LPARAM lparam) {
-  PowerMonitor* msg_wnd =
+  auto* msg_wnd =
       reinterpret_cast<PowerMonitor*>(GetWindowLongPtr(hwnd, GWLP_USERDATA));
   if (msg_wnd)
     return msg_wnd->WndProc(hwnd, message, wparam, lparam);
@@ -81,16 +82,29 @@ LRESULT CALLBACK PowerMonitor::WndProc(HWND hwnd,
     }
     if (should_treat_as_current_session) {
       if (wparam == WTS_SESSION_LOCK) {
-        Emit("lock-screen");
+        // Unretained is OK because this object is eternally pinned.
+        content::GetUIThreadTaskRunner({})->PostTask(
+            FROM_HERE,
+            base::BindOnce([](PowerMonitor* pm) { pm->Emit("lock-screen"); },
+                           base::Unretained(this)));
       } else if (wparam == WTS_SESSION_UNLOCK) {
-        Emit("unlock-screen");
+        content::GetUIThreadTaskRunner({})->PostTask(
+            FROM_HERE,
+            base::BindOnce([](PowerMonitor* pm) { pm->Emit("unlock-screen"); },
+                           base::Unretained(this)));
       }
     }
   } else if (message == WM_POWERBROADCAST) {
     if (wparam == PBT_APMRESUMEAUTOMATIC) {
-      Emit("resume");
+      content::GetUIThreadTaskRunner({})->PostTask(
+          FROM_HERE,
+          base::BindOnce([](PowerMonitor* pm) { pm->Emit("resume"); },
+                         base::Unretained(this)));
     } else if (wparam == PBT_APMSUSPEND) {
-      Emit("suspend");
+      content::GetUIThreadTaskRunner({})->PostTask(
+          FROM_HERE,
+          base::BindOnce([](PowerMonitor* pm) { pm->Emit("suspend"); },
+                         base::Unretained(this)));
     }
   }
   return ::DefWindowProc(hwnd, message, wparam, lparam);
diff --git a/shell/browser/api/electron_api_session.cc b/shell/browser/api/electron_api_session.cc
index c9f069df246a8..5c8843f9f905e 100644
--- a/shell/browser/api/electron_api_session.cc
+++ b/shell/browser/api/electron_api_session.cc
@@ -867,9 +867,11 @@ v8::Local<v8::Promise> Session::ListWordsInSpellCheckerDictionary() {
   SpellcheckService* spellcheck =
       SpellcheckServiceFactory::GetForContext(browser_context_);
 
-  if (!spellcheck)
+  if (!spellcheck) {
     promise.RejectWithErrorMessage(
         "Spellcheck in unexpected state: failed to load custom dictionary.");
+    return handle;
+  }
 
   if (spellcheck->GetCustomDictionary()->IsLoaded()) {
     promise.Resolve(spellcheck->GetCustomDictionary()->GetWords());
@@ -928,7 +930,7 @@ bool Session::RemoveWordFromSpellCheckerDictionary(const std::string& word) {
 
 // static
 Session* Session::FromBrowserContext(content::BrowserContext* context) {
-  UserDataLink* data =
+  auto* data =
       static_cast<UserDataLink*>(context->GetUserData(kElectronApiSessionKey));
   return data ? data->session : nullptr;
 }
@@ -950,8 +952,7 @@ gin::Handle<Session> Session::CreateFrom(
   ElectronBrowserMainParts::Get()->RegisterDestructionCallback(
       base::BindOnce([](Session* session) { delete session; }, handle.get()));
 
-  App::Get()->EmitCustomEvent("session-created",
-                              handle.ToV8().As<v8::Object>());
+  App::Get()->Emit("-session-created", handle.ToV8().As<v8::Object>());
 
   return handle;
 }
diff --git a/shell/browser/api/electron_api_system_preferences_win.cc b/shell/browser/api/electron_api_system_preferences_win.cc
index b106bd43c4a22..555b4d60c2b74 100644
--- a/shell/browser/api/electron_api_system_preferences_win.cc
+++ b/shell/browser/api/electron_api_system_preferences_win.cc
@@ -218,7 +218,7 @@ LRESULT CALLBACK SystemPreferences::WndProcStatic(HWND hwnd,
                                                   UINT message,
                                                   WPARAM wparam,
                                                   LPARAM lparam) {
-  SystemPreferences* msg_wnd = reinterpret_cast<SystemPreferences*>(
+  auto* msg_wnd = reinterpret_cast<SystemPreferences*>(
       GetWindowLongPtr(hwnd, GWLP_USERDATA));
   if (msg_wnd)
     return msg_wnd->WndProc(hwnd, message, wparam, lparam);
diff --git a/shell/browser/api/electron_api_top_level_window.cc b/shell/browser/api/electron_api_top_level_window.cc
index ffc430d1e9965..d6258678e05e3 100644
--- a/shell/browser/api/electron_api_top_level_window.cc
+++ b/shell/browser/api/electron_api_top_level_window.cc
@@ -751,8 +751,18 @@ void TopLevelWindow::AddBrowserView(v8::Local<v8::Value> value) {
       gin::ConvertFromV8(isolate(), value, &browser_view)) {
     auto get_that_view = browser_views_.find(browser_view->weak_map_id());
     if (get_that_view == browser_views_.end()) {
-      window_->AddBrowserView(browser_view->view());
-      browser_view->web_contents()->SetOwnerWindow(window_.get());
+      if (browser_view->web_contents()) {
+        // If we're reparenting a BrowserView, ensure that it's detached from
+        // its previous owner window.
+        auto* owner_window = browser_view->web_contents()->owner_window();
+        if (owner_window && owner_window != window_.get()) {
+          owner_window->RemoveBrowserView(browser_view->view());
+          browser_view->web_contents()->SetOwnerWindow(nullptr);
+        }
+
+        window_->AddBrowserView(browser_view->view());
+        browser_view->web_contents()->SetOwnerWindow(window_.get());
+      }
       browser_views_[browser_view->weak_map_id()].Reset(isolate(), value);
     }
   }
@@ -764,15 +774,35 @@ void TopLevelWindow::RemoveBrowserView(v8::Local<v8::Value> value) {
       gin::ConvertFromV8(isolate(), value, &browser_view)) {
     auto get_that_view = browser_views_.find(browser_view->weak_map_id());
     if (get_that_view != browser_views_.end()) {
-      window_->RemoveBrowserView(browser_view->view());
-      browser_view->web_contents()->SetOwnerWindow(nullptr);
-
+      if (browser_view->web_contents()) {
+        window_->RemoveBrowserView(browser_view->view());
+        browser_view->web_contents()->SetOwnerWindow(nullptr);
+      }
       (*get_that_view).second.Reset(isolate(), value);
       browser_views_.erase(get_that_view);
     }
   }
 }
 
+void TopLevelWindow::SetTopBrowserView(v8::Local<v8::Value> value,
+                                       gin_helper::Arguments* args) {
+  gin::Handle<BrowserView> browser_view;
+  if (value->IsObject() &&
+      gin::ConvertFromV8(isolate(), value, &browser_view)) {
+    if (!browser_view->web_contents())
+      return;
+    auto* owner_window = browser_view->web_contents()->owner_window();
+    auto get_that_view = browser_views_.find(browser_view->ID());
+    if (get_that_view == browser_views_.end() ||
+        (owner_window && owner_window != window_.get())) {
+      args->ThrowError("Given BrowserView is not attached to the window");
+      return;
+    }
+
+    window_->SetTopBrowserView(browser_view->view());
+  }
+}
+
 std::string TopLevelWindow::GetMediaSourceId() const {
   return window_->GetDesktopMediaID().ToString();
 }
@@ -948,7 +978,7 @@ std::vector<v8::Local<v8::Object>> TopLevelWindow::GetChildWindows() const {
 
 v8::Local<v8::Value> TopLevelWindow::GetBrowserView(
     gin_helper::Arguments* args) const {
-  if (browser_views_.size() == 0) {
+  if (browser_views_.empty()) {
     return v8::Null(isolate());
   } else if (browser_views_.size() == 1) {
     auto first_view = browser_views_.begin();
@@ -1064,8 +1094,15 @@ void TopLevelWindow::ResetBrowserViews() {
                            v8::Local<v8::Value>::New(isolate(), item.second),
                            &browser_view) &&
         !browser_view.IsEmpty()) {
-      window_->RemoveBrowserView(browser_view->view());
-      browser_view->web_contents()->SetOwnerWindow(nullptr);
+      // There's a chance that the BrowserView may have been reparented - only
+      // reset if the owner window is *this* window.
+      if (browser_view->web_contents()) {
+        auto* owner_window = browser_view->web_contents()->owner_window();
+        if (owner_window && owner_window == window_.get()) {
+          browser_view->web_contents()->SetOwnerWindow(nullptr);
+          owner_window->RemoveBrowserView(browser_view->view());
+        }
+      }
     }
 
     item.second.Reset();
@@ -1185,6 +1222,7 @@ void TopLevelWindow::BuildPrototype(v8::Isolate* isolate,
       .SetMethod("removeMenu", &TopLevelWindow::RemoveMenu)
       .SetMethod("setParentWindow", &TopLevelWindow::SetParentWindow)
       .SetMethod("setBrowserView", &TopLevelWindow::SetBrowserView)
+      .SetMethod("setTopBrowserView", &TopLevelWindow::SetTopBrowserView)
       .SetMethod("addBrowserView", &TopLevelWindow::AddBrowserView)
       .SetMethod("removeBrowserView", &TopLevelWindow::RemoveBrowserView)
       .SetMethod("getMediaSourceId", &TopLevelWindow::GetMediaSourceId)
diff --git a/shell/browser/api/electron_api_top_level_window.h b/shell/browser/api/electron_api_top_level_window.h
index d640c28f5163e..89b33c3b599ff 100644
--- a/shell/browser/api/electron_api_top_level_window.h
+++ b/shell/browser/api/electron_api_top_level_window.h
@@ -174,6 +174,8 @@ class TopLevelWindow : public gin_helper::TrackableObject<TopLevelWindow>,
   virtual void SetBrowserView(v8::Local<v8::Value> value);
   virtual void AddBrowserView(v8::Local<v8::Value> value);
   virtual void RemoveBrowserView(v8::Local<v8::Value> value);
+  virtual void SetTopBrowserView(v8::Local<v8::Value> value,
+                                 gin_helper::Arguments* args);
   virtual std::vector<v8::Local<v8::Value>> GetBrowserViews() const;
   virtual void ResetBrowserViews();
   std::string GetMediaSourceId() const;
diff --git a/shell/browser/api/electron_api_web_contents.cc b/shell/browser/api/electron_api_web_contents.cc
index ff92b6ed15cd8..70e90d2d697d6 100644
--- a/shell/browser/api/electron_api_web_contents.cc
+++ b/shell/browser/api/electron_api_web_contents.cc
@@ -130,6 +130,7 @@
 
 #if BUILDFLAG(ENABLE_ELECTRON_EXTENSIONS)
 #include "extensions/browser/script_executor.h"
+#include "extensions/browser/view_type_utils.h"
 #include "shell/browser/extensions/electron_extension_web_contents_observer.h"
 #endif
 
@@ -377,24 +378,96 @@ bool IsDeviceNameValid(const base::string16& device_name) {
 }
 
 base::string16 GetDefaultPrinterAsync() {
-  base::ScopedBlockingCall scoped_blocking_call(FROM_HERE,
-                                                base::BlockingType::MAY_BLOCK);
+#if defined(OS_WIN)
+  // Blocking is needed here because Windows printer drivers are oftentimes
+  // not thread-safe and have to be accessed on the UI thread.
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
+#endif
 
-  scoped_refptr<printing::PrintBackend> backend =
+  scoped_refptr<printing::PrintBackend> print_backend =
       printing::PrintBackend::CreateInstance(
           nullptr, g_browser_process->GetApplicationLocale());
-  std::string printer_name = backend->GetDefaultPrinterName();
+  std::string printer_name = print_backend->GetDefaultPrinterName();
+
+  // Some devices won't have a default printer, so we should
+  // also check for existing printers and pick the first
+  // one should it exist.
+  if (printer_name.empty()) {
+    printing::PrinterList printers;
+    print_backend->EnumeratePrinters(&printers);
+    if (!printers.empty())
+      printer_name = printers.front().printer_name;
+  }
   return base::UTF8ToUTF16(printer_name);
 }
+
+// Copied from
+// chrome/browser/ui/webui/print_preview/local_printer_handler_default.cc:L36-L54
+scoped_refptr<base::TaskRunner> CreatePrinterHandlerTaskRunner() {
+  // USER_VISIBLE because the result is displayed in the print preview dialog.
+#if !defined(OS_WIN)
+  static constexpr base::TaskTraits kTraits = {
+      base::MayBlock(), base::TaskPriority::USER_VISIBLE};
+#endif
+
+#if defined(USE_CUPS)
+  // CUPS is thread safe.
+  return base::ThreadPool::CreateTaskRunner(kTraits);
+#elif defined(OS_WIN)
+  // Windows drivers are likely not thread-safe and need to be accessed on the
+  // UI thread.
+  return content::GetUIThreadTaskRunner(
+      {base::MayBlock(), base::TaskPriority::USER_VISIBLE});
+#else
+  // Be conservative on unsupported platforms.
+  return base::ThreadPool::CreateSingleThreadTaskRunner(kTraits);
+#endif
+}
 #endif
 
 }  // namespace
 
+#if BUILDFLAG(ENABLE_ELECTRON_EXTENSIONS)
+
+WebContents::Type GetTypeFromViewType(extensions::ViewType view_type) {
+  switch (view_type) {
+    case extensions::VIEW_TYPE_EXTENSION_BACKGROUND_PAGE:
+      return WebContents::Type::BACKGROUND_PAGE;
+
+    case extensions::VIEW_TYPE_APP_WINDOW:
+    case extensions::VIEW_TYPE_COMPONENT:
+    case extensions::VIEW_TYPE_EXTENSION_DIALOG:
+    case extensions::VIEW_TYPE_EXTENSION_POPUP:
+    case extensions::VIEW_TYPE_BACKGROUND_CONTENTS:
+    case extensions::VIEW_TYPE_EXTENSION_GUEST:
+    case extensions::VIEW_TYPE_TAB_CONTENTS:
+    case extensions::VIEW_TYPE_INVALID:
+      return WebContents::Type::REMOTE;
+  }
+}
+
+#endif
+
 WebContents::WebContents(v8::Isolate* isolate,
                          content::WebContents* web_contents)
     : content::WebContentsObserver(web_contents),
       type_(Type::REMOTE),
+#if BUILDFLAG(ENABLE_PRINTING)
+      print_task_runner_(CreatePrinterHandlerTaskRunner()),
+#endif
       weak_factory_(this) {
+#if BUILDFLAG(ENABLE_ELECTRON_EXTENSIONS)
+  // WebContents created by extension host will have valid ViewType set.
+  extensions::ViewType view_type = extensions::GetViewType(web_contents);
+  if (view_type != extensions::VIEW_TYPE_INVALID) {
+    InitWithExtensionView(isolate, web_contents, view_type);
+  }
+
+  extensions::ElectronExtensionWebContentsObserver::CreateForWebContents(
+      web_contents);
+  script_executor_.reset(new extensions::ScriptExecutor(web_contents));
+#endif
+
   auto session = Session::CreateFrom(isolate, GetBrowserContext());
   session_.Reset(isolate, session.ToV8());
 
@@ -404,11 +477,7 @@ WebContents::WebContents(v8::Isolate* isolate,
   Init(isolate);
   AttachAsUserData(web_contents);
   InitZoomController(web_contents, gin::Dictionary::CreateEmpty(isolate));
-#if BUILDFLAG(ENABLE_ELECTRON_EXTENSIONS)
-  extensions::ElectronExtensionWebContentsObserver::CreateForWebContents(
-      web_contents);
-  script_executor_.reset(new extensions::ScriptExecutor(web_contents));
-#endif
+
   registry_.AddInterface(base::BindRepeating(&WebContents::BindElectronBrowser,
                                              base::Unretained(this)));
   receivers_.set_disconnect_handler(base::BindRepeating(
@@ -420,6 +489,9 @@ WebContents::WebContents(v8::Isolate* isolate,
                          Type type)
     : content::WebContentsObserver(web_contents.get()),
       type_(type),
+#if BUILDFLAG(ENABLE_PRINTING)
+      print_task_runner_(CreatePrinterHandlerTaskRunner()),
+#endif
       weak_factory_(this) {
   DCHECK(type != Type::REMOTE)
       << "Can't take ownership of a remote WebContents";
@@ -431,7 +503,11 @@ WebContents::WebContents(v8::Isolate* isolate,
 
 WebContents::WebContents(v8::Isolate* isolate,
                          const gin_helper::Dictionary& options)
-    : weak_factory_(this) {
+    :
+#if BUILDFLAG(ENABLE_PRINTING)
+      print_task_runner_(CreatePrinterHandlerTaskRunner()),
+#endif
+      weak_factory_(this) {
   // Read options.
   options.Get("backgroundThrottling", &background_throttling_);
 
@@ -453,8 +529,8 @@ WebContents::WebContents(v8::Isolate* isolate,
   // BrowserViews are not attached to a window initially so they should start
   // off as hidden. This is also important for compositor recycling. See:
   // https://github.com/electron/electron/pull/21372
-  bool initially_shown = type_ != Type::BROWSER_VIEW;
-  options.Get(options::kShow, &initially_shown);
+  initially_shown_ = type_ != Type::BROWSER_VIEW;
+  options.Get(options::kShow, &initially_shown_);
 
   // Obtain the session.
   std::string partition;
@@ -510,7 +586,7 @@ WebContents::WebContents(v8::Isolate* isolate,
 #endif
   } else {
     content::WebContents::CreateParams params(session->browser_context());
-    params.initially_hidden = !initially_shown;
+    params.initially_hidden = !initially_shown_;
     web_contents = content::WebContents::Create(params);
   }
 
@@ -613,12 +689,38 @@ void WebContents::InitWithSessionAndOptions(
   AttachAsUserData(web_contents());
 }
 
+#if BUILDFLAG(ENABLE_ELECTRON_EXTENSIONS)
+void WebContents::InitWithExtensionView(v8::Isolate* isolate,
+                                        content::WebContents* web_contents,
+                                        extensions::ViewType view_type) {
+  // Must reassign type prior to calling `Init`.
+  type_ = GetTypeFromViewType(view_type);
+  if (GetType() == Type::REMOTE)
+    return;
+
+  // Allow toggling DevTools for background pages
+  Observe(web_contents);
+  InitWithWebContents(web_contents, GetBrowserContext(), IsGuest());
+  managed_web_contents()->GetView()->SetDelegate(this);
+  SecurityStateTabHelper::CreateForWebContents(web_contents);
+}
+#endif
+
 WebContents::~WebContents() {
   // The destroy() is called.
   if (managed_web_contents()) {
+#if BUILDFLAG(ENABLE_ELECTRON_EXTENSIONS)
+    if (type_ == Type::BACKGROUND_PAGE) {
+      // Background pages are owned by extensions::ExtensionHost
+      managed_web_contents()->ReleaseWebContents();
+    }
+#endif
+
     managed_web_contents()->GetView()->SetDelegate(nullptr);
 
-    RenderViewDeleted(web_contents()->GetRenderViewHost());
+    if (web_contents()) {
+      RenderViewDeleted(web_contents()->GetRenderViewHost());
+    }
 
     if (type_ == Type::BROWSER_WINDOW && owner_window()) {
       // For BrowserWindow we should close the window and clean up everything
@@ -634,7 +736,8 @@ WebContents::~WebContents() {
     } else {
       // Destroy WebContents asynchronously unless app is shutting down,
       // because destroy() might be called inside WebContents's event handler.
-      DestroyWebContents(!IsGuest() /* async */);
+      bool is_browser_view = type_ == Type::BROWSER_VIEW;
+      DestroyWebContents(!(IsGuest() || is_browser_view) /* async */);
       // The WebContentsDestroyed will not be called automatically because we
       // destroy the webContents in the next tick. So we have to manually
       // call it here to make sure "destroyed" event is emitted.
@@ -729,8 +832,7 @@ void WebContents::AddNewContents(
            initial_rect.x(), initial_rect.y(), initial_rect.width(),
            initial_rect.height(), tracker->url, tracker->frame_name,
            tracker->referrer, tracker->raw_features, tracker->body)) {
-    // TODO(zcbenz): Can we make this sync?
-    api_web_contents->DestroyWebContents(true /* async */);
+    api_web_contents->DestroyWebContents(false /* async */);
   }
 }
 
@@ -956,6 +1058,19 @@ void WebContents::BeforeUnloadFired(bool proceed,
 void WebContents::RenderViewCreated(content::RenderViewHost* render_view_host) {
   if (!background_throttling_)
     render_view_host->SetSchedulerThrottling(false);
+
+  // Set the background color of RenderWidgetHostView.
+  auto* const view = web_contents()->GetRenderWidgetHostView();
+  auto* web_preferences = WebContentsPreferences::From(web_contents());
+  if (view && web_preferences) {
+    std::string color_name;
+    if (web_preferences->GetPreference(options::kBackgroundColor,
+                                       &color_name)) {
+      view->SetBackgroundColor(ParseHexColor(color_name));
+    } else {
+      view->SetBackgroundColor(SK_ColorTRANSPARENT);
+    }
+  }
 }
 
 void WebContents::RenderFrameCreated(
@@ -996,7 +1111,13 @@ void WebContents::RenderViewDeleted(content::RenderViewHost* render_view_host) {
 }
 
 void WebContents::RenderProcessGone(base::TerminationStatus status) {
+  auto weak_this = GetWeakPtr();
   Emit("crashed", status == base::TERMINATION_STATUS_PROCESS_WAS_KILLED);
+
+  // User might destroy WebContents in the crashed event.
+  if (!weak_this)
+    return;
+
   v8::HandleScope handle_scope(isolate());
   gin_helper::Dictionary details =
       gin_helper::Dictionary::CreateEmpty(isolate());
@@ -1145,6 +1266,12 @@ void WebContents::Invoke(bool internal,
                  std::move(callback), internal, channel, std::move(arguments));
 }
 
+void WebContents::OnFirstNonEmptyLayout() {
+  if (receivers_.current_context() == web_contents()->GetMainFrame()) {
+    Emit("ready-to-show");
+  }
+}
+
 void WebContents::ReceivePostMessage(const std::string& channel,
                                      blink::TransferableMessage message) {
   v8::HandleScope handle_scope(isolate());
@@ -1362,6 +1489,7 @@ void WebContents::DevToolsFocused() {
 void WebContents::DevToolsOpened() {
   v8::Locker locker(isolate());
   v8::HandleScope handle_scope(isolate());
+  DCHECK(managed_web_contents());
   auto handle =
       FromOrCreate(isolate(), managed_web_contents()->GetDevToolsWebContents());
   devtools_web_contents_.Reset(isolate(), handle.ToV8());
@@ -1388,6 +1516,11 @@ void WebContents::DevToolsClosed() {
   Emit("devtools-closed");
 }
 
+void WebContents::DevToolsResized() {
+  for (ExtendedWebContentsObserver& observer : observers_)
+    observer.OnDevToolsResized();
+}
+
 bool WebContents::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(WebContents, message)
@@ -1566,21 +1699,6 @@ void WebContents::LoadURL(const GURL& url,
   // It's not safe to assume that |this| points to valid memory at this point.
   if (!weak_this)
     return;
-
-  // Set the background color of RenderWidgetHostView.
-  // We have to call it right after LoadURL because the RenderViewHost is only
-  // created after loading a page.
-  auto* const view = weak_this->web_contents()->GetRenderWidgetHostView();
-  if (view) {
-    auto* web_preferences = WebContentsPreferences::From(web_contents());
-    std::string color_name;
-    if (web_preferences->GetPreference(options::kBackgroundColor,
-                                       &color_name)) {
-      view->SetBackgroundColor(ParseHexColor(color_name));
-    } else {
-      view->SetBackgroundColor(SK_ColorTRANSPARENT);
-    }
-  }
 }
 
 void WebContents::DownloadURL(const GURL& url) {
@@ -1686,7 +1804,8 @@ void WebContents::OpenDevTools(gin_helper::Arguments* args) {
     return;
 
   std::string state;
-  if (type_ == Type::WEB_VIEW || !owner_window()) {
+  if (type_ == Type::WEB_VIEW || type_ == Type::BACKGROUND_PAGE ||
+      !owner_window()) {
     state = "detach";
   }
   bool activate = true;
@@ -1697,6 +1816,8 @@ void WebContents::OpenDevTools(gin_helper::Arguments* args) {
       options.Get("activate", &activate);
     }
   }
+
+  DCHECK(managed_web_contents());
   managed_web_contents()->SetDockState(state);
   managed_web_contents()->ShowDevTools(activate);
 }
@@ -1705,6 +1826,7 @@ void WebContents::CloseDevTools() {
   if (type_ == Type::REMOTE)
     return;
 
+  DCHECK(managed_web_contents());
   managed_web_contents()->CloseDevTools();
 }
 
@@ -1712,6 +1834,7 @@ bool WebContents::IsDevToolsOpened() {
   if (type_ == Type::REMOTE)
     return false;
 
+  DCHECK(managed_web_contents());
   return managed_web_contents()->IsDevToolsViewShowing();
 }
 
@@ -1719,6 +1842,7 @@ bool WebContents::IsDevToolsFocused() {
   if (type_ == Type::REMOTE)
     return false;
 
+  DCHECK(managed_web_contents());
   return managed_web_contents()->GetView()->IsDevToolsViewFocused();
 }
 
@@ -1727,6 +1851,7 @@ void WebContents::EnableDeviceEmulation(
   if (type_ == Type::REMOTE)
     return;
 
+  DCHECK(web_contents());
   auto* frame_host = web_contents()->GetMainFrame();
   if (frame_host) {
     auto* widget_host =
@@ -1742,6 +1867,7 @@ void WebContents::DisableDeviceEmulation() {
   if (type_ == Type::REMOTE)
     return;
 
+  DCHECK(web_contents());
   auto* frame_host = web_contents()->GetMainFrame();
   if (frame_host) {
     auto* widget_host =
@@ -1767,6 +1893,7 @@ void WebContents::InspectElement(int x, int y) {
   if (!enable_devtools_)
     return;
 
+  DCHECK(managed_web_contents());
   if (!managed_web_contents()->GetDevToolsWebContents())
     OpenDevTools(nullptr);
   managed_web_contents()->InspectElement(x, y);
@@ -2026,14 +2153,15 @@ void WebContents::Print(gin_helper::Arguments* args) {
       int from, to;
       if (range.Get("from", &from) && range.Get("to", &to)) {
         base::Value range(base::Value::Type::DICTIONARY);
-        range.SetIntKey(printing::kSettingPageRangeFrom, from);
-        range.SetIntKey(printing::kSettingPageRangeTo, to);
+        // Chromium uses 1-based page ranges, so increment each by 1.
+        range.SetIntKey(printing::kSettingPageRangeFrom, from + 1);
+        range.SetIntKey(printing::kSettingPageRangeTo, to + 1);
         page_range_list.Append(std::move(range));
       } else {
         continue;
       }
     }
-    if (page_range_list.GetList().size() > 0)
+    if (!page_range_list.GetList().empty())
       settings.SetPath(printing::kSettingPageRange, std::move(page_range_list));
   }
 
@@ -2065,16 +2193,15 @@ void WebContents::Print(gin_helper::Arguments* args) {
     settings.SetIntKey(printing::kSettingDpiVertical, dpi);
   }
 
-  base::ThreadPool::PostTaskAndReplyWithResult(
-      FROM_HERE, {base::MayBlock(), base::TaskPriority::USER_BLOCKING},
-      base::BindOnce(&GetDefaultPrinterAsync),
+  print_task_runner_->PostTaskAndReplyWithResult(
+      FROM_HERE, base::BindOnce(&GetDefaultPrinterAsync),
       base::BindOnce(&WebContents::OnGetDefaultPrinter,
                      weak_factory_.GetWeakPtr(), std::move(settings),
                      std::move(callback), device_name, silent));
 }
 
-std::vector<printing::PrinterBasicInfo> WebContents::GetPrinterList() {
-  std::vector<printing::PrinterBasicInfo> printers;
+printing::PrinterList WebContents::GetPrinterList() {
+  printing::PrinterList printers;
   auto print_backend = printing::PrintBackend::CreateInstance(
       nullptr, g_browser_process->GetApplicationLocale());
   {
@@ -2266,7 +2393,7 @@ bool WebContents::SendIPCMessageWithSender(bool internal,
 
 bool WebContents::SendIPCMessageToFrame(bool internal,
                                         bool send_to_all,
-                                        int32_t frame_id,
+                                        v8::Local<v8::Value> frame,
                                         const std::string& channel,
                                         v8::Local<v8::Value> args) {
   blink::CloneableMessage message;
@@ -2275,17 +2402,30 @@ bool WebContents::SendIPCMessageToFrame(bool internal,
         gin::StringToV8(isolate(), "Failed to serialize arguments")));
     return false;
   }
-  auto frames = web_contents()->GetAllFrames();
-  auto iter = std::find_if(frames.begin(), frames.end(), [frame_id](auto* f) {
-    return f->GetRoutingID() == frame_id;
-  });
-  if (iter == frames.end())
-    return false;
-  if (!(*iter)->IsRenderFrameLive())
+  int32_t frame_id;
+  int32_t process_id;
+  if (gin::ConvertFromV8(isolate(), frame, &frame_id)) {
+    process_id = web_contents()->GetMainFrame()->GetProcess()->GetID();
+  } else {
+    std::vector<int32_t> id_pair;
+    if (gin::ConvertFromV8(isolate(), frame, &id_pair) && id_pair.size() == 2) {
+      process_id = id_pair[0];
+      frame_id = id_pair[1];
+    } else {
+      isolate()->ThrowException(v8::Exception::Error(gin::StringToV8(
+          isolate(),
+          "frameId must be a number or a pair of [processId, frameId]")));
+      return false;
+    }
+  }
+
+  auto* rfh = content::RenderFrameHost::FromID(process_id, frame_id);
+  if (!rfh || !rfh->IsRenderFrameLive() ||
+      content::WebContents::FromRenderFrameHost(rfh) != web_contents())
     return false;
 
   mojo::AssociatedRemote<mojom::ElectronRenderer> electron_renderer;
-  (*iter)->GetRemoteAssociatedInterfaces()->GetInterface(&electron_renderer);
+  rfh->GetRemoteAssociatedInterfaces()->GetInterface(&electron_renderer);
   electron_renderer->Message(internal, send_to_all, channel, std::move(message),
                              0 /* sender_id */);
   return true;
@@ -2678,6 +2818,10 @@ v8::Local<v8::Value> WebContents::Debugger(v8::Isolate* isolate) {
   return v8::Local<v8::Value>::New(isolate, debugger_);
 }
 
+bool WebContents::WasInitiallyShown() {
+  return initially_shown_;
+}
+
 void WebContents::GrantOriginAccess(const GURL& url) {
   content::ChildProcessSecurityPolicy::GetInstance()->GrantCommitOrigin(
       web_contents()->GetMainFrame()->GetProcess()->GetID(),
@@ -2852,7 +2996,8 @@ void WebContents::BuildPrototype(v8::Isolate* isolate,
       .SetProperty("session", &WebContents::Session)
       .SetProperty("hostWebContents", &WebContents::HostWebContents)
       .SetProperty("devToolsWebContents", &WebContents::DevToolsWebContents)
-      .SetProperty("debugger", &WebContents::Debugger);
+      .SetProperty("debugger", &WebContents::Debugger)
+      .SetProperty("_initiallyShown", &WebContents::WasInitiallyShown);
 }
 
 ElectronBrowserContext* WebContents::GetBrowserContext() const {
@@ -2897,6 +3042,33 @@ gin::Handle<WebContents> WebContents::FromOrCreate(
     return gin::CreateHandle(isolate, new WebContents(isolate, web_contents));
 }
 
+// static
+gin::Handle<WebContents> WebContents::CreateFromWebPreferences(
+    v8::Isolate* isolate,
+    const gin_helper::Dictionary& web_preferences) {
+  // Check if webPreferences has |webContents| option.
+  gin::Handle<WebContents> web_contents;
+  if (web_preferences.GetHidden("webContents", &web_contents) &&
+      !web_contents.IsEmpty()) {
+    // Set webPreferences from options if using an existing webContents.
+    // These preferences will be used when the webContent launches new
+    // render processes.
+    auto* existing_preferences =
+        WebContentsPreferences::From(web_contents->web_contents());
+    base::DictionaryValue web_preferences_dict;
+    if (gin::ConvertFromV8(isolate, web_preferences.GetHandle(),
+                           &web_preferences_dict)) {
+      existing_preferences->Clear();
+      existing_preferences->Merge(web_preferences_dict);
+    }
+  } else {
+    // Create one if not.
+    web_contents = WebContents::Create(isolate, web_preferences);
+  }
+
+  return web_contents;
+}
+
 }  // namespace api
 
 }  // namespace electron
diff --git a/shell/browser/api/electron_api_web_contents.h b/shell/browser/api/electron_api_web_contents.h
index 6e88384e4dc6c..64d30dee0f706 100644
--- a/shell/browser/api/electron_api_web_contents.h
+++ b/shell/browser/api/electron_api_web_contents.h
@@ -28,6 +28,7 @@
 #include "shell/browser/api/frame_subscriber.h"
 #include "shell/browser/api/save_page_handler.h"
 #include "shell/browser/common_web_contents_delegate.h"
+#include "shell/browser/extended_web_contents_observer.h"
 #include "shell/common/gin_helper/trackable_object.h"
 #include "ui/gfx/image/image.h"
 
@@ -43,6 +44,8 @@
 #endif
 
 #if BUILDFLAG(ENABLE_ELECTRON_EXTENSIONS)
+#include "extensions/common/view_type.h"
+
 namespace extensions {
 class ScriptExecutor;
 }
@@ -111,22 +114,6 @@ class OffScreenRenderWidgetHostView;
 
 namespace api {
 
-// Certain events are only in WebContentsDelegate, provide our own Observer to
-// dispatch those events.
-class ExtendedWebContentsObserver : public base::CheckedObserver {
- public:
-  virtual void OnCloseContents() {}
-  virtual void OnDraggableRegionsUpdated(
-      const std::vector<mojom::DraggableRegionPtr>& regions) {}
-  virtual void OnSetContentBounds(const gfx::Rect& rect) {}
-  virtual void OnActivateContents() {}
-  virtual void OnPageTitleUpdated(const base::string16& title,
-                                  bool explicit_set) {}
-
- protected:
-  ~ExtendedWebContentsObserver() override {}
-};
-
 // Wrapper around the content::WebContents.
 class WebContents : public gin_helper::TrackableObject<WebContents>,
                     public CommonWebContentsDelegate,
@@ -134,7 +121,7 @@ class WebContents : public gin_helper::TrackableObject<WebContents>,
                     public mojom::ElectronBrowser {
  public:
   enum class Type {
-    BACKGROUND_PAGE,  // A DevTools extension background page.
+    BACKGROUND_PAGE,  // An extension background page.
     BROWSER_WINDOW,   // Used by BrowserWindow.
     BROWSER_VIEW,     // Used by BrowserView.
     REMOTE,           // Thin wrap around an existing WebContents.
@@ -169,6 +156,10 @@ class WebContents : public gin_helper::TrackableObject<WebContents>,
   static void BuildPrototype(v8::Isolate* isolate,
                              v8::Local<v8::FunctionTemplate> prototype);
 
+  static gin::Handle<WebContents> CreateFromWebPreferences(
+      v8::Isolate* isolate,
+      const gin_helper::Dictionary& web_preferences);
+
   base::WeakPtr<WebContents> GetWeakPtr() { return weak_factory_.GetWeakPtr(); }
 
   // Destroy the managed content::WebContents instance.
@@ -244,7 +235,7 @@ class WebContents : public gin_helper::TrackableObject<WebContents>,
                            bool silent,
                            base::string16 default_printer);
   void Print(gin_helper::Arguments* args);
-  std::vector<printing::PrinterBasicInfo> GetPrinterList();
+  printing::PrinterList GetPrinterList();
   // Print current page as PDF.
   v8::Local<v8::Promise> PrintToPDF(base::DictionaryValue settings);
 #endif
@@ -289,7 +280,7 @@ class WebContents : public gin_helper::TrackableObject<WebContents>,
 
   bool SendIPCMessageToFrame(bool internal,
                              bool send_to_all,
-                             int32_t frame_id,
+                             v8::Local<v8::Value> frame,
                              const std::string& channel,
                              v8::Local<v8::Value> args);
 
@@ -376,6 +367,7 @@ class WebContents : public gin_helper::TrackableObject<WebContents>,
   content::WebContents* HostWebContents() const;
   v8::Local<v8::Value> DevToolsWebContents(v8::Isolate* isolate);
   v8::Local<v8::Value> Debugger(v8::Isolate* isolate);
+  bool WasInitiallyShown();
 
   WebContentsZoomController* GetZoomController() { return zoom_controller_; }
 
@@ -416,6 +408,12 @@ class WebContents : public gin_helper::TrackableObject<WebContents>,
       gin::Handle<class Session> session,
       const gin_helper::Dictionary& options);
 
+#if BUILDFLAG(ENABLE_ELECTRON_EXTENSIONS)
+  void InitWithExtensionView(v8::Isolate* isolate,
+                             content::WebContents* web_contents,
+                             extensions::ViewType view_type);
+#endif
+
   // content::WebContentsDelegate:
   bool DidAddMessageToConsole(content::WebContents* source,
                               blink::mojom::ConsoleMessageLevel level,
@@ -560,6 +558,7 @@ class WebContents : public gin_helper::TrackableObject<WebContents>,
   void DevToolsFocused() override;
   void DevToolsOpened() override;
   void DevToolsClosed() override;
+  void DevToolsResized() override;
 
  private:
   ElectronBrowserContext* GetBrowserContext() const;
@@ -586,6 +585,7 @@ class WebContents : public gin_helper::TrackableObject<WebContents>,
               const std::string& channel,
               blink::CloneableMessage arguments,
               InvokeCallback callback) override;
+  void OnFirstNonEmptyLayout() override;
   void ReceivePostMessage(const std::string& channel,
                           blink::TransferableMessage message) override;
   void MessageSync(bool internal,
@@ -650,10 +650,16 @@ class WebContents : public gin_helper::TrackableObject<WebContents>,
   // Observers of this WebContents.
   base::ObserverList<ExtendedWebContentsObserver> observers_;
 
+  bool initially_shown_ = true;
+
   // The ID of the process of the currently committed RenderViewHost.
   // -1 means no speculative RVH has been committed yet.
   int currently_committed_process_id_ = -1;
 
+#if BUILDFLAG(ENABLE_PRINTING)
+  scoped_refptr<base::TaskRunner> print_task_runner_;
+#endif
+
   service_manager::BinderRegistryWithArgs<content::RenderFrameHost*> registry_;
   mojo::ReceiverSet<mojom::ElectronBrowser, content::RenderFrameHost*>
       receivers_;
diff --git a/shell/browser/api/electron_api_web_contents_view.cc b/shell/browser/api/electron_api_web_contents_view.cc
index 23e0821d87eef..dcb66e3391ab3 100644
--- a/shell/browser/api/electron_api_web_contents_view.cc
+++ b/shell/browser/api/electron_api_web_contents_view.cc
@@ -96,25 +96,9 @@ v8::Local<v8::Function> WebContentsView::GetConstructor(v8::Isolate* isolate) {
 gin_helper::WrappableBase* WebContentsView::New(
     gin_helper::Arguments* args,
     const gin_helper::Dictionary& web_preferences) {
-  // Check if BrowserWindow has passend |webContents| option to us.
-  gin::Handle<WebContents> web_contents;
-  if (web_preferences.GetHidden("webContents", &web_contents) &&
-      !web_contents.IsEmpty()) {
-    // Set webPreferences from options if using an existing webContents.
-    // These preferences will be used when the webContent launches new
-    // render processes.
-    auto* existing_preferences =
-        WebContentsPreferences::From(web_contents->web_contents());
-    base::DictionaryValue web_preferences_dict;
-    if (gin::ConvertFromV8(args->isolate(), web_preferences.GetHandle(),
-                           &web_preferences_dict)) {
-      existing_preferences->Clear();
-      existing_preferences->Merge(web_preferences_dict);
-    }
-  } else {
-    // Create one if not.
-    web_contents = WebContents::Create(args->isolate(), web_preferences);
-  }
+  auto web_contents =
+      WebContents::CreateFromWebPreferences(args->isolate(), web_preferences);
+
   // Constructor call.
   auto* view = new WebContentsView(args->isolate(), web_contents);
   view->InitWithArgs(args);
diff --git a/shell/browser/api/process_metric.cc b/shell/browser/api/process_metric.cc
index 6e8de05ab66dc..c2f845f6caa8c 100644
--- a/shell/browser/api/process_metric.cc
+++ b/shell/browser/api/process_metric.cc
@@ -101,7 +101,7 @@ ProcessIntegrityLevel ProcessMetric::GetIntegrityLevel() const {
   }
 
   auto token_label_bytes = std::make_unique<char[]>(token_info_length);
-  TOKEN_MANDATORY_LABEL* token_label =
+  auto* token_label =
       reinterpret_cast<TOKEN_MANDATORY_LABEL*>(token_label_bytes.get());
   if (!::GetTokenInformation(token, TokenIntegrityLevel, token_label,
                              token_info_length, &token_info_length)) {
diff --git a/shell/browser/browser.h b/shell/browser/browser.h
index 0cce2b2750808..40f55f28a8fe5 100644
--- a/shell/browser/browser.h
+++ b/shell/browser/browser.h
@@ -317,6 +317,7 @@ class Browser : public WindowListObserver {
 
 #if defined(OS_MACOSX)
   std::unique_ptr<ui::ScopedPasswordInputEnabler> password_input_enabler_;
+  base::Time last_dock_show_;
 #endif
 
 #if defined(OS_LINUX) || defined(OS_WIN)
diff --git a/shell/browser/browser_mac.mm b/shell/browser/browser_mac.mm
index ec0f832479ef1..df9a715044050 100644
--- a/shell/browser/browser_mac.mm
+++ b/shell/browser/browser_mac.mm
@@ -330,6 +330,20 @@ void RemoveFromLoginItems() {
 }
 
 void Browser::DockHide() {
+  // Transforming application state from UIElement to Foreground is an
+  // asyncronous operation, and unfortunately there is currently no way to know
+  // when it is finished.
+  // So if we call DockHide => DockShow => DockHide => DockShow in a very short
+  // time, we would triger a bug of macOS that, there would be multiple dock
+  // icons of the app left in system.
+  // To work around this, we make sure DockHide does nothing if it is called
+  // immediately after DockShow. After some experiments, 1 second seems to be
+  // a proper interval.
+  if (!last_dock_show_.is_null() &&
+      base::Time::Now() - last_dock_show_ < base::TimeDelta::FromSeconds(1)) {
+    return;
+  }
+
   for (auto* const& window : WindowList::GetWindows())
     [window->GetNativeWindow().GetNativeNSWindow() setCanHide:NO];
 
@@ -345,6 +359,7 @@ void RemoveFromLoginItems() {
 }
 
 v8::Local<v8::Promise> Browser::DockShow(v8::Isolate* isolate) {
+  last_dock_show_ = base::Time::Now();
   gin_helper::Promise<void> promise(isolate);
   v8::Local<v8::Promise> handle = promise.GetHandle();
 
diff --git a/shell/browser/common_web_contents_delegate_mac.mm b/shell/browser/common_web_contents_delegate_mac.mm
index f3a86f91ac30e..941441d28a59a 100644
--- a/shell/browser/common_web_contents_delegate_mac.mm
+++ b/shell/browser/common_web_contents_delegate_mac.mm
@@ -9,6 +9,7 @@
 #include "content/public/browser/native_web_keyboard_event.h"
 #include "shell/browser/ui/cocoa/event_dispatching_window.h"
 #include "shell/browser/web_contents_preferences.h"
+#include "ui/base/cocoa/command_dispatcher.h"
 #include "ui/events/keycodes/keyboard_codes.h"
 
 @interface NSWindow (EventDispatchingWindow)
@@ -48,6 +49,16 @@ - (void)redispatchKeyEvent:(NSEvent*)event;
     // devtools windows as Widgets in order to take advantage of the
     // pre-existing redispatch code in bridged_native_widget.
     return false;
+  } else if (event.os_event.window &&
+             [event.os_event.window
+                 conformsToProtocol:@protocol(CommandDispatchingWindow)]) {
+    NSObject<CommandDispatchingWindow>* window =
+        static_cast<NSObject<CommandDispatchingWindow>*>(event.os_event.window);
+    [[window commandDispatcher] redispatchKeyEvent:event.os_event];
+    // FIXME(clavin): Not exactly sure what to return here, likely the same
+    // situation as the branch above. If a future refactor removes
+    // |EventDispatchingWindow| then only this branch will need to remain.
+    return false;
   }
 
   return false;
diff --git a/shell/browser/electron_autofill_driver.cc b/shell/browser/electron_autofill_driver.cc
index 6ce958861dae0..e835a2714a5f4 100644
--- a/shell/browser/electron_autofill_driver.cc
+++ b/shell/browser/electron_autofill_driver.cc
@@ -1,66 +1,66 @@
-// Copyright (c) 2019 GitHub, Inc.
-// Use of this source code is governed by the MIT license that can be
-// found in the LICENSE file.
-
-#include "shell/browser/electron_autofill_driver.h"
-
-#include <memory>
-
-#include <utility>
-
-#include "content/public/browser/render_widget_host_view.h"
-#include "shell/browser/api/electron_api_web_contents.h"
-#include "shell/browser/native_window.h"
-
-namespace electron {
-
-AutofillDriver::AutofillDriver(
-    content::RenderFrameHost* render_frame_host,
-    mojom::ElectronAutofillDriverAssociatedRequest request)
-    : render_frame_host_(render_frame_host), binding_(this) {
-  autofill_popup_ = std::make_unique<AutofillPopup>();
-  binding_.Bind(std::move(request));
-}
-
-AutofillDriver::~AutofillDriver() = default;
-
-void AutofillDriver::ShowAutofillPopup(
-    const gfx::RectF& bounds,
-    const std::vector<base::string16>& values,
-    const std::vector<base::string16>& labels) {
-  v8::Isolate* isolate = v8::Isolate::GetCurrent();
-  v8::HandleScope scope(isolate);
-  auto* web_contents =
-      api::WebContents::From(isolate, content::WebContents::FromRenderFrameHost(
-                                          render_frame_host_))
-          .get();
-  if (!web_contents || !web_contents->owner_window())
-    return;
-
-  auto* embedder = web_contents->embedder();
-
-  bool osr =
-      web_contents->IsOffScreen() || (embedder && embedder->IsOffScreen());
-  gfx::RectF popup_bounds(bounds);
-  content::RenderFrameHost* embedder_frame_host = nullptr;
-  if (embedder) {
-    auto* embedder_view = embedder->web_contents()->GetMainFrame()->GetView();
-    auto* view = web_contents->web_contents()->GetMainFrame()->GetView();
-    auto offset = view->GetViewBounds().origin() -
-                  embedder_view->GetViewBounds().origin();
-    popup_bounds.Offset(offset);
-    embedder_frame_host = embedder->web_contents()->GetMainFrame();
-  }
-
-  autofill_popup_->CreateView(render_frame_host_, embedder_frame_host, osr,
-                              web_contents->owner_window()->content_view(),
-                              popup_bounds);
-  autofill_popup_->SetItems(values, labels);
-}
-
-void AutofillDriver::HideAutofillPopup() {
-  if (autofill_popup_)
-    autofill_popup_->Hide();
-}
-
-}  // namespace electron
+// Copyright (c) 2019 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "shell/browser/electron_autofill_driver.h"
+
+#include <memory>
+
+#include <utility>
+
+#include "content/public/browser/render_widget_host_view.h"
+#include "shell/browser/api/electron_api_web_contents.h"
+#include "shell/browser/native_window.h"
+
+namespace electron {
+
+AutofillDriver::AutofillDriver(
+    content::RenderFrameHost* render_frame_host,
+    mojom::ElectronAutofillDriverAssociatedRequest request)
+    : render_frame_host_(render_frame_host), binding_(this) {
+  autofill_popup_ = std::make_unique<AutofillPopup>();
+  binding_.Bind(std::move(request));
+}
+
+AutofillDriver::~AutofillDriver() = default;
+
+void AutofillDriver::ShowAutofillPopup(
+    const gfx::RectF& bounds,
+    const std::vector<base::string16>& values,
+    const std::vector<base::string16>& labels) {
+  v8::Isolate* isolate = v8::Isolate::GetCurrent();
+  v8::HandleScope scope(isolate);
+  auto* web_contents =
+      api::WebContents::From(isolate, content::WebContents::FromRenderFrameHost(
+                                          render_frame_host_))
+          .get();
+  if (!web_contents || !web_contents->owner_window())
+    return;
+
+  auto* embedder = web_contents->embedder();
+
+  bool osr =
+      web_contents->IsOffScreen() || (embedder && embedder->IsOffScreen());
+  gfx::RectF popup_bounds(bounds);
+  content::RenderFrameHost* embedder_frame_host = nullptr;
+  if (embedder) {
+    auto* embedder_view = embedder->web_contents()->GetMainFrame()->GetView();
+    auto* view = web_contents->web_contents()->GetMainFrame()->GetView();
+    auto offset = view->GetViewBounds().origin() -
+                  embedder_view->GetViewBounds().origin();
+    popup_bounds.Offset(offset);
+    embedder_frame_host = embedder->web_contents()->GetMainFrame();
+  }
+
+  autofill_popup_->CreateView(render_frame_host_, embedder_frame_host, osr,
+                              web_contents->owner_window()->content_view(),
+                              popup_bounds);
+  autofill_popup_->SetItems(values, labels);
+}
+
+void AutofillDriver::HideAutofillPopup() {
+  if (autofill_popup_)
+    autofill_popup_->Hide();
+}
+
+}  // namespace electron
diff --git a/shell/browser/electron_autofill_driver.h b/shell/browser/electron_autofill_driver.h
index 8cf68b68bfd5e..98ba569b7d945 100644
--- a/shell/browser/electron_autofill_driver.h
+++ b/shell/browser/electron_autofill_driver.h
@@ -1,44 +1,44 @@
-// Copyright (c) 2019 GitHub, Inc.
-// Use of this source code is governed by the MIT license that can be
-// found in the LICENSE file.
-
-#ifndef SHELL_BROWSER_ELECTRON_AUTOFILL_DRIVER_H_
-#define SHELL_BROWSER_ELECTRON_AUTOFILL_DRIVER_H_
-
-#include <memory>
-#include <vector>
-
-#if defined(TOOLKIT_VIEWS)
-#include "shell/browser/ui/autofill_popup.h"
-#endif
-
-#include "mojo/public/cpp/bindings/associated_binding.h"
-#include "shell/common/api/api.mojom.h"
-
-namespace electron {
-
-class AutofillDriver : public mojom::ElectronAutofillDriver {
- public:
-  AutofillDriver(content::RenderFrameHost* render_frame_host,
-                 mojom::ElectronAutofillDriverAssociatedRequest request);
-
-  ~AutofillDriver() override;
-
-  void ShowAutofillPopup(const gfx::RectF& bounds,
-                         const std::vector<base::string16>& values,
-                         const std::vector<base::string16>& labels) override;
-  void HideAutofillPopup() override;
-
- private:
-  content::RenderFrameHost* const render_frame_host_;
-
-#if defined(TOOLKIT_VIEWS)
-  std::unique_ptr<AutofillPopup> autofill_popup_;
-#endif
-
-  mojo::AssociatedBinding<mojom::ElectronAutofillDriver> binding_;
-};
-
-}  // namespace electron
-
-#endif  // SHELL_BROWSER_ELECTRON_AUTOFILL_DRIVER_H_
+// Copyright (c) 2019 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef SHELL_BROWSER_ELECTRON_AUTOFILL_DRIVER_H_
+#define SHELL_BROWSER_ELECTRON_AUTOFILL_DRIVER_H_
+
+#include <memory>
+#include <vector>
+
+#if defined(TOOLKIT_VIEWS)
+#include "shell/browser/ui/autofill_popup.h"
+#endif
+
+#include "mojo/public/cpp/bindings/associated_binding.h"
+#include "shell/common/api/api.mojom.h"
+
+namespace electron {
+
+class AutofillDriver : public mojom::ElectronAutofillDriver {
+ public:
+  AutofillDriver(content::RenderFrameHost* render_frame_host,
+                 mojom::ElectronAutofillDriverAssociatedRequest request);
+
+  ~AutofillDriver() override;
+
+  void ShowAutofillPopup(const gfx::RectF& bounds,
+                         const std::vector<base::string16>& values,
+                         const std::vector<base::string16>& labels) override;
+  void HideAutofillPopup() override;
+
+ private:
+  content::RenderFrameHost* const render_frame_host_;
+
+#if defined(TOOLKIT_VIEWS)
+  std::unique_ptr<AutofillPopup> autofill_popup_;
+#endif
+
+  mojo::AssociatedBinding<mojom::ElectronAutofillDriver> binding_;
+};
+
+}  // namespace electron
+
+#endif  // SHELL_BROWSER_ELECTRON_AUTOFILL_DRIVER_H_
diff --git a/shell/browser/electron_autofill_driver_factory.cc b/shell/browser/electron_autofill_driver_factory.cc
index 4e95cfb427894..ee8168ba64cd2 100644
--- a/shell/browser/electron_autofill_driver_factory.cc
+++ b/shell/browser/electron_autofill_driver_factory.cc
@@ -1,111 +1,111 @@
-// Copyright (c) 2019 GitHub, Inc.
-// Use of this source code is governed by the MIT license that can be
-// found in the LICENSE file.
-
-#include "shell/browser/electron_autofill_driver_factory.h"
-
-#include <memory>
-#include <utility>
-#include <vector>
-
-#include "base/bind.h"
-#include "base/callback.h"
-#include "content/public/browser/navigation_handle.h"
-#include "content/public/browser/render_frame_host.h"
-#include "content/public/browser/web_contents.h"
-#include "shell/browser/electron_autofill_driver.h"
-
-namespace electron {
-
-namespace {
-
-std::unique_ptr<AutofillDriver> CreateDriver(
-    content::RenderFrameHost* render_frame_host,
-    mojom::ElectronAutofillDriverAssociatedRequest request) {
-  return std::make_unique<AutofillDriver>(render_frame_host,
-                                          std::move(request));
-}
-
-}  // namespace
-
-AutofillDriverFactory::~AutofillDriverFactory() = default;
-
-// static
-void AutofillDriverFactory::BindAutofillDriver(
-    mojom::ElectronAutofillDriverAssociatedRequest request,
-    content::RenderFrameHost* render_frame_host) {
-  content::WebContents* web_contents =
-      content::WebContents::FromRenderFrameHost(render_frame_host);
-  if (!web_contents)
-    return;
-
-  AutofillDriverFactory* factory =
-      AutofillDriverFactory::FromWebContents(web_contents);
-  if (!factory)
-    return;
-
-  AutofillDriver* driver = factory->DriverForFrame(render_frame_host);
-  if (!driver)
-    factory->AddDriverForFrame(
-        render_frame_host,
-        base::BindOnce(CreateDriver, render_frame_host, std::move(request)));
-}
-
-AutofillDriverFactory::AutofillDriverFactory(content::WebContents* web_contents)
-    : content::WebContentsObserver(web_contents) {
-  const std::vector<content::RenderFrameHost*> frames =
-      web_contents->GetAllFrames();
-  for (content::RenderFrameHost* frame : frames) {
-    if (frame->IsRenderFrameLive())
-      RenderFrameCreated(frame);
-  }
-}
-
-void AutofillDriverFactory::RenderFrameDeleted(
-    content::RenderFrameHost* render_frame_host) {
-  DeleteDriverForFrame(render_frame_host);
-}
-
-void AutofillDriverFactory::DidFinishNavigation(
-    content::NavigationHandle* navigation_handle) {
-  // For the purposes of this code, a navigation is not important if it has not
-  // committed yet or if it's in a subframe.
-  if (!navigation_handle->HasCommitted() ||
-      !navigation_handle->IsInMainFrame()) {
-    return;
-  }
-
-  CloseAllPopups();
-}
-
-AutofillDriver* AutofillDriverFactory::DriverForFrame(
-    content::RenderFrameHost* render_frame_host) {
-  auto mapping = driver_map_.find(render_frame_host);
-  return mapping == driver_map_.end() ? nullptr : mapping->second.get();
-}
-
-void AutofillDriverFactory::AddDriverForFrame(
-    content::RenderFrameHost* render_frame_host,
-    CreationCallback factory_method) {
-  auto insertion_result =
-      driver_map_.insert(std::make_pair(render_frame_host, nullptr));
-  // This can be called twice for the key representing the main frame.
-  if (insertion_result.second) {
-    insertion_result.first->second = std::move(factory_method).Run();
-  }
-}
-
-void AutofillDriverFactory::DeleteDriverForFrame(
-    content::RenderFrameHost* render_frame_host) {
-  driver_map_.erase(render_frame_host);
-}
-
-void AutofillDriverFactory::CloseAllPopups() {
-  for (auto& it : driver_map_) {
-    it.second->HideAutofillPopup();
-  }
-}
-
-WEB_CONTENTS_USER_DATA_KEY_IMPL(AutofillDriverFactory)
-
-}  // namespace electron
+// Copyright (c) 2019 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "shell/browser/electron_autofill_driver_factory.h"
+
+#include <memory>
+#include <utility>
+#include <vector>
+
+#include "base/bind.h"
+#include "base/callback.h"
+#include "content/public/browser/navigation_handle.h"
+#include "content/public/browser/render_frame_host.h"
+#include "content/public/browser/web_contents.h"
+#include "shell/browser/electron_autofill_driver.h"
+
+namespace electron {
+
+namespace {
+
+std::unique_ptr<AutofillDriver> CreateDriver(
+    content::RenderFrameHost* render_frame_host,
+    mojom::ElectronAutofillDriverAssociatedRequest request) {
+  return std::make_unique<AutofillDriver>(render_frame_host,
+                                          std::move(request));
+}
+
+}  // namespace
+
+AutofillDriverFactory::~AutofillDriverFactory() = default;
+
+// static
+void AutofillDriverFactory::BindAutofillDriver(
+    mojom::ElectronAutofillDriverAssociatedRequest request,
+    content::RenderFrameHost* render_frame_host) {
+  content::WebContents* web_contents =
+      content::WebContents::FromRenderFrameHost(render_frame_host);
+  if (!web_contents)
+    return;
+
+  AutofillDriverFactory* factory =
+      AutofillDriverFactory::FromWebContents(web_contents);
+  if (!factory)
+    return;
+
+  AutofillDriver* driver = factory->DriverForFrame(render_frame_host);
+  if (!driver)
+    factory->AddDriverForFrame(
+        render_frame_host,
+        base::BindOnce(CreateDriver, render_frame_host, std::move(request)));
+}
+
+AutofillDriverFactory::AutofillDriverFactory(content::WebContents* web_contents)
+    : content::WebContentsObserver(web_contents) {
+  const std::vector<content::RenderFrameHost*> frames =
+      web_contents->GetAllFrames();
+  for (content::RenderFrameHost* frame : frames) {
+    if (frame->IsRenderFrameLive())
+      RenderFrameCreated(frame);
+  }
+}
+
+void AutofillDriverFactory::RenderFrameDeleted(
+    content::RenderFrameHost* render_frame_host) {
+  DeleteDriverForFrame(render_frame_host);
+}
+
+void AutofillDriverFactory::DidFinishNavigation(
+    content::NavigationHandle* navigation_handle) {
+  // For the purposes of this code, a navigation is not important if it has not
+  // committed yet or if it's in a subframe.
+  if (!navigation_handle->HasCommitted() ||
+      !navigation_handle->IsInMainFrame()) {
+    return;
+  }
+
+  CloseAllPopups();
+}
+
+AutofillDriver* AutofillDriverFactory::DriverForFrame(
+    content::RenderFrameHost* render_frame_host) {
+  auto mapping = driver_map_.find(render_frame_host);
+  return mapping == driver_map_.end() ? nullptr : mapping->second.get();
+}
+
+void AutofillDriverFactory::AddDriverForFrame(
+    content::RenderFrameHost* render_frame_host,
+    CreationCallback factory_method) {
+  auto insertion_result =
+      driver_map_.insert(std::make_pair(render_frame_host, nullptr));
+  // This can be called twice for the key representing the main frame.
+  if (insertion_result.second) {
+    insertion_result.first->second = std::move(factory_method).Run();
+  }
+}
+
+void AutofillDriverFactory::DeleteDriverForFrame(
+    content::RenderFrameHost* render_frame_host) {
+  driver_map_.erase(render_frame_host);
+}
+
+void AutofillDriverFactory::CloseAllPopups() {
+  for (auto& it : driver_map_) {
+    it.second->HideAutofillPopup();
+  }
+}
+
+WEB_CONTENTS_USER_DATA_KEY_IMPL(AutofillDriverFactory)
+
+}  // namespace electron
diff --git a/shell/browser/electron_autofill_driver_factory.h b/shell/browser/electron_autofill_driver_factory.h
index 23784fc9ec1e9..359387f6040ac 100644
--- a/shell/browser/electron_autofill_driver_factory.h
+++ b/shell/browser/electron_autofill_driver_factory.h
@@ -1,57 +1,57 @@
-// Copyright (c) 2019 GitHub, Inc.
-// Use of this source code is governed by the MIT license that can be
-// found in the LICENSE file.
-
-#ifndef SHELL_BROWSER_ELECTRON_AUTOFILL_DRIVER_FACTORY_H_
-#define SHELL_BROWSER_ELECTRON_AUTOFILL_DRIVER_FACTORY_H_
-
-#include <memory>
-#include <unordered_map>
-
-#include "base/callback_forward.h"
-#include "content/public/browser/web_contents_observer.h"
-#include "content/public/browser/web_contents_user_data.h"
-#include "shell/common/api/api.mojom.h"
-
-namespace electron {
-
-class AutofillDriver;
-
-class AutofillDriverFactory
-    : public content::WebContentsObserver,
-      public content::WebContentsUserData<AutofillDriverFactory> {
- public:
-  typedef base::OnceCallback<std::unique_ptr<AutofillDriver>()>
-      CreationCallback;
-
-  ~AutofillDriverFactory() override;
-
-  static void BindAutofillDriver(
-      mojom::ElectronAutofillDriverAssociatedRequest request,
-      content::RenderFrameHost* render_frame_host);
-
-  // content::WebContentsObserver:
-  void RenderFrameDeleted(content::RenderFrameHost* render_frame_host) override;
-  void DidFinishNavigation(
-      content::NavigationHandle* navigation_handle) override;
-
-  AutofillDriver* DriverForFrame(content::RenderFrameHost* render_frame_host);
-  void AddDriverForFrame(content::RenderFrameHost* render_frame_host,
-                         CreationCallback factory_method);
-  void DeleteDriverForFrame(content::RenderFrameHost* render_frame_host);
-
-  void CloseAllPopups();
-
-  WEB_CONTENTS_USER_DATA_KEY_DECL();
-
- private:
-  explicit AutofillDriverFactory(content::WebContents* web_contents);
-  friend class content::WebContentsUserData<AutofillDriverFactory>;
-
-  std::unordered_map<content::RenderFrameHost*, std::unique_ptr<AutofillDriver>>
-      driver_map_;
-};
-
-}  // namespace electron
-
-#endif  // SHELL_BROWSER_ELECTRON_AUTOFILL_DRIVER_FACTORY_H_
+// Copyright (c) 2019 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef SHELL_BROWSER_ELECTRON_AUTOFILL_DRIVER_FACTORY_H_
+#define SHELL_BROWSER_ELECTRON_AUTOFILL_DRIVER_FACTORY_H_
+
+#include <memory>
+#include <unordered_map>
+
+#include "base/callback_forward.h"
+#include "content/public/browser/web_contents_observer.h"
+#include "content/public/browser/web_contents_user_data.h"
+#include "shell/common/api/api.mojom.h"
+
+namespace electron {
+
+class AutofillDriver;
+
+class AutofillDriverFactory
+    : public content::WebContentsObserver,
+      public content::WebContentsUserData<AutofillDriverFactory> {
+ public:
+  typedef base::OnceCallback<std::unique_ptr<AutofillDriver>()>
+      CreationCallback;
+
+  ~AutofillDriverFactory() override;
+
+  static void BindAutofillDriver(
+      mojom::ElectronAutofillDriverAssociatedRequest request,
+      content::RenderFrameHost* render_frame_host);
+
+  // content::WebContentsObserver:
+  void RenderFrameDeleted(content::RenderFrameHost* render_frame_host) override;
+  void DidFinishNavigation(
+      content::NavigationHandle* navigation_handle) override;
+
+  AutofillDriver* DriverForFrame(content::RenderFrameHost* render_frame_host);
+  void AddDriverForFrame(content::RenderFrameHost* render_frame_host,
+                         CreationCallback factory_method);
+  void DeleteDriverForFrame(content::RenderFrameHost* render_frame_host);
+
+  void CloseAllPopups();
+
+  WEB_CONTENTS_USER_DATA_KEY_DECL();
+
+ private:
+  explicit AutofillDriverFactory(content::WebContents* web_contents);
+  friend class content::WebContentsUserData<AutofillDriverFactory>;
+
+  std::unordered_map<content::RenderFrameHost*, std::unique_ptr<AutofillDriver>>
+      driver_map_;
+};
+
+}  // namespace electron
+
+#endif  // SHELL_BROWSER_ELECTRON_AUTOFILL_DRIVER_FACTORY_H_
diff --git a/shell/browser/electron_browser_client.cc b/shell/browser/electron_browser_client.cc
index cef61ea300fff..25818b768d649 100644
--- a/shell/browser/electron_browser_client.cc
+++ b/shell/browser/electron_browser_client.cc
@@ -96,6 +96,7 @@
 #include "shell/common/options_switches.h"
 #include "shell/common/platform_util.h"
 #include "third_party/blink/public/common/loader/url_loader_throttle.h"
+#include "third_party/blink/public/mojom/badging/badging.mojom.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/native_theme/native_theme.h"
 #include "v8/include/v8.h"
@@ -137,6 +138,7 @@
 #include "content/public/browser/file_url_loader.h"
 #include "content/public/browser/web_ui_url_loader_factory.h"
 #include "extensions/browser/api/mime_handler_private/mime_handler_private.h"
+#include "extensions/browser/api/web_request/web_request_api.h"
 #include "extensions/browser/browser_context_keyed_api_factory.h"
 #include "extensions/browser/extension_host.h"
 #include "extensions/browser/extension_message_filter.h"
@@ -699,10 +701,15 @@ void ElectronBrowserClient::AppendExtraCommandLineSwitches(
         content::ChildProcessHost::CHILD_RENDERER);
     auto gpu_child_path = content::ChildProcessHost::GetChildPath(
         content::ChildProcessHost::CHILD_GPU);
+#if BUILDFLAG(ENABLE_PLUGINS)
     auto plugin_child_path = content::ChildProcessHost::GetChildPath(
         content::ChildProcessHost::CHILD_PLUGIN);
-    if (program != renderer_child_path && program != gpu_child_path &&
-        program != plugin_child_path) {
+#endif
+    if (program != renderer_child_path && program != gpu_child_path
+#if BUILDFLAG(ENABLE_PLUGINS)
+        && program != plugin_child_path
+#endif
+    ) {
       child_path = content::ChildProcessHost::GetChildPath(
           content::ChildProcessHost::CHILD_NORMAL);
       CHECK_EQ(program, child_path)
@@ -1434,7 +1441,17 @@ bool ElectronBrowserClient::WillInterceptWebSocket(
   if (!web_request.get())
     return false;
 
-  return web_request->HasListener();
+  bool has_listener = web_request->HasListener();
+#if BUILDFLAG(ENABLE_ELECTRON_EXTENSIONS)
+  const auto* web_request_api =
+      extensions::BrowserContextKeyedAPIFactory<extensions::WebRequestAPI>::Get(
+          browser_context);
+
+  if (web_request_api)
+    has_listener |= web_request_api->MayHaveProxies();
+#endif
+
+  return has_listener;
 }
 
 void ElectronBrowserClient::CreateWebSocket(
@@ -1448,8 +1465,24 @@ void ElectronBrowserClient::CreateWebSocket(
   v8::Isolate* isolate = v8::Isolate::GetCurrent();
   v8::HandleScope scope(isolate);
   auto* browser_context = frame->GetProcess()->GetBrowserContext();
+
   auto web_request = api::WebRequest::FromOrCreate(isolate, browser_context);
   DCHECK(web_request.get());
+
+#if BUILDFLAG(ENABLE_ELECTRON_EXTENSIONS)
+  if (!web_request->HasListener()) {
+    auto* web_request_api = extensions::BrowserContextKeyedAPIFactory<
+        extensions::WebRequestAPI>::Get(browser_context);
+
+    if (web_request_api && web_request_api->MayHaveProxies()) {
+      web_request_api->ProxyWebSocket(frame, std::move(factory), url,
+                                      site_for_cookies.RepresentativeUrl(),
+                                      user_agent, std::move(handshake_client));
+      return;
+    }
+  }
+#endif
+
   ProxyingWebSocket::StartProxying(
       web_request.get(), std::move(factory), url,
       site_for_cookies.RepresentativeUrl(), user_agent,
@@ -1476,6 +1509,24 @@ bool ElectronBrowserClient::WillCreateURLLoaderFactory(
   auto web_request = api::WebRequest::FromOrCreate(isolate, browser_context);
   DCHECK(web_request.get());
 
+#if BUILDFLAG(ENABLE_ELECTRON_EXTENSIONS)
+  if (!web_request->HasListener()) {
+    auto* web_request_api = extensions::BrowserContextKeyedAPIFactory<
+        extensions::WebRequestAPI>::Get(browser_context);
+
+    DCHECK(web_request_api);
+    bool use_proxy_for_web_request =
+        web_request_api->MaybeProxyURLLoaderFactory(
+            browser_context, frame_host, render_process_id, type, navigation_id,
+            factory_receiver, header_client);
+
+    if (bypass_redirect_checks)
+      *bypass_redirect_checks = use_proxy_for_web_request;
+    if (use_proxy_for_web_request)
+      return true;
+  }
+#endif
+
   auto proxied_receiver = std::move(*factory_receiver);
   mojo::PendingRemote<network::mojom::URLLoaderFactory> target_factory_remote;
   *factory_receiver = target_factory_remote.InitWithNewPipeAndPassReceiver();
@@ -1516,15 +1567,11 @@ void ElectronBrowserClient::OverrideURLLoaderFactoryParams(
     const url::Origin& origin,
     bool is_for_isolated_world,
     network::mojom::URLLoaderFactoryParams* factory_params) {
-  for (const auto& iter : process_preferences_) {
-    if (iter.second.browser_context != browser_context)
-      continue;
-
-    if (!iter.second.web_security) {
-      // bypass CORB
-      factory_params->process_id = iter.first;
-      factory_params->is_corb_enabled = false;
-    }
+  // Bypass CORB and CORS when web security is disabled.
+  auto it = process_preferences_.find(factory_params->process_id);
+  if (it != process_preferences_.end() && !it->second.web_security) {
+    factory_params->is_corb_enabled = false;
+    factory_params->disable_web_security = true;
   }
 
   extensions::URLLoaderFactoryManager::OverrideURLLoaderFactoryParams(
@@ -1588,6 +1635,12 @@ void ElectronBrowserClient::BindHostReceiverForRenderer(
 #endif
 }
 
+void BindBadgeManagerFrameReceiver(
+    content::RenderFrameHost* frame,
+    mojo::PendingReceiver<blink::mojom::BadgeService> receiver) {
+  LOG(WARNING) << "The Chromium Badging API is not available in Electron";
+}
+
 #if BUILDFLAG(ENABLE_ELECTRON_EXTENSIONS)
 void BindMimeHandlerService(
     content::RenderFrameHost* frame_host,
@@ -1624,6 +1677,8 @@ void ElectronBrowserClient::RegisterBrowserInterfaceBindersForFrame(
     mojo::BinderMapWithContext<content::RenderFrameHost*>* map) {
   map->Add<network_hints::mojom::NetworkHintsHandler>(
       base::BindRepeating(&BindNetworkHintsHandler));
+  map->Add<blink::mojom::BadgeService>(
+      base::BindRepeating(&BindBadgeManagerFrameReceiver));
 #if BUILDFLAG(ENABLE_ELECTRON_EXTENSIONS)
   map->Add<extensions::mime_handler::MimeHandlerService>(
       base::BindRepeating(&BindMimeHandlerService));
diff --git a/shell/browser/electron_browser_context.cc b/shell/browser/electron_browser_context.cc
index b09bdbf266f9d..5a222963aed73 100644
--- a/shell/browser/electron_browser_context.cc
+++ b/shell/browser/electron_browser_context.cc
@@ -227,7 +227,7 @@ void ElectronBrowserContext::InitPrefs() {
   auto* current_dictionaries =
       prefs()->Get(spellcheck::prefs::kSpellCheckDictionaries);
   // No configured dictionaries, the default will be en-US
-  if (current_dictionaries->GetList().size() == 0) {
+  if (current_dictionaries->GetList().empty()) {
     std::string default_code = spellcheck::GetCorrespondingSpellCheckLanguage(
         base::i18n::GetConfiguredLocale());
     if (!default_code.empty()) {
diff --git a/shell/browser/electron_browser_main_parts.cc b/shell/browser/electron_browser_main_parts.cc
index 635d3c0701331..3d1f559888797 100644
--- a/shell/browser/electron_browser_main_parts.cc
+++ b/shell/browser/electron_browser_main_parts.cc
@@ -8,13 +8,10 @@
 
 #include <utility>
 
-#if defined(OS_LINUX)
-#include <glib.h>  // for g_setenv()
-#endif
-
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/feature_list.h"
+#include "base/optional.h"
 #include "base/path_service.h"
 #include "base/run_loop.h"
 #include "base/strings/string_number_conversions.h"
@@ -23,6 +20,7 @@
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/child_process_security_policy.h"
 #include "content/public/browser/device_service.h"
+#include "content/public/browser/download_manager.h"
 #include "content/public/browser/web_ui_controller_factory.h"
 #include "content/public/common/content_features.h"
 #include "content/public/common/content_switches.h"
@@ -51,6 +49,7 @@
 #include "shell/common/node_bindings.h"
 #include "shell/common/node_includes.h"
 #include "ui/base/idle/idle.h"
+#include "ui/base/l10n/l10n_util.h"
 #include "ui/base/ui_base_switches.h"
 
 #if defined(USE_AURA)
@@ -79,7 +78,6 @@
 
 #if defined(OS_WIN)
 #include "ui/base/cursor/cursor_loader_win.h"
-#include "ui/base/l10n/l10n_util.h"
 #include "ui/base/l10n/l10n_util_win.h"
 #include "ui/display/win/dpi.h"
 #include "ui/gfx/system_fonts_win.h"
@@ -359,9 +357,47 @@ int ElectronBrowserMainParts::PreCreateThreads() {
   if (!views::LayoutProvider::Get())
     layout_provider_ = std::make_unique<views::LayoutProvider>();
 
+  auto* command_line = base::CommandLine::ForCurrentProcess();
+  std::string locale = command_line->GetSwitchValueASCII(::switches::kLang);
+
+#if defined(OS_MAC)
+  // The browser process only wants to support the language Cocoa will use,
+  // so force the app locale to be overridden with that value. This must
+  // happen before the ResourceBundle is loaded
+  if (locale.empty())
+    l10n_util::OverrideLocaleWithCocoaLocale();
+#elif defined(OS_LINUX)
+  // l10n_util::GetApplicationLocaleInternal uses g_get_language_names(),
+  // which keys off of getenv("LC_ALL").
+  // We must set this env first to make ui::ResourceBundle accept the custom
+  // locale.
+  std::unique_ptr<base::Environment> env(base::Environment::Create());
+  base::Optional<std::string> lc_all;
+  if (!locale.empty()) {
+    std::string str;
+    if (env->GetVar("LC_ALL", &str))
+      lc_all.emplace(std::move(str));
+    env->SetVar("LC_ALL", locale.c_str());
+  }
+#endif
+
+  // Load resources bundle according to locale.
+  std::string loaded_locale = LoadResourceBundle(locale);
+
   // Initialize the app locale.
-  fake_browser_process_->SetApplicationLocale(
-      ElectronBrowserClient::Get()->GetApplicationLocale());
+  std::string app_locale = l10n_util::GetApplicationLocale(loaded_locale);
+  ElectronBrowserClient::SetApplicationLocale(app_locale);
+  fake_browser_process_->SetApplicationLocale(app_locale);
+
+#if defined(OS_LINUX)
+  // Reset to the original LC_ALL since we should not be changing it.
+  if (!locale.empty()) {
+    if (lc_all)
+      env->SetVar("LC_ALL", *lc_all);
+    else
+      env->UnSetVar("LC_ALL");
+  }
+#endif
 
   // Force MediaCaptureDevicesDispatcher to be created on UI thread.
   MediaCaptureDevicesDispatcher::GetInstance();
@@ -469,11 +505,6 @@ void ElectronBrowserMainParts::PreMainMessageLoopRun() {
   ui::TouchFactory::SetTouchDeviceListFromCommandLine();
 #endif
 
-  // Start idle gc.
-  gc_timer_.Start(FROM_HERE, base::TimeDelta::FromMinutes(1),
-                  base::BindRepeating(&v8::Isolate::LowMemoryNotification,
-                                      base::Unretained(js_env_->isolate())));
-
   content::WebUIControllerFactory::RegisterFactory(
       ElectronWebUIControllerFactory::GetInstance());
 
@@ -534,6 +565,16 @@ void ElectronBrowserMainParts::PostMainMessageLoopRun() {
   FreeAppDelegate();
 #endif
 
+  // Shutdown the DownloadManager before destroying Node to prevent
+  // DownloadItem callbacks from crashing.
+  for (auto& iter : ElectronBrowserContext::browser_context_map()) {
+    auto* download_manager =
+        content::BrowserContext::GetDownloadManager(iter.second.get());
+    if (download_manager) {
+      download_manager->Shutdown();
+    }
+  }
+
   // Make sure destruction callbacks are called before message loop is
   // destroyed, otherwise some objects that need to be deleted on IO thread
   // won't be freed.
@@ -551,6 +592,7 @@ void ElectronBrowserMainParts::PostMainMessageLoopRun() {
   node_debugger_->Stop();
   node_env_->env()->set_trace_sync_io(false);
   js_env_->OnMessageLoopDestroying();
+  node::Stop(node_env_->env());
   node_env_.reset();
 
   ElectronBrowserContext::browser_context_map().clear();
diff --git a/shell/browser/electron_browser_main_parts.h b/shell/browser/electron_browser_main_parts.h
index 446e3e1c2474a..52e3677da8be3 100644
--- a/shell/browser/electron_browser_main_parts.h
+++ b/shell/browser/electron_browser_main_parts.h
@@ -160,8 +160,6 @@ class ElectronBrowserMainParts : public content::BrowserMainParts {
   std::unique_ptr<ElectronExtensionsBrowserClient> extensions_browser_client_;
 #endif
 
-  base::RepeatingTimer gc_timer_;
-
   // List of callbacks should be executed before destroying JS env.
   std::list<base::OnceClosure> destructors_;
 
diff --git a/shell/browser/electron_download_manager_delegate.cc b/shell/browser/electron_download_manager_delegate.cc
index bd54688404963..0b10309b69dc3 100644
--- a/shell/browser/electron_download_manager_delegate.cc
+++ b/shell/browser/electron_download_manager_delegate.cc
@@ -36,15 +36,27 @@ base::FilePath CreateDownloadPath(const GURL& url,
                                   const std::string& content_disposition,
                                   const std::string& suggested_filename,
                                   const std::string& mime_type,
+                                  const base::FilePath& last_saved_directory,
                                   const base::FilePath& default_download_path) {
   auto generated_name =
       net::GenerateFileName(url, content_disposition, std::string(),
                             suggested_filename, mime_type, "download");
 
-  if (!base::PathExists(default_download_path))
-    base::CreateDirectory(default_download_path);
+  base::FilePath download_path;
 
-  return default_download_path.Append(generated_name);
+  // If the last saved directory is a non-empty existent path, use it as the
+  // default.
+  if (last_saved_directory.empty() || !base::PathExists(last_saved_directory)) {
+    download_path = default_download_path;
+
+    if (!base::PathExists(download_path))
+      base::CreateDirectory(download_path);
+  } else {
+    // Otherwise use the global default.
+    download_path = last_saved_directory;
+  }
+
+  return download_path.Append(generated_name);
 }
 
 }  // namespace
@@ -106,7 +118,7 @@ void ElectronDownloadManagerDelegate::OnDownloadPathGenerated(
 
     if (!settings.parent_window)
       settings.parent_window = window;
-    if (settings.title.size() == 0)
+    if (settings.title.empty())
       settings.title = item->GetURL().spec();
     if (settings.default_path.empty())
       settings.default_path = default_path;
@@ -152,11 +164,7 @@ void ElectronDownloadManagerDelegate::OnDownloadSaveDialogDone(
   if (!canceled) {
     if (result.Get("filePath", &path)) {
       // Remember the last selected download directory.
-      ElectronBrowserContext* browser_context =
-          static_cast<ElectronBrowserContext*>(
-              download_manager_->GetBrowserContext());
-      browser_context->prefs()->SetFilePath(prefs::kDownloadDefaultDirectory,
-                                            path.DirName());
+      last_saved_directory_ = path.DirName();
 
       api::DownloadItem* download = api::DownloadItem::FromDownloadItem(item);
       if (download)
@@ -210,9 +218,8 @@ bool ElectronDownloadManagerDelegate::DetermineDownloadTarget(
     return true;
   }
 
-  ElectronBrowserContext* browser_context =
-      static_cast<ElectronBrowserContext*>(
-          download_manager_->GetBrowserContext());
+  auto* browser_context = static_cast<ElectronBrowserContext*>(
+      download_manager_->GetBrowserContext());
   base::FilePath default_download_path =
       browser_context->prefs()->GetFilePath(prefs::kDownloadDefaultDirectory);
 
@@ -223,7 +230,7 @@ bool ElectronDownloadManagerDelegate::DetermineDownloadTarget(
       base::BindOnce(&CreateDownloadPath, download->GetURL(),
                      download->GetContentDisposition(),
                      download->GetSuggestedFilename(), download->GetMimeType(),
-                     default_download_path),
+                     last_saved_directory_, default_download_path),
       base::BindOnce(&ElectronDownloadManagerDelegate::OnDownloadPathGenerated,
                      weak_ptr_factory_.GetWeakPtr(), download->GetId(),
                      std::move(*callback)));
diff --git a/shell/browser/electron_download_manager_delegate.h b/shell/browser/electron_download_manager_delegate.h
index fb0c7e58f2248..c727371610bea 100644
--- a/shell/browser/electron_download_manager_delegate.h
+++ b/shell/browser/electron_download_manager_delegate.h
@@ -52,6 +52,8 @@ class ElectronDownloadManagerDelegate
       content::DownloadTargetCallback download_callback,
       gin_helper::Dictionary result);
 
+  base::FilePath last_saved_directory_;
+
   content::DownloadManager* download_manager_;
   base::WeakPtrFactory<ElectronDownloadManagerDelegate> weak_ptr_factory_;
 
diff --git a/shell/browser/electron_permission_manager.cc b/shell/browser/electron_permission_manager.cc
index c06828be6c36e..b5545829e9d05 100644
--- a/shell/browser/electron_permission_manager.cc
+++ b/shell/browser/electron_permission_manager.cc
@@ -227,16 +227,17 @@ blink::mojom::PermissionStatus ElectronPermissionManager::GetPermissionStatus(
   return blink::mojom::PermissionStatus::GRANTED;
 }
 
-int ElectronPermissionManager::SubscribePermissionStatusChange(
+ElectronPermissionManager::SubscriptionId
+ElectronPermissionManager::SubscribePermissionStatusChange(
     content::PermissionType permission,
     content::RenderFrameHost* render_frame_host,
     const GURL& requesting_origin,
     base::RepeatingCallback<void(blink::mojom::PermissionStatus)> callback) {
-  return -1;
+  return SubscriptionId();
 }
 
 void ElectronPermissionManager::UnsubscribePermissionStatusChange(
-    int subscription_id) {}
+    SubscriptionId subscription_id) {}
 
 bool ElectronPermissionManager::CheckPermissionWithDetails(
     content::PermissionType permission,
diff --git a/shell/browser/electron_permission_manager.h b/shell/browser/electron_permission_manager.h
index a347afd8375e7..97aade1b5dc49 100644
--- a/shell/browser/electron_permission_manager.h
+++ b/shell/browser/electron_permission_manager.h
@@ -90,13 +90,14 @@ class ElectronPermissionManager : public content::PermissionControllerDelegate {
       content::PermissionType permission,
       const GURL& requesting_origin,
       const GURL& embedding_origin) override;
-  int SubscribePermissionStatusChange(
+  SubscriptionId SubscribePermissionStatusChange(
       content::PermissionType permission,
       content::RenderFrameHost* render_frame_host,
       const GURL& requesting_origin,
       base::RepeatingCallback<void(blink::mojom::PermissionStatus)> callback)
       override;
-  void UnsubscribePermissionStatusChange(int subscription_id) override;
+  void UnsubscribePermissionStatusChange(
+      SubscriptionId subscription_id) override;
 
  private:
   class PendingRequest;
diff --git a/shell/browser/extended_web_contents_observer.h b/shell/browser/extended_web_contents_observer.h
new file mode 100644
index 0000000000000..3914789eaf7c0
--- /dev/null
+++ b/shell/browser/extended_web_contents_observer.h
@@ -0,0 +1,36 @@
+// Copyright (c) 2020 Microsoft, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef SHELL_BROWSER_EXTENDED_WEB_CONTENTS_OBSERVER_H_
+#define SHELL_BROWSER_EXTENDED_WEB_CONTENTS_OBSERVER_H_
+
+#include <vector>
+
+#include "base/observer_list.h"
+#include "base/strings/string16.h"
+#include "electron/shell/common/api/api.mojom.h"
+#include "ui/gfx/geometry/rect.h"
+
+namespace electron {
+
+// Certain events are only in WebContentsDelegate, so we provide our own
+// Observer to dispatch those events.
+class ExtendedWebContentsObserver : public base::CheckedObserver {
+ public:
+  virtual void OnCloseContents() {}
+  virtual void OnDraggableRegionsUpdated(
+      const std::vector<mojom::DraggableRegionPtr>& regions) {}
+  virtual void OnSetContentBounds(const gfx::Rect& rect) {}
+  virtual void OnActivateContents() {}
+  virtual void OnPageTitleUpdated(const base::string16& title,
+                                  bool explicit_set) {}
+  virtual void OnDevToolsResized() {}
+
+ protected:
+  ~ExtendedWebContentsObserver() override {}
+};
+
+}  // namespace electron
+
+#endif  // SHELL_BROWSER_EXTENDED_WEB_CONTENTS_OBSERVER_H_
diff --git a/shell/browser/extensions/api/i18n/i18n_api.cc b/shell/browser/extensions/api/i18n/i18n_api.cc
index 217a02e8d05d5..c1140d70b188c 100644
--- a/shell/browser/extensions/api/i18n/i18n_api.cc
+++ b/shell/browser/extensions/api/i18n/i18n_api.cc
@@ -1,24 +1,24 @@
-// Copyright (c) 2020 Samuel Maddock <sam@samuelmaddock.com>.
-// Use of this source code is governed by the MIT license that can be
-// found in the LICENSE file.
-
-#include "shell/browser/extensions/api/i18n/i18n_api.h"
-
-#include <string>
-#include <vector>
-
-#include "chrome/browser/browser_process.h"
-#include "shell/common/extensions/api/i18n.h"
-
-namespace GetAcceptLanguages = extensions::api::i18n::GetAcceptLanguages;
-
-namespace extensions {
-
-ExtensionFunction::ResponseAction I18nGetAcceptLanguagesFunction::Run() {
-  auto locale = g_browser_process->GetApplicationLocale();
-  std::vector<std::string> accept_languages = {locale};
-  return RespondNow(
-      ArgumentList(GetAcceptLanguages::Results::Create(accept_languages)));
-}
-
-}  // namespace extensions
+// Copyright (c) 2020 Samuel Maddock <sam@samuelmaddock.com>.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "shell/browser/extensions/api/i18n/i18n_api.h"
+
+#include <string>
+#include <vector>
+
+#include "chrome/browser/browser_process.h"
+#include "shell/common/extensions/api/i18n.h"
+
+namespace GetAcceptLanguages = extensions::api::i18n::GetAcceptLanguages;
+
+namespace extensions {
+
+ExtensionFunction::ResponseAction I18nGetAcceptLanguagesFunction::Run() {
+  auto locale = g_browser_process->GetApplicationLocale();
+  std::vector<std::string> accept_languages = {locale};
+  return RespondNow(
+      ArgumentList(GetAcceptLanguages::Results::Create(accept_languages)));
+}
+
+}  // namespace extensions
diff --git a/shell/browser/extensions/api/i18n/i18n_api.h b/shell/browser/extensions/api/i18n/i18n_api.h
index d93ffffb82beb..20374516ea437 100644
--- a/shell/browser/extensions/api/i18n/i18n_api.h
+++ b/shell/browser/extensions/api/i18n/i18n_api.h
@@ -1,20 +1,20 @@
-// Copyright (c) 2020 Samuel Maddock <sam@samuelmaddock.com>.
-// Use of this source code is governed by the MIT license that can be
-// found in the LICENSE file.
-
-#ifndef SHELL_BROWSER_EXTENSIONS_API_I18N_I18N_API_H_
-#define SHELL_BROWSER_EXTENSIONS_API_I18N_I18N_API_H_
-
-#include "extensions/browser/extension_function.h"
-
-namespace extensions {
-
-class I18nGetAcceptLanguagesFunction : public ExtensionFunction {
-  ~I18nGetAcceptLanguagesFunction() override {}
-  ResponseAction Run() override;
-  DECLARE_EXTENSION_FUNCTION("i18n.getAcceptLanguages", I18N_GETACCEPTLANGUAGES)
-};
-
-}  // namespace extensions
-
-#endif  // SHELL_BROWSER_EXTENSIONS_API_I18N_I18N_API_H_
+// Copyright (c) 2020 Samuel Maddock <sam@samuelmaddock.com>.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef SHELL_BROWSER_EXTENSIONS_API_I18N_I18N_API_H_
+#define SHELL_BROWSER_EXTENSIONS_API_I18N_I18N_API_H_
+
+#include "extensions/browser/extension_function.h"
+
+namespace extensions {
+
+class I18nGetAcceptLanguagesFunction : public ExtensionFunction {
+  ~I18nGetAcceptLanguagesFunction() override {}
+  ResponseAction Run() override;
+  DECLARE_EXTENSION_FUNCTION("i18n.getAcceptLanguages", I18N_GETACCEPTLANGUAGES)
+};
+
+}  // namespace extensions
+
+#endif  // SHELL_BROWSER_EXTENSIONS_API_I18N_I18N_API_H_
diff --git a/shell/browser/extensions/api/management/electron_management_api_delegate.cc b/shell/browser/extensions/api/management/electron_management_api_delegate.cc
new file mode 100644
index 0000000000000..19e0cd9c84c8d
--- /dev/null
+++ b/shell/browser/extensions/api/management/electron_management_api_delegate.cc
@@ -0,0 +1,235 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// TODO(sentialx): emit relevant events in Electron's session?
+#include "shell/browser/extensions/api/management/electron_management_api_delegate.h"
+
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "base/bind.h"
+#include "base/macros.h"
+#include "base/strings/strcat.h"
+#include "base/strings/utf_string_conversions.h"
+#include "base/task/post_task.h"
+#include "chrome/common/extensions/extension_metrics.h"
+#include "chrome/common/extensions/manifest_handlers/app_launch_info.h"
+#include "chrome/common/web_application_info.h"
+#include "chrome/common/webui_url_constants.h"
+#include "content/public/browser/browser_context.h"
+#include "content/public/browser/web_contents.h"
+#include "extensions/browser/api/management/management_api.h"
+#include "extensions/browser/api/management/management_api_constants.h"
+#include "extensions/browser/disable_reason.h"
+#include "extensions/browser/extension_prefs.h"
+#include "extensions/browser/extension_registry.h"
+#include "extensions/browser/extension_system.h"
+#include "extensions/common/api/management.h"
+#include "extensions/common/extension.h"
+#include "services/data_decoder/public/cpp/data_decoder.h"
+#include "third_party/blink/public/mojom/manifest/display_mode.mojom.h"
+
+namespace {
+class ManagementSetEnabledFunctionInstallPromptDelegate
+    : public extensions::InstallPromptDelegate {
+ public:
+  ManagementSetEnabledFunctionInstallPromptDelegate(
+      content::WebContents* web_contents,
+      content::BrowserContext* browser_context,
+      const extensions::Extension* extension,
+      const base::Callback<void(bool)>& callback) {
+    // TODO(sentialx): emit event
+  }
+  ~ManagementSetEnabledFunctionInstallPromptDelegate() override {}
+
+ private:
+  base::WeakPtrFactory<ManagementSetEnabledFunctionInstallPromptDelegate>
+      weak_factory_{this};
+
+  DISALLOW_COPY_AND_ASSIGN(ManagementSetEnabledFunctionInstallPromptDelegate);
+};
+
+class ManagementUninstallFunctionUninstallDialogDelegate
+    : public extensions::UninstallDialogDelegate {
+ public:
+  ManagementUninstallFunctionUninstallDialogDelegate(
+      extensions::ManagementUninstallFunctionBase* function,
+      const extensions::Extension* target_extension,
+      bool show_programmatic_uninstall_ui) {
+    // TODO(sentialx): emit event
+  }
+
+  ~ManagementUninstallFunctionUninstallDialogDelegate() override {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ManagementUninstallFunctionUninstallDialogDelegate);
+};
+
+}  // namespace
+
+ElectronManagementAPIDelegate::ElectronManagementAPIDelegate() {}
+
+ElectronManagementAPIDelegate::~ElectronManagementAPIDelegate() {}
+
+void ElectronManagementAPIDelegate::LaunchAppFunctionDelegate(
+    const extensions::Extension* extension,
+    content::BrowserContext* context) const {
+  // TODO(sentialx): emit event
+  extensions::RecordAppLaunchType(extension_misc::APP_LAUNCH_EXTENSION_API,
+                                  extension->GetType());
+}
+
+GURL ElectronManagementAPIDelegate::GetFullLaunchURL(
+    const extensions::Extension* extension) const {
+  return extensions::AppLaunchInfo::GetFullLaunchURL(extension);
+}
+
+extensions::LaunchType ElectronManagementAPIDelegate::GetLaunchType(
+    const extensions::ExtensionPrefs* prefs,
+    const extensions::Extension* extension) const {
+  // TODO(sentialx)
+  return extensions::LAUNCH_TYPE_DEFAULT;
+}
+
+void ElectronManagementAPIDelegate::
+    GetPermissionWarningsByManifestFunctionDelegate(
+        extensions::ManagementGetPermissionWarningsByManifestFunction* function,
+        const std::string& manifest_str) const {
+  data_decoder::DataDecoder::ParseJsonIsolated(
+      manifest_str,
+      base::BindOnce(
+          &extensions::ManagementGetPermissionWarningsByManifestFunction::
+              OnParse,
+          function));
+}
+
+std::unique_ptr<extensions::InstallPromptDelegate>
+ElectronManagementAPIDelegate::SetEnabledFunctionDelegate(
+    content::WebContents* web_contents,
+    content::BrowserContext* browser_context,
+    const extensions::Extension* extension,
+    const base::Callback<void(bool)>& callback) const {
+  return std::unique_ptr<ManagementSetEnabledFunctionInstallPromptDelegate>(
+      new ManagementSetEnabledFunctionInstallPromptDelegate(
+          web_contents, browser_context, extension, callback));
+}
+
+std::unique_ptr<extensions::UninstallDialogDelegate>
+ElectronManagementAPIDelegate::UninstallFunctionDelegate(
+    extensions::ManagementUninstallFunctionBase* function,
+    const extensions::Extension* target_extension,
+    bool show_programmatic_uninstall_ui) const {
+  return std::unique_ptr<extensions::UninstallDialogDelegate>(
+      new ManagementUninstallFunctionUninstallDialogDelegate(
+          function, target_extension, show_programmatic_uninstall_ui));
+}
+
+bool ElectronManagementAPIDelegate::CreateAppShortcutFunctionDelegate(
+    extensions::ManagementCreateAppShortcutFunction* function,
+    const extensions::Extension* extension,
+    std::string* error) const {
+  return false;  // TODO(sentialx): route event and return true
+}
+
+std::unique_ptr<extensions::AppForLinkDelegate>
+ElectronManagementAPIDelegate::GenerateAppForLinkFunctionDelegate(
+    extensions::ManagementGenerateAppForLinkFunction* function,
+    content::BrowserContext* context,
+    const std::string& title,
+    const GURL& launch_url) const {
+  // TODO(sentialx)
+  return nullptr;
+}
+
+bool ElectronManagementAPIDelegate::CanContextInstallWebApps(
+    content::BrowserContext* context) const {
+  // TODO(sentialx)
+  return false;
+}
+
+void ElectronManagementAPIDelegate::InstallOrLaunchReplacementWebApp(
+    content::BrowserContext* context,
+    const GURL& web_app_url,
+    InstallOrLaunchWebAppCallback callback) const {
+  // TODO(sentialx)
+}
+
+bool ElectronManagementAPIDelegate::CanContextInstallAndroidApps(
+    content::BrowserContext* context) const {
+  return false;
+}
+
+void ElectronManagementAPIDelegate::CheckAndroidAppInstallStatus(
+    const std::string& package_name,
+    AndroidAppInstallStatusCallback callback) const {
+  std::move(callback).Run(false);
+}
+
+void ElectronManagementAPIDelegate::InstallReplacementAndroidApp(
+    const std::string& package_name,
+    InstallAndroidAppCallback callback) const {
+  std::move(callback).Run(false);
+}
+
+void ElectronManagementAPIDelegate::EnableExtension(
+    content::BrowserContext* context,
+    const std::string& extension_id) const {
+  // const extensions::Extension* extension =
+  //     extensions::ExtensionRegistry::Get(context)->GetExtensionById(
+  //         extension_id, extensions::ExtensionRegistry::EVERYTHING);
+
+  // TODO(sentialx): we don't have ExtensionService
+  // If the extension was disabled for a permissions increase, the Management
+  // API will have displayed a re-enable prompt to the user, so we know it's
+  // safe to grant permissions here.
+  // extensions::ExtensionSystem::Get(context)
+  //     ->extension_service()
+  //     ->GrantPermissionsAndEnableExtension(extension);
+}
+
+void ElectronManagementAPIDelegate::DisableExtension(
+    content::BrowserContext* context,
+    const extensions::Extension* source_extension,
+    const std::string& extension_id,
+    extensions::disable_reason::DisableReason disable_reason) const {
+  // TODO(sentialx): we don't have ExtensionService
+  // extensions::ExtensionSystem::Get(context)
+  //     ->extension_service()
+  //     ->DisableExtensionWithSource(source_extension, extension_id,
+  //                                  disable_reason);
+}
+
+bool ElectronManagementAPIDelegate::UninstallExtension(
+    content::BrowserContext* context,
+    const std::string& transient_extension_id,
+    extensions::UninstallReason reason,
+    base::string16* error) const {
+  // TODO(sentialx): we don't have ExtensionService
+  // return extensions::ExtensionSystem::Get(context)
+  //     ->extension_service()
+  //     ->UninstallExtension(transient_extension_id, reason, error);
+  return false;
+}
+
+void ElectronManagementAPIDelegate::SetLaunchType(
+    content::BrowserContext* context,
+    const std::string& extension_id,
+    extensions::LaunchType launch_type) const {
+  // TODO(sentialx)
+  // extensions::SetLaunchType(context, extension_id, launch_type);
+}
+
+GURL ElectronManagementAPIDelegate::GetIconURL(
+    const extensions::Extension* extension,
+    int icon_size,
+    ExtensionIconSet::MatchType match,
+    bool grayscale) const {
+  GURL icon_url(base::StringPrintf("%s%s/%d/%d%s",
+                                   chrome::kChromeUIExtensionIconURL,
+                                   extension->id().c_str(), icon_size, match,
+                                   grayscale ? "?grayscale=true" : ""));
+  CHECK(icon_url.is_valid());
+  return icon_url;
+}
diff --git a/shell/browser/extensions/api/management/electron_management_api_delegate.h b/shell/browser/extensions/api/management/electron_management_api_delegate.h
new file mode 100644
index 0000000000000..4c985debeed83
--- /dev/null
+++ b/shell/browser/extensions/api/management/electron_management_api_delegate.h
@@ -0,0 +1,86 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SHELL_BROWSER_EXTENSIONS_API_MANAGEMENT_ELECTRON_MANAGEMENT_API_DELEGATE_H_
+#define SHELL_BROWSER_EXTENSIONS_API_MANAGEMENT_ELECTRON_MANAGEMENT_API_DELEGATE_H_
+
+#include <memory>
+#include <string>
+
+#include "base/task/cancelable_task_tracker.h"
+#include "extensions/browser/api/management/management_api_delegate.h"
+
+class ElectronManagementAPIDelegate : public extensions::ManagementAPIDelegate {
+ public:
+  ElectronManagementAPIDelegate();
+  ~ElectronManagementAPIDelegate() override;
+
+  // ManagementAPIDelegate.
+  void LaunchAppFunctionDelegate(
+      const extensions::Extension* extension,
+      content::BrowserContext* context) const override;
+  GURL GetFullLaunchURL(const extensions::Extension* extension) const override;
+  extensions::LaunchType GetLaunchType(
+      const extensions::ExtensionPrefs* prefs,
+      const extensions::Extension* extension) const override;
+  void GetPermissionWarningsByManifestFunctionDelegate(
+      extensions::ManagementGetPermissionWarningsByManifestFunction* function,
+      const std::string& manifest_str) const override;
+  std::unique_ptr<extensions::InstallPromptDelegate> SetEnabledFunctionDelegate(
+      content::WebContents* web_contents,
+      content::BrowserContext* browser_context,
+      const extensions::Extension* extension,
+      const base::Callback<void(bool)>& callback) const override;
+  std::unique_ptr<extensions::UninstallDialogDelegate>
+  UninstallFunctionDelegate(
+      extensions::ManagementUninstallFunctionBase* function,
+      const extensions::Extension* target_extension,
+      bool show_programmatic_uninstall_ui) const override;
+  bool CreateAppShortcutFunctionDelegate(
+      extensions::ManagementCreateAppShortcutFunction* function,
+      const extensions::Extension* extension,
+      std::string* error) const override;
+  std::unique_ptr<extensions::AppForLinkDelegate>
+  GenerateAppForLinkFunctionDelegate(
+      extensions::ManagementGenerateAppForLinkFunction* function,
+      content::BrowserContext* context,
+      const std::string& title,
+      const GURL& launch_url) const override;
+  bool CanContextInstallWebApps(
+      content::BrowserContext* context) const override;
+  void InstallOrLaunchReplacementWebApp(
+      content::BrowserContext* context,
+      const GURL& web_app_url,
+      ManagementAPIDelegate::InstallOrLaunchWebAppCallback callback)
+      const override;
+  bool CanContextInstallAndroidApps(
+      content::BrowserContext* context) const override;
+  void CheckAndroidAppInstallStatus(
+      const std::string& package_name,
+      ManagementAPIDelegate::AndroidAppInstallStatusCallback callback)
+      const override;
+  void InstallReplacementAndroidApp(
+      const std::string& package_name,
+      ManagementAPIDelegate::InstallAndroidAppCallback callback) const override;
+  void EnableExtension(content::BrowserContext* context,
+                       const std::string& extension_id) const override;
+  void DisableExtension(
+      content::BrowserContext* context,
+      const extensions::Extension* source_extension,
+      const std::string& extension_id,
+      extensions::disable_reason::DisableReason disable_reason) const override;
+  bool UninstallExtension(content::BrowserContext* context,
+                          const std::string& transient_extension_id,
+                          extensions::UninstallReason reason,
+                          base::string16* error) const override;
+  void SetLaunchType(content::BrowserContext* context,
+                     const std::string& extension_id,
+                     extensions::LaunchType launch_type) const override;
+  GURL GetIconURL(const extensions::Extension* extension,
+                  int icon_size,
+                  ExtensionIconSet::MatchType match,
+                  bool grayscale) const override;
+};
+
+#endif  // SHELL_BROWSER_EXTENSIONS_API_MANAGEMENT_ELECTRON_MANAGEMENT_API_DELEGATE_H_
diff --git a/shell/browser/extensions/electron_component_extension_resource_manager.cc b/shell/browser/extensions/electron_component_extension_resource_manager.cc
index d09c0add1478e..1248010788211 100644
--- a/shell/browser/extensions/electron_component_extension_resource_manager.cc
+++ b/shell/browser/extensions/electron_component_extension_resource_manager.cc
@@ -17,7 +17,7 @@
 #include "electron/buildflags/buildflags.h"
 
 #if BUILDFLAG(ENABLE_PDF_VIEWER)
-#include "chrome/browser/pdf/pdf_extension_util.h"
+#include "chrome/browser/pdf/pdf_extension_util.h"  // nogncheck
 #include "extensions/common/constants.h"
 #endif
 namespace extensions {
diff --git a/shell/browser/extensions/electron_extension_loader.cc b/shell/browser/extensions/electron_extension_loader.cc
index b9b8294abc303..4ddacb3309280 100644
--- a/shell/browser/extensions/electron_extension_loader.cc
+++ b/shell/browser/extensions/electron_extension_loader.cc
@@ -12,12 +12,15 @@
 #include "base/files/file_util.h"
 #include "base/logging.h"
 #include "base/sequenced_task_runner.h"
+#include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/task_runner_util.h"
 #include "base/threading/thread_restrictions.h"
+#include "base/time/time.h"
 #include "extensions/browser/extension_file_task_runner.h"
 #include "extensions/browser/extension_prefs.h"
 #include "extensions/browser/extension_registry.h"
+#include "extensions/browser/pref_names.h"
 #include "extensions/common/file_util.h"
 
 namespace extensions {
@@ -109,7 +112,24 @@ void ElectronExtensionLoader::FinishExtensionLoad(
   scoped_refptr<const Extension> extension = result.first;
   if (extension) {
     extension_registrar_.AddExtension(extension);
+
+    // Write extension install time to ExtensionPrefs. This is required by
+    // WebRequestAPI which calls extensions::ExtensionPrefs::GetInstallTime.
+    //
+    // Implementation for writing the pref was based on
+    // PreferenceAPIBase::SetExtensionControlledPref.
+    {
+      ExtensionPrefs* extension_prefs = ExtensionPrefs::Get(browser_context_);
+      ExtensionPrefs::ScopedDictionaryUpdate update(
+          extension_prefs, extension.get()->id(),
+          extensions::pref_names::kPrefPreferences);
+      auto preference = update.Create();
+      const base::Time install_time = base::Time().Now();
+      preference->SetString(
+          "install_time", base::NumberToString(install_time.ToInternalValue()));
+    }
   }
+
   std::move(cb).Run(extension.get(), result.second);
 }
 
diff --git a/shell/browser/extensions/electron_extension_system.cc b/shell/browser/extensions/electron_extension_system.cc
index 7e51adfd4118f..259451b7c37f4 100755
--- a/shell/browser/extensions/electron_extension_system.cc
+++ b/shell/browser/extensions/electron_extension_system.cc
@@ -25,6 +25,7 @@
 #include "extensions/browser/api/app_runtime/app_runtime_api.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/info_map.h"
+#include "extensions/browser/management_policy.h"
 #include "extensions/browser/notification_types.h"
 #include "extensions/browser/null_app_sorting.h"
 #include "extensions/browser/quota_service.h"
@@ -37,7 +38,7 @@
 #include "shell/browser/extensions/electron_extension_loader.h"
 
 #if BUILDFLAG(ENABLE_PDF_VIEWER)
-#include "chrome/browser/pdf/pdf_extension_util.h"
+#include "chrome/browser/pdf/pdf_extension_util.h"  // nogncheck
 #endif
 
 using content::BrowserContext;
@@ -91,6 +92,8 @@ void ElectronExtensionSystem::InitForRegularProfile(bool extensions_enabled) {
 
   if (!browser_context_->IsOffTheRecord())
     LoadComponentExtensions();
+
+  management_policy_.reset(new ManagementPolicy);
 }
 
 std::unique_ptr<base::DictionaryValue> ParseManifest(
@@ -130,7 +133,7 @@ RuntimeData* ElectronExtensionSystem::runtime_data() {
 }
 
 ManagementPolicy* ElectronExtensionSystem::management_policy() {
-  return nullptr;
+  return management_policy_.get();
 }
 
 ServiceWorkerManager* ElectronExtensionSystem::service_worker_manager() {
diff --git a/shell/browser/extensions/electron_extension_system.h b/shell/browser/extensions/electron_extension_system.h
index ea5e07b84330b..e1f0d767be191 100755
--- a/shell/browser/extensions/electron_extension_system.h
+++ b/shell/browser/extensions/electron_extension_system.h
@@ -104,6 +104,7 @@ class ElectronExtensionSystem : public ExtensionSystem {
   std::unique_ptr<QuotaService> quota_service_;
   std::unique_ptr<SharedUserScriptManager> shared_user_script_manager_;
   std::unique_ptr<AppSorting> app_sorting_;
+  std::unique_ptr<ManagementPolicy> management_policy_;
 
   std::unique_ptr<ElectronExtensionLoader> extension_loader_;
 
diff --git a/shell/browser/extensions/electron_extensions_api_client.cc b/shell/browser/extensions/electron_extensions_api_client.cc
index 5da08766e7e99..9a74b5a6add06 100644
--- a/shell/browser/extensions/electron_extensions_api_client.cc
+++ b/shell/browser/extensions/electron_extensions_api_client.cc
@@ -7,13 +7,21 @@
 #include <memory>
 #include <string>
 
+#include "electron/buildflags/buildflags.h"
 #include "extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest_delegate.h"
 #include "printing/buildflags/buildflags.h"
+#include "shell/browser/extensions/api/management/electron_management_api_delegate.h"
 #include "shell/browser/extensions/electron_extension_web_contents_observer.h"
 #include "shell/browser/extensions/electron_messaging_delegate.h"
 
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
-#include "components/pdf/browser/pdf_web_contents_helper.h"
+#if BUILDFLAG(ENABLE_PRINTING)
+#include "chrome/browser/printing/print_view_manager_basic.h"
+#include "components/printing/browser/print_manager_utils.h"
+#include "shell/browser/printing/print_preview_message_handler.h"
+#endif
+
+#if BUILDFLAG(ENABLE_PDF_VIEWER)
+#include "components/pdf/browser/pdf_web_contents_helper.h"  // nogncheck
 #include "shell/browser/electron_pdf_web_contents_helper_client.h"
 #endif
 
@@ -50,13 +58,23 @@ MessagingDelegate* ElectronExtensionsAPIClient::GetMessagingDelegate() {
 
 void ElectronExtensionsAPIClient::AttachWebContentsHelpers(
     content::WebContents* web_contents) const {
-  extensions::ElectronExtensionWebContentsObserver::CreateForWebContents(
-      web_contents);
+#if BUILDFLAG(ENABLE_PRINTING)
+  electron::PrintPreviewMessageHandler::CreateForWebContents(web_contents);
+  printing::PrintViewManagerBasic::CreateForWebContents(web_contents);
+#endif
 
-#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
+#if BUILDFLAG(ENABLE_PDF_VIEWER)
   pdf::PDFWebContentsHelper::CreateForWebContentsWithClient(
       web_contents, std::make_unique<ElectronPDFWebContentsHelperClient>());
 #endif
+
+  extensions::ElectronExtensionWebContentsObserver::CreateForWebContents(
+      web_contents);
+}
+
+ManagementAPIDelegate*
+ElectronExtensionsAPIClient::CreateManagementAPIDelegate() const {
+  return new ElectronManagementAPIDelegate;
 }
 
 std::unique_ptr<MimeHandlerViewGuestDelegate>
diff --git a/shell/browser/extensions/electron_extensions_api_client.h b/shell/browser/extensions/electron_extensions_api_client.h
index 1747d7e982668..03d07d8453bb0 100644
--- a/shell/browser/extensions/electron_extensions_api_client.h
+++ b/shell/browser/extensions/electron_extensions_api_client.h
@@ -25,6 +25,7 @@ class ElectronExtensionsAPIClient : public ExtensionsAPIClient {
   std::unique_ptr<MimeHandlerViewGuestDelegate>
   CreateMimeHandlerViewGuestDelegate(
       MimeHandlerViewGuest* guest) const override;
+  ManagementAPIDelegate* CreateManagementAPIDelegate() const override;
 
  private:
   std::unique_ptr<ElectronMessagingDelegate> messaging_delegate_;
diff --git a/shell/browser/extensions/electron_extensions_browser_client.h b/shell/browser/extensions/electron_extensions_browser_client.h
index b0ffecf13b92e..a4379f03db37d 100644
--- a/shell/browser/extensions/electron_extensions_browser_client.h
+++ b/shell/browser/extensions/electron_extensions_browser_client.h
@@ -32,8 +32,6 @@ namespace electron {
 
 // An ExtensionsBrowserClient that supports a single content::BrowserContext
 // with no related incognito context.
-// Must be initialized via InitWithBrowserContext() once the BrowserContext is
-// created.
 class ElectronExtensionsBrowserClient
     : public extensions::ExtensionsBrowserClient {
  public:
@@ -122,11 +120,6 @@ class ElectronExtensionsBrowserClient
       content::RenderFrameHost* render_frame_host,
       const extensions::Extension* extension) const override;
 
-  // |context| is the single BrowserContext used for IsValidContext().
-  // |pref_service| is used for GetPrefServiceForContext().
-  void InitWithBrowserContext(content::BrowserContext* context,
-                              PrefService* pref_service);
-
   // Sets the API client.
   void SetAPIClientForTest(extensions::ExtensionsAPIClient* api_client);
 
diff --git a/shell/browser/file_select_helper.cc b/shell/browser/file_select_helper.cc
new file mode 100644
index 0000000000000..dbd98da2a7a96
--- /dev/null
+++ b/shell/browser/file_select_helper.cc
@@ -0,0 +1,270 @@
+// Copyright (c) 2020 Microsoft, Inc. All rights reserved.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include <memory>
+
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "shell/browser/file_select_helper.h"
+
+#include "base/bind.h"
+#include "base/files/file_enumerator.h"
+#include "base/files/file_util.h"
+#include "base/strings/utf_string_conversions.h"
+#include "chrome/common/pref_names.h"
+#include "components/prefs/pref_service.h"
+#include "shell/browser/electron_browser_context.h"
+#include "shell/browser/javascript_environment.h"
+#include "shell/browser/ui/file_dialog.h"
+#include "shell/common/gin_converters/callback_converter.h"
+#include "shell/common/gin_converters/file_path_converter.h"
+
+using blink::mojom::FileChooserFileInfo;
+using blink::mojom::FileChooserFileInfoPtr;
+using blink::mojom::FileChooserParams;
+using blink::mojom::NativeFileInfo;
+
+namespace {
+void DeleteFiles(std::vector<base::FilePath> paths) {
+  for (auto& file_path : paths)
+    base::DeleteFile(file_path);
+}
+}  // namespace
+
+FileSelectHelper::FileSelectHelper(
+    content::RenderFrameHost* render_frame_host,
+    std::unique_ptr<content::FileSelectListener> listener,
+    FileChooserParams::Mode mode)
+    : render_frame_host_(render_frame_host),
+      listener_(std::move(listener)),
+      mode_(mode) {
+  DCHECK(render_frame_host_);
+  DCHECK(listener_);
+
+  web_contents_ = content::WebContents::FromRenderFrameHost(render_frame_host);
+  DCHECK(web_contents_);
+
+  content::WebContentsObserver::Observe(web_contents_);
+  observer_.Add(render_frame_host_->GetRenderViewHost()->GetWidget());
+}
+
+FileSelectHelper::~FileSelectHelper() = default;
+
+void FileSelectHelper::ShowOpenDialog(
+    const file_dialog::DialogSettings& settings) {
+  v8::Isolate* isolate = electron::JavascriptEnvironment::GetIsolate();
+  v8::HandleScope scope(isolate);
+  gin_helper::Promise<gin_helper::Dictionary> promise(isolate);
+
+  auto callback = base::BindOnce(&FileSelectHelper::OnOpenDialogDone,
+                                 weak_ptr_factory_.GetWeakPtr());
+  ignore_result(promise.Then(std::move(callback)));
+
+  file_dialog::ShowOpenDialog(settings, std::move(promise));
+}
+
+void FileSelectHelper::ShowSaveDialog(
+    const file_dialog::DialogSettings& settings) {
+  v8::Isolate* isolate = electron::JavascriptEnvironment::GetIsolate();
+  v8::HandleScope scope(isolate);
+  gin_helper::Promise<gin_helper::Dictionary> promise(isolate);
+
+  auto callback = base::BindOnce(&FileSelectHelper::OnSaveDialogDone,
+                                 weak_ptr_factory_.GetWeakPtr());
+  ignore_result(promise.Then(std::move(callback)));
+
+  file_dialog::ShowSaveDialog(settings, std::move(promise));
+}
+
+// net::DirectoryLister::DirectoryListerDelegate
+void FileSelectHelper::OnListFile(
+    const net::DirectoryLister::DirectoryListerData& data) {
+  if (!render_frame_host_ || !web_contents_) {
+    // If the frame or webcontents was destroyed under us. We
+    // must notify |listener_| and release our reference to
+    // ourself. RunFileChooserEnd() performs this.
+    RunFileChooserEnd();
+    return;
+  }
+  // We don't want to return directory paths, only file paths
+  if (data.info.IsDirectory())
+    return;
+
+  lister_paths_.push_back(data.path);
+}
+
+void FileSelectHelper::RunFileChooserEnd() {
+  // If there are temporary files, then this instance needs to stick around
+  // until web_contents_ is destroyed, so that this instance can delete the
+  // temporary files.
+  if (!temporary_files_.empty())
+    return;
+
+  if (listener_)
+    listener_->FileSelectionCanceled();
+
+  render_frame_host_ = nullptr;
+  web_contents_ = nullptr;
+
+  delete this;
+}
+
+// net::DirectoryLister::DirectoryListerDelegate
+void FileSelectHelper::OnListDone(int error) {
+  if (!render_frame_host_ || !web_contents_) {
+    // If the frame or webcontents was destroyed under us. We
+    // must notify |listener_| and release our reference to
+    // ourself. RunFileChooserEnd() performs this.
+    RunFileChooserEnd();
+    return;
+  }
+
+  std::vector<FileChooserFileInfoPtr> file_info;
+  for (const auto& path : lister_paths_)
+    file_info.push_back(FileChooserFileInfo::NewNativeFile(
+        NativeFileInfo::New(path, base::string16())));
+
+  OnFilesSelected(std::move(file_info), lister_base_dir_);
+}
+
+void FileSelectHelper::DeleteTemporaryFiles() {
+  base::ThreadPool::PostTask(
+      FROM_HERE,
+      {base::MayBlock(), base::TaskPriority::BEST_EFFORT,
+       base::TaskShutdownBehavior::BLOCK_SHUTDOWN},
+      base::BindOnce(&DeleteFiles, std::move(temporary_files_)));
+}
+
+void FileSelectHelper::EnumerateDirectory() {
+  // Ensure that this fn is only called once
+  DCHECK(!lister_);
+  DCHECK(!lister_base_dir_.empty());
+  DCHECK(lister_paths_.empty());
+
+  lister_ = std::make_unique<net::DirectoryLister>(
+      lister_base_dir_, net::DirectoryLister::NO_SORT_RECURSIVE, this);
+  lister_->Start();
+}
+
+void FileSelectHelper::OnOpenDialogDone(gin_helper::Dictionary result) {
+  bool canceled = true;
+  result.Get("canceled", &canceled);
+
+  if (!render_frame_host_ || canceled) {
+    RunFileChooserEnd();
+  } else {
+    std::vector<base::FilePath> paths;
+    if (result.Get("filePaths", &paths)) {
+      std::vector<ui::SelectedFileInfo> files =
+          ui::FilePathListToSelectedFileInfoList(paths);
+      // If we are uploading a folder we need to enumerate its contents
+      if (mode_ == FileChooserParams::Mode::kUploadFolder &&
+          paths.size() >= 1) {
+        lister_base_dir_ = paths[0];
+        EnumerateDirectory();
+      } else {
+#if defined(OS_MACOSX)
+        base::ThreadPool::PostTask(
+            FROM_HERE,
+            {base::MayBlock(),
+             base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN},
+            base::BindOnce(&FileSelectHelper::ProcessSelectedFilesMac,
+                           base::Unretained(this), files));
+#else
+        ConvertToFileChooserFileInfoList(files);
+#endif
+      }
+
+      if (render_frame_host_ && !paths.empty()) {
+        auto* browser_context = static_cast<electron::ElectronBrowserContext*>(
+            render_frame_host_->GetProcess()->GetBrowserContext());
+        browser_context->prefs()->SetFilePath(prefs::kSelectFileLastDirectory,
+                                              paths[0].DirName());
+      }
+    }
+  }
+}
+
+void FileSelectHelper::ConvertToFileChooserFileInfoList(
+    const std::vector<ui::SelectedFileInfo>& files) {
+  std::vector<FileChooserFileInfoPtr> file_info;
+
+  for (const auto& file : files) {
+    file_info.push_back(FileChooserFileInfo::NewNativeFile(NativeFileInfo::New(
+        file.local_path, base::FilePath(file.display_name).AsUTF16Unsafe())));
+  }
+
+  OnFilesSelected(std::move(file_info), lister_base_dir_);
+}
+
+void FileSelectHelper::OnSaveDialogDone(gin_helper::Dictionary result) {
+  std::vector<FileChooserFileInfoPtr> file_info;
+  bool canceled = true;
+  result.Get("canceled", &canceled);
+
+  if (!render_frame_host_ || canceled) {
+    RunFileChooserEnd();
+  } else {
+    base::FilePath path;
+    if (result.Get("filePath", &path)) {
+      file_info.push_back(FileChooserFileInfo::NewNativeFile(
+          NativeFileInfo::New(path, path.BaseName().AsUTF16Unsafe())));
+    }
+    // We should only call this if we have not cancelled the dialog.
+    OnFilesSelected(std::move(file_info), base::FilePath());
+  }
+}
+
+void FileSelectHelper::OnFilesSelected(
+    std::vector<FileChooserFileInfoPtr> file_info,
+    base::FilePath base_dir) {
+  if (listener_) {
+    listener_->FileSelected(std::move(file_info), base_dir, mode_);
+    listener_.reset();
+  }
+
+  render_frame_host_ = nullptr;
+
+  delete this;
+}
+
+void FileSelectHelper::RenderWidgetHostDestroyed(
+    content::RenderWidgetHost* widget_host) {
+  render_frame_host_ = nullptr;
+  observer_.Remove(widget_host);
+}
+
+// content::WebContentsObserver:
+void FileSelectHelper::RenderFrameHostChanged(
+    content::RenderFrameHost* old_host,
+    content::RenderFrameHost* new_host) {
+  if (!render_frame_host_)
+    return;
+  // The |old_host| and its children are now pending deletion. Do not give
+  // them file access past this point.
+  if (render_frame_host_ == old_host ||
+      render_frame_host_->IsDescendantOf(old_host)) {
+    render_frame_host_ = nullptr;
+  }
+}
+
+// content::WebContentsObserver:
+void FileSelectHelper::RenderFrameDeleted(
+    content::RenderFrameHost* deleted_host) {
+  if (deleted_host == render_frame_host_)
+    render_frame_host_ = nullptr;
+}
+
+// content::WebContentsObserver:
+void FileSelectHelper::WebContentsDestroyed() {
+  render_frame_host_ = nullptr;
+  web_contents_ = nullptr;
+
+  DeleteTemporaryFiles();
+
+  if (!lister_)
+    delete this;
+}
diff --git a/shell/browser/file_select_helper.h b/shell/browser/file_select_helper.h
new file mode 100644
index 0000000000000..15ca4ed9bc67d
--- /dev/null
+++ b/shell/browser/file_select_helper.h
@@ -0,0 +1,118 @@
+// Copyright (c) 2020 Microsoft, Inc. All rights reserved.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef SHELL_BROWSER_FILE_SELECT_HELPER_H_
+#define SHELL_BROWSER_FILE_SELECT_HELPER_H_
+
+#include <memory>
+
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "base/files/file_path.h"
+#include "chrome/common/pref_names.h"
+#include "content/public/browser/file_select_listener.h"
+#include "content/public/browser/render_frame_host.h"
+#include "content/public/browser/render_process_host.h"
+#include "content/public/browser/render_view_host.h"
+#include "content/public/browser/render_widget_host.h"
+#include "content/public/browser/render_widget_host_observer.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_observer.h"
+#include "gin/dictionary.h"
+#include "net/base/directory_lister.h"
+#include "shell/browser/electron_browser_context.h"
+#include "shell/browser/ui/file_dialog.h"
+#include "shell/common/gin_helper/dictionary.h"
+#include "ui/shell_dialogs/selected_file_info.h"
+
+using blink::mojom::FileChooserParams;
+
+class FileSelectHelper : public content::WebContentsObserver,
+                         public content::RenderWidgetHostObserver,
+                         public net::DirectoryLister::DirectoryListerDelegate {
+ public:
+  FileSelectHelper(content::RenderFrameHost* render_frame_host,
+                   std::unique_ptr<content::FileSelectListener> listener,
+                   FileChooserParams::Mode mode);
+  ~FileSelectHelper() override;
+
+  // WebDialogHelper::RunFileChooser
+
+  void ShowOpenDialog(const file_dialog::DialogSettings& settings);
+
+  void ShowSaveDialog(const file_dialog::DialogSettings& settings);
+
+ private:
+  // net::DirectoryLister::DirectoryListerDelegate overrides.
+  void OnListFile(
+      const net::DirectoryLister::DirectoryListerData& data) override;
+  void OnListDone(int error) override;
+
+  void DeleteTemporaryFiles();
+
+  void EnumerateDirectory();
+
+  void OnOpenDialogDone(gin_helper::Dictionary result);
+  void OnSaveDialogDone(gin_helper::Dictionary result);
+
+  void OnFilesSelected(
+      std::vector<blink::mojom::FileChooserFileInfoPtr> file_info,
+      base::FilePath base_dir);
+
+  void RunFileChooserEnd();
+
+  void ConvertToFileChooserFileInfoList(
+      const std::vector<ui::SelectedFileInfo>& files);
+
+#if defined(OS_MACOSX)
+  // Must be called from a MayBlock() task. Each selected file that is a package
+  // will be zipped, and the zip will be passed to the render view host in place
+  // of the package.
+  void ProcessSelectedFilesMac(const std::vector<ui::SelectedFileInfo>& files);
+
+  // Saves the paths of |zipped_files| for later deletion. Passes |files| to the
+  // render view host.
+  void ProcessSelectedFilesMacOnUIThread(
+      const std::vector<ui::SelectedFileInfo>& files,
+      const std::vector<base::FilePath>& zipped_files);
+
+  // Zips the package at |path| into a temporary destination. Returns the
+  // temporary destination, if the zip was successful. Otherwise returns an
+  // empty path.
+  static base::FilePath ZipPackage(const base::FilePath& path);
+#endif  // defined(OS_MAC)
+
+  // content::RenderWidgetHostObserver:
+  void RenderWidgetHostDestroyed(
+      content::RenderWidgetHost* widget_host) override;
+
+  // content::WebContentsObserver:
+  void RenderFrameHostChanged(content::RenderFrameHost* old_host,
+                              content::RenderFrameHost* new_host) override;
+  void RenderFrameDeleted(content::RenderFrameHost* deleted_host) override;
+  void WebContentsDestroyed() override;
+
+  content::RenderFrameHost* render_frame_host_;
+  content::WebContents* web_contents_;
+  std::unique_ptr<content::FileSelectListener> listener_;
+  FileChooserParams::Mode mode_;
+
+  ScopedObserver<content::RenderWidgetHost, content::RenderWidgetHostObserver>
+      observer_{this};
+
+  // Temporary files only used on OSX. This class is responsible for deleting
+  // these files when they are no longer needed.
+  std::vector<base::FilePath> temporary_files_;
+
+  // DirectoryLister-specific members
+  std::unique_ptr<net::DirectoryLister> lister_;
+  base::FilePath lister_base_dir_;
+  std::vector<base::FilePath> lister_paths_;
+
+  base::WeakPtrFactory<FileSelectHelper> weak_ptr_factory_{this};
+};
+
+#endif  // SHELL_BROWSER_FILE_SELECT_HELPER_H_
diff --git a/shell/browser/file_select_helper_mac.mm b/shell/browser/file_select_helper_mac.mm
new file mode 100644
index 0000000000000..55dc03525a45f
--- /dev/null
+++ b/shell/browser/file_select_helper_mac.mm
@@ -0,0 +1,146 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "shell/browser/file_select_helper.h"
+
+#include <Cocoa/Cocoa.h>
+#include <sys/stat.h>
+
+#include <vector>
+
+#include "base/bind.h"
+#include "base/files/file.h"
+#include "base/files/file_path.h"
+#include "base/files/file_util.h"
+#include "base/mac/foundation_util.h"
+#include "content/public/browser/browser_task_traits.h"
+#include "content/public/browser/browser_thread.h"
+#include "third_party/zlib/google/zip.h"
+#include "ui/shell_dialogs/selected_file_info.h"
+
+namespace {
+
+// Given the |path| of a package, returns the destination that the package
+// should be zipped to. Returns an empty path on any errors.
+base::FilePath ZipDestination(const base::FilePath& path) {
+  base::FilePath dest;
+
+  if (!base::GetTempDir(&dest)) {
+    // Couldn't get the temporary directory.
+    return base::FilePath();
+  }
+
+  // TMPDIR/<bundleID>/zip_cache/<guid>
+
+  NSString* bundleID = [[NSBundle mainBundle] bundleIdentifier];
+  dest = dest.Append([bundleID fileSystemRepresentation]);
+
+  dest = dest.Append("zip_cache");
+
+  NSString* guid = [[NSProcessInfo processInfo] globallyUniqueString];
+  dest = dest.Append([guid fileSystemRepresentation]);
+
+  return dest;
+}
+
+// Returns the path of the package and its components relative to the package's
+// parent directory.
+std::vector<base::FilePath> RelativePathsForPackage(
+    const base::FilePath& package) {
+  // Get the base directory.
+  base::FilePath base_dir = package.DirName();
+
+  // Add the package as the first relative path.
+  std::vector<base::FilePath> relative_paths;
+  relative_paths.push_back(package.BaseName());
+
+  // Add the components of the package as relative paths.
+  base::FileEnumerator file_enumerator(
+      package, true /* recursive */,
+      base::FileEnumerator::FILES | base::FileEnumerator::DIRECTORIES);
+  for (base::FilePath path = file_enumerator.Next(); !path.empty();
+       path = file_enumerator.Next()) {
+    base::FilePath relative_path;
+    bool success = base_dir.AppendRelativePath(path, &relative_path);
+    if (success)
+      relative_paths.push_back(relative_path);
+  }
+
+  return relative_paths;
+}
+
+}  // namespace
+
+base::FilePath FileSelectHelper::ZipPackage(const base::FilePath& path) {
+  base::FilePath dest(ZipDestination(path));
+  if (dest.empty())
+    return dest;
+
+  if (!base::CreateDirectory(dest.DirName()))
+    return base::FilePath();
+
+  base::File file(dest, base::File::FLAG_CREATE | base::File::FLAG_WRITE);
+  if (!file.IsValid())
+    return base::FilePath();
+
+  std::vector<base::FilePath> files_to_zip(RelativePathsForPackage(path));
+  base::FilePath base_dir = path.DirName();
+  bool success = zip::ZipFiles(base_dir, files_to_zip, file.GetPlatformFile());
+
+  int result = -1;
+  if (success)
+    result = fchmod(file.GetPlatformFile(), S_IRUSR);
+
+  return result >= 0 ? dest : base::FilePath();
+}
+
+void FileSelectHelper::ProcessSelectedFilesMac(
+    const std::vector<ui::SelectedFileInfo>& files) {
+  // Make a mutable copy of the input files.
+  std::vector<ui::SelectedFileInfo> files_out(files);
+  std::vector<base::FilePath> temporary_files;
+
+  for (auto& file_info : files_out) {
+    NSString* filename = base::mac::FilePathToNSString(file_info.local_path);
+    BOOL isPackage =
+        [[NSWorkspace sharedWorkspace] isFilePackageAtPath:filename];
+    if (isPackage && base::DirectoryExists(file_info.local_path)) {
+      base::FilePath result = ZipPackage(file_info.local_path);
+
+      if (!result.empty()) {
+        temporary_files.push_back(result);
+        file_info.local_path = result;
+        file_info.file_path = result;
+        file_info.display_name.append(".zip");
+      }
+    }
+  }
+
+  content::GetUIThreadTaskRunner({})->PostTask(
+      FROM_HERE,
+      base::BindOnce(&FileSelectHelper::ProcessSelectedFilesMacOnUIThread,
+                     base::Unretained(this), files_out, temporary_files));
+}
+
+void FileSelectHelper::ProcessSelectedFilesMacOnUIThread(
+    const std::vector<ui::SelectedFileInfo>& files,
+    const std::vector<base::FilePath>& temporary_files) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+
+  if (!temporary_files.empty()) {
+    temporary_files_.insert(temporary_files_.end(), temporary_files.begin(),
+                            temporary_files.end());
+
+    // Typically, |temporary_files| are deleted after |web_contents_| is
+    // destroyed. If |web_contents_| is already NULL, then the temporary files
+    // need to be deleted now.
+    if (!web_contents_) {
+      DeleteTemporaryFiles();
+      RunFileChooserEnd();
+      return;
+    }
+  }
+
+  ConvertToFileChooserFileInfoList(files);
+}
diff --git a/shell/browser/mac/electron_application.mm b/shell/browser/mac/electron_application.mm
index ac732190fdb80..e3c65c9eeeacb 100644
--- a/shell/browser/mac/electron_application.mm
+++ b/shell/browser/mac/electron_application.mm
@@ -177,36 +177,22 @@ - (void)handleURLEvent:(NSAppleEventDescriptor*)event
   electron::Browser::Get()->OpenURL(base::SysNSStringToUTF8(url));
 }
 
-- (bool)voiceOverEnabled {
-  NSUserDefaults* defaults = [NSUserDefaults standardUserDefaults];
-  [defaults addSuiteNamed:@"com.apple.universalaccess"];
-  [defaults synchronize];
-
-  return [defaults boolForKey:@"voiceOverOnOffKey"];
-}
-
 - (void)accessibilitySetValue:(id)value forAttribute:(NSString*)attribute {
-  // Undocumented attribute that VoiceOver happens to set while running.
-  // Chromium uses this too, even though it's not exactly right.
-  if ([attribute isEqualToString:@"AXEnhancedUserInterface"]) {
-    bool enableAccessibility = ([self voiceOverEnabled] && [value boolValue]);
-    [self updateAccessibilityEnabled:enableAccessibility];
-  } else if ([attribute isEqualToString:@"AXManualAccessibility"]) {
-    [self updateAccessibilityEnabled:[value boolValue]];
-  }
-  return [super accessibilitySetValue:value forAttribute:attribute];
-}
-
-- (void)updateAccessibilityEnabled:(BOOL)enabled {
-  auto* ax_state = content::BrowserAccessibilityState::GetInstance();
+  // Undocumented attribute that screen reader related functionality
+  // sets when running.
+  if ([attribute isEqualToString:@"AXEnhancedUserInterface"] ||
+      [attribute isEqualToString:@"AXManualAccessibility"]) {
+    auto* ax_state = content::BrowserAccessibilityState::GetInstance();
+    if ([value boolValue]) {
+      ax_state->OnScreenReaderDetected();
+    } else {
+      ax_state->DisableAccessibility();
+    }
 
-  if (enabled) {
-    ax_state->OnScreenReaderDetected();
-  } else {
-    ax_state->DisableAccessibility();
+    electron::Browser::Get()->OnAccessibilitySupportChanged();
   }
 
-  electron::Browser::Get()->OnAccessibilitySupportChanged();
+  return [super accessibilitySetValue:value forAttribute:attribute];
 }
 
 - (void)orderFrontStandardAboutPanel:(id)sender {
diff --git a/shell/browser/mac/electron_application_delegate.mm b/shell/browser/mac/electron_application_delegate.mm
index 73da6ec7c5153..df8ede7f33607 100644
--- a/shell/browser/mac/electron_application_delegate.mm
+++ b/shell/browser/mac/electron_application_delegate.mm
@@ -69,9 +69,9 @@ - (void)applicationWillFinishLaunching:(NSNotification*)notify {
 
 - (void)applicationDidFinishLaunching:(NSNotification*)notify {
   NSUserNotification* user_notification =
-      [notify userInfo][(id) @"NSApplicationLaunchUserNotificationKey"];
+      [notify userInfo][NSApplicationLaunchUserNotificationKey];
 
-  if (user_notification.userInfo) {
+  if ([user_notification isKindOfClass:[NSUserNotification class]]) {
     electron::Browser::Get()->DidFinishLaunching(
         electron::NSDictionaryToDictionaryValue(user_notification.userInfo));
   } else {
diff --git a/shell/browser/native_browser_view.cc b/shell/browser/native_browser_view.cc
index ff948e4839da8..b906308bb4088 100644
--- a/shell/browser/native_browser_view.cc
+++ b/shell/browser/native_browser_view.cc
@@ -13,16 +13,26 @@ namespace electron {
 
 NativeBrowserView::NativeBrowserView(
     InspectableWebContents* inspectable_web_contents)
-    : inspectable_web_contents_(inspectable_web_contents) {}
+    : inspectable_web_contents_(inspectable_web_contents) {
+  Observe(inspectable_web_contents_->GetWebContents());
+}
 
 NativeBrowserView::~NativeBrowserView() = default;
 
 InspectableWebContentsView* NativeBrowserView::GetInspectableWebContentsView() {
+  if (!inspectable_web_contents_)
+    return nullptr;
   return inspectable_web_contents_->GetView();
 }
 
 content::WebContents* NativeBrowserView::GetWebContents() {
+  if (!inspectable_web_contents_)
+    return nullptr;
   return inspectable_web_contents_->GetWebContents();
 }
 
+void NativeBrowserView::WebContentsDestroyed() {
+  inspectable_web_contents_ = nullptr;
+}
+
 }  // namespace electron
diff --git a/shell/browser/native_browser_view.h b/shell/browser/native_browser_view.h
index ac2dff293bbff..49d22deaa983a 100644
--- a/shell/browser/native_browser_view.h
+++ b/shell/browser/native_browser_view.h
@@ -9,6 +9,8 @@
 
 #include "base/macros.h"
 #include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_observer.h"
+#include "shell/common/api/api.mojom.h"
 #include "third_party/skia/include/core/SkColor.h"
 
 namespace gfx {
@@ -27,9 +29,9 @@ enum AutoResizeFlags {
 class InspectableWebContents;
 class InspectableWebContentsView;
 
-class NativeBrowserView {
+class NativeBrowserView : public content::WebContentsObserver {
  public:
-  virtual ~NativeBrowserView();
+  ~NativeBrowserView() override;
 
   static NativeBrowserView* Create(
       InspectableWebContents* inspectable_web_contents);
@@ -38,6 +40,10 @@ class NativeBrowserView {
     return inspectable_web_contents_;
   }
 
+  const std::vector<mojom::DraggableRegionPtr>& GetDraggableRegions() const {
+    return draggable_regions_;
+  }
+
   InspectableWebContentsView* GetInspectableWebContentsView();
   content::WebContents* GetWebContents();
 
@@ -46,14 +52,20 @@ class NativeBrowserView {
   virtual gfx::Rect GetBounds() = 0;
   virtual void SetBackgroundColor(SkColor color) = 0;
 
+  virtual void UpdateDraggableRegions(
+      const std::vector<gfx::Rect>& drag_exclude_rects) {}
+
   // Called when the window needs to update its draggable region.
   virtual void UpdateDraggableRegions(
-      const std::vector<gfx::Rect>& system_drag_exclude_areas) {}
+      const std::vector<mojom::DraggableRegionPtr>& regions) {}
 
  protected:
   explicit NativeBrowserView(InspectableWebContents* inspectable_web_contents);
+  // content::WebContentsObserver:
+  void WebContentsDestroyed() override;
 
   InspectableWebContents* inspectable_web_contents_;
+  std::vector<mojom::DraggableRegionPtr> draggable_regions_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(NativeBrowserView);
diff --git a/shell/browser/native_browser_view_mac.h b/shell/browser/native_browser_view_mac.h
index 7149952caf04c..b225409f65513 100644
--- a/shell/browser/native_browser_view_mac.h
+++ b/shell/browser/native_browser_view_mac.h
@@ -25,9 +25,11 @@ class NativeBrowserViewMac : public NativeBrowserView {
   void SetBackgroundColor(SkColor color) override;
 
   void UpdateDraggableRegions(
-      const std::vector<gfx::Rect>& system_drag_exclude_areas) override;
+      const std::vector<mojom::DraggableRegionPtr>& regions) override;
+
+  void UpdateDraggableRegions(
+      const std::vector<gfx::Rect>& drag_exclude_rects) override;
 
- private:
   DISALLOW_COPY_AND_ASSIGN(NativeBrowserViewMac);
 };
 
diff --git a/shell/browser/native_browser_view_mac.mm b/shell/browser/native_browser_view_mac.mm
index 4caca846213d2..1b7984f95fd45 100644
--- a/shell/browser/native_browser_view_mac.mm
+++ b/shell/browser/native_browser_view_mac.mm
@@ -4,8 +4,10 @@
 
 #include "shell/browser/native_browser_view_mac.h"
 
+#import <objc/runtime.h>
 #include <vector>
 
+#include "shell/browser/ui/drag_util.h"
 #include "shell/browser/ui/inspectable_web_contents.h"
 #include "shell/browser/ui/inspectable_web_contents_view.h"
 #include "skia/ext/skia_utils_mac.h"
@@ -29,14 +31,47 @@ @implementation DragRegionView
 
 @synthesize initialLocation;
 
++ (void)load {
+  if (getenv("ELECTRON_DEBUG_DRAG_REGIONS")) {
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+      SEL originalSelector = @selector(drawRect:);
+      SEL swizzledSelector = @selector(drawDebugRect:);
+
+      Method originalMethod =
+          class_getInstanceMethod([self class], originalSelector);
+      Method swizzledMethod =
+          class_getInstanceMethod([self class], swizzledSelector);
+      BOOL didAddMethod =
+          class_addMethod([self class], originalSelector,
+                          method_getImplementation(swizzledMethod),
+                          method_getTypeEncoding(swizzledMethod));
+
+      if (didAddMethod) {
+        class_replaceMethod([self class], swizzledSelector,
+                            method_getImplementation(originalMethod),
+                            method_getTypeEncoding(originalMethod));
+      } else {
+        method_exchangeImplementations(originalMethod, swizzledMethod);
+      }
+    });
+  }
+}
+
 - (BOOL)mouseDownCanMoveWindow {
   return NO;
 }
 
-- (NSView*)hitTest:(NSPoint)aPoint {
-  // Pass-through events that don't hit one of the exclusion zones
-  for (NSView* exlusion_zones in [self subviews]) {
-    if ([exlusion_zones hitTest:aPoint])
+- (BOOL)shouldIgnoreMouseEvent {
+  NSEventType type = [[NSApp currentEvent] type];
+  return type != NSEventTypeLeftMouseDragged &&
+         type != NSEventTypeLeftMouseDown;
+}
+
+- (NSView*)hitTest:(NSPoint)point {
+  // Pass-through events that hit one of the exclusion zones
+  for (NSView* exclusion_zones in [self subviews]) {
+    if ([exclusion_zones hitTest:point])
       return nil;
   }
 
@@ -44,6 +79,8 @@ - (NSView*)hitTest:(NSPoint)aPoint {
 }
 
 - (void)mouseDown:(NSEvent*)event {
+  [super mouseDown:event];
+
   if ([self.window respondsToSelector:@selector(performWindowDragWithEvent)]) {
     // According to Google, using performWindowDragWithEvent:
     // does not generate a NSWindowWillMoveNotification. Hence post one.
@@ -64,7 +101,7 @@ - (void)mouseDown:(NSEvent*)event {
   self.initialLocation = [event locationInWindow];
 }
 
-- (void)mouseDragged:(NSEvent*)theEvent {
+- (void)mouseDragged:(NSEvent*)event {
   if ([self.window respondsToSelector:@selector(performWindowDragWithEvent)]) {
     return;
   }
@@ -124,15 +161,11 @@ - (void)mouseDragged:(NSEvent*)theEvent {
   [self.window setFrameOrigin:newOrigin];
 }
 
-// Debugging tips:
-// Uncomment the following four lines to color DragRegionView bright red
-// #ifdef DEBUG_DRAG_REGIONS
-// - (void)drawRect:(NSRect)aRect
-// {
-//     [[NSColor redColor] set];
-//     NSRectFill([self bounds]);
-// }
-// #endif
+// For debugging purposes only.
+- (void)drawDebugRect:(NSRect)aRect {
+  [[[NSColor greenColor] colorWithAlphaComponent:0.5] set];
+  NSRectFill([self bounds]);
+}
 
 @end
 
@@ -141,19 +174,42 @@ @interface ExcludeDragRegionView : NSView
 
 @implementation ExcludeDragRegionView
 
++ (void)load {
+  if (getenv("ELECTRON_DEBUG_DRAG_REGIONS")) {
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+      SEL originalSelector = @selector(drawRect:);
+      SEL swizzledSelector = @selector(drawDebugRect:);
+
+      Method originalMethod =
+          class_getInstanceMethod([self class], originalSelector);
+      Method swizzledMethod =
+          class_getInstanceMethod([self class], swizzledSelector);
+      BOOL didAddMethod =
+          class_addMethod([self class], originalSelector,
+                          method_getImplementation(swizzledMethod),
+                          method_getTypeEncoding(swizzledMethod));
+
+      if (didAddMethod) {
+        class_replaceMethod([self class], swizzledSelector,
+                            method_getImplementation(originalMethod),
+                            method_getTypeEncoding(originalMethod));
+      } else {
+        method_exchangeImplementations(originalMethod, swizzledMethod);
+      }
+    });
+  }
+}
+
 - (BOOL)mouseDownCanMoveWindow {
   return NO;
 }
 
-// Debugging tips:
-// Uncomment the following four lines to color ExcludeDragRegionView bright red
-// #ifdef DEBUG_DRAG_REGIONS
-// - (void)drawRect:(NSRect)aRect
-// {
-//     [[NSColor greenColor] set];
-//     NSRectFill([self bounds]);
-// }
-// #endif
+// For debugging purposes only.
+- (void)drawDebugRect:(NSRect)aRect {
+  [[[NSColor redColor] colorWithAlphaComponent:0.5] set];
+  NSRectFill([self bounds]);
+}
 
 @end
 
@@ -162,8 +218,10 @@ - (BOOL)mouseDownCanMoveWindow {
 NativeBrowserViewMac::NativeBrowserViewMac(
     InspectableWebContents* inspectable_web_contents)
     : NativeBrowserView(inspectable_web_contents) {
-  auto* view =
-      GetInspectableWebContentsView()->GetNativeView().GetNativeNSView();
+  auto* iwc_view = GetInspectableWebContentsView();
+  if (!iwc_view)
+    return;
+  auto* view = iwc_view->GetNativeView().GetNativeNSView();
   view.autoresizingMask = kDefaultAutoResizingMask;
 }
 
@@ -186,24 +244,33 @@ - (BOOL)mouseDownCanMoveWindow {
         NSViewMaxYMargin | NSViewMinYMargin | NSViewHeightSizable;
   }
 
-  auto* view =
-      GetInspectableWebContentsView()->GetNativeView().GetNativeNSView();
+  auto* iwc_view = GetInspectableWebContentsView();
+  if (!iwc_view)
+    return;
+  auto* view = iwc_view->GetNativeView().GetNativeNSView();
   view.autoresizingMask = autoresizing_mask;
 }
 
 void NativeBrowserViewMac::SetBounds(const gfx::Rect& bounds) {
-  auto* view =
-      GetInspectableWebContentsView()->GetNativeView().GetNativeNSView();
+  auto* iwc_view = GetInspectableWebContentsView();
+  if (!iwc_view)
+    return;
+  auto* view = iwc_view->GetNativeView().GetNativeNSView();
   auto* superview = view.superview;
   const auto superview_height = superview ? superview.frame.size.height : 0;
   view.frame =
       NSMakeRect(bounds.x(), superview_height - bounds.y() - bounds.height(),
                  bounds.width(), bounds.height());
+
+  // Ensure draggable regions are properly updated to reflect new bounds.
+  UpdateDraggableRegions(draggable_regions_);
 }
 
 gfx::Rect NativeBrowserViewMac::GetBounds() {
-  NSView* view =
-      GetInspectableWebContentsView()->GetNativeView().GetNativeNSView();
+  auto* iwc_view = GetInspectableWebContentsView();
+  if (!iwc_view)
+    return gfx::Rect();
+  NSView* view = iwc_view->GetNativeView().GetNativeNSView();
   const int superview_height =
       (view.superview) ? view.superview.frame.size.height : 0;
   return gfx::Rect(
@@ -213,19 +280,25 @@ - (BOOL)mouseDownCanMoveWindow {
 }
 
 void NativeBrowserViewMac::SetBackgroundColor(SkColor color) {
-  auto* view =
-      GetInspectableWebContentsView()->GetNativeView().GetNativeNSView();
+  auto* iwc_view = GetInspectableWebContentsView();
+  if (!iwc_view)
+    return;
+  auto* view = iwc_view->GetNativeView().GetNativeNSView();
   view.wantsLayer = YES;
   view.layer.backgroundColor = skia::CGColorCreateFromSkColor(color);
 }
 
 void NativeBrowserViewMac::UpdateDraggableRegions(
     const std::vector<gfx::Rect>& drag_exclude_rects) {
+  if (!inspectable_web_contents_)
+    return;
+  auto* web_contents = inspectable_web_contents_->GetWebContents();
+  auto* iwc_view = GetInspectableWebContentsView();
+  if (!iwc_view || !web_contents)
+    return;
   NSView* web_view = GetWebContents()->GetNativeView().GetNativeNSView();
-  NSView* inspectable_view =
-      GetInspectableWebContentsView()->GetNativeView().GetNativeNSView();
+  NSView* inspectable_view = iwc_view->GetNativeView().GetNativeNSView();
   NSView* window_content_view = inspectable_view.superview;
-  const auto window_content_view_height = NSHeight(window_content_view.bounds);
 
   // Remove all DragRegionViews that were added last time. Note that we need
   // to copy the `subviews` array to avoid mutation during iteration.
@@ -241,14 +314,16 @@ - (BOOL)mouseDownCanMoveWindow {
       [[DragRegionView alloc] initWithFrame:web_view.bounds]);
   [web_view addSubview:drag_region_view];
 
-  // Then, on top of that, add "exclusion zones"
+  // Then, on top of that, add "exclusion zones".
+  auto const offset = GetBounds().OffsetFromOrigin();
+  const auto window_content_view_height = NSHeight(window_content_view.bounds);
   for (const auto& rect : drag_exclude_rects) {
-    const auto window_content_view_exclude_rect =
-        NSMakeRect(rect.x(), window_content_view_height - rect.bottom(),
-                   rect.width(), rect.height());
+    const auto x = rect.x() + offset.x();
+    const auto y = window_content_view_height - (rect.bottom() + offset.y());
+    const auto exclude_rect = NSMakeRect(x, y, rect.width(), rect.height());
+
     const auto drag_region_view_exclude_rect =
-        [window_content_view convertRect:window_content_view_exclude_rect
-                                  toView:drag_region_view];
+        [window_content_view convertRect:exclude_rect toView:drag_region_view];
 
     base::scoped_nsobject<NSView> exclude_drag_region_view(
         [[ExcludeDragRegionView alloc]
@@ -257,6 +332,35 @@ - (BOOL)mouseDownCanMoveWindow {
   }
 }
 
+void NativeBrowserViewMac::UpdateDraggableRegions(
+    const std::vector<mojom::DraggableRegionPtr>& regions) {
+  if (!inspectable_web_contents_)
+    return;
+  auto* web_contents = inspectable_web_contents_->GetWebContents();
+  NSView* web_view = web_contents->GetNativeView().GetNativeNSView();
+
+  NSInteger webViewWidth = NSWidth([web_view bounds]);
+  NSInteger webViewHeight = NSHeight([web_view bounds]);
+
+  // Draggable regions are implemented by having the whole web view draggable
+  // and overlaying regions that are not draggable.
+  if (&draggable_regions_ != &regions)
+    draggable_regions_ = mojo::Clone(regions);
+
+  std::vector<gfx::Rect> drag_exclude_rects;
+  if (draggable_regions_.empty()) {
+    const auto bounds = GetBounds();
+    drag_exclude_rects.emplace_back(bounds.x(), bounds.y(), webViewWidth,
+                                    webViewHeight);
+  } else {
+    drag_exclude_rects = CalculateNonDraggableRegions(
+        DraggableRegionsToSkRegion(draggable_regions_), webViewWidth,
+        webViewHeight);
+  }
+
+  UpdateDraggableRegions(drag_exclude_rects);
+}
+
 // static
 NativeBrowserView* NativeBrowserView::Create(
     InspectableWebContents* inspectable_web_contents) {
diff --git a/shell/browser/native_browser_view_views.cc b/shell/browser/native_browser_view_views.cc
index 8fead14c23054..d476309fe9ef0 100644
--- a/shell/browser/native_browser_view_views.cc
+++ b/shell/browser/native_browser_view_views.cc
@@ -4,6 +4,11 @@
 
 #include "shell/browser/native_browser_view_views.h"
 
+#include <memory>
+#include <utility>
+#include <vector>
+
+#include "shell/browser/ui/drag_util.h"
 #include "shell/browser/ui/inspectable_web_contents_view.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/views/background.h"
@@ -22,11 +27,32 @@ void NativeBrowserViewViews::SetAutoResizeFlags(uint8_t flags) {
   ResetAutoResizeProportions();
 }
 
+void NativeBrowserViewViews::UpdateDraggableRegions(
+    const std::vector<mojom::DraggableRegionPtr>& regions) {
+  // We need to snap the regions to the bounds of the current BrowserView.
+  // For example, if an attached BrowserView is draggable but its bounds are
+  // { x: 200,  y: 100, width: 300, height: 300 }
+  // then we need to add 200 to the x-value and 100 to the
+  // y-value of each of the passed regions or it will be incorrectly
+  // assumed that the regions begin in the top left corner as they
+  // would for the main client window.
+  auto const offset = GetBounds().OffsetFromOrigin();
+  auto snapped_regions = mojo::Clone(regions);
+  for (auto& snapped_region : snapped_regions) {
+    snapped_region->bounds.Offset(offset);
+  }
+
+  draggable_region_ = DraggableRegionsToSkRegion(snapped_regions);
+}
+
 void NativeBrowserViewViews::SetAutoResizeProportions(
     const gfx::Size& window_size) {
   if ((auto_resize_flags_ & AutoResizeFlags::kAutoResizeHorizontal) &&
       !auto_horizontal_proportion_set_) {
-    auto* view = GetInspectableWebContentsView()->GetView();
+    auto* iwc_view = GetInspectableWebContentsView();
+    if (!iwc_view)
+      return;
+    auto* view = iwc_view->GetView();
     auto view_bounds = view->bounds();
     auto_horizontal_proportion_width_ =
         static_cast<float>(window_size.width()) /
@@ -37,7 +63,10 @@ void NativeBrowserViewViews::SetAutoResizeProportions(
   }
   if ((auto_resize_flags_ & AutoResizeFlags::kAutoResizeVertical) &&
       !auto_vertical_proportion_set_) {
-    auto* view = GetInspectableWebContentsView()->GetView();
+    auto* iwc_view = GetInspectableWebContentsView();
+    if (!iwc_view)
+      return;
+    auto* view = iwc_view->GetView();
     auto view_bounds = view->bounds();
     auto_vertical_proportion_height_ =
         static_cast<float>(window_size.height()) /
@@ -51,7 +80,10 @@ void NativeBrowserViewViews::SetAutoResizeProportions(
 void NativeBrowserViewViews::AutoResize(const gfx::Rect& new_window,
                                         int width_delta,
                                         int height_delta) {
-  auto* view = GetInspectableWebContentsView()->GetView();
+  auto* iwc_view = GetInspectableWebContentsView();
+  if (!iwc_view)
+    return;
+  auto* view = iwc_view->GetView();
   const auto flags = GetAutoResizeFlags();
   if (!(flags & kAutoResizeWidth)) {
     width_delta = 0;
@@ -92,17 +124,26 @@ void NativeBrowserViewViews::ResetAutoResizeProportions() {
 }
 
 void NativeBrowserViewViews::SetBounds(const gfx::Rect& bounds) {
-  auto* view = GetInspectableWebContentsView()->GetView();
+  auto* iwc_view = GetInspectableWebContentsView();
+  if (!iwc_view)
+    return;
+  auto* view = iwc_view->GetView();
   view->SetBoundsRect(bounds);
   ResetAutoResizeProportions();
 }
 
 gfx::Rect NativeBrowserViewViews::GetBounds() {
-  return GetInspectableWebContentsView()->GetView()->bounds();
+  auto* iwc_view = GetInspectableWebContentsView();
+  if (!iwc_view)
+    return gfx::Rect();
+  return iwc_view->GetView()->bounds();
 }
 
 void NativeBrowserViewViews::SetBackgroundColor(SkColor color) {
-  auto* view = GetInspectableWebContentsView()->GetView();
+  auto* iwc_view = GetInspectableWebContentsView();
+  if (!iwc_view)
+    return;
+  auto* view = iwc_view->GetView();
   view->SetBackground(views::CreateSolidBackground(color));
   view->SchedulePaint();
 }
diff --git a/shell/browser/native_browser_view_views.h b/shell/browser/native_browser_view_views.h
index 35fdbcbbcafa0..ff69d4226f98b 100644
--- a/shell/browser/native_browser_view_views.h
+++ b/shell/browser/native_browser_view_views.h
@@ -5,7 +5,11 @@
 #ifndef SHELL_BROWSER_NATIVE_BROWSER_VIEW_VIEWS_H_
 #define SHELL_BROWSER_NATIVE_BROWSER_VIEW_VIEWS_H_
 
+#include <memory>
+#include <vector>
+
 #include "shell/browser/native_browser_view.h"
+#include "third_party/skia/include/core/SkRegion.h"
 
 namespace electron {
 
@@ -26,6 +30,10 @@ class NativeBrowserViewViews : public NativeBrowserView {
   void SetBounds(const gfx::Rect& bounds) override;
   gfx::Rect GetBounds() override;
   void SetBackgroundColor(SkColor color) override;
+  void UpdateDraggableRegions(
+      const std::vector<mojom::DraggableRegionPtr>& regions) override;
+
+  SkRegion* draggable_region() const { return draggable_region_.get(); }
 
  private:
   void ResetAutoResizeProportions();
@@ -40,6 +48,8 @@ class NativeBrowserViewViews : public NativeBrowserView {
   float auto_vertical_proportion_height_ = 0.;
   float auto_vertical_proportion_top_ = 0.;
 
+  std::unique_ptr<SkRegion> draggable_region_;
+
   DISALLOW_COPY_AND_ASSIGN(NativeBrowserViewViews);
 };
 
diff --git a/shell/browser/native_window.h b/shell/browser/native_window.h
index 63ad19de6ac20..037467b66a628 100644
--- a/shell/browser/native_window.h
+++ b/shell/browser/native_window.h
@@ -165,6 +165,7 @@ class NativeWindow : public base::SupportsUserData,
   virtual void SetParentWindow(NativeWindow* parent);
   virtual void AddBrowserView(NativeBrowserView* browser_view) = 0;
   virtual void RemoveBrowserView(NativeBrowserView* browser_view) = 0;
+  virtual void SetTopBrowserView(NativeBrowserView* browser_view) = 0;
   virtual content::DesktopMediaID GetDesktopMediaID() const = 0;
   virtual gfx::NativeView GetNativeView() const = 0;
   virtual gfx::NativeWindow GetNativeWindow() const = 0;
diff --git a/shell/browser/native_window_mac.h b/shell/browser/native_window_mac.h
index 20cb2f4295896..35171d557505a 100644
--- a/shell/browser/native_window_mac.h
+++ b/shell/browser/native_window_mac.h
@@ -32,6 +32,11 @@ class NativeWindowMac : public NativeWindow, public ui::NativeThemeObserver {
   NativeWindowMac(const gin_helper::Dictionary& options, NativeWindow* parent);
   ~NativeWindowMac() override;
 
+  // Cleanup observers when window is getting closed. Note that the destructor
+  // can be called much later after window gets closed, so we should not do
+  // cleanup in destructor.
+  void Cleanup();
+
   // NativeWindow:
   void SetContentView(views::View* view) override;
   void Close() override;
@@ -108,6 +113,7 @@ class NativeWindowMac : public NativeWindow, public ui::NativeThemeObserver {
   void SetFocusable(bool focusable) override;
   void AddBrowserView(NativeBrowserView* browser_view) override;
   void RemoveBrowserView(NativeBrowserView* browser_view) override;
+  void SetTopBrowserView(NativeBrowserView* browser_view) override;
   void SetParentWindow(NativeWindow* parent) override;
   content::DesktopMediaID GetDesktopMediaID() const override;
   gfx::NativeView GetNativeView() const override;
diff --git a/shell/browser/native_window_mac.mm b/shell/browser/native_window_mac.mm
index 6d30196840f1d..0d3959aa0061c 100644
--- a/shell/browser/native_window_mac.mm
+++ b/shell/browser/native_window_mac.mm
@@ -536,10 +536,12 @@ void ViewDidMoveToSuperview(NSView* self, SEL _cmd) {
   original_level_ = [window_ level];
 }
 
-NativeWindowMac::~NativeWindowMac() {
+NativeWindowMac::~NativeWindowMac() {}
+
+void NativeWindowMac::Cleanup() {
+  DCHECK(!IsClosed());
   ui::NativeTheme::GetInstanceForNativeUi()->RemoveObserver(this);
-  if (wheel_event_monitor_)
-    [NSEvent removeMonitor:wheel_event_monitor_];
+  [NSEvent removeMonitor:wheel_event_monitor_];
 }
 
 void NativeWindowMac::RedrawTrafficLights() {
@@ -635,13 +637,6 @@ void ViewDidMoveToSuperview(NSView* self, SEL _cmd) {
 }
 
 void NativeWindowMac::CloseImmediately() {
-  // Remove event monitor before destroying window, otherwise the monitor may
-  // call its callback after window has been destroyed.
-  if (wheel_event_monitor_) {
-    [NSEvent removeMonitor:wheel_event_monitor_];
-    wheel_event_monitor_ = nil;
-  }
-
   // Retain the child window before closing it. If the last reference to the
   // NSWindow goes away inside -[NSWindow close], then bad stuff can happen.
   // See e.g. http://crbug.com/616701.
@@ -1144,7 +1139,8 @@ void ViewDidMoveToSuperview(NSView* self, SEL _cmd) {
     }
 
     // Restore window controls visibility state
-    const bool window_button_hidden = !window_button_visibility_.value_or(true);
+    const bool window_button_hidden =
+        !window_button_visibility_.value_or(true) || !has_frame();
     [[window standardWindowButton:NSWindowZoomButton]
         setHidden:window_button_hidden];
     [[window standardWindowButton:NSWindowMiniaturizeButton]
@@ -1275,8 +1271,11 @@ void ViewDidMoveToSuperview(NSView* self, SEL _cmd) {
   }
 
   add_browser_view(view);
-  auto* native_view =
-      view->GetInspectableWebContentsView()->GetNativeView().GetNativeNSView();
+  auto* iwc_view = view->GetInspectableWebContentsView();
+  if (!iwc_view)
+    return;
+
+  auto* native_view = iwc_view->GetNativeView().GetNativeNSView();
   [[window_ contentView] addSubview:native_view
                          positioned:NSWindowAbove
                          relativeTo:nil];
@@ -1294,13 +1293,40 @@ void ViewDidMoveToSuperview(NSView* self, SEL _cmd) {
     return;
   }
 
-  [view->GetInspectableWebContentsView()->GetNativeView().GetNativeNSView()
-      removeFromSuperview];
+  auto* iwc_view = view->GetInspectableWebContentsView();
+  if (!iwc_view)
+    return;
+
+  [iwc_view->GetNativeView().GetNativeNSView() removeFromSuperview];
   remove_browser_view(view);
 
   [CATransaction commit];
 }
 
+void NativeWindowMac::SetTopBrowserView(NativeBrowserView* view) {
+  [CATransaction begin];
+  [CATransaction setDisableActions:YES];
+
+  if (!view) {
+    [CATransaction commit];
+    return;
+  }
+
+  remove_browser_view(view);
+  add_browser_view(view);
+  if (view->GetInspectableWebContentsView()) {
+    auto* native_view = view->GetInspectableWebContentsView()
+                            ->GetNativeView()
+                            .GetNativeNSView();
+    [[window_ contentView] addSubview:native_view
+                           positioned:NSWindowAbove
+                           relativeTo:nil];
+    native_view.hidden = NO;
+  }
+
+  [CATransaction commit];
+}
+
 void NativeWindowMac::SetParentWindow(NativeWindow* parent) {
   InternalSetParentWindow(parent, IsVisible());
 }
diff --git a/shell/browser/native_window_views.cc b/shell/browser/native_window_views.cc
index 83219e3fcebbb..710887f3bca49 100644
--- a/shell/browser/native_window_views.cc
+++ b/shell/browser/native_window_views.cc
@@ -20,6 +20,7 @@
 #include "content/public/browser/desktop_media_id.h"
 #include "shell/browser/api/electron_api_web_contents.h"
 #include "shell/browser/native_browser_view_views.h"
+#include "shell/browser/ui/drag_util.h"
 #include "shell/browser/ui/inspectable_web_contents.h"
 #include "shell/browser/ui/inspectable_web_contents_view.h"
 #include "shell/browser/ui/views/root_view.h"
@@ -420,6 +421,14 @@ void NativeWindowViews::Hide() {
   if (global_menu_bar_)
     global_menu_bar_->OnWindowUnmapped();
 #endif
+
+#if defined(OS_WIN)
+  // When the window is removed from the taskbar via win.hide(),
+  // the thumbnail buttons need to be set up again.
+  // Ensure that when the window is hidden,
+  // the taskbar host is notified that it should re-add them.
+  taskbar_host_.SetThumbarButtonsAdded(false);
+#endif
 }
 
 bool NativeWindowViews::IsVisible() {
@@ -502,6 +511,20 @@ void NativeWindowViews::Unmaximize() {
 }
 
 bool NativeWindowViews::IsMaximized() {
+  // For window without WS_THICKFRAME style, we can not call IsMaximized().
+  // This path will be used for transparent windows as well.
+
+#if defined(OS_WIN)
+  if (!(::GetWindowLong(GetAcceleratedWidget(), GWL_STYLE) & WS_THICKFRAME)) {
+    // Compare the size of the window with the size of the display
+    auto display = display::Screen::GetScreen()->GetDisplayNearestWindow(
+        GetNativeWindow());
+    // Maximized if the window is the same dimensions and placement as the
+    // display
+    return GetBounds() == display.work_area();
+  }
+#endif
+
   return widget()->IsMaximized();
 }
 
@@ -1070,8 +1093,10 @@ void NativeWindowViews::AddBrowserView(NativeBrowserView* view) {
 
   add_browser_view(view);
 
-  content_view()->AddChildView(
-      view->GetInspectableWebContentsView()->GetView());
+  auto* iwc_view = view->GetInspectableWebContentsView();
+  if (!iwc_view)
+    return;
+  content_view()->AddChildView(iwc_view->GetView());
 }
 
 void NativeWindowViews::RemoveBrowserView(NativeBrowserView* view) {
@@ -1082,11 +1107,30 @@ void NativeWindowViews::RemoveBrowserView(NativeBrowserView* view) {
     return;
   }
 
-  content_view()->RemoveChildView(
-      view->GetInspectableWebContentsView()->GetView());
+  auto* iwc_view = view->GetInspectableWebContentsView();
+  if (!iwc_view)
+    return;
+
+  content_view()->RemoveChildView(iwc_view->GetView());
   remove_browser_view(view);
 }
 
+void NativeWindowViews::SetTopBrowserView(NativeBrowserView* view) {
+  if (!content_view())
+    return;
+
+  if (!view) {
+    return;
+  }
+
+  remove_browser_view(view);
+  add_browser_view(view);
+
+  if (view->GetInspectableWebContentsView())
+    content_view()->ReorderChildView(
+        view->GetInspectableWebContentsView()->GetView(), -1);
+}
+
 void NativeWindowViews::SetParentWindow(NativeWindow* parent) {
   NativeWindow::SetParentWindow(parent);
 
@@ -1275,8 +1319,8 @@ gfx::Rect NativeWindowViews::WindowBoundsToContentBounds(
 }
 
 void NativeWindowViews::UpdateDraggableRegions(
-    std::unique_ptr<SkRegion> region) {
-  draggable_region_ = std::move(region);
+    const std::vector<mojom::DraggableRegionPtr>& regions) {
+  draggable_region_ = DraggableRegionsToSkRegion(regions);
 }
 
 #if defined(OS_WIN)
@@ -1330,8 +1374,7 @@ void NativeWindowViews::OnWidgetBoundsChanged(views::Widget* changed_widget,
     int width_delta = new_bounds.width() - widget_size_.width();
     int height_delta = new_bounds.height() - widget_size_.height();
     for (NativeBrowserView* item : browser_views()) {
-      NativeBrowserViewViews* native_view =
-          static_cast<NativeBrowserViewViews*>(item);
+      auto* native_view = static_cast<NativeBrowserViewViews*>(item);
       native_view->SetAutoResizeProportions(widget_size_);
       native_view->AutoResize(new_bounds, width_delta, height_delta);
     }
@@ -1349,6 +1392,10 @@ void NativeWindowViews::OnWidgetDestroying(views::Widget* widget) {
 #endif
 }
 
+void NativeWindowViews::OnWidgetDestroyed(views::Widget* changed_widget) {
+  widget_destroyed_ = true;
+}
+
 void NativeWindowViews::DeleteDelegate() {
   if (is_modal() && this->parent()) {
     auto* parent = this->parent();
@@ -1392,6 +1439,16 @@ views::View* NativeWindowViews::GetContentsView() {
 bool NativeWindowViews::ShouldDescendIntoChildForEventHandling(
     gfx::NativeView child,
     const gfx::Point& location) {
+  // App window should claim mouse events that fall within any BrowserViews'
+  // draggable region.
+  for (auto* view : browser_views()) {
+    auto* native_view = static_cast<NativeBrowserViewViews*>(view);
+    auto* view_draggable_region = native_view->draggable_region();
+    if (view_draggable_region &&
+        view_draggable_region->contains(location.x(), location.y()))
+      return false;
+  }
+
   // App window should claim mouse events that fall within the draggable region.
   if (draggable_region() &&
       draggable_region()->contains(location.x(), location.y()))
@@ -1399,7 +1456,7 @@ bool NativeWindowViews::ShouldDescendIntoChildForEventHandling(
 
   // And the events on border for dragging resizable frameless window.
   if (!has_frame() && CanResize()) {
-    FramelessView* frame =
+    auto* frame =
         static_cast<FramelessView*>(widget()->non_client_view()->frame_view());
     return frame->ResizingBorderHitTest(location) == HTNOWHERE;
   }
@@ -1435,6 +1492,9 @@ void NativeWindowViews::OnWidgetMove() {
 void NativeWindowViews::HandleKeyboardEvent(
     content::WebContents*,
     const content::NativeWebKeyboardEvent& event) {
+  if (widget_destroyed_)
+    return;
+
 #if defined(OS_LINUX)
   if (event.windows_key_code == ui::VKEY_BROWSER_BACK)
     NotifyWindowExecuteAppCommand(kBrowserBackward);
diff --git a/shell/browser/native_window_views.h b/shell/browser/native_window_views.h
index ea7d38c0fb836..5352f93899bba 100644
--- a/shell/browser/native_window_views.h
+++ b/shell/browser/native_window_views.h
@@ -11,7 +11,9 @@
 #include <set>
 #include <string>
 #include <tuple>
+#include <vector>
 
+#include "shell/common/api/api.mojom.h"
 #include "ui/views/widget/widget_observer.h"
 
 #if defined(OS_WIN)
@@ -112,6 +114,7 @@ class NativeWindowViews : public NativeWindow,
   void SetMenu(ElectronMenuModel* menu_model) override;
   void AddBrowserView(NativeBrowserView* browser_view) override;
   void RemoveBrowserView(NativeBrowserView* browser_view) override;
+  void SetTopBrowserView(NativeBrowserView* browser_view) override;
   void SetParentWindow(NativeWindow* parent) override;
   gfx::NativeView GetNativeView() const override;
   gfx::NativeWindow GetNativeWindow() const override;
@@ -137,7 +140,8 @@ class NativeWindowViews : public NativeWindow,
   gfx::Rect ContentBoundsToWindowBounds(const gfx::Rect& bounds) const override;
   gfx::Rect WindowBoundsToContentBounds(const gfx::Rect& bounds) const override;
 
-  void UpdateDraggableRegions(std::unique_ptr<SkRegion> region);
+  void UpdateDraggableRegions(
+      const std::vector<mojom::DraggableRegionPtr>& regions);
 
   void IncrementChildModals();
   void DecrementChildModals();
@@ -170,6 +174,7 @@ class NativeWindowViews : public NativeWindow,
   void OnWidgetBoundsChanged(views::Widget* widget,
                              const gfx::Rect& bounds) override;
   void OnWidgetDestroying(views::Widget* widget) override;
+  void OnWidgetDestroyed(views::Widget* widget) override;
 
   // views::WidgetDelegate:
   void DeleteDelegate() override;
@@ -303,6 +308,7 @@ class NativeWindowViews : public NativeWindow,
   std::string title_;
   gfx::Size widget_size_;
   double opacity_ = 1.0;
+  bool widget_destroyed_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(NativeWindowViews);
 };
diff --git a/shell/browser/native_window_views_win.cc b/shell/browser/native_window_views_win.cc
index ac9d7fd2a4dc8..8b337220ddbd4 100644
--- a/shell/browser/native_window_views_win.cc
+++ b/shell/browser/native_window_views_win.cc
@@ -149,9 +149,7 @@ std::set<NativeWindowViews*> NativeWindowViews::forwarding_windows_;
 HHOOK NativeWindowViews::mouse_hook_ = NULL;
 
 void NativeWindowViews::Maximize() {
-  // Only use Maximize() when:
-  // 1. window has WS_THICKFRAME style;
-  // 2. and window is not frameless when there is autohide taskbar.
+  // Only use Maximize() when window has WS_THICKFRAME style
   if (::GetWindowLong(GetAcceleratedWidget(), GWL_STYLE) & WS_THICKFRAME) {
     if (IsVisible())
       widget()->Maximize();
@@ -161,8 +159,8 @@ void NativeWindowViews::Maximize() {
     return;
   } else {
     restore_bounds_ = GetBounds();
-    auto display =
-        display::Screen::GetScreen()->GetDisplayNearestPoint(GetPosition());
+    auto display = display::Screen::GetScreen()->GetDisplayNearestWindow(
+        GetNativeWindow());
     SetBounds(display.work_area(), false);
   }
 }
@@ -378,7 +376,7 @@ void NativeWindowViews::SetForwardMouseMessages(bool forward) {
 
     RemoveWindowSubclass(legacy_window_, SubclassProc, 1);
 
-    if (forwarding_windows_.size() == 0) {
+    if (forwarding_windows_.empty()) {
       UnhookWindowsHookEx(mouse_hook_);
       mouse_hook_ = NULL;
     }
@@ -391,7 +389,7 @@ LRESULT CALLBACK NativeWindowViews::SubclassProc(HWND hwnd,
                                                  LPARAM l_param,
                                                  UINT_PTR subclass_id,
                                                  DWORD_PTR ref_data) {
-  NativeWindowViews* window = reinterpret_cast<NativeWindowViews*>(ref_data);
+  auto* window = reinterpret_cast<NativeWindowViews*>(ref_data);
   switch (msg) {
     case WM_MOUSELEAVE: {
       // When input is forwarded to underlying windows, this message is posted.
diff --git a/shell/browser/notifications/mac/notification_center_delegate.mm b/shell/browser/notifications/mac/notification_center_delegate.mm
index c97bd5e841a22..d632d15774e29 100644
--- a/shell/browser/notifications/mac/notification_center_delegate.mm
+++ b/shell/browser/notifications/mac/notification_center_delegate.mm
@@ -42,10 +42,7 @@ - (void)userNotificationCenter:(NSUserNotificationCenter*)center
     // https://developer.apple.com/documentation/foundation/nsusernotificationactivationtype?language=objc
     if (notif.activationType ==
         NSUserNotificationActivationTypeContentsClicked) {
-      // If a notification with a reply button is clicked and the user has not
-      // yet replied, we do not want to destroy the notification.
-      bool should_destroy = ![notif hasReplyButton];
-      notification->NotificationClicked(should_destroy);
+      notification->NotificationClicked();
     } else if (notif.activationType ==
                NSUserNotificationActivationTypeActionButtonClicked) {
       notification->NotificationActivated();
diff --git a/shell/browser/notifications/notification.cc b/shell/browser/notifications/notification.cc
index 7c894dc8e0147..62c4441b0a437 100644
--- a/shell/browser/notifications/notification.cc
+++ b/shell/browser/notifications/notification.cc
@@ -21,12 +21,10 @@ Notification::~Notification() {
     delegate()->NotificationDestroyed();
 }
 
-void Notification::NotificationClicked(bool should_destroy) {
+void Notification::NotificationClicked() {
   if (delegate())
     delegate()->NotificationClick();
-
-  if (should_destroy)
-    Destroy();
+  Destroy();
 }
 
 void Notification::NotificationDismissed() {
diff --git a/shell/browser/notifications/notification.h b/shell/browser/notifications/notification.h
index ac95e575b12fa..1a465bdbef881 100644
--- a/shell/browser/notifications/notification.h
+++ b/shell/browser/notifications/notification.h
@@ -54,7 +54,7 @@ class Notification {
   virtual void Dismiss() = 0;
 
   // Should be called by derived classes.
-  void NotificationClicked(bool should_destroy = true);
+  void NotificationClicked();
   void NotificationDismissed();
   void NotificationFailed();
 
diff --git a/shell/browser/notifications/platform_notification_service.cc b/shell/browser/notifications/platform_notification_service.cc
index 08b1e422f9354..1fc4a3752c352 100644
--- a/shell/browser/notifications/platform_notification_service.cc
+++ b/shell/browser/notifications/platform_notification_service.cc
@@ -96,8 +96,7 @@ void PlatformNotificationService::DisplayNotification(
   // See: https://notifications.spec.whatwg.org/#showing-a-notification
   presenter->CloseNotificationWithId(notification_id);
 
-  NotificationDelegateImpl* delegate =
-      new NotificationDelegateImpl(notification_id);
+  auto* delegate = new NotificationDelegateImpl(notification_id);
 
   auto notification = presenter->CreateNotification(delegate, notification_id);
   if (notification) {
diff --git a/shell/browser/notifications/win/windows_toast_notification.cc b/shell/browser/notifications/win/windows_toast_notification.cc
index 30070d0b9cd0f..799bbbfec1fdc 100644
--- a/shell/browser/notifications/win/windows_toast_notification.cc
+++ b/shell/browser/notifications/win/windows_toast_notification.cc
@@ -20,6 +20,8 @@
 #include "shell/browser/notifications/win/notification_presenter_win.h"
 #include "shell/browser/win/scoped_hstring.h"
 #include "shell/common/application_info.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/strings/grit/ui_strings.h"
 
 using ABI::Windows::Data::Xml::Dom::IXmlAttribute;
 using ABI::Windows::Data::Xml::Dom::IXmlDocument;
@@ -227,8 +229,8 @@ bool WindowsToastNotification::SetXmlScenarioReminder(IXmlDocument* doc) {
     return false;
 
   // get attributes of root "toast" node
-  ComPtr<IXmlNamedNodeMap> attributes;
-  if (FAILED(root->get_Attributes(&attributes)))
+  ComPtr<IXmlNamedNodeMap> toast_attributes;
+  if (FAILED(root->get_Attributes(&toast_attributes)))
     return false;
 
   ComPtr<IXmlAttribute> scenario_attribute;
@@ -252,14 +254,160 @@ bool WindowsToastNotification::SetXmlScenarioReminder(IXmlDocument* doc) {
   if (FAILED(scenario_text.As(&scenario_node)))
     return false;
 
-  ComPtr<IXmlNode> child_node;
+  ComPtr<IXmlNode> scenario_backup_node;
   if (FAILED(scenario_attribute_node->AppendChild(scenario_node.Get(),
-                                                  &child_node)))
+                                                  &scenario_backup_node)))
     return false;
 
   ComPtr<IXmlNode> scenario_attribute_pnode;
-  return SUCCEEDED(attributes.Get()->SetNamedItem(scenario_attribute_node.Get(),
-                                                  &scenario_attribute_pnode));
+  if (FAILED(toast_attributes.Get()->SetNamedItem(scenario_attribute_node.Get(),
+                                                  &scenario_attribute_pnode)))
+    return false;
+
+  // Create "actions" wrapper
+  ComPtr<IXmlElement> actions_wrapper_element;
+  ScopedHString actions_wrapper_str(L"actions");
+  if (FAILED(doc->CreateElement(actions_wrapper_str, &actions_wrapper_element)))
+    return false;
+
+  ComPtr<IXmlNode> actions_wrapper_node_tmp;
+  if (FAILED(actions_wrapper_element.As(&actions_wrapper_node_tmp)))
+    return false;
+
+  // Append actions wrapper node to toast xml
+  ComPtr<IXmlNode> actions_wrapper_node;
+  if (FAILED(root->AppendChild(actions_wrapper_node_tmp.Get(),
+                               &actions_wrapper_node)))
+    return false;
+
+  ComPtr<IXmlNamedNodeMap> attributes_actions_wrapper;
+  if (FAILED(actions_wrapper_node->get_Attributes(&attributes_actions_wrapper)))
+    return false;
+
+  // Add a "Dismiss" button
+  // Create "action" tag
+  ComPtr<IXmlElement> action_element;
+  ScopedHString action_str(L"action");
+  if (FAILED(doc->CreateElement(action_str, &action_element)))
+    return false;
+
+  ComPtr<IXmlNode> action_node_tmp;
+  if (FAILED(action_element.As(&action_node_tmp)))
+    return false;
+
+  // Append action node to actions wrapper in toast xml
+  ComPtr<IXmlNode> action_node;
+  if (FAILED(actions_wrapper_node->AppendChild(action_node_tmp.Get(),
+                                               &action_node)))
+    return false;
+
+  // Setup attributes for action
+  ComPtr<IXmlNamedNodeMap> action_attributes;
+  if (FAILED(action_node->get_Attributes(&action_attributes)))
+    return false;
+
+  // Create activationType attribute
+  ComPtr<IXmlAttribute> activation_type_attribute;
+  ScopedHString activation_type_str(L"activationType");
+  if (FAILED(doc->CreateAttribute(activation_type_str,
+                                  &activation_type_attribute)))
+    return false;
+
+  ComPtr<IXmlNode> activation_type_attribute_node;
+  if (FAILED(activation_type_attribute.As(&activation_type_attribute_node)))
+    return false;
+
+  // Set activationType attribute to system
+  ScopedHString activation_type_value(L"system");
+  if (!activation_type_value.success())
+    return E_FAIL;
+
+  ComPtr<IXmlText> activation_type_text;
+  if (FAILED(doc->CreateTextNode(activation_type_value, &activation_type_text)))
+    return false;
+
+  ComPtr<IXmlNode> activation_type_node;
+  if (FAILED(activation_type_text.As(&activation_type_node)))
+    return false;
+
+  ComPtr<IXmlNode> activation_type_backup_node;
+  if (FAILED(activation_type_attribute_node->AppendChild(
+          activation_type_node.Get(), &activation_type_backup_node)))
+    return false;
+
+  // Add activation type to the action attributes
+  ComPtr<IXmlNode> activation_type_attribute_pnode;
+  if (FAILED(action_attributes.Get()->SetNamedItem(
+          activation_type_attribute_node.Get(),
+          &activation_type_attribute_pnode)))
+    return false;
+
+  // Create arguments attribute
+  ComPtr<IXmlAttribute> arguments_attribute;
+  ScopedHString arguments_str(L"arguments");
+  if (FAILED(doc->CreateAttribute(arguments_str, &arguments_attribute)))
+    return false;
+
+  ComPtr<IXmlNode> arguments_attribute_node;
+  if (FAILED(arguments_attribute.As(&arguments_attribute_node)))
+    return false;
+
+  // Set arguments attribute to dismiss
+  ScopedHString arguments_value(L"dismiss");
+  if (!arguments_value.success())
+    return E_FAIL;
+
+  ComPtr<IXmlText> arguments_text;
+  if (FAILED(doc->CreateTextNode(arguments_value, &arguments_text)))
+    return false;
+
+  ComPtr<IXmlNode> arguments_node;
+  if (FAILED(arguments_text.As(&arguments_node)))
+    return false;
+
+  ComPtr<IXmlNode> arguments_backup_node;
+  if (FAILED(arguments_attribute_node->AppendChild(arguments_node.Get(),
+                                                   &arguments_backup_node)))
+    return false;
+
+  // Add arguments to the action attributes
+  ComPtr<IXmlNode> arguments_attribute_pnode;
+  if (FAILED(action_attributes.Get()->SetNamedItem(
+          arguments_attribute_node.Get(), &arguments_attribute_pnode)))
+    return false;
+
+  // Create content attribute
+  ComPtr<IXmlAttribute> content_attribute;
+  ScopedHString content_str(L"content");
+  if (FAILED(doc->CreateAttribute(content_str, &content_attribute)))
+    return false;
+
+  ComPtr<IXmlNode> content_attribute_node;
+  if (FAILED(content_attribute.As(&content_attribute_node)))
+    return false;
+
+  // Set content attribute to Dismiss
+  ScopedHString content_value(l10n_util::GetStringUTF16(IDS_APP_CLOSE));
+  if (!content_value.success())
+    return E_FAIL;
+
+  ComPtr<IXmlText> content_text;
+  if (FAILED(doc->CreateTextNode(content_value, &content_text)))
+    return false;
+
+  ComPtr<IXmlNode> content_node;
+  if (FAILED(content_text.As(&content_node)))
+    return false;
+
+  ComPtr<IXmlNode> content_backup_node;
+  if (FAILED(content_attribute_node->AppendChild(content_node.Get(),
+                                                 &content_backup_node)))
+    return false;
+
+  // Add content to the action attributes
+  ComPtr<IXmlNode> content_attribute_pnode;
+  return SUCCEEDED(action_attributes.Get()->SetNamedItem(
+      content_attribute_node.Get(), &content_attribute_pnode));
 }
 
 bool WindowsToastNotification::SetXmlAudioSilent(IXmlDocument* doc) {
@@ -476,7 +624,7 @@ IFACEMETHODIMP ToastEventHandler::Invoke(
     IInspectable* args) {
   base::PostTask(
       FROM_HERE, {content::BrowserThread::UI},
-      base::BindOnce(&Notification::NotificationClicked, notification_, true));
+      base::BindOnce(&Notification::NotificationClicked, notification_));
   if (IsDebuggingNotifications())
     LOG(INFO) << "Notification clicked";
 
diff --git a/shell/browser/osr/osr_render_widget_host_view.cc b/shell/browser/osr/osr_render_widget_host_view.cc
index 471cc29b94b40..149bedf3d4e7c 100644
--- a/shell/browser/osr/osr_render_widget_host_view.cc
+++ b/shell/browser/osr/osr_render_widget_host_view.cc
@@ -386,8 +386,7 @@ void OffScreenRenderWidgetHostView::TakeFallbackContentFrom(
     content::RenderWidgetHostView* view) {
   DCHECK(!static_cast<content::RenderWidgetHostViewBase*>(view)
               ->IsRenderWidgetHostViewChildFrame());
-  OffScreenRenderWidgetHostView* view_osr =
-      static_cast<OffScreenRenderWidgetHostView*>(view);
+  auto* view_osr = static_cast<OffScreenRenderWidgetHostView*>(view);
   SetBackgroundColor(view_osr->background_color_);
   if (GetDelegatedFrameHost() && view_osr->GetDelegatedFrameHost()) {
     GetDelegatedFrameHost()->TakeFallbackContentFrom(
@@ -684,7 +683,7 @@ void OffScreenRenderWidgetHostView::CompositeFrame(
   SkBitmap frame;
 
   // Optimize for the case when there is no popup
-  if (proxy_views_.size() == 0 && !popup_host_view_) {
+  if (proxy_views_.empty() && !popup_host_view_) {
     frame = GetBacking();
   } else {
     frame.allocN32Pixels(size_in_pixels.width(), size_in_pixels.height(),
diff --git a/shell/browser/osr/osr_web_contents_view.cc b/shell/browser/osr/osr_web_contents_view.cc
index 0b97193b4a6d8..60ad42c55afec 100644
--- a/shell/browser/osr/osr_web_contents_view.cc
+++ b/shell/browser/osr/osr_web_contents_view.cc
@@ -126,15 +126,13 @@ OffScreenWebContentsView::CreateViewForWidget(
 content::RenderWidgetHostViewBase*
 OffScreenWebContentsView::CreateViewForChildWidget(
     content::RenderWidgetHost* render_widget_host) {
-  content::WebContentsImpl* web_contents_impl =
+  auto* web_contents_impl =
       static_cast<content::WebContentsImpl*>(web_contents_);
 
-  OffScreenRenderWidgetHostView* view =
-      static_cast<OffScreenRenderWidgetHostView*>(
-          web_contents_impl->GetOuterWebContents()
-              ? web_contents_impl->GetOuterWebContents()
-                    ->GetRenderWidgetHostView()
-              : web_contents_impl->GetRenderWidgetHostView());
+  auto* view = static_cast<OffScreenRenderWidgetHostView*>(
+      web_contents_impl->GetOuterWebContents()
+          ? web_contents_impl->GetOuterWebContents()->GetRenderWidgetHostView()
+          : web_contents_impl->GetRenderWidgetHostView());
 
   return new OffScreenRenderWidgetHostView(transparent_, painting_,
                                            view->GetFrameRate(), callback_,
diff --git a/shell/browser/resources/mac/Info.plist b/shell/browser/resources/mac/Info.plist
index 425d45ca7418a..5a1d71cbc86c0 100644
--- a/shell/browser/resources/mac/Info.plist
+++ b/shell/browser/resources/mac/Info.plist
@@ -40,7 +40,5 @@
     <string>This app needs access to the microphone</string>
     <key>NSCameraUsageDescription</key>
     <string>This app needs access to the camera</string>
-    <key>LSRequiresNativeExecution</key>
-    <true/>
   </dict>
 </plist>
diff --git a/shell/browser/resources/win/electron.rc b/shell/browser/resources/win/electron.rc
index 723f32511d733..680ea2ad56c18 100644
--- a/shell/browser/resources/win/electron.rc
+++ b/shell/browser/resources/win/electron.rc
@@ -50,8 +50,8 @@ END
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 10,1,0,0
- PRODUCTVERSION 10,1,0,0
+ FILEVERSION 10,4,7,0
+ PRODUCTVERSION 10,4,7,0
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -68,12 +68,12 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "GitHub, Inc."
             VALUE "FileDescription", "Electron"
-            VALUE "FileVersion", "10.1.0"
+            VALUE "FileVersion", "10.4.7"
             VALUE "InternalName", "electron.exe"
             VALUE "LegalCopyright", "Copyright (C) 2015 GitHub, Inc. All rights reserved."
             VALUE "OriginalFilename", "electron.exe"
             VALUE "ProductName", "Electron"
-            VALUE "ProductVersion", "10.1.0"
+            VALUE "ProductVersion", "10.4.7"
             VALUE "SquirrelAwareVersion", "1"
         END
     END
diff --git a/shell/browser/ui/autofill_popup.cc b/shell/browser/ui/autofill_popup.cc
index 63aa64d7ac93e..aad02085208fb 100644
--- a/shell/browser/ui/autofill_popup.cc
+++ b/shell/browser/ui/autofill_popup.cc
@@ -148,7 +148,7 @@ int AutofillPopup::GetDesiredPopupWidth() {
         kEndPadding + 2 * kPopupBorderThickness +
         gfx::GetStringWidth(GetValueAt(i), GetValueFontListForRow(i)) +
         gfx::GetStringWidth(GetLabelAt(i), GetLabelFontListForRow(i));
-    if (GetLabelAt(i).length() > 0)
+    if (!GetLabelAt(i).empty())
       row_size += kNamePadding + kEndPadding;
 
     popup_width = std::max(popup_width, row_size);
diff --git a/shell/browser/ui/cocoa/electron_inspectable_web_contents_view.h b/shell/browser/ui/cocoa/electron_inspectable_web_contents_view.h
index 691c25f639332..ba247812bb8b1 100644
--- a/shell/browser/ui/cocoa/electron_inspectable_web_contents_view.h
+++ b/shell/browser/ui/cocoa/electron_inspectable_web_contents_view.h
@@ -17,12 +17,20 @@ class InspectableWebContentsViewMac;
 
 using electron::InspectableWebContentsViewMac;
 
+@interface NSView (WebContentsView)
+- (void)setMouseDownCanMoveWindow:(BOOL)can_move;
+@end
+
+@interface ControlRegionView : NSView
+@end
+
 @interface ElectronInspectableWebContentsView : BaseView <NSWindowDelegate> {
  @private
   electron::InspectableWebContentsViewMac* inspectableWebContentsView_;
 
   base::scoped_nsobject<NSView> fake_view_;
   base::scoped_nsobject<NSWindow> devtools_window_;
+  base::scoped_nsobject<ControlRegionView> devtools_mask_;
   BOOL devtools_visible_;
   BOOL devtools_docked_;
   BOOL devtools_is_first_responder_;
diff --git a/shell/browser/ui/cocoa/electron_inspectable_web_contents_view.mm b/shell/browser/ui/cocoa/electron_inspectable_web_contents_view.mm
index 0b25862211bd3..4f932e7efcc8e 100644
--- a/shell/browser/ui/cocoa/electron_inspectable_web_contents_view.mm
+++ b/shell/browser/ui/cocoa/electron_inspectable_web_contents_view.mm
@@ -11,6 +11,18 @@
 #include "shell/browser/ui/inspectable_web_contents_view_mac.h"
 #include "ui/gfx/mac/scoped_cocoa_disable_screen_updates.h"
 
+@implementation ControlRegionView
+
+- (BOOL)mouseDownCanMoveWindow {
+  return NO;
+}
+
+- (NSView*)hitTest:(NSPoint)aPoint {
+  return nil;
+}
+
+@end
+
 @implementation ElectronInspectableWebContentsView
 
 - (instancetype)initWithInspectableWebContentsViewMac:
@@ -48,6 +60,9 @@ - (instancetype)initWithInspectableWebContentsViewMac:
     [self addSubview:contentsView];
   }
 
+  // This will float above devtools to exclude it from dragging.
+  devtools_mask_.reset([[ControlRegionView alloc] initWithFrame:NSZeroRect]);
+
   // See https://code.google.com/p/chromium/issues/detail?id=348490.
   [self setWantsLayer:YES];
 
@@ -71,6 +86,14 @@ - (void)notifyDevToolsFocused {
     inspectableWebContentsView_->GetDelegate()->DevToolsFocused();
 }
 
+- (void)notifyDevToolsResized {
+  // When devtools is opened, resizing devtools would not trigger
+  // UpdateDraggableRegions for WebContents, so we have to notify the window
+  // to do an update of draggable regions.
+  if (inspectableWebContentsView_->GetDelegate())
+    inspectableWebContentsView_->GetDelegate()->DevToolsResized();
+}
+
 - (void)setDevToolsVisible:(BOOL)visible activate:(BOOL)activate {
   if (visible == devtools_visible_)
     return;
@@ -84,6 +107,12 @@ - (void)setDevToolsVisible:(BOOL)visible activate:(BOOL)activate {
   devtools_visible_ = visible;
   if (devtools_docked_) {
     if (visible) {
+      // The devToolsView is placed under the contentsView, so it has to be
+      // draggable to make draggable region of contentsView work.
+      [devToolsView setMouseDownCanMoveWindow:YES];
+      // This view will exclude the actual devtools part from dragging.
+      [self addSubview:devtools_mask_.get()];
+
       // Place the devToolsView under contentsView, notice that we didn't set
       // sizes for them until the setContentsResizingStrategy message.
       [self addSubview:devToolsView positioned:NSWindowBelow relativeTo:nil];
@@ -94,7 +123,9 @@ - (void)setDevToolsVisible:(BOOL)visible activate:(BOOL)activate {
     } else {
       gfx::ScopedCocoaDisableScreenUpdates disabler;
       [devToolsView removeFromSuperview];
+      [devtools_mask_ removeFromSuperview];
       [self adjustSubviews];
+      [self notifyDevToolsResized];
     }
   } else {
     if (visible) {
@@ -182,7 +213,7 @@ - (void)adjustSubviews {
   NSView* devToolsView = [[self subviews] objectAtIndex:0];
   NSView* contentsView = [[self subviews] objectAtIndex:1];
 
-  DCHECK_EQ(2u, [[self subviews] count]);
+  DCHECK_EQ(3u, [[self subviews] count]);
 
   gfx::Rect new_devtools_bounds;
   gfx::Rect new_contents_bounds;
@@ -191,6 +222,28 @@ - (void)adjustSubviews {
       &new_devtools_bounds, &new_contents_bounds);
   [devToolsView setFrame:[self flipRectToNSRect:new_devtools_bounds]];
   [contentsView setFrame:[self flipRectToNSRect:new_contents_bounds]];
+
+  // Move mask to the devtools area to exclude it from dragging.
+  NSRect cf = contentsView.frame;
+  NSRect sb = [self bounds];
+  NSRect devtools_frame;
+  if (cf.size.height < sb.size.height) {  // bottom docked
+    devtools_frame.origin.x = 0;
+    devtools_frame.origin.y = 0;
+    devtools_frame.size.width = sb.size.width;
+    devtools_frame.size.height = sb.size.height - cf.size.height;
+  } else {                // left or right docked
+    if (cf.origin.x > 0)  // left docked
+      devtools_frame.origin.x = 0;
+    else  // right docked.
+      devtools_frame.origin.x = cf.size.width;
+    devtools_frame.origin.y = 0;
+    devtools_frame.size.width = sb.size.width - cf.size.width;
+    devtools_frame.size.height = sb.size.height;
+  }
+  [devtools_mask_ setFrame:devtools_frame];
+
+  [self notifyDevToolsResized];
 }
 
 - (void)setTitle:(NSString*)title {
diff --git a/shell/browser/ui/cocoa/electron_menu_controller.mm b/shell/browser/ui/cocoa/electron_menu_controller.mm
index d8da2457938a5..31e43c8c2cbef 100644
--- a/shell/browser/ui/cocoa/electron_menu_controller.mm
+++ b/shell/browser/ui/cocoa/electron_menu_controller.mm
@@ -297,7 +297,7 @@ - (void)addItemToMenu:(NSMenu*)menu
 
     [item setTarget:nil];
     [item setAction:nil];
-    NSMenu* submenu = [[NSMenu alloc] initWithTitle:label];
+    NSMenu* submenu = [[[NSMenu alloc] initWithTitle:label] autorelease];
     [item setSubmenu:submenu];
     [NSApp setServicesMenu:submenu];
   } else if (type == electron::ElectronMenuModel::TYPE_SUBMENU &&
diff --git a/shell/browser/ui/cocoa/electron_ns_window_delegate.mm b/shell/browser/ui/cocoa/electron_ns_window_delegate.mm
index 72b46185e75d2..4c81ff4753bd5 100644
--- a/shell/browser/ui/cocoa/electron_ns_window_delegate.mm
+++ b/shell/browser/ui/cocoa/electron_ns_window_delegate.mm
@@ -283,6 +283,7 @@ - (void)windowDidExitFullScreen:(NSNotification*)notification {
 }
 
 - (void)windowWillClose:(NSNotification*)notification {
+  shell_->Cleanup();
   shell_->NotifyWindowClosed();
 
   // Something called -[NSWindow close] on a sheet rather than calling
diff --git a/shell/browser/ui/devtools_manager_delegate.cc b/shell/browser/ui/devtools_manager_delegate.cc
index 91d8a3aabaae4..269df1193ef00 100644
--- a/shell/browser/ui/devtools_manager_delegate.cc
+++ b/shell/browser/ui/devtools_manager_delegate.cc
@@ -129,9 +129,8 @@ DevToolsManagerDelegate::CreateNewTarget(const GURL& url) {
 }
 
 std::string DevToolsManagerDelegate::GetDiscoveryPageHTML() {
-  return ui::ResourceBundle::GetSharedInstance()
-      .GetRawDataResource(IDR_CONTENT_SHELL_DEVTOOLS_DISCOVERY_PAGE)
-      .as_string();
+  return ui::ResourceBundle::GetSharedInstance().LoadDataResourceString(
+      IDR_CONTENT_SHELL_DEVTOOLS_DISCOVERY_PAGE);
 }
 
 bool DevToolsManagerDelegate::HasBundledFrontendResources() {
diff --git a/shell/browser/ui/drag_util.cc b/shell/browser/ui/drag_util.cc
new file mode 100644
index 0000000000000..f90dba9193225
--- /dev/null
+++ b/shell/browser/ui/drag_util.cc
@@ -0,0 +1,42 @@
+// Copyright (c) 2020 Microsoft, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "shell/browser/ui/drag_util.h"
+
+#include <memory>
+
+#include "ui/gfx/skia_util.h"
+
+namespace electron {
+
+// Return a vector of non-draggable regions that fill a window of size
+// |width| by |height|, but leave gaps where the window should be draggable.
+std::vector<gfx::Rect> CalculateNonDraggableRegions(
+    std::unique_ptr<SkRegion> draggable,
+    int width,
+    int height) {
+  std::vector<gfx::Rect> result;
+  SkRegion non_draggable;
+  non_draggable.op({0, 0, width, height}, SkRegion::kUnion_Op);
+  non_draggable.op(*draggable, SkRegion::kDifference_Op);
+  for (SkRegion::Iterator it(non_draggable); !it.done(); it.next()) {
+    result.push_back(gfx::SkIRectToRect(it.rect()));
+  }
+  return result;
+}
+
+// Convert draggable regions in raw format to SkRegion format.
+std::unique_ptr<SkRegion> DraggableRegionsToSkRegion(
+    const std::vector<mojom::DraggableRegionPtr>& regions) {
+  auto sk_region = std::make_unique<SkRegion>();
+  for (const auto& region : regions) {
+    sk_region->op(
+        SkIRect::MakeLTRB(region->bounds.x(), region->bounds.y(),
+                          region->bounds.right(), region->bounds.bottom()),
+        region->draggable ? SkRegion::kUnion_Op : SkRegion::kDifference_Op);
+  }
+  return sk_region;
+}
+
+}  // namespace electron
diff --git a/shell/browser/ui/drag_util.h b/shell/browser/ui/drag_util.h
index 784bf879b9638..9fe50a4b59e3e 100644
--- a/shell/browser/ui/drag_util.h
+++ b/shell/browser/ui/drag_util.h
@@ -5,8 +5,12 @@
 #ifndef SHELL_BROWSER_UI_DRAG_UTIL_H_
 #define SHELL_BROWSER_UI_DRAG_UTIL_H_
 
+#include <memory>
 #include <vector>
 
+#include "shell/common/api/api.mojom.h"
+#include "third_party/skia/include/core/SkRegion.h"
+#include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/image/image.h"
 
 namespace base {
@@ -19,6 +23,15 @@ void DragFileItems(const std::vector<base::FilePath>& files,
                    const gfx::Image& icon,
                    gfx::NativeView view);
 
+std::vector<gfx::Rect> CalculateNonDraggableRegions(
+    std::unique_ptr<SkRegion> draggable,
+    int width,
+    int height);
+
+// Convert draggable regions in raw format to SkRegion format.
+std::unique_ptr<SkRegion> DraggableRegionsToSkRegion(
+    const std::vector<mojom::DraggableRegionPtr>& regions);
+
 }  // namespace electron
 
 #endif  // SHELL_BROWSER_UI_DRAG_UTIL_H_
diff --git a/shell/browser/ui/file_dialog_mac.mm b/shell/browser/ui/file_dialog_mac.mm
index 73d12d5ab5956..d490e1656a02f 100644
--- a/shell/browser/ui/file_dialog_mac.mm
+++ b/shell/browser/ui/file_dialog_mac.mm
@@ -90,7 +90,8 @@ void SetAllowedFileTypes(NSSavePanel* dialog, const Filters& filters) {
 
   // Create array to keep file types and their name.
   for (const Filter& filter : filters) {
-    NSMutableSet* file_type_set = [NSMutableSet set];
+    NSMutableOrderedSet* file_type_set =
+        [NSMutableOrderedSet orderedSetWithCapacity:filters.size()];
     [filter_names addObject:@(filter.first.c_str())];
     for (std::string ext : filter.second) {
       // macOS is incapable of understanding multiple file extensions,
@@ -104,7 +105,7 @@ void SetAllowedFileTypes(NSSavePanel* dialog, const Filters& filters) {
 
       [file_type_set addObject:@(ext.c_str())];
     }
-    [file_types_list addObject:[file_type_set allObjects]];
+    [file_types_list addObject:[file_type_set array]];
   }
 
   // Passing empty array to setAllowedFileTypes will cause exception.
diff --git a/shell/browser/ui/inspectable_web_contents_impl.cc b/shell/browser/ui/inspectable_web_contents_impl.cc
index e568b9195843f..30936dcdb470b 100644
--- a/shell/browser/ui/inspectable_web_contents_impl.cc
+++ b/shell/browser/ui/inspectable_web_contents_impl.cc
@@ -576,7 +576,7 @@ void InspectableWebContentsImpl::LoadCompleted() {
       base::RemoveChars(current_dock_state, "\"", &dock_state_);
     }
     base::string16 javascript = base::UTF8ToUTF16(
-        "Components.dockController.setDockSide(\"" + dock_state_ + "\");");
+        "UI.DockController.instance().setDockSide(\"" + dock_state_ + "\");");
     GetDevToolsWebContents()->GetMainFrame()->ExecuteJavaScript(
         javascript, base::NullCallback());
   }
diff --git a/shell/browser/ui/inspectable_web_contents_view_delegate.h b/shell/browser/ui/inspectable_web_contents_view_delegate.h
index 73c4214d3874b..a93a17bce75aa 100644
--- a/shell/browser/ui/inspectable_web_contents_view_delegate.h
+++ b/shell/browser/ui/inspectable_web_contents_view_delegate.h
@@ -19,6 +19,7 @@ class InspectableWebContentsViewDelegate {
   virtual void DevToolsFocused() {}
   virtual void DevToolsOpened() {}
   virtual void DevToolsClosed() {}
+  virtual void DevToolsResized() {}
 
   // Returns the icon of devtools window.
   virtual gfx::ImageSkia GetDevToolsWindowIcon();
diff --git a/shell/browser/ui/message_box_gtk.cc b/shell/browser/ui/message_box_gtk.cc
index 6dbe28e86d42f..5238d0ed57c09 100644
--- a/shell/browser/ui/message_box_gtk.cc
+++ b/shell/browser/ui/message_box_gtk.cc
@@ -80,9 +80,13 @@ class GtkMessageBox : public NativeWindowObserver {
 
     // Add buttons.
     GtkDialog* dialog = GTK_DIALOG(dialog_);
-    for (size_t i = 0; i < settings.buttons.size(); ++i) {
-      gtk_dialog_add_button(dialog, TranslateToStock(i, settings.buttons[i]),
-                            i);
+    if (settings.buttons.size() == 0) {
+      gtk_dialog_add_button(dialog, TranslateToStock(0, "OK"), 0);
+    } else {
+      for (size_t i = 0; i < settings.buttons.size(); ++i) {
+        gtk_dialog_add_button(dialog, TranslateToStock(i, settings.buttons[i]),
+                              i);
+      }
     }
     gtk_dialog_set_default_response(dialog, settings.default_id);
 
@@ -207,7 +211,7 @@ void ShowErrorBox(const base::string16& title, const base::string16& content) {
   if (Browser::Get()->is_ready()) {
     electron::MessageBoxSettings settings;
     settings.type = electron::MessageBoxType::kError;
-    settings.buttons = {"OK"};
+    settings.buttons = {};
     settings.title = "Error";
     settings.message = base::UTF16ToUTF8(title);
     settings.detail = base::UTF16ToUTF8(content);
diff --git a/shell/browser/ui/message_box_mac.mm b/shell/browser/ui/message_box_mac.mm
index 63820e6e3167a..fe24fe963ce42 100644
--- a/shell/browser/ui/message_box_mac.mm
+++ b/shell/browser/ui/message_box_mac.mm
@@ -12,6 +12,7 @@
 
 #include "base/callback.h"
 #include "base/mac/mac_util.h"
+#include "base/mac/scoped_nsobject.h"
 #include "base/strings/sys_string_conversions.h"
 #include "shell/browser/native_window.h"
 #include "skia/ext/skia_utils_mac.h"
@@ -94,14 +95,14 @@
 }  // namespace
 
 int ShowMessageBoxSync(const MessageBoxSettings& settings) {
-  NSAlert* alert = CreateNSAlert(settings);
+  base::scoped_nsobject<NSAlert> alert(CreateNSAlert(settings));
 
   // Use runModal for synchronous alert without parent, since we don't have a
   // window to wait for. Also use it when window is provided but it is not
   // shown as it would be impossible to dismiss the alert if it is connected
   // to invisible window (see #22671).
   if (!settings.parent_window || !settings.parent_window->IsVisible())
-    return [[alert autorelease] runModal];
+    return [alert runModal];
 
   __block int ret_code = -1;
 
@@ -140,6 +141,7 @@ void ShowMessageBox(const MessageBoxSettings& settings,
                   completionHandler:^(NSModalResponse response) {
                     std::move(callback_).Run(
                         response, alert.suppressionButton.state == NSOnState);
+                    [alert release];
                   }];
   }
 }
diff --git a/shell/browser/ui/message_box_win.cc b/shell/browser/ui/message_box_win.cc
index 975f092381a41..380dcde13cc77 100644
--- a/shell/browser/ui/message_box_win.cc
+++ b/shell/browser/ui/message_box_win.cc
@@ -161,7 +161,7 @@ DialogResult ShowTaskDialogUTF16(NativeWindow* parent,
   } else {
     MapToCommonID(buttons, &id_map, &config.dwCommonButtons, &dialog_buttons);
   }
-  if (dialog_buttons.size() > 0) {
+  if (!dialog_buttons.empty()) {
     config.pButtons = &dialog_buttons.front();
     config.cButtons = dialog_buttons.size();
     if (!no_link)
diff --git a/shell/browser/ui/views/autofill_popup_view.cc b/shell/browser/ui/views/autofill_popup_view.cc
index 798c1a371654b..3428aab65c7a7 100644
--- a/shell/browser/ui/views/autofill_popup_view.cc
+++ b/shell/browser/ui/views/autofill_popup_view.cc
@@ -72,7 +72,7 @@ void AutofillPopupView::Show() {
     // The widget is destroyed by the corresponding NativeWidget, so we use
     // a weak pointer to hold the reference and don't have to worry about
     // deletion.
-    views::Widget* widget = new views::Widget;
+    auto* widget = new views::Widget;
     views::Widget::InitParams params(views::Widget::InitParams::TYPE_POPUP);
     params.delegate = this;
     params.parent = parent_widget_->GetNativeView();
diff --git a/shell/browser/ui/views/frameless_view.cc b/shell/browser/ui/views/frameless_view.cc
index 605c90233d07a..685a875b78596 100644
--- a/shell/browser/ui/views/frameless_view.cc
+++ b/shell/browser/ui/views/frameless_view.cc
@@ -4,6 +4,7 @@
 
 #include "shell/browser/ui/views/frameless_view.h"
 
+#include "shell/browser/native_browser_view_views.h"
 #include "shell/browser/native_window_views.h"
 #include "ui/aura/window.h"
 #include "ui/base/hit_test.h"
@@ -68,6 +69,15 @@ int FramelessView::NonClientHitTest(const gfx::Point& cursor) {
   if (frame_->IsFullscreen())
     return HTCLIENT;
 
+  // Check attached BrowserViews for potential draggable areas.
+  for (auto* view : window_->browser_views()) {
+    auto* native_view = static_cast<NativeBrowserViewViews*>(view);
+    auto* view_draggable_region = native_view->draggable_region();
+    if (view_draggable_region &&
+        view_draggable_region->contains(cursor.x(), cursor.y()))
+      return HTCAPTION;
+  }
+
   // Check for possible draggable region in the client area for the frameless
   // window.
   SkRegion* draggable_region = window_->draggable_region();
diff --git a/shell/browser/ui/views/inspectable_web_contents_view_views.cc b/shell/browser/ui/views/inspectable_web_contents_view_views.cc
index 62770dcbe88fa..714e3528501d2 100644
--- a/shell/browser/ui/views/inspectable_web_contents_view_views.cc
+++ b/shell/browser/ui/views/inspectable_web_contents_view_views.cc
@@ -89,7 +89,7 @@ InspectableWebContentsViewViews::InspectableWebContentsViewViews(
       title_(base::ASCIIToUTF16("Developer Tools")) {
   if (!inspectable_web_contents_->IsGuest() &&
       inspectable_web_contents_->GetWebContents()->GetNativeView()) {
-    views::WebView* contents_web_view = new views::WebView(nullptr);
+    auto* contents_web_view = new views::WebView(nullptr);
     contents_web_view->SetWebContents(
         inspectable_web_contents_->GetWebContents());
     contents_web_view_ = contents_web_view;
diff --git a/shell/browser/ui/views/menu_bar.cc b/shell/browser/ui/views/menu_bar.cc
index 54059b228aaad..280aec6b77acb 100644
--- a/shell/browser/ui/views/menu_bar.cc
+++ b/shell/browser/ui/views/menu_bar.cc
@@ -272,7 +272,7 @@ void MenuBar::ButtonPressed(views::Button* source, const ui::Event& event) {
   }
 
   // Deleted in MenuDelegate::OnMenuClosed
-  MenuDelegate* menu_delegate = new MenuDelegate(this);
+  auto* menu_delegate = new MenuDelegate(this);
   menu_delegate->RunMenu(
       menu_model_->GetSubmenuModelAt(id), source,
       event.IsKeyEvent() ? ui::MENU_SOURCE_KEYBOARD : ui::MENU_SOURCE_MOUSE);
diff --git a/shell/browser/ui/views/menu_delegate.cc b/shell/browser/ui/views/menu_delegate.cc
index 3623914dad269..d0e389e5b95b1 100644
--- a/shell/browser/ui/views/menu_delegate.cc
+++ b/shell/browser/ui/views/menu_delegate.cc
@@ -39,7 +39,7 @@ void MenuDelegate::RunMenu(ElectronMenuModel* model,
   id_ = button->tag();
   adapter_ = std::make_unique<MenuModelAdapter>(model);
 
-  views::MenuItemView* item = new views::MenuItemView(this);
+  auto* item = new views::MenuItemView(this);
   static_cast<MenuModelAdapter*>(adapter_.get())->BuildMenu(item);
 
   menu_runner_ = std::make_unique<views::MenuRunner>(
diff --git a/shell/browser/ui/views/win_frame_view.cc b/shell/browser/ui/views/win_frame_view.cc
index 61f72e4aad8e0..55119cf1e4222 100644
--- a/shell/browser/ui/views/win_frame_view.cc
+++ b/shell/browser/ui/views/win_frame_view.cc
@@ -4,6 +4,7 @@
 
 #include "shell/browser/ui/views/win_frame_view.h"
 
+#include "base/win/windows_version.h"
 #include "shell/browser/native_window_views.h"
 #include "ui/views/widget/widget.h"
 #include "ui/views/win/hwnd_util.h"
diff --git a/shell/browser/ui/win/electron_desktop_window_tree_host_win.cc b/shell/browser/ui/win/electron_desktop_window_tree_host_win.cc
index 8fc9b230e696c..852de00a52b4f 100644
--- a/shell/browser/ui/win/electron_desktop_window_tree_host_win.cc
+++ b/shell/browser/ui/win/electron_desktop_window_tree_host_win.cc
@@ -4,7 +4,15 @@
 
 #include "shell/browser/ui/win/electron_desktop_window_tree_host_win.h"
 
+#include "base/win/windows_version.h"
+#include "electron/buildflags/buildflags.h"
+#include "shell/browser/ui/views/win_frame_view.h"
 #include "ui/base/win/hwnd_metrics.h"
+#include "ui/base/win/shell.h"
+
+#if BUILDFLAG(ENABLE_WIN_DARK_MODE_WINDOW_UI)
+#include "shell/browser/win/dark_mode.h"
+#endif
 
 namespace electron {
 
@@ -21,6 +29,15 @@ bool ElectronDesktopWindowTreeHostWin::PreHandleMSG(UINT message,
                                                     WPARAM w_param,
                                                     LPARAM l_param,
                                                     LRESULT* result) {
+#if BUILDFLAG(ENABLE_WIN_DARK_MODE_WINDOW_UI)
+  if (message == WM_NCCREATE) {
+    HWND const hwnd = GetAcceleratedWidget();
+    auto const theme_source =
+        ui::NativeTheme::GetInstanceForNativeUi()->theme_source();
+    win::SetDarkModeForWindow(hwnd, theme_source);
+  }
+#endif
+
   return native_window_view_->PreHandleMSG(message, w_param, l_param, result);
 }
 
@@ -36,18 +53,47 @@ bool ElectronDesktopWindowTreeHostWin::HasNativeFrame() const {
   // Since we never use chromium's titlebar implementation, we can just say
   // that we use a native titlebar. This will disable the repaint locking when
   // DWM composition is disabled.
-  return true;
+  // See also https://github.com/electron/electron/issues/1821.
+  return !ui::win::IsAeroGlassEnabled();
+}
+
+bool ElectronDesktopWindowTreeHostWin::GetDwmFrameInsetsInPixels(
+    gfx::Insets* insets) const {
+  // Set DWMFrameInsets to prevent maximized frameless window from bleeding
+  // into other monitors.
+  if (IsMaximized() && !native_window_view_->has_frame()) {
+    // This would be equivalent to calling:
+    // DwmExtendFrameIntoClientArea({0, 0, 0, 0});
+    //
+    // which means do not extend window frame into client area. It is almost
+    // a no-op, but it can tell Windows to not extend the window frame to be
+    // larger than current workspace.
+    //
+    // See also:
+    // https://devblogs.microsoft.com/oldnewthing/20150304-00/?p=44543
+    *insets = gfx::Insets();
+    return true;
+  }
+  return false;
 }
 
 bool ElectronDesktopWindowTreeHostWin::GetClientAreaInsets(
     gfx::Insets* insets,
     HMONITOR monitor) const {
+  // Windows by deafult extends the maximized window slightly larger than
+  // current workspace, for frameless window since the standard frame has been
+  // removed, the client area would then be drew outside current workspace.
+  //
+  // Indenting the client area can fix this behavior.
   if (IsMaximized() && !native_window_view_->has_frame()) {
-    // Windows automatically adds a standard width border to all sides when a
-    // window is maximized.
-    int frame_thickness = ui::GetFrameThickness(monitor) - 1;
-    *insets = gfx::Insets(frame_thickness, frame_thickness, frame_thickness,
-                          frame_thickness);
+    // The insets would be eventually passed to WM_NCCALCSIZE, which takes
+    // the metrics under the DPI of _main_ monitor instead of current moniotr.
+    //
+    // Please make sure you tested maximized frameless window under multiple
+    // monitors with different DPIs before changing this code.
+    const int thickness = ::GetSystemMetrics(SM_CXSIZEFRAME) +
+                          ::GetSystemMetrics(SM_CXPADDEDBORDER);
+    insets->Set(thickness, thickness, thickness, thickness);
     return true;
   }
   return false;
diff --git a/shell/browser/ui/win/electron_desktop_window_tree_host_win.h b/shell/browser/ui/win/electron_desktop_window_tree_host_win.h
index 9aa3b8fb11434..ef96175474e1e 100644
--- a/shell/browser/ui/win/electron_desktop_window_tree_host_win.h
+++ b/shell/browser/ui/win/electron_desktop_window_tree_host_win.h
@@ -27,6 +27,7 @@ class ElectronDesktopWindowTreeHostWin
                     LRESULT* result) override;
   bool ShouldPaintAsActive() const override;
   bool HasNativeFrame() const override;
+  bool GetDwmFrameInsetsInPixels(gfx::Insets* insets) const override;
   bool GetClientAreaInsets(gfx::Insets* insets,
                            HMONITOR monitor) const override;
 
diff --git a/shell/browser/ui/win/notify_icon_host.cc b/shell/browser/ui/win/notify_icon_host.cc
index 54ced5d7ac763..853d68a389d90 100755
--- a/shell/browser/ui/win/notify_icon_host.cc
+++ b/shell/browser/ui/win/notify_icon_host.cc
@@ -89,7 +89,7 @@ NotifyIcon* NotifyIconHost::CreateNotifyIcon(base::Optional<UUID> guid) {
   if (guid.has_value()) {
     for (NotifyIcons::const_iterator i(notify_icons_.begin());
          i != notify_icons_.end(); ++i) {
-      NotifyIcon* current_win_icon = static_cast<NotifyIcon*>(*i);
+      auto* current_win_icon = static_cast<NotifyIcon*>(*i);
       if (current_win_icon->guid() == guid.value()) {
         LOG(WARNING)
             << "Guid already in use. Existing tray entry will be replaced.";
@@ -97,7 +97,7 @@ NotifyIcon* NotifyIconHost::CreateNotifyIcon(base::Optional<UUID> guid) {
     }
   }
 
-  NotifyIcon* notify_icon =
+  auto* notify_icon =
       new NotifyIcon(this, NextIconId(), window_, kNotifyIconMessage,
                      guid.has_value() ? guid.value() : GUID_DEFAULT);
 
@@ -121,7 +121,7 @@ LRESULT CALLBACK NotifyIconHost::WndProcStatic(HWND hwnd,
                                                UINT message,
                                                WPARAM wparam,
                                                LPARAM lparam) {
-  NotifyIconHost* msg_wnd =
+  auto* msg_wnd =
       reinterpret_cast<NotifyIconHost*>(GetWindowLongPtr(hwnd, GWLP_USERDATA));
   if (msg_wnd)
     return msg_wnd->WndProc(hwnd, message, wparam, lparam);
@@ -137,7 +137,7 @@ LRESULT CALLBACK NotifyIconHost::WndProc(HWND hwnd,
     // We need to reset all of our icons because the taskbar went away.
     for (NotifyIcons::const_iterator i(notify_icons_.begin());
          i != notify_icons_.end(); ++i) {
-      NotifyIcon* win_icon = static_cast<NotifyIcon*>(*i);
+      auto* win_icon = static_cast<NotifyIcon*>(*i);
       win_icon->ResetIcon();
     }
     return TRUE;
@@ -147,7 +147,7 @@ LRESULT CALLBACK NotifyIconHost::WndProc(HWND hwnd,
     // Find the selected status icon.
     for (NotifyIcons::const_iterator i(notify_icons_.begin());
          i != notify_icons_.end(); ++i) {
-      NotifyIcon* current_win_icon = static_cast<NotifyIcon*>(*i);
+      auto* current_win_icon = static_cast<NotifyIcon*>(*i);
       if (current_win_icon->icon_id() == wparam) {
         win_icon = current_win_icon;
         break;
diff --git a/shell/browser/ui/win/taskbar_host.cc b/shell/browser/ui/win/taskbar_host.cc
index 717937b5855df..56fdc8668ca7b 100644
--- a/shell/browser/ui/win/taskbar_host.cc
+++ b/shell/browser/ui/win/taskbar_host.cc
@@ -114,11 +114,12 @@ bool TaskbarHost::SetThumbarButtons(HWND window,
 
   // Finally add them to taskbar.
   HRESULT r;
-  if (thumbar_buttons_added_)
+  if (thumbar_buttons_added_) {
     r = taskbar_->ThumbBarUpdateButtons(window, kMaxButtonsCount,
                                         thumb_buttons);
-  else
+  } else {
     r = taskbar_->ThumbBarAddButtons(window, kMaxButtonsCount, thumb_buttons);
+  }
 
   thumbar_buttons_added_ = true;
   last_buttons_ = buttons;
diff --git a/shell/browser/ui/win/taskbar_host.h b/shell/browser/ui/win/taskbar_host.h
index 886633ff2789e..f97070618944c 100644
--- a/shell/browser/ui/win/taskbar_host.h
+++ b/shell/browser/ui/win/taskbar_host.h
@@ -60,6 +60,8 @@ class TaskbarHost {
   // Called by the window that there is a button in thumbar clicked.
   bool HandleThumbarButtonEvent(int button_id);
 
+  void SetThumbarButtonsAdded(bool added) { thumbar_buttons_added_ = added; }
+
  private:
   // Initialize the taskbar object.
   bool InitializeTaskbar();
diff --git a/shell/browser/web_dialog_helper.cc b/shell/browser/web_dialog_helper.cc
index 9a72ef97a11b5..37ba8af752074 100644
--- a/shell/browser/web_dialog_helper.cc
+++ b/shell/browser/web_dialog_helper.cc
@@ -21,211 +21,20 @@
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
-#include "content/public/browser/web_contents_observer.h"
-#include "gin/dictionary.h"
-#include "net/base/directory_lister.h"
 #include "net/base/mime_util.h"
 #include "shell/browser/electron_browser_context.h"
+#include "shell/browser/file_select_helper.h"
+#include "shell/browser/javascript_environment.h"
 #include "shell/browser/native_window.h"
 #include "shell/browser/ui/file_dialog.h"
-#include "shell/common/gin_converters/callback_converter.h"
-#include "shell/common/gin_converters/file_path_converter.h"
-#include "shell/common/gin_helper/dictionary.h"
-#include "ui/shell_dialogs/selected_file_info.h"
 
 using blink::mojom::FileChooserFileInfo;
 using blink::mojom::FileChooserFileInfoPtr;
 using blink::mojom::FileChooserParams;
+using blink::mojom::NativeFileInfo;
 
 namespace {
 
-class FileSelectHelper : public base::RefCounted<FileSelectHelper>,
-                         public content::WebContentsObserver,
-                         public net::DirectoryLister::DirectoryListerDelegate {
- public:
-  REQUIRE_ADOPTION_FOR_REFCOUNTED_TYPE();
-
-  FileSelectHelper(content::RenderFrameHost* render_frame_host,
-                   std::unique_ptr<content::FileSelectListener> listener,
-                   blink::mojom::FileChooserParams::Mode mode)
-      : render_frame_host_(render_frame_host),
-        listener_(std::move(listener)),
-        mode_(mode) {
-    auto* web_contents =
-        content::WebContents::FromRenderFrameHost(render_frame_host);
-    content::WebContentsObserver::Observe(web_contents);
-  }
-
-  void ShowOpenDialog(const file_dialog::DialogSettings& settings) {
-    v8::Isolate* isolate = v8::Isolate::GetCurrent();
-    v8::HandleScope scope(isolate);
-    gin_helper::Promise<gin_helper::Dictionary> promise(isolate);
-
-    auto callback = base::BindOnce(&FileSelectHelper::OnOpenDialogDone, this);
-    ignore_result(promise.Then(std::move(callback)));
-
-    file_dialog::ShowOpenDialog(settings, std::move(promise));
-  }
-
-  void ShowSaveDialog(const file_dialog::DialogSettings& settings) {
-    v8::Isolate* isolate = v8::Isolate::GetCurrent();
-    v8::HandleScope scope(isolate);
-    gin_helper::Promise<gin_helper::Dictionary> promise(isolate);
-
-    auto callback = base::BindOnce(&FileSelectHelper::OnSaveDialogDone, this);
-    ignore_result(promise.Then(std::move(callback)));
-
-    file_dialog::ShowSaveDialog(settings, std::move(promise));
-  }
-
- private:
-  friend class base::RefCounted<FileSelectHelper>;
-
-  ~FileSelectHelper() override = default;
-
-  // net::DirectoryLister::DirectoryListerDelegate
-  void OnListFile(
-      const net::DirectoryLister::DirectoryListerData& data) override {
-    // We don't want to return directory paths, only file paths
-    if (data.info.IsDirectory())
-      return;
-
-    lister_paths_.push_back(data.path);
-  }
-
-  // net::DirectoryLister::DirectoryListerDelegate
-  void OnListDone(int error) override {
-    std::vector<FileChooserFileInfoPtr> file_info;
-    for (const auto& path : lister_paths_)
-      file_info.push_back(FileChooserFileInfo::NewNativeFile(
-          blink::mojom::NativeFileInfo::New(path, base::string16())));
-
-    OnFilesSelected(std::move(file_info), lister_base_dir_);
-    Release();
-  }
-
-  void EnumerateDirectory() {
-    // Ensure that this fn is only called once
-    DCHECK(!lister_);
-    DCHECK(!lister_base_dir_.empty());
-    DCHECK(lister_paths_.empty());
-
-    lister_ = std::make_unique<net::DirectoryLister>(
-        lister_base_dir_, net::DirectoryLister::NO_SORT_RECURSIVE, this);
-    lister_->Start();
-    // It is difficult for callers to know how long to keep a reference to
-    // this instance.  We AddRef() here to keep the instance alive after we
-    // return to the caller.  Once the directory lister is complete we
-    // Release() & at that point we run OnFilesSelected() which will
-    // deref the last reference held by the listener.
-    AddRef();
-  }
-
-  void OnOpenDialogDone(gin_helper::Dictionary result) {
-    std::vector<FileChooserFileInfoPtr> file_info;
-    bool canceled = true;
-    result.Get("canceled", &canceled);
-    // For certain file chooser modes (kUploadFolder) we need to do some async
-    // work before calling back to the listener.  In that particular case the
-    // listener is called from the directory enumerator.
-    bool ready_to_call_listener = false;
-
-    if (canceled) {
-      OnSelectionCancelled();
-    } else {
-      std::vector<base::FilePath> paths;
-      if (result.Get("filePaths", &paths)) {
-        // If we are uploading a folder we need to enumerate its contents
-        if (mode_ == FileChooserParams::Mode::kUploadFolder &&
-            paths.size() >= 1) {
-          lister_base_dir_ = paths[0];
-          EnumerateDirectory();
-        } else {
-          for (auto& path : paths) {
-            file_info.push_back(FileChooserFileInfo::NewNativeFile(
-                blink::mojom::NativeFileInfo::New(
-                    path, path.BaseName().AsUTF16Unsafe())));
-          }
-
-          ready_to_call_listener = true;
-        }
-
-        if (render_frame_host_ && !paths.empty()) {
-          auto* browser_context =
-              static_cast<electron::ElectronBrowserContext*>(
-                  render_frame_host_->GetProcess()->GetBrowserContext());
-          browser_context->prefs()->SetFilePath(prefs::kSelectFileLastDirectory,
-                                                paths[0].DirName());
-        }
-      }
-      // We should only call this if we have not cancelled the dialog
-      if (ready_to_call_listener)
-        OnFilesSelected(std::move(file_info), lister_base_dir_);
-    }
-  }
-
-  void OnSaveDialogDone(gin_helper::Dictionary result) {
-    std::vector<FileChooserFileInfoPtr> file_info;
-    bool canceled = true;
-    result.Get("canceled", &canceled);
-
-    if (canceled) {
-      OnSelectionCancelled();
-    } else {
-      base::FilePath path;
-      if (result.Get("filePath", &path)) {
-        file_info.push_back(FileChooserFileInfo::NewNativeFile(
-            blink::mojom::NativeFileInfo::New(
-                path, path.BaseName().AsUTF16Unsafe())));
-      }
-      // We should only call this if we have not cancelled the dialog
-      OnFilesSelected(std::move(file_info), base::FilePath());
-    }
-  }
-
-  void OnFilesSelected(std::vector<FileChooserFileInfoPtr> file_info,
-                       base::FilePath base_dir) {
-    if (listener_) {
-      listener_->FileSelected(std::move(file_info), base_dir, mode_);
-      listener_.reset();
-    }
-    render_frame_host_ = nullptr;
-  }
-
-  void OnSelectionCancelled() {
-    if (listener_) {
-      listener_->FileSelectionCanceled();
-      listener_.reset();
-    }
-    render_frame_host_ = nullptr;
-  }
-
-  // content::WebContentsObserver:
-  void RenderFrameHostChanged(content::RenderFrameHost* old_host,
-                              content::RenderFrameHost* new_host) override {
-    if (old_host == render_frame_host_)
-      render_frame_host_ = nullptr;
-  }
-
-  // content::WebContentsObserver:
-  void RenderFrameDeleted(content::RenderFrameHost* deleted_host) override {
-    if (deleted_host == render_frame_host_)
-      render_frame_host_ = nullptr;
-  }
-
-  // content::WebContentsObserver:
-  void WebContentsDestroyed() override { render_frame_host_ = nullptr; }
-
-  content::RenderFrameHost* render_frame_host_;
-  std::unique_ptr<content::FileSelectListener> listener_;
-  blink::mojom::FileChooserParams::Mode mode_;
-
-  // DirectoryLister-specific members
-  std::unique_ptr<net::DirectoryLister> lister_;
-  base::FilePath lister_base_dir_;
-  std::vector<base::FilePath> lister_paths_;
-};
-
 file_dialog::Filters GetFileTypesFromAcceptType(
     const std::vector<base::string16>& accept_types) {
   file_dialog::Filters filters;
@@ -304,18 +113,19 @@ WebDialogHelper::~WebDialogHelper() = default;
 void WebDialogHelper::RunFileChooser(
     content::RenderFrameHost* render_frame_host,
     std::unique_ptr<content::FileSelectListener> listener,
-    const blink::mojom::FileChooserParams& params) {
+    const FileChooserParams& params) {
   file_dialog::DialogSettings settings;
   settings.force_detached = offscreen_;
   settings.filters = GetFileTypesFromAcceptType(params.accept_types);
   settings.parent_window = window_;
   settings.title = base::UTF16ToUTF8(params.title);
 
-  auto file_select_helper = base::MakeRefCounted<FileSelectHelper>(
-      render_frame_host, std::move(listener), params.mode);
+  auto* fsc =
+      new FileSelectHelper(render_frame_host, std::move(listener), params.mode);
+
   if (params.mode == FileChooserParams::Mode::kSave) {
     settings.default_path = params.default_file_name;
-    file_select_helper->ShowSaveDialog(settings);
+    fsc->ShowSaveDialog(settings);
   } else {
     int flags = file_dialog::OPEN_DIALOG_CREATE_DIRECTORY;
     switch (params.mode) {
@@ -324,7 +134,6 @@ void WebDialogHelper::RunFileChooser(
         FALLTHROUGH;
       case FileChooserParams::Mode::kOpen:
         flags |= file_dialog::OPEN_DIALOG_OPEN_FILE;
-        flags |= file_dialog::OPEN_DIALOG_TREAT_PACKAGE_APP_AS_DIRECTORY;
         break;
       case FileChooserParams::Mode::kUploadFolder:
         flags |= file_dialog::OPEN_DIALOG_OPEN_DIRECTORY;
@@ -339,7 +148,7 @@ void WebDialogHelper::RunFileChooser(
                                 ->GetFilePath(prefs::kSelectFileLastDirectory)
                                 .Append(params.default_file_name);
     settings.properties = flags;
-    file_select_helper->ShowOpenDialog(settings);
+    fsc->ShowOpenDialog(settings);
   }
 }
 
@@ -355,7 +164,7 @@ void WebDialogHelper::EnumerateDirectory(
   std::vector<FileChooserFileInfoPtr> file_info;
   while (!(path = file_enum.Next()).empty()) {
     file_info.push_back(FileChooserFileInfo::NewNativeFile(
-        blink::mojom::NativeFileInfo::New(path, base::string16())));
+        NativeFileInfo::New(path, base::string16())));
   }
 
   listener->FileSelected(std::move(file_info), dir,
diff --git a/shell/browser/win/dark_mode.cc b/shell/browser/win/dark_mode.cc
new file mode 100644
index 0000000000000..c85bf18786c20
--- /dev/null
+++ b/shell/browser/win/dark_mode.cc
@@ -0,0 +1,180 @@
+// Copyright (c) 2020 Microsoft Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE-CHROMIUM file.
+
+#include "shell/browser/win/dark_mode.h"
+
+#include <dwmapi.h>  // DwmSetWindowAttribute()
+
+#include "base/files/file_path.h"
+#include "base/scoped_native_library.h"
+#include "base/win/pe_image.h"
+#include "base/win/win_util.h"
+#include "base/win/windows_version.h"
+
+// This namespace contains code originally from
+// https://github.com/ysc3839/win32-darkmode/
+// governed by the MIT license and (c) Richard Yu
+namespace {
+
+// 1903 18362
+enum PreferredAppMode { Default, AllowDark, ForceDark, ForceLight, Max };
+
+bool g_darkModeSupported = false;
+bool g_darkModeEnabled = false;
+DWORD g_buildNumber = 0;
+
+enum WINDOWCOMPOSITIONATTRIB {
+  WCA_USEDARKMODECOLORS = 26  // build 18875+
+};
+struct WINDOWCOMPOSITIONATTRIBDATA {
+  WINDOWCOMPOSITIONATTRIB Attrib;
+  PVOID pvData;
+  SIZE_T cbData;
+};
+
+using fnSetWindowCompositionAttribute =
+    BOOL(WINAPI*)(HWND hWnd, WINDOWCOMPOSITIONATTRIBDATA*);
+fnSetWindowCompositionAttribute _SetWindowCompositionAttribute = nullptr;
+
+bool IsHighContrast() {
+  HIGHCONTRASTW highContrast = {sizeof(highContrast)};
+  if (SystemParametersInfoW(SPI_GETHIGHCONTRAST, sizeof(highContrast),
+                            &highContrast, FALSE))
+    return highContrast.dwFlags & HCF_HIGHCONTRASTON;
+  return false;
+}
+
+void RefreshTitleBarThemeColor(HWND hWnd, bool dark) {
+  LONG ldark = dark;
+  if (g_buildNumber >= 20161) {
+    // DWMA_USE_IMMERSIVE_DARK_MODE = 20
+    DwmSetWindowAttribute(hWnd, 20, &ldark, sizeof dark);
+    return;
+  }
+  if (g_buildNumber >= 18363) {
+    auto data = WINDOWCOMPOSITIONATTRIBDATA{WCA_USEDARKMODECOLORS, &ldark,
+                                            sizeof ldark};
+    _SetWindowCompositionAttribute(hWnd, &data);
+    return;
+  }
+  DwmSetWindowAttribute(hWnd, 0x13, &ldark, sizeof ldark);
+}
+
+void InitDarkMode() {
+  // confirm that we're running on a version of Windows
+  // where the Dark Mode API is known
+  auto* os_info = base::win::OSInfo::GetInstance();
+  g_buildNumber = os_info->version_number().build;
+  auto const version = os_info->version();
+  if ((version < base::win::Version::WIN10_RS5) ||
+      (version > base::win::Version::WIN10_20H1)) {
+    return;
+  }
+
+  // load "SetWindowCompositionAttribute", used in RefreshTitleBarThemeColor()
+  _SetWindowCompositionAttribute =
+      reinterpret_cast<decltype(_SetWindowCompositionAttribute)>(
+          base::win::GetUser32FunctionPointer("SetWindowCompositionAttribute"));
+  if (_SetWindowCompositionAttribute == nullptr) {
+    return;
+  }
+
+  // load the dark mode functions from uxtheme.dll
+  // * RefreshImmersiveColorPolicyState()
+  // * ShouldAppsUseDarkMode()
+  // * AllowDarkModeForApp()
+  // * SetPreferredAppMode()
+  // * AllowDarkModeForApp() (build < 18362)
+  // * SetPreferredAppMode() (build >= 18362)
+
+  base::NativeLibrary uxtheme =
+      base::PinSystemLibrary(FILE_PATH_LITERAL("uxtheme.dll"));
+  if (!uxtheme) {
+    return;
+  }
+  auto ux_pei = base::win::PEImage(uxtheme);
+  auto get_ux_proc_from_ordinal = [&ux_pei](int ordinal, auto* setme) {
+    FARPROC proc = ux_pei.GetProcAddress(reinterpret_cast<LPCSTR>(ordinal));
+    *setme = reinterpret_cast<decltype(*setme)>(proc);
+  };
+
+  // ordinal 104
+  using fnRefreshImmersiveColorPolicyState = VOID(WINAPI*)();
+  fnRefreshImmersiveColorPolicyState _RefreshImmersiveColorPolicyState = {};
+  get_ux_proc_from_ordinal(104, &_RefreshImmersiveColorPolicyState);
+
+  // ordinal 132
+  using fnShouldAppsUseDarkMode = BOOL(WINAPI*)();
+  fnShouldAppsUseDarkMode _ShouldAppsUseDarkMode = {};
+  get_ux_proc_from_ordinal(132, &_ShouldAppsUseDarkMode);
+
+  // ordinal 135, in 1809
+  using fnAllowDarkModeForApp = BOOL(WINAPI*)(BOOL allow);
+  fnAllowDarkModeForApp _AllowDarkModeForApp = {};
+
+  // ordinal 135, in 1903
+  typedef PreferredAppMode(WINAPI *
+                           fnSetPreferredAppMode)(PreferredAppMode appMode);
+  fnSetPreferredAppMode _SetPreferredAppMode = {};
+
+  if (g_buildNumber < 18362) {
+    get_ux_proc_from_ordinal(135, &_AllowDarkModeForApp);
+  } else {
+    get_ux_proc_from_ordinal(135, &_SetPreferredAppMode);
+  }
+
+  // dark mode is supported iff we found the functions
+  g_darkModeSupported = _RefreshImmersiveColorPolicyState &&
+                        _ShouldAppsUseDarkMode &&
+                        (_AllowDarkModeForApp || _SetPreferredAppMode);
+  if (!g_darkModeSupported) {
+    return;
+  }
+
+  // initial setup: allow dark mode to be used
+  if (_AllowDarkModeForApp) {
+    _AllowDarkModeForApp(true);
+  } else if (_SetPreferredAppMode) {
+    _SetPreferredAppMode(AllowDark);
+  }
+  _RefreshImmersiveColorPolicyState();
+
+  // check to see if dark mode is currently enabled
+  g_darkModeEnabled = _ShouldAppsUseDarkMode() && !IsHighContrast();
+}
+
+}  // namespace
+
+namespace electron {
+
+void EnsureInitialized() {
+  static bool initialized = false;
+  if (!initialized) {
+    initialized = true;
+    ::InitDarkMode();
+  }
+}
+
+bool IsDarkPreferred(ui::NativeTheme::ThemeSource theme_source) {
+  switch (theme_source) {
+    case ui::NativeTheme::ThemeSource::kForcedLight:
+      return false;
+    case ui::NativeTheme::ThemeSource::kForcedDark:
+      return g_darkModeSupported;
+    case ui::NativeTheme::ThemeSource::kSystem:
+      return g_darkModeEnabled;
+  }
+}
+
+namespace win {
+
+void SetDarkModeForWindow(HWND hWnd,
+                          ui::NativeTheme::ThemeSource theme_source) {
+  EnsureInitialized();
+  RefreshTitleBarThemeColor(hWnd, IsDarkPreferred(theme_source));
+}
+
+}  // namespace win
+
+}  // namespace electron
diff --git a/shell/browser/win/dark_mode.h b/shell/browser/win/dark_mode.h
new file mode 100644
index 0000000000000..9e83d54ed7e7a
--- /dev/null
+++ b/shell/browser/win/dark_mode.h
@@ -0,0 +1,28 @@
+// Copyright (c) 2020 Microsoft Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE-CHROMIUM file.
+
+#ifndef SHELL_BROWSER_WIN_DARK_MODE_H_
+#define SHELL_BROWSER_WIN_DARK_MODE_H_
+
+#ifdef WIN32_LEAN_AND_MEAN
+#include <Windows.h>
+#else
+#define WIN32_LEAN_AND_MEAN
+#include <Windows.h>
+#undef WIN32_LEAN_AND_MEAN
+#endif
+
+#include "ui/native_theme/native_theme.h"
+
+namespace electron {
+
+namespace win {
+
+void SetDarkModeForWindow(HWND hWnd, ui::NativeTheme::ThemeSource theme_source);
+
+}  // namespace win
+
+}  // namespace electron
+
+#endif  // SHELL_BROWSER_WIN_DARK_MODE_H_
diff --git a/shell/common/api/api.mojom b/shell/common/api/api.mojom
index be8758f709803..427ddc1123306 100644
--- a/shell/common/api/api.mojom
+++ b/shell/common/api/api.mojom
@@ -56,6 +56,10 @@ interface ElectronBrowser {
       string channel,
       blink.mojom.CloneableMessage arguments) => (blink.mojom.CloneableMessage result);
 
+  // Informs underlying WebContents that first non-empty layout was performed
+  // by compositor.
+  OnFirstNonEmptyLayout();
+
   ReceivePostMessage(string channel, blink.mojom.TransferableMessage message);
 
   // Emits an event on |channel| from the ipcMain JavaScript object in the main
diff --git a/shell/common/api/electron_api_native_image.cc b/shell/common/api/electron_api_native_image.cc
index cd2faa86fcb22..ebe5414a12a93 100644
--- a/shell/common/api/electron_api_native_image.cc
+++ b/shell/common/api/electron_api_native_image.cc
@@ -180,13 +180,20 @@ v8::Local<v8::Value> NativeImage::ToBitmap(gin::Arguments* args) {
 
   const SkBitmap bitmap =
       image_.AsImageSkia().GetRepresentation(scale_factor).GetBitmap();
-  SkPixelRef* ref = bitmap.pixelRef();
-  if (!ref)
-    return node::Buffer::New(args->isolate(), 0).ToLocalChecked();
-  return node::Buffer::Copy(args->isolate(),
-                            reinterpret_cast<const char*>(ref->pixels()),
-                            bitmap.computeByteSize())
-      .ToLocalChecked();
+
+  SkImageInfo info =
+      SkImageInfo::MakeN32Premul(bitmap.width(), bitmap.height());
+
+  auto array_buffer =
+      v8::ArrayBuffer::New(args->isolate(), info.computeMinByteSize());
+  auto backing_store = array_buffer->GetBackingStore();
+  if (bitmap.readPixels(info, backing_store->Data(), info.minRowBytes(), 0,
+                        0)) {
+    return node::Buffer::New(args->isolate(), array_buffer, 0,
+                             info.computeMinByteSize())
+        .ToLocalChecked();
+  }
+  return node::Buffer::New(args->isolate(), 0).ToLocalChecked();
 }
 
 v8::Local<v8::Value> NativeImage::ToJPEG(v8::Isolate* isolate, int quality) {
@@ -257,7 +264,11 @@ gfx::Size NativeImage::GetSize(const base::Optional<float> scale_factor) {
 
 std::vector<float> NativeImage::GetScaleFactors() {
   gfx::ImageSkia image_skia = image_.AsImageSkia();
-  return image_skia.GetSupportedScales();
+  std::vector<float> scale_factors;
+  for (const auto& rep : image_skia.image_reps()) {
+    scale_factors.push_back(rep.scale());
+  }
+  return scale_factors;
 }
 
 float NativeImage::GetAspectRatio(const base::Optional<float> scale_factor) {
@@ -376,18 +387,20 @@ gin::Handle<NativeImage> NativeImage::Create(v8::Isolate* isolate,
 gin::Handle<NativeImage> NativeImage::CreateFromPNG(v8::Isolate* isolate,
                                                     const char* buffer,
                                                     size_t length) {
-  gfx::Image image = gfx::Image::CreateFrom1xPNGBytes(
-      reinterpret_cast<const unsigned char*>(buffer), length);
-  return Create(isolate, image);
+  gfx::ImageSkia image_skia;
+  electron::util::AddImageSkiaRepFromPNG(
+      &image_skia, reinterpret_cast<const unsigned char*>(buffer), length, 1.0);
+  return Create(isolate, gfx::Image(image_skia));
 }
 
 // static
 gin::Handle<NativeImage> NativeImage::CreateFromJPEG(v8::Isolate* isolate,
                                                      const char* buffer,
                                                      size_t length) {
-  gfx::Image image = gfx::ImageFrom1xJPEGEncodedData(
-      reinterpret_cast<const unsigned char*>(buffer), length);
-  return Create(isolate, image);
+  gfx::ImageSkia image_skia;
+  electron::util::AddImageSkiaRepFromJPEG(
+      &image_skia, reinterpret_cast<const unsigned char*>(buffer), length, 1.0);
+  return Create(isolate, gfx::Image(image_skia));
 }
 
 // static
diff --git a/shell/common/api/electron_api_v8_util.cc b/shell/common/api/electron_api_v8_util.cc
index 87af369d83fa0..ae1aed0472676 100644
--- a/shell/common/api/electron_api_v8_util.cc
+++ b/shell/common/api/electron_api_v8_util.cc
@@ -127,9 +127,9 @@ void ClearWeaklyTrackedValues() {
 
 std::vector<v8::Local<v8::Value>> GetWeaklyTrackedValues(v8::Isolate* isolate) {
   std::vector<v8::Local<v8::Value>> locals;
-  for (size_t i = 0; i < weakly_tracked_values.size(); i++) {
-    if (!weakly_tracked_values[i].IsEmpty())
-      locals.push_back(weakly_tracked_values[i].Get(isolate));
+  for (const auto& value : weakly_tracked_values) {
+    if (!value.IsEmpty())
+      locals.push_back(value.Get(isolate));
   }
   return locals;
 }
diff --git a/shell/common/api/electron_bindings.cc b/shell/common/api/electron_bindings.cc
index d078f37700512..0e3360c57a81b 100644
--- a/shell/common/api/electron_bindings.cc
+++ b/shell/common/api/electron_bindings.cc
@@ -56,14 +56,12 @@ void V8FatalErrorCallback(const char* location, const char* message) {
 }  // namespace
 
 ElectronBindings::ElectronBindings(uv_loop_t* loop) {
-  uv_async_init(loop, &call_next_tick_async_, OnCallNextTick);
-  call_next_tick_async_.data = this;
+  uv_async_init(loop, call_next_tick_async_.get(), OnCallNextTick);
+  call_next_tick_async_.get()->data = this;
   metrics_ = base::ProcessMetrics::CreateCurrentProcessMetrics();
 }
 
-ElectronBindings::~ElectronBindings() {
-  uv_close(reinterpret_cast<uv_handle_t*>(&call_next_tick_async_), nullptr);
-}
+ElectronBindings::~ElectronBindings() {}
 
 // static
 void ElectronBindings::BindProcess(v8::Isolate* isolate,
@@ -131,16 +129,13 @@ void ElectronBindings::ActivateUVLoop(v8::Isolate* isolate) {
     return;
 
   pending_next_ticks_.push_back(env);
-  uv_async_send(&call_next_tick_async_);
+  uv_async_send(call_next_tick_async_.get());
 }
 
 // static
 void ElectronBindings::OnCallNextTick(uv_async_t* handle) {
-  ElectronBindings* self = static_cast<ElectronBindings*>(handle->data);
-  for (std::list<node::Environment*>::const_iterator it =
-           self->pending_next_ticks_.begin();
-       it != self->pending_next_ticks_.end(); ++it) {
-    node::Environment* env = *it;
+  auto* self = static_cast<ElectronBindings*>(handle->data);
+  for (auto* env : self->pending_next_ticks_) {
     gin_helper::Locker locker(env->isolate());
     v8::Context::Scope context_scope(env->context());
     node::InternalCallbackScope scope(
diff --git a/shell/common/api/electron_bindings.h b/shell/common/api/electron_bindings.h
index d489d3feb6390..79a68fcd5a2b2 100644
--- a/shell/common/api/electron_bindings.h
+++ b/shell/common/api/electron_bindings.h
@@ -14,6 +14,7 @@
 #include "base/process/process_metrics.h"
 #include "base/strings/string16.h"
 #include "shell/common/gin_helper/promise.h"
+#include "shell/common/node_bindings.h"
 #include "uv.h"  // NOLINT(build/include_directory)
 
 namespace gin_helper {
@@ -74,7 +75,7 @@ class ElectronBindings {
       bool success,
       std::unique_ptr<memory_instrumentation::GlobalMemoryDump> dump);
 
-  uv_async_t call_next_tick_async_;
+  UvHandle<uv_async_t> call_next_tick_async_;
   std::list<node::Environment*> pending_next_ticks_;
   std::unique_ptr<base::ProcessMetrics> metrics_;
 
diff --git a/shell/common/api/features.cc b/shell/common/api/features.cc
index 28808a72fb057..d030c52646ac2 100644
--- a/shell/common/api/features.cc
+++ b/shell/common/api/features.cc
@@ -57,6 +57,10 @@ bool IsPictureInPictureEnabled() {
   return BUILDFLAG(ENABLE_PICTURE_IN_PICTURE);
 }
 
+bool IsWinDarkModeWindowUiEnabled() {
+  return BUILDFLAG(ENABLE_WIN_DARK_MODE_WINDOW_UI);
+}
+
 bool IsComponentBuild() {
 #if defined(COMPONENT_BUILD)
   return true;
@@ -84,6 +88,7 @@ void Initialize(v8::Local<v8::Object> exports,
   dict.SetMethod("isPictureInPictureEnabled", &IsPictureInPictureEnabled);
   dict.SetMethod("isComponentBuild", &IsComponentBuild);
   dict.SetMethod("isExtensionsEnabled", &IsExtensionsEnabled);
+  dict.SetMethod("isWinDarkModeWindowUiEnabled", &IsWinDarkModeWindowUiEnabled);
 }
 
 }  // namespace
diff --git a/shell/common/api/remote/remote_callback_freer.cc b/shell/common/api/remote/remote_callback_freer.cc
index 40dd4a706d6cb..e61c38ae6cabd 100644
--- a/shell/common/api/remote/remote_callback_freer.cc
+++ b/shell/common/api/remote/remote_callback_freer.cc
@@ -17,22 +17,25 @@ namespace electron {
 // static
 void RemoteCallbackFreer::BindTo(v8::Isolate* isolate,
                                  v8::Local<v8::Object> target,
+                                 int process_id,
                                  int frame_id,
                                  const std::string& context_id,
                                  int object_id,
                                  content::WebContents* web_contents) {
-  new RemoteCallbackFreer(isolate, target, frame_id, context_id, object_id,
-                          web_contents);
+  new RemoteCallbackFreer(isolate, target, process_id, frame_id, context_id,
+                          object_id, web_contents);
 }
 
 RemoteCallbackFreer::RemoteCallbackFreer(v8::Isolate* isolate,
                                          v8::Local<v8::Object> target,
+                                         int process_id,
                                          int frame_id,
                                          const std::string& context_id,
                                          int object_id,
                                          content::WebContents* web_contents)
     : ObjectLifeMonitor(isolate, target),
       content::WebContentsObserver(web_contents),
+      process_id_(process_id),
       frame_id_(frame_id),
       context_id_(context_id),
       object_id_(object_id) {}
@@ -40,16 +43,14 @@ RemoteCallbackFreer::RemoteCallbackFreer(v8::Isolate* isolate,
 RemoteCallbackFreer::~RemoteCallbackFreer() = default;
 
 void RemoteCallbackFreer::RunDestructor() {
-  auto frames = web_contents()->GetAllFrames();
-  auto iter = std::find_if(frames.begin(), frames.end(), [this](auto* f) {
-    return f->GetRoutingID() == frame_id_;
-  });
-
-  if (iter != frames.end() && (*iter)->IsRenderFrameLive()) {
-    mojo::AssociatedRemote<mojom::ElectronRenderer> electron_renderer;
-    (*iter)->GetRemoteAssociatedInterfaces()->GetInterface(&electron_renderer);
-    electron_renderer->DereferenceRemoteJSCallback(context_id_, object_id_);
-  }
+  auto* rfh = content::RenderFrameHost::FromID(process_id_, frame_id_);
+  if (!rfh || !rfh->IsRenderFrameLive() ||
+      content::WebContents::FromRenderFrameHost(rfh) != web_contents())
+    return;
+
+  mojo::AssociatedRemote<mojom::ElectronRenderer> electron_renderer;
+  rfh->GetRemoteAssociatedInterfaces()->GetInterface(&electron_renderer);
+  electron_renderer->DereferenceRemoteJSCallback(context_id_, object_id_);
 
   Observe(nullptr);
 }
diff --git a/shell/common/api/remote/remote_callback_freer.h b/shell/common/api/remote/remote_callback_freer.h
index 7e9d95a2e06d3..6c43a162808ef 100644
--- a/shell/common/api/remote/remote_callback_freer.h
+++ b/shell/common/api/remote/remote_callback_freer.h
@@ -17,6 +17,7 @@ class RemoteCallbackFreer : public ObjectLifeMonitor,
  public:
   static void BindTo(v8::Isolate* isolate,
                      v8::Local<v8::Object> target,
+                     int process_id,
                      int frame_id,
                      const std::string& context_id,
                      int object_id,
@@ -25,6 +26,7 @@ class RemoteCallbackFreer : public ObjectLifeMonitor,
  protected:
   RemoteCallbackFreer(v8::Isolate* isolate,
                       v8::Local<v8::Object> target,
+                      int process_id,
                       int frame_id,
                       const std::string& context_id,
                       int object_id,
@@ -37,6 +39,7 @@ class RemoteCallbackFreer : public ObjectLifeMonitor,
   void RenderViewDeleted(content::RenderViewHost*) override;
 
  private:
+  int process_id_;
   int frame_id_;
   std::string context_id_;
   int object_id_;
diff --git a/shell/common/extensions/api/_permission_features.json b/shell/common/extensions/api/_permission_features.json
index 6f0aacd586037..44d71cc852ef8 100644
--- a/shell/common/extensions/api/_permission_features.json
+++ b/shell/common/extensions/api/_permission_features.json
@@ -5,5 +5,65 @@
       "extension"
     ],
     "location": "component"
-  }
-}
+  },
+  "management": [
+    {
+      "channel": "stable",
+      "extension_types": [
+        "extension",
+        "legacy_packaged_app"
+      ]
+    },
+    {
+      "channel": "stable",
+      "extension_types": [
+        "platform_app"
+      ],
+      "whitelist": [
+        "AE27D69DBE571F4B1694F05C89B710C646792231", // Published ADT
+        // TODO(grv): clean up once Apps developer tool is published.
+        "5107DE9024C329EEA9C9A72D94C16723790C6422", // Apps Developer Tool.
+        "8C0B1873FFFB65E4D0F4D772879F7304CEF125C2", // Apps Editor old.
+        "FA0501B579070BB9CBD4FCAEC8CB0EDF22BA2F04", // Apps Editor published.
+        "EE17C698905F7F2E6DDC87C9C30F11E164C829F4", // Watchdog (Activity Log)
+        "90113DA9516526D24DAF156C629CC41C049E8882", // Watchdog Test Version
+        "4A4EA121622FCA3D78ED2AB534197F43D7189EE0", // Spark nightly build.
+        "9FDE6E7F06FCFA11D9A05041C7FF6D8AE662F5D1", // Spark release.
+        "50B4A905D522C06E27CA6D099E3E54BDA1F152C5", // Spark Beta channel.
+        "BA0C8BB92084C9741312D90D3EA882526853455F", // Spark dev channel.
+        "5F57A9AE8DFF5D6BB09DF8606270402612E871E5", // http://crbug.com/422624
+        "46578A13607D38F1DC8E280C4F499FB0A2F9565C", // http://crbug.com/819404
+        "898FB5A39687D210766B8998BA4530B99C9E6586", // http://crbug.com/819404
+        "82F30B65397BC3E4ADE627BBD857AB8A58210648", // http://crbug.com/819404
+        "C74B2AF138F9EDECD04D0965AB36CA66C8290466" // http://crbug.com/957772
+      ]
+    },
+    {
+      "channel": "stable",
+      "extension_types": [
+        "hosted_app"
+      ],
+      "whitelist": [
+        "B44D08FD98F1523ED5837D78D0A606EA9D6206E5" // Web Store
+      ]
+    },
+    {
+      "channel": "stable",
+      "extension_types": [
+        "platform_app"
+      ],
+      "session_types": [
+        "kiosk"
+      ]
+    },
+    {
+      "channel": "stable",
+      "dependencies": [
+        "behavior:imprivata_login_screen_extension"
+      ],
+      "extension_types": [
+        "login_screen_extension"
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/shell/common/extensions/electron_extensions_api_provider.cc b/shell/common/extensions/electron_extensions_api_provider.cc
index e02aee3f2df07..8acf2c3875dab 100644
--- a/shell/common/extensions/electron_extensions_api_provider.cc
+++ b/shell/common/extensions/electron_extensions_api_provider.cc
@@ -38,6 +38,7 @@ constexpr APIPermissionInfo::InitInfo permissions_to_register[] = {
          APIPermissionInfo::kFlagInternal},
     {APIPermission::kResourcesPrivate, "resourcesPrivate",
      APIPermissionInfo::kFlagCannotBeOptional},
+    {APIPermission::kManagement, "management"},
 };
 base::span<const APIPermissionInfo::InitInfo> GetPermissionInfos() {
   return base::make_span(permissions_to_register);
diff --git a/shell/common/extensions/electron_extensions_client.cc b/shell/common/extensions/electron_extensions_client.cc
index a2957f72debea..b6dcd3db8a788 100644
--- a/shell/common/extensions/electron_extensions_client.cc
+++ b/shell/common/extensions/electron_extensions_client.cc
@@ -130,9 +130,7 @@ const GURL& ElectronExtensionsClient::GetWebstoreUpdateURL() const {
 }
 
 bool ElectronExtensionsClient::IsBlacklistUpdateURL(const GURL& url) const {
-  // TODO(rockot): Maybe we want to do something else here. For now we accept
-  // any URL as a blacklist URL because we don't really care.
-  return true;
+  return false;
 }
 
 }  // namespace electron
diff --git a/shell/common/gin_converters/blink_converter.cc b/shell/common/gin_converters/blink_converter.cc
index be696f44d5142..de8ddba0ddc39 100644
--- a/shell/common/gin_converters/blink_converter.cc
+++ b/shell/common/gin_converters/blink_converter.cc
@@ -207,9 +207,9 @@ bool Converter<blink::WebKeyboardEvent>::FromV8(v8::Isolate* isolate,
     size_t text_length_cap = blink::WebKeyboardEvent::kTextLengthCap;
     base::string16 text16 = base::UTF8ToUTF16(str);
 
-    memset(out->text, 0, text_length_cap);
-    memset(out->unmodified_text, 0, text_length_cap);
-    for (size_t i = 0; i < std::min(text_length_cap, text16.size()); ++i) {
+    std::fill_n(out->text, text_length_cap, 0);
+    std::fill_n(out->unmodified_text, text_length_cap, 0);
+    for (size_t i = 0; i < std::min(text_length_cap - 1, text16.size()); ++i) {
       out->text[i] = text16[i];
       out->unmodified_text[i] = text16[i];
     }
diff --git a/shell/common/gin_converters/guid_converter.h b/shell/common/gin_converters/guid_converter.h
index 6df8e132cbffd..a5e56ba4d7651 100644
--- a/shell/common/gin_converters/guid_converter.h
+++ b/shell/common/gin_converters/guid_converter.h
@@ -33,7 +33,7 @@ struct Converter<UUID> {
 
     UUID uid;
 
-    if (guid.length() > 0) {
+    if (!guid.empty()) {
       unsigned char* uid_cstr = (unsigned char*)guid.c_str();
       RPC_STATUS result = UuidFromStringA(uid_cstr, &uid);
       if (result == RPC_S_INVALID_STRING_UUID) {
diff --git a/shell/common/gin_helper/callback.cc b/shell/common/gin_helper/callback.cc
index 6258211bc3884..a1c257c982f4f 100644
--- a/shell/common/gin_helper/callback.cc
+++ b/shell/common/gin_helper/callback.cc
@@ -55,7 +55,7 @@ void CallTranslater(v8::Local<v8::External> external,
     }
   }
 
-  TranslaterHolder* holder = static_cast<TranslaterHolder*>(external->Value());
+  auto* holder = static_cast<TranslaterHolder*>(external->Value());
   holder->translater.Run(args);
 
   // Free immediately for one-time callback.
diff --git a/shell/common/gin_helper/event_emitter.cc b/shell/common/gin_helper/event_emitter.cc
index ebb52d2ac90ca..710147b54f156 100644
--- a/shell/common/gin_helper/event_emitter.cc
+++ b/shell/common/gin_helper/event_emitter.cc
@@ -5,6 +5,7 @@
 #include "shell/common/gin_helper/event_emitter.h"
 
 #include "content/public/browser/render_frame_host.h"
+#include "content/public/browser/render_process_host.h"
 #include "shell/browser/api/event.h"
 #include "shell/common/gin_helper/dictionary.h"
 #include "shell/common/gin_helper/object_template_builder.h"
@@ -67,8 +68,10 @@ v8::Local<v8::Object> CreateNativeEvent(
   Dictionary dict(isolate, event);
   dict.Set("sender", sender);
   // Should always set frameId even when callback is null.
-  if (frame)
+  if (frame) {
     dict.Set("frameId", frame->GetRoutingID());
+    dict.Set("processId", frame->GetProcess()->GetID());
+  }
   return event;
 }
 
diff --git a/shell/common/gin_helper/wrappable.cc b/shell/common/gin_helper/wrappable.cc
index 7b288e9ac6311..e5fe390e15ebc 100644
--- a/shell/common/gin_helper/wrappable.cc
+++ b/shell/common/gin_helper/wrappable.cc
@@ -64,8 +64,7 @@ void WrappableBase::InitWith(v8::Isolate* isolate,
 // static
 void WrappableBase::FirstWeakCallback(
     const v8::WeakCallbackInfo<WrappableBase>& data) {
-  WrappableBase* wrappable =
-      static_cast<WrappableBase*>(data.GetInternalField(0));
+  auto* wrappable = static_cast<WrappableBase*>(data.GetInternalField(0));
   if (wrappable) {
     wrappable->wrapper_.Reset();
     data.SetSecondPassCallback(SecondWeakCallback);
@@ -75,8 +74,7 @@ void WrappableBase::FirstWeakCallback(
 // static
 void WrappableBase::SecondWeakCallback(
     const v8::WeakCallbackInfo<WrappableBase>& data) {
-  WrappableBase* wrappable =
-      static_cast<WrappableBase*>(data.GetInternalField(0));
+  auto* wrappable = static_cast<WrappableBase*>(data.GetInternalField(0));
   if (wrappable)
     delete wrappable;
 }
diff --git a/shell/common/node_bindings.cc b/shell/common/node_bindings.cc
index 863aa3fe47d2e..4d558bf62f4ea 100644
--- a/shell/common/node_bindings.cc
+++ b/shell/common/node_bindings.cc
@@ -32,6 +32,7 @@
 #include "shell/common/gin_helper/microtasks_scope.h"
 #include "shell/common/mac/main_application_bundle.h"
 #include "shell/common/node_includes.h"
+#include "third_party/blink/renderer/bindings/core/v8/v8_initializer.h"  // nogncheck
 
 #define ELECTRON_BUILTIN_MODULES(V)      \
   V(electron_browser_app)                \
@@ -97,24 +98,26 @@ namespace {
 
 void stop_and_close_uv_loop(uv_loop_t* loop) {
   uv_stop(loop);
-  int error = uv_loop_close(loop);
-
-  while (error) {
-    uv_run(loop, UV_RUN_DEFAULT);
-    uv_stop(loop);
-    uv_walk(
-        loop,
-        [](uv_handle_t* handle, void*) {
-          if (!uv_is_closing(handle)) {
-            uv_close(handle, nullptr);
-          }
-        },
-        nullptr);
-    uv_run(loop, UV_RUN_DEFAULT);
-    error = uv_loop_close(loop);
-  }
 
-  DCHECK_EQ(error, 0);
+  auto const ensure_closing = [](uv_handle_t* handle, void*) {
+    // We should be using the UvHandle wrapper everywhere, in which case
+    // all handles should already be in a closing state...
+    DCHECK(uv_is_closing(handle));
+    // ...but if a raw handle got through, through, do the right thing anyway
+    if (!uv_is_closing(handle)) {
+      uv_close(handle, nullptr);
+    }
+  };
+
+  uv_walk(loop, ensure_closing, nullptr);
+
+  // All remaining handles are in a closing state now.
+  // Pump the event loop so that they can finish closing.
+  for (;;)
+    if (uv_run(loop, UV_RUN_DEFAULT) == 0)
+      break;
+
+  DCHECK_EQ(0, uv_loop_alive(loop));
 }
 
 bool g_is_initialized = false;
@@ -132,6 +135,23 @@ bool IsPackagedApp() {
 #endif
 }
 
+void ErrorMessageListener(v8::Local<v8::Message> message,
+                          v8::Local<v8::Value> data) {
+  v8::Isolate* isolate = v8::Isolate::GetCurrent();
+  node::Environment* env = node::Environment::GetCurrent(isolate);
+
+  // TODO(codebytere): properly emit the after() hooks now
+  // that the exception has been handled.
+  // See node/lib/internal/process/execution.js#L176-L180
+
+  // Ensure that the async id stack is properly cleared so the async
+  // hook stack does not become corrupted.
+
+  if (env) {
+    env->async_hooks()->clear_async_id_stack();
+  }
+}
+
 // Initialize Node.js cli options to pass to Node.js
 // See https://nodejs.org/api/cli.html#cli_options
 void SetNodeCliFlags() {
@@ -223,9 +243,18 @@ void SetNodeOptions(base::Environment* env) {
 
 bool AllowWasmCodeGenerationCallback(v8::Local<v8::Context> context,
                                      v8::Local<v8::String>) {
-  v8::Local<v8::Value> wasm_code_gen = context->GetEmbedderData(
-      node::ContextEmbedderIndex::kAllowWasmCodeGeneration);
-  return wasm_code_gen->IsUndefined() || wasm_code_gen->IsTrue();
+  // If we're running with contextIsolation enabled in the renderer process,
+  // fall back to Blink's logic.
+  v8::Isolate* isolate = context->GetIsolate();
+  if (node::Environment::GetCurrent(isolate) == nullptr) {
+    if (gin_helper::Locker::IsBrowserProcess())
+      return false;
+    return blink::V8Initializer::WasmCodeGenerationCheckCallbackInMainThread(
+        context, v8::String::Empty(isolate));
+  }
+
+  return node::Environment::AllowWasmCodeGenerationCallback(
+      context, v8::String::Empty(isolate));
 }
 
 }  // namespace
@@ -282,7 +311,7 @@ NodeBindings::~NodeBindings() {
 
   // Clear uv.
   uv_sem_destroy(&embed_sem_);
-  uv_close(reinterpret_cast<uv_handle_t*>(&dummy_uv_handle_), nullptr);
+  dummy_uv_handle_.reset();
 
   // Clean up worker loop
   if (in_worker_loop())
@@ -391,9 +420,24 @@ node::Environment* NodeBindings::CreateEnvironment(
   std::unique_ptr<const char*[]> c_argv = StringVectorToArgArray(args);
   isolate_data_ =
       node::CreateIsolateData(context->GetIsolate(), uv_loop_, platform);
-  node::Environment* env = node::CreateEnvironment(
-      isolate_data_, context, args.size(), c_argv.get(), 0, nullptr);
-  DCHECK(env);
+
+  node::Environment* env;
+  if (browser_env_ != BrowserEnvironment::BROWSER) {
+    v8::TryCatch try_catch(context->GetIsolate());
+    env = node::CreateEnvironment(isolate_data_, context, args.size(),
+                                  c_argv.get(), 0, nullptr);
+    DCHECK(env);
+    // This will only be caught when something has gone terrible wrong as all
+    // electron scripts are wrapped in a try {} catch {} in run-compiler.js
+    if (try_catch.HasCaught()) {
+      LOG(ERROR) << "Failed to initialize node environment in process: "
+                 << process_type;
+    }
+  } else {
+    env = node::CreateEnvironment(isolate_data_, context, args.size(),
+                                  c_argv.get(), 0, nullptr);
+    DCHECK(env);
+  }
 
   // Clean up the global _noBrowserGlobals that we unironically injected into
   // the global scope
@@ -411,6 +455,12 @@ node::Environment* NodeBindings::CreateEnvironment(
     // Match Blink's behavior by allowing microtasks invocation to be controlled
     // by MicrotasksScope objects.
     context->GetIsolate()->SetMicrotasksPolicy(v8::MicrotasksPolicy::kScoped);
+
+    // Isolate message listeners are additive (you can add multiple), so instead
+    // we add an extra one here to ensure that the async hook stack is properly
+    // cleared when errors are thrown.
+    context->GetIsolate()->AddMessageListenerWithErrorLevel(
+        ErrorMessageListener, v8::Isolate::kMessageError);
   }
 
   // This needs to be called before the inspector is initialized.
@@ -443,9 +493,21 @@ void NodeBindings::LoadEnvironment(node::Environment* env) {
 }
 
 void NodeBindings::PrepareMessageLoop() {
+#if !defined(OS_WIN)
+  int handle = uv_backend_fd(uv_loop_);
+#else
+  HANDLE handle = uv_loop_->iocp;
+#endif
+
+  // If the backend fd hasn't changed, don't proceed.
+  if (handle == handle_)
+    return;
+
+  handle_ = handle;
+
   // Add dummy handle for libuv, otherwise libuv would quit when there is
   // nothing to do.
-  uv_async_init(uv_loop_, &dummy_uv_handle_, nullptr);
+  uv_async_init(uv_loop_, dummy_uv_handle_.get(), nullptr);
 
   // Start worker that will interrupt main loop when having uv events.
   uv_sem_init(&embed_sem_, 0);
@@ -502,13 +564,12 @@ void NodeBindings::WakeupMainThread() {
 }
 
 void NodeBindings::WakeupEmbedThread() {
-  if (!in_worker_loop())
-    uv_async_send(&dummy_uv_handle_);
+  uv_async_send(dummy_uv_handle_.get());
 }
 
 // static
 void NodeBindings::EmbedThreadRunner(void* arg) {
-  NodeBindings* self = static_cast<NodeBindings*>(arg);
+  auto* self = static_cast<NodeBindings*>(arg);
 
   while (true) {
     // Wait for the main loop to deal with events.
diff --git a/shell/common/node_bindings.h b/shell/common/node_bindings.h
index bf737a51ddffb..eba92bda3da4e 100644
--- a/shell/common/node_bindings.h
+++ b/shell/common/node_bindings.h
@@ -5,6 +5,8 @@
 #ifndef SHELL_COMMON_NODE_BINDINGS_H_
 #define SHELL_COMMON_NODE_BINDINGS_H_
 
+#include <type_traits>
+
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
@@ -24,6 +26,54 @@ class IsolateData;
 
 namespace electron {
 
+// A helper class to manage uv_handle_t types, e.g. uv_async_t.
+//
+// As per the uv docs: "uv_close() MUST be called on each handle before
+// memory is released. Moreover, the memory can only be released in
+// close_cb or after it has returned." This class encapsulates the work
+// needed to follow those requirements.
+template <typename T,
+          typename std::enable_if<
+              // these are the C-style 'subclasses' of uv_handle_t
+              std::is_same<T, uv_async_t>::value ||
+              std::is_same<T, uv_check_t>::value ||
+              std::is_same<T, uv_fs_event_t>::value ||
+              std::is_same<T, uv_fs_poll_t>::value ||
+              std::is_same<T, uv_idle_t>::value ||
+              std::is_same<T, uv_pipe_t>::value ||
+              std::is_same<T, uv_poll_t>::value ||
+              std::is_same<T, uv_prepare_t>::value ||
+              std::is_same<T, uv_process_t>::value ||
+              std::is_same<T, uv_signal_t>::value ||
+              std::is_same<T, uv_stream_t>::value ||
+              std::is_same<T, uv_tcp_t>::value ||
+              std::is_same<T, uv_timer_t>::value ||
+              std::is_same<T, uv_tty_t>::value ||
+              std::is_same<T, uv_udp_t>::value>::type* = nullptr>
+class UvHandle {
+ public:
+  UvHandle() : t_(new T) {}
+  ~UvHandle() { reset(); }
+  T* get() { return t_; }
+  uv_handle_t* handle() { return reinterpret_cast<uv_handle_t*>(t_); }
+
+  void reset() {
+    auto* h = handle();
+    if (h != nullptr) {
+      DCHECK_EQ(0, uv_is_closing(h));
+      uv_close(h, OnClosed);
+      t_ = nullptr;
+    }
+  }
+
+ private:
+  static void OnClosed(uv_handle_t* handle) {
+    delete reinterpret_cast<T*>(handle);
+  }
+
+  T* t_ = {};
+};
+
 class NodeBindings {
  public:
   enum class BrowserEnvironment { BROWSER, RENDERER, WORKER };
@@ -95,7 +145,7 @@ class NodeBindings {
   uv_loop_t worker_loop_;
 
   // Dummy handle to make uv's loop not quit.
-  uv_async_t dummy_uv_handle_;
+  UvHandle<uv_async_t> dummy_uv_handle_;
 
   // Thread for polling events.
   uv_thread_t embed_thread_;
@@ -109,6 +159,12 @@ class NodeBindings {
   // Isolate data used in creating the environment
   node::IsolateData* isolate_data_ = nullptr;
 
+#if defined(OS_WIN)
+  HANDLE handle_;
+#else
+  int handle_ = -1;
+#endif
+
   base::WeakPtrFactory<NodeBindings> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NodeBindings);
diff --git a/shell/common/node_util.cc b/shell/common/node_util.cc
index 777732b81bac9..ab4207d5909d5 100644
--- a/shell/common/node_util.cc
+++ b/shell/common/node_util.cc
@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "shell/common/node_util.h"
+#include "base/logging.h"
 #include "shell/common/node_includes.h"
 #include "third_party/electron_node/src/node_native_module_env.h"
 
@@ -17,6 +18,7 @@ v8::MaybeLocal<v8::Value> CompileAndCall(
     std::vector<v8::Local<v8::Value>>* arguments,
     node::Environment* optional_env) {
   v8::Isolate* isolate = context->GetIsolate();
+  v8::TryCatch try_catch(isolate);
   v8::MaybeLocal<v8::Function> compiled =
       node::native_module::NativeModuleEnv::LookupAndCompile(
           context, id, parameters, optional_env);
@@ -24,8 +26,14 @@ v8::MaybeLocal<v8::Value> CompileAndCall(
     return v8::MaybeLocal<v8::Value>();
   }
   v8::Local<v8::Function> fn = compiled.ToLocalChecked().As<v8::Function>();
-  return fn->Call(context, v8::Null(isolate), arguments->size(),
-                  arguments->data());
+  v8::MaybeLocal<v8::Value> ret = fn->Call(
+      context, v8::Null(isolate), arguments->size(), arguments->data());
+  // This will only be caught when something has gone terrible wrong as all
+  // electron scripts are wrapped in a try {} catch {} in run-compiler.js
+  if (try_catch.HasCaught()) {
+    LOG(ERROR) << "Failed to CompileAndCall electron script: " << id;
+  }
+  return ret;
 }
 
 }  // namespace util
diff --git a/shell/common/platform_util_linux.cc b/shell/common/platform_util_linux.cc
index df2a744b0e01c..70503bde126ae 100644
--- a/shell/common/platform_util_linux.cc
+++ b/shell/common/platform_util_linux.cc
@@ -12,6 +12,7 @@
 #include "base/nix/xdg_util.h"
 #include "base/process/kill.h"
 #include "base/process/launch.h"
+#include "base/threading/thread_restrictions.h"
 #include "ui/gtk/gtk_util.h"
 #include "url/gurl.h"
 
@@ -51,6 +52,8 @@ bool XDGUtil(const std::vector<std::string>& argv,
     return false;
 
   if (wait_for_exit) {
+    base::ScopedAllowBaseSyncPrimitivesForTesting
+        allow_sync;  // required by WaitForExit
     int exit_code = -1;
     bool success = process.WaitForExit(&exit_code);
     if (!callback.is_null())
diff --git a/shell/common/platform_util_win.cc b/shell/common/platform_util_win.cc
index edf6aaace30e2..49a023129ebf3 100644
--- a/shell/common/platform_util_win.cc
+++ b/shell/common/platform_util_win.cc
@@ -32,6 +32,7 @@
 #include "base/win/windows_version.h"
 #include "content/public/browser/browser_task_traits.h"
 #include "content/public/browser/browser_thread.h"
+#include "net/base/escape.h"
 #include "shell/common/electron_paths.h"
 #include "ui/base/win/shell.h"
 #include "url/gurl.h"
@@ -241,7 +242,9 @@ std::string OpenExternalOnWorkerThread(
   // Quote the input scheme to be sure that the command does not have
   // parameters unexpected by the external program. This url should already
   // have been escaped.
-  base::string16 escaped_url = L"\"" + base::UTF8ToUTF16(url.spec()) + L"\"";
+  base::string16 escaped_url =
+      L"\"" + base::UTF8ToUTF16(net::EscapeExternalHandlerValue(url.spec())) +
+      L"\"";
   base::string16 working_dir = options.working_dir.value();
 
   if (reinterpret_cast<ULONG_PTR>(
@@ -387,10 +390,14 @@ bool MoveItemToTrash(const base::FilePath& path, bool delete_on_fail) {
   if (!delete_sink)
     return false;
 
+  BOOL pfAnyOperationsAborted;
+
   // Processes the queued command DeleteItem. This will trigger
   // the DeleteFileProgressSink to check for Recycle Bin.
   return SUCCEEDED(pfo->DeleteItem(delete_item.Get(), delete_sink.Get())) &&
-         SUCCEEDED(pfo->PerformOperations());
+         SUCCEEDED(pfo->PerformOperations()) &&
+         SUCCEEDED(pfo->GetAnyOperationsAborted(&pfAnyOperationsAborted)) &&
+         !pfAnyOperationsAborted;
 }
 
 bool GetFolderPath(int key, base::FilePath* result) {
diff --git a/shell/common/resources/mac/Info.plist b/shell/common/resources/mac/Info.plist
index 1e36258a95f9c..1d585534067bf 100644
--- a/shell/common/resources/mac/Info.plist
+++ b/shell/common/resources/mac/Info.plist
@@ -14,7 +14,5 @@
 	<true/>
 	<key>CFBundleVersion</key>
 	<string>${ELECTRON_VERSION}</string>
-	<key>LSRequiresNativeExecution</key>
-	<true/>
 </dict>
 </plist>
diff --git a/shell/common/skia_util.cc b/shell/common/skia_util.cc
index 0fce49a9ff921..ac260fbf7225a 100644
--- a/shell/common/skia_util.cc
+++ b/shell/common/skia_util.cc
@@ -128,7 +128,7 @@ bool AddImageSkiaRepFromPath(gfx::ImageSkia* image,
       return false;
   }
 
-  const unsigned char* data =
+  const auto* data =
       reinterpret_cast<const unsigned char*>(file_contents.data());
   size_t size = file_contents.size();
 
diff --git a/shell/renderer/api/context_bridge/object_cache.cc b/shell/renderer/api/context_bridge/object_cache.cc
index 8d111747e5bac..72ab60d24e99e 100644
--- a/shell/renderer/api/context_bridge/object_cache.cc
+++ b/shell/renderer/api/context_bridge/object_cache.cc
@@ -14,12 +14,6 @@ namespace api {
 
 namespace context_bridge {
 
-ObjectCachePairNode::ObjectCachePairNode(ObjectCachePair&& pair) {
-  this->pair = std::move(pair);
-}
-
-ObjectCachePairNode::~ObjectCachePairNode() = default;
-
 ObjectCache::ObjectCache() {}
 ObjectCache::~ObjectCache() = default;
 
@@ -29,8 +23,7 @@ void ObjectCache::CacheProxiedObject(v8::Local<v8::Value> from,
     auto obj = v8::Local<v8::Object>::Cast(from);
     int hash = obj->GetIdentityHash();
 
-    auto* node = new ObjectCachePairNode(std::make_pair(from, proxy_value));
-    proxy_map_[hash].Append(node);
+    proxy_map_[hash].push_front(std::make_pair(from, proxy_value));
   }
 }
 
@@ -46,8 +39,7 @@ v8::MaybeLocal<v8::Value> ObjectCache::GetCachedProxiedObject(
     return v8::MaybeLocal<v8::Value>();
 
   auto& list = iter->second;
-  for (auto* node = list.head(); node != list.end(); node = node->next()) {
-    auto& pair = node->value()->pair;
+  for (const auto& pair : list) {
     auto from_cmp = pair.first;
     if (from_cmp == from) {
       if (pair.second.IsEmpty())
diff --git a/shell/renderer/api/context_bridge/object_cache.h b/shell/renderer/api/context_bridge/object_cache.h
index ff420f7368439..e40cd89d5b2a5 100644
--- a/shell/renderer/api/context_bridge/object_cache.h
+++ b/shell/renderer/api/context_bridge/object_cache.h
@@ -5,7 +5,7 @@
 #ifndef SHELL_RENDERER_API_CONTEXT_BRIDGE_OBJECT_CACHE_H_
 #define SHELL_RENDERER_API_CONTEXT_BRIDGE_OBJECT_CACHE_H_
 
-#include <map>
+#include <unordered_map>
 #include <utility>
 
 #include "base/containers/linked_list.h"
@@ -22,13 +22,6 @@ namespace context_bridge {
 
 using ObjectCachePair = std::pair<v8::Local<v8::Value>, v8::Local<v8::Value>>;
 
-struct ObjectCachePairNode : public base::LinkNode<ObjectCachePairNode> {
-  explicit ObjectCachePairNode(ObjectCachePair&& pair);
-  ~ObjectCachePairNode();
-
-  ObjectCachePair pair;
-};
-
 class ObjectCache final {
  public:
   ObjectCache();
@@ -41,7 +34,7 @@ class ObjectCache final {
 
  private:
   // object_identity ==> [from_value, proxy_value]
-  std::map<int, base::LinkedList<ObjectCachePairNode>> proxy_map_;
+  std::unordered_map<int, std::forward_list<ObjectCachePair>> proxy_map_;
 };
 
 }  // namespace context_bridge
diff --git a/shell/renderer/api/electron_api_context_bridge.cc b/shell/renderer/api/electron_api_context_bridge.cc
index e85c531d1af2c..6d60f3591d51e 100644
--- a/shell/renderer/api/electron_api_context_bridge.cc
+++ b/shell/renderer/api/electron_api_context_bridge.cc
@@ -485,13 +485,15 @@ v8::MaybeLocal<v8::Object> CreateProxyForAPI(
             v8::Local<v8::Value> setter_proxy;
             if (!getter.IsEmpty()) {
               if (!PassValueToOtherContext(source_context, destination_context,
-                                           getter, object_cache, false, 1)
+                                           getter, object_cache,
+                                           support_dynamic_properties, 1)
                        .ToLocal(&getter_proxy))
                 continue;
             }
             if (!setter.IsEmpty()) {
               if (!PassValueToOtherContext(source_context, destination_context,
-                                           setter, object_cache, false, 1)
+                                           setter, object_cache,
+                                           support_dynamic_properties, 1)
                        .ToLocal(&setter_proxy))
                 continue;
             }
@@ -571,7 +573,7 @@ void OverrideGlobalValueFromIsolatedWorld(
     const std::vector<std::string>& key_path,
     v8::Local<v8::Object> value,
     bool support_dynamic_properties) {
-  if (key_path.size() == 0)
+  if (key_path.empty())
     return;
 
   auto* render_frame = GetRenderFrame(value);
@@ -603,7 +605,7 @@ bool OverrideGlobalPropertyFromIsolatedWorld(
     v8::Local<v8::Object> getter,
     v8::Local<v8::Value> setter,
     gin_helper::Arguments* args) {
-  if (key_path.size() == 0)
+  if (key_path.empty())
     return false;
 
   auto* render_frame = GetRenderFrame(getter);
diff --git a/shell/renderer/electron_render_frame_observer.cc b/shell/renderer/electron_render_frame_observer.cc
index 46905889bd807..462f63bb5ed27 100644
--- a/shell/renderer/electron_render_frame_observer.cc
+++ b/shell/renderer/electron_render_frame_observer.cc
@@ -128,6 +128,16 @@ void ElectronRenderFrameObserver::OnDestruct() {
   delete this;
 }
 
+void ElectronRenderFrameObserver::DidMeaningfulLayout(
+    blink::WebMeaningfulLayout layout_type) {
+  if (layout_type == blink::WebMeaningfulLayout::kVisuallyNonEmpty) {
+    mojo::Remote<mojom::ElectronBrowser> browser_remote;
+    render_frame_->GetRemoteInterfaces()->GetInterface(
+        browser_remote.BindNewPipeAndPassReceiver());
+    browser_remote->OnFirstNonEmptyLayout();
+  }
+}
+
 void ElectronRenderFrameObserver::CreateIsolatedWorldContext() {
   auto* frame = render_frame_->GetWebFrame();
   blink::WebIsolatedWorldInfo info;
diff --git a/shell/renderer/electron_render_frame_observer.h b/shell/renderer/electron_render_frame_observer.h
index 77336b795d306..eb59ae0cd440b 100644
--- a/shell/renderer/electron_render_frame_observer.h
+++ b/shell/renderer/electron_render_frame_observer.h
@@ -33,6 +33,7 @@ class ElectronRenderFrameObserver : public content::RenderFrameObserver {
   void WillReleaseScriptContext(v8::Local<v8::Context> context,
                                 int world_id) override;
   void OnDestruct() override;
+  void DidMeaningfulLayout(blink::WebMeaningfulLayout layout_type) override;
 
  private:
   bool ShouldNotifyClient(int world_id);
diff --git a/shell/renderer/electron_renderer_client.cc b/shell/renderer/electron_renderer_client.cc
index 464eae134b5fd..37c310380d08e 100644
--- a/shell/renderer/electron_renderer_client.cc
+++ b/shell/renderer/electron_renderer_client.cc
@@ -102,18 +102,17 @@ void ElectronRendererClient::DidCreateScriptContext(
   bool should_load_node =
       (is_main_frame || is_devtools || allow_node_in_subframes) &&
       !IsWebViewFrame(renderer_context, render_frame);
-  if (!should_load_node) {
+  if (!should_load_node)
     return;
-  }
 
   injected_frames_.insert(render_frame);
 
-  // If this is the first environment we are creating, prepare the node
-  // bindings.
   if (!node_integration_initialized_) {
     node_integration_initialized_ = true;
     node_bindings_->Initialize();
     node_bindings_->PrepareMessageLoop();
+  } else if (reuse_renderer_processes_enabled) {
+    node_bindings_->PrepareMessageLoop();
   }
 
   // Setup node tracing controller.
@@ -129,7 +128,7 @@ void ElectronRendererClient::DidCreateScriptContext(
 
   // If we have disabled the site instance overrides we should prevent loading
   // any non-context aware native module
-  if (command_line->HasSwitch(switches::kDisableElectronSiteInstanceOverrides))
+  if (reuse_renderer_processes_enabled)
     env->ForceOnlyContextAwareNativeModules();
   env->WarnNonContextAwareNativeModules();
 
diff --git a/shell/renderer/printing/print_render_frame_helper_delegate.cc b/shell/renderer/printing/print_render_frame_helper_delegate.cc
index 1ee85036c6bef..c554d4d723a44 100644
--- a/shell/renderer/printing/print_render_frame_helper_delegate.cc
+++ b/shell/renderer/printing/print_render_frame_helper_delegate.cc
@@ -5,9 +5,14 @@
 #include "shell/renderer/printing/print_render_frame_helper_delegate.h"
 
 #include "content/public/renderer/render_frame.h"
+#include "extensions/buildflags/buildflags.h"
 #include "third_party/blink/public/web/web_element.h"
 #include "third_party/blink/public/web/web_local_frame.h"
 
+#if BUILDFLAG(ENABLE_EXTENSIONS)
+#include "extensions/common/constants.h"
+#endif  // BUILDFLAG(ENABLE_EXTENSIONS)
+
 namespace electron {
 
 PrintRenderFrameHelperDelegate::PrintRenderFrameHelperDelegate() = default;
@@ -17,6 +22,25 @@ PrintRenderFrameHelperDelegate::~PrintRenderFrameHelperDelegate() = default;
 // Return the PDF object element if |frame| is the out of process PDF extension.
 blink::WebElement PrintRenderFrameHelperDelegate::GetPdfElement(
     blink::WebLocalFrame* frame) {
+#if BUILDFLAG(ENABLE_EXTENSIONS)
+  GURL url = frame->GetDocument().Url();
+  bool inside_pdf_extension =
+      url.SchemeIs(extensions::kExtensionScheme) &&
+      url.host_piece() == extension_misc::kPdfExtensionId;
+  if (inside_pdf_extension) {
+    // <object> with id="plugin" is created in
+    // chrome/browser/resources/pdf/pdf_viewer_base.js.
+    auto viewer_element = frame->GetDocument().GetElementById("viewer");
+    if (!viewer_element.IsNull() && !viewer_element.ShadowRoot().IsNull()) {
+      auto plugin_element =
+          viewer_element.ShadowRoot().QuerySelector("#plugin");
+      if (!plugin_element.IsNull()) {
+        return plugin_element;
+      }
+    }
+    NOTREACHED();
+  }
+#endif  // BUILDFLAG(ENABLE_EXTENSIONS)
   return blink::WebElement();
 }
 
diff --git a/shell/renderer/renderer_client_base.cc b/shell/renderer/renderer_client_base.cc
index 6aa772aa348e1..d4eda8f1be710 100644
--- a/shell/renderer/renderer_client_base.cc
+++ b/shell/renderer/renderer_client_base.cc
@@ -53,7 +53,6 @@
 #endif
 
 #if BUILDFLAG(ENABLE_PDF_VIEWER)
-#include "chrome/renderer/pepper/chrome_pdf_print_client.h"
 #include "shell/common/electron_constants.h"
 #endif  // BUILDFLAG(ENABLE_PDF_VIEWER)
 
@@ -167,7 +166,8 @@ void RendererClientBase::RenderThreadStarted() {
 
 #if BUILDFLAG(ENABLE_PDF_VIEWER)
   // Enables printing from Chrome PDF viewer.
-  pdf::PepperPDFHost::SetPrintClient(new ChromePDFPrintClient());
+  pdf_print_client_.reset(new ChromePDFPrintClient());
+  pdf::PepperPDFHost::SetPrintClient(pdf_print_client_.get());
 #endif
 
 #if BUILDFLAG(ENABLE_BUILTIN_SPELLCHECKER)
diff --git a/shell/renderer/renderer_client_base.h b/shell/renderer/renderer_client_base.h
index 128199bbe0dc4..c9ac4f704ffb2 100644
--- a/shell/renderer/renderer_client_base.h
+++ b/shell/renderer/renderer_client_base.h
@@ -11,6 +11,7 @@
 
 #include "content/public/renderer/content_renderer_client.h"
 #include "electron/buildflags/buildflags.h"
+#include "printing/buildflags/buildflags.h"
 #include "third_party/blink/public/web/web_local_frame.h"
 // In SHARED_INTERMEDIATE_DIR.
 #include "widevine_cdm_version.h"  // NOLINT(build/include_directory)
@@ -19,6 +20,10 @@
 #include "chrome/renderer/media/chrome_key_systems_provider.h"  // nogncheck
 #endif
 
+#if BUILDFLAG(ENABLE_PDF_VIEWER)
+#include "chrome/renderer/pepper/chrome_pdf_print_client.h"  // nogncheck
+#endif  // BUILDFLAG(ENABLE_PDF_VIEWER)
+
 #if BUILDFLAG(ENABLE_BUILTIN_SPELLCHECKER)
 #include "services/service_manager/public/cpp/binder_registry.h"
 #include "services/service_manager/public/cpp/local_interface_provider.h"
@@ -139,6 +144,9 @@ class RendererClientBase : public content::ContentRendererClient
 #if BUILDFLAG(ENABLE_BUILTIN_SPELLCHECKER)
   std::unique_ptr<SpellCheck> spellcheck_;
 #endif
+#if BUILDFLAG(ENABLE_PDF_VIEWER)
+  std::unique_ptr<ChromePDFPrintClient> pdf_print_client_;
+#endif
 };
 
 }  // namespace electron
diff --git a/shell/renderer/resources/mac/Info.plist b/shell/renderer/resources/mac/Info.plist
index e809926b6594f..2d39d2a9845a9 100644
--- a/shell/renderer/resources/mac/Info.plist
+++ b/shell/renderer/resources/mac/Info.plist
@@ -12,7 +12,5 @@
   <true/>
   <key>NSSupportsAutomaticGraphicsSwitching</key>
   <true/>
-  <key>LSRequiresNativeExecution</key>
-  <true/>
 </dict>
 </plist>
diff --git a/shell/utility/electron_content_utility_client.cc b/shell/utility/electron_content_utility_client.cc
index 705f1485f5a05..6385428d8b6da 100644
--- a/shell/utility/electron_content_utility_client.cc
+++ b/shell/utility/electron_content_utility_client.cc
@@ -16,33 +16,43 @@
 #include "services/service_manager/public/cpp/service.h"
 #include "services/service_manager/sandbox/switches.h"
 
+#if defined(OS_WIN)
+#include "chrome/services/util_win/public/mojom/util_read_icon.mojom.h"
+#include "chrome/services/util_win/util_read_icon.h"
+#endif  // defined(OS_WIN)
+
 #if BUILDFLAG(ENABLE_PRINTING)
 #include "components/services/print_compositor/print_compositor_impl.h"
 #include "components/services/print_compositor/public/mojom/print_compositor.mojom.h"  // nogncheck
+#endif  // BUILDFLAG(ENABLE_PRINTING)
 
-#if defined(OS_WIN)
+#if BUILDFLAG(ENABLE_PRINTING) && defined(OS_WIN)
 #include "chrome/services/printing/pdf_to_emf_converter_factory.h"
-#include "chrome/services/printing/printing_service.h"
-#include "chrome/services/printing/public/mojom/printing_service.mojom.h"
-#include "chrome/services/util_win/public/mojom/util_read_icon.mojom.h"
-#include "chrome/services/util_win/util_read_icon.h"
+#endif
+
+#if BUILDFLAG(ENABLE_PRINT_PREVIEW) && defined(OS_WIN)
 #include "chrome/utility/printing_handler.h"
-#endif  // defined(OS_WIN)
+#endif
 
-#endif  // BUILDFLAG(ENABLE_PRINTING)
+#if BUILDFLAG(ENABLE_PRINT_PREVIEW) || \
+    (BUILDFLAG(ENABLE_PRINTING) && defined(OS_WIN))
+#include "chrome/services/printing/printing_service.h"
+#include "chrome/services/printing/public/mojom/printing_service.mojom.h"
+#endif
 
 namespace electron {
 
 namespace {
 
-#if defined(OS_WIN)
-#if BUILDFLAG(ENABLE_PRINTING)
+#if BUILDFLAG(ENABLE_PRINT_PREVIEW) || \
+    (BUILDFLAG(ENABLE_PRINTING) && defined(OS_WIN))
 auto RunPrintingService(
     mojo::PendingReceiver<printing::mojom::PrintingService> receiver) {
   return std::make_unique<printing::PrintingService>(std::move(receiver));
 }
 #endif
 
+#if defined(OS_WIN)
 auto RunWindowsIconReader(
     mojo::PendingReceiver<chrome::mojom::UtilReadIcon> receiver) {
   return std::make_unique<UtilReadIcon>(std::move(receiver));
@@ -69,7 +79,7 @@ auto RunProxyResolver(
 
 ElectronContentUtilityClient::ElectronContentUtilityClient()
     : utility_process_running_elevated_(false) {
-#if BUILDFLAG(ENABLE_PRINTING) && defined(OS_WIN)
+#if BUILDFLAG(ENABLE_PRINT_PREVIEW) && defined(OS_WIN)
   printing_handler_ = std::make_unique<printing::PrintingHandler>();
 #endif
 }
@@ -85,17 +95,17 @@ void ElectronContentUtilityClient::ExposeInterfacesToBrowser(
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   utility_process_running_elevated_ = command_line->HasSwitch(
       service_manager::switches::kNoSandboxAndElevatedPrivileges);
+#endif
 
   // If our process runs with elevated privileges, only add elevated Mojo
   // interfaces to the BinderMap.
   if (!utility_process_running_elevated_) {
-#if BUILDFLAG(ENABLE_PRINTING)
+#if BUILDFLAG(ENABLE_PRINTING) && defined(OS_WIN)
     binders->Add(
         base::BindRepeating(printing::PdfToEmfConverterFactory::Create),
         base::ThreadTaskRunnerHandle::Get());
 #endif
   }
-#endif
 }
 
 bool ElectronContentUtilityClient::OnMessageReceived(
@@ -103,7 +113,7 @@ bool ElectronContentUtilityClient::OnMessageReceived(
   if (utility_process_running_elevated_)
     return false;
 
-#if BUILDFLAG(ENABLE_PRINTING) && defined(OS_WIN)
+#if BUILDFLAG(ENABLE_PRINT_PREVIEW) && defined(OS_WIN)
   if (printing_handler_->OnMessageReceived(message))
     return true;
 #endif
@@ -114,11 +124,17 @@ bool ElectronContentUtilityClient::OnMessageReceived(
 mojo::ServiceFactory*
 ElectronContentUtilityClient::GetMainThreadServiceFactory() {
   static base::NoDestructor<mojo::ServiceFactory> factory {
-#if BUILDFLAG(ENABLE_PRINTING)
-    RunPrintCompositor,
 #if defined(OS_WIN)
-        RunPrintingService, RunWindowsIconReader
+    RunWindowsIconReader,
 #endif
+
+#if BUILDFLAG(ENABLE_PRINTING)
+        RunPrintCompositor,
+#endif
+
+#if BUILDFLAG(ENABLE_PRINT_PREVIEW) || \
+    (BUILDFLAG(ENABLE_PRINTING) && defined(OS_WIN))
+        RunPrintingService,
 #endif
   };
   return factory.get();
diff --git a/spec-main/api-app-spec.ts b/spec-main/api-app-spec.ts
index d8012a9e40f1d..80b3bc780b92e 100644
--- a/spec-main/api-app-spec.ts
+++ b/spec-main/api-app-spec.ts
@@ -1334,6 +1334,16 @@ describe('app module', () => {
       });
     });
 
+    describe('dock.hide', () => {
+      it('should not throw', () => {
+        app.dock.hide();
+        expect(app.dock.isVisible()).to.equal(false);
+      });
+    });
+
+    // Note that dock.show tests should run after dock.hide tests, to work
+    // around a bug of macOS.
+    // See https://github.com/electron/electron/pull/25269 for more.
     describe('dock.show', () => {
       it('should not throw', () => {
         return app.dock.show().then(() => {
@@ -1349,13 +1359,6 @@ describe('app module', () => {
         await expect(app.dock.show()).to.eventually.be.fulfilled.equal(undefined);
       });
     });
-
-    describe('dock.hide', () => {
-      it('should not throw', () => {
-        app.dock.hide();
-        expect(app.dock.isVisible()).to.equal(false);
-      });
-    });
   });
 
   describe('whenReady', () => {
diff --git a/spec-main/api-browser-view-spec.ts b/spec-main/api-browser-view-spec.ts
index 2c17badce8752..873e4c47bf11a 100644
--- a/spec-main/api-browser-view-spec.ts
+++ b/spec-main/api-browser-view-spec.ts
@@ -2,7 +2,7 @@ import { expect } from 'chai';
 import * as ChildProcess from 'child_process';
 import * as path from 'path';
 import { emittedOnce } from './events-helpers';
-import { BrowserView, BrowserWindow } from 'electron/main';
+import { BrowserView, BrowserWindow, webContents } from 'electron/main';
 import { closeWindow } from './window-helpers';
 
 describe('BrowserView module', () => {
@@ -46,6 +46,15 @@ describe('BrowserView module', () => {
     });
   });
 
+  it('can be created with an existing webContents', async () => {
+    const wc = (webContents as any).create({ sandbox: true });
+    await wc.loadURL('about:blank');
+
+    view = new BrowserView({ webContents: wc } as any);
+
+    expect(view.webContents.getURL()).to.equal('about:blank');
+  });
+
   describe('BrowserView.setBackgroundColor()', () => {
     it('does not throw for valid args', () => {
       view = new BrowserView();
@@ -140,12 +149,34 @@ describe('BrowserView module', () => {
       view1.destroy();
       view2.destroy();
     });
+
     it('does not throw if called multiple times with same view', () => {
       view = new BrowserView();
       w.addBrowserView(view);
       w.addBrowserView(view);
       w.addBrowserView(view);
     });
+
+    it('can handle BrowserView reparenting', async () => {
+      view = new BrowserView();
+
+      w.addBrowserView(view);
+      view.webContents.loadURL('about:blank');
+      await emittedOnce(view.webContents, 'did-finish-load');
+
+      const w2 = new BrowserWindow({ show: false });
+      w2.addBrowserView(view);
+
+      w.close();
+
+      view.webContents.loadURL(`file://${fixtures}/pages/blank.html`);
+      await emittedOnce(view.webContents, 'did-finish-load');
+
+      // Clean up - the afterEach hook assumes the webContents on w is still alive.
+      w = new BrowserWindow({ show: false });
+      w2.close();
+      w2.destroy();
+    });
   });
 
   describe('BrowserWindow.removeBrowserView()', () => {
@@ -175,6 +206,32 @@ describe('BrowserView module', () => {
     });
   });
 
+  describe('BrowserWindow.setTopBrowserView()', () => {
+    it('should throw an error when a BrowserView is not attached to the window', () => {
+      view = new BrowserView();
+      expect(() => {
+        w.setTopBrowserView(view);
+      }).to.throw(/is not attached/);
+    });
+
+    it('should throw an error when a BrowserView is attached to some other window', () => {
+      view = new BrowserView();
+
+      const win2 = new BrowserWindow();
+
+      w.addBrowserView(view);
+      view.setBounds({ x: 0, y: 0, width: 100, height: 100 });
+      win2.addBrowserView(view);
+
+      expect(() => {
+        w.setTopBrowserView(view);
+      }).to.throw(/is not attached/);
+
+      win2.close();
+      win2.destroy();
+    });
+  });
+
   describe('BrowserView.webContents.getOwnerBrowserWindow()', () => {
     it('points to owning window', () => {
       view = new BrowserView();
diff --git a/spec-main/api-browser-window-spec.ts b/spec-main/api-browser-window-spec.ts
index 3c145bb974215..62d272c9f56cc 100644
--- a/spec-main/api-browser-window-spec.ts
+++ b/spec-main/api-browser-window-spec.ts
@@ -103,6 +103,14 @@ describe('BrowserWindow module', () => {
       await emittedOnce(w.webContents, 'before-unload-fired');
     });
 
+    it('should not crash when keyboard event is sent before closing', async () => {
+      await w.loadURL('data:text/html,pls no crash');
+      const closed = emittedOnce(w, 'closed');
+      w.webContents.sendInputEvent({ type: 'keyDown', keyCode: 'Escape' });
+      w.close();
+      await closed;
+    });
+
     describe('when invoked synchronously inside navigation observer', () => {
       let server: http.Server = null as unknown as http.Server;
       let url: string = null as unknown as string;
@@ -1033,6 +1041,25 @@ describe('BrowserWindow module', () => {
           await unmaximize;
           expectBoundsEqual(w.getNormalBounds(), bounds);
         });
+        it('can check transparent window maximization', async () => {
+          w.destroy();
+          w = new BrowserWindow({
+            show: false,
+            width: 300,
+            height: 300,
+            transparent: true
+          });
+
+          const maximize = emittedOnce(w, 'resize');
+          w.show();
+          w.maximize();
+          await maximize;
+          expect(w.isMaximized()).to.equal(true);
+          const unmaximize = emittedOnce(w, 'resize');
+          w.unmaximize();
+          await unmaximize;
+          expect(w.isMaximized()).to.equal(false);
+        });
       });
 
       ifdescribe(process.platform !== 'linux')('Minimized state', () => {
@@ -1280,7 +1307,7 @@ describe('BrowserWindow module', () => {
 
     it('preserves transparency', async () => {
       const w = new BrowserWindow({ show: false, transparent: true });
-      w.loadURL('about:blank');
+      w.loadFile(path.join(fixtures, 'pages', 'theme-color.html'));
       await emittedOnce(w, 'ready-to-show');
       w.show();
 
@@ -3938,6 +3965,22 @@ describe('BrowserWindow module', () => {
     });
 
     ifdescribe(process.platform === 'darwin')('fullscreen state', () => {
+      it('should not cause a crash if called when exiting fullscreen', async () => {
+        const w = new BrowserWindow();
+
+        const enterFullScreen = emittedOnce(w, 'enter-full-screen');
+        w.setFullScreen(true);
+        await enterFullScreen;
+
+        await delay();
+
+        const leaveFullScreen = emittedOnce(w, 'leave-full-screen');
+        w.setFullScreen(false);
+        await leaveFullScreen;
+
+        w.close();
+      });
+
       it('can be changed with setFullScreen method', async () => {
         const w = new BrowserWindow();
         const enterFullScreen = emittedOnce(w, 'enter-full-screen');
@@ -4240,6 +4283,30 @@ describe('BrowserWindow module', () => {
     });
   });
 
+  describe('reloading with allowRendererProcessReuse enabled', () => {
+    it('does not cause Node.js module API hangs after reload', (done) => {
+      const w = new BrowserWindow({
+        show: false,
+        webPreferences: {
+          nodeIntegration: true
+        }
+      });
+
+      let count = 0;
+      ipcMain.on('async-node-api-done', () => {
+        if (count === 3) {
+          ipcMain.removeAllListeners('async-node-api-done');
+          done();
+        } else {
+          count++;
+          w.reload();
+        }
+      });
+
+      w.loadFile(path.join(fixtures, 'pages', 'send-after-node.html'));
+    });
+  });
+
   describe('window.webContents.focus()', () => {
     afterEach(closeAllWindows);
     it('focuses window', async () => {
diff --git a/spec-main/api-context-bridge-spec.ts b/spec-main/api-context-bridge-spec.ts
index b74ca45a09a94..673737eba0402 100644
--- a/spec-main/api-context-bridge-spec.ts
+++ b/spec-main/api-context-bridge-spec.ts
@@ -727,6 +727,24 @@ describe('contextBridge', () => {
             expect(result).to.equal('hi there');
           });
 
+          it('should work with nested getters', async () => {
+            await makeBindingWindow(() => {
+              contextBridge.internalContextBridge!.overrideGlobalValueWithDynamicPropsFromIsolatedWorld(['thing'], {
+                get foo () {
+                  return {
+                    get bar () {
+                      return 'hi there';
+                    }
+                  };
+                }
+              });
+            });
+            const result = await callWithBindings(async (root: any) => {
+              return root.thing.foo.bar;
+            });
+            expect(result).to.equal('hi there');
+          });
+
           it('should work with setters', async () => {
             await makeBindingWindow(() => {
               let a: any = null;
@@ -746,6 +764,29 @@ describe('contextBridge', () => {
             expect(result).to.equal(124);
           });
 
+          it('should work with nested getter / setter combos', async () => {
+            await makeBindingWindow(() => {
+              let a: any = null;
+              contextBridge.internalContextBridge!.overrideGlobalValueWithDynamicPropsFromIsolatedWorld(['thing'], {
+                get thingy () {
+                  return {
+                    get foo () {
+                      return a;
+                    },
+                    set foo (arg: any) {
+                      a = arg + 1;
+                    }
+                  };
+                }
+              });
+            });
+            const result = await callWithBindings(async (root: any) => {
+              root.thing.thingy.foo = 123;
+              return root.thing.thingy.foo;
+            });
+            expect(result).to.equal(124);
+          });
+
           it('should work with deep properties', async () => {
             await makeBindingWindow(() => {
               contextBridge.internalContextBridge.overrideGlobalValueWithDynamicPropsFromIsolatedWorld(['thing'], {
diff --git a/spec-main/api-crash-reporter-spec.ts b/spec-main/api-crash-reporter-spec.ts
index b7dfd5bbc19e4..580e9c2ae7be0 100644
--- a/spec-main/api-crash-reporter-spec.ts
+++ b/spec-main/api-crash-reporter-spec.ts
@@ -300,7 +300,7 @@ ifdescribe(!isLinuxOnArm && !process.mas && !process.env.DISABLE_CRASH_REPORTER_
 
         const crash = await waitForCrash();
         expect(crash.prod).to.equal('Electron');
-        expect(crash._productName).to.equal('remote-control');
+        expect(crash._productName).to.equal('electron-test-remote-control');
         expect(crash.process_type).to.equal('renderer');
         expect(crash['electron.v8-fatal.location']).to.equal('v8::Context::New()');
         expect(crash['electron.v8-fatal.message']).to.equal('Circular extension dependency');
diff --git a/spec-main/api-ipc-main-spec.ts b/spec-main/api-ipc-main-spec.ts
index 3f54527a5b497..9b3aef4474e97 100644
--- a/spec-main/api-ipc-main-spec.ts
+++ b/spec-main/api-ipc-main-spec.ts
@@ -46,6 +46,7 @@ describe('ipc main module', () => {
   });
 
   describe('ipcMain.on', () => {
+    afterEach(() => { ipcMain.removeAllListeners('test-echo'); });
     it('is not used for internals', async () => {
       const appPath = path.join(fixtures, 'api', 'ipc-main-listeners');
       const electronPath = process.execPath;
@@ -59,5 +60,27 @@ describe('ipc main module', () => {
       output = JSON.parse(output);
       expect(output).to.deep.equal(['error']);
     });
+
+    it('can be replied to', async () => {
+      ipcMain.on('test-echo', (e, arg) => {
+        e.reply('test-echo', arg);
+      });
+
+      const w = new BrowserWindow({
+        show: false,
+        webPreferences: {
+          nodeIntegration: true
+        }
+      });
+      w.loadURL('about:blank');
+      const v = await w.webContents.executeJavaScript(`new Promise((resolve, reject) => {
+        const { ipcRenderer } = require('electron')
+        ipcRenderer.send('test-echo', 'hello')
+        ipcRenderer.on('test-echo', (e, v) => {
+          resolve(v)
+        })
+      })`);
+      expect(v).to.equal('hello');
+    });
   });
 });
diff --git a/spec-main/api-menu-spec.ts b/spec-main/api-menu-spec.ts
index 8da25df7ae500..6e663ae307997 100644
--- a/spec-main/api-menu-spec.ts
+++ b/spec-main/api-menu-spec.ts
@@ -101,7 +101,7 @@ describe('Menu module', function () {
     describe('Menu sorting and building', () => {
       describe('sorts groups', () => {
         it('does a simple sort', () => {
-          const items = [
+          const items: Electron.MenuItemConstructorOptions[] = [
             {
               label: 'two',
               id: '2',
@@ -146,7 +146,7 @@ describe('Menu module', function () {
         });
 
         it('resolves cycles by ignoring things that conflict', () => {
-          const items = [
+          const items: Electron.MenuItemConstructorOptions[] = [
             {
               id: '2',
               label: 'two',
@@ -178,7 +178,7 @@ describe('Menu module', function () {
         });
 
         it('ignores references to commands that do not exist', () => {
-          const items = [
+          const items: Electron.MenuItemConstructorOptions[] = [
             {
               id: '1',
               label: 'one'
@@ -208,7 +208,7 @@ describe('Menu module', function () {
         });
 
         it('only respects the first matching [before|after]GroupContaining rule in a given group', () => {
-          const items = [
+          const items: Electron.MenuItemConstructorOptions[] = [
             {
               id: '1',
               label: 'one'
@@ -260,7 +260,7 @@ describe('Menu module', function () {
 
       describe('moves an item to a different group by merging groups', () => {
         it('can move a group of one item', () => {
-          const items = [
+          const items: Electron.MenuItemConstructorOptions[] = [
             {
               id: '1',
               label: 'one'
@@ -300,7 +300,7 @@ describe('Menu module', function () {
         });
 
         it("moves all items in the moving item's group", () => {
-          const items = [
+          const items: Electron.MenuItemConstructorOptions[] = [
             {
               id: '1',
               label: 'one'
@@ -348,7 +348,7 @@ describe('Menu module', function () {
         });
 
         it("ignores positions relative to commands that don't exist", () => {
-          const items = [
+          const items: Electron.MenuItemConstructorOptions[] = [
             {
               id: '1',
               label: 'one'
@@ -436,7 +436,7 @@ describe('Menu module', function () {
         });
 
         it('can merge multiple groups when given a list of before/after commands', () => {
-          const items = [
+          const items: Electron.MenuItemConstructorOptions[] = [
             {
               id: '1',
               label: 'one'
@@ -474,7 +474,7 @@ describe('Menu module', function () {
         });
 
         it('can merge multiple groups based on both before/after commands', () => {
-          const items = [
+          const items: Electron.MenuItemConstructorOptions[] = [
             {
               id: '1',
               label: 'one'
@@ -599,6 +599,32 @@ describe('Menu module', function () {
         expect(menuTwo.items[2].label).to.equal('c');
       });
 
+      it('should only filter excess menu separators AFTER the re-ordering for before/after is done', () => {
+        const menuOne = Menu.buildFromTemplate([
+          {
+            type: 'separator'
+          },
+          {
+            type: 'normal',
+            label: 'Foo',
+            id: 'foo'
+          },
+          {
+            type: 'normal',
+            label: 'Bar',
+            id: 'bar'
+          },
+          {
+            type: 'separator',
+            before: ['bar']
+          }]);
+
+        expect(menuOne.items).to.have.length(3);
+        expect(menuOne.items[0].label).to.equal('Foo');
+        expect(menuOne.items[1].type).to.equal('separator');
+        expect(menuOne.items[2].label).to.equal('Bar');
+      });
+
       it('should continue inserting items at next index when no specifier is present', () => {
         const menu = Menu.buildFromTemplate([
           {
diff --git a/spec-main/api-remote-spec.ts b/spec-main/api-remote-spec.ts
index c9201d58c58ad..0b5d4e8603cd5 100644
--- a/spec-main/api-remote-spec.ts
+++ b/spec-main/api-remote-spec.ts
@@ -107,7 +107,7 @@ describe('typeUtils serialization/deserialization', () => {
     expect(nonEmpty.isEmpty()).to.be.false();
     expect(nonEmpty.getAspectRatio()).to.equal(1);
     expect(nonEmpty.toDataURL()).to.not.be.empty();
-    expect(nonEmpty.toDataURL({ scaleFactor: 1.0 })).to.equal(dataURL);
+    expect(nonEmpty.toBitmap({ scaleFactor: 1.0 })).to.deep.equal(image.toBitmap({ scaleFactor: 1.0 }));
     expect(nonEmpty.getSize()).to.deep.equal({ width: 2, height: 2 });
     expect(nonEmpty.getBitmap()).to.not.be.empty();
     expect(nonEmpty.toPNG()).to.not.be.empty();
@@ -132,14 +132,12 @@ describe('typeUtils serialization/deserialization', () => {
     expect(nonEmpty.getBitmap({ scaleFactor: 1.0 })).to.not.be.empty();
     expect(nonEmpty.getBitmap({ scaleFactor: 2.0 })).to.not.be.empty();
     expect(nonEmpty.toBitmap()).to.not.be.empty();
-    expect(nonEmpty.toBitmap({ scaleFactor: 1.0 })).to.not.be.empty();
-    expect(nonEmpty.toBitmap({ scaleFactor: 2.0 })).to.not.be.empty();
+    expect(nonEmpty.toBitmap({ scaleFactor: 1.0 })).to.deep.equal(image.toBitmap({ scaleFactor: 1.0 }));
+    expect(nonEmpty.toBitmap({ scaleFactor: 2.0 })).to.deep.equal(image.toBitmap({ scaleFactor: 2.0 }));
     expect(nonEmpty.toPNG()).to.not.be.empty();
     expect(nonEmpty.toPNG({ scaleFactor: 1.0 })).to.not.be.empty();
     expect(nonEmpty.toPNG({ scaleFactor: 2.0 })).to.not.be.empty();
     expect(nonEmpty.toDataURL()).to.not.be.empty();
-    expect(nonEmpty.toDataURL({ scaleFactor: 1.0 })).to.equal(dataURL1);
-    expect(nonEmpty.toDataURL({ scaleFactor: 2.0 })).to.equal(dataURL2);
   });
 
   it('serializes and deserializes an Array', () => {
diff --git a/spec-main/api-session-spec.ts b/spec-main/api-session-spec.ts
index ed0656e7b4751..02792377f5655 100644
--- a/spec-main/api-session-spec.ts
+++ b/spec-main/api-session-spec.ts
@@ -979,10 +979,10 @@ describe('session module', () => {
 
   describe('session-created event', () => {
     it('is emitted when a session is created', async () => {
-      const eventEmitted = new Promise<Session>(resolve => app.once('session-created', resolve));
-      session.fromPartition('' + Math.random());
-      const s = await eventEmitted;
-      expect(s.constructor.name).to.equal('Session');
+      const sessionCreated = emittedOnce(app, 'session-created');
+      const session1 = session.fromPartition('' + Math.random());
+      const [session2] = await sessionCreated;
+      expect(session1).to.equal(session2);
     });
   });
 });
diff --git a/spec-main/api-shell-spec.ts b/spec-main/api-shell-spec.ts
index 747add42f9d5c..2392d0ea5e9c6 100644
--- a/spec-main/api-shell-spec.ts
+++ b/spec-main/api-shell-spec.ts
@@ -1,9 +1,14 @@
-import { BrowserWindow } from 'electron/main';
+import { BrowserWindow, app } from 'electron/main';
 import { shell } from 'electron/common';
 import { closeAllWindows } from './window-helpers';
 import { emittedOnce } from './events-helpers';
 import * as http from 'http';
+import * as fs from 'fs-extra';
+import * as path from 'path';
 import { AddressInfo } from 'net';
+import { expect } from 'chai';
+import { ifit } from './spec-helpers';
+import { execSync } from 'child_process';
 
 describe('shell module', () => {
   describe('shell.openExternal()', () => {
@@ -57,4 +62,54 @@ describe('shell module', () => {
       ]);
     });
   });
+
+  describe('shell.moveItemToTrash()', () => {
+    it('moves an item to the trash', async () => {
+      const dir = await fs.mkdtemp(path.resolve(app.getPath('temp'), 'electron-shell-spec-'));
+      const filename = path.join(dir, 'temp-to-be-deleted');
+      await fs.writeFile(filename, 'dummy-contents');
+      const result = shell.moveItemToTrash(filename);
+      expect(result).to.be.true();
+      expect(fs.existsSync(filename)).to.be.false();
+    });
+
+    it('returns false when called with a nonexistent path', () => {
+      const filename = path.join(app.getPath('temp'), 'does-not-exist');
+      const result = shell.moveItemToTrash(filename);
+      expect(result).to.be.false();
+    });
+
+    ifit(process.platform === 'darwin')('returns false when file has immutable flag', async () => {
+      const dir = await fs.mkdtemp(path.resolve(app.getPath('temp'), 'electron-shell-spec-'));
+      const tempPath = path.join(dir, 'locked-file');
+      await fs.writeFile(tempPath, 'delete me if you can');
+
+      // https://ss64.com/osx/chflags.html
+      execSync(`chflags uchg ${tempPath}`);
+      expect(shell.moveItemToTrash(tempPath)).to.be.false();
+      expect(await fs.pathExists(tempPath)).to.be.true();
+
+      execSync(`chflags nouchg ${tempPath}`);
+      expect(shell.moveItemToTrash(tempPath)).to.be.true();
+      expect(await fs.pathExists(tempPath)).to.be.false();
+    });
+
+    ifit(process.platform === 'win32')('returns false when path is in use', async () => {
+      const tempPath = await fs.mkdtemp(path.resolve(app.getPath('temp'), 'electron-shell-spec-'));
+      const cwd = process.cwd();
+      try {
+        // A process working directory is automatically locked on Windows.
+        // This is a workaround to avoid pulling in fs-extras flock method.
+        process.chdir(tempPath);
+
+        expect(shell.moveItemToTrash(tempPath)).to.be.false();
+        expect(await fs.pathExists(tempPath)).to.be.true();
+      } finally {
+        process.chdir(cwd);
+      }
+
+      expect(shell.moveItemToTrash(tempPath)).to.be.true();
+      expect(await fs.pathExists(tempPath)).to.be.false();
+    });
+  });
 });
diff --git a/spec-main/api-web-contents-spec.ts b/spec-main/api-web-contents-spec.ts
index 4532579134698..6a55af385b827 100644
--- a/spec-main/api-web-contents-spec.ts
+++ b/spec-main/api-web-contents-spec.ts
@@ -1700,9 +1700,14 @@ describe('webContents module', () => {
 
   describe('PictureInPicture video', () => {
     afterEach(closeAllWindows);
-    it('works as expected', async () => {
+    it('works as expected', async function () {
       const w = new BrowserWindow({ show: false, webPreferences: { sandbox: true } });
       await w.loadFile(path.join(fixturesPath, 'api', 'picture-in-picture.html'));
+
+      if (!await w.webContents.executeJavaScript('document.createElement(\'video\').canPlayType(\'video/webm; codecs="vp8.0"\')')) {
+        this.skip();
+      }
+
       const result = await w.webContents.executeJavaScript(
         `runTest(${features.isPictureInPictureEnabled()})`, true);
       expect(result).to.be.true();
diff --git a/spec-main/chromium-spec.ts b/spec-main/chromium-spec.ts
index 63ff3ac1b0346..2dc39d3ea601b 100644
--- a/spec-main/chromium-spec.ts
+++ b/spec-main/chromium-spec.ts
@@ -19,7 +19,9 @@ const features = process.electronBinding('features');
 const fixturesPath = path.resolve(__dirname, '..', 'spec', 'fixtures');
 
 describe('reporting api', () => {
-  it('sends a report for a deprecation', async () => {
+  // TODO(nornagon): this started failing a lot on CI. Figure out why and fix
+  // it.
+  it.skip('sends a report for a deprecation', async () => {
     const reports = new EventEmitter();
 
     // The Reporting API only works on https with valid certs. To dodge having
@@ -245,6 +247,48 @@ describe('web security', () => {
       <script src="${serverUrl}"></script>`);
     await p;
   });
+
+  it('engages CORS when web security is not disabled', async () => {
+    const w = new BrowserWindow({ show: false, webPreferences: { webSecurity: true, nodeIntegration: true } });
+    const p = emittedOnce(ipcMain, 'response');
+    await w.loadURL(`data:text/html,<script>
+        (async function() {
+          try {
+            await fetch('${serverUrl}');
+            require('electron').ipcRenderer.send('response', 'passed');
+          } catch {
+            require('electron').ipcRenderer.send('response', 'failed');
+          }
+        })();
+      </script>`);
+    const [, response] = await p;
+    expect(response).to.equal('failed');
+  });
+
+  it('bypasses CORS when web security is disabled', async () => {
+    const w = new BrowserWindow({ show: false, webPreferences: { webSecurity: false, nodeIntegration: true } });
+    const p = emittedOnce(ipcMain, 'response');
+    await w.loadURL(`data:text/html,<script>
+        (async function() {
+          try {
+            await fetch('${serverUrl}');
+            require('electron').ipcRenderer.send('response', 'passed');
+          } catch {
+            require('electron').ipcRenderer.send('response', 'failed');
+          }
+        })();
+      </script>`);
+    const [, response] = await p;
+    expect(response).to.equal('passed');
+  });
+
+  it('does not crash when multiple WebContent are created with web security disabled', () => {
+    const options = { webPreferences: { webSecurity: false } };
+    const w1 = new BrowserWindow(options);
+    w1.loadURL(serverUrl);
+    const w2 = new BrowserWindow(options);
+    w2.loadURL(serverUrl);
+  });
 });
 
 describe('command line switches', () => {
@@ -257,10 +301,13 @@ describe('command line switches', () => {
   });
   describe('--lang switch', () => {
     const currentLocale = app.getLocale();
-    const testLocale = async (locale: string, result: string) => {
+    const testLocale = async (locale: string, result: string, printEnv: boolean = false) => {
       const appPath = path.join(fixturesPath, 'api', 'locale-check');
-      const electronPath = process.execPath;
-      appProcess = ChildProcess.spawn(electronPath, [appPath, `--lang=${locale}`]);
+      const args = [appPath, `--set-lang=${locale}`];
+      if (printEnv) {
+        args.push('--print-env');
+      }
+      appProcess = ChildProcess.spawn(process.execPath, args);
 
       let output = '';
       appProcess.stdout.on('data', (data) => { output += data; });
@@ -272,6 +319,15 @@ describe('command line switches', () => {
 
     it('should set the locale', async () => testLocale('fr', 'fr'));
     it('should not set an invalid locale', async () => testLocale('asdfkl', currentLocale));
+
+    const lcAll = String(process.env.LC_ALL);
+    ifit(process.platform === 'linux')('current process has a valid LC_ALL env', async () => {
+      // The LC_ALL env should not be set to DOM locale string.
+      expect(lcAll).to.not.equal(app.getLocale());
+    });
+    ifit(process.platform === 'linux')('should not change LC_ALL', async () => testLocale('fr', lcAll, true));
+    ifit(process.platform === 'linux')('should not change LC_ALL when setting invalid locale', async () => testLocale('asdfkl', lcAll, true));
+    ifit(process.platform === 'linux')('should not change LC_ALL when --lang is not set', async () => testLocale('', lcAll, true));
   });
 
   describe('--remote-debugging-pipe switch', () => {
diff --git a/spec-main/extensions-spec.ts b/spec-main/extensions-spec.ts
index 812cde9ba0ca0..0fc618505210e 100644
--- a/spec-main/extensions-spec.ts
+++ b/spec-main/extensions-spec.ts
@@ -1,12 +1,15 @@
 import { expect } from 'chai';
-import { app, session, BrowserWindow, ipcMain, WebContents, Extension } from 'electron/main';
+import { app, session, BrowserWindow, ipcMain, WebContents, Extension, Session } from 'electron/main';
 import { closeAllWindows, closeWindow } from './window-helpers';
 import * as http from 'http';
 import { AddressInfo } from 'net';
 import * as path from 'path';
 import * as fs from 'fs';
+import * as WebSocket from 'ws';
 import { emittedOnce, emittedNTimes } from './events-helpers';
 
+const uuid = require('uuid');
+
 const fixtures = path.join(__dirname, 'fixtures');
 
 describe('chrome extensions', () => {
@@ -15,6 +18,7 @@ describe('chrome extensions', () => {
   // NB. extensions are only allowed on http://, https:// and ftp:// (!) urls by default.
   let server: http.Server;
   let url: string;
+  let port: string;
   before(async () => {
     server = http.createServer((req, res) => {
       if (req.url === '/cors') {
@@ -22,8 +26,19 @@ describe('chrome extensions', () => {
       }
       res.end(emptyPage);
     });
+
+    const wss = new WebSocket.Server({ noServer: true });
+    wss.on('connection', function connection (ws) {
+      ws.on('message', function incoming (message) {
+        if (message === 'foo') {
+          ws.send('bar');
+        }
+      });
+    });
+
     await new Promise(resolve => server.listen(0, '127.0.0.1', () => {
-      url = `http://127.0.0.1:${(server.address() as AddressInfo).port}`;
+      port = String((server.address() as AddressInfo).port);
+      url = `http://127.0.0.1:${port}`;
       resolve();
     }));
   });
@@ -37,6 +52,26 @@ describe('chrome extensions', () => {
     });
   });
 
+  it('does not crash when using chrome.management', async () => {
+    const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
+    const w = new BrowserWindow({ show: false, webPreferences: { session: customSession, sandbox: true } });
+    w.loadURL('about:blank');
+
+    await emittedOnce(w.webContents, 'dom-ready');
+    await customSession.loadExtension(path.join(fixtures, 'extensions', 'persistent-background-page'));
+    const args: any = await emittedOnce(app, 'web-contents-created');
+    const wc: Electron.WebContents = args[1];
+    await expect(wc.executeJavaScript(`
+      (() => {
+        return new Promise((resolve) => {
+          chrome.management.getSelf((info) => {
+            resolve(info);
+          });
+        })
+      })();
+    `)).to.eventually.have.property('id');
+  });
+
   it('can open WebSQLDatabase in a background page', async () => {
     const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
     const w = new BrowserWindow({ show: false, webPreferences: { session: customSession, sandbox: true } });
@@ -67,7 +102,7 @@ describe('chrome extensions', () => {
     // extension registry is redirected to the main session. so installing an
     // extension in an in-memory session results in it being installed in the
     // default session.
-    const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
+    const customSession = session.fromPartition(`persist:${uuid.v4()}`);
     await customSession.loadExtension(path.join(fixtures, 'extensions', 'red-bg'));
     const w = new BrowserWindow({ show: false, webPreferences: { session: customSession } });
     w.loadURL(url);
@@ -76,10 +111,16 @@ describe('chrome extensions', () => {
     expect(bg).to.equal('red');
   });
 
+  it('does not crash when failing to load an extension', async () => {
+    const customSession = session.fromPartition(`persist:${uuid.v4()}`);
+    const promise = customSession.loadExtension(path.join(fixtures, 'extensions', 'load-error'));
+    await expect(promise).to.eventually.be.rejected();
+  });
+
   it('serializes a loaded extension', async () => {
     const extensionPath = path.join(fixtures, 'extensions', 'red-bg');
     const manifest = JSON.parse(fs.readFileSync(path.join(extensionPath, 'manifest.json'), 'utf-8'));
-    const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
+    const customSession = session.fromPartition(`persist:${uuid.v4()}`);
     const extension = await customSession.loadExtension(extensionPath);
     expect(extension.id).to.be.a('string');
     expect(extension.name).to.be.a('string');
@@ -90,7 +131,7 @@ describe('chrome extensions', () => {
   });
 
   it('removes an extension', async () => {
-    const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
+    const customSession = session.fromPartition(`persist:${uuid.v4()}`);
     const { id } = await customSession.loadExtension(path.join(fixtures, 'extensions', 'red-bg'));
     {
       const w = new BrowserWindow({ show: false, webPreferences: { session: customSession } });
@@ -108,7 +149,7 @@ describe('chrome extensions', () => {
   });
 
   it('lists loaded extensions in getAllExtensions', async () => {
-    const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
+    const customSession = session.fromPartition(`persist:${uuid.v4()}`);
     const e = await customSession.loadExtension(path.join(fixtures, 'extensions', 'red-bg'));
     expect(customSession.getAllExtensions()).to.deep.equal([e]);
     customSession.removeExtension(e.id);
@@ -116,13 +157,13 @@ describe('chrome extensions', () => {
   });
 
   it('gets an extension by id', async () => {
-    const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
+    const customSession = session.fromPartition(`persist:${uuid.v4()}`);
     const e = await customSession.loadExtension(path.join(fixtures, 'extensions', 'red-bg'));
     expect(customSession.getExtension(e.id)).to.deep.equal(e);
   });
 
   it('confines an extension to the session it was loaded in', async () => {
-    const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
+    const customSession = session.fromPartition(`persist:${uuid.v4()}`);
     await customSession.loadExtension(path.join(fixtures, 'extensions', 'red-bg'));
     const w = new BrowserWindow({ show: false }); // not in the session
     w.loadURL(url);
@@ -132,7 +173,7 @@ describe('chrome extensions', () => {
   });
 
   it('loading an extension in a temporary session throws an error', async () => {
-    const customSession = session.fromPartition(require('uuid').v4());
+    const customSession = session.fromPartition(uuid.v4());
     await expect(customSession.loadExtension(path.join(fixtures, 'extensions', 'red-bg'))).to.eventually.be.rejectedWith('Extensions cannot be loaded in a temporary session');
   });
 
@@ -146,7 +187,7 @@ describe('chrome extensions', () => {
       return result;
     };
     beforeEach(async () => {
-      const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
+      const customSession = session.fromPartition(`persist:${uuid.v4()}`);
       extension = await customSession.loadExtension(path.join(fixtures, 'extensions', 'chrome-i18n'));
       w = new BrowserWindow({ show: false, webPreferences: { session: customSession, nodeIntegration: true } });
       w.loadURL(url);
@@ -166,7 +207,7 @@ describe('chrome extensions', () => {
   describe('chrome.runtime', () => {
     let content: any;
     before(async () => {
-      const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
+      const customSession = session.fromPartition(`persist:${uuid.v4()}`);
       await customSession.loadExtension(path.join(fixtures, 'extensions', 'chrome-runtime'));
       const w = new BrowserWindow({ show: false, webPreferences: { session: customSession } });
       try {
@@ -191,7 +232,7 @@ describe('chrome extensions', () => {
 
   describe('chrome.storage', () => {
     it('stores and retrieves a key', async () => {
-      const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
+      const customSession = session.fromPartition(`persist:${uuid.v4()}`);
       await customSession.loadExtension(path.join(fixtures, 'extensions', 'chrome-storage'));
       const w = new BrowserWindow({ show: false, webPreferences: { session: customSession, nodeIntegration: true } });
       try {
@@ -205,9 +246,75 @@ describe('chrome extensions', () => {
     });
   });
 
+  describe('chrome.webRequest', () => {
+    function fetch (contents: WebContents, url: string) {
+      return contents.executeJavaScript(`fetch(${JSON.stringify(url)})`);
+    }
+
+    let customSession: Session;
+    let w: BrowserWindow;
+
+    beforeEach(() => {
+      customSession = session.fromPartition(`persist:${uuid.v4()}`);
+      w = new BrowserWindow({ show: false, webPreferences: { session: customSession, sandbox: true, contextIsolation: true } });
+    });
+
+    describe('onBeforeRequest', () => {
+      it('can cancel http requests', async () => {
+        await w.loadURL(url);
+        await customSession.loadExtension(path.join(fixtures, 'extensions', 'chrome-webRequest'));
+        await expect(fetch(w.webContents, url)).to.eventually.be.rejectedWith(TypeError);
+      });
+
+      it('does not cancel http requests when no extension loaded', async () => {
+        await w.loadURL(url);
+        await expect(fetch(w.webContents, url)).to.not.be.rejectedWith(TypeError);
+      });
+    });
+
+    it('does not take precedence over Electron webRequest - http', async () => {
+      return new Promise((resolve) => {
+        (async () => {
+          customSession.webRequest.onBeforeRequest((details, callback) => {
+            resolve();
+            callback({ cancel: true });
+          });
+          await w.loadURL(url);
+
+          await customSession.loadExtension(path.join(fixtures, 'extensions', 'chrome-webRequest'));
+          fetch(w.webContents, url);
+        })();
+      });
+    });
+
+    it('does not take precedence over Electron webRequest - WebSocket', () => {
+      return new Promise((resolve) => {
+        (async () => {
+          customSession.webRequest.onBeforeSendHeaders(() => {
+            resolve();
+          });
+          await w.loadFile(path.join(fixtures, 'api', 'webrequest.html'), { query: { port } });
+          await customSession.loadExtension(path.join(fixtures, 'extensions', 'chrome-webRequest-wss'));
+        })();
+      });
+    });
+
+    describe('WebSocket', () => {
+      it('can be proxied', async () => {
+        await w.loadFile(path.join(fixtures, 'api', 'webrequest.html'), { query: { port } });
+        await customSession.loadExtension(path.join(fixtures, 'extensions', 'chrome-webRequest-wss'));
+        customSession.webRequest.onSendHeaders((details) => {
+          if (details.url.startsWith('ws://')) {
+            expect(details.requestHeaders.foo).be.equal('bar');
+          }
+        });
+      });
+    });
+  });
+
   describe('chrome.tabs', () => {
     it('executeScript', async () => {
-      const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
+      const customSession = session.fromPartition(`persist:${uuid.v4()}`);
       await customSession.loadExtension(path.join(fixtures, 'extensions', 'chrome-api'));
       const w = new BrowserWindow({ show: false, webPreferences: { session: customSession, nodeIntegration: true } });
       await w.loadURL(url);
@@ -222,12 +329,12 @@ describe('chrome extensions', () => {
     });
 
     it('connect', async () => {
-      const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
+      const customSession = session.fromPartition(`persist:${uuid.v4()}`);
       await customSession.loadExtension(path.join(fixtures, 'extensions', 'chrome-api'));
       const w = new BrowserWindow({ show: false, webPreferences: { session: customSession, nodeIntegration: true } });
       await w.loadURL(url);
 
-      const portName = require('uuid').v4();
+      const portName = uuid.v4();
       const message = { method: 'connectTab', args: [portName] };
       w.webContents.executeJavaScript(`window.postMessage('${JSON.stringify(message)}', '*')`);
 
@@ -238,7 +345,7 @@ describe('chrome extensions', () => {
     });
 
     it('sendMessage receives the response', async function () {
-      const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
+      const customSession = session.fromPartition(`persist:${uuid.v4()}`);
       await customSession.loadExtension(path.join(fixtures, 'extensions', 'chrome-api'));
       const w = new BrowserWindow({ show: false, webPreferences: { session: customSession, nodeIntegration: true } });
       await w.loadURL(url);
@@ -256,7 +363,7 @@ describe('chrome extensions', () => {
 
   describe('background pages', () => {
     it('loads a lazy background page when sending a message', async () => {
-      const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
+      const customSession = session.fromPartition(`persist:${uuid.v4()}`);
       await customSession.loadExtension(path.join(fixtures, 'extensions', 'lazy-background-page'));
       const w = new BrowserWindow({ show: false, webPreferences: { session: customSession, nodeIntegration: true } });
       try {
@@ -272,7 +379,7 @@ describe('chrome extensions', () => {
     });
 
     it('can use extension.getBackgroundPage from a ui page', async () => {
-      const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
+      const customSession = session.fromPartition(`persist:${uuid.v4()}`);
       const { id } = await customSession.loadExtension(path.join(fixtures, 'extensions', 'lazy-background-page'));
       const w = new BrowserWindow({ show: false, webPreferences: { session: customSession } });
       await w.loadURL(`chrome-extension://${id}/page-get-background.html`);
@@ -281,7 +388,7 @@ describe('chrome extensions', () => {
     });
 
     it('can use extension.getBackgroundPage from a ui page', async () => {
-      const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
+      const customSession = session.fromPartition(`persist:${uuid.v4()}`);
       const { id } = await customSession.loadExtension(path.join(fixtures, 'extensions', 'lazy-background-page'));
       const w = new BrowserWindow({ show: false, webPreferences: { session: customSession } });
       await w.loadURL(`chrome-extension://${id}/page-get-background.html`);
@@ -290,23 +397,35 @@ describe('chrome extensions', () => {
     });
 
     it('can use runtime.getBackgroundPage from a ui page', async () => {
-      const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
+      const customSession = session.fromPartition(`persist:${uuid.v4()}`);
       const { id } = await customSession.loadExtension(path.join(fixtures, 'extensions', 'lazy-background-page'));
       const w = new BrowserWindow({ show: false, webPreferences: { session: customSession } });
       await w.loadURL(`chrome-extension://${id}/page-runtime-get-background.html`);
       const receivedMessage = await w.webContents.executeJavaScript('window.completionPromise');
       expect(receivedMessage).to.deep.equal({ some: 'message' });
     });
-  });
 
-  it('has session in background page', async () => {
-    const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
-    await customSession.loadExtension(path.join(fixtures, 'extensions', 'persistent-background-page'));
-    const w = new BrowserWindow({ show: false, webPreferences: { session: customSession } });
-    const promise = emittedOnce(app, 'web-contents-created');
-    await w.loadURL('about:blank');
-    const [, bgPageContents] = await promise;
-    expect(bgPageContents.session).to.not.equal(undefined);
+    it('has session in background page', async () => {
+      const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
+      await customSession.loadExtension(path.join(fixtures, 'extensions', 'persistent-background-page'));
+      const w = new BrowserWindow({ show: false, webPreferences: { session: customSession } });
+      const promise = emittedOnce(app, 'web-contents-created');
+      await w.loadURL('about:blank');
+      const [, bgPageContents] = await promise;
+      expect(bgPageContents.session).to.not.equal(undefined);
+    });
+
+    it('can open devtools of background page', async () => {
+      const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
+      await customSession.loadExtension(path.join(fixtures, 'extensions', 'persistent-background-page'));
+      const w = new BrowserWindow({ show: false, webPreferences: { session: customSession } });
+      const promise = emittedOnce(app, 'web-contents-created');
+      await w.loadURL('about:blank');
+      const [, bgPageContents] = await promise;
+      expect(bgPageContents.getType()).to.equal('backgroundPage');
+      bgPageContents.openDevTools();
+      bgPageContents.closeDevTools();
+    });
   });
 
   describe('devtools extensions', () => {
@@ -338,7 +457,7 @@ describe('chrome extensions', () => {
     };
 
     it('loads a devtools extension', async () => {
-      const customSession = session.fromPartition(`persist:${require('uuid').v4()}`);
+      const customSession = session.fromPartition(`persist:${uuid.v4()}`);
       customSession.loadExtension(path.join(fixtures, 'extensions', 'devtools-extension'));
       const winningMessage = emittedOnce(ipcMain, 'winning');
       const w = new BrowserWindow({ show: true, webPreferences: { session: customSession, nodeIntegration: true } });
diff --git a/spec-main/fixtures/api/ipc-main-listeners/package.json b/spec-main/fixtures/api/ipc-main-listeners/package.json
index 7acf9eb5274bc..9400a77a8c7a5 100644
--- a/spec-main/fixtures/api/ipc-main-listeners/package.json
+++ b/spec-main/fixtures/api/ipc-main-listeners/package.json
@@ -1,4 +1,4 @@
 {
-  "name": "ipc-main-listeners",
+  "name": "electron-test-ipc-main-listeners",
   "main": "main.js"
 }
diff --git a/spec-main/fixtures/api/net-log/package.json b/spec-main/fixtures/api/net-log/package.json
index 59272007963f9..4b99b89a4c282 100644
--- a/spec-main/fixtures/api/net-log/package.json
+++ b/spec-main/fixtures/api/net-log/package.json
@@ -1,4 +1,4 @@
 {
-  "name": "net-log",
+  "name": "electron-test-net-log",
   "main": "main.js"
 }
diff --git a/spec-main/fixtures/api/service-workers/sw-logs.js b/spec-main/fixtures/api/service-workers/sw-logs.js
index 464909e617428..04e620f913a4a 100644
--- a/spec-main/fixtures/api/service-workers/sw-logs.js
+++ b/spec-main/fixtures/api/service-workers/sw-logs.js
@@ -1,6 +1,6 @@
-self.addEventListener('install', function (event) {
-  console.log('log log');
-  console.info('info log');
-  console.warn('warn log');
-  console.error('error log');
-});
+self.addEventListener('install', function (event) {
+  console.log('log log');
+  console.info('info log');
+  console.warn('warn log');
+  console.error('error log');
+});
diff --git a/spec-main/fixtures/api/service-workers/sw.js b/spec-main/fixtures/api/service-workers/sw.js
index 89c36ad0cef59..7c3ad71f2bbdf 100644
--- a/spec-main/fixtures/api/service-workers/sw.js
+++ b/spec-main/fixtures/api/service-workers/sw.js
@@ -1,3 +1,3 @@
-self.addEventListener('install', function (event) {
-  console.log('Installed');
-});
+self.addEventListener('install', function (event) {
+  console.log('Installed');
+});
diff --git a/spec-main/fixtures/apps/crash/package.json b/spec-main/fixtures/apps/crash/package.json
index 78aa5962569c2..fefcef88bea69 100644
--- a/spec-main/fixtures/apps/crash/package.json
+++ b/spec-main/fixtures/apps/crash/package.json
@@ -1,4 +1,4 @@
 {
-  "name": "crash",
+  "name": "electron-test-crash",
   "main": "main.js"
 }
diff --git a/spec-main/fixtures/apps/remote-control/package.json b/spec-main/fixtures/apps/remote-control/package.json
index 738eef5e46f9f..1d473fd35e0e8 100644
--- a/spec-main/fixtures/apps/remote-control/package.json
+++ b/spec-main/fixtures/apps/remote-control/package.json
@@ -1,4 +1,4 @@
 {
-  "name": "remote-control",
+  "name": "electron-test-remote-control",
   "main": "main.js"
 }
diff --git a/spec-main/fixtures/auto-update/check/package.json b/spec-main/fixtures/auto-update/check/package.json
index 5edc5dc51ce71..05b06e42b92f0 100644
--- a/spec-main/fixtures/auto-update/check/package.json
+++ b/spec-main/fixtures/auto-update/check/package.json
@@ -1,5 +1,5 @@
 {
-  "name": "initial-app",
+  "name": "electron-test-initial-app",
   "version": "1.0.0",
   "main": "./index.js"
 }
\ No newline at end of file
diff --git a/spec-main/fixtures/auto-update/initial/package.json b/spec-main/fixtures/auto-update/initial/package.json
index 5edc5dc51ce71..05b06e42b92f0 100644
--- a/spec-main/fixtures/auto-update/initial/package.json
+++ b/spec-main/fixtures/auto-update/initial/package.json
@@ -1,5 +1,5 @@
 {
-  "name": "initial-app",
+  "name": "electron-test-initial-app",
   "version": "1.0.0",
   "main": "./index.js"
 }
\ No newline at end of file
diff --git a/spec-main/fixtures/auto-update/update/package.json b/spec-main/fixtures/auto-update/update/package.json
index 5edc5dc51ce71..05b06e42b92f0 100644
--- a/spec-main/fixtures/auto-update/update/package.json
+++ b/spec-main/fixtures/auto-update/update/package.json
@@ -1,5 +1,5 @@
 {
-  "name": "initial-app",
+  "name": "electron-test-initial-app",
   "version": "1.0.0",
   "main": "./index.js"
 }
\ No newline at end of file
diff --git a/spec-main/fixtures/crash-cases/api-browser-destroy/index.js b/spec-main/fixtures/crash-cases/api-browser-destroy/index.js
new file mode 100644
index 0000000000000..19d92fe84cf45
--- /dev/null
+++ b/spec-main/fixtures/crash-cases/api-browser-destroy/index.js
@@ -0,0 +1,27 @@
+const { app, BrowserWindow, BrowserView } = require('electron');
+const { expect } = require('chai');
+const assert = require('assert');
+
+function createWindow () {
+  // Create the browser window.
+  const mainWindow = new BrowserWindow({
+    width: 800,
+    height: 600,
+    webPreferences: {
+      nodeIntegration: true
+    }
+  });
+  const view = new BrowserView();
+  mainWindow.addBrowserView(view);
+  view.webContents.destroy();
+
+  view.setBounds({ x: 0, y: 0, width: 0, height: 0 });
+  const bounds = view.getBounds();
+  expect(bounds).to.deep.equal({ x: 0, y: 0, width: 0, height: 0 });
+  view.setBackgroundColor('#56cc5b10');
+}
+
+app.on('ready', () => {
+  createWindow();
+  app.quit();
+});
diff --git a/spec-main/fixtures/crash-cases/setimmediate-renderer-crash/index.js b/spec-main/fixtures/crash-cases/setimmediate-renderer-crash/index.js
new file mode 100644
index 0000000000000..7960616214020
--- /dev/null
+++ b/spec-main/fixtures/crash-cases/setimmediate-renderer-crash/index.js
@@ -0,0 +1,22 @@
+const { app, BrowserWindow } = require('electron');
+const path = require('path');
+
+app.whenReady().then(() => {
+  const win = new BrowserWindow({
+    show: false,
+    webPreferences: {
+      nodeIntegration: true,
+      preload: path.resolve(__dirname, 'preload.js')
+    }
+  });
+
+  win.loadURL('about:blank');
+
+  win.webContents.on('render-process-gone', () => {
+    process.exit(1);
+  });
+
+  win.webContents.on('did-finish-load', () => {
+    setTimeout(() => app.quit());
+  });
+});
diff --git a/spec-main/fixtures/crash-cases/setimmediate-renderer-crash/preload.js b/spec-main/fixtures/crash-cases/setimmediate-renderer-crash/preload.js
new file mode 100644
index 0000000000000..8e8afb06af723
--- /dev/null
+++ b/spec-main/fixtures/crash-cases/setimmediate-renderer-crash/preload.js
@@ -0,0 +1,3 @@
+setImmediate(() => {
+  throw new Error('oh no');
+});
diff --git a/spec-main/fixtures/extensions/chrome-webRequest-wss/background.js b/spec-main/fixtures/extensions/chrome-webRequest-wss/background.js
new file mode 100644
index 0000000000000..94ddee976b1ee
--- /dev/null
+++ b/spec-main/fixtures/extensions/chrome-webRequest-wss/background.js
@@ -0,0 +1,12 @@
+/* global chrome */
+
+chrome.webRequest.onBeforeSendHeaders.addListener(
+  (details) => {
+    if (details.requestHeaders) {
+      details.requestHeaders.foo = 'bar';
+    }
+    return { cancel: false, requestHeaders: details.requestHeaders };
+  },
+  { urls: ['*://127.0.0.1:*'] },
+  ['blocking']
+);
diff --git a/spec-main/fixtures/extensions/chrome-webRequest-wss/manifest.json b/spec-main/fixtures/extensions/chrome-webRequest-wss/manifest.json
new file mode 100644
index 0000000000000..c1723d2118850
--- /dev/null
+++ b/spec-main/fixtures/extensions/chrome-webRequest-wss/manifest.json
@@ -0,0 +1,10 @@
+{
+  "name": "chrome-webRequest",
+  "version": "1.0",
+  "background": {
+    "scripts": ["background.js"],
+    "persistent": true
+  },
+  "permissions": ["webRequest", "webRequestBlocking", "<all_urls>"],
+  "manifest_version": 2
+}
diff --git a/spec-main/fixtures/extensions/chrome-webRequest/background.js b/spec-main/fixtures/extensions/chrome-webRequest/background.js
new file mode 100644
index 0000000000000..ba6f9f3f610ea
--- /dev/null
+++ b/spec-main/fixtures/extensions/chrome-webRequest/background.js
@@ -0,0 +1,9 @@
+/* global chrome */
+
+chrome.webRequest.onBeforeRequest.addListener(
+  (details) => {
+    return { cancel: true };
+  },
+  { urls: ['*://127.0.0.1:*'] },
+  ['blocking']
+);
diff --git a/spec-main/fixtures/extensions/chrome-webRequest/manifest.json b/spec-main/fixtures/extensions/chrome-webRequest/manifest.json
new file mode 100644
index 0000000000000..c1723d2118850
--- /dev/null
+++ b/spec-main/fixtures/extensions/chrome-webRequest/manifest.json
@@ -0,0 +1,10 @@
+{
+  "name": "chrome-webRequest",
+  "version": "1.0",
+  "background": {
+    "scripts": ["background.js"],
+    "persistent": true
+  },
+  "permissions": ["webRequest", "webRequestBlocking", "<all_urls>"],
+  "manifest_version": 2
+}
diff --git a/spec-main/fixtures/extensions/load-error/manifest.json b/spec-main/fixtures/extensions/load-error/manifest.json
new file mode 100644
index 0000000000000..29a9cd7975e3d
--- /dev/null
+++ b/spec-main/fixtures/extensions/load-error/manifest.json
@@ -0,0 +1,8 @@
+{
+  "name": "load-error",
+  "version": "1.0",
+  "icons": {
+    "16": "/images/error.png"
+  },
+  "manifest_version": 2
+}
diff --git a/spec-main/fixtures/release-notes/cache/electron-electron-commit-0600420bac25439fc2067d51c6aaa4ee11770577 b/spec-main/fixtures/release-notes/cache/electron-electron-commit-0600420bac25439fc2067d51c6aaa4ee11770577
new file mode 100644
index 0000000000000..8299cb85bf303
--- /dev/null
+++ b/spec-main/fixtures/release-notes/cache/electron-electron-commit-0600420bac25439fc2067d51c6aaa4ee11770577
@@ -0,0 +1 @@
+{"status":200,"url":"https://api.github.com/repos/electron/electron/commits/0600420bac25439fc2067d51c6aaa4ee11770577/pulls","headers":{"access-control-allow-origin":"*","access-control-expose-headers":"ETag, Link, Location, Retry-After, X-GitHub-OTP, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, X-OAuth-Scopes, X-Accepted-OAuth-Scopes, X-Poll-Interval, X-GitHub-Media-Type, Deprecation, Sunset","cache-control":"private, max-age=60, s-maxage=60","connection":"close","content-encoding":"gzip","content-security-policy":"default-src 'none'","content-type":"application/json; charset=utf-8","date":"Tue, 26 May 2020 16:42:26 GMT","etag":"W/\"3601649b1f433390bb296fd32be0d785\"","referrer-policy":"origin-when-cross-origin, strict-origin-when-cross-origin","server":"GitHub.com","status":"200 OK","strict-transport-security":"max-age=31536000; includeSubdomains; preload","transfer-encoding":"chunked","vary":"Accept, Authorization, Cookie, X-GitHub-OTP, Accept-Encoding, Accept, 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Since the GUID was statically derived from the AppUserModelId, PR 2328 had to be reverted because it broke all Apps without code signature when they updated and changed there executable path.\r\n\r\nBased on above behaviors of the Windows API its best to make this an opt-in. The developer has to be aware of the behavior/requirements using the GUID parameter. It also allows the mitigation of unexpected problems with the Tray creation by providing a new GUID.\r\n\r\n<!--\r\nThank you for your Pull Request. Please provide a description above and review\r\nthe requirements below.\r\n\r\nContributors guide: https://github.com/electron/electron/blob/master/CONTRIBUTING.md\r\n-->\r\n\r\n#### Checklist\r\n<!-- Remove items that do not apply. 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+{"status":200,"url":"https://api.github.com/repos/electron/electron/issues/20214/comments?per_page=100","headers":{"access-control-allow-origin":"*","access-control-expose-headers":"ETag, Link, Location, Retry-After, X-GitHub-OTP, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, X-OAuth-Scopes, X-Accepted-OAuth-Scopes, X-Poll-Interval, X-GitHub-Media-Type, Deprecation, Sunset","cache-control":"private, max-age=60, s-maxage=60","connection":"close","content-encoding":"gzip","content-security-policy":"default-src 'none'","content-type":"application/json; charset=utf-8","date":"Tue, 26 May 2020 16:31:14 GMT","etag":"W/\"3a1b7642c1edb42f6a13611136ff55a5\"","referrer-policy":"origin-when-cross-origin, strict-origin-when-cross-origin","server":"GitHub.com","status":"200 OK","strict-transport-security":"max-age=31536000; includeSubdomains; preload","transfer-encoding":"chunked","vary":"Accept, Authorization, Cookie, X-GitHub-OTP, Accept-Encoding, Accept, X-Requested-With","x-accepted-oauth-scopes":"","x-content-type-options":"nosniff","x-frame-options":"deny","x-github-media-type":"github.v3; format=json","x-github-request-id":"C1E4:508A:20B53:39898:5ECD444B","x-oauth-scopes":"repo","x-ratelimit-limit":"5000","x-ratelimit-remaining":"4970","x-ratelimit-reset":"1590510696","x-xss-protection":"1; mode=block"},"data":[{"url":"https://api.github.com/repos/electron/electron/issues/comments/530855479","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-530855479","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":530855479,"node_id":"MDEyOklzc3VlQ29tbWVudDUzMDg1NTQ3OQ==","user":{"login":"nornagon","id":172800,"node_id":"MDQ6VXNlcjE3MjgwMA==","avatar_url":"https://avatars2.githubusercontent.com/u/172800?v=4","gravatar_id":"","url":"https://api.github.com/users/nornagon","html_url":"https://github.com/nornagon","followers_url":"https://api.github.com/users/nornagon/followers","following_url":"https://api.github.com/users/nornagon/following{/other_user}","gists_url":"https://api.github.com/users/nornagon/gists{/gist_id}","starred_url":"https://api.github.com/users/nornagon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nornagon/subscriptions","organizations_url":"https://api.github.com/users/nornagon/orgs","repos_url":"https://api.github.com/users/nornagon/repos","events_url":"https://api.github.com/users/nornagon/events{/privacy}","received_events_url":"https://api.github.com/users/nornagon/received_events","type":"User","site_admin":false},"created_at":"2019-09-12T14:35:55Z","updated_at":"2019-09-12T14:35:55Z","author_association":"MEMBER","body":"I did some preliminary performance testing. The numbers below are the average time taken, in milliseconds, to send a Uint8Array buffer of a given size, across 200 calls to `send()`.\r\n\r\nWith the existing mojo-based `base::Value` serialization:\r\n```\r\n200 x 2k: 0.42\r\n200 x 4k: 0.60\r\n200 x 8k: 0.93\r\n200 x 16k: 1.61\r\n200 x 32k: 2.88\r\n200 x 64k: 5.50\r\n200 x 128k: 10.74\r\n200 x 256k: 21.07\r\n200 x 512k: 42.62\r\n```\r\n\r\nWith this PR, using v8's ValueSerializer:\r\n```\r\n200 x 2k: 0.44\r\n200 x 4k: 0.55\r\n200 x 8k: 0.76\r\n200 x 16k: 1.08\r\n200 x 32k: 1.90\r\n200 x 64k: 3.44\r\n200 x 128k: 6.53\r\n200 x 256k: 12.59\r\n200 x 512k: 23.99\r\n```\r\n\r\n\r\nSo this seems to be a little less than twice as fast for this use case."},{"url":"https://api.github.com/repos/electron/electron/issues/comments/530916907","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-530916907","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":530916907,"node_id":"MDEyOklzc3VlQ29tbWVudDUzMDkxNjkwNw==","user":{"login":"nornagon","id":172800,"node_id":"MDQ6VXNlcjE3MjgwMA==","avatar_url":"https://avatars2.githubusercontent.com/u/172800?v=4","gravatar_id":"","url":"https://api.github.com/users/nornagon","html_url":"https://github.com/nornagon","followers_url":"https://api.github.com/users/nornagon/followers","following_url":"https://api.github.com/users/nornagon/following{/other_user}","gists_url":"https://api.github.com/users/nornagon/gists{/gist_id}","starred_url":"https://api.github.com/users/nornagon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nornagon/subscriptions","organizations_url":"https://api.github.com/users/nornagon/orgs","repos_url":"https://api.github.com/users/nornagon/repos","events_url":"https://api.github.com/users/nornagon/events{/privacy}","received_events_url":"https://api.github.com/users/nornagon/received_events","type":"User","site_admin":false},"created_at":"2019-09-12T17:05:11Z","updated_at":"2019-09-12T17:05:11Z","author_association":"MEMBER","body":"Ref https://github.com/electron/electron/issues/18758"},{"url":"https://api.github.com/repos/electron/electron/issues/comments/530917146","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-530917146","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":530917146,"node_id":"MDEyOklzc3VlQ29tbWVudDUzMDkxNzE0Ng==","user":{"login":"jkleinsc","id":609052,"node_id":"MDQ6VXNlcjYwOTA1Mg==","avatar_url":"https://avatars0.githubusercontent.com/u/609052?v=4","gravatar_id":"","url":"https://api.github.com/users/jkleinsc","html_url":"https://github.com/jkleinsc","followers_url":"https://api.github.com/users/jkleinsc/followers","following_url":"https://api.github.com/users/jkleinsc/following{/other_user}","gists_url":"https://api.github.com/users/jkleinsc/gists{/gist_id}","starred_url":"https://api.github.com/users/jkleinsc/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jkleinsc/subscriptions","organizations_url":"https://api.github.com/users/jkleinsc/orgs","repos_url":"https://api.github.com/users/jkleinsc/repos","events_url":"https://api.github.com/users/jkleinsc/events{/privacy}","received_events_url":"https://api.github.com/users/jkleinsc/received_events","type":"User","site_admin":true},"created_at":"2019-09-12T17:05:48Z","updated_at":"2019-09-12T17:05:48Z","author_association":"MEMBER","body":"Could we possibly support both the existing serialization and the sca approach at the same time?  I'm wondering if we can follow a deprecation path here or if this will have to be all or nothing."},{"url":"https://api.github.com/repos/electron/electron/issues/comments/530925525","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-530925525","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":530925525,"node_id":"MDEyOklzc3VlQ29tbWVudDUzMDkyNTUyNQ==","user":{"login":"nornagon","id":172800,"node_id":"MDQ6VXNlcjE3MjgwMA==","avatar_url":"https://avatars2.githubusercontent.com/u/172800?v=4","gravatar_id":"","url":"https://api.github.com/users/nornagon","html_url":"https://github.com/nornagon","followers_url":"https://api.github.com/users/nornagon/followers","following_url":"https://api.github.com/users/nornagon/following{/other_user}","gists_url":"https://api.github.com/users/nornagon/gists{/gist_id}","starred_url":"https://api.github.com/users/nornagon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nornagon/subscriptions","organizations_url":"https://api.github.com/users/nornagon/orgs","repos_url":"https://api.github.com/users/nornagon/repos","events_url":"https://api.github.com/users/nornagon/events{/privacy}","received_events_url":"https://api.github.com/users/nornagon/received_events","type":"User","site_admin":false},"created_at":"2019-09-12T17:27:54Z","updated_at":"2019-09-12T17:27:54Z","author_association":"MEMBER","body":"Tried this with some larger buffers:\r\n\r\nBefore:\r\n```\r\n10 x 1024k: 93.44\r\n10 x 2048k: 183.62\r\n10 x 4096k: 352.30\r\n10 x 8192k: 727.64\r\n10 x 16384k: 1443.97\r\n10 x 32768k: 2845.11\r\n10 x 65536k: 5565.72\r\n---crashed with buffers of size 128M---\r\n```\r\n\r\nafter:\r\n```\r\n10 x 1024k: 69.51\r\n10 x 2048k: 100.01\r\n10 x 4096k: 194.63\r\n10 x 8192k: 386.91\r\n10 x 16384k: 774.37\r\n10 x 32768k: 1606.11\r\n10 x 65536k: 3262.18\r\n10 x 131072k: 6703.16\r\n10 x 262144k: 13136.74\r\n```"},{"url":"https://api.github.com/repos/electron/electron/issues/comments/530981366","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-530981366","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":530981366,"node_id":"MDEyOklzc3VlQ29tbWVudDUzMDk4MTM2Ng==","user":{"login":"nornagon","id":172800,"node_id":"MDQ6VXNlcjE3MjgwMA==","avatar_url":"https://avatars2.githubusercontent.com/u/172800?v=4","gravatar_id":"","url":"https://api.github.com/users/nornagon","html_url":"https://github.com/nornagon","followers_url":"https://api.github.com/users/nornagon/followers","following_url":"https://api.github.com/users/nornagon/following{/other_user}","gists_url":"https://api.github.com/users/nornagon/gists{/gist_id}","starred_url":"https://api.github.com/users/nornagon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nornagon/subscriptions","organizations_url":"https://api.github.com/users/nornagon/orgs","repos_url":"https://api.github.com/users/nornagon/repos","events_url":"https://api.github.com/users/nornagon/events{/privacy}","received_events_url":"https://api.github.com/users/nornagon/received_events","type":"User","site_admin":false},"created_at":"2019-09-12T19:57:09Z","updated_at":"2019-09-12T19:57:09Z","author_association":"MEMBER","body":"@jkleinsc I'd like to first try to find a way we can make this at least _more_ compatible with the existing structure, if not 1:1. If we can find a way that works for 99% of use cases, then I think we should cut over directly and accept the breakage. If we find fundamental issues that are not paper-over-able, then we should investigate ways we can expose this functionality differently (perhaps a new set of APIs like `ipcRenderer.post()`, or perhaps a deprecation cycle of some sort)."},{"url":"https://api.github.com/repos/electron/electron/issues/comments/531005426","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-531005426","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":531005426,"node_id":"MDEyOklzc3VlQ29tbWVudDUzMTAwNTQyNg==","user":{"login":"nornagon","id":172800,"node_id":"MDQ6VXNlcjE3MjgwMA==","avatar_url":"https://avatars2.githubusercontent.com/u/172800?v=4","gravatar_id":"","url":"https://api.github.com/users/nornagon","html_url":"https://github.com/nornagon","followers_url":"https://api.github.com/users/nornagon/followers","following_url":"https://api.github.com/users/nornagon/following{/other_user}","gists_url":"https://api.github.com/users/nornagon/gists{/gist_id}","starred_url":"https://api.github.com/users/nornagon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nornagon/subscriptions","organizations_url":"https://api.github.com/users/nornagon/orgs","repos_url":"https://api.github.com/users/nornagon/repos","events_url":"https://api.github.com/users/nornagon/events{/privacy}","received_events_url":"https://api.github.com/users/nornagon/received_events","type":"User","site_admin":false},"created_at":"2019-09-12T21:02:15Z","updated_at":"2019-09-12T21:02:15Z","author_association":"MEMBER","body":"I also tried this with complex objects. The numbers below are for NxM objects, where N is the breadth and M is the depth. For example, a 2x3 object is:\r\n```\r\n{'key-0': {'key-0': {'key-0': {'key-0': {}, 'key-1': {}}, 'key-1': {'key-0': {}, 'key-1': {}}}, 'key-1': {'key-0': {'key-0': {}, 'key-1': {}}, 'key-1': {'key-0': {}, 'key-1': {}}}}, 'key-1': {'key-0': {'key-0': {'key-0': {}, 'key-1': {}}, 'key-1': {'key-0': {}, 'key-1': {}}}, 'key-1': {'key-0': {'key-0': {}, 'key-1': {}}, 'key-1': {'key-0': {}, 'key-1': {}}}}}\r\n```\r\n\r\nA NaN represents a renderer crash.\r\n\r\nBefore:\r\n```\r\n10 x 1x1: 3.34\r\n10 x 1x2: 3.34\r\n10 x 1x4: 3.26\r\n10 x 1x8: 3.30\r\n10 x 1x16: 3.35\r\n10 x 2x1: 3.48\r\n10 x 2x2: 3.42\r\n10 x 2x4: 3.77\r\n10 x 2x8: 10.01\r\n10 x 2x16: 1736.84\r\n10 x 4x1: 3.21\r\n10 x 4x2: 3.41\r\n10 x 4x4: 7.92\r\n10 x 4x8: 1142.82\r\n10 x 4x16: NaN\r\n10 x 8x1: 3.52\r\n10 x 8x2: 4.08\r\n10 x 8x4: 64.33\r\n10 x 8x8: NaN\r\n10 x 8x16: NaN\r\n10 x 16x1: 4.52\r\n10 x 16x2: 7.23\r\n10 x 16x4: 1003.91\r\n10 x 16x8: NaN\r\n10 x 16x16: NaN\r\n```\r\nAfter:\r\n```\r\n10 x 1x1: 3.38\r\n10 x 1x2: 4.00\r\n10 x 1x4: 3.37\r\n10 x 1x8: 3.01\r\n10 x 1x16: 3.06\r\n10 x 2x1: 4.38\r\n10 x 2x2: 4.14\r\n10 x 2x4: 3.67\r\n10 x 2x8: 5.41\r\n10 x 2x16: 409.08\r\n10 x 4x1: 3.07\r\n10 x 4x2: 3.65\r\n10 x 4x4: 3.85\r\n10 x 4x8: 234.70\r\n10 x 4x16: NaN\r\n10 x 8x1: 3.51\r\n10 x 8x2: 3.29\r\n10 x 8x4: 15.58\r\n10 x 8x8: 87138.07\r\n10 x 8x16: NaN\r\n10 x 16x1: 3.93\r\n10 x 16x2: 4.05\r\n10 x 16x4: 181.39\r\n10 x 16x8: NaN\r\n10 x 16x16: NaN\r\n```\r\n\r\nSo, quite a bit faster. I think the crashes are when _constructing_ those stupidly large objects, rather than serializing them. And the new code does succeed on the 8x8 case, where the old code crashed."},{"url":"https://api.github.com/repos/electron/electron/issues/comments/533729544","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-533729544","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":533729544,"node_id":"MDEyOklzc3VlQ29tbWVudDUzMzcyOTU0NA==","user":{"login":"nornagon","id":172800,"node_id":"MDQ6VXNlcjE3MjgwMA==","avatar_url":"https://avatars2.githubusercontent.com/u/172800?v=4","gravatar_id":"","url":"https://api.github.com/users/nornagon","html_url":"https://github.com/nornagon","followers_url":"https://api.github.com/users/nornagon/followers","following_url":"https://api.github.com/users/nornagon/following{/other_user}","gists_url":"https://api.github.com/users/nornagon/gists{/gist_id}","starred_url":"https://api.github.com/users/nornagon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nornagon/subscriptions","organizations_url":"https://api.github.com/users/nornagon/orgs","repos_url":"https://api.github.com/users/nornagon/repos","events_url":"https://api.github.com/users/nornagon/events{/privacy}","received_events_url":"https://api.github.com/users/nornagon/received_events","type":"User","site_admin":false},"created_at":"2019-09-20T22:22:22Z","updated_at":"2019-09-25T19:58:17Z","author_association":"MEMBER","body":"Remaining TODOs as of latest commit:\r\n\r\n- [x] Handle errors gracefully & correctly.\r\n- [x] Investigate whether we can discriminate between `Buffer` and `Uint8Array` wisely, and deserialize `Buffer`s as `Buffer`s where we can, and `Uint8Array` where we can't (e.g. in sandboxed renderers).\r\n- [x] Convert the remaining methods to the new serialization algorithm (`webContents.send`, `messageTo`, and `messageHost`).\r\n- [x] Clean up the somewhat hacky delegates in blink_converter.cc"},{"url":"https://api.github.com/repos/electron/electron/issues/comments/534217625","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-534217625","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":534217625,"node_id":"MDEyOklzc3VlQ29tbWVudDUzNDIxNzYyNQ==","user":{"login":"nornagon","id":172800,"node_id":"MDQ6VXNlcjE3MjgwMA==","avatar_url":"https://avatars2.githubusercontent.com/u/172800?v=4","gravatar_id":"","url":"https://api.github.com/users/nornagon","html_url":"https://github.com/nornagon","followers_url":"https://api.github.com/users/nornagon/followers","following_url":"https://api.github.com/users/nornagon/following{/other_user}","gists_url":"https://api.github.com/users/nornagon/gists{/gist_id}","starred_url":"https://api.github.com/users/nornagon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nornagon/subscriptions","organizations_url":"https://api.github.com/users/nornagon/orgs","repos_url":"https://api.github.com/users/nornagon/repos","events_url":"https://api.github.com/users/nornagon/events{/privacy}","received_events_url":"https://api.github.com/users/nornagon/received_events","type":"User","site_admin":false},"created_at":"2019-09-23T18:09:10Z","updated_at":"2019-09-23T18:09:10Z","author_association":"MEMBER","body":"OK, there's a choice to make about how we handle when non-POJO objects are passed to IPC functions (things like DOM objects, `WebContents`, `process.env`, etc.).\r\n\r\n1. Throw an exception.\r\n    - This is the safest option, but also the most disruptive. (e.g. many of Electron's internal APIs pass such objects to IPC methods, and will need to be refactored.)\r\n2. JSON.stringify()/JSON.parse() them.\r\n    - This is roughly similar to current behavior of the IPC methods, in that it can't handle NaN or Infinity, or cyclic objects. However, it might be somewhat confusing to have some objects work differently based on whether they're referenced from a non-POJO object or not. It's a fairly obscure corner case though, so maybe nobody would notice?\r\n3. Iterate the keys/values of such objects and recurse in the serialization algorithm.\r\n    - This gives us cyclic object support and correct handling of Infinity/NaN/etc.\r\n    - But most non-trivial non-POJO objects contain unserializable things like functions.\r\n    - We can attempt to replace those unserializable things with `undefined`, but it only works one layer deep. i.e. if there's a non-POJO object like `{ fn: () => {} }`, it'll be turned into `{ fn: undefined }`, but if it's like `{ events: { fn: () => {} } }`, then the entire serialization operation must be aborted and an error thrown.\r\n\r\nI'm leaning towards (1), since I don't think it really makes sense to be trying to send `window.location` or a `WebContents` value over IPC, and places where we're doing that are likely error-prone. Thoughts?"},{"url":"https://api.github.com/repos/electron/electron/issues/comments/534692035","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-534692035","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":534692035,"node_id":"MDEyOklzc3VlQ29tbWVudDUzNDY5MjAzNQ==","user":{"login":"MarshallOfSound","id":6634592,"node_id":"MDQ6VXNlcjY2MzQ1OTI=","avatar_url":"https://avatars3.githubusercontent.com/u/6634592?v=4","gravatar_id":"","url":"https://api.github.com/users/MarshallOfSound","html_url":"https://github.com/MarshallOfSound","followers_url":"https://api.github.com/users/MarshallOfSound/followers","following_url":"https://api.github.com/users/MarshallOfSound/following{/other_user}","gists_url":"https://api.github.com/users/MarshallOfSound/gists{/gist_id}","starred_url":"https://api.github.com/users/MarshallOfSound/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/MarshallOfSound/subscriptions","organizations_url":"https://api.github.com/users/MarshallOfSound/orgs","repos_url":"https://api.github.com/users/MarshallOfSound/repos","events_url":"https://api.github.com/users/MarshallOfSound/events{/privacy}","received_events_url":"https://api.github.com/users/MarshallOfSound/received_events","type":"User","site_admin":false},"created_at":"2019-09-24T18:37:09Z","updated_at":"2019-09-24T18:37:09Z","author_association":"MEMBER","body":"I don't like the idea of existing code throwing errors in an obscure and un-lintable way.  i.e. we can't provide a lint rule or other tool to detect invalid usages of `ipc.send` so folks will only find out at runtime when it's too late and hard to spot.\r\n\r\nI'm leaning towards something equivalent to (2) where if the v8 serializer fails we fall back to the old one.  Maybe log a console warning that you tried to send an unserializable object and we fell back to a less accurate converter?"},{"url":"https://api.github.com/repos/electron/electron/issues/comments/534705193","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-534705193","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":534705193,"node_id":"MDEyOklzc3VlQ29tbWVudDUzNDcwNTE5Mw==","user":{"login":"nornagon","id":172800,"node_id":"MDQ6VXNlcjE3MjgwMA==","avatar_url":"https://avatars2.githubusercontent.com/u/172800?v=4","gravatar_id":"","url":"https://api.github.com/users/nornagon","html_url":"https://github.com/nornagon","followers_url":"https://api.github.com/users/nornagon/followers","following_url":"https://api.github.com/users/nornagon/following{/other_user}","gists_url":"https://api.github.com/users/nornagon/gists{/gist_id}","starred_url":"https://api.github.com/users/nornagon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nornagon/subscriptions","organizations_url":"https://api.github.com/users/nornagon/orgs","repos_url":"https://api.github.com/users/nornagon/repos","events_url":"https://api.github.com/users/nornagon/events{/privacy}","received_events_url":"https://api.github.com/users/nornagon/received_events","type":"User","site_admin":false},"created_at":"2019-09-24T19:08:48Z","updated_at":"2019-09-24T19:08:48Z","author_association":"MEMBER","body":"Does that leave any path towards eventually eliminating the old converter? I'm disinclined to leave it there forever... but maybe it would make sense as a less-dramatic deprecation strategy? e.g. \"Looks like you sent a non-standard object over IPC. This is probably not what you intended to do, but we obliged and serialized it anyway. Look out, this will throw an exception in Electron 9.\""},{"url":"https://api.github.com/repos/electron/electron/issues/comments/534740833","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-534740833","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":534740833,"node_id":"MDEyOklzc3VlQ29tbWVudDUzNDc0MDgzMw==","user":{"login":"MarshallOfSound","id":6634592,"node_id":"MDQ6VXNlcjY2MzQ1OTI=","avatar_url":"https://avatars3.githubusercontent.com/u/6634592?v=4","gravatar_id":"","url":"https://api.github.com/users/MarshallOfSound","html_url":"https://github.com/MarshallOfSound","followers_url":"https://api.github.com/users/MarshallOfSound/followers","following_url":"https://api.github.com/users/MarshallOfSound/following{/other_user}","gists_url":"https://api.github.com/users/MarshallOfSound/gists{/gist_id}","starred_url":"https://api.github.com/users/MarshallOfSound/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/MarshallOfSound/subscriptions","organizations_url":"https://api.github.com/users/MarshallOfSound/orgs","repos_url":"https://api.github.com/users/MarshallOfSound/repos","events_url":"https://api.github.com/users/MarshallOfSound/events{/privacy}","received_events_url":"https://api.github.com/users/MarshallOfSound/received_events","type":"User","site_admin":false},"created_at":"2019-09-24T20:46:20Z","updated_at":"2019-09-24T20:46:20Z","author_association":"MEMBER","body":"I'd be down for a **very** long term deprecation strategy here.  Like we should support serialization for I'd say 4 versions beyond when this lands (number picked to match the number of versions we used for the native module deprecation).\r\n\r\nThe deprecation log should include the object itself as well if possible 🤔 "},{"url":"https://api.github.com/repos/electron/electron/issues/comments/534770157","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-534770157","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":534770157,"node_id":"MDEyOklzc3VlQ29tbWVudDUzNDc3MDE1Nw==","user":{"login":"nornagon","id":172800,"node_id":"MDQ6VXNlcjE3MjgwMA==","avatar_url":"https://avatars2.githubusercontent.com/u/172800?v=4","gravatar_id":"","url":"https://api.github.com/users/nornagon","html_url":"https://github.com/nornagon","followers_url":"https://api.github.com/users/nornagon/followers","following_url":"https://api.github.com/users/nornagon/following{/other_user}","gists_url":"https://api.github.com/users/nornagon/gists{/gist_id}","starred_url":"https://api.github.com/users/nornagon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nornagon/subscriptions","organizations_url":"https://api.github.com/users/nornagon/orgs","repos_url":"https://api.github.com/users/nornagon/repos","events_url":"https://api.github.com/users/nornagon/events{/privacy}","received_events_url":"https://api.github.com/users/nornagon/received_events","type":"User","site_admin":false},"created_at":"2019-09-24T22:15:23Z","updated_at":"2019-09-24T22:18:48Z","author_association":"MEMBER","body":"@MarshallOfSound I'm not sure that's warranted. 99% of cases where IPC is used, the new version should still work fine. Only in weird cases where it only kind of semi-works currently are problematic.\r\n\r\nFor example. The `new-window` event has as one of its arguments the `options` parameter, which is the options passed to `new BrowserWindow()`. One of these options is `webContents`, which specifies which WebContents will go in the new window. For WebViews, the `new-window` event is proxied over to the host frame. However, during that transmission, the `webContents` key stops being an actual `WebContents`. Is anything depending on that key being there in the webview host? I don't think so. Can anything actually useful be done with it there? Again, I don't think so. The fact that it's there is an accident, and it never really performed any kind of useful function.\r\n\r\nAlso, it's trivial to get something close to the old behavior with the transformation `x => JSON.parse(JSON.stringify(x))`, as long as `x` isn't cyclic (but if it was, the cyclic bit is getting `null`ed out currently anyway).\r\n\r\n**tldr** most people wouldn't need to fix anything if this sort of usage started throwing an error, and for those that do, the fix is easy."},{"url":"https://api.github.com/repos/electron/electron/issues/comments/534778673","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-534778673","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":534778673,"node_id":"MDEyOklzc3VlQ29tbWVudDUzNDc3ODY3Mw==","user":{"login":"MarshallOfSound","id":6634592,"node_id":"MDQ6VXNlcjY2MzQ1OTI=","avatar_url":"https://avatars3.githubusercontent.com/u/6634592?v=4","gravatar_id":"","url":"https://api.github.com/users/MarshallOfSound","html_url":"https://github.com/MarshallOfSound","followers_url":"https://api.github.com/users/MarshallOfSound/followers","following_url":"https://api.github.com/users/MarshallOfSound/following{/other_user}","gists_url":"https://api.github.com/users/MarshallOfSound/gists{/gist_id}","starred_url":"https://api.github.com/users/MarshallOfSound/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/MarshallOfSound/subscriptions","organizations_url":"https://api.github.com/users/MarshallOfSound/orgs","repos_url":"https://api.github.com/users/MarshallOfSound/repos","events_url":"https://api.github.com/users/MarshallOfSound/events{/privacy}","received_events_url":"https://api.github.com/users/MarshallOfSound/received_events","type":"User","site_admin":false},"created_at":"2019-09-24T22:52:11Z","updated_at":"2019-09-24T22:52:11Z","author_association":"MEMBER","body":"> if this sort of usage started throwing an error\r\n\r\nMy only concern here was that you can't glance at a bit of code and say \"that's gonna cause a problem\".  In fact I don't think you could describe the kinds of things that would cause this problem very easily at all.  That's the only reason I'm advocating for a deprecation cycle, it will take time for people to find all the edge cases in their app that might do this.  Maybe 4 versions was a bit over-eager 🤷‍♂But it should definitely go through a cycle where the old code still works but tells you you're doing something bad."},{"url":"https://api.github.com/repos/electron/electron/issues/comments/535169992","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-535169992","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":535169992,"node_id":"MDEyOklzc3VlQ29tbWVudDUzNTE2OTk5Mg==","user":{"login":"nornagon","id":172800,"node_id":"MDQ6VXNlcjE3MjgwMA==","avatar_url":"https://avatars2.githubusercontent.com/u/172800?v=4","gravatar_id":"","url":"https://api.github.com/users/nornagon","html_url":"https://github.com/nornagon","followers_url":"https://api.github.com/users/nornagon/followers","following_url":"https://api.github.com/users/nornagon/following{/other_user}","gists_url":"https://api.github.com/users/nornagon/gists{/gist_id}","starred_url":"https://api.github.com/users/nornagon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nornagon/subscriptions","organizations_url":"https://api.github.com/users/nornagon/orgs","repos_url":"https://api.github.com/users/nornagon/repos","events_url":"https://api.github.com/users/nornagon/events{/privacy}","received_events_url":"https://api.github.com/users/nornagon/received_events","type":"User","site_admin":false},"created_at":"2019-09-25T19:14:29Z","updated_at":"2019-09-25T19:14:29Z","author_association":"MEMBER","body":"The things which will throw exceptions with structured clone that don't with base::Value serialization:\r\n- DOM objects (`Element`, `Location`, etc.)\r\n- special Node objects like `process.env` or http internals\r\n- special Electron API objects like WebContents\r\n- functions\r\n\r\nI've updated the PR to fall back to the base::Value-based serialization if structured clone fails, and emit a deprecation warning."},{"url":"https://api.github.com/repos/electron/electron/issues/comments/535186584","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-535186584","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":535186584,"node_id":"MDEyOklzc3VlQ29tbWVudDUzNTE4NjU4NA==","user":{"login":"nornagon","id":172800,"node_id":"MDQ6VXNlcjE3MjgwMA==","avatar_url":"https://avatars2.githubusercontent.com/u/172800?v=4","gravatar_id":"","url":"https://api.github.com/users/nornagon","html_url":"https://github.com/nornagon","followers_url":"https://api.github.com/users/nornagon/followers","following_url":"https://api.github.com/users/nornagon/following{/other_user}","gists_url":"https://api.github.com/users/nornagon/gists{/gist_id}","starred_url":"https://api.github.com/users/nornagon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nornagon/subscriptions","organizations_url":"https://api.github.com/users/nornagon/orgs","repos_url":"https://api.github.com/users/nornagon/repos","events_url":"https://api.github.com/users/nornagon/events{/privacy}","received_events_url":"https://api.github.com/users/nornagon/received_events","type":"User","site_admin":false},"created_at":"2019-09-25T19:57:30Z","updated_at":"2019-09-25T19:57:30Z","author_association":"MEMBER","body":"The last remaining tricky thing is that sending a `Buffer` will result in the other side receiving a `Uint8Array`. Without patching V8, I don't see a good way to get around this. Fortunately, you can wrap a `Buffer` around a `Uint8Array` quite easily:\r\n\r\n```\r\nconst uint8Array = await ipcRenderer.invoke('return-a-buffer')\r\nconst buf = Buffer.from(uint8Array.buffer)\r\n```"},{"url":"https://api.github.com/repos/electron/electron/issues/comments/535187110","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-535187110","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":535187110,"node_id":"MDEyOklzc3VlQ29tbWVudDUzNTE4NzExMA==","user":{"login":"nornagon","id":172800,"node_id":"MDQ6VXNlcjE3MjgwMA==","avatar_url":"https://avatars2.githubusercontent.com/u/172800?v=4","gravatar_id":"","url":"https://api.github.com/users/nornagon","html_url":"https://github.com/nornagon","followers_url":"https://api.github.com/users/nornagon/followers","following_url":"https://api.github.com/users/nornagon/following{/other_user}","gists_url":"https://api.github.com/users/nornagon/gists{/gist_id}","starred_url":"https://api.github.com/users/nornagon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nornagon/subscriptions","organizations_url":"https://api.github.com/users/nornagon/orgs","repos_url":"https://api.github.com/users/nornagon/repos","events_url":"https://api.github.com/users/nornagon/events{/privacy}","received_events_url":"https://api.github.com/users/nornagon/received_events","type":"User","site_admin":false},"created_at":"2019-09-25T19:58:39Z","updated_at":"2019-09-25T19:58:39Z","author_association":"MEMBER","body":"Taking off the [wip] as I believe this is ready for full review."},{"url":"https://api.github.com/repos/electron/electron/issues/comments/538499039","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-538499039","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":538499039,"node_id":"MDEyOklzc3VlQ29tbWVudDUzODQ5OTAzOQ==","user":{"login":"miniak","id":1281234,"node_id":"MDQ6VXNlcjEyODEyMzQ=","avatar_url":"https://avatars3.githubusercontent.com/u/1281234?v=4","gravatar_id":"","url":"https://api.github.com/users/miniak","html_url":"https://github.com/miniak","followers_url":"https://api.github.com/users/miniak/followers","following_url":"https://api.github.com/users/miniak/following{/other_user}","gists_url":"https://api.github.com/users/miniak/gists{/gist_id}","starred_url":"https://api.github.com/users/miniak/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/miniak/subscriptions","organizations_url":"https://api.github.com/users/miniak/orgs","repos_url":"https://api.github.com/users/miniak/repos","events_url":"https://api.github.com/users/miniak/events{/privacy}","received_events_url":"https://api.github.com/users/miniak/received_events","type":"User","site_admin":false},"created_at":"2019-10-04T17:54:45Z","updated_at":"2019-10-04T17:55:03Z","author_association":"MEMBER","body":"this will allow us to simplify the serialization in the `remote` module. #20427"},{"url":"https://api.github.com/repos/electron/electron/issues/comments/540117270","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-540117270","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":540117270,"node_id":"MDEyOklzc3VlQ29tbWVudDU0MDExNzI3MA==","user":{"login":"release-clerk[bot]","id":42386326,"node_id":"MDM6Qm90NDIzODYzMjY=","avatar_url":"https://avatars0.githubusercontent.com/in/16104?v=4","gravatar_id":"","url":"https://api.github.com/users/release-clerk%5Bbot%5D","html_url":"https://github.com/apps/release-clerk","followers_url":"https://api.github.com/users/release-clerk%5Bbot%5D/followers","following_url":"https://api.github.com/users/release-clerk%5Bbot%5D/following{/other_user}","gists_url":"https://api.github.com/users/release-clerk%5Bbot%5D/gists{/gist_id}","starred_url":"https://api.github.com/users/release-clerk%5Bbot%5D/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/release-clerk%5Bbot%5D/subscriptions","organizations_url":"https://api.github.com/users/release-clerk%5Bbot%5D/orgs","repos_url":"https://api.github.com/users/release-clerk%5Bbot%5D/repos","events_url":"https://api.github.com/users/release-clerk%5Bbot%5D/events{/privacy}","received_events_url":"https://api.github.com/users/release-clerk%5Bbot%5D/received_events","type":"Bot","site_admin":false},"created_at":"2019-10-09T17:59:11Z","updated_at":"2019-10-09T17:59:11Z","author_association":"NONE","body":"**Release Notes Persisted**\n\n> IPC between main and renderer processes now uses the Structured Clone Algorithm."},{"url":"https://api.github.com/repos/electron/electron/issues/comments/540619766","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-540619766","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":540619766,"node_id":"MDEyOklzc3VlQ29tbWVudDU0MDYxOTc2Ng==","user":{"login":"Xylobol","id":40412285,"node_id":"MDQ6VXNlcjQwNDEyMjg1","avatar_url":"https://avatars3.githubusercontent.com/u/40412285?v=4","gravatar_id":"","url":"https://api.github.com/users/Xylobol","html_url":"https://github.com/Xylobol","followers_url":"https://api.github.com/users/Xylobol/followers","following_url":"https://api.github.com/users/Xylobol/following{/other_user}","gists_url":"https://api.github.com/users/Xylobol/gists{/gist_id}","starred_url":"https://api.github.com/users/Xylobol/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Xylobol/subscriptions","organizations_url":"https://api.github.com/users/Xylobol/orgs","repos_url":"https://api.github.com/users/Xylobol/repos","events_url":"https://api.github.com/users/Xylobol/events{/privacy}","received_events_url":"https://api.github.com/users/Xylobol/received_events","type":"User","site_admin":false},"created_at":"2019-10-10T14:40:42Z","updated_at":"2019-10-10T14:40:42Z","author_association":"NONE","body":"For anyone else interested, these changes have landed in nightly - https://github.com/electron/nightlies/releases/tag/v8.0.0-nightly.20191009"},{"url":"https://api.github.com/repos/electron/electron/issues/comments/545339910","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-545339910","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":545339910,"node_id":"MDEyOklzc3VlQ29tbWVudDU0NTMzOTkxMA==","user":{"login":"gdavidkov","id":5815794,"node_id":"MDQ6VXNlcjU4MTU3OTQ=","avatar_url":"https://avatars0.githubusercontent.com/u/5815794?v=4","gravatar_id":"","url":"https://api.github.com/users/gdavidkov","html_url":"https://github.com/gdavidkov","followers_url":"https://api.github.com/users/gdavidkov/followers","following_url":"https://api.github.com/users/gdavidkov/following{/other_user}","gists_url":"https://api.github.com/users/gdavidkov/gists{/gist_id}","starred_url":"https://api.github.com/users/gdavidkov/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/gdavidkov/subscriptions","organizations_url":"https://api.github.com/users/gdavidkov/orgs","repos_url":"https://api.github.com/users/gdavidkov/repos","events_url":"https://api.github.com/users/gdavidkov/events{/privacy}","received_events_url":"https://api.github.com/users/gdavidkov/received_events","type":"User","site_admin":false},"created_at":"2019-10-23T08:50:33Z","updated_at":"2019-10-23T08:50:33Z","author_association":"NONE","body":"Will this be backported to 6.x?"},{"url":"https://api.github.com/repos/electron/electron/issues/comments/545494783","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-545494783","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":545494783,"node_id":"MDEyOklzc3VlQ29tbWVudDU0NTQ5NDc4Mw==","user":{"login":"nornagon","id":172800,"node_id":"MDQ6VXNlcjE3MjgwMA==","avatar_url":"https://avatars2.githubusercontent.com/u/172800?v=4","gravatar_id":"","url":"https://api.github.com/users/nornagon","html_url":"https://github.com/nornagon","followers_url":"https://api.github.com/users/nornagon/followers","following_url":"https://api.github.com/users/nornagon/following{/other_user}","gists_url":"https://api.github.com/users/nornagon/gists{/gist_id}","starred_url":"https://api.github.com/users/nornagon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nornagon/subscriptions","organizations_url":"https://api.github.com/users/nornagon/orgs","repos_url":"https://api.github.com/users/nornagon/repos","events_url":"https://api.github.com/users/nornagon/events{/privacy}","received_events_url":"https://api.github.com/users/nornagon/received_events","type":"User","site_admin":false},"created_at":"2019-10-23T15:17:41Z","updated_at":"2019-10-23T15:17:41Z","author_association":"MEMBER","body":"No, since it is a breaking change.\n"},{"url":"https://api.github.com/repos/electron/electron/issues/comments/612301761","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-612301761","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":612301761,"node_id":"MDEyOklzc3VlQ29tbWVudDYxMjMwMTc2MQ==","user":{"login":"Slapbox","id":6835891,"node_id":"MDQ6VXNlcjY4MzU4OTE=","avatar_url":"https://avatars2.githubusercontent.com/u/6835891?v=4","gravatar_id":"","url":"https://api.github.com/users/Slapbox","html_url":"https://github.com/Slapbox","followers_url":"https://api.github.com/users/Slapbox/followers","following_url":"https://api.github.com/users/Slapbox/following{/other_user}","gists_url":"https://api.github.com/users/Slapbox/gists{/gist_id}","starred_url":"https://api.github.com/users/Slapbox/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Slapbox/subscriptions","organizations_url":"https://api.github.com/users/Slapbox/orgs","repos_url":"https://api.github.com/users/Slapbox/repos","events_url":"https://api.github.com/users/Slapbox/events{/privacy}","received_events_url":"https://api.github.com/users/Slapbox/received_events","type":"User","site_admin":false},"created_at":"2020-04-11T02:28:50Z","updated_at":"2020-04-11T02:28:50Z","author_association":"CONTRIBUTOR","body":"This PR is noted as a **_Breaking Changes_** for Electron 8.0.0 & 9.0.0 betas.  Is there any difference in the IPC between versions 8 and 9?"},{"url":"https://api.github.com/repos/electron/electron/issues/comments/612959454","html_url":"https://github.com/electron/electron/pull/20214#issuecomment-612959454","issue_url":"https://api.github.com/repos/electron/electron/issues/20214","id":612959454,"node_id":"MDEyOklzc3VlQ29tbWVudDYxMjk1OTQ1NA==","user":{"login":"pushkin-","id":6374473,"node_id":"MDQ6VXNlcjYzNzQ0NzM=","avatar_url":"https://avatars3.githubusercontent.com/u/6374473?v=4","gravatar_id":"","url":"https://api.github.com/users/pushkin-","html_url":"https://github.com/pushkin-","followers_url":"https://api.github.com/users/pushkin-/followers","following_url":"https://api.github.com/users/pushkin-/following{/other_user}","gists_url":"https://api.github.com/users/pushkin-/gists{/gist_id}","starred_url":"https://api.github.com/users/pushkin-/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/pushkin-/subscriptions","organizations_url":"https://api.github.com/users/pushkin-/orgs","repos_url":"https://api.github.com/users/pushkin-/repos","events_url":"https://api.github.com/users/pushkin-/events{/privacy}","received_events_url":"https://api.github.com/users/pushkin-/received_events","type":"User","site_admin":false},"created_at":"2020-04-13T15:54:22Z","updated_at":"2020-04-13T15:54:22Z","author_association":"NONE","body":"@Slapbox  I believe the plan in 8 is to use the new algorithm, but if it fails, emit a warning and fallback to the old algorithm.\r\n\r\nIn Electron 9, they're going remove the fallback and warning and serializing bad data will start throwing exceptions."}]}
\ No newline at end of file
diff --git a/spec-main/fixtures/release-notes/cache/electron-electron-issue-21497-comments b/spec-main/fixtures/release-notes/cache/electron-electron-issue-21497-comments
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--- /dev/null
+++ b/spec-main/fixtures/release-notes/cache/electron-electron-issue-21497-comments
@@ -0,0 +1 @@
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run backport-to 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run backport-to 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\"8-x-y\"!","performed_via_github_app":null},{"url":"https://api.github.com/repos/electron/electron/issues/comments/600796152","html_url":"https://github.com/electron/electron/pull/21497#issuecomment-600796152","issue_url":"https://api.github.com/repos/electron/electron/issues/21497","id":600796152,"node_id":"MDEyOklzc3VlQ29tbWVudDYwMDc5NjE1Mg==","user":{"login":"MarshallOfSound","id":6634592,"node_id":"MDQ6VXNlcjY2MzQ1OTI=","avatar_url":"https://avatars3.githubusercontent.com/u/6634592?v=4","gravatar_id":"","url":"https://api.github.com/users/MarshallOfSound","html_url":"https://github.com/MarshallOfSound","followers_url":"https://api.github.com/users/MarshallOfSound/followers","following_url":"https://api.github.com/users/MarshallOfSound/following{/other_user}","gists_url":"https://api.github.com/users/MarshallOfSound/gists{/gist_id}","starred_url":"https://api.github.com/users/MarshallOfSound/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/MarshallOfSound/subscriptions","organizations_url":"https://api.github.com/users/MarshallOfSound/orgs","repos_url":"https://api.github.com/users/MarshallOfSound/repos","events_url":"https://api.github.com/users/MarshallOfSound/events{/privacy}","received_events_url":"https://api.github.com/users/MarshallOfSound/received_events","type":"User","site_admin":false},"created_at":"2020-03-18T18:37:39Z","updated_at":"2020-03-18T18:37:39Z","author_association":"MEMBER","body":"/trop run backport-to 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\"9-x-y\"!","performed_via_github_app":null},{"url":"https://api.github.com/repos/electron/electron/issues/comments/600796434","html_url":"https://github.com/electron/electron/pull/21497#issuecomment-600796434","issue_url":"https://api.github.com/repos/electron/electron/issues/21497","id":600796434,"node_id":"MDEyOklzc3VlQ29tbWVudDYwMDc5NjQzNA==","user":{"login":"trop[bot]","id":37223003,"node_id":"MDM6Qm90MzcyMjMwMDM=","avatar_url":"https://avatars1.githubusercontent.com/in/9879?v=4","gravatar_id":"","url":"https://api.github.com/users/trop%5Bbot%5D","html_url":"https://github.com/apps/trop","followers_url":"https://api.github.com/users/trop%5Bbot%5D/followers","following_url":"https://api.github.com/users/trop%5Bbot%5D/following{/other_user}","gists_url":"https://api.github.com/users/trop%5Bbot%5D/gists{/gist_id}","starred_url":"https://api.github.com/users/trop%5Bbot%5D/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/trop%5Bbot%5D/subscriptions","organizations_url":"https://api.github.com/users/trop%5Bbot%5D/orgs","repos_url":"https://api.github.com/users/trop%5Bbot%5D/repos","events_url":"https://api.github.com/users/trop%5Bbot%5D/events{/privacy}","received_events_url":"https://api.github.com/users/trop%5Bbot%5D/received_events","type":"Bot","site_admin":false},"created_at":"2020-03-18T18:38:14Z","updated_at":"2020-03-18T18:38:14Z","author_association":"CONTRIBUTOR","body":"I 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#22749","performed_via_github_app":null},{"url":"https://api.github.com/repos/electron/electron/issues/comments/600796529","html_url":"https://github.com/electron/electron/pull/21497#issuecomment-600796529","issue_url":"https://api.github.com/repos/electron/electron/issues/21497","id":600796529,"node_id":"MDEyOklzc3VlQ29tbWVudDYwMDc5NjUyOQ==","user":{"login":"trop[bot]","id":37223003,"node_id":"MDM6Qm90MzcyMjMwMDM=","avatar_url":"https://avatars1.githubusercontent.com/in/9879?v=4","gravatar_id":"","url":"https://api.github.com/users/trop%5Bbot%5D","html_url":"https://github.com/apps/trop","followers_url":"https://api.github.com/users/trop%5Bbot%5D/followers","following_url":"https://api.github.com/users/trop%5Bbot%5D/following{/other_user}","gists_url":"https://api.github.com/users/trop%5Bbot%5D/gists{/gist_id}","starred_url":"https://api.github.com/users/trop%5Bbot%5D/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/trop%5Bbot%5D/subscriptions","organizations_url":"https://api.github.com/users/trop%5Bbot%5D/orgs","repos_url":"https://api.github.com/users/trop%5Bbot%5D/repos","events_url":"https://api.github.com/users/trop%5Bbot%5D/events{/privacy}","received_events_url":"https://api.github.com/users/trop%5Bbot%5D/received_events","type":"Bot","site_admin":false},"created_at":"2020-03-18T18:38:24Z","updated_at":"2020-03-18T18:38:24Z","author_association":"CONTRIBUTOR","body":"I 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Notes Persisted**\n\n> Fixed a potential crash on faulty `deviceName`s in `webContents.print()`."},{"url":"https://api.github.com/repos/electron/electron/issues/comments/580558572","html_url":"https://github.com/electron/electron/pull/21946#issuecomment-580558572","issue_url":"https://api.github.com/repos/electron/electron/issues/21946","id":580558572,"node_id":"MDEyOklzc3VlQ29tbWVudDU4MDU1ODU3Mg==","user":{"login":"trop[bot]","id":37223003,"node_id":"MDM6Qm90MzcyMjMwMDM=","avatar_url":"https://avatars1.githubusercontent.com/in/9879?v=4","gravatar_id":"","url":"https://api.github.com/users/trop%5Bbot%5D","html_url":"https://github.com/apps/trop","followers_url":"https://api.github.com/users/trop%5Bbot%5D/followers","following_url":"https://api.github.com/users/trop%5Bbot%5D/following{/other_user}","gists_url":"https://api.github.com/users/trop%5Bbot%5D/gists{/gist_id}","starred_url":"https://api.github.com/users/trop%5Bbot%5D/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/trop%5Bbot%5D/subscriptions","organizations_url":"https://api.github.com/users/trop%5Bbot%5D/orgs","repos_url":"https://api.github.com/users/trop%5Bbot%5D/repos","events_url":"https://api.github.com/users/trop%5Bbot%5D/events{/privacy}","received_events_url":"https://api.github.com/users/trop%5Bbot%5D/received_events","type":"Bot","site_admin":false},"created_at":"2020-01-31T02:49:31Z","updated_at":"2020-01-31T02:49:31Z","author_association":"CONTRIBUTOR","body":"I 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was unable to backport this PR to \"6-1-x\" cleanly;\n   you will need to perform this backport manually."},{"url":"https://api.github.com/repos/electron/electron/issues/comments/580558614","html_url":"https://github.com/electron/electron/pull/21946#issuecomment-580558614","issue_url":"https://api.github.com/repos/electron/electron/issues/21946","id":580558614,"node_id":"MDEyOklzc3VlQ29tbWVudDU4MDU1ODYxNA==","user":{"login":"trop[bot]","id":37223003,"node_id":"MDM6Qm90MzcyMjMwMDM=","avatar_url":"https://avatars1.githubusercontent.com/in/9879?v=4","gravatar_id":"","url":"https://api.github.com/users/trop%5Bbot%5D","html_url":"https://github.com/apps/trop","followers_url":"https://api.github.com/users/trop%5Bbot%5D/followers","following_url":"https://api.github.com/users/trop%5Bbot%5D/following{/other_user}","gists_url":"https://api.github.com/users/trop%5Bbot%5D/gists{/gist_id}","starred_url":"https://api.github.com/users/trop%5Bbot%5D/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/trop%5Bbot%5D/subscriptions","organizations_url":"https://api.github.com/users/trop%5Bbot%5D/orgs","repos_url":"https://api.github.com/users/trop%5Bbot%5D/repos","events_url":"https://api.github.com/users/trop%5Bbot%5D/events{/privacy}","received_events_url":"https://api.github.com/users/trop%5Bbot%5D/received_events","type":"Bot","site_admin":false},"created_at":"2020-01-31T02:49:43Z","updated_at":"2020-01-31T02:49:43Z","author_association":"CONTRIBUTOR","body":"I 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has manually backported this PR to \"7-1-x\", please check out #22012"}]}
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We now require semicolon in JS files.","performed_via_github_app":null},{"url":"https://api.github.com/repos/electron/electron/issues/comments/603185839","html_url":"https://github.com/electron/electron/pull/22770#issuecomment-603185839","issue_url":"https://api.github.com/repos/electron/electron/issues/22770","id":603185839,"node_id":"MDEyOklzc3VlQ29tbWVudDYwMzE4NTgzOQ==","user":{"login":"CezaryKulakowski","id":50166166,"node_id":"MDQ6VXNlcjUwMTY2MTY2","avatar_url":"https://avatars2.githubusercontent.com/u/50166166?v=4","gravatar_id":"","url":"https://api.github.com/users/CezaryKulakowski","html_url":"https://github.com/CezaryKulakowski","followers_url":"https://api.github.com/users/CezaryKulakowski/followers","following_url":"https://api.github.com/users/CezaryKulakowski/following{/other_user}","gists_url":"https://api.github.com/users/CezaryKulakowski/gists{/gist_id}","starred_url":"https://api.github.com/users/CezaryKulakowski/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/CezaryKulakowski/subscriptions","organizations_url":"https://api.github.com/users/CezaryKulakowski/orgs","repos_url":"https://api.github.com/users/CezaryKulakowski/repos","events_url":"https://api.github.com/users/CezaryKulakowski/events{/privacy}","received_events_url":"https://api.github.com/users/CezaryKulakowski/received_events","type":"User","site_admin":false},"created_at":"2020-03-24T11:30:17Z","updated_at":"2020-03-24T11:30:17Z","author_association":"CONTRIBUTOR","body":"@zcbenz I've made a rebase to the newest master. I've also squashed two commits into one.","performed_via_github_app":null},{"url":"https://api.github.com/repos/electron/electron/issues/comments/603601083","html_url":"https://github.com/electron/electron/pull/22770#issuecomment-603601083","issue_url":"https://api.github.com/repos/electron/electron/issues/22770","id":603601083,"node_id":"MDEyOklzc3VlQ29tbWVudDYwMzYwMTA4Mw==","user":{"login":"release-clerk[bot]","id":42386326,"node_id":"MDM6Qm90NDIzODYzMjY=","avatar_url":"https://avatars0.githubusercontent.com/in/16104?v=4","gravatar_id":"","url":"https://api.github.com/users/release-clerk%5Bbot%5D","html_url":"https://github.com/apps/release-clerk","followers_url":"https://api.github.com/users/release-clerk%5Bbot%5D/followers","following_url":"https://api.github.com/users/release-clerk%5Bbot%5D/following{/other_user}","gists_url":"https://api.github.com/users/release-clerk%5Bbot%5D/gists{/gist_id}","starred_url":"https://api.github.com/users/release-clerk%5Bbot%5D/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/release-clerk%5Bbot%5D/subscriptions","organizations_url":"https://api.github.com/users/release-clerk%5Bbot%5D/orgs","repos_url":"https://api.github.com/users/release-clerk%5Bbot%5D/repos","events_url":"https://api.github.com/users/release-clerk%5Bbot%5D/events{/privacy}","received_events_url":"https://api.github.com/users/release-clerk%5Bbot%5D/received_events","type":"Bot","site_admin":false},"created_at":"2020-03-25T02:13:47Z","updated_at":"2020-03-25T02:13:47Z","author_association":"NONE","body":"**Release Notes Persisted**\n\n> don't allow window to go behind menu bar on mac","performed_via_github_app":null},{"url":"https://api.github.com/repos/electron/electron/issues/comments/603601148","html_url":"https://github.com/electron/electron/pull/22770#issuecomment-603601148","issue_url":"https://api.github.com/repos/electron/electron/issues/22770","id":603601148,"node_id":"MDEyOklzc3VlQ29tbWVudDYwMzYwMTE0OA==","user":{"login":"trop[bot]","id":37223003,"node_id":"MDM6Qm90MzcyMjMwMDM=","avatar_url":"https://avatars1.githubusercontent.com/in/9879?v=4","gravatar_id":"","url":"https://api.github.com/users/trop%5Bbot%5D","html_url":"https://github.com/apps/trop","followers_url":"https://api.github.com/users/trop%5Bbot%5D/followers","following_url":"https://api.github.com/users/trop%5Bbot%5D/following{/other_user}","gists_url":"https://api.github.com/users/trop%5Bbot%5D/gists{/gist_id}","starred_url":"https://api.github.com/users/trop%5Bbot%5D/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/trop%5Bbot%5D/subscriptions","organizations_url":"https://api.github.com/users/trop%5Bbot%5D/orgs","repos_url":"https://api.github.com/users/trop%5Bbot%5D/repos","events_url":"https://api.github.com/users/trop%5Bbot%5D/events{/privacy}","received_events_url":"https://api.github.com/users/trop%5Bbot%5D/received_events","type":"Bot","site_admin":false},"created_at":"2020-03-25T02:14:04Z","updated_at":"2020-03-25T02:14:04Z","author_association":"CONTRIBUTOR","body":"I have automatically backported this PR to \"9-x-y\",     please check out #22828","performed_via_github_app":null}]}
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Thanks!","performed_via_github_app":null},{"url":"https://api.github.com/repos/electron/electron/issues/comments/683626788","html_url":"https://github.com/electron/electron/pull/25052#issuecomment-683626788","issue_url":"https://api.github.com/repos/electron/electron/issues/25052","id":683626788,"node_id":"MDEyOklzc3VlQ29tbWVudDY4MzYyNjc4OA==","user":{"login":"release-clerk[bot]","id":42386326,"node_id":"MDM6Qm90NDIzODYzMjY=","avatar_url":"https://avatars0.githubusercontent.com/in/16104?v=4","gravatar_id":"","url":"https://api.github.com/users/release-clerk%5Bbot%5D","html_url":"https://github.com/apps/release-clerk","followers_url":"https://api.github.com/users/release-clerk%5Bbot%5D/followers","following_url":"https://api.github.com/users/release-clerk%5Bbot%5D/following{/other_user}","gists_url":"https://api.github.com/users/release-clerk%5Bbot%5D/gists{/gist_id}","starred_url":"https://api.github.com/users/release-clerk%5Bbot%5D/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/release-clerk%5Bbot%5D/subscriptions","organizations_url":"https://api.github.com/users/release-clerk%5Bbot%5D/orgs","repos_url":"https://api.github.com/users/release-clerk%5Bbot%5D/repos","events_url":"https://api.github.com/users/release-clerk%5Bbot%5D/events{/privacy}","received_events_url":"https://api.github.com/users/release-clerk%5Bbot%5D/received_events","type":"Bot","site_admin":false},"created_at":"2020-08-31T07:55:53Z","updated_at":"2020-08-31T07:55:53Z","author_association":"NONE","body":"**Release 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has manually backported this PR to \"10-x-y\", please check out 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has manually backported this PR to \"11-x-y\", please check out 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\ No newline at end of file
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Since the GUID was statically derived from the AppUserModelId, PR 2328 had to be reverted because it broke all Apps without code signature when they updated and changed there executable path.\r\n\r\nBased on above behaviors of the Windows API its best to make this an opt-in. The developer has to be aware of the behavior/requirements using the GUID parameter. It also allows the mitigation of unexpected problems with the Tray creation by providing a new GUID.\r\n\r\n<!--\r\nThank you for your Pull Request. Please provide a description above and review\r\nthe requirements below.\r\n\r\nContributors guide: https://github.com/electron/electron/blob/master/CONTRIBUTING.md\r\n-->\r\n\r\n#### Checklist\r\n<!-- Remove items that do not apply. 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\ No newline at end of file
diff --git a/spec-main/fixtures/snapshots/native-window-open.snapshot.txt b/spec-main/fixtures/snapshots/native-window-open.snapshot.txt
index 95e94c60001db..dfb53bf1ff37a 100644
--- a/spec-main/fixtures/snapshots/native-window-open.snapshot.txt
+++ b/spec-main/fixtures/snapshots/native-window-open.snapshot.txt
@@ -6,14 +6,13 @@
       "returnValue": "placeholder-guest-contents-id"
     },
     "about:blank",
-    "frame name",
+    "frame-name",
     "new-window",
     {
       "show": true,
       "width": 800,
       "height": 600,
       "webContents": "[WebContents]",
-      "title": "frame name",
       "webPreferences": {
         "nativeWindowOpen": true,
         "sandbox": true,
@@ -27,6 +26,7 @@
       "resizable": false,
       "x": 10,
       "y": 5,
+      "title": "cool",
       "backgroundColor": "blue",
       "focusable": false
     },
@@ -44,14 +44,13 @@
       "returnValue": "placeholder-guest-contents-id"
     },
     "about:blank",
-    "frame name",
+    "frame-name",
     "new-window",
     {
       "show": true,
       "width": 800,
       "height": 600,
       "webContents": "[WebContents]",
-      "title": "frame name",
       "webPreferences": {
         "zoomFactor": "2",
         "nativeWindowOpen": true,
@@ -64,6 +63,7 @@
       "resizable": false,
       "x": 0,
       "y": 10,
+      "title": "cool",
       "backgroundColor": "blue",
       "focusable": false
     },
@@ -81,14 +81,13 @@
       "returnValue": "placeholder-guest-contents-id"
     },
     "about:blank",
-    "frame name",
+    "frame-name",
     "new-window",
     {
       "show": true,
       "width": 800,
       "height": 600,
       "webContents": "[WebContents]",
-      "title": "frame name",
       "webPreferences": {
         "nativeWindowOpen": true,
         "sandbox": true,
@@ -100,6 +99,7 @@
       "backgroundColor": "gray",
       "x": 100,
       "y": 100,
+      "title": "cool",
       "focusable": false
     },
     [],
@@ -116,14 +116,13 @@
       "returnValue": "placeholder-guest-contents-id"
     },
     "about:blank",
-    "frame name",
+    "frame-name",
     "new-window",
     {
       "show": true,
       "width": 800,
       "height": 600,
       "webContents": "[WebContents]",
-      "title": "sup",
       "webPreferences": {
         "nativeWindowOpen": true,
         "sandbox": true,
@@ -134,6 +133,7 @@
       },
       "x": 50,
       "y": 20,
+      "title": "sup",
       "backgroundColor": "blue",
       "focusable": false
     },
@@ -151,14 +151,13 @@
       "returnValue": "placeholder-guest-contents-id"
     },
     "about:blank",
-    "frame name",
+    "frame-name",
     "new-window",
     {
       "show": false,
       "width": 800,
       "height": 600,
       "webContents": "[WebContents]",
-      "title": "frame name",
       "webPreferences": {
         "nativeWindowOpen": true,
         "sandbox": true,
@@ -171,6 +170,7 @@
       "left": 1,
       "x": 1,
       "y": 1,
+      "title": "cool",
       "backgroundColor": "blue",
       "focusable": false
     },
diff --git a/spec-main/fixtures/snapshots/proxy-window-open.snapshot.txt b/spec-main/fixtures/snapshots/proxy-window-open.snapshot.txt
index 66020217d7f5c..980031248728e 100644
--- a/spec-main/fixtures/snapshots/proxy-window-open.snapshot.txt
+++ b/spec-main/fixtures/snapshots/proxy-window-open.snapshot.txt
@@ -3,10 +3,11 @@
     "top=5,left=10,resizable=no",
     {
       "sender": "[WebContents]",
-      "frameId": 1
+      "frameId": 1,
+      "processId": "placeholder-process-id"
     },
     "about:blank",
-    "frame name",
+    "frame-name",
     "new-window",
     {
       "top": 5,
@@ -14,7 +15,7 @@
       "resizable": false,
       "x": 10,
       "y": 5,
-      "title": "frame name",
+      "title": "frame-name",
       "webPreferences": {
         "nodeIntegration": false,
         "webviewTag": false,
@@ -36,16 +37,17 @@
     "zoomFactor=2,resizable=0,x=0,y=10",
     {
       "sender": "[WebContents]",
-      "frameId": 1
+      "frameId": 1,
+      "processId": "placeholder-process-id"
     },
     "about:blank",
-    "frame name",
+    "frame-name",
     "new-window",
     {
       "resizable": false,
       "x": 0,
       "y": 10,
-      "title": "frame name",
+      "title": "frame-name",
       "webPreferences": {
         "zoomFactor": "2",
         "nodeIntegration": false,
@@ -68,10 +70,11 @@
     "backgroundColor=gray,webPreferences=0,x=100,y=100",
     {
       "sender": "[WebContents]",
-      "frameId": 1
+      "frameId": 1,
+      "processId": "placeholder-process-id"
     },
     "about:blank",
-    "frame name",
+    "frame-name",
     "new-window",
     {
       "backgroundColor": "gray",
@@ -84,7 +87,7 @@
       },
       "x": 100,
       "y": 100,
-      "title": "frame name",
+      "title": "frame-name",
       "width": 800,
       "height": 600,
       "show": false
@@ -100,10 +103,11 @@
     "x=50,y=20,title=sup",
     {
       "sender": "[WebContents]",
-      "frameId": 1
+      "frameId": 1,
+      "processId": "placeholder-process-id"
     },
     "about:blank",
-    "frame name",
+    "frame-name",
     "new-window",
     {
       "x": 50,
@@ -130,10 +134,11 @@
     "show=false,top=1,left=1",
     {
       "sender": "[WebContents]",
-      "frameId": 1
+      "frameId": 1,
+      "processId": "placeholder-process-id"
     },
     "about:blank",
-    "frame name",
+    "frame-name",
     "new-window",
     {
       "show": false,
@@ -141,7 +146,7 @@
       "left": 1,
       "x": 1,
       "y": 1,
-      "title": "frame name",
+      "title": "frame-name",
       "webPreferences": {
         "nodeIntegration": false,
         "webviewTag": false,
diff --git a/spec-main/guest-window-manager-spec.ts b/spec-main/guest-window-manager-spec.ts
index c8b9f216f50af..5c15ead674ae9 100644
--- a/spec-main/guest-window-manager-spec.ts
+++ b/spec-main/guest-window-manager-spec.ts
@@ -9,7 +9,7 @@ function genSnapshot (browserWindow: BrowserWindow, features: string) {
     browserWindow.webContents.on('new-window', (...args: any[]) => {
       resolve([features, ...args]);
     });
-    browserWindow.webContents.executeJavaScript(`window.open('about:blank', 'frame name', '${features}')`);
+    browserWindow.webContents.executeJavaScript(`window.open('about:blank', 'frame-name', '${features}') && true`);
   });
 }
 
@@ -94,6 +94,9 @@ function stringifySnapshots (snapshots: any, pretty = false) {
     if (key === 'openerId' && typeof value === 'number') {
       return 'placeholder-opener-id';
     }
+    if (key === 'processId' && typeof value === 'number') {
+      return 'placeholder-process-id';
+    }
     if (key === 'returnValue') {
       return 'placeholder-guest-contents-id';
     }
diff --git a/spec-main/index.js b/spec-main/index.js
index 6753378270a9f..c2ab15717c79a 100644
--- a/spec-main/index.js
+++ b/spec-main/index.js
@@ -4,6 +4,13 @@ const v8 = require('v8');
 
 Module.globalPaths.push(path.resolve(__dirname, '../spec/node_modules'));
 
+// Extra module paths which can be used to load Mocha reporters
+if (process.env.ELECTRON_TEST_EXTRA_MODULE_PATHS) {
+  for (const modulePath of process.env.ELECTRON_TEST_EXTRA_MODULE_PATHS.split(':')) {
+    Module.globalPaths.push(modulePath);
+  }
+}
+
 // We want to terminate on errors, not throw up a dialog
 process.on('uncaughtException', (err) => {
   console.error('Unhandled exception in main spec runner:', err);
diff --git a/spec-main/package.json b/spec-main/package.json
index 042bc9b30b609..40b3aa76a8591 100644
--- a/spec-main/package.json
+++ b/spec-main/package.json
@@ -4,10 +4,12 @@
   "main": "index.js",
   "version": "0.1.0",
   "devDependencies": {
+    "@types/sinon": "^9.0.4",
     "@types/ws": "^7.2.0",
     "busboy": "^0.3.1",
     "echo": "file:fixtures/native-addon/echo",
     "q": "^1.5.1",
+    "sinon": "^9.0.1",
     "ws": "^7.2.1"
   },
   "dependencies": {
diff --git a/spec-main/release-notes-spec.ts b/spec-main/release-notes-spec.ts
new file mode 100644
index 0000000000000..b61c48d49446b
--- /dev/null
+++ b/spec-main/release-notes-spec.ts
@@ -0,0 +1,213 @@
+import { GitProcess, IGitExecutionOptions, IGitResult } from 'dugite';
+import { expect } from 'chai';
+import * as notes from '../script/release/notes/notes.js';
+import * as path from 'path';
+import * as sinon from 'sinon';
+
+/* Fake a Dugite GitProcess that only returns the specific
+   commits that we want to test */
+
+class Commit {
+  sha1: string;
+  subject: string;
+  constructor (sha1: string, subject: string) {
+    this.sha1 = sha1;
+    this.subject = subject;
+  }
+}
+
+class GitFake {
+  branches: {
+    [key: string]: Commit[],
+  };
+
+  constructor () {
+    this.branches = {};
+  }
+
+  setBranch (name: string, commits: Array<Commit>): void {
+    this.branches[name] = commits;
+  }
+
+  // find the newest shared commit between branches a and b
+  mergeBase (a: string, b:string): string {
+    for (const commit of [...this.branches[a].reverse()]) {
+      if (this.branches[b].map((commit: Commit) => commit.sha1).includes(commit.sha1)) {
+        return commit.sha1;
+      }
+    }
+    console.error('test error: branches not related');
+    return '';
+  }
+
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  exec (args: string[], path: string, options?: IGitExecutionOptions | undefined): Promise<IGitResult> {
+    let stdout = '';
+    const stderr = '';
+    const exitCode = 0;
+
+    if (args.length === 3 && args[0] === 'merge-base') {
+      // expected form: `git merge-base branchName1 branchName2`
+      const a: string = args[1]!;
+      const b: string = args[2]!;
+      stdout = this.mergeBase(a, b);
+    } else if (args.length === 3 && args[0] === 'log' && args[1] === '--format=%H') {
+      // exepcted form: `git log --format=%H branchName
+      const branch: string = args[2]!;
+      stdout = this.branches[branch].map((commit: Commit) => commit.sha1).join('\n');
+    } else if (args.length > 1 && args[0] === 'log' && args.includes('--format=%H,%s')) {
+      // expected form: `git log --format=%H,%s sha1..branchName
+      const [start, branch] = args[args.length - 1].split('..');
+      const lines : string[] = [];
+      let started = false;
+      for (const commit of this.branches[branch]) {
+        started = started || commit.sha1 === start;
+        if (started) {
+          lines.push(`${commit.sha1},${commit.subject}` /* %H,%s */);
+        }
+      }
+      stdout = lines.join('\n');
+    } else if (args.length === 6 &&
+               args[0] === 'branch' &&
+               args[1] === '--all' &&
+               args[2] === '--contains' &&
+               args[3].endsWith('-x-y')) {
+      // "what branch is this tag in?"
+      // git branch --all --contains ${ref} --sort version:refname
+      stdout = args[3];
+    } else {
+      console.error('unhandled GitProcess.exec():', args);
+    }
+
+    return Promise.resolve({ exitCode, stdout, stderr });
+  }
+}
+
+describe('release notes', () => {
+  const sandbox = sinon.createSandbox();
+  const gitFake = new GitFake();
+
+  const oldBranch = '8-x-y';
+  const newBranch = '9-x-y';
+
+  // commits shared by both oldBranch and newBranch
+  const sharedHistory = [
+    new Commit('2abea22b4bffa1626a521711bacec7cd51425818', "fix: explicitly cancel redirects when mode is 'error' (#20686)"),
+    new Commit('467409458e716c68b35fa935d556050ca6bed1c4', 'build: add support for automated minor releases (#20620)') // merge-base
+  ];
+
+  // these commits came after newBranch was created
+  const newBreaking = new Commit('2fad53e66b1a2cb6f7dad88fe9bb62d7a461fe98', 'refactor: use v8 serialization for ipc (#20214)');
+  const newFeat = new Commit('89eb309d0b22bd4aec058ffaf983e81e56a5c378', 'feat: allow GUID parameter to avoid systray demotion on Windows  (#21891)');
+  const newFix = new Commit('0600420bac25439fc2067d51c6aaa4ee11770577', "fix: don't allow window to go behind menu bar on mac (#22828)");
+  const oldFix = new Commit('f77bd19a70ac2d708d17ddbe4dc12745ca3a8577', 'fix: prevent menu gc during popup (#20785)');
+
+  // a bug that's fixed in both branches by separate PRs
+  const newTropFix = new Commit('a6ff42c190cb5caf8f3e217748e49183a951491b', 'fix: workaround for hang when preventDefault-ing nativeWindowOpen (#22750)');
+  const oldTropFix = new Commit('8751f485c5a6c8c78990bfd55a4350700f81f8cd', 'fix: workaround for hang when preventDefault-ing nativeWindowOpen (#22749)');
+
+  // a PR that has unusual note formatting
+  const sublist = new Commit('61dc1c88fd34a3e8fff80c80ed79d0455970e610', 'fix: client area inset calculation when maximized for framless windows (#25052) (#25216)');
+
+  before(() => {
+    // location of relase-notes' octokit reply cache
+    const fixtureDir = path.resolve(__dirname, 'fixtures', 'release-notes');
+    process.env.NOTES_CACHE_PATH = path.resolve(fixtureDir, 'cache');
+  });
+
+  beforeEach(() => {
+    const wrapper = (args: string[], path: string, options?: IGitExecutionOptions | undefined) => gitFake.exec(args, path, options);
+    sandbox.replace(GitProcess, 'exec', wrapper);
+
+    gitFake.setBranch(oldBranch, [...sharedHistory, oldFix]);
+  });
+
+  afterEach(() => {
+    sandbox.restore();
+  });
+
+  describe('trop annotations', () => {
+    it('shows sibling branches', async function () {
+      const version = 'v9.0.0';
+      gitFake.setBranch(oldBranch, [...sharedHistory, oldTropFix]);
+      gitFake.setBranch(newBranch, [...sharedHistory, newTropFix]);
+      const results: any = await notes.get(oldBranch, newBranch, version);
+      expect(results.fix).to.have.lengthOf(1);
+      expect(results.fix[0].trops).to.have.keys('8-x-y', '9-x-y');
+    });
+  });
+
+  // use case: A malicious contributor could edit the text of their 'Notes:'
+  // in the PR body after a PR's been merged and the maintainers have moved on.
+  // So instead always use the release-clerk PR comment
+  it('uses the release-clerk text', async function () {
+    // realText source: ${fixtureDir}/electron-electron-issue-21891-comments
+    const realText = 'Added GUID parameter to Tray API to avoid system tray icon demotion on Windows';
+    const testCommit = new Commit('89eb309d0b22bd4aec058ffaf983e81e56a5c378', 'feat: lole u got troled hard (#21891)');
+    const version = 'v9.0.0';
+
+    gitFake.setBranch(newBranch, [...sharedHistory, testCommit]);
+    const results: any = await notes.get(oldBranch, newBranch, version);
+    expect(results.feat).to.have.lengthOf(1);
+    expect(results.feat[0].hash).to.equal(testCommit.sha1);
+    expect(results.feat[0].note).to.equal(realText);
+  });
+
+  describe('rendering', () => {
+    it('removes redundant bullet points', async function () {
+      const testCommit = sublist;
+      const version = 'v10.1.1';
+
+      gitFake.setBranch(newBranch, [...sharedHistory, testCommit]);
+      const results: any = await notes.get(oldBranch, newBranch, version);
+      const rendered: any = await notes.render(results);
+
+      expect(rendered).to.not.include('* *');
+    });
+
+    it('indents sublists', async function () {
+      const testCommit = sublist;
+      const version = 'v10.1.1';
+
+      gitFake.setBranch(newBranch, [...sharedHistory, testCommit]);
+      const results: any = await notes.get(oldBranch, newBranch, version);
+      const rendered: any = await notes.render(results);
+
+      expect(rendered).to.include([
+        '* Fixed the following issues for frameless when maximized on Windows:',
+        '  * fix unreachable task bar when auto hidden with position top',
+        '  * fix 1px extending to secondary monitor',
+        '  * fix 1px overflowing into taskbar at certain resolutions',
+        '  * fix white line on top of window under 4k resolutions. [#25216]'].join('\n'));
+    });
+  });
+  // test that when you feed in different semantic commit types,
+  // the parser returns them in the results' correct category
+  describe('semantic commit', () => {
+    const version = 'v9.0.0';
+
+    it("honors 'feat' type", async function () {
+      const testCommit = newFeat;
+      gitFake.setBranch(newBranch, [...sharedHistory, testCommit]);
+      const results: any = await notes.get(oldBranch, newBranch, version);
+      expect(results.feat).to.have.lengthOf(1);
+      expect(results.feat[0].hash).to.equal(testCommit.sha1);
+    });
+
+    it("honors 'fix' type", async function () {
+      const testCommit = newFix;
+      gitFake.setBranch(newBranch, [...sharedHistory, testCommit]);
+      const results: any = await notes.get(oldBranch, newBranch, version);
+      expect(results.fix).to.have.lengthOf(1);
+      expect(results.fix[0].hash).to.equal(testCommit.sha1);
+    });
+
+    it("honors 'BREAKING CHANGE' message", async function () {
+      const testCommit = newBreaking;
+      gitFake.setBranch(newBranch, [...sharedHistory, testCommit]);
+      const results: any = await notes.get(oldBranch, newBranch, version);
+      expect(results.breaking).to.have.lengthOf(1);
+      expect(results.breaking[0].hash).to.equal(testCommit.sha1);
+    });
+  });
+});
diff --git a/spec-main/security-warnings-spec.ts b/spec-main/security-warnings-spec.ts
index 40c8a990d05dc..217cb916262c0 100644
--- a/spec-main/security-warnings-spec.ts
+++ b/spec-main/security-warnings-spec.ts
@@ -22,6 +22,7 @@ describe('security warnings', () => {
   let server: http.Server;
   let w: BrowserWindow;
   let useCsp = true;
+  let useTrustedTypes = false;
   let serverUrl: string;
 
   before((done) => {
@@ -48,8 +49,11 @@ describe('security warnings', () => {
             return;
           }
 
-          const cspHeaders = { 'Content-Security-Policy': 'script-src \'self\' \'unsafe-inline\'' };
-          response.writeHead(200, useCsp ? cspHeaders : undefined);
+          const cspHeaders = [
+            ...(useCsp ? ['script-src \'self\' \'unsafe-inline\''] : []),
+            ...(useTrustedTypes ? ['require-trusted-types-for \'script\'; trusted-types *'] : [])
+          ];
+          response.writeHead(200, { 'Content-Security-Policy': cspHeaders });
           response.write(file, 'binary');
           response.end();
         });
@@ -68,6 +72,7 @@ describe('security warnings', () => {
 
   afterEach(async () => {
     useCsp = true;
+    useTrustedTypes = false;
     await closeWindow(w);
     w = null as unknown as any;
   });
@@ -129,6 +134,22 @@ describe('security warnings', () => {
         expect(message).to.include('Insecure Content-Security-Policy');
       });
 
+      it('should warn about insecure Content-Security-Policy (Trusted Types)', async () => {
+        w = new BrowserWindow({
+          show: false,
+          webPreferences: {
+            enableRemoteModule: false,
+            ...webPreferences
+          }
+        });
+
+        useCsp = false;
+        useTrustedTypes = true;
+        w.loadURL(`${serverUrl}/base-page-security.html`);
+        const [,, message] = await emittedUntil(w.webContents, 'console-message', messageContainsSecurityWarning);
+        expect(message).to.include('Insecure Content-Security-Policy');
+      });
+
       it('should warn about allowRunningInsecureContent', async () => {
         w = new BrowserWindow({
           show: false,
diff --git a/spec-main/webview-spec.ts b/spec-main/webview-spec.ts
index 2d89956c5d99a..434895b6e55f6 100644
--- a/spec-main/webview-spec.ts
+++ b/spec-main/webview-spec.ts
@@ -63,7 +63,6 @@ describe('<webview> tag', function () {
       show: false,
       webPreferences: {
         webviewTag: true,
-        nodeIntegration: true,
         sandbox: true
       }
     });
@@ -76,7 +75,6 @@ describe('<webview> tag', function () {
       show: false,
       webPreferences: {
         webviewTag: true,
-        nodeIntegration: true,
         contextIsolation: true
       }
     });
@@ -89,7 +87,6 @@ describe('<webview> tag', function () {
       show: false,
       webPreferences: {
         webviewTag: true,
-        nodeIntegration: true,
         contextIsolation: true,
         sandbox: true
       }
@@ -98,6 +95,17 @@ describe('<webview> tag', function () {
     await emittedOnce(ipcMain, 'pong');
   });
 
+  it('works with Trusted Types', async () => {
+    const w = new BrowserWindow({
+      show: false,
+      webPreferences: {
+        webviewTag: true
+      }
+    });
+    w.loadFile(path.join(fixtures, 'pages', 'webview-trusted-types.html'));
+    await emittedOnce(ipcMain, 'pong');
+  });
+
   it('is disabled by default', async () => {
     const w = new BrowserWindow({
       show: false,
@@ -651,4 +659,49 @@ describe('<webview> tag', function () {
     generateSpecs('without sandbox', false);
     generateSpecs('with sandbox', true);
   });
+
+  describe('DOM events', () => {
+    afterEach(closeAllWindows);
+    it('receives extra properties on DOM events when contextIsolation is enabled', async () => {
+      const w = new BrowserWindow({
+        show: false,
+        webPreferences: {
+          webviewTag: true,
+          contextIsolation: true
+        }
+      });
+      await w.loadURL('about:blank');
+      const message = await w.webContents.executeJavaScript(`new Promise((resolve, reject) => {
+        const webview = new WebView()
+        webview.setAttribute('src', 'data:text/html,<script>console.log("hi")</script>')
+        webview.addEventListener('console-message', (e) => {
+          resolve(e.message)
+        })
+        document.body.appendChild(webview)
+      })`);
+      expect(message).to.equal('hi');
+    });
+
+    it('emits focus event when contextIsolation is enabled', async () => {
+      const w = new BrowserWindow({
+        show: false,
+        webPreferences: {
+          webviewTag: true,
+          contextIsolation: true
+        }
+      });
+      await w.loadURL('about:blank');
+      await w.webContents.executeJavaScript(`new Promise((resolve, reject) => {
+        const webview = new WebView()
+        webview.setAttribute('src', 'about:blank')
+        webview.addEventListener('dom-ready', () => {
+          webview.focus()
+        })
+        webview.addEventListener('focus', () => {
+          resolve();
+        })
+        document.body.appendChild(webview)
+      })`);
+    });
+  });
 });
diff --git a/spec-main/yarn.lock b/spec-main/yarn.lock
index 0d89278219b31..47042403fc491 100644
--- a/spec-main/yarn.lock
+++ b/spec-main/yarn.lock
@@ -2,11 +2,59 @@
 # yarn lockfile v1
 
 
+"@sinonjs/commons@^1", "@sinonjs/commons@^1.6.0", "@sinonjs/commons@^1.7.0", "@sinonjs/commons@^1.7.2":
+  version "1.8.1"
+  resolved "https://registry.yarnpkg.com/@sinonjs/commons/-/commons-1.8.1.tgz#e7df00f98a203324f6dc7cc606cad9d4a8ab2217"
+  integrity sha512-892K+kWUUi3cl+LlqEWIDrhvLgdL79tECi8JZUyq6IviKy/DNhuzCRlbHUjxK89f4ypPMMaFnFuR9Ie6DoIMsw==
+  dependencies:
+    type-detect "4.0.8"
+
+"@sinonjs/fake-timers@^6.0.0", "@sinonjs/fake-timers@^6.0.1":
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/@sinonjs/fake-timers/-/fake-timers-6.0.1.tgz#293674fccb3262ac782c7aadfdeca86b10c75c40"
+  integrity sha512-MZPUxrmFubI36XS1DI3qmI0YdN1gks62JtFZvxR67ljjSNCeK6U08Zx4msEWOXuofgqUt6zPHSi1H9fbjR/NRA==
+  dependencies:
+    "@sinonjs/commons" "^1.7.0"
+
+"@sinonjs/formatio@^5.0.1":
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/@sinonjs/formatio/-/formatio-5.0.1.tgz#f13e713cb3313b1ab965901b01b0828ea6b77089"
+  integrity sha512-KaiQ5pBf1MpS09MuA0kp6KBQt2JUOQycqVG1NZXvzeaXe5LGFqAKueIS0bw4w0P9r7KuBSVdUk5QjXsUdu2CxQ==
+  dependencies:
+    "@sinonjs/commons" "^1"
+    "@sinonjs/samsam" "^5.0.2"
+
+"@sinonjs/samsam@^5.0.2", "@sinonjs/samsam@^5.1.0":
+  version "5.1.0"
+  resolved "https://registry.yarnpkg.com/@sinonjs/samsam/-/samsam-5.1.0.tgz#3afe719232b541bb6cf3411a4c399a188de21ec0"
+  integrity sha512-42nyaQOVunX5Pm6GRJobmzbS7iLI+fhERITnETXzzwDZh+TtDr/Au3yAvXVjFmZ4wEUaE4Y3NFZfKv0bV0cbtg==
+  dependencies:
+    "@sinonjs/commons" "^1.6.0"
+    lodash.get "^4.4.2"
+    type-detect "^4.0.8"
+
+"@sinonjs/text-encoding@^0.7.1":
+  version "0.7.1"
+  resolved "https://registry.yarnpkg.com/@sinonjs/text-encoding/-/text-encoding-0.7.1.tgz#8da5c6530915653f3a1f38fd5f101d8c3f8079c5"
+  integrity sha512-+iTbntw2IZPb/anVDbypzfQa+ay64MW0Zo8aJ8gZPWMMK6/OubMVb6lUPMagqjOPnmtauXnFCACVl3O7ogjeqQ==
+
 "@types/node@*":
   version "13.7.0"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-13.7.0.tgz#b417deda18cf8400f278733499ad5547ed1abec4"
   integrity sha512-GnZbirvmqZUzMgkFn70c74OQpTTUcCzlhQliTzYjQMqg+hVKcDnxdL19Ne3UdYzdMA/+W3eb646FWn/ZaT1NfQ==
 
+"@types/sinon@^9.0.4":
+  version "9.0.5"
+  resolved "https://registry.yarnpkg.com/@types/sinon/-/sinon-9.0.5.tgz#56b2a12662dd8c7d081cdc511af5f872cb37377f"
+  integrity sha512-4CnkGdM/5/FXDGqL32JQ1ttVrGvhOoesLLF7VnTh4KdjK5N5VQOtxaylFqqTjnHx55MnD9O02Nbk5c1ELC8wlQ==
+  dependencies:
+    "@types/sinonjs__fake-timers" "*"
+
+"@types/sinonjs__fake-timers@*":
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/@types/sinonjs__fake-timers/-/sinonjs__fake-timers-6.0.1.tgz#681df970358c82836b42f989188d133e218c458e"
+  integrity sha512-yYezQwGWty8ziyYLdZjwxyMb0CZR49h8JALHGrxjQHWlqGgc8kLdHEgWrgL0uZ29DMvEVBDnHU2Wg36zKSIUtA==
+
 "@types/ws@^7.2.0":
   version "7.2.1"
   resolved "https://registry.yarnpkg.com/@types/ws/-/ws-7.2.1.tgz#b800f2b8aee694e2b581113643e20d79dd3b8556"
@@ -60,6 +108,11 @@ dicer@0.3.0:
   dependencies:
     streamsearch "0.1.2"
 
+diff@^4.0.2:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/diff/-/diff-4.0.2.tgz#60f3aecb89d5fae520c11aa19efc2bb982aade7d"
+  integrity sha512-58lmxKSA4BNyLz+HHMUzlOEpg09FV+ev6ZMe3vJihgdxzgcwZ8VoEEPmALCZG9LmqfVoNMMKpttIYTVG6uDY7A==
+
 dirty-chai@^2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/dirty-chai/-/dirty-chai-2.0.1.tgz#6b2162ef17f7943589da840abc96e75bda01aff3"
@@ -83,6 +136,16 @@ fast-json-stable-stringify@^2.0.0:
   resolved "https://registry.yarnpkg.com/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz#874bf69c6f404c2b5d99c481341399fd55892633"
   integrity sha512-lhd/wF+Lk98HZoTCtlVraHtfh5XYijIjalXck7saUtuanSDyLMxnHhSXEDJqHxD7msR8D0uCmqlkwjCV8xvwHw==
 
+has-flag@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-4.0.0.tgz#944771fd9c81c81265c4d6941860da06bb59479b"
+  integrity sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==
+
+isarray@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"
+  integrity sha1-ihis/Kmo9Bd+Cav8YDiTmwXR7t8=
+
 json-schema-traverse@^0.4.1:
   version "0.4.1"
   resolved "https://registry.yarnpkg.com/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz#69f6a87d9513ab8bb8fe63bdb0979c448e684660"
@@ -95,6 +158,11 @@ json5@^1.0.1:
   dependencies:
     minimist "^1.2.0"
 
+just-extend@^4.0.2:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/just-extend/-/just-extend-4.1.0.tgz#7278a4027d889601640ee0ce0e5a00b992467da4"
+  integrity sha512-ApcjaOdVTJ7y4r08xI5wIqpvwS48Q0PBG4DJROcEkH1f8MdAiNFyFxz3xoL0LWAVwjrwPYZdVHHxhRHcx/uGLA==
+
 loader-utils@^1.0.0:
   version "1.2.3"
   resolved "https://registry.yarnpkg.com/loader-utils/-/loader-utils-1.2.3.tgz#1ff5dc6911c9f0a062531a4c04b609406108c2c7"
@@ -104,16 +172,39 @@ loader-utils@^1.0.0:
     emojis-list "^2.0.0"
     json5 "^1.0.1"
 
+lodash.get@^4.4.2:
+  version "4.4.2"
+  resolved "https://registry.yarnpkg.com/lodash.get/-/lodash.get-4.4.2.tgz#2d177f652fa31e939b4438d5341499dfa3825e99"
+  integrity sha1-LRd/ZS+jHpObRDjVNBSZ36OCXpk=
+
 minimist@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
   integrity sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=
 
+nise@^4.0.4:
+  version "4.0.4"
+  resolved "https://registry.yarnpkg.com/nise/-/nise-4.0.4.tgz#d73dea3e5731e6561992b8f570be9e363c4512dd"
+  integrity sha512-bTTRUNlemx6deJa+ZyoCUTRvH3liK5+N6VQZ4NIw90AgDXY6iPnsqplNFf6STcj+ePk0H/xqxnP75Lr0J0Fq3A==
+  dependencies:
+    "@sinonjs/commons" "^1.7.0"
+    "@sinonjs/fake-timers" "^6.0.0"
+    "@sinonjs/text-encoding" "^0.7.1"
+    just-extend "^4.0.2"
+    path-to-regexp "^1.7.0"
+
 node-ensure@^0.0.0:
   version "0.0.0"
   resolved "https://registry.yarnpkg.com/node-ensure/-/node-ensure-0.0.0.tgz#ecae764150de99861ec5c810fd5d096b183932a7"
   integrity sha1-7K52QVDemYYexcgQ/V0Jaxg5Mqc=
 
+path-to-regexp@^1.7.0:
+  version "1.8.0"
+  resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-1.8.0.tgz#887b3ba9d84393e87a0a0b9f4cb756198b53548a"
+  integrity sha512-n43JRhlUKUAlibEJhPeir1ncUID16QnEjNpwzNdO3Lm4ywrBpBZ5oLD0I6br9evr1Y9JTqwRtAh7JLoOzAQdVA==
+  dependencies:
+    isarray "0.0.1"
+
 pdfjs-dist@^2.2.228:
   version "2.2.228"
   resolved "https://registry.yarnpkg.com/pdfjs-dist/-/pdfjs-dist-2.2.228.tgz#777b068a0a16c96418433303807c183058b47aaa"
@@ -140,11 +231,36 @@ schema-utils@^0.4.0:
     ajv "^6.1.0"
     ajv-keywords "^3.1.0"
 
+sinon@^9.0.1:
+  version "9.0.3"
+  resolved "https://registry.yarnpkg.com/sinon/-/sinon-9.0.3.tgz#bffc3ec28c936332cd2a41833547b9eed201ecff"
+  integrity sha512-IKo9MIM111+smz9JGwLmw5U1075n1YXeAq8YeSFlndCLhAL5KGn6bLgu7b/4AYHTV/LcEMcRm2wU2YiL55/6Pg==
+  dependencies:
+    "@sinonjs/commons" "^1.7.2"
+    "@sinonjs/fake-timers" "^6.0.1"
+    "@sinonjs/formatio" "^5.0.1"
+    "@sinonjs/samsam" "^5.1.0"
+    diff "^4.0.2"
+    nise "^4.0.4"
+    supports-color "^7.1.0"
+
 streamsearch@0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/streamsearch/-/streamsearch-0.1.2.tgz#808b9d0e56fc273d809ba57338e929919a1a9f1a"
   integrity sha1-gIudDlb8Jz2Am6VzOOkpkZoanxo=
 
+supports-color@^7.1.0:
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-7.2.0.tgz#1b7dcdcb32b8138801b3e478ba6a51caa89648da"
+  integrity sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==
+  dependencies:
+    has-flag "^4.0.0"
+
+type-detect@4.0.8, type-detect@^4.0.8:
+  version "4.0.8"
+  resolved "https://registry.yarnpkg.com/type-detect/-/type-detect-4.0.8.tgz#7646fb5f18871cfbb7749e69bd39a6388eb7450c"
+  integrity sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==
+
 uri-js@^4.2.2:
   version "4.2.2"
   resolved "https://registry.yarnpkg.com/uri-js/-/uri-js-4.2.2.tgz#94c540e1ff772956e2299507c010aea6c8838eb0"
diff --git a/spec/api-native-image-spec.js b/spec/api-native-image-spec.js
index ae5ef33de6a92..71adbfc334308 100644
--- a/spec/api-native-image-spec.js
+++ b/spec/api-native-image-spec.js
@@ -498,6 +498,12 @@ describe('nativeImage module', () => {
       expect(cropB.getSize()).to.deep.equal({ width: 25, height: 64 });
       expect(cropA.toPNG().equals(cropB.toPNG())).to.be.false();
     });
+
+    it('toBitmap() returns a buffer of the right size', () => {
+      const image = nativeImage.createFromPath(path.join(__dirname, 'fixtures', 'assets', 'logo.png'));
+      const crop = image.crop({ width: 25, height: 64, x: 0, y: 0 });
+      expect(crop.toBitmap().length).to.equal(25 * 64 * 4);
+    });
   });
 
   describe('getAspectRatio()', () => {
@@ -563,23 +569,32 @@ describe('nativeImage module', () => {
         buffer: nativeImage.createFromPath(imageDataOne.path).toPNG()
       });
 
+      expect(image.getScaleFactors()).to.deep.equal([1]);
+
       const imageDataTwo = getImage({ width: 2, height: 2 });
       image.addRepresentation({
         scaleFactor: 2.0,
         buffer: nativeImage.createFromPath(imageDataTwo.path).toPNG()
       });
 
+      expect(image.getScaleFactors()).to.deep.equal([1, 2]);
+
       const imageDataThree = getImage({ width: 3, height: 3 });
       image.addRepresentation({
         scaleFactor: 3.0,
         buffer: nativeImage.createFromPath(imageDataThree.path).toPNG()
       });
 
+      expect(image.getScaleFactors()).to.deep.equal([1, 2, 3]);
+
       image.addRepresentation({
         scaleFactor: 4.0,
         buffer: 'invalid'
       });
 
+      // this one failed, so it shouldn't show up in the scale factors
+      expect(image.getScaleFactors()).to.deep.equal([1, 2, 3]);
+
       expect(image.isEmpty()).to.be.false();
       expect(image.getSize()).to.deep.equal({ width: 1, height: 1 });
 
diff --git a/spec/asar-spec.js b/spec/asar-spec.js
index d3c4abc2d1702..328c81b3ee258 100644
--- a/spec/asar-spec.js
+++ b/spec/asar-spec.js
@@ -920,6 +920,16 @@ describe('asar package', function () {
         expect(names).to.deep.equal(['dir1', 'dir2', 'dir3', 'file1', 'file2', 'file3', 'link1', 'link2', 'ping.js']);
       });
 
+      it('supports withFileTypes for a deep directory', function () {
+        const p = path.join(asarDir, 'a.asar', 'dir3');
+        const dirs = fs.readdirSync(p, { withFileTypes: true });
+        for (const dir of dirs) {
+          expect(dir instanceof fs.Dirent).to.be.true();
+        }
+        const names = dirs.map(a => a.name);
+        expect(names).to.deep.equal(['file1', 'file2', 'file3']);
+      });
+
       it('reads dirs from a linked dir', function () {
         const p = path.join(asarDir, 'a.asar', 'link2', 'link2');
         const dirs = fs.readdirSync(p);
diff --git a/spec/chromium-spec.js b/spec/chromium-spec.js
index ac77ebc3ab489..545fb4ccaca3c 100644
--- a/spec/chromium-spec.js
+++ b/spec/chromium-spec.js
@@ -17,6 +17,14 @@ const features = process.electronBinding('features');
 describe('chromium feature', () => {
   const fixtures = path.resolve(__dirname, 'fixtures');
 
+  describe('Badging API', () => {
+    it('does not crash', () => {
+      expect(() => {
+        navigator.setAppBadge(42);
+      }).to.not.throw();
+    });
+  });
+
   describe('heap snapshot', () => {
     it('does not crash', function () {
       process.electronBinding('v8_util').takeHeapSnapshot();
diff --git a/spec/fixtures/api/app-path/package.json b/spec/fixtures/api/app-path/package.json
index 8f9e09dbdabb2..95c402d27efca 100644
--- a/spec/fixtures/api/app-path/package.json
+++ b/spec/fixtures/api/app-path/package.json
@@ -1,4 +1,4 @@
 {
-  "name": "app-path",
+  "name": "electron-test-app-path",
   "main": "lib/index.js"
 }
diff --git a/spec/fixtures/api/command-line/package.json b/spec/fixtures/api/command-line/package.json
index bbe8102015d01..897fa828efb0a 100644
--- a/spec/fixtures/api/command-line/package.json
+++ b/spec/fixtures/api/command-line/package.json
@@ -1,4 +1,4 @@
 {
-  "name": "command-line",
+  "name": "electron-test-command-line",
   "main": "main.js"
 }
diff --git a/spec/fixtures/api/default-menu/package.json b/spec/fixtures/api/default-menu/package.json
index 7e253de58f853..614b3ecf3ca60 100644
--- a/spec/fixtures/api/default-menu/package.json
+++ b/spec/fixtures/api/default-menu/package.json
@@ -1,4 +1,4 @@
 {
-  "name": "default-menu",
+  "name": "electron-test-default-menu",
   "main": "main.js"
 }
diff --git a/spec/fixtures/api/locale-check/main.js b/spec/fixtures/api/locale-check/main.js
index e287f8efa393a..929a9e0e9519a 100644
--- a/spec/fixtures/api/locale-check/main.js
+++ b/spec/fixtures/api/locale-check/main.js
@@ -1,7 +1,16 @@
 const { app } = require('electron');
 
+const locale = process.argv[2].substr(11);
+if (locale.length !== 0) {
+  app.commandLine.appendSwitch('lang', locale);
+}
+
 app.whenReady().then(() => {
-  process.stdout.write(app.getLocale());
+  if (process.argv[3] === '--print-env') {
+    process.stdout.write(String(process.env.LC_ALL));
+  } else {
+    process.stdout.write(app.getLocale());
+  }
   process.stdout.end();
 
   app.quit();
diff --git a/spec/fixtures/api/locale-check/package.json b/spec/fixtures/api/locale-check/package.json
index a24f536930d25..60e5f4d1cdc47 100644
--- a/spec/fixtures/api/locale-check/package.json
+++ b/spec/fixtures/api/locale-check/package.json
@@ -1,5 +1,5 @@
 {
-  "name": "locale-check",
+  "name": "electron-test-locale-check",
   "main": "main.js"
 }
 
diff --git a/spec/fixtures/api/site-instance-overrides/package.json b/spec/fixtures/api/site-instance-overrides/package.json
index 511d3a3c573e9..49fabbf14ca16 100644
--- a/spec/fixtures/api/site-instance-overrides/package.json
+++ b/spec/fixtures/api/site-instance-overrides/package.json
@@ -1,4 +1,4 @@
 {
-  "name": "site-instance-overrides",
+  "name": "electron-test-site-instance-overrides",
   "main": "main.js"
 }
diff --git a/spec/fixtures/api/window-all-closed/package.json b/spec/fixtures/api/window-all-closed/package.json
index 6486c5bc6e98a..bd54ca2fe4023 100644
--- a/spec/fixtures/api/window-all-closed/package.json
+++ b/spec/fixtures/api/window-all-closed/package.json
@@ -1,4 +1,4 @@
 {
-  "name": "window-all-closed",
+  "name": "electron-test-window-all-closed",
   "main": "main.js"
 }
diff --git a/spec/fixtures/pages/webview-trusted-types.html b/spec/fixtures/pages/webview-trusted-types.html
new file mode 100644
index 0000000000000..328a2a3f4d3a1
--- /dev/null
+++ b/spec/fixtures/pages/webview-trusted-types.html
@@ -0,0 +1,8 @@
+<html>
+<head>
+<meta http-equiv="Content-Security-Policy" content="require-trusted-types-for 'script'; trusted-types *">
+</head>
+<body>
+<webview preload="../module/isolated-ping.js" src="about:blank"/>
+</body>
+</html>
diff --git a/spec/fixtures/snapshot-items-available/package.json b/spec/fixtures/snapshot-items-available/package.json
index a0593c65d806b..1ff551bf6ea59 100644
--- a/spec/fixtures/snapshot-items-available/package.json
+++ b/spec/fixtures/snapshot-items-available/package.json
@@ -1,4 +1,4 @@
 {
-  "name": "snapshot-items-available",
+  "name": "electron-test-snapshot-items-available",
   "main": "main.js"
 }
diff --git a/spec/static/index.html b/spec/static/index.html
index f50197be966ee..9497bbcf8b20e 100644
--- a/spec/static/index.html
+++ b/spec/static/index.html
@@ -5,10 +5,18 @@
   // Deprecated APIs are still supported and should be tested.
   process.throwDeprecation = false
 
+  const Module = require('module');
   const path = require('path')
   const electron = require('electron')
   const { ipcRenderer } = electron
 
+  // Extra module paths which can be used to load Mocha reporters
+  if (process.env.ELECTRON_TEST_EXTRA_MODULE_PATHS) {
+    for (const modulePath of process.env.ELECTRON_TEST_EXTRA_MODULE_PATHS.split(':')) {
+      Module.globalPaths.push(modulePath);
+    }
+  }
+
   // Set up chai-as-promised here first to avoid conflicts
   // It must be loaded first or really strange things happen inside
   // chai that cause test failures
diff --git a/spec/webview-spec.js b/spec/webview-spec.js
index de39c60346cf7..360f55128a1f7 100644
--- a/spec/webview-spec.js
+++ b/spec/webview-spec.js
@@ -934,6 +934,12 @@ describe('<webview> tag', function () {
   });
 
   describe('media-started-playing media-paused events', () => {
+    beforeEach(function () {
+      if (!document.createElement('audio').canPlayType('audio/wav')) {
+        this.skip();
+      }
+    });
+
     it('emits when audio starts and stops playing', async () => {
       await loadWebView(webview, { src: `file://${fixtures}/pages/base-page.html` });
 
diff --git a/typings/internal-ambient.d.ts b/typings/internal-ambient.d.ts
index 6556c81d70cdd..b6c3990dd708f 100644
--- a/typings/internal-ambient.d.ts
+++ b/typings/internal-ambient.d.ts
@@ -21,6 +21,7 @@ declare namespace NodeJS {
     isPictureInPictureEnabled(): boolean;
     isExtensionsEnabled(): boolean;
     isComponentBuild(): boolean;
+    isWinDarkModeWindowUiEnabled(): boolean;
   }
 
   interface IpcRendererBinding {
@@ -39,7 +40,7 @@ declare namespace NodeJS {
     requestGarbageCollectionForTesting(): void;
     createIDWeakMap<V>(): ElectronInternal.KeyWeakMap<number, V>;
     createDoubleIDWeakMap<V>(): ElectronInternal.KeyWeakMap<[string, number], V>;
-    setRemoteCallbackFreer(fn: Function, frameId: number, contextId: String, id: number, sender: any): void
+    setRemoteCallbackFreer(fn: Function, processId: number, frameId: number, contextId: String, id: number, sender: any): void
     weaklyTrackValue(value: any): void;
     clearWeaklyTrackedValues(): void;
     getWeaklyTrackedValues(): any[];
@@ -161,6 +162,7 @@ declare interface Window {
     }
   };
   ResizeObserver: ResizeObserver;
+  trustedTypes: TrustedTypePolicyFactory;
 }
 
 /**
@@ -212,3 +214,41 @@ interface ResizeObserverEntry {
    */
   readonly contentRect: DOMRectReadOnly;
 }
+
+// https://w3c.github.io/webappsec-trusted-types/dist/spec/#trusted-types
+
+type TrustedHTML = string;
+type TrustedScript = string;
+type TrustedScriptURL = string;
+type TrustedType = TrustedHTML | TrustedScript | TrustedScriptURL;
+type StringContext = 'TrustedHTML' | 'TrustedScript' | 'TrustedScriptURL';
+
+// https://w3c.github.io/webappsec-trusted-types/dist/spec/#typedef-trustedtypepolicy
+
+interface TrustedTypePolicy {
+  createHTML(input: string, ...arguments: any[]): TrustedHTML;
+  createScript(input: string, ...arguments: any[]): TrustedScript;
+  createScriptURL(input: string, ...arguments: any[]): TrustedScriptURL;
+}
+
+// https://w3c.github.io/webappsec-trusted-types/dist/spec/#typedef-trustedtypepolicyoptions
+
+interface TrustedTypePolicyOptions {
+  createHTML?: (input: string, ...arguments: any[]) => TrustedHTML;
+  createScript?: (input: string, ...arguments: any[]) => TrustedScript;
+  createScriptURL?: (input: string, ...arguments: any[]) => TrustedScriptURL;
+}
+
+// https://w3c.github.io/webappsec-trusted-types/dist/spec/#typedef-trustedtypepolicyfactory
+
+interface TrustedTypePolicyFactory {
+  createPolicy(policyName: string, policyOptions: TrustedTypePolicyOptions): TrustedTypePolicy
+  isHTML(value: any): boolean;
+  isScript(value: any): boolean;
+  isScriptURL(value: any): boolean;
+  readonly emptyHTML: TrustedHTML;
+  readonly emptyScript: TrustedScript;
+  getAttributeType(tagName: string, attribute: string, elementNs?: string, attrNs?: string): StringContext | null;
+  getPropertyType(tagName: string, property: string, elementNs?: string): StringContext | null;
+  readonly defaultPolicy: TrustedTypePolicy | null;
+}
diff --git a/typings/internal-electron.d.ts b/typings/internal-electron.d.ts
index f485a4348ba21..41172a10d46f5 100644
--- a/typings/internal-electron.d.ts
+++ b/typings/internal-electron.d.ts
@@ -32,6 +32,12 @@ declare namespace Electron {
   interface WebContents {
     _getURL(): string;
     getOwnerBrowserWindow(): Electron.BrowserWindow;
+    _initiallyShown: boolean;
+  }
+
+  interface WebPreferences {
+    guestInstanceId?: number;
+    openerId?: number;
   }
 
   interface SerializedError {
@@ -75,6 +81,8 @@ declare namespace Electron {
   interface IpcRendererInternal extends Electron.IpcRenderer {
     invoke<T>(channel: string, ...args: any[]): Promise<T>;
     sendToAll(webContentsId: number, channel: string, ...args: any[]): void
+    onMessageFromMain(channel: string, listener: (event: Electron.IpcRendererEvent, ...args: any[]) => void): this;
+    onceMessageFromMain(channel: string, listener: (event: Electron.IpcRendererEvent, ...args: any[]) => void): this;
   }
 
   interface WebContentsInternal extends Electron.WebContents {
@@ -158,16 +166,6 @@ declare namespace ElectronInternal {
     allowGuestViewElementDefinition(window: Window, context: any): void;
   }
 
-  interface WebFrameResizeEvent extends Electron.Event {
-    newWidth: number;
-    newHeight: number;
-  }
-
-  interface WebViewEvent extends Event {
-    url: string;
-    isMainFrame: boolean;
-  }
-
   class WebViewElement extends HTMLElement {
     static observedAttributes: Array<string>;
 
diff --git a/vsts-arm32v7.yml b/vsts-arm32v7.yml
index 376a07eac4870..a6667d89e3b45 100644
--- a/vsts-arm32v7.yml
+++ b/vsts-arm32v7.yml
@@ -1,7 +1,7 @@
 resources:
   containers:
   - container: arm32v7-test-container
-    image: electronjs/build:arm32v7-697b894f36d127155e020f4e8ad4b2e5f6a09613
+    image: electron.azurecr.io/build:arm32v7-4cec2c5ab66765caa724e37bae2bffb9b29722a5
     options: --shm-size 128m
 
 jobs:
diff --git a/vsts-arm64v8.yml b/vsts-arm64v8.yml
index 767391fbb6099..375bf15601389 100644
--- a/vsts-arm64v8.yml
+++ b/vsts-arm64v8.yml
@@ -1,7 +1,7 @@
 resources:
   containers:
   - container: arm64v8-test-container
-    image: electronjs/build:arm64v8-697b894f36d127155e020f4e8ad4b2e5f6a09613
+    image: electron.azurecr.io/build:arm64v8-4cec2c5ab66765caa724e37bae2bffb9b29722a5
     options: --shm-size 128m
 
 jobs:
diff --git a/yarn.lock b/yarn.lock
index 86d124d5a49c8..e082000c1de6c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -25,10 +25,10 @@
   dependencies:
     regenerator-runtime "^0.13.2"
 
-"@electron/docs-parser@^0.7.2":
-  version "0.7.2"
-  resolved "https://registry.yarnpkg.com/@electron/docs-parser/-/docs-parser-0.7.2.tgz#f0d5b9f314db519ac1f83359c07c6ec42d3123d1"
-  integrity sha512-b8D+v9I3OGSL/5AlPYry11UtygskWe1ejwXxBePNst45/AclYoIIQnIlXr51tv8Q+Wsuhqh/fJWHO9yAjF30Uw==
+"@electron/docs-parser@^0.10.0":
+  version "0.10.0"
+  resolved "https://registry.yarnpkg.com/@electron/docs-parser/-/docs-parser-0.10.0.tgz#cc399f3847c37a38af8c13c711dc57eb07e21994"
+  integrity sha512-dNUNsW3tC5VWyWDD6awxDsA0Wc91PVaG4KmSBnqQmXE7bNjnEFE1hf5TaH0KOmJq1KMyQ2rbp7rrrvqRoLKP1Q==
   dependencies:
     "@types/markdown-it" "^0.0.9"
     chai "^4.2.0"
@@ -71,6 +71,20 @@
   resolved "https://registry.yarnpkg.com/@nodelib/fs.stat/-/fs.stat-1.1.3.tgz#2b5a3ab3f918cca48a8c754c08168e3f03eba61b"
   integrity sha512-shAmDyaQC4H92APFoIaVDHCx5bStIocgvbwQyxPRrbUY20V1EYTbSDchWbuwlMG3V17cprZhA6+78JfB+3DTPw==
 
+"@octokit/auth-app@^2.10.0":
+  version "2.10.0"
+  resolved "https://registry.yarnpkg.com/@octokit/auth-app/-/auth-app-2.10.0.tgz#ad79369fca1cc3035859f797310d5e81cc6e49c4"
+  integrity sha512-mKFU7O5wI651iWgecs4fmJ2aLqOM3sWD1FJsUTm7nx21I4ePDhS+rGQmS5TZk5yz75Va6wEXesxUNFzuqCbP2A==
+  dependencies:
+    "@octokit/request" "^5.3.0"
+    "@octokit/request-error" "^2.0.0"
+    "@octokit/types" "^5.0.0"
+    "@types/lru-cache" "^5.1.0"
+    deprecation "^2.3.1"
+    lru-cache "^6.0.0"
+    universal-github-app-jwt "^1.0.1"
+    universal-user-agent "^6.0.0"
+
 "@octokit/endpoint@^5.1.0":
   version "5.2.1"
   resolved "https://registry.yarnpkg.com/@octokit/endpoint/-/endpoint-5.2.1.tgz#e5ef98bc4a41fad62b17e71af1a1710f6076b8df"
@@ -81,6 +95,15 @@
     universal-user-agent "^2.1.0"
     url-template "^2.0.8"
 
+"@octokit/endpoint@^6.0.1":
+  version "6.0.5"
+  resolved "https://registry.yarnpkg.com/@octokit/endpoint/-/endpoint-6.0.5.tgz#43a6adee813c5ffd2f719e20cfd14a1fee7c193a"
+  integrity sha512-70K5u6zd45ItOny6aHQAsea8HHQjlQq85yqOMe+Aj8dkhN2qSJ9T+Q3YjUjEYfPRBcuUWNgMn62DQnP/4LAIiQ==
+  dependencies:
+    "@octokit/types" "^5.0.0"
+    is-plain-object "^4.0.0"
+    universal-user-agent "^6.0.0"
+
 "@octokit/request-error@^1.0.1", "@octokit/request-error@^1.0.2":
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/@octokit/request-error/-/request-error-1.0.4.tgz#15e1dc22123ba4a9a4391914d80ec1e5303a23be"
@@ -89,6 +112,15 @@
     deprecation "^2.0.0"
     once "^1.4.0"
 
+"@octokit/request-error@^2.0.0":
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/@octokit/request-error/-/request-error-2.0.3.tgz#b51b200052bf483f6fa56c9e7e3aa51ead36ecd8"
+  integrity sha512-GgD5z8Btm301i2zfvJLk/mkhvGCdjQ7wT8xF9ov5noQY8WbKZDH9cOBqXzoeKd1mLr1xH2FwbtGso135zGBgTA==
+  dependencies:
+    "@octokit/types" "^5.0.1"
+    deprecation "^2.0.0"
+    once "^1.4.0"
+
 "@octokit/request@^4.0.1":
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/@octokit/request/-/request-4.1.1.tgz#614262214f48417b4d3b14e047d09a9c8e2f7a09"
@@ -102,6 +134,20 @@
     once "^1.4.0"
     universal-user-agent "^2.1.0"
 
+"@octokit/request@^5.3.0":
+  version "5.4.10"
+  resolved "https://registry.yarnpkg.com/@octokit/request/-/request-5.4.10.tgz#402d2c53768bde12b99348329ba4129746aebb9c"
+  integrity sha512-egA49HkqEORVGDZGav1mh+VD+7uLgOxtn5oODj6guJk0HCy+YBSYapFkSLFgeYj3Fr18ZULKGURkjyhkAChylw==
+  dependencies:
+    "@octokit/endpoint" "^6.0.1"
+    "@octokit/request-error" "^2.0.0"
+    "@octokit/types" "^5.0.0"
+    deprecation "^2.0.0"
+    is-plain-object "^5.0.0"
+    node-fetch "^2.6.1"
+    once "^1.4.0"
+    universal-user-agent "^6.0.0"
+
 "@octokit/rest@^16.3.2":
   version "16.28.2"
   resolved "https://registry.yarnpkg.com/@octokit/rest/-/rest-16.28.2.tgz#3fc3b8700046ab29ab1e2a4bdf49f89e94f7ba27"
@@ -121,6 +167,13 @@
     universal-user-agent "^2.0.0"
     url-template "^2.0.8"
 
+"@octokit/types@^5.0.0", "@octokit/types@^5.0.1":
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/@octokit/types/-/types-5.5.0.tgz#e5f06e8db21246ca102aa28444cdb13ae17a139b"
+  integrity sha512-UZ1pErDue6bZNjYOotCNveTXArOMZQFG6hKJfOnGnulVCMcVVi7YIIuuR4WfBhjo7zgpmzn/BkPDnUXtNx+PcQ==
+  dependencies:
+    "@types/node" ">= 8"
+
 "@primer/octicons@^9.1.1":
   version "9.1.1"
   resolved "https://registry.yarnpkg.com/@primer/octicons/-/octicons-9.1.1.tgz#a72a59e8ec77521cc2eefb36c345f780a61c79fb"
@@ -259,11 +312,23 @@
   resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.4.tgz#38fd73ddfd9b55abb1e1b2ed578cb55bd7b7d339"
   integrity sha512-8+KAKzEvSUdeo+kmqnKrqgeE+LcA0tjYWFY7RPProVYwnqDjukzO+3b6dLD56rYX5TdWejnEOLJYOIeh4CXKuA==
 
+"@types/jsonwebtoken@^8.3.3":
+  version "8.5.0"
+  resolved "https://registry.yarnpkg.com/@types/jsonwebtoken/-/jsonwebtoken-8.5.0.tgz#2531d5e300803aa63279b232c014acf780c981c5"
+  integrity sha512-9bVao7LvyorRGZCw0VmH/dr7Og+NdjYSsKAxB43OQoComFbBgsEpoR9JW6+qSq/ogwVBg8GI2MfAlk4SYI4OLg==
+  dependencies:
+    "@types/node" "*"
+
 "@types/linkify-it@*":
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/@types/linkify-it/-/linkify-it-2.1.0.tgz#ea3dd64c4805597311790b61e872cbd1ed2cd806"
   integrity sha512-Q7DYAOi9O/+cLLhdaSvKdaumWyHbm7HAk/bFwwyTuU0arR5yyCeW5GOoqt4tJTpDRxhpx9Q8kQL6vMpuw9hDSw==
 
+"@types/lru-cache@^5.1.0":
+  version "5.1.0"
+  resolved "https://registry.yarnpkg.com/@types/lru-cache/-/lru-cache-5.1.0.tgz#57f228f2b80c046b4a1bd5cac031f81f207f4f03"
+  integrity sha512-RaE0B+14ToE4l6UqdarKPnXwVDuigfFv+5j9Dze/Nqr23yyuqdNvzcZi3xB+3Agvi5R4EOgAksfv3lXX4vBt9w==
+
 "@types/markdown-it@^0.0.9":
   version "0.0.9"
   resolved "https://registry.yarnpkg.com/@types/markdown-it/-/markdown-it-0.0.9.tgz#a5d552f95216c478e0a27a5acc1b28dcffd989ce"
@@ -291,6 +356,11 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-12.6.1.tgz#d5544f6de0aae03eefbb63d5120f6c8be0691946"
   integrity sha512-rp7La3m845mSESCgsJePNL/JQyhkOJA6G4vcwvVgkDAwHhGdq5GCumxmPjEk1MZf+8p5ZQAUE7tqgQRQTXN7uQ==
 
+"@types/node@>= 8":
+  version "14.14.7"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-14.14.7.tgz#8ea1e8f8eae2430cf440564b98c6dfce1ec5945d"
+  integrity sha512-Zw1vhUSQZYw+7u5dAwNbIA9TuTotpzY/OF7sJM9FqPOF3SPjKnxrjoTktXDZgUjybf4cWVBP7O8wvKdSaGHweg==
+
 "@types/node@^11.13.7":
   version "11.13.22"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-11.13.22.tgz#91ee88ebfa25072433497f6f3150f84fa8c3a91b"
@@ -1152,6 +1222,11 @@ buffer-alloc@^1.2.0:
     buffer-alloc-unsafe "^1.1.0"
     buffer-fill "^1.0.0"
 
+buffer-equal-constant-time@1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/buffer-equal-constant-time/-/buffer-equal-constant-time-1.0.1.tgz#f8e71132f7ffe6e01a5c9697a4c6f3e48d5cc819"
+  integrity sha1-+OcRMvf/5uAaXJaXpMbz5I1cyBk=
+
 buffer-fill@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/buffer-fill/-/buffer-fill-1.0.0.tgz#f8f78b76789888ef39f205cd637f68e702122b2c"
@@ -1939,7 +2014,7 @@ depd@~1.1.2:
   resolved "https://registry.yarnpkg.com/depd/-/depd-1.1.2.tgz#9bcd52e14c097763e749b274c4346ed2e560b5a9"
   integrity sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak=
 
-deprecation@^2.0.0:
+deprecation@^2.0.0, deprecation@^2.3.1:
   version "2.3.1"
   resolved "https://registry.yarnpkg.com/deprecation/-/deprecation-2.3.1.tgz#6368cbdb40abf3373b525ac87e4a260c3a700919"
   integrity sha512-xmHIy4F3scKVwMsQ4WnVaS8bHOx0DmVwRywosKhaILI0ywMDWPtBSku2HNxRvF7jtwDRsoEwYQSfbxj8b7RlJQ==
@@ -2068,6 +2143,13 @@ ecc-jsbn@~0.1.1:
     jsbn "~0.1.0"
     safer-buffer "^2.1.0"
 
+ecdsa-sig-formatter@1.0.11:
+  version "1.0.11"
+  resolved "https://registry.yarnpkg.com/ecdsa-sig-formatter/-/ecdsa-sig-formatter-1.0.11.tgz#ae0f0fa2d85045ef14a817daa3ce9acd0489e5bf"
+  integrity sha512-nagl3RYrbNv6kQkeJIpt6NJZy8twLB/2vtz6yN9Z4vRKHN4/QZJIEbqohALSgwKdnksuY3k5Addp5lg8sVoVcQ==
+  dependencies:
+    safe-buffer "^5.0.1"
+
 ee-first@1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"
@@ -3898,6 +3980,16 @@ is-plain-object@^3.0.0:
   dependencies:
     isobject "^4.0.0"
 
+is-plain-object@^4.0.0:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/is-plain-object/-/is-plain-object-4.1.1.tgz#1a14d6452cbd50790edc7fdaa0aed5a40a35ebb5"
+  integrity sha512-5Aw8LLVsDlZsETVMhoMXzqsXwQqr/0vlnBYzIXJbYo2F4yYlhLHs+Ez7Bod7IIQKWkJbJfxrWD7pA1Dw1TKrwA==
+
+is-plain-object@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/is-plain-object/-/is-plain-object-5.0.0.tgz#4427f50ab3429e9025ea7d52e9043a9ef4159344"
+  integrity sha512-VRSzKkbMm5jMDoKLbltAkFQ5Qr7VDiTFGXxYFXXowVj387GeGNOCsOH6Msy00SGZ3Fp84b1Naa1psqgcCIEP5Q==
+
 is-posix-bracket@^0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/is-posix-bracket/-/is-posix-bracket-0.1.1.tgz#3334dc79774368e92f016e6fbc0a88f5cd6e6bc4"
@@ -4088,6 +4180,22 @@ jsonfile@^4.0.0:
   optionalDependencies:
     graceful-fs "^4.1.6"
 
+jsonwebtoken@^8.5.1:
+  version "8.5.1"
+  resolved "https://registry.yarnpkg.com/jsonwebtoken/-/jsonwebtoken-8.5.1.tgz#00e71e0b8df54c2121a1f26137df2280673bcc0d"
+  integrity sha512-XjwVfRS6jTMsqYs0EsuJ4LGxXV14zQybNd4L2r0UvbVnSF9Af8x7p5MzbJ90Ioz/9TI41/hTCvznF/loiSzn8w==
+  dependencies:
+    jws "^3.2.2"
+    lodash.includes "^4.3.0"
+    lodash.isboolean "^3.0.3"
+    lodash.isinteger "^4.0.4"
+    lodash.isnumber "^3.0.3"
+    lodash.isplainobject "^4.0.6"
+    lodash.isstring "^4.0.1"
+    lodash.once "^4.0.0"
+    ms "^2.1.1"
+    semver "^5.6.0"
+
 jsprim@^1.2.2:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/jsprim/-/jsprim-1.4.1.tgz#313e66bc1e5cc06e438bc1b7499c2e5c56acb6a2"
@@ -4106,6 +4214,23 @@ jsx-ast-utils@^2.0.1:
     array-includes "^3.0.3"
     object.assign "^4.1.0"
 
+jwa@^1.4.1:
+  version "1.4.1"
+  resolved "https://registry.yarnpkg.com/jwa/-/jwa-1.4.1.tgz#743c32985cb9e98655530d53641b66c8645b039a"
+  integrity sha512-qiLX/xhEEFKUAJ6FiBMbes3w9ATzyk5W7Hvzpa/SLYdxNtng+gcurvrI7TbACjIXlsJyr05/S1oUhZrc63evQA==
+  dependencies:
+    buffer-equal-constant-time "1.0.1"
+    ecdsa-sig-formatter "1.0.11"
+    safe-buffer "^5.0.1"
+
+jws@^3.2.2:
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/jws/-/jws-3.2.2.tgz#001099f3639468c9414000e99995fa52fb478304"
+  integrity sha512-YHlZCB6lMTllWDtSPHz/ZXTsi8S00usEV6v1tjq8tOUZzw7DpSDWVXjXDre6ed1w/pd495ODpHZYSdkRTsa0HA==
+  dependencies:
+    jwa "^1.4.1"
+    safe-buffer "^5.0.1"
+
 kind-of@^3.0.2, kind-of@^3.0.3, kind-of@^3.2.0:
   version "3.2.2"
   resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-3.2.2.tgz#31ea21a734bab9bbb0f32466d893aea51e4a3c64"
@@ -4338,6 +4463,41 @@ lodash.get@^4.4.2:
   resolved "https://registry.yarnpkg.com/lodash.get/-/lodash.get-4.4.2.tgz#2d177f652fa31e939b4438d5341499dfa3825e99"
   integrity sha1-LRd/ZS+jHpObRDjVNBSZ36OCXpk=
 
+lodash.includes@^4.3.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/lodash.includes/-/lodash.includes-4.3.0.tgz#60bb98a87cb923c68ca1e51325483314849f553f"
+  integrity sha1-YLuYqHy5I8aMoeUTJUgzFISfVT8=
+
+lodash.isboolean@^3.0.3:
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/lodash.isboolean/-/lodash.isboolean-3.0.3.tgz#6c2e171db2a257cd96802fd43b01b20d5f5870f6"
+  integrity sha1-bC4XHbKiV82WgC/UOwGyDV9YcPY=
+
+lodash.isinteger@^4.0.4:
+  version "4.0.4"
+  resolved "https://registry.yarnpkg.com/lodash.isinteger/-/lodash.isinteger-4.0.4.tgz#619c0af3d03f8b04c31f5882840b77b11cd68343"
+  integrity sha1-YZwK89A/iwTDH1iChAt3sRzWg0M=
+
+lodash.isnumber@^3.0.3:
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/lodash.isnumber/-/lodash.isnumber-3.0.3.tgz#3ce76810c5928d03352301ac287317f11c0b1ffc"
+  integrity sha1-POdoEMWSjQM1IwGsKHMX8RwLH/w=
+
+lodash.isplainobject@^4.0.6:
+  version "4.0.6"
+  resolved "https://registry.yarnpkg.com/lodash.isplainobject/-/lodash.isplainobject-4.0.6.tgz#7c526a52d89b45c45cc690b88163be0497f550cb"
+  integrity sha1-fFJqUtibRcRcxpC4gWO+BJf1UMs=
+
+lodash.isstring@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/lodash.isstring/-/lodash.isstring-4.0.1.tgz#d527dfb5456eca7cc9bb95d5daeaf88ba54a5451"
+  integrity sha1-1SfftUVuynzJu5XV2ur4i6VKVFE=
+
+lodash.once@^4.0.0:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/lodash.once/-/lodash.once-4.1.1.tgz#0dd3971213c7c56df880977d504c88fb471a97ac"
+  integrity sha1-DdOXEhPHxW34gJd9UEyI+0cal6w=
+
 lodash.range@^3.2.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/lodash.range/-/lodash.range-3.2.0.tgz#f461e588f66683f7eadeade513e38a69a565a15d"
@@ -4425,6 +4585,13 @@ lru-cache@^5.1.1:
   dependencies:
     yallist "^3.0.2"
 
+lru-cache@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-6.0.0.tgz#6d6fe6570ebd96aaf90fcad1dafa3b2566db3a94"
+  integrity sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==
+  dependencies:
+    yallist "^4.0.0"
+
 macos-release@^2.2.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/macos-release/-/macos-release-2.3.0.tgz#eb1930b036c0800adebccd5f17bc4c12de8bb71f"
@@ -4865,6 +5032,11 @@ node-fetch@^2.3.0:
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.0.tgz#e633456386d4aa55863f676a7ab0daa8fdecb0fd"
   integrity sha512-8dG4H5ujfvFiqDmVu9fQ5bOHUC15JMjMY/Zumv26oOvvVJjM67KF8koCWIabKQ1GJIa9r2mMZscBq/TbdOcmNA==
 
+node-fetch@^2.6.1:
+  version "2.6.1"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.1.tgz#045bd323631f76ed2e2b55573394416b639a0052"
+  integrity sha512-V4aYg89jEoVRxRb2fJdAg8FHvI7cEyYdVAh94HH0UIK8oJxUfkjlDQN9RbMx+bEjP7+ggMiFRprSti032Oipxw==
+
 node-libs-browser@^2.2.1:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/node-libs-browser/-/node-libs-browser-2.2.1.tgz#b64f513d18338625f90346d27b0d235e631f6425"
@@ -7877,6 +8049,14 @@ unist-util-visit@^1.0.0, unist-util-visit@^1.1.0, unist-util-visit@^1.1.1, unist
   dependencies:
     unist-util-visit-parents "^2.0.0"
 
+universal-github-app-jwt@^1.0.1:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/universal-github-app-jwt/-/universal-github-app-jwt-1.1.0.tgz#0abaa876101cdf1d3e4c546be2768841c0c1b514"
+  integrity sha512-3b+ocAjjz4JTyqaOT+NNBd5BtTuvJTxWElIoeHSVelUV9J3Jp7avmQTdLKCaoqi/5Ox2o/q+VK19TJ233rVXVQ==
+  dependencies:
+    "@types/jsonwebtoken" "^8.3.3"
+    jsonwebtoken "^8.5.1"
+
 universal-user-agent@^2.0.0, universal-user-agent@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/universal-user-agent/-/universal-user-agent-2.1.0.tgz#5abfbcc036a1ba490cb941f8fd68c46d3669e8e4"
@@ -7884,6 +8064,11 @@ universal-user-agent@^2.0.0, universal-user-agent@^2.1.0:
   dependencies:
     os-name "^3.0.0"
 
+universal-user-agent@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/universal-user-agent/-/universal-user-agent-6.0.0.tgz#3381f8503b251c0d9cd21bc1de939ec9df5480ee"
+  integrity sha512-isyNax3wXoKaulPDZWHQqbmIx1k2tb9fb3GGDBRxCscfYV2Ch7WxPArBsFEG8s/safwXTT7H4QGhaIkTp9447w==
+
 universalify@^0.1.0:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/universalify/-/universalify-0.1.2.tgz#b646f69be3942dabcecc9d6639c80dc105efaa66"
@@ -8259,6 +8444,11 @@ yallist@^3.0.0, yallist@^3.0.2, yallist@^3.0.3:
   resolved "https://registry.yarnpkg.com/yallist/-/yallist-3.0.3.tgz#b4b049e314be545e3ce802236d6cd22cd91c3de9"
   integrity sha512-S+Zk8DEWE6oKpV+vI3qWkaK+jSbIK86pCwe2IF/xwIpQ8jEuxpw9NyaGjmp9+BoJv5FV2piqCDcoCtStppiq2A==
 
+yallist@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/yallist/-/yallist-4.0.0.tgz#9bb92790d9c0effec63be73519e11a35019a3a72"
+  integrity sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==
+
 yargs-parser@^13.1.0:
   version "13.1.1"
   resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-13.1.1.tgz#d26058532aa06d365fe091f6a1fc06b2f7e5eca0"