Bump v12.0.0-beta.22

build: fix buildflags.h generation on macos (#27595 )
Co-authored-by: John Kleinschmidt <jkleinsc@electronjs.org>
2026-02-19 03:14:51 -05:00 · 2021-02-04 07:01:18 -08:00 · 2021-02-03 16:30:04 +09:00 · 2021-02-03 16:28:47 +09:00 · 2021-02-02 09:39:17 -08:00 · 2021-02-01 16:42:43 -05:00
1001 changed files with 27358 additions and 14604 deletions
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -69,7 +69,7 @@ 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
@@ -85,17 +85,17 @@ machine-linux-2xlarge: &machine-linux-2xlarge

 machine-mac: &machine-mac
  macos:
-    xcode: "11.5.0"
+    xcode: "12.2.0"

 machine-mac-large: &machine-mac-large
  resource_class: large
  macos:
-    xcode: "11.5.0"
+    xcode: "12.2.0"

 machine-mac-large-arm: &machine-mac-large-arm
  resource_class: large
  macos:
-    xcode: "12.0.0-large"
+    xcode: "12.2.0"

 # Build configurations options.
 env-testing-build: &env-testing-build
@@ -107,6 +107,7 @@ 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'
@@ -157,10 +158,6 @@ env-mas-apple-silicon: &env-mas-apple-silicon
  TARGET_ARCH: arm64
  USE_PREBUILT_V8_CONTEXT_SNAPSHOT: 1

-# Misc build configuration options.
-env-enable-sccache: &env-enable-sccache
-  USE_SCCACHE: true
-
 env-send-slack-notifications: &env-send-slack-notifications
  NOTIFY_SLACK: true
  
@@ -256,23 +253,34 @@ 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="Electron Bot" GIT_COMMITTER_EMAIL="electron@github.com" git commit -m "update patches" --author="Electron Bot <electron@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

@@ -283,26 +291,14 @@ 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
@@ -311,7 +307,7 @@ 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').downloadAndPrepare({ gomaOneForAll: true })"
      node -e "require('./src/utils/goma.js').ensure()"
      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
@@ -320,15 +316,17 @@ step-setup-goma-for-build: &step-setup-goma-for-build
 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
@@ -449,9 +447,6 @@ step-fix-sync-on-mac: &step-fix-sync-on-mac
        # Fix Clang Install (wrong binary)
        rm -rf src/third_party/llvm-build
        python src/tools/clang/scripts/update.py
-        # Fix Framework Header Installs (symlinks not retained)
-        rm -rf src/electron/external_binaries
-        python src/electron/script/update-external-binaries.py
      fi

 step-install-signing-cert-on-mac: &step-install-signing-cert-on-mac
@@ -468,8 +463,10 @@ 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

@@ -478,11 +475,7 @@ 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:
@@ -491,7 +484,6 @@ step-gn-check: &step-gn-check
      cd src
      gn check out/Default //electron:electron_lib
      gn check out/Default //electron:electron_app
-      gn check out/Default //electron:manifests
      gn check out/Default //electron/shell/common/api:mojo
      # Check the hunspell filenames
      node electron/script/gen-hunspell-filenames.js --check
@@ -522,12 +514,8 @@ step-electron-build: &step-electron-build
        gn desc out/Default v8:run_mksnapshot_default args > out/Default/mksnapshot_args
        rm -rf out/Default/clang_x64_v8_arm64/obj

-        # Regenerate because we just deleted some ninja files
-        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 $GN_BUILDFLAG_ARGS"
-        fi
+        # Regenerate because we just deleted some ninja files 
+        gn gen out/Default --args="import(\"$GN_CONFIG\") import(\"$GN_GOMA_FILE\") $GN_EXTRA_ARGS $GN_BUILDFLAG_ARGS"
      fi
      ninja -C out/Default electron -j $NUMBER_OF_NINJA_PROCESSES
      node electron/script/check-symlinks.js
@@ -572,6 +560,9 @@ step-electron-dist-build: &step-electron-dist-build
            if [ x"$MAS_BUILD" == x"true" ]; then
              target_os=mac_mas
            fi
+            if [ "$TARGET_ARCH" == "arm64" ]; then
+              target_cpu=arm64
+            fi
          elif [ "`uname`" == "Linux" ]; then
            target_os=linux
            if [ x"$TARGET_ARCH" == x ]; then
@@ -600,11 +591,7 @@ 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
@@ -659,10 +646,10 @@ 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
@@ -715,11 +702,7 @@ 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:
@@ -762,16 +745,17 @@ 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
-    command: |
-      if [ "$SCCACHE_PATH" != "" ]; then
-        $SCCACHE_PATH -s
-      fi
-      if [ "$USE_GOMA" == "true" ]; then
-        $LOCAL_GOMA_DIR/goma_ctl.py stat
-      fi
+    shell: /bin/bash
+    name: Check goma stats after build
+    command: |      
+      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:
@@ -909,6 +893,8 @@ 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
@@ -1177,6 +1163,7 @@ 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

@@ -1210,7 +1197,7 @@ 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-restore-brew-cache
+    - *step-setup-goma-for-build
    - *step-get-more-space-on-mac
    - *step-install-npm-deps-on-mac
    - *step-fix-sync-on-mac
@@ -1219,26 +1206,13 @@ 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:
@@ -1246,7 +1220,7 @@ 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:
@@ -1494,7 +1468,6 @@ commands:
                  - run:
                      name: Preserve vendor dirs for release
                      command: |
-                        mv src/electron/vendor/boto .
                        mv src/electron/vendor/requests .
            - run:
                name: Wipe Electron
@@ -1507,9 +1480,7 @@ commands:
                  - run:
                      name: Preserve vendor dirs for release
                      command: |
-                        rm -rf src/electron/vendor/boto
                        rm -rf src/electron/vendor/requests
-                        mv boto src/electron/vendor
                        mv requests src/electron/vendor/requests
            - *step-generate-deps-hash-cleanly
            - *step-mark-sync-done
@@ -1554,7 +1525,7 @@ commands:
            - *step-nodejs-headers-build
            - *step-nodejs-headers-store

-            - *step-show-sccache-stats
+            - *step-show-goma-stats

            # mksnapshot
            - *step-mksnapshot-build
@@ -1642,13 +1613,14 @@ 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
@@ -1705,7 +1677,7 @@ jobs:
    <<: *machine-linux-2xlarge
    environment:
      <<: *env-linux-2xlarge
-      GCLIENT_EXTRA_ARGS: '--custom-var=checkout_arm=True --custom-var=checkout_arm64=True --custom-var=checkout_boto=True --custom-var=checkout_requests=True'
+      GCLIENT_EXTRA_ARGS: '--custom-var=checkout_arm=True --custom-var=checkout_arm64=True --custom-var=checkout_requests=True'
    steps:
      - electron-build:
          persist: false
@@ -1764,7 +1736,7 @@ jobs:
      <<: *env-linux-2xlarge
      <<: *env-testing-build
      <<: *env-macos-build
-      GCLIENT_EXTRA_ARGS: '--custom-var=checkout_mac=True --custom-var=host_os=mac --custom-var=checkout_boto=True --custom-var=checkout_requests=True'
+      GCLIENT_EXTRA_ARGS: '--custom-var=checkout_mac=True --custom-var=host_os=mac --custom-var=checkout_requests=True'
    steps:
      - electron-build:
          persist: false
@@ -1799,7 +1771,7 @@ jobs:

  # Layer 2: Builds.
  linux-x64-testing:
-    <<: *machine-linux-xlarge
+    <<: *machine-linux-2xlarge
    environment:
      <<: *env-global
      <<: *env-testing-build
@@ -1832,14 +1804,6 @@ 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:
@@ -1857,10 +1821,10 @@ jobs:
    <<: *machine-linux-2xlarge
    environment:
      <<: *env-linux-2xlarge-release
-      GCLIENT_EXTRA_ARGS: '--custom-var=checkout_boto=True --custom-var=checkout_requests=True'
+      GCLIENT_EXTRA_ARGS: '--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
@@ -1871,15 +1835,15 @@ 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
          checkout: false

  linux-ia32-testing:
-    <<: *machine-linux-xlarge
+    <<: *machine-linux-2xlarge
    environment:
      <<: *env-global
      <<: *env-ia32
@@ -1892,15 +1856,6 @@ 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:
@@ -1919,12 +1874,12 @@ jobs:
    <<: *machine-linux-2xlarge
    environment:
      <<: *env-linux-2xlarge-release
-      GCLIENT_EXTRA_ARGS: '--custom-var=checkout_boto=True --custom-var=checkout_requests=True'
+      GCLIENT_EXTRA_ARGS: '--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
@@ -1936,16 +1891,16 @@ 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
          checkout: false

  linux-arm-testing:
-    <<: *machine-linux-xlarge
+    <<: *machine-linux-2xlarge
    environment:
      <<: *env-global
      <<: *env-arm
@@ -1959,15 +1914,6 @@ 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:
@@ -1988,10 +1934,10 @@ 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'
+      GCLIENT_EXTRA_ARGS: '--custom-var=checkout_arm=True --custom-var=checkout_requests=True'
      UPLOAD_TO_S3: << pipeline.parameters.upload-to-s3 >>
+      <<: *env-ninja-status
    steps:
      - electron-publish:
          attach: false
@@ -2003,16 +1949,16 @@ 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
          checkout: false

  linux-arm64-testing:
-    <<: *machine-linux-xlarge
+    <<: *machine-linux-2xlarge
    environment:
      <<: *env-global
      <<: *env-arm64
@@ -2034,15 +1980,6 @@ 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:
@@ -2063,9 +2000,9 @@ 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'
+      GCLIENT_EXTRA_ARGS: '--custom-var=checkout_arm64=True --custom-var=checkout_requests=True'
      UPLOAD_TO_S3: << pipeline.parameters.upload-to-s3 >>
+      <<: *env-ninja-status
    steps:
      - electron-publish:
          attach: false
@@ -2077,8 +2014,8 @@ 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
@@ -2125,9 +2062,9 @@ 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'
+      GCLIENT_EXTRA_ARGS: '--custom-var=checkout_requests=True'
      UPLOAD_TO_S3: << pipeline.parameters.upload-to-s3 >>
+      <<: *env-ninja-status
    steps:
      - electron-publish:
          attach: false
@@ -2138,10 +2075,10 @@ jobs:
    environment:
      <<: *env-mac-large-release
      <<: *env-release-build
-      <<: *env-enable-sccache
      <<: *env-apple-silicon
-      GCLIENT_EXTRA_ARGS: '--custom-var=checkout_boto=True --custom-var=checkout_requests=True'
+      GCLIENT_EXTRA_ARGS: '--custom-var=checkout_requests=True'
      UPLOAD_TO_S3: << pipeline.parameters.upload-to-s3 >>
+      <<: *env-ninja-status
    steps:
      - electron-publish:
          attach: false
@@ -2152,8 +2089,8 @@ 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
@@ -2164,9 +2101,9 @@ jobs:
    environment:
      <<: *env-mac-large-release
      <<: *env-release-build
-      <<: *env-enable-sccache
      <<: *env-apple-silicon
      UPLOAD_TO_S3: << pipeline.parameters.upload-to-s3 >>
+      <<: *env-ninja-status
    steps:
      - electron-publish:
          attach: true
@@ -2233,9 +2170,9 @@ 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'
+      GCLIENT_EXTRA_ARGS: '--custom-var=checkout_requests=True'
      UPLOAD_TO_S3: << pipeline.parameters.upload-to-s3 >>
+      <<: *env-ninja-status
    steps:
      - electron-publish:
          attach: false
@@ -2247,9 +2184,9 @@ jobs:
      <<: *env-mac-large-release
      <<: *env-mas-apple-silicon
      <<: *env-release-build
-      <<: *env-enable-sccache
-      GCLIENT_EXTRA_ARGS: '--custom-var=checkout_boto=True --custom-var=checkout_requests=True'
+      GCLIENT_EXTRA_ARGS: '--custom-var=checkout_requests=True'
      UPLOAD_TO_S3: << pipeline.parameters.upload-to-s3 >>
+      <<: *env-ninja-status
    steps:
      - electron-publish:
          attach: false
@@ -2261,7 +2198,6 @@ jobs:
      <<: *env-mac-large-release
      <<: *env-mas
      <<: *env-release-build
-      <<: *env-enable-sccache
      UPLOAD_TO_S3: << pipeline.parameters.upload-to-s3 >>
    steps:
      - electron-publish:
@@ -2274,8 +2210,8 @@ jobs:
      <<: *env-mac-large-release
      <<: *env-mas-apple-silicon
      <<: *env-release-build
-      <<: *env-enable-sccache
      UPLOAD_TO_S3: << pipeline.parameters.upload-to-s3 >>
+      <<: *env-ninja-status
    steps:
      - electron-publish:
          attach: true
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -8,45 +8,45 @@
  "rules": {
    "semi": ["error", "always"],
    "no-var": "error",
-    "no-unused-vars": 0,
-    "no-global-assign": 0,
-    "guard-for-in": 2,
+    "no-unused-vars": "off",
+    "no-global-assign": "off",
+    "guard-for-in": "error",
    "@typescript-eslint/no-unused-vars": ["error", {
      "vars": "all",
      "args": "after-used",
-      "ignoreRestSiblings": false
+      "ignoreRestSiblings": true
    }],
    "prefer-const": ["error", {
      "destructuring": "all"
    }],
    "standard/no-callback-literal": "off",
-    "node/no-deprecated-api": 0
+    "node/no-deprecated-api": "off"
  },
  "parserOptions": {
    "ecmaVersion": 6,
    "sourceType": "module"
  },
-  "globals": {
-    "standardScheme": "readonly",
-    "globalThis": "readonly",
-    "BUILDFLAG": "readonly",
-    "ENABLE_DESKTOP_CAPTURER": "readonly",
-    "ENABLE_REMOTE_MODULE": "readonly",
-    "ENABLE_VIEWS_API": "readonly",
-    "BigInt": "readonly"
-  },
  "overrides": [
    {
      "files": "*.js",
      "rules": {
-          "@typescript-eslint/no-unused-vars": "off"
+        "@typescript-eslint/no-unused-vars": "off"
+      }
+    },
+    {
+      "files": "*.ts",
+      "rules": {
+        "no-undef": "off",
+        "no-redeclare": "off",
+        "@typescript-eslint/no-redeclare": ["error"],
+        "no-use-before-define": "off"
      }
    },
    {
      "files": "*.d.ts",
      "rules": {
-          "no-useless-constructor": "off",
-          "@typescript-eslint/no-unused-vars": "off"
+        "no-useless-constructor": "off",
+        "@typescript-eslint/no-unused-vars": "off"
      }
    }
  ]
--- 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
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -10,3 +10,12 @@ DEPS                                    @electron/wg-upgrades
 # Releases WG
 /npm/                                   @electron/wg-releases
 /script/release                         @electron/wg-releases
+
+# Security WG
+/lib/browser/rpc-server.ts              @electron/wg-security
+
+# Remote Change Disliker
+/lib/browser/remote/                    @nornagon
+/lib/renderer/remote/                   @nornagon
+/lib/renderer/api/remote.ts             @nornagon
+/docs/api/remote.md                     @nornagon
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -13,9 +13,7 @@ Contributors guide: https://github.com/electron/electron/blob/master/CONTRIBUTIN
 - [ ] `npm test` passes
 - [ ] tests are [changed or added](https://github.com/electron/electron/blob/master/docs/development/testing.md)
 - [ ] relevant documentation is changed or added
- [ ] PR title follows semantic [commit guidelines](https://github.com/electron/electron/blob/master/docs/development/pull-requests.md#commit-message-guidelines)
 - [ ] [PR release notes](https://github.com/electron/clerk/blob/master/README.md) describe the change in a way relevant to app developers, and are [capitalized, punctuated, and past tense](https://github.com/electron/clerk/blob/master/README.md#examples).
- [ ] This is **NOT A BREAKING CHANGE**. Breaking changes may not be merged to master until 11-x-y is branched.

 #### Release Notes

--- a/.gitignore
+++ b/.gitignore
@@ -65,4 +65,7 @@ ts-gen

 # Used to accelerate CI builds
 .depshash
-.depshash-target
+.depshash-target
+
+# Used to accelerate builds after sync
+patches/mtime-cache.json
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -184,7 +184,6 @@ target_gen_default_app_js = "$target_gen_dir/js/default_app"

 typescript_build("default_app_js") {
  deps = [ ":build_electron_definitions" ]
-  type_root = rebase_path("$target_gen_dir/tsc/electron/typings")

  sources = filenames.default_app_ts_sources

@@ -266,21 +265,6 @@ if (is_linux) {
  }
 }

-source_set("manifests") {
-  sources = [
-    "//electron/shell/app/manifests.cc",
-    "//electron/shell/app/manifests.h",
-  ]
-
-  include_dirs = [ "//electron" ]
-
-  deps = [
-    "//electron/shell/common/api:mojo",
-    "//printing/buildflags",
-    "//services/service_manager/public/cpp",
-  ]
-}
-
 npm_action("electron_version_args") {
  script = "generate-version-json"

@@ -303,6 +287,19 @@ templated_file("electron_version_header") {
  args_files = get_target_outputs(":electron_version_args")
 }

+action("electron_fuses") {
+  script = "build/fuses/build.py"
+
+  inputs = [ "build/fuses/fuses.json" ]
+
+  outputs = [
+    "$target_gen_dir/fuses.h",
+    "$target_gen_dir/fuses.cc",
+  ]
+
+  args = rebase_path(outputs)
+}
+
 source_set("electron_lib") {
  configs += [ "//v8:external_startup_data" ]
  configs += [ "//third_party/electron_node:node_internals" ]
@@ -313,9 +310,9 @@ source_set("electron_lib") {
  ]

  deps = [
+    ":electron_fuses",
    ":electron_js2c",
    ":electron_version_header",
-    ":manifests",
    ":resources",
    "buildflags",
    "chromium_src:chrome",
@@ -325,7 +322,6 @@ source_set("electron_lib") {
    "//base/allocator:buildflags",
    "//chrome/app:command_ids",
    "//chrome/app/resources:platform_locale_settings",
-    "//chrome/services/printing/public/mojom",
    "//components/certificate_transparency",
    "//components/language/core/browser",
    "//components/net_log",
@@ -341,7 +337,6 @@ source_set("electron_lib") {
    "//components/viz/service",
    "//content/public/browser",
    "//content/public/child",
-    "//content/public/common:service_names",
    "//content/public/gpu",
    "//content/public/renderer",
    "//content/public/utility",
@@ -372,6 +367,7 @@ 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",
@@ -405,44 +401,26 @@ source_set("electron_lib") {
    defines += [ "GDK_DISABLE_DEPRECATION_WARNINGS" ]
  }

-  extra_source_filters = []
-  if (!is_linux) {
-    extra_source_filters += [
-      "*\bx/*",
-      "*_x11.h",
-      "*_x11.cc",
-      "*_gtk.h",
-      "*_gtk.cc",
-      "*\blibrary_loaders/*",
-    ]
-  }
-  if (!is_win) {
-    extra_source_filters += [
-      "*\bwin_*.h",
-      "*\bwin_*.cc",
-    ]
-  }
-  if (!is_posix) {
-    extra_source_filters += [
-      "*_posix.cc",
-      "*_posix.h",
-    ]
-  }
-  if (is_mac) {
-    extra_source_filters += [
-      "*_views.cc",
-      "*_views.h",
-      "*\bviews/*",
-    ]
-  }
  if (!is_mas_build) {
    deps += [ "//components/crash/core/app" ]
  }

-  set_sources_assignment_filter(
-      sources_assignment_filter + extra_source_filters)
  sources = filenames.lib_sources
-  set_sources_assignment_filter(sources_assignment_filter)
+  if (is_win) {
+    sources += filenames.lib_sources_win
+  }
+  if (is_mac) {
+    sources += filenames.lib_sources_mac
+  }
+  if (is_posix) {
+    sources += filenames.lib_sources_posix
+  }
+  if (is_linux) {
+    sources += filenames.lib_sources_linux
+  }
+  if (!is_mac) {
+    sources += filenames.lib_sources_views
+  }

  if (is_component_build) {
    defines += [ "NODE_SHARED_MODE" ]
@@ -513,6 +491,7 @@ source_set("electron_lib") {
    }
  }
  if (is_linux) {
+    libs = [ "xshmfence" ]
    deps += [
      ":libnotify_loader",
      "//build/config/linux/gtk",
@@ -525,13 +504,13 @@ source_set("electron_lib") {
      "//ui/wm",
    ]
    if (use_x11) {
+      sources += filenames.lib_sources_linux_x11
      deps += [
        "//ui/gfx/x",
        "//ui/gtk/x",
      ]
    }
    configs += [ ":gio_unix" ]
-    configs += [ "//build/config/linux:x11" ]
    defines += [
      # Disable warnings for g_settings_list_schemas.
      "GLIB_DISABLE_DEPRECATION_WARNINGS",
@@ -587,7 +566,6 @@ source_set("electron_lib") {
    sources += [
      "shell/browser/osr/osr_host_display_client.cc",
      "shell/browser/osr/osr_host_display_client.h",
-      "shell/browser/osr/osr_host_display_client_mac.mm",
      "shell/browser/osr/osr_render_widget_host_view.cc",
      "shell/browser/osr/osr_render_widget_host_view.h",
      "shell/browser/osr/osr_video_consumer.cc",
@@ -596,8 +574,13 @@ source_set("electron_lib") {
      "shell/browser/osr/osr_view_proxy.h",
      "shell/browser/osr/osr_web_contents_view.cc",
      "shell/browser/osr/osr_web_contents_view.h",
-      "shell/browser/osr/osr_web_contents_view_mac.mm",
    ]
+    if (is_mac) {
+      sources += [
+        "shell/browser/osr/osr_host_display_client_mac.mm",
+        "shell/browser/osr/osr_web_contents_view_mac.mm",
+      ]
+    }
    deps += [
      "//components/viz/service",
      "//services/viz/public/mojom",
@@ -632,7 +615,10 @@ source_set("electron_lib") {
      "shell/renderer/printing/print_render_frame_helper_delegate.cc",
      "shell/renderer/printing/print_render_frame_helper_delegate.h",
    ]
-    deps += [ "//components/printing/common:mojo_interfaces" ]
+    deps += [
+      "//chrome/services/printing/public/mojom",
+      "//components/printing/common:mojo_interfaces",
+    ]
  }

  if (enable_electron_extensions) {
@@ -642,6 +628,7 @@ source_set("electron_lib") {
      "shell/common/extensions/api",
      "shell/common/extensions/api:extensions_features",
      "//chrome/browser/resources:component_extension_resources",
+      "//components/update_client:update_client",
      "//components/zoom",
      "//extensions/browser",
      "//extensions/browser:core_api_provider",
@@ -670,6 +657,16 @@ source_set("electron_lib") {
      "shell/browser/electron_pdf_web_contents_helper_client.h",
    ]
  }
+
+  sources += get_target_outputs(":electron_fuses")
+
+  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") {
@@ -695,10 +692,10 @@ if (is_mac) {
  action("fake_v8_context_snapshot_generator") {
    script = "build/fake_v8_context_snapshot_generator.py"
    args = [
-      rebase_path("$root_out_dir/v8_context_snapshot.bin"),
-      rebase_path("$root_out_dir/fake/v8_context_snapshot.bin"),
+      rebase_path("$root_out_dir/$v8_context_snapshot_filename"),
+      rebase_path("$root_out_dir/fake/$v8_context_snapshot_filename"),
    ]
-    outputs = [ "$root_out_dir/fake/v8_context_snapshot.bin" ]
+    outputs = [ "$root_out_dir/fake/$v8_context_snapshot_filename" ]
  }

  bundle_data("electron_framework_resources") {
@@ -712,10 +709,10 @@ if (is_mac) {
      public_deps += [ "//v8" ]
      if (use_v8_context_snapshot) {
        if (use_prebuilt_v8_context_snapshot) {
-          sources += [ "$root_out_dir/fake/v8_context_snapshot.bin" ]
+          sources += [ "$root_out_dir/fake/$v8_context_snapshot_filename" ]
          public_deps += [ ":fake_v8_context_snapshot_generator" ]
        } else {
-          sources += [ "$root_out_dir/v8_context_snapshot.bin" ]
+          sources += [ "$root_out_dir/$v8_context_snapshot_filename" ]
          public_deps += [ "//tools/v8_context_snapshot" ]
        }
      } else {
@@ -994,6 +991,8 @@ if (is_mac) {
    deps = [
      ":electron_app_framework_bundle_data",
      ":electron_app_resources",
+      "//base",
+      "//electron/buildflags",
    ]
    if (is_mas_build) {
      deps += [ ":electron_login_helper_app" ]
@@ -1138,22 +1137,38 @@ 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:console" ]
+      configs += [
+        "//build/config/win:windowed",
+        "//build/config/win:delayloads",
      ]

+      if (target_cpu == "arm64") {
+        configs -= [ "//build/config/win:cfi_linker" ]
+        ldflags += [ "/guard:cf,nolongjmp" ]
+      }
+
+      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",
--- a/57
+++ b/57
@@ -14,19 +14,17 @@ gclient_gn_args = [

 vars = {
  'chromium_version':
-    'b04584161e07d4ac110045b7647fa8a81f5f0709',
+    '89.0.4388.2',
  'node_version':
-    'v12.18.3',
+    'v14.15.1',
  'nan_version':
    '2c4ee8a32a299eada3cd6e468bbd0a473bfea96d',
  'squirrel.mac_version':
-    '44468f858ce0d25c27bd5e674abfa104e0119738',
+    'cdc0729c8bf8576bfef18629186e1e9ecf1b0d9f',

-  'boto_version': 'f7574aa6cc2c819430c1f05e9a1a1a666ef8169b',
  'pyyaml_version': '3.12',
  'requests_version': 'e4d59bedfd3c7f4f254f4f5d036587bcd8152458',

-  'boto_git': 'https://github.com/boto',
  'chromium_git': 'https://chromium.googlesource.com',
  'electron_git': 'https://github.com/electron',
  'nodejs_git': 'https://github.com/nodejs',
@@ -40,8 +38,8 @@ vars = {
  # To be able to build clean Chromium from sources.
  'apply_patches': True,

-  # Python interface to Amazon Web Services. Is used for releases only.
-  'checkout_boto': False,
+  # To use an mtime cache for patched files to speed up builds.
+  'use_mtime_cache': True,

  # To allow in-house builds to checkout those manually.
  'checkout_chromium': True,
@@ -80,6 +78,8 @@ vars = {
    False,
  'checkout_google_benchmark':
    False,
+  'checkout_clang_tidy':
+    True,
 }

 deps = {
@@ -99,10 +99,6 @@ deps = {
    'url': (Var("yaml_git")) + '/pyyaml.git@' + (Var("pyyaml_version")),
    'condition': 'checkout_pyyaml and process_deps',
  },
-  'src/electron/vendor/boto': {
-    'url': Var('boto_git') + '/boto.git' + '@' +  Var('boto_version'),
-    'condition': 'checkout_boto and process_deps',
-  },
  'src/electron/vendor/requests': {
    'url': Var('requests_git') + '/requests.git' + '@' +  Var('requests_version'),
    'condition': 'checkout_requests and process_deps',
@@ -121,6 +117,23 @@ deps = {
  }
 }

+pre_deps_hooks = [
+  {
+    'name': 'generate_mtime_cache',
+    'condition': '(checkout_chromium and apply_patches and use_mtime_cache) and process_deps',
+    'pattern': 'src/electron',
+    'action': [
+      'python3',
+      'src/electron/script/patches-mtime-cache.py',
+      'generate',
+      '--cache-file',
+      'src/electron/patches/mtime-cache.json',
+      '--patches-config',
+      'src/electron/patches/config.json',
+    ],
+  },
+]
+
 hooks = [
  {
    'name': 'patch_chromium',
@@ -132,6 +145,18 @@ hooks = [
      'src/electron/patches/config.json',
    ],
  },
+  {
+    'name': 'apply_mtime_cache',
+    'condition': '(checkout_chromium and apply_patches and use_mtime_cache) and process_deps',
+    'pattern': 'src/electron',
+    'action': [
+      'python3',
+      'src/electron/script/patches-mtime-cache.py',
+      'apply',
+      '--cache-file',
+      'src/electron/patches/mtime-cache.json',
+    ],
+  },
  {
    'name': 'electron_external_binaries',
    'pattern': 'src/electron/script/update-external-binaries.py',
@@ -150,16 +175,6 @@ hooks = [
      'import os, subprocess; os.chdir(os.path.join("src", "electron")); subprocess.check_call(["python", "script/lib/npx.py", "yarn@' + (Var("yarn_version")) + '", "install", "--frozen-lockfile"]);',
    ],
  },
-  {
-    'name': 'setup_boto',
-    'pattern': 'src/electron',
-    'condition': 'checkout_boto and process_deps',
-    'action': [
-      'python3',
-      '-c',
-      'import os, subprocess; os.chdir(os.path.join("src", "electron", "vendor", "boto")); subprocess.check_call(["python", "setup.py", "build"]);',
-    ],
-  },
  {
    'name': 'setup_requests',
    'pattern': 'src/electron',
--- a/2
+++ b/2
@@ -1 +1 @@
-11.0.0-nightly.20200826
+12.0.0-beta.22
--- a/README.md
+++ b/README.md
@@ -4,6 +4,7 @@
 [![CircleCI Build Status](https://circleci.com/gh/electron/electron/tree/master.svg?style=shield)](https://circleci.com/gh/electron/electron/tree/master)
 [![AppVeyor Build Status](https://ci.appveyor.com/api/projects/status/4lggi9dpjc1qob7k/branch/master?svg=true)](https://ci.appveyor.com/project/electron-bot/electron-ljo26/branch/master)
 [![devDependency Status](https://david-dm.org/electron/electron/dev-status.svg)](https://david-dm.org/electron/electron?type=dev)
+[![Electron Discord Invite](https://img.shields.io/discord/745037351163527189?color=%237289DA&label=chat&logo=discord&logoColor=white)](https://discord.com/invite/electron)

 :memo: Available Translations: 🇨🇳 🇹🇼 🇧🇷 🇪🇸 🇰🇷 🇯🇵 🇷🇺 🇫🇷 🇹🇭 🇳🇱 🇹🇷 🇮🇩 🇺🇦 🇨🇿 🇮🇹 🇵🇱.
 View these docs in other languages at [electron/i18n](https://github.com/electron/i18n/tree/master/content/).
@@ -28,15 +29,12 @@ 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

--- a/appveyor.yml
+++ b/appveyor.yml
@@ -53,7 +53,9 @@ 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
        }
      }
@@ -64,10 +66,9 @@ build_script:
  - update_depot_tools.bat
  - ps: Move-Item $env:APPVEYOR_BUILD_FOLDER -Destination src\electron
  - ps: $env:CHROMIUM_BUILDTOOLS_PATH="$pwd\src\buildtools"
-  - ps: $env:SCCACHE_PATH="$pwd\src\electron\external_binaries\sccache.exe"
  - ps: >-
      if ($env:GN_CONFIG -eq 'release') {
-        $env:GCLIENT_EXTRA_ARGS="$env:GCLIENT_EXTRA_ARGS --custom-var=checkout_boto=True --custom-var=checkout_requests=True"
+        $env:GCLIENT_EXTRA_ARGS="$env:GCLIENT_EXTRA_ARGS --custom-var=checkout_requests=True"
      } else {
        $env:NINJA_STATUS="[%r processes, %f/%t @ %o/s : %es] "
      }
@@ -99,6 +100,11 @@ build_script:
          } else {
            # update external binaries
            python src/electron/script/update-external-binaries.py
+            # update angle
+            cd src\third_party\angle
+            git remote set-url origin  https://chromium.googlesource.com/angle/angle.git
+            git fetch
+            cd ..\..\..
          }
        } else {    
          # file does not exist, gclient sync, then zip
@@ -114,38 +120,38 @@ build_script:
      if ($env:SAVE_GCLIENT_SRC -eq 'true') {
        # archive current source for future use 
        # only run on x64/woa to avoid contention saving
-        if ($(7z a $zipfile src -xr!android_webview -xr!electron -xr'!*\.git' -xr!third_party\WebKit\LayoutTests! -xr!third_party\blink\web_tests -xr!third_party\blink\perf_tests -slp -t7z -mmt=30;$LASTEXITCODE -ne 0)) {
+        $(7z a $zipfile src -xr!android_webview -xr!electron -xr'!*\.git' -xr!third_party\WebKit\LayoutTests! -xr!third_party\blink\web_tests -xr!third_party\blink\perf_tests -slp -t7z -mmt=30)
+        if ($LASTEXITCODE -ne 0) {
          Write-warning "Could not save source to shared drive; continuing anyway"
        }
-        # build time generation of file gen/angle/commit.h depends on
-        # third_party/angle/.git/HEAD.
-        # https://chromium-review.googlesource.com/c/angle/angle/+/2074924
-        if ($(7z a $zipfile src\third_party\angle\.git\HEAD;$LASTEXITCODE -ne 0)) {
-          Write-warning "Failed to add third_party\angle\.git\HEAD; continuing anyway"
+        # build time generation of file gen/angle/angle_commit.h depends on
+        # third_party/angle/.git
+        # https://chromium-review.googlesource.com/c/angle/angle/+/2074924       
+        $(7z a $zipfile src\third_party\angle\.git)
+        if ($LASTEXITCODE -ne 0) {
+          Write-warning "Failed to add third_party\angle\.git; continuing anyway"
        }
      }
  - ps: >-
-      if ($env:GN_CONFIG -ne 'release') {
-        if (Test-Path 'env:RAW_GOMA_AUTH') {
-          $env:GOMA_OAUTH2_CONFIG_FILE = "$pwd\.goma_oauth2_config"
-          $env:RAW_GOMA_AUTH | Set-Content $env:GOMA_OAUTH2_CONFIG_FILE      
-        }
-        git clone https://github.com/electron/build-tools.git
-        cd build-tools
-        npm install
-        mkdir third_party
-        node -e "require('./src/utils/goma.js').downloadAndPrepare()"
-        $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 ..
-        .\src\electron\script\start-goma.ps1 -gomaDir $env:LOCAL_GOMA_DIR
+      if (Test-Path 'env:RAW_GOMA_AUTH') {
+        $env:GOMA_OAUTH2_CONFIG_FILE = "$pwd\.goma_oauth2_config"
+        $env:RAW_GOMA_AUTH | Set-Content $env:GOMA_OAUTH2_CONFIG_FILE
      }
+  - git clone https://github.com/electron/build-tools.git
+  - cd build-tools
+  - npm install
+  - mkdir third_party
+  - ps: >-
+      node -e "require('./src/utils/goma.js').downloadAndPrepare({ gomaOneForAll: true })"
+  - ps: $env:GN_GOMA_FILE = node -e "console.log(require('./src/utils/goma.js').gnFilePath)"
+  - ps: $env:LOCAL_GOMA_DIR = node -e "console.log(require('./src/utils/goma.js').dir)"
+  - cd ..
+  - ps: .\src\electron\script\start-goma.ps1 -gomaDir $env:LOCAL_GOMA_DIR
  - cd src
  - set BUILD_CONFIG_PATH=//electron/build/args/%GN_CONFIG%.gn 
-  - if DEFINED GN_GOMA_FILE (gn gen out/Default "--args=import(\"%BUILD_CONFIG_PATH%\") import(\"%GN_GOMA_FILE%\") %GN_EXTRA_ARGS% ") else (gn gen out/Default "--args=import(\"%BUILD_CONFIG_PATH%\") %GN_EXTRA_ARGS% cc_wrapper=\"%SCCACHE_PATH%\"")
+  - gn gen out/Default "--args=import(\"%BUILD_CONFIG_PATH%\") import(\"%GN_GOMA_FILE%\") %GN_EXTRA_ARGS% "
  - gn check out/Default //electron:electron_lib
  - gn check out/Default //electron:electron_app
-  - gn check out/Default //electron:manifests
  - gn check out/Default //electron/shell/common/api:mojo
  - if DEFINED GN_GOMA_FILE (ninja -j 300 -C out/Default electron:electron_app) else (ninja -C out/Default electron:electron_app)
  - if "%GN_CONFIG%"=="testing" ( python C:\depot_tools\post_build_ninja_summary.py -C out\Default )
@@ -161,7 +167,7 @@ build_script:
  - ninja -C out/Default electron:hunspell_dictionaries_zip
  - ninja -C out/Default electron:electron_chromedriver_zip
  - ninja -C out/Default third_party/electron_node:headers
-  - if "%GN_CONFIG%"=="testing" ( python %LOCAL_GOMA_DIR%\goma_ctl.py stat )
+  - python %LOCAL_GOMA_DIR%\goma_ctl.py stat
  - python electron/build/profile_toolchain.py --output-json=out/Default/windows_toolchain_profile.json
  - appveyor PushArtifact out/Default/windows_toolchain_profile.json
  - appveyor PushArtifact out/Default/dist.zip
@@ -205,7 +211,8 @@ test_script:
        echo "Skipping tests for $env:GN_CONFIG build"
      }
  - cd electron
-  - if "%RUN_TESTS%"=="true" ( echo Running test suite & node script/yarn test -- --trace-uncaught --enable-logging)
+  # CalculateNativeWinOcclusion is disabled due to https://bugs.chromium.org/p/chromium/issues/detail?id=1139022
+  - if "%RUN_TESTS%"=="true" ( echo Running test suite & node script/yarn test -- --trace-uncaught --enable-logging --disable-features=CalculateNativeWinOcclusion )
  - cd ..
  - if "%RUN_TESTS%"=="true" ( echo Verifying non proprietary ffmpeg & python electron\script\verify-ffmpeg.py --build-dir out\Default --source-root %cd% --ffmpeg-path out\ffmpeg )
  - echo "About to verify mksnapshot"
@@ -219,10 +226,10 @@ deploy_script:
      if (Test-Path Env:\ELECTRON_RELEASE) {
        if (Test-Path Env:\UPLOAD_TO_S3) {
          Write-Output "Uploading Electron release distribution to s3"
-          & python script\release\uploaders\upload.py --upload_to_s3
+          & python script\release\uploaders\upload.py --verbose --upload_to_s3
        } else {
          Write-Output "Uploading Electron release distribution to github releases"
-          & python script\release\uploaders\upload.py
+          & python script\release\uploaders\upload.py --verbose
        }
      } elseif (Test-Path Env:\TEST_WOA) {
        node script/release/ci-release-build.js --job=electron-woa-testing --ci=VSTS --armTest --appveyorJobId=$env:APPVEYOR_JOB_ID $env:APPVEYOR_REPO_BRANCH
--- a/azure-pipelines-woa.yml
+++ b/azure-pipelines-woa.yml
@@ -63,7 +63,8 @@ steps:
    set npm_config_nodedir=%cd%\out\Default\gen\node_headers
    set npm_config_arch=arm64
    cd electron
-    node script/yarn test -- --enable-logging --verbose
+    # CalculateNativeWinOcclusion is disabled due to https://bugs.chromium.org/p/chromium/issues/detail?id=1139022
+    node script/yarn test -- --enable-logging --verbose --disable-features=CalculateNativeWinOcclusion
  displayName: 'Run Electron tests'
  env:
    ELECTRON_OUT_DIR: Default
@@ -92,6 +93,6 @@ steps:
  condition: always()

 - powershell: |
-    Remove-Item -path $env:APPDATA/Electron* -Recurse
+    Remove-Item -path $env:APPDATA/Electron* -Recurse -Force
  displayName: 'Delete user app data directories'
  condition: always()
--- a/build/args/all.gn
+++ b/build/args/all.gn
@@ -2,7 +2,7 @@ is_electron_build = true
 root_extra_deps = [ "//electron" ]

 # Registry of NMVs --> https://github.com/nodejs/node/blob/master/doc/abi_version_registry.json
-node_module_version = 82
+node_module_version = 87

 v8_promise_internal_field_count = 1
 v8_typed_array_max_size_in_heap = 0
--- a/build/fuses/build.py
+++ b/build/fuses/build.py
@@ -0,0 +1,101 @@
+#!/usr/bin/env python3
+
+import json
+import os
+import sys
+
+dir_path = os.path.dirname(os.path.realpath(__file__))
+
+SENTINEL = "dL7pKGdnNz796PbbjQWNKmHXBZaB9tsX"
+
+TEMPLATE_H = """
+#ifndef ELECTRON_FUSES_H_
+#define ELECTRON_FUSES_H_
+
+#if defined(WIN32)
+#define FUSE_EXPORT __declspec(dllexport)
+#else
+#define FUSE_EXPORT __attribute__((visibility("default")))
+#endif
+
+namespace electron {
+
+namespace fuses {
+
+extern const volatile char kFuseWire[];
+
+{getters}
+
+}  // namespace fuses
+
+}  // namespace electron
+
+#endif  // ELECTRON_FUSES_H_
+"""
+
+TEMPLATE_CC = """
+#include "electron/fuses.h"
+
+namespace electron {
+
+namespace fuses {
+
+const volatile char kFuseWire[] = { /* sentinel */ {sentinel}, /* fuse_version */ {fuse_version}, /* fuse_wire_length */ {fuse_wire_length}, /* fuse_wire */ {initial_config}};
+
+{getters}
+
+}
+
+}
+"""
+
+with open(os.path.join(dir_path, "fuses.json"), 'r') as f:
+  fuse_defaults = json.load(f)
+
+fuse_version = fuse_defaults['_version']
+del fuse_defaults['_version']
+del fuse_defaults['_schema']
+del fuse_defaults['_comment']
+
+if fuse_version >= pow(2, 8):
+  raise Exception("Fuse version can not exceed one byte in size")
+
+fuses = fuse_defaults.keys()
+
+initial_config = ""
+getters_h = ""
+getters_cc = ""
+index = len(SENTINEL) + 1
+for fuse in fuses:
+  index += 1
+  initial_config += fuse_defaults[fuse]
+  name = ''.join(word.title() for word in fuse.split('_'))
+  getters_h += "FUSE_EXPORT bool Is{name}Enabled();\n".replace("{name}", name)
+  getters_cc += """
+bool Is{name}Enabled() {
+  return kFuseWire[{index}] == '1';
+}
+""".replace("{name}", name).replace("{index}", str(index))
+
+def c_hex(n):
+  s = hex(n)[2:]
+  return "0x" + s.rjust(2, '0')
+
+def hex_arr(s):
+  arr = []
+  for char in s:
+    arr.append(c_hex(ord(char)))
+  return ",".join(arr)
+
+header = TEMPLATE_H.replace("{getters}", getters_h.strip())
+impl = TEMPLATE_CC.replace("{sentinel}", hex_arr(SENTINEL))
+impl = impl.replace("{fuse_version}", c_hex(fuse_version))
+impl = impl.replace("{fuse_wire_length}", c_hex(len(fuses)))
+impl = impl.replace("{initial_config}", hex_arr(initial_config))
+impl = impl.replace("{getters}", getters_cc.strip())
+
+with open(sys.argv[1], 'w') as f:
+  f.write(header)
+
+with open(sys.argv[2], 'w') as f:
+  f.write(impl)
--- a/build/fuses/fuses.json
+++ b/build/fuses/fuses.json
@@ -0,0 +1,6 @@
+{
+  "_comment": "Modifying the fuse schema in any breaking way should result in the _version prop being incremented.  NEVER remove a fuse or change its meaning, instead mark it as removed with 'r'",
+  "_schema": "0 == off, 1 == on, r == removed fuse",
+  "_version": 1,
+  "run_as_node": "1"
+}
--- a/build/npm-run.py
+++ b/build/npm-run.py
@@ -15,5 +15,12 @@ args = [cmd, "run",
 try:
    subprocess.check_output(args, stderr=subprocess.STDOUT)
 except subprocess.CalledProcessError as e:
-    print("NPM script '" + sys.argv[2] + "' failed with code '" + str(e.returncode) + "':\n" + e.output)
+    print(
+        "NPM script '"
+        + sys.argv[2]
+        + "' failed with code '"
+        + str(e.returncode)
+        + "':\n"
+        + e.output
+    )
    sys.exit(e.returncode)
--- a/build/profile_toolchain.py
+++ b/build/profile_toolchain.py
@@ -11,7 +11,6 @@ import find_depot_tools
 from vs_toolchain import \
    SetEnvironmentAndGetRuntimeDllDirs, \
    SetEnvironmentAndGetSDKDir, \
-    GetVisualStudioVersion, \
    NormalizePath

 sys.path.append("%s/win_toolchain" % find_depot_tools.add_depot_tools_to_path())
@@ -20,10 +19,10 @@ from get_toolchain_if_necessary import CalculateHash


@contextlib.contextmanager
-def cwd(dir):
+def cwd(directory):
    curdir = os.getcwd()
    try:
-        os.chdir(dir)
+        os.chdir(directory)
        yield
    finally:
        os.chdir(curdir)
@@ -71,12 +70,18 @@ def windows_profile():
    win_sdk_dir = SetEnvironmentAndGetSDKDir()
    path = NormalizePath(os.environ['GYP_MSVS_OVERRIDE_PATH'])

+    # since current windows executable are symbols path dependant,
+    # profile the current directory too
    return {
-        'pwd': os.getcwd(), # since current windows executable are symbols path dependant, profile the current directory too
+        'pwd': os.getcwd(),
        'installed_software': windows_installed_software(),
        'sdks': [
            {'name': 'vs', 'path': path, 'hash': calculate_hash(path)},
-            {'name': 'wsdk', 'path': win_sdk_dir, 'hash': calculate_hash(win_sdk_dir)}
+            {
+                'name': 'wsdk',
+                'path': win_sdk_dir,
+                'hash': calculate_hash(win_sdk_dir),
+            },
        ],
        'runtime_lib_dirs': runtime_dll_dirs,
    }
@@ -94,5 +99,5 @@ if __name__ == '__main__':
  parser = optparse.OptionParser()
  parser.add_option('--output-json', metavar='FILE', default='profile.json',
                    help='write information about toolchain to FILE')
-  options, args = parser.parse_args()
-  sys.exit(main(options))
+  opts, args = parser.parse_args()
+  sys.exit(main(opts))
--- a/build/run-in-dir.py
+++ b/build/run-in-dir.py
@@ -1,6 +1,5 @@
 import sys
 import os
-import subprocess

 def main(argv):
  cwd = argv[1]
--- a/build/strip_framework.py
+++ b/build/strip_framework.py
@@ -12,5 +12,7 @@ subprocess.check_output(["rm", "-rf", dest])
 subprocess.check_output(["cp", "-a", source, dest])

 # Strip headers, we do not need to ship them
-subprocess.check_output(["rm", "-r", os.path.join(dest, 'Headers')])
-subprocess.check_output(["rm", "-r", os.path.join(dest, 'Versions', 'Current', 'Headers')])
+subprocess.check_output(["rm", "-r", os.path.join(dest, "Headers")])
+subprocess.check_output(
+    ["rm", "-r", os.path.join(dest, "Versions", "Current", "Headers")]
+)
--- a/build/tsc.gni
+++ b/build/tsc.gni
@@ -26,19 +26,12 @@ template("typescript_build") {
      "//electron/typings/internal-electron.d.ts",
    ]

-    type_roots = "node_modules/@types,typings"
-    if (defined(invoker.type_root)) {
-      type_roots += "," + invoker.type_root
-    }
-
    base_out_path = invoker.output_gen_dir + "/electron/"
    args = [
      "-p",
      rebase_path(invoker.tsconfig),
      "--outDir",
      rebase_path("$base_out_path" + invoker.output_dir_name),
-      "--typeRoots",
-      type_roots,
    ]

    outputs = []
--- a/build/webpack/get-outputs.js
+++ b/build/webpack/get-outputs.js
@@ -1,2 +0,0 @@
-process.env.PRINT_WEBPACK_GRAPH = true;
-require('./run-compiler');
--- a/build/webpack/run-compiler.js
+++ b/build/webpack/run-compiler.js
@@ -1,38 +0,0 @@
-const fs = require('fs');
-const path = require('path');
-const webpack = require('webpack');
-
-const configPath = process.argv[2];
-const outPath = path.resolve(process.argv[3]);
-const config = require(configPath);
-config.output = {
-  path: path.dirname(outPath),
-  filename: path.basename(outPath)
-};
-
-const { wrapInitWithProfilingTimeout } = config;
-delete config.wrapInitWithProfilingTimeout;
-
-webpack(config, (err, stats) => {
-  if (err) {
-    console.error(err);
-    process.exit(1);
-  } else if (stats.hasErrors()) {
-    console.error(stats.toString('normal'));
-    process.exit(1);
-  } else {
-    if (wrapInitWithProfilingTimeout) {
-      const contents = fs.readFileSync(outPath, 'utf8');
-      const newContents = `function ___electron_webpack_init__() {
-${contents}
-};
-if ((globalThis.process || binding.process).argv.includes("--profile-electron-init")) {
-  setTimeout(___electron_webpack_init__, 0);
-} else {
-  ___electron_webpack_init__();
-}`;
-      fs.writeFileSync(outPath, newContents);
-    }
-    process.exit(0);
-  }
-});
--- a/build/webpack/webpack.config.base.js
+++ b/build/webpack/webpack.config.base.js
@@ -2,16 +2,12 @@ const fs = require('fs');
 const path = require('path');
 const webpack = require('webpack');
 const TerserPlugin = require('terser-webpack-plugin');
+const WrapperPlugin = require('wrapper-webpack-plugin');

 const electronRoot = path.resolve(__dirname, '../..');

-const onlyPrintingGraph = !!process.env.PRINT_WEBPACK_GRAPH;
-
 class AccessDependenciesPlugin {
  apply (compiler) {
-    // Only hook into webpack when we are printing the dependency graph
-    if (!onlyPrintingGraph) return;
-
    compiler.hooks.compilation.tap('AccessDependenciesPlugin', compilation => {
      compilation.hooks.finishModules.tap('AccessDependenciesPlugin', modules => {
        const filePaths = modules.map(m => m.resource).filter(p => p).map(p => path.relative(electronRoot, p));
@@ -21,55 +17,13 @@ class AccessDependenciesPlugin {
  }
 }

-const defines = {
-  BUILDFLAG: onlyPrintingGraph ? '(a => a)' : ''
-};
-
-const buildFlagsPrefix = '--buildflags=';
-const buildFlagArg = process.argv.find(arg => arg.startsWith(buildFlagsPrefix));
-
-if (buildFlagArg) {
-  const buildFlagPath = buildFlagArg.substr(buildFlagsPrefix.length);
-
-  const flagFile = fs.readFileSync(buildFlagPath, 'utf8');
-  for (const line of flagFile.split(/(\r\n|\r|\n)/g)) {
-    const flagMatch = line.match(/#define BUILDFLAG_INTERNAL_(.+?)\(\) \(([01])\)/);
-    if (flagMatch) {
-      const [, flagName, flagValue] = flagMatch;
-      defines[flagName] = JSON.stringify(Boolean(parseInt(flagValue, 10)));
-    }
-  }
-}
-
-const ignoredModules = [];
-
-if (defines.ENABLE_DESKTOP_CAPTURER === 'false') {
-  ignoredModules.push(
-    '@electron/internal/browser/desktop-capturer',
-    '@electron/internal/browser/api/desktop-capturer',
-    '@electron/internal/renderer/api/desktop-capturer'
-  );
-}
-
-if (defines.ENABLE_REMOTE_MODULE === 'false') {
-  ignoredModules.push(
-    '@electron/internal/browser/remote/server',
-    '@electron/internal/renderer/api/remote'
-  );
-}
-
-if (defines.ENABLE_VIEWS_API === 'false') {
-  ignoredModules.push(
-    '@electron/internal/browser/api/views/image-view.js'
-  );
-}
-
 module.exports = ({
  alwaysHasNode,
  loadElectronFromAlternateTarget,
  targetDeletesNodeGlobals,
  target,
-  wrapInitWithProfilingTimeout
+  wrapInitWithProfilingTimeout,
+  wrapInitWithTryCatch
 }) => {
  let entry = path.resolve(electronRoot, 'lib', target, 'init.ts');
  if (!fs.existsSync(entry)) {
@@ -78,75 +32,148 @@ module.exports = ({

  const electronAPIFile = path.resolve(electronRoot, 'lib', loadElectronFromAlternateTarget || target, 'api', 'exports', 'electron.ts');

-  return ({
-    mode: 'development',
-    devtool: false,
-    entry,
-    target: alwaysHasNode ? 'node' : 'web',
-    output: {
-      filename: `${target}.bundle.js`
-    },
-    wrapInitWithProfilingTimeout,
-    resolve: {
-      alias: {
-        '@electron/internal': path.resolve(electronRoot, 'lib'),
-        electron$: electronAPIFile,
-        'electron/main$': electronAPIFile,
-        'electron/renderer$': electronAPIFile,
-        'electron/common$': electronAPIFile,
-        // Force timers to resolve to our dependency that doesn't use window.postMessage
-        timers: path.resolve(electronRoot, 'node_modules', 'timers-browserify', 'main.js')
-      },
-      extensions: ['.ts', '.js']
-    },
-    module: {
-      rules: [{
-        test: (moduleName) => !onlyPrintingGraph && ignoredModules.includes(moduleName),
-        loader: 'null-loader'
-      }, {
-        test: /\.ts$/,
-        loader: 'ts-loader',
-        options: {
-          configFile: path.resolve(electronRoot, 'tsconfig.electron.json'),
-          transpileOnly: onlyPrintingGraph,
-          ignoreDiagnostics: [
-            // File '{0}' is not under 'rootDir' '{1}'.
-            6059
-          ]
+  return (env = {}, argv = {}) => {
+    const onlyPrintingGraph = !!env.PRINT_WEBPACK_GRAPH;
+    const outputFilename = argv['output-filename'] || `${target}.bundle.js`;
+
+    const defines = {
+      BUILDFLAG: onlyPrintingGraph ? '(a => a)' : ''
+    };
+
+    if (env.buildflags) {
+      const flagFile = fs.readFileSync(env.buildflags, 'utf8');
+      for (const line of flagFile.split(/(\r\n|\r|\n)/g)) {
+        const flagMatch = line.match(/#define BUILDFLAG_INTERNAL_(.+?)\(\) \(([01])\)/);
+        if (flagMatch) {
+          const [, flagName, flagValue] = flagMatch;
+          defines[flagName] = JSON.stringify(Boolean(parseInt(flagValue, 10)));
        }
-      }]
-    },
-    node: {
-      __dirname: false,
-      __filename: false,
-      // We provide our own "timers" import above, any usage of setImmediate inside
-      // one of our renderer bundles should import it from the 'timers' package
-      setImmediate: false
-    },
-    optimization: {
-      minimize: true,
-      minimizer: [
-        new TerserPlugin({
-          terserOptions: {
-            keep_classnames: true,
-            keep_fnames: true
-          }
-        })
-      ]
-    },
-    plugins: [
-      new AccessDependenciesPlugin(),
-      ...(targetDeletesNodeGlobals ? [
-        new webpack.ProvidePlugin({
-          process: ['@electron/internal/common/webpack-provider', 'process'],
-          global: ['@electron/internal/common/webpack-provider', '_global'],
-          Buffer: ['@electron/internal/common/webpack-provider', 'Buffer']
-        })
-      ] : []),
-      new webpack.ProvidePlugin({
-        Promise: ['@electron/internal/common/webpack-globals-provider', 'Promise']
-      }),
-      new webpack.DefinePlugin(defines)
-    ]
-  });
+      }
+    }
+
+    const ignoredModules = [];
+
+    if (defines.ENABLE_DESKTOP_CAPTURER === 'false') {
+      ignoredModules.push(
+        '@electron/internal/browser/desktop-capturer',
+        '@electron/internal/browser/api/desktop-capturer',
+        '@electron/internal/renderer/api/desktop-capturer'
+      );
+    }
+
+    if (defines.ENABLE_REMOTE_MODULE === 'false') {
+      ignoredModules.push(
+        '@electron/internal/browser/remote/server',
+        '@electron/internal/renderer/api/remote'
+      );
+    }
+
+    if (defines.ENABLE_VIEWS_API === 'false') {
+      ignoredModules.push(
+        '@electron/internal/browser/api/views/image-view.js'
+      );
+    }
+
+    const plugins = [];
+
+    if (onlyPrintingGraph) {
+      plugins.push(new AccessDependenciesPlugin());
+    }
+
+    if (targetDeletesNodeGlobals) {
+      plugins.push(new webpack.ProvidePlugin({
+        process: ['@electron/internal/common/webpack-provider', 'process'],
+        global: ['@electron/internal/common/webpack-provider', '_global'],
+        Buffer: ['@electron/internal/common/webpack-provider', 'Buffer']
+      }));
+    }
+
+    plugins.push(new webpack.ProvidePlugin({
+      Promise: ['@electron/internal/common/webpack-globals-provider', 'Promise']
+    }));
+
+    plugins.push(new webpack.DefinePlugin(defines));
+
+    if (wrapInitWithProfilingTimeout) {
+      plugins.push(new WrapperPlugin({
+        header: 'function ___electron_webpack_init__() {',
+        footer: `
+};
+if ((globalThis.process || binding.process).argv.includes("--profile-electron-init")) {
+  setTimeout(___electron_webpack_init__, 0);
+} else {
+  ___electron_webpack_init__();
+}`
+      }));
+    }
+
+    if (wrapInitWithTryCatch) {
+      plugins.push(new WrapperPlugin({
+        header: 'try {',
+        footer: `
+} catch (err) {
+  console.error('Electron ${outputFilename} script failed to run');
+  console.error(err);
+}`
+      }));
+    }
+
+    return {
+      mode: 'development',
+      devtool: false,
+      entry,
+      target: alwaysHasNode ? 'node' : 'web',
+      output: {
+        filename: outputFilename
+      },
+      resolve: {
+        alias: {
+          '@electron/internal': path.resolve(electronRoot, 'lib'),
+          electron$: electronAPIFile,
+          'electron/main$': electronAPIFile,
+          'electron/renderer$': electronAPIFile,
+          'electron/common$': electronAPIFile,
+          // Force timers to resolve to our dependency that doesn't use window.postMessage
+          timers: path.resolve(electronRoot, 'node_modules', 'timers-browserify', 'main.js')
+        },
+        extensions: ['.ts', '.js']
+      },
+      module: {
+        rules: [{
+          test: (moduleName) => !onlyPrintingGraph && ignoredModules.includes(moduleName),
+          loader: 'null-loader'
+        }, {
+          test: /\.ts$/,
+          loader: 'ts-loader',
+          options: {
+            configFile: path.resolve(electronRoot, 'tsconfig.electron.json'),
+            transpileOnly: onlyPrintingGraph,
+            ignoreDiagnostics: [
+              // File '{0}' is not under 'rootDir' '{1}'.
+              6059
+            ]
+          }
+        }]
+      },
+      node: {
+        __dirname: false,
+        __filename: false,
+        // We provide our own "timers" import above, any usage of setImmediate inside
+        // one of our renderer bundles should import it from the 'timers' package
+        setImmediate: false
+      },
+      optimization: {
+        minimize: true,
+        minimizer: [
+          new TerserPlugin({
+            terserOptions: {
+              keep_classnames: true,
+              keep_fnames: true
+            }
+          })
+        ]
+      },
+      plugins
+    };
+  };
 };
--- 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
 });
--- 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
 });
--- a/build/webpack/webpack.config.sandboxed_renderer.js
+++ b/build/webpack/webpack.config.sandboxed_renderer.js
@@ -1,5 +1,6 @@
 module.exports = require('./webpack.config.base')({
  target: 'sandboxed_renderer',
  alwaysHasNode: false,
-  wrapInitWithProfilingTimeout: true
+  wrapInitWithProfilingTimeout: true,
+  wrapInitWithTryCatch: true
 });
--- 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
 });
--- a/build/webpack/webpack.gni
+++ b/build/webpack/webpack.gni
@@ -16,7 +16,6 @@ template("webpack_build") {
    inputs = [
               invoker.config_file,
               "//electron/build/webpack/webpack.config.base.js",
-               "//electron/build/webpack/run-compiler.js",
               "//electron/tsconfig.json",
               "//electron/yarn.lock",
               "//electron/typings/internal-ambient.d.ts",
@@ -24,9 +23,12 @@ template("webpack_build") {
             ] + invoker.inputs

    args = [
+      "--config",
      rebase_path(invoker.config_file),
-      rebase_path(invoker.out_file),
-      "--buildflags=" + rebase_path("$target_gen_dir/buildflags/buildflags.h"),
+      "--output-filename=" + get_path_info(invoker.out_file, "file"),
+      "--output-path=" + rebase_path(get_path_info(invoker.out_file, "dir")),
+      "--env.buildflags=" +
+          rebase_path("$target_gen_dir/buildflags/buildflags.h"),
    ]
    deps += [ "buildflags" ]

--- a/build/zip.py
+++ b/build/zip.py
@@ -9,31 +9,36 @@ EXTENSIONS_TO_SKIP = [
  '.pdb',
  '.mojom.js',
  '.mojom-lite.js',
-  '.info'
+  '.info',
+  '.m.js'
 ]

 PATHS_TO_SKIP = [
-  'angledata', #Skipping because it is an output of //ui/gl that we don't need
-  './libVkICD_mock_', #Skipping because these are outputs that we don't need
-  './VkICD_mock_', #Skipping because these are outputs that we don't need
-
-  # Skipping because its an output of create_bundle from //build/config/mac/rules.gni
-  # that we don't need
+  # Skip because it is an output of //ui/gl that we don't need.
+  'angledata',
+  # Skip because these are outputs that we don't need.
+  './libVkICD_mock_',
+  # Skip because these are outputs that we don't need.
+  './VkICD_mock_',
+  # Skip because its an output of create_bundle from
+  # //build/config/mac/rules.gni that we don't need
  'Electron.dSYM',
-
+  # Refs https://chromium-review.googlesource.com/c/angle/angle/+/2425197.
+  # Remove this when Angle themselves remove the file:
+  # https://issuetracker.google.com/issues/168736059
+  'gen/angle/angle_commit.h',
  # //chrome/browser:resources depends on this via
  # //chrome/browser/resources/ssl/ssl_error_assistant, but we don't need to
  # ship it.
  'pyproto',
-
  # On Windows, this binary doesn't exist (the crashpad handler is built-in).
  # On MacOS, the binary is called 'chrome_crashpad_handler' and is inside the
  # app bundle.
  # On Linux, we don't use crashpad, but this binary is still built for some
  # reason. Exclude it from the zip.
  './crashpad_handler',
-
-  'resources/inspector', #Skipping because these are outputs that we don't need
+  # Skip because these are outputs that we don't need.
+  'resources/inspector',
 ]

 def skip_path(dep, dist_zip, target_cpu):
@@ -46,7 +51,12 @@ def skip_path(dep, dist_zip, target_cpu):
  should_skip = (
    any(dep.startswith(path) for path in PATHS_TO_SKIP) or
    any(dep.endswith(ext) for ext in EXTENSIONS_TO_SKIP) or
-    ('arm' in target_cpu and dist_zip == 'mksnapshot.zip' and dep == 'snapshot_blob.bin'))
+    (
+      "arm" in target_cpu
+      and dist_zip == "mksnapshot.zip"
+      and dep == "snapshot_blob.bin"
+    )
+  )
  if should_skip:
    print("Skipping {}".format(dep))
  return should_skip
@@ -60,7 +70,7 @@ def execute(argv):
    raise e

 def main(argv):
-  dist_zip, runtime_deps, target_cpu, target_os, flatten_val = argv
+  dist_zip, runtime_deps, target_cpu, _, flatten_val = argv
  should_flatten = flatten_val == "true"
  dist_files = set()
  with open(runtime_deps) as f:
@@ -71,17 +81,28 @@ def main(argv):
  if sys.platform == 'darwin' and not should_flatten:
    execute(['zip', '-r', '-y', dist_zip] + list(dist_files))
  else:
-    with zipfile.ZipFile(dist_zip, 'w', zipfile.ZIP_DEFLATED, allowZip64=True) as z:
+    with zipfile.ZipFile(
+      dist_zip, 'w', zipfile.ZIP_DEFLATED, allowZip64=True
+    ) as z:
      for dep in dist_files:
        if os.path.isdir(dep):
-          for root, dirs, files in os.walk(dep):
-            for file in files:
-              z.write(os.path.join(root, file))
+          for root, _, files in os.walk(dep):
+            for filename in files:
+              z.write(os.path.join(root, filename))
        else:
          basename = os.path.basename(dep)
          dirname = os.path.dirname(dep)
-          arcname = os.path.join(dirname, 'chrome-sandbox') if basename == 'chrome_sandbox' else dep
-          z.write(dep, os.path.basename(arcname) if should_flatten else arcname)
+          arcname = (
+            os.path.join(dirname, 'chrome-sandbox')
+            if basename == 'chrome_sandbox'
+            else dep
+          )
+          z.write(
+            dep,
+            os.path.basename(arcname)
+            if should_flatten
+            else arcname,
+          )

 if __name__ == '__main__':
  sys.exit(main(sys.argv[1:]))
--- a/buildflags/BUILD.gn
+++ b/buildflags/BUILD.gn
@@ -14,13 +14,13 @@ buildflag_header("buildflags") {
    "ENABLE_OSR=$enable_osr",
    "ENABLE_REMOTE_MODULE=$enable_remote_module",
    "ENABLE_VIEWS_API=$enable_views_api",
-    "ENABLE_PEPPER_FLASH=$enable_pepper_flash",
    "ENABLE_PDF_VIEWER=$enable_pdf_viewer",
    "ENABLE_TTS=$enable_tts",
    "ENABLE_COLOR_CHOOSER=$enable_color_chooser",
    "ENABLE_ELECTRON_EXTENSIONS=$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",
  ]
 }
--- a/buildflags/buildflags.gni
+++ b/buildflags/buildflags.gni
@@ -28,12 +28,12 @@ declare_args() {
  # Should not be enabled for release build.
  enable_fake_location_provider = !is_official_build

-  # Enable flash plugin support.
-  enable_pepper_flash = true
-
  # Enable Chrome extensions support.
  enable_electron_extensions = true

  # Enable Spellchecker support
  enable_builtin_spellchecker = true
+
+  # Undocumented Windows dark mode API
+  enable_win_dark_mode_window_ui = false
 }
--- a/chromium_src/BUILD.gn
+++ b/chromium_src/BUILD.gn
@@ -26,18 +26,10 @@ static_library("chrome") {
    "//chrome/browser/devtools/devtools_file_system_indexer.h",
    "//chrome/browser/extensions/global_shortcut_listener.cc",
    "//chrome/browser/extensions/global_shortcut_listener.h",
-    "//chrome/browser/extensions/global_shortcut_listener_mac.h",
-    "//chrome/browser/extensions/global_shortcut_listener_mac.mm",
-    "//chrome/browser/extensions/global_shortcut_listener_win.cc",
-    "//chrome/browser/extensions/global_shortcut_listener_win.h",
    "//chrome/browser/icon_loader.cc",
    "//chrome/browser/icon_loader.h",
-    "//chrome/browser/icon_loader_mac.mm",
-    "//chrome/browser/icon_loader_win.cc",
    "//chrome/browser/icon_manager.cc",
    "//chrome/browser/icon_manager.h",
-    "//chrome/browser/media/webrtc/system_media_capture_permissions_mac.h",
-    "//chrome/browser/media/webrtc/system_media_capture_permissions_mac.mm",
    "//chrome/browser/net/chrome_mojo_proxy_resolver_factory.cc",
    "//chrome/browser/net/chrome_mojo_proxy_resolver_factory.h",
    "//chrome/browser/net/proxy_config_monitor.cc",
@@ -57,14 +49,32 @@ static_library("chrome") {
    "//chrome/browser/ssl/tls_deprecation_config.cc",
    "//chrome/browser/ui/views/autofill/autofill_popup_view_utils.cc",
    "//chrome/browser/ui/views/autofill/autofill_popup_view_utils.h",
-    "//chrome/browser/win/chrome_process_finder.cc",
-    "//chrome/browser/win/chrome_process_finder.h",
-    "//chrome/child/v8_crashpad_support_win.cc",
-    "//chrome/child/v8_crashpad_support_win.h",
    "//extensions/browser/app_window/size_constraints.cc",
    "//extensions/browser/app_window/size_constraints.h",
  ]

+  if (is_mac) {
+    sources += [
+      "//chrome/browser/extensions/global_shortcut_listener_mac.h",
+      "//chrome/browser/extensions/global_shortcut_listener_mac.mm",
+      "//chrome/browser/icon_loader_mac.mm",
+      "//chrome/browser/media/webrtc/system_media_capture_permissions_mac.h",
+      "//chrome/browser/media/webrtc/system_media_capture_permissions_mac.mm",
+    ]
+  }
+
+  if (is_win) {
+    sources += [
+      "//chrome/browser/extensions/global_shortcut_listener_win.cc",
+      "//chrome/browser/extensions/global_shortcut_listener_win.h",
+      "//chrome/browser/icon_loader_win.cc",
+      "//chrome/browser/win/chrome_process_finder.cc",
+      "//chrome/browser/win/chrome_process_finder.h",
+      "//chrome/child/v8_crashpad_support_win.cc",
+      "//chrome/child/v8_crashpad_support_win.h",
+    ]
+  }
+
  public_deps = [
    "//chrome/common",
    "//chrome/common:version_header",
@@ -83,9 +93,18 @@ static_library("chrome") {

  if (is_linux) {
    sources += [ "//chrome/browser/icon_loader_auralinux.cc" ]
+    if (use_x11) {
+      sources += [
+        "//chrome/browser/extensions/global_shortcut_listener_x11.cc",
+        "//chrome/browser/extensions/global_shortcut_listener_x11.h",
+      ]
+    } else if (use_ozone) {
+      sources += [
+        "//chrome/browser/extensions/global_shortcut_listener_ozone.cc",
+        "//chrome/browser/extensions/global_shortcut_listener_ozone.h",
+      ]
+    }
    sources += [
-      "//chrome/browser/extensions/global_shortcut_listener_x11.cc",
-      "//chrome/browser/extensions/global_shortcut_listener_x11.h",
      "//chrome/browser/ui/views/status_icons/concat_menu_model.cc",
      "//chrome/browser/ui/views/status_icons/concat_menu_model.h",
      "//chrome/browser/ui/views/status_icons/status_icon_linux_dbus.cc",
@@ -124,10 +143,17 @@ static_library("chrome") {
      "//chrome/browser/platform_util.h",
      "//chrome/browser/ui/browser_dialogs.h",
      "//chrome/browser/ui/color_chooser.h",
+      "//chrome/browser/ui/views/eye_dropper/eye_dropper.cc",
+      "//chrome/browser/ui/views/eye_dropper/eye_dropper.h",
+      "//chrome/browser/ui/views/eye_dropper/eye_dropper_view.cc",
+      "//chrome/browser/ui/views/eye_dropper/eye_dropper_view.h",
    ]

    if (use_aura) {
-      sources += [ "//chrome/browser/platform_util_aura.cc" ]
+      sources += [
+        "//chrome/browser/platform_util_aura.cc",
+        "//chrome/browser/ui/views/eye_dropper/eye_dropper_view_aura.cc",
+      ]

      if (!is_win) {
        sources += [
@@ -144,6 +170,8 @@ static_library("chrome") {
        "//chrome/browser/media/webrtc/window_icon_util_mac.mm",
        "//chrome/browser/ui/cocoa/color_chooser_mac.h",
        "//chrome/browser/ui/cocoa/color_chooser_mac.mm",
+        "//chrome/browser/ui/views/eye_dropper/eye_dropper_view_mac.h",
+        "//chrome/browser/ui/views/eye_dropper/eye_dropper_view_mac.mm",
      ]
      deps += [
        "//components/remote_cocoa/app_shim",
@@ -189,8 +217,6 @@ static_library("chrome") {
      "//chrome/browser/printing/print_view_manager_basic.h",
      "//chrome/browser/printing/printer_query.cc",
      "//chrome/browser/printing/printer_query.h",
-      "//chrome/browser/printing/printing_message_filter.cc",
-      "//chrome/browser/printing/printing_message_filter.h",
      "//chrome/browser/printing/printing_service.cc",
      "//chrome/browser/printing/printing_service.h",
    ]
@@ -266,6 +292,17 @@ static_library("chrome") {
      ]
    }
  }
+
+  if (!is_mas_build) {
+    sources += [ "//chrome/browser/hang_monitor/hang_crash_dump.h" ]
+    if (is_mac) {
+      sources += [ "//chrome/browser/hang_monitor/hang_crash_dump_mac.cc" ]
+    } else if (is_win) {
+      sources += [ "//chrome/browser/hang_monitor/hang_crash_dump_win.cc" ]
+    } else {
+      sources += [ "//chrome/browser/hang_monitor/hang_crash_dump.cc" ]
+    }
+  }
 }

 source_set("plugins") {
@@ -277,8 +314,6 @@ source_set("plugins") {
  sources += [
    "//chrome/browser/renderer_host/pepper/chrome_browser_pepper_host_factory.cc",
    "//chrome/browser/renderer_host/pepper/chrome_browser_pepper_host_factory.h",
-    "//chrome/browser/renderer_host/pepper/pepper_broker_message_filter.cc",
-    "//chrome/browser/renderer_host/pepper/pepper_broker_message_filter.h",
    "//chrome/browser/renderer_host/pepper/pepper_isolated_file_system_message_filter.cc",
    "//chrome/browser/renderer_host/pepper/pepper_isolated_file_system_message_filter.h",
  ]
@@ -291,26 +326,6 @@ source_set("plugins") {
  if (enable_pdf_viewer) {
    deps += [ "//components/pdf/browser" ]
  }
-  if (enable_pepper_flash) {
-    sources += [
-      "//chrome/browser/renderer_host/pepper/pepper_flash_browser_host.cc",
-      "//chrome/browser/renderer_host/pepper/pepper_flash_browser_host.h",
-      "//chrome/browser/renderer_host/pepper/pepper_flash_clipboard_message_filter.cc",
-      "//chrome/browser/renderer_host/pepper/pepper_flash_clipboard_message_filter.h",
-      "//chrome/browser/renderer_host/pepper/pepper_flash_drm_host.cc",
-      "//chrome/browser/renderer_host/pepper/pepper_flash_drm_host.h",
-    ]
-    if (is_mac) {
-      sources += [
-        "//chrome/browser/renderer_host/pepper/monitor_finder_mac.h",
-        "//chrome/browser/renderer_host/pepper/monitor_finder_mac.mm",
-      ]
-      frameworks += [ "CoreGraphics.framework" ]
-    }
-    if (is_linux) {
-      deps += [ "//components/services/font/public/cpp" ]
-    }
-  }

  # renderer side
  sources += [
@@ -319,19 +334,7 @@ source_set("plugins") {
    "//chrome/renderer/pepper/pepper_shared_memory_message_filter.cc",
    "//chrome/renderer/pepper/pepper_shared_memory_message_filter.h",
  ]
-  if (enable_pepper_flash) {
-    sources += [
-      "//chrome/renderer/pepper/pepper_flash_drm_renderer_host.cc",
-      "//chrome/renderer/pepper/pepper_flash_drm_renderer_host.h",
-      "//chrome/renderer/pepper/pepper_flash_fullscreen_host.cc",
-      "//chrome/renderer/pepper/pepper_flash_fullscreen_host.h",
-      "//chrome/renderer/pepper/pepper_flash_menu_host.cc",
-      "//chrome/renderer/pepper/pepper_flash_menu_host.h",
-      "//chrome/renderer/pepper/pepper_flash_renderer_host.cc",
-      "//chrome/renderer/pepper/pepper_flash_renderer_host.h",
-    ]
-  }
-  if (enable_pepper_flash || enable_pdf_viewer) {
+  if (enable_pdf_viewer) {
    sources += [
      "//chrome/renderer/pepper/pepper_flash_font_file_host.cc",
      "//chrome/renderer/pepper/pepper_flash_font_file_host.h",
@@ -358,6 +361,7 @@ source_set("chrome_spellchecker") {
  sources = []
  deps = []
  libs = []
+  public_deps = []

  if (enable_builtin_spellchecker) {
    sources += [
@@ -375,7 +379,6 @@ source_set("chrome_spellchecker") {
      "//chrome/browser/spellchecker/spellcheck_language_policy_handler.h",
      "//chrome/browser/spellchecker/spellcheck_service.cc",
      "//chrome/browser/spellchecker/spellcheck_service.h",
-      "//chrome/common/pref_names.h",
    ]

    if (has_spellcheck_panel) {
@@ -398,9 +401,11 @@ source_set("chrome_spellchecker") {
      "//components/spellcheck:buildflags",
      "//components/sync",
    ]
+
+    public_deps += [ "//chrome/common:constants" ]
  }

-  public_deps = [
+  public_deps += [
    "//components/spellcheck/browser",
    "//components/spellcheck/common",
    "//components/spellcheck/renderer",
--- 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 */);
--- 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
--- 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);
  }
 }
--- a/docs/README.md
+++ b/docs/README.md
@@ -18,27 +18,20 @@ an issue:

 ## Guides and Tutorials

-* [Setting up the Development Environment](tutorial/development-environment.md)
-  * [Setting up macOS](tutorial/development-environment.md#setting-up-macos)
-  * [Setting up Windows](tutorial/development-environment.md#setting-up-windows)
-  * [Setting up Linux](tutorial/development-environment.md#setting-up-linux)
-  * [Choosing an Editor](tutorial/development-environment.md#a-good-editor)
-* [Creating your First App](tutorial/first-app.md)
-  * [Installing Electron](tutorial/first-app.md#installing-electron)
-  * [Electron Development in a Nutshell](tutorial/first-app.md#electron-development-in-a-nutshell)
-  * [Running Your App](tutorial/first-app.md#running-your-app)
-* [Boilerplates and CLIs](tutorial/boilerplates-and-clis.md)
-  * [Boilerplate vs CLI](tutorial/boilerplates-and-clis.md#boilerplate-vs-cli)
-  * [electron-forge](tutorial/boilerplates-and-clis.md#electron-forge)
-  * [electron-builder](tutorial/boilerplates-and-clis.md#electron-builder)
-  * [electron-react-boilerplate](tutorial/boilerplates-and-clis.md#electron-react-boilerplate)
-  * [Other Tools and Boilerplates](tutorial/boilerplates-and-clis.md#other-tools-and-boilerplates)
-* [Application Architecture](tutorial/application-architecture.md)
-  * [Main and Renderer Processes](tutorial/application-architecture.md#main-and-renderer-processes)
-  * [Using Electron's APIs](tutorial/application-architecture.md#using-electron-apis)
-  * [Using Node.js APIs](tutorial/application-architecture.md#using-nodejs-apis)
-  * [Using Native Node.js Modules](tutorial/using-native-node-modules.md)
-  * [Performance Strategies](tutorial/performance.md)
+### Quickstart
+
+* [Quick Start Guide](tutorial/quick-start.md)
+  * [Prerequisites](tutorial/quick-start.md#prerequisites)
+  * [Create a basic application](tutorial/quick-start.md#create-a-basic-application)
+  * [Run your application](tutorial/quick-start.md#run-your-application)
+  * [Package and distribute the application](tutorial/quick-start.md#package-and-distribute-the-application)
+
+### Learning the basics
+
+* [Electron's Process Model](tutorial/quick-start.md#application-architecture)
+  * [Main and Renderer Processes](tutorial/quick-start.md#main-and-renderer-processes)
+  * [Electron API](tutorial/quick-start.md#electron-api)
+  * [Node.js API](tutorial/quick-start.md#nodejs-api)
 * Adding Features to Your App
  * [Notifications](tutorial/notifications.md)
  * [Recent Documents](tutorial/recent-documents.md)
@@ -51,15 +44,26 @@ an issue:
  * [Represented File for macOS BrowserWindows](tutorial/represented-file.md)
  * [Native File Drag & Drop](tutorial/native-file-drag-drop.md)
  * [Offscreen Rendering](tutorial/offscreen-rendering.md)
-  * [Supporting macOS Dark Mode](tutorial/mojave-dark-mode-guide.md)
+  * [Dark Mode](tutorial/dark-mode.md)
  * [Web embeds in Electron](tutorial/web-embeds.md)
+* [Boilerplates and CLIs](tutorial/boilerplates-and-clis.md)
+  * [Boilerplate vs CLI](tutorial/boilerplates-and-clis.md#boilerplate-vs-cli)
+  * [electron-forge](tutorial/boilerplates-and-clis.md#electron-forge)
+  * [electron-builder](tutorial/boilerplates-and-clis.md#electron-builder)
+  * [electron-react-boilerplate](tutorial/boilerplates-and-clis.md#electron-react-boilerplate)
+  * [Other Tools and Boilerplates](tutorial/boilerplates-and-clis.md#other-tools-and-boilerplates)
+
+### Advanced steps
+
+* Application Architecture
+  * [Using Native Node.js Modules](tutorial/using-native-node-modules.md)
+  * [Performance Strategies](tutorial/performance.md)
+  * [Security Strategies](tutorial/security.md)
 * [Accessibility](tutorial/accessibility.md)
-  * [Spectron](tutorial/accessibility.md#spectron)
-  * [Devtron](tutorial/accessibility.md#devtron)
-  * [Enabling Accessibility](tutorial/accessibility.md#enabling-accessibility)
+  * [Manually Enabling Accessibility Features](tutorial/accessibility.md#manually-enabling-accessibility-features)
 * [Testing and Debugging](tutorial/application-debugging.md)
  * [Debugging the Main Process](tutorial/debugging-main-process.md)
-  * [Debugging the Main Process with Visual Studio Code](tutorial/debugging-main-process-vscode.md)
+  * [Debugging with Visual Studio Code](tutorial/debugging-vscode.md)
  * [Using Selenium and WebDriver](tutorial/using-selenium-and-webdriver.md)
  * [Testing on Headless CI Systems (Travis, Jenkins)](tutorial/testing-on-headless-ci.md)
  * [DevTools Extension](tutorial/devtools-extension.md)
@@ -70,11 +74,6 @@ an issue:
  * [Mac App Store](tutorial/mac-app-store-submission-guide.md)
  * [Windows Store](tutorial/windows-store-guide.md)
  * [Snapcraft](tutorial/snapcraft.md)
-* [Security](tutorial/security.md)
-  * [Reporting Security Issues](tutorial/security.md#reporting-security-issues)
-  * [Chromium Security Issues and Upgrades](tutorial/security.md#chromium-security-issues-and-upgrades)
-  * [Electron Security Warnings](tutorial/security.md#electron-security-warnings)
-  * [Security Checklist](tutorial/security.md#checklist-security-recommendations)
 * [Updates](tutorial/updates.md)
  * [Deploying an Update Server](tutorial/updates.md#deploying-an-update-server)
  * [Implementing Updates in Your App](tutorial/updates.md#implementing-updates-in-your-app)
@@ -98,7 +97,6 @@ These individual tutorials expand on topics discussed in the guide above.
  * [Limitations](tutorial/application-packaging.md#limitations-of-the-node-api)
  * [Adding Unpacked Files to asar Archives](tutorial/application-packaging.md#adding-unpacked-files-to-asar-archives)
 * [Testing Widevine CDM](tutorial/testing-widevine-cdm.md)
-* [Using Pepper Flash Plugin](tutorial/using-pepper-flash-plugin.md)

 ---

@@ -135,6 +133,7 @@ These individual tutorials expand on topics discussed in the guide above.
 * [MenuItem](api/menu-item.md)
 * [net](api/net.md)
 * [netLog](api/net-log.md)
+* [nativeTheme](api/native-theme.md)
 * [Notification](api/notification.md)
 * [powerMonitor](api/power-monitor.md)
 * [powerSaveBlocker](api/power-save-blocker.md)
@@ -145,9 +144,11 @@ These individual tutorials expand on topics discussed in the guide above.
 * [TouchBar](api/touch-bar.md)
 * [Tray](api/tray.md)
 * [webContents](api/web-contents.md)
+* [webFrameMain](api/web-frame-main.md)

 ### Modules for the Renderer Process (Web Page):

+* [contextBridge](api/context-bridge.md)
 * [desktopCapturer](api/desktop-capturer.md)
 * [ipcRenderer](api/ipc-renderer.md)
 * [remote](api/remote.md)
--- a/docs/api/app.md
+++ b/docs/api/app.md
@@ -32,10 +32,12 @@ In most cases, you should do everything in the `ready` event handler.

 Returns:

-* `launchInfo` unknown _macOS_
+* `event` Event
+* `launchInfo` Record<string, any> | [NotificationResponse](structures/notification-response.md) _macOS_

 Emitted once, when Electron has finished initializing. On macOS, `launchInfo`
-holds the `userInfo` of the `NSUserNotification` that was used to open the
+holds the `userInfo` of the `NSUserNotification` or information from
+[`UNNotificationResponse`](structures/notification-response.md) that was used to open the
 application, if it was launched from Notification Center. You can also call
 `app.isReady()` to check if this event has already fired and `app.whenReady()`
 to get a Promise that is fulfilled when Electron is initialized.
@@ -402,7 +404,7 @@ 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 disappears.  This is normally
@@ -428,11 +430,12 @@ 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
  * `exitCode` Number - The exit code for the process
      (e.g. status from waitpid if on posix, from GetExitCodeProcess on Windows).
-  * `name` String (optional) - The name of the process. i.e. for plugins it might be Flash.
+  * `serviceName` String (optional) - The non-localized name of the process.
+  * `name` String (optional) - The name of the process.
    Examples for utility: `Audio Service`, `Content Decryption Module Service`, `Network Service`, `Video Capture`, etc.

 Emitted when the child process unexpectedly disappears. This is normally
@@ -501,7 +504,7 @@ Returns:
 Emitted when `desktopCapturer.getSources()` is called in the renderer process of `webContents`.
 Calling `event.preventDefault()` will make it return empty sources.

-### Event: 'remote-require'
+### Event: 'remote-require' _Deprecated_

 Returns:

@@ -513,7 +516,7 @@ Emitted when `remote.require()` is called in the renderer process of `webContent
 Calling `event.preventDefault()` will prevent the module from being returned.
 Custom value can be returned by setting `event.returnValue`.

-### Event: 'remote-get-global'
+### Event: 'remote-get-global' _Deprecated_

 Returns:

@@ -525,7 +528,7 @@ Emitted when `remote.getGlobal()` is called in the renderer process of `webConte
 Calling `event.preventDefault()` will prevent the global from being returned.
 Custom value can be returned by setting `event.returnValue`.

-### Event: 'remote-get-builtin'
+### Event: 'remote-get-builtin' _Deprecated_

 Returns:

@@ -537,7 +540,7 @@ Emitted when `remote.getBuiltin()` is called in the renderer process of `webCont
 Calling `event.preventDefault()` will prevent the module from being returned.
 Custom value can be returned by setting `event.returnValue`.

-### Event: 'remote-get-current-window'
+### Event: 'remote-get-current-window' _Deprecated_

 Returns:

@@ -548,7 +551,7 @@ Emitted when `remote.getCurrentWindow()` is called in the renderer process of `w
 Calling `event.preventDefault()` will prevent the object from being returned.
 Custom value can be returned by setting `event.returnValue`.

-### Event: 'remote-get-current-web-contents'
+### Event: 'remote-get-current-web-contents' _Deprecated_

 Returns:

@@ -679,7 +682,6 @@ Returns `String` - The current application directory.
  * `videos` Directory for a user's videos.
  * `recent` Directory for the user's recent files (Windows only).
  * `logs` Directory for your app's log folder.
-  * `pepperFlashSystemPlugin` Full path to the system version of the Pepper Flash plugin.
  * `crashDumps` Directory where crash dumps are stored.

 Returns `String` - A path to a special directory or file associated with `name`. On
@@ -857,9 +859,10 @@ This method returns the application name of the default handler for the protocol
  minimum (e.g. `https://`).

 Returns `Promise<Object>` - Resolve with an object containing the following:
-  * `icon` NativeImage - the display icon of the app handling the protocol.
-  * `path` String  - installation path of the app handling the protocol.
-  * `name` String - display name of the app handling the protocol.
+
+* `icon` NativeImage - the display icon of the app handling the protocol.
+* `path` String  - installation path of the app handling the protocol.
+* `name` String - display name of the app handling the protocol.

 This method returns a promise that contains the application name, icon and path of the default handler for the protocol
 (aka URI scheme) of a URL.
@@ -1089,6 +1092,7 @@ Changes the [Application User Model ID][app-user-model-id] to `id`.
 Sets the activation policy for a given app.

 Activation policy types:
+
 * 'regular' - The application is an ordinary app that appears in the Dock and may have a user interface.
 * 'accessory' - The application doesn’t appear in the Dock and doesn’t have a menu bar, but it may be activated programmatically or by clicking on one of its windows.
 * 'prohibited' - The application doesn’t appear in the Dock and may not create windows or be activated.
@@ -1103,7 +1107,7 @@ Activation policy types:

 Imports the certificate in pkcs12 format into the platform certificate store.
 `callback` is called with the `result` of import operation, a value of `0`
-indicates success while any other value indicates failure according to Chromium [net_error_list](https://code.google.com/p/chromium/codesearch#chromium/src/net/base/net_error_list.h).
+indicates success while any other value indicates failure according to Chromium [net_error_list](https://source.chromium.org/chromium/chromium/src/+/master:net/base/net_error_list.h).

 ### `app.disableHardwareAcceleration()`

@@ -1140,6 +1144,7 @@ For `infoType` equal to `complete`:

 For `infoType` equal to `basic`:
  Promise is fulfilled with `Object` containing fewer attributes than when requested with `complete`. Here's an example of basic response:
+
 ```js
 {
  auxAttributes:
@@ -1169,9 +1174,9 @@ For `infoType` equal to `basic`:

 Using `basic` should be preferred if only basic information like `vendorId` or `driverId` is needed.

-### `app.setBadgeCount(count)` _Linux_ _macOS_
+### `app.setBadgeCount([count])` _Linux_ _macOS_

-* `count` Integer
+* `count` Integer (optional) - If a value is provided, set the badge to the provided value otherwise, on macOS, display a plain white dot (e.g. unknown number of notifications). On Linux, if a value is not provided the badge will not display.

 Returns `Boolean` - Whether the call succeeded.

@@ -1340,7 +1345,7 @@ 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
@@ -1484,3 +1489,12 @@ which native modules you can use in the renderer process.  For more information
 on the direction Electron is going with renderer process restarts and usage of
 native modules in the renderer process please check out this
 [Tracking Issue](https://github.com/electron/electron/issues/18397).
+
+### `app.runningUnderRosettaTranslation` _macOS_ _Readonly_
+
+A `Boolean` which when `true` indicates that the app is currently running
+under the [Rosetta Translator Environment](https://en.wikipedia.org/wiki/Rosetta_(software)).
+
+You can use this property to prompt users to download the arm64 version of
+your application when they are running the x64 version under Rosetta
+incorrectly.
--- a/docs/api/browser-window.md
+++ b/docs/api/browser-window.md
@@ -8,9 +8,6 @@ Process: [Main](../glossary.md#main-process)
 // In the main process.
 const { BrowserWindow } = require('electron')

-// Or use `remote` from the renderer process.
-// const { BrowserWindow } = require('electron').remote
-
 const win = new BrowserWindow({ width: 800, height: 600 })

 // Load a remote URL
@@ -340,18 +337,17 @@ It creates a new `BrowserWindow` with native properties as set by the `options`.
      more details.
    * `contextIsolation` Boolean (optional) - Whether to run Electron APIs and
      the specified `preload` script in a separate JavaScript context. Defaults
-      to `false`. The context that the `preload` script runs in will still
-      have full access to the `document` and `window` globals but it will use
-      its own set of JavaScript builtins (`Array`, `Object`, `JSON`, etc.)
-      and will be isolated from any changes made to the global environment
-      by the loaded page. The Electron API will only be available in the
-      `preload` script and not the loaded page. This option should be used when
-      loading potentially untrusted remote content to ensure the loaded content
-      cannot tamper with the `preload` script and any Electron APIs being used.
-      This option uses the same technique used by [Chrome Content Scripts][chrome-content-scripts].
-      You can access this context in the dev tools by selecting the
-      'Electron Isolated Context' entry in the combo box at the top of the
-      Console tab.
+      to `false`. The context that the `preload` script runs in will only have
+      access to its own dedicated `document` and `window` globals, as well as
+      its own set of JavaScript builtins (`Array`, `Object`, `JSON`, etc.),
+      which are all invisible to the loaded content. The Electron API will only
+      be available in the `preload` script and not the loaded page. This option
+      should be used when loading potentially untrusted remote content to ensure
+      the loaded content cannot tamper with the `preload` script and any
+      Electron APIs being used.  This option uses the same technique used by
+      [Chrome Content Scripts][chrome-content-scripts].  You can access this
+      context in the dev tools by selecting the 'Electron Isolated Context'
+      entry in the combo box at the top of the Console tab.
    * `worldSafeExecuteJavaScript` Boolean (optional) - If true, values returned from `webFrame.executeJavaScript` will be sanitized to ensure JS values
      can't unsafely cross between worlds when using `contextIsolation`.  The default
      is `false`. In Electron 12, the default will be changed to `true`. _Deprecated_
@@ -401,6 +397,11 @@ It creates a new `BrowserWindow` with native properties as set by the `options`.
      * `bypassHeatCheck` - Bypass code caching heuristics but with lazy compilation
      * `bypassHeatCheckAndEagerCompile` - Same as above except compilation is eager.
      Default policy is `code`.
+    * `enablePreferredSizeMode` Boolean (optional) - Whether to enable
+      preferred size mode. The preferred size is the minimum size needed to
+      contain the layout of the document—without requiring scrolling. Enabling
+      this will cause the `preferred-size-changed` event to be emitted on the
+      `WebContents` when the preferred size changes. Default is `false`.

 When setting minimum or maximum window size with `minWidth`/`maxWidth`/
 `minHeight`/`maxHeight`, it only constrains the users. It won't prevent you from
@@ -466,6 +467,7 @@ window.onbeforeunload = (e) => {
  e.returnValue = false // equivalent to `return false` but not recommended
 }
 ```
+
 _**Note**: There is a subtle difference between the behaviors of `window.onbeforeunload = handler` and `window.addEventListener('beforeunload', handler)`. It is recommended to always set the `event.returnValue` explicitly, instead of only returning a value, as the former works more consistently within Electron._

 #### Event: 'closed'
@@ -541,6 +543,12 @@ Note that this is only emitted when the window is being resized manually. Resizi

 Emitted after the window has been resized.

+#### Event: 'resized' _macOS_ _Windows_
+
+Emitted once when the window has finished being resized.
+
+This is usually emitted when the window has been resized manually. On macOS, resizing the window with `setBounds`/`setSize` and setting the `animate` parameter to `true` will also emit this event once resizing has finished.
+
 #### Event: 'will-move' _macOS_ _Windows_

 Returns:
@@ -556,12 +564,12 @@ Note that this is only emitted when the window is being resized manually. Resizi

 Emitted when the window is being moved to a new position.

-__Note__: On macOS this event is an alias of `moved`.
-
-#### Event: 'moved' _macOS_
+#### Event: 'moved' _macOS_ _Windows_

 Emitted once when the window is moved to a new position.

+__Note__: On macOS this event is an alias of `move`.
+
 #### Event: 'enter-full-screen'

 Emitted when the window enters a full-screen state.
@@ -670,6 +678,20 @@ Emitted when the window has closed a sheet.

 Emitted when the native new tab button is clicked.

+#### Event: 'system-context-menu' _Windows_
+
+Returns:
+
+* `event` Event
+* `point` [Point](structures/point.md) - The screen coordinates the context menu was triggered at
+
+Emitted when the system context menu is triggered on the window, this is
+normally only triggered when the user right clicks on the non-client area
+of your window.  This is the window titlebar or any area you have declared
+as `-webkit-app-region: drag` in a frameless window.
+
+Calling `event.preventDefault()` will prevent the menu from being displayed.
+
 ### Static Methods

 The `BrowserWindow` class has the following static methods:
@@ -843,7 +865,7 @@ A `Boolean` property that determines whether the menu bar should be visible.

 **Note:** If the menu bar is auto-hide, users can still bring up the menu bar by pressing the single `Alt` key.

-####  `win.kiosk`
+#### `win.kiosk`

 A `Boolean` property that determines whether the window is in kiosk mode.

@@ -1029,11 +1051,11 @@ Returns `Boolean` - Whether the window is in simple (pre-Lion) fullscreen mode.

 Returns `Boolean` - Whether the window is in normal state (not maximized, not minimized, not in fullscreen mode).

-#### `win.setAspectRatio(aspectRatio[, extraSize])` _macOS_ _Linux_
+#### `win.setAspectRatio(aspectRatio[, extraSize])`

 * `aspectRatio` Float - The aspect ratio to maintain for some portion of the
 content view.
- * `extraSize` [Size](structures/size.md) (optional) _macOS_ - The extra size not to be included while
+* `extraSize` [Size](structures/size.md) (optional) _macOS_ - The extra size not to be included while
 maintaining the aspect ratio.

 This will make a window maintain an aspect ratio. The extra size allows a
@@ -1050,6 +1072,9 @@ the player itself we would call this function with arguments of 16/9 and
 are within the content view--only that they exist. Sum any extra width and
 height areas you have within the overall content view.

+The aspect ratio is not respected when window is resized programmingly with
+APIs like `win.setSize`.
+
 #### `win.setBackgroundColor(backgroundColor)`

 * `backgroundColor` String - Window's background color as a hexadecimal value,
@@ -1349,6 +1374,17 @@ Enters or leaves kiosk mode.

 Returns `Boolean` - Whether the window is in kiosk mode.

+#### `win.isTabletMode()` _Windows_
+
+Returns `Boolean` - Whether the window is in Windows 10 tablet mode.
+
+Since Windows 10 users can [use their PC as tablet](https://support.microsoft.com/en-us/help/17210/windows-10-use-your-pc-like-a-tablet),
+under this mode apps can choose to optimize their UI for tablets, such as
+enlarging the titlebar and hiding titlebar buttons.
+
+This API returns whether the window is in tablet mode, and the `resize` event
+can be be used to listen to changes to tablet mode.
+
 #### `win.getMediaSourceId()`

 Returns `String` - Window id in the format of DesktopCapturerSource's id. For example "window:1234:0".
@@ -1430,7 +1466,7 @@ Captures a snapshot of the page within `rect`. Omitting `rect` will capture the
  * `httpReferrer` (String | [Referrer](structures/referrer.md)) (optional) - An HTTP Referrer URL.
  * `userAgent` String (optional) - A user agent originating the request.
  * `extraHeaders` String (optional) - Extra headers separated by "\n"
-  * `postData` ([UploadRawData[]](structures/upload-raw-data.md) | [UploadFile[]](structures/upload-file.md) | [UploadBlob[]](structures/upload-blob.md)) (optional)
+  * `postData` ([UploadRawData[]](structures/upload-raw-data.md) | [UploadFile[]](structures/upload-file.md)) (optional)
  * `baseURLForDataURL` String (optional) - Base URL (with trailing path separator) for files to be loaded by the data URL. This is needed only if the specified `url` is a data URL and needs to load other files.

 Returns `Promise<void>` - the promise will resolve when the page has finished loading
@@ -1712,7 +1748,9 @@ events.
 Prevents the window contents from being captured by other apps.

 On macOS it sets the NSWindow's sharingType to NSWindowSharingNone.
-On Windows it calls SetWindowDisplayAffinity with `WDA_MONITOR`.
+On Windows it calls SetWindowDisplayAffinity with `WDA_EXCLUDEFROMCAPTURE`.
+For Windows 10 version 2004 and up the window will be removed from capture entirely,
+older Windows versions behave as if `WDA_MONITOR` is applied capturing a black window.

 #### `win.setFocusable(focusable)` _macOS_ _Windows_

--- a/docs/api/client-request.md
+++ b/docs/api/client-request.md
@@ -13,30 +13,41 @@ interface and is therefore an [EventEmitter][event-emitter].
 the request URL. If it is an object, it is expected to fully specify an HTTP request via the
 following properties:
  * `method` String (optional) - The HTTP request method. Defaults to the GET
-method.
+    method.
  * `url` String (optional) - The request URL. Must be provided in the absolute
-form with the protocol scheme specified as http or https.
+    form with the protocol scheme specified as http or https.
  * `session` Session (optional) - The [`Session`](session.md) instance with
-which the request is associated.
+    which the request is associated.
  * `partition` String (optional) - The name of the [`partition`](session.md)
-  with which the request is associated. Defaults to the empty string. The
-`session` option prevails on `partition`. Thus if a `session` is explicitly
-specified, `partition` is ignored.
+    with which the request is associated. Defaults to the empty string. The
+    `session` option supersedes `partition`. Thus if a `session` is explicitly
+    specified, `partition` is ignored.
+  * `credentials` String (optional) - Can be `include` or `omit`. Whether to
+    send [credentials](https://fetch.spec.whatwg.org/#credentials) with this
+    request. If set to `include`, credentials from the session associated with
+    the request will be used. If set to `omit`, credentials will not be sent
+    with the request (and the `'login'` event will not be triggered in the
+    event of a 401). This matches the behavior of the
+    [fetch](https://fetch.spec.whatwg.org/#concept-request-credentials-mode)
+    option of the same name. If this option is not specified, authentication
+    data from the session will be sent, and cookies will not be sent (unless
+    `useSessionCookies` is set).
  * `useSessionCookies` Boolean (optional) - Whether to send cookies with this
-    request from the provided session.  This will make the `net` request's
-    cookie behavior match a `fetch` request. Default is `false`.
-  * `protocol` String (optional) - The protocol scheme in the form 'scheme:'.
-Currently supported values are 'http:' or 'https:'. Defaults to 'http:'.
+    request from the provided session. If `credentials` is specified, this
+    option has no effect. Default is `false`.
+  * `protocol` String (optional) - Can be `http:` or `https:`. The protocol
+    scheme in the form 'scheme:'. Defaults to 'http:'.
  * `host` String (optional) - The server host provided as a concatenation of
-the hostname and the port number 'hostname:port'.
+    the hostname and the port number 'hostname:port'.
  * `hostname` String (optional) - The server host name.
  * `port` Integer (optional) - The server's listening port number.
  * `path` String (optional) - The path part of the request URL.
-  * `redirect` String (optional) - The redirect mode for this request. Should be
-one of `follow`, `error` or `manual`. Defaults to `follow`. When mode is `error`,
-any redirection will be aborted. When mode is `manual` the redirection will be
-cancelled unless [`request.followRedirect`](#requestfollowredirect) is invoked
-synchronously during the [`redirect`](#event-redirect) event.
+  * `redirect` String (optional) - Can be `follow`, `error` or `manual`. The
+    redirect mode for this request. When mode is `error`, any redirection will
+    be aborted. When mode is `manual` the redirection will be cancelled unless
+    [`request.followRedirect`](#requestfollowredirect) is invoked synchronously
+    during the [`redirect`](#event-redirect) event.  Defaults to `follow`.
+  * `origin` String (optional) - The origin URL of the request.

 `options` properties such as `protocol`, `host`, `hostname`, `port` and `path`
 strictly follow the Node.js model as described in the
@@ -88,6 +99,7 @@ request.on('login', (authInfo, callback) => {
  callback('username', 'password')
 })
 ```
+
 Providing empty credentials will cancel the request and report an authentication
 error on the response object:

@@ -129,7 +141,6 @@ Emitted as the last event in the HTTP request-response transaction. The `close`
 event indicates that no more events will be emitted on either the `request` or
 `response` objects.

-
 #### Event: 'redirect'

 Returns:
--- a/docs/api/command-line-switches.md
+++ b/docs/api/command-line-switches.md
@@ -64,6 +64,7 @@ Forces the maximum disk space to be used by the disk cache, in bytes.
 ### --enable-api-filtering-logging

 Enables caller stack logging for the following APIs (filtering events):
+
 - `desktopCapturer.getSources()` / `desktop-capturer-get-sources`
 - `remote.require()` / `remote-require`
 - `remote.getGlobal()` / `remote-get-builtin`
@@ -171,14 +172,6 @@ authentication [per Chromium issue](https://bugs.chromium.org/p/chromium/issues/

 Enables remote debugging over HTTP on the specified `port`.

-### --ppapi-flash-path=`path`
-
-Sets the `path` of the pepper flash plugin.
-
-### --ppapi-flash-version=`version`
-
-Sets the `version` of the pepper flash plugin.
-
 ### --v=`log_level`

 Gives the default maximal active V-logging level; 0 is the default. Normally
@@ -198,6 +191,14 @@ 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.
@@ -227,12 +228,13 @@ See the [Debugging the Main Process][debugging-main-process] guide for more deta
 Aliased to `--debug[=[host:]port`.

 ### --inspect-publish-uid=stderr,http
+
 Specify ways of the inspector web socket url exposure.

 By default inspector websocket url is available in stderr and under /json/list endpoint on http://host:port/json/list.

 [app]: app.md
-[append-switch]: app.md#appcommandlineappendswitchswitch-value
+[append-switch]: command-line.md#commandlineappendswitchswitch-value
 [ready]: app.md#event-ready
 [play-silent-audio]: https://github.com/atom/atom/pull/9485/files
 [debugging-main-process]: ../tutorial/debugging-main-process.md
--- a/docs/api/content-tracing.md
+++ b/docs/api/content-tracing.md
@@ -16,7 +16,7 @@ const { app, contentTracing } = require('electron')
 app.whenReady().then(() => {
  (async () => {
    await contentTracing.startRecording({
-      include_categories: ['*']
+      included_categories: ['*']
    })
    console.log('Tracing started')
    await new Promise(resolve => setTimeout(resolve, 5000))
--- a/docs/api/context-bridge.md
+++ b/docs/api/context-bridge.md
@@ -44,19 +44,19 @@ The `contextBridge` module has the following methods:
 ### `contextBridge.exposeInMainWorld(apiKey, api)` _Experimental_

 * `apiKey` String - The key to inject the API onto `window` with.  The API will be accessible on `window[apiKey]`.
-* `api` Record<String, any> - Your API object, more information on what this API can be and how it works is available below.
+* `api` any - Your API, more information on what this API can be and how it works is available below.

 ## Usage

-### API Objects
+### API

-The `api` object provided to [`exposeInMainWorld`](#contextbridgeexposeinmainworldapikey-api-experimental) must be an object
+The `api` provided to [`exposeInMainWorld`](#contextbridgeexposeinmainworldapikey-api-experimental) must be a `Function`, `String`, `Number`, `Array`, `Boolean`, or an object
 whose keys are strings and values are a `Function`, `String`, `Number`, `Array`, `Boolean`, or another nested object that meets the same conditions.

 `Function` values are proxied to the other context and all other values are **copied** and **frozen**. Any data / primitives sent in
-the API object become immutable and updates on either side of the bridge do not result in an update on the other side.
+the API become immutable and updates on either side of the bridge do not result in an update on the other side.

-An example of a complex API object is shown below:
+An example of a complex API is shown below:

 ```javascript
 const { contextBridge } = require('electron')
@@ -108,5 +108,4 @@ has been included below for completeness:
 | [Cloneable Types](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Structured_clone_algorithm) | Simple | ✅ | ✅ | See the linked document on cloneable types |
 | `Symbol` | N/A | ❌ | ❌ | Symbols cannot be copied across contexts so they are dropped |

-
 If the type you care about is not in the above table, it is probably not supported.
--- a/docs/api/crash-reporter.md
+++ b/docs/api/crash-reporter.md
@@ -39,6 +39,37 @@ is an implementation detail driven by Chromium, and it may change in future. In
 particular, crashpad is newer and will likely eventually replace breakpad on
 all platforms.

+### Note about Node child processes on Linux
+
+If you are using the Node.js `child_process` module and want to report crashes
+from those processes on Linux, there is an extra step you will need to take to
+properly initialize the crash reporter in the child process. This is not
+necessary on Mac or Windows, as those platforms use Crashpad, which
+automatically monitors child processes.
+
+Since `require('electron')` is not available in Node child processes, the
+following APIs are available on the `process` object in Node child processes.
+Note that, on Linux, each Node child process has its own separate instance of
+the breakpad crash reporter. This is dissimilar to renderer child processes,
+which have a "stub" breakpad reporter which returns information to the main
+process for reporting.
+
+#### `process.crashReporter.start(options)`
+
+See [`crashReporter.start()`](#crashreporterstartoptions).
+
+#### `process.crashReporter.getParameters()`
+
+See [`crashReporter.getParameters()`](#crashreportergetparameters).
+
+#### `process.crashReporter.addExtraParameter(key, value)`
+
+See [`crashReporter.addExtraParameter(key, value)`](#crashreporteraddextraparameterkey-value).
+
+#### `process.crashReporter.removeExtraParameter(key)`
+
+See [`crashReporter.removeExtraParameter(key)`](#crashreporterremoveextraparameterkey).
+
 ## Methods

 The `crashReporter` module has the following methods:
@@ -59,7 +90,7 @@ The `crashReporter` module has the following methods:
  * `rateLimit` Boolean (optional) _macOS_ _Windows_ - If true, limit the
    number of crashes uploaded to 1/hour. Default is `false`.
  * `compress` Boolean (optional) - If true, crash reports will be compressed
-    and uploaded with `Content-Encoding: gzip`. Default is `false`.
+    and uploaded with `Content-Encoding: gzip`. Default is `true`.
  * `extra` Record<String, String> (optional) - Extra string key/value
    annotations that will be sent along with crash reports that are generated
    in the main process. Only string values are supported. Crashes generated in
@@ -97,7 +128,7 @@ must be at most 39 bytes long, and values must be no longer than 127 bytes.
 Keys with names longer than the maximum will be silently ignored. Key values
 longer than the maximum length will be truncated.

-**Note:** Calling this method from the renderer process is deprecated.
+**Note:** This method is only available in the main process.

 ### `crashReporter.getLastCrashReport()`

@@ -106,7 +137,7 @@ last crash report. Only crash reports that have been uploaded will be returned;
 even if a crash report is present on disk it will not be returned until it is
 uploaded. In the case that there are no uploaded reports, `null` is returned.

-**Note:** Calling this method from the renderer process is deprecated.
+**Note:** This method is only available in the main process.

 ### `crashReporter.getUploadedReports()`

@@ -115,14 +146,14 @@ Returns [`CrashReport[]`](structures/crash-report.md):
 Returns all uploaded crash reports. Each report contains the date and uploaded
 ID.

-**Note:** Calling this method from the renderer process is deprecated.
+**Note:** This method is only available in the main process.

 ### `crashReporter.getUploadToServer()`

 Returns `Boolean` - Whether reports should be submitted to the server. Set through
 the `start` method or `setUploadToServer`.

-**Note:** Calling this method from the renderer process is deprecated.
+**Note:** This method is only available in the main process.

 ### `crashReporter.setUploadToServer(uploadToServer)`

@@ -131,13 +162,7 @@ the `start` method or `setUploadToServer`.
 This would normally be controlled by user preferences. This has no effect if
 called before `start` is called.

-**Note:** Calling this method from the renderer process is deprecated.
-
-### `crashReporter.getCrashesDirectory()` _Deprecated_
-
-Returns `String` - The directory where crashes are temporarily stored before being uploaded.
-
-**Note:** This method is deprecated, use `app.getPath('crashDumps')` instead.
+**Note:** This method is only available in the main process.

 ### `crashReporter.addExtraParameter(key, value)`

--- a/docs/api/desktop-capturer.md
+++ b/docs/api/desktop-capturer.md
@@ -72,50 +72,6 @@ const constraints = {
 }
 ```

-This example shows how to capture a video from a [WebContents](web-contents.md)
-
-```javascript
-// In the renderer process.
-const { desktopCapturer, remote } = require('electron')
-
-desktopCapturer.getMediaSourceIdForWebContents(remote.getCurrentWebContents().id).then(async mediaSourceId => {
-  try {
-    const stream = await navigator.mediaDevices.getUserMedia({
-      audio: {
-        mandatory: {
-          chromeMediaSource: 'tab',
-          chromeMediaSourceId: mediaSourceId
-        }
-      },
-      video: {
-        mandatory: {
-          chromeMediaSource: 'tab',
-          chromeMediaSourceId: mediaSourceId,
-          minWidth: 1280,
-          maxWidth: 1280,
-          minHeight: 720,
-          maxHeight: 720
-        }
-      }
-    })
-    handleStream(stream)
-  } catch (e) {
-    handleError(e)
-  }
-})
-
-function handleStream (stream) {
-  const video = document.querySelector('video')
-  video.srcObject = stream
-  video.onloadedmetadata = (e) => video.play()
-}
-
-function handleError (e) {
-  console.log(e)
-}
-```
-
-
 ## Methods

 The `desktopCapturer` module has the following methods:
@@ -138,17 +94,8 @@ Returns `Promise<DesktopCapturerSource[]>` - Resolves with an array of [`Desktop
 **Note** Capturing the screen contents requires user consent on macOS 10.15 Catalina or higher,
 which can detected by [`systemPreferences.getMediaAccessStatus`].

-### `desktopCapturer.getMediaSourceIdForWebContents(webContentsId)`
-
-* `webContentsId` number - Id of the WebContents to get stream of
-
-Returns `Promise<string>` - Resolves with the identifier of a WebContents stream, this identifier can be
-used with [`navigator.mediaDevices.getUserMedia`].
-The identifier is **only valid for 10 seconds**.
-The identifier may be empty if not requested from a renderer process.
-
 [`navigator.mediaDevices.getUserMedia`]: https://developer.mozilla.org/en/docs/Web/API/MediaDevices/getUserMedia
-[`systemPreferences.getMediaAccessStatus`]: system-preferences.md#systempreferencesgetmediaaccessstatusmediatype-macos
+[`systemPreferences.getMediaAccessStatus`]: system-preferences.md#systempreferencesgetmediaaccessstatusmediatype-windows-macos

 ## Caveats

--- a/docs/api/dialog.md
+++ b/docs/api/dialog.md
@@ -11,14 +11,6 @@ const { dialog } = require('electron')
 console.log(dialog.showOpenDialog({ properties: ['openFile', 'multiSelections'] }))
 ```

-The Dialog is opened from Electron's main thread. If you want to use the dialog
-object from a renderer process, remember to access it using the remote:
-
-```javascript
-const { dialog } = require('electron').remote
-console.log(dialog)
-```
-
 ## Methods

 The `dialog` module has the following methods:
@@ -213,9 +205,10 @@ The `filters` specifies an array of file types that can be displayed, see
  * `securityScopedBookmarks` Boolean (optional) _macOS_ _mas_ - Create a [security scoped bookmark](https://developer.apple.com/library/content/documentation/Security/Conceptual/AppSandboxDesignGuide/AppSandboxInDepth/AppSandboxInDepth.html#//apple_ref/doc/uid/TP40011183-CH3-SW16) when packaged for the Mac App Store. If this option is enabled and the file doesn't already exist a blank file will be created at the chosen path.

 Returns `Promise<Object>` - Resolve with an object containing the following:
-  * `canceled` Boolean - whether or not the dialog was canceled.
-  * `filePath` String (optional) - If the dialog is canceled, this will be `undefined`.
-  * `bookmark` String (optional) _macOS_ _mas_ - Base64 encoded string which contains the security scoped bookmark data for the saved file. `securityScopedBookmarks` must be enabled for this to be present. (For return values, see [table here](#bookmarks-array).)
+
+* `canceled` Boolean - whether or not the dialog was canceled.
+* `filePath` String (optional) - If the dialog is canceled, this will be `undefined`.
+* `bookmark` String (optional) _macOS_ _mas_ - Base64 encoded string which contains the security scoped bookmark data for the saved file. `securityScopedBookmarks` must be enabled for this to be present. (For return values, see [table here](#bookmarks-array).)

 The `browserWindow` argument allows the dialog to attach itself to a parent window, making it modal.

@@ -229,6 +222,7 @@ expanding and collapsing the dialog.

 * `browserWindow` [BrowserWindow](browser-window.md) (optional)
 * `options` Object
+  * `message` String - Content of the message box.
  * `type` String (optional) - Can be `"none"`, `"info"`, `"error"`, `"question"` or
  `"warning"`. On Windows, `"question"` displays the same icon as `"info"`, unless
  you set an icon using the `"icon"` option. On macOS, both `"warning"` and
@@ -238,7 +232,6 @@ expanding and collapsing the dialog.
  * `defaultId` Integer (optional) - Index of the button in the buttons array which will
    be selected by default when the message box opens.
  * `title` String (optional) - Title of the message box, some platforms will not show it.
-  * `message` String - Content of the message box.
  * `detail` String (optional) - Extra information of the message.
  * `checkboxLabel` String (optional) - If provided, the message box will
    include a checkbox with the given label.
@@ -275,6 +268,7 @@ If `browserWindow` is not shown dialog will not be attached to it. In such case

 * `browserWindow` [BrowserWindow](browser-window.md) (optional)
 * `options` Object
+  * `message` String - Content of the message box.
  * `type` String (optional) - Can be `"none"`, `"info"`, `"error"`, `"question"` or
  `"warning"`. On Windows, `"question"` displays the same icon as `"info"`, unless
  you set an icon using the `"icon"` option. On macOS, both `"warning"` and
@@ -284,7 +278,6 @@ If `browserWindow` is not shown dialog will not be attached to it. In such case
  * `defaultId` Integer (optional) - Index of the button in the buttons array which will
    be selected by default when the message box opens.
  * `title` String (optional) - Title of the message box, some platforms will not show it.
-  * `message` String - Content of the message box.
  * `detail` String (optional) - Extra information of the message.
  * `checkboxLabel` String (optional) - If provided, the message box will
    include a checkbox with the given label.
@@ -310,11 +303,12 @@ If `browserWindow` is not shown dialog will not be attached to it. In such case
    via `Alt-W` on Windows and Linux.

 Returns `Promise<Object>` - resolves with a promise containing the following properties:
-  * `response` Number - The index of the clicked button.
-  * `checkboxChecked` Boolean - The checked state of the checkbox if
+
+* `response` Number - The index of the clicked button.
+* `checkboxChecked` Boolean - The checked state of the checkbox if
  `checkboxLabel` was set. Otherwise `false`.

-Shows a message box, it will block the process until the message box is closed.
+Shows a message box.

 The `browserWindow` argument allows the dialog to attach itself to a parent window, making it modal.

--- a/docs/api/download-item.md
+++ b/docs/api/download-item.md
@@ -79,6 +79,7 @@ The `downloadItem` object has the following methods:
 * `path` String - Set the save file path of the download item.

 The API is only available in session's `will-download` callback function.
+If `path` doesn't exist, Electron will try to make the directory recursively.
 If user doesn't set the save path via the API, Electron will use the original
 routine to determine the save path; this usually prompts a save dialog.

--- a/docs/api/environment-variables.md
+++ b/docs/api/environment-variables.md
@@ -105,6 +105,7 @@ Don't use the global menu bar on Linux.
 Set the trash implementation on Linux. Default is `gio`.

 Options:
+
 * `gvfs-trash`
 * `trash-cli`
 * `kioclient5`
@@ -115,7 +116,6 @@ Options:
 The following environment variables are intended primarily for development and
 debugging purposes.

-
 ### `ELECTRON_ENABLE_LOGGING`

 Prints Chrome's internal logging to the console.
--- a/docs/api/extensions.md
+++ b/docs/api/extensions.md
@@ -74,6 +74,7 @@ The following methods of `chrome.runtime` are supported:

 - `chrome.runtime.getBackgroundPage`
 - `chrome.runtime.getManifest`
+- `chrome.runtime.getPlatformInfo`
 - `chrome.runtime.getURL`
 - `chrome.runtime.connect`
 - `chrome.runtime.sendMessage`
@@ -102,3 +103,21 @@ 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.
--- a/docs/api/frameless-window.md
+++ b/docs/api/frameless-window.md
@@ -12,7 +12,6 @@ options on the [`BrowserWindow`](browser-window.md) class.
 To create a frameless window, you need to set `frame` to `false` in
 [BrowserWindow](browser-window.md)'s `options`:

-
 ```javascript
 const { BrowserWindow } = require('electron')
 const win = new BrowserWindow({ width: 800, height: 600, frame: false })
@@ -88,7 +87,7 @@ win.show()
 * On Linux, users have to put `--enable-transparent-visuals --disable-gpu` in
  the command line to disable GPU and allow ARGB to make transparent window,
  this is caused by an upstream bug that [alpha channel doesn't work on some
-  NVidia drivers](https://code.google.com/p/chromium/issues/detail?id=369209) on
+  NVidia drivers](https://bugs.chromium.org/p/chromium/issues/detail?id=369209) on
  Linux.
 * On Mac, the native window shadow will not be shown on a transparent window.

@@ -112,13 +111,19 @@ optional parameter can be used to forward mouse move messages to the web page,
 allowing events such as `mouseleave` to be emitted:

 ```javascript
-const win = require('electron').remote.getCurrentWindow()
+const { ipcRenderer } = require('electron')
 const el = document.getElementById('clickThroughElement')
 el.addEventListener('mouseenter', () => {
-  win.setIgnoreMouseEvents(true, { forward: true })
+  ipcRenderer.send('set-ignore-mouse-events', true, { forward: true })
 })
 el.addEventListener('mouseleave', () => {
-  win.setIgnoreMouseEvents(false)
+  ipcRenderer.send('set-ignore-mouse-events', false)
+})
+
+// Main process
+const { ipcMain } = require('electron')
+ipcMain.on('set-ignore-mouse-events', (event, ...args) => {
+  BrowserWindow.fromWebContents(event.sender).setIgnoreMouseEvents(...args)
 })
 ```

--- 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
--- a/docs/api/incoming-message.md
+++ b/docs/api/incoming-message.md
@@ -20,7 +20,7 @@ applicative code.

 #### Event: 'end'

-Indicates that response body has ended.
+Indicates that response body has ended. Must be placed before 'data' event.

 #### Event: 'aborted'

--- 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[]

--- 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.
@@ -85,14 +89,19 @@ 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).

 For example:
+
 ```javascript
 // Renderer process
 ipcRenderer.invoke('some-name', someArgument).then((result) => {
@@ -123,9 +132,13 @@ 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`.
@@ -149,6 +162,7 @@ The transferred `MessagePort` objects will be available in the main process as
 property of the emitted event.

 For example:
+
 ```js
 // Renderer process
 const { port1, port2 } = new MessageChannel()
--- a/docs/api/menu-item.md
+++ b/docs/api/menu-item.md
@@ -14,7 +14,7 @@ See [`Menu`](menu.md) for examples.
    * `menuItem` MenuItem
    * `browserWindow` [BrowserWindow](browser-window.md) | undefined - This will not be defined if no window is open.
    * `event` [KeyboardEvent](structures/keyboard-event.md)
-  * `role` String (optional) - Can be `undo`, `redo`, `cut`, `copy`, `paste`, `pasteAndMatchStyle`, `delete`, `selectAll`, `reload`, `forceReload`, `toggleDevTools`, `resetZoom`, `zoomIn`, `zoomOut`, `togglefullscreen`, `window`, `minimize`, `close`, `help`, `about`, `services`, `hide`, `hideOthers`, `unhide`, `quit`, `startSpeaking`, `stopSpeaking`, `zoom`, `front`, `appMenu`, `fileMenu`, `editMenu`, `viewMenu`, `recentDocuments`, `toggleTabBar`, `selectNextTab`, `selectPreviousTab`, `mergeAllWindows`, `clearRecentDocuments`, `moveTabToNewWindow` or `windowMenu` - Define the action of the menu item, when specified the
+  * `role` String (optional) - Can be `undo`, `redo`, `cut`, `copy`, `paste`, `pasteAndMatchStyle`, `delete`, `selectAll`, `reload`, `forceReload`, `toggleDevTools`, `resetZoom`, `zoomIn`, `zoomOut`, `togglefullscreen`, `window`, `minimize`, `close`, `help`, `about`, `services`, `hide`, `hideOthers`, `unhide`, `quit`, `startSpeaking`, `stopSpeaking`, `zoom`, `front`, `appMenu`, `fileMenu`, `editMenu`, `viewMenu`, `shareMenu`, `recentDocuments`, `toggleTabBar`, `selectNextTab`, `selectPreviousTab`, `mergeAllWindows`, `clearRecentDocuments`, `moveTabToNewWindow` or `windowMenu` - Define the action of the menu item, when specified the
    `click` property will be ignored. See [roles](#roles).
  * `type` String (optional) - Can be `normal`, `separator`, `submenu`, `checkbox` or
    `radio`.
@@ -31,6 +31,7 @@ See [`Menu`](menu.md) for examples.
    menu items.
  * `registerAccelerator` Boolean (optional) _Linux_ _Windows_ - If false, the accelerator won't be registered
    with the system, but it will still be displayed. Defaults to true.
+  * `sharingItem` SharingItem (optional) _macOS_ - The item to share when the `role` is `shareMenu`.
  * `submenu` (MenuItemConstructorOptions[] | [Menu](menu.md)) (optional) - Should be specified
    for `submenu` type menu items. If `submenu` is specified, the `type: 'submenu'` can be omitted.
    If the value is not a [`Menu`](menu.md) then it will be automatically converted to one using
@@ -87,6 +88,7 @@ The `role` property can have following values:
 * `resetZoom` - Reset the focused page's zoom level to the original size.
 * `zoomIn` - Zoom in the focused page by 10%.
 * `zoomOut` - Zoom out the focused page by 10%.
+* `toggleSpellChecker` - Enable/disable builtin spell checker.
 * `fileMenu` - Whole default "File" menu (Close / Quit)
 * `editMenu` - Whole default "Edit" menu (Undo, Copy, etc.).
 * `viewMenu` - Whole default "View" menu (Reload, Toggle Developer Tools, etc.)
@@ -112,6 +114,7 @@ The following additional roles are available on _macOS_:
 * `services` - The submenu is a ["Services"](https://developer.apple.com/documentation/appkit/nsapplication/1428608-servicesmenu?language=objc) menu. This is only intended for use in the Application Menu and is *not* the same as the "Services" submenu used in context menus in macOS apps, which is not implemented in Electron.
 * `recentDocuments` - The submenu is an "Open Recent" menu.
 * `clearRecentDocuments` - Map to the `clearRecentDocuments` action.
+* `shareMenu` - The submenu is [share menu][ShareMenu]. The `sharingItem` property must also be set to indicate the item to share.

 When specifying a `role` on macOS, `label` and `accelerator` are the only
 options that will affect the menu item. All other options will be ignored.
@@ -136,6 +139,7 @@ A `String` indicating the item's visible label.

 A `Function` that is fired when the MenuItem receives a click event.
 It can be called with `menuItem.click(event, focusedWindow, focusedWebContents)`.
+
 * `event` [KeyboardEvent](structures/keyboard-event.md)
 * `focusedWindow` [BrowserWindow](browser-window.md)
 * `focusedWebContents` [WebContents](web-contents.md)
@@ -200,6 +204,12 @@ system or just displayed.

 This property can be dynamically changed.

+#### `menuItem.sharingItem` _macOS_
+
+A `SharingItem` indicating the item to share when the `role` is `shareMenu`.
+
+This property can be dynamically changed.
+
 #### `menuItem.commandId`

 A `Number` indicating an item's sequential unique id.
@@ -207,3 +217,5 @@ A `Number` indicating an item's sequential unique id.
 #### `menuItem.menu`

 A `Menu` that the item is a part of.
+
+[ShareMenu]: https://developer.apple.com/design/human-interface-guidelines/macos/extensions/share-extensions/
--- a/docs/api/menu.md
+++ b/docs/api/menu.md
@@ -141,13 +141,7 @@ can have a submenu.

 ## Examples

-The `Menu` class is only available in the main process, but you can also use it
-in the render process via the [`remote`](remote.md) module.
-
-### Main process
-
-An example of creating the application menu in the main process with the
-simple template API:
+An example of creating the application menu with the simple template API:

 ```javascript
 const { app, Menu } = require('electron')
@@ -257,26 +251,36 @@ Menu.setApplicationMenu(menu)

 ### Render process

-Below is an example of creating a menu dynamically in a web page
-(render process) by using the [`remote`](remote.md) module, and showing it when
-the user right clicks the page:
+To create menus initiated by the renderer process, send the required
+information to the main process using IPC and have the main process display the
+menu on behalf of the renderer.

-```html
-<!-- index.html -->
-<script>
-const { remote } = require('electron')
-const { Menu, MenuItem } = remote
-
-const menu = new Menu()
-menu.append(new MenuItem({ label: 'MenuItem1', click() { console.log('item 1 clicked') } }))
-menu.append(new MenuItem({ type: 'separator' }))
-menu.append(new MenuItem({ label: 'MenuItem2', type: 'checkbox', checked: true }))
+Below is an example of showing a menu when the user right clicks the page:

+```js
+// renderer
 window.addEventListener('contextmenu', (e) => {
  e.preventDefault()
-  menu.popup({ window: remote.getCurrentWindow() })
-}, false)
-</script>
+  ipcRenderer.send('show-context-menu')
+})
+
+ipcRenderer.on('context-menu-command', (e, command) => {
+  // ...
+})
+
+// main
+ipcMain.on('show-context-menu', (event) => {
+  const template = [
+    {
+      label: 'Menu Item 1',
+      click: () => { event.sender.send('context-menu-command', 'menu-item-1') }
+    },
+    { type: 'separator' },
+    { label: 'Menu Item 2', type: 'checkbox', checked: true }
+  ]
+  const menu = Menu.buildFromTemplate(template)
+  menu.popup(BrowserWindow.fromWebContents(event.sender))
+})
 ```

 ## Notes on macOS Application Menu
--- a/docs/api/message-channel-main.md
+++ b/docs/api/message-channel-main.md
@@ -12,10 +12,21 @@ channel messaging.
 Process: [Main](../glossary.md#main-process)

 Example:
+
 ```js
+// Main process
 const { port1, port2 } = new MessageChannelMain()
 w.webContents.postMessage('port', null, [port2])
 port1.postMessage({ some: 'message' })
+
+// Renderer process
+const { ipcRenderer } = require('electron')
+ipcRenderer.on('port', (e) => {
+  // e.ports is a list of ports sent along with this message
+  e.ports[0].on('message', (messageEvent) => {
+    console.log(messageEvent.data)
+  })
+})
 ```

 ### Instance Properties
--- a/docs/api/modernization/overview.md
+++ b/docs/api/modernization/overview.md
@@ -1,6 +1,6 @@
 ## Modernization

-The Electron team is currently undergoing an initiative to modernize our API in a few concrete ways. These include: updating our modules to use idiomatic JS properties instead of separate `getPropertyX` and `setpropertyX`, converting callbacks to promises, and removing some other anti-patterns present in our APIs. The current status of the Promise initiative can be tracked in the [promisification](promisification.md) tracking file.
+The Electron team is currently undergoing an initiative to modernize our API in a few concrete ways. These include: updating our modules to use idiomatic JS properties instead of separate `getPropertyX` and `setPropertyX`, converting callbacks to promises, and removing some other anti-patterns present in our APIs. The current status of the Promise initiative can be tracked in the [promisification](promisification.md) tracking file.

 As we work to perform these updates, we seek to create the least disruptive amount of change at any given time, so as many changes as possible will be introduced in a backward compatible manner and deprecated after enough time has passed to give users a chance to upgrade their API calls.

--- a/docs/api/modernization/property-updates.md
+++ b/docs/api/modernization/property-updates.md
@@ -27,7 +27,7 @@ The Electron team is currently undergoing an initiative to convert separate gett
 * `DownloadItem` class
  * `savePath`
 * `BrowserWindow` module
-  * `autohideMenuBar`
+  * `autoHideMenuBar`
  * `resizable`
  * `maximizable`
  * `minimizable`
--- a/docs/api/native-theme.md
+++ b/docs/api/native-theme.md
@@ -34,6 +34,7 @@ Setting this property to `system` will remove the override and
 everything will be reset to the OS default.  By default `themeSource` is `system`.

 Settings this property to `dark` will have the following effects:
+
 * `nativeTheme.shouldUseDarkColors` will be `true` when accessed
 * Any UI Electron renders on Linux and Windows including context menus, devtools, etc. will use the dark UI.
 * Any UI the OS renders on macOS including menus, window frames, etc. will use the dark UI.
@@ -41,6 +42,7 @@ Settings this property to `dark` will have the following effects:
 * The `updated` event will be emitted

 Settings this property to `light` will have the following effects:
+
 * `nativeTheme.shouldUseDarkColors` will be `false` when accessed
 * Any UI Electron renders on Linux and Windows including context menus, devtools, etc. will use the light UI.
 * Any UI the OS renders on macOS including menus, window frames, etc. will use the light UI.
@@ -49,6 +51,7 @@ Settings this property to `light` will have the following effects:

 The usage of this property should align with a classic "dark mode" state machine in your application
 where the user has three options.
+
 * `Follow OS` --> `themeSource = 'system'`
 * `Dark Mode` --> `themeSource = 'dark'`
 * `Light Mode` --> `themeSource = 'light'`
--- a/docs/api/net.md
+++ b/docs/api/net.md
@@ -8,7 +8,7 @@ The `net` module is a client-side API for issuing HTTP(S) requests. It is
 similar to the [HTTP](https://nodejs.org/api/http.html) and
 [HTTPS](https://nodejs.org/api/https.html) modules of Node.js but uses
 Chromium's native networking library instead of the Node.js implementation,
-offering better support for web proxies.
+offering better support for web proxies. It also supports checking network status.

 The following is a non-exhaustive list of why you may consider using the `net`
 module instead of the native Node.js modules:
@@ -62,3 +62,25 @@ Creates a [`ClientRequest`](./client-request.md) instance using the provided
 `options` which are directly forwarded to the `ClientRequest` constructor.
 The `net.request` method would be used to issue both secure and insecure HTTP
 requests according to the specified protocol scheme in the `options` object.
+
+### `net.isOnline()`
+
+Returns `Boolean` - Whether there is currently internet connection.
+
+A return value of `false` is a pretty strong indicator that the user
+won't be able to connect to remote sites. However, a return value of
+`true` is inconclusive; even if some link is up, it is uncertain
+whether a particular connection attempt to a particular remote site
+will be successful.
+
+## Properties
+
+### `net.online` _Readonly_
+
+A `Boolean` property. Whether there is currently internet connection.
+
+A return value of `false` is a pretty strong indicator that the user
+won't be able to connect to remote sites. However, a return value of
+`true` is inconclusive; even if some link is up, it is uncertain
+whether a particular connection attempt to a particular remote site
+will be successful.
--- a/docs/api/notification.md
+++ b/docs/api/notification.md
@@ -29,9 +29,9 @@ Returns `Boolean` - Whether or not desktop notifications are supported on the cu
 ### `new Notification([options])`

 * `options` Object (optional)
-  * `title` String - A title for the notification, which will be shown at the top of the notification window when it is shown.
+  * `title` String (optional) - A title for the notification, which will be shown at the top of the notification window when it is shown.
  * `subtitle` String (optional) _macOS_ - A subtitle for the notification, which will be displayed below the title.
-  * `body` String - The body text of the notification, which will be displayed below the title or subtitle.
+  * `body` String (optional) - The body text of the notification, which will be displayed below the title or subtitle.
  * `silent` Boolean (optional) - Whether or not to emit an OS notification noise when showing the notification.
  * `icon` (String | [NativeImage](native-image.md)) (optional) - An icon to use in the notification.
  * `hasReply` Boolean (optional) _macOS_ - Whether or not to add an inline reply option to the notification.
@@ -41,6 +41,7 @@ Returns `Boolean` - Whether or not desktop notifications are supported on the cu
  * `urgency` String (optional) _Linux_ - The urgency level of the notification. Can be 'normal', 'critical', or 'low'.
  * `actions` [NotificationAction[]](structures/notification-action.md) (optional) _macOS_ - Actions to add to the notification. Please read the available actions and limitations in the `NotificationAction` documentation.
  * `closeButtonText` String (optional) _macOS_ - A custom title for the close button of an alert. An empty string will cause the default localized text to be used.
+  * `toastXml` String (optional) _Windows_ - A custom description of the Notification on Windows superseding all properties above. Provides full customization of design and behavior of the notification.

 ### Instance Events

@@ -94,6 +95,15 @@ Returns:
 * `event` Event
 * `index` Number - The index of the action that was activated.

+#### Event: 'failed' _Windows_
+
+Returns:
+
+* `event` Event
+* `error` String - The error encountered during execution of the `show()` method.
+
+Emitted when an error is encountered while creating and showing the native notification.
+
 ### Instance Methods

 Objects created with `new Notification` have the following instance methods:
@@ -162,6 +172,10 @@ If `timeoutType` is set to 'never', the notification never expires. It stays ope

 A [`NotificationAction[]`](structures/notification-action.md) property representing the actions of the notification.

+#### `notification.toastXml` _Windows_
+
+A `String` property representing the custom Toast XML of the notification.
+
 ### Playing Sounds

 On macOS, you can specify the name of the sound you'd like to play when the
--- 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'
+### Event: 'suspend' _macOS_ _Windows_

 Emitted when the system is suspending.

-### Event: 'resume'
+### 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.

@@ -39,6 +39,14 @@ Emitted when the system is about to lock the screen.

 Emitted as soon as the systems screen is unlocked.

+### Event: 'user-did-become-active' _macOS_
+
+Emitted when a login session is activated. See [documentation](https://developer.apple.com/documentation/appkit/nsworkspacesessiondidbecomeactivenotification?language=objc) for more information.
+
+### Event: 'user-did-resign-active' _macOS_
+
+Emitted when a login session is deactivated. See [documentation](https://developer.apple.com/documentation/appkit/nsworkspacesessiondidresignactivenotification?language=objc) for more information.
+
 ## Methods

 The `powerMonitor` module has the following methods:
@@ -57,3 +65,18 @@ before considered idle.  `locked` is available on supported systems only.
 Returns `Integer` - Idle time in seconds

 Calculate system idle time in seconds.
+
+### `powerMonitor.isOnBatteryPower()`
+
+Returns `Boolean` - Whether the system is on battery power.
+
+To monitor for changes in this property, use the `on-battery` and `on-ac`
+events.
+
+## Properties
+
+### `powerMonitor.onBatteryPower`
+
+A `Boolean` property. True if the system is on battery power.
+
+See [`powerMonitor.isOnBatteryPower()`](#powermonitorisonbatterypower).
--- a/docs/api/process.md
+++ b/docs/api/process.md
@@ -11,6 +11,7 @@ It adds the following events, properties, and methods:
 ## Sandbox

 In sandboxed renderers the `process` object contains only a subset of the APIs:
+
 - `crash()`
 - `hang()`
 - `getCreationTime()`
@@ -104,6 +105,7 @@ A `Boolean` that controls whether or not deprecations printed to `stderr` includ
 This property is instead of the `--trace-deprecation` command line flag.

 ### `process.traceProcessWarnings`
+
 A `Boolean` that controls whether or not process warnings printed to `stderr` include
 their stack trace. Setting this to `true` will print stack traces for process warnings
 (including deprecations). This property is instead of the `--trace-warnings` command
--- a/docs/api/protocol.md
+++ b/docs/api/protocol.md
@@ -112,7 +112,7 @@ expect streaming responses.

 * `scheme` String
 * `handler` Function
-  * `request` ProtocolRequest
+  * `request` [ProtocolRequest](structures/protocol-request.md)
  * `callback` Function
    * `response` (String | [ProtocolResponse](structures/protocol-response.md))

@@ -133,7 +133,7 @@ from protocols that follow the "generic URI syntax" like `file:`.

 * `scheme` String
 * `handler` Function
-  * `request` ProtocolRequest
+  * `request` [ProtocolRequest](structures/protocol-request.md)
  * `callback` Function
    * `response` (Buffer | [ProtocolResponse](structures/protocol-response.md))

@@ -157,7 +157,7 @@ protocol.registerBufferProtocol('atom', (request, callback) => {

 * `scheme` String
 * `handler` Function
-  * `request` ProtocolRequest
+  * `request` [ProtocolRequest](structures/protocol-request.md)
  * `callback` Function
    * `response` (String | [ProtocolResponse](structures/protocol-response.md))

@@ -173,7 +173,7 @@ property.

 * `scheme` String
 * `handler` Function
-  * `request` ProtocolRequest
+  * `request` [ProtocolRequest](structures/protocol-request.md)
  * `callback` Function
    * `response` ProtocolResponse

@@ -188,7 +188,7 @@ should be called with an object that has the `url` property.

 * `scheme` String
 * `handler` Function
-  * `request` ProtocolRequest
+  * `request` [ProtocolRequest](structures/protocol-request.md)
  * `callback` Function
    * `response` (ReadableStream | [ProtocolResponse](structures/protocol-response.md))

@@ -251,7 +251,7 @@ Returns `Boolean` - Whether `scheme` is already registered.

 * `scheme` String
 * `handler` Function
-  * `request` ProtocolRequest
+  * `request` [ProtocolRequest](structures/protocol-request.md)
  * `callback` Function
    * `response` (String | [ProtocolResponse](structures/protocol-response.md))

@@ -264,7 +264,7 @@ which sends a file as a response.

 * `scheme` String
 * `handler` Function
-  * `request` ProtocolRequest
+  * `request` [ProtocolRequest](structures/protocol-request.md)
  * `callback` Function
    * `response` (String | [ProtocolResponse](structures/protocol-response.md))

@@ -277,7 +277,7 @@ which sends a `String` as a response.

 * `scheme` String
 * `handler` Function
-  * `request` ProtocolRequest
+  * `request` [ProtocolRequest](structures/protocol-request.md)
  * `callback` Function
    * `response` (Buffer | [ProtocolResponse](structures/protocol-response.md))

@@ -290,7 +290,7 @@ which sends a `Buffer` as a response.

 * `scheme` String
 * `handler` Function
-  * `request` ProtocolRequest
+  * `request` [ProtocolRequest](structures/protocol-request.md)
  * `callback` Function
    * `response` [ProtocolResponse](structures/protocol-response.md)

@@ -303,7 +303,7 @@ which sends a new HTTP request as a response.

 * `scheme` String
 * `handler` Function
-  * `request` ProtocolRequest
+  * `request` [ProtocolRequest](structures/protocol-request.md)
  * `callback` Function
    * `response` (ReadableStream | [ProtocolResponse](structures/protocol-response.md))

--- a/docs/api/remote.md
+++ b/docs/api/remote.md
@@ -4,6 +4,16 @@

 Process: [Renderer](../glossary.md#renderer-process)

+> ⚠️ WARNING ⚠️
+> The `remote` module is [deprecated](https://github.com/electron/electron/issues/21408).
+> Instead of `remote`, use [`ipcRenderer`](ipc-renderer.md) and
+> [`ipcMain`](ipc-main.md).
+>
+> Read more about why the `remote` module is deprecated [here](https://medium.com/@nornagon/electrons-remote-module-considered-harmful-70d69500f31).
+>
+> If you still want to use `remote` despite the performance and security
+> concerns, see [@electron/remote](https://github.com/electron/remote).
+
 The `remote` module provides a simple way to do inter-process communication
 (IPC) between the renderer process (web page) and the main process.

@@ -25,6 +35,7 @@ win.loadURL('https://github.com')
 you can use [webContents.executeJavaScript](web-contents.md#contentsexecutejavascriptcode-usergesture).

 **Note:** The remote module can be disabled for security reasons in the following contexts:
+
 - [`BrowserWindow`](browser-window.md) - by setting the `enableRemoteModule` option to `false`.
 - [`<webview>`](webview-tag.md) - by setting the `enableremotemodule` attribute to `false`.

@@ -140,11 +151,32 @@ console.log(app)

 The `remote` module has the following methods:

-### `remote.require(module)`
+### `remote.getCurrentWindow()`

-* `module` String
+Returns [`BrowserWindow`](browser-window.md) - The window to which this web page
+belongs.

-Returns `any` - The object returned by `require(module)` in the main process.
+**Note:** Do not use `removeAllListeners` on [`BrowserWindow`](browser-window.md).
+Use of this can remove all [`blur`](https://developer.mozilla.org/en-US/docs/Web/Events/blur)
+listeners, disable click events on touch bar buttons, and other unintended
+consequences.
+
+### `remote.getCurrentWebContents()`
+
+Returns [`WebContents`](web-contents.md) - The web contents of this web page.
+
+### `remote.getGlobal(name)`
+
+* `name` String
+
+Returns `any` - The global variable of `name` (e.g. `global[name]`) in the main
+process.
+
+## Properties
+
+### `remote.require`
+
+A `NodeJS.Require` function equivalent to `require(module)` in the main process.
 Modules specified by their relative path will resolve relative to the entrypoint
 of the main process.

@@ -176,29 +208,6 @@ module.exports = 'bar'
 const foo = require('electron').remote.require('./foo') // bar
 ```

-### `remote.getCurrentWindow()`
-
-Returns [`BrowserWindow`](browser-window.md) - The window to which this web page
-belongs.
-
-**Note:** Do not use `removeAllListeners` on [`BrowserWindow`](browser-window.md).
-Use of this can remove all [`blur`](https://developer.mozilla.org/en-US/docs/Web/Events/blur)
-listeners, disable click events on touch bar buttons, and other unintended
-consequences.
-
-### `remote.getCurrentWebContents()`
-
-Returns [`WebContents`](web-contents.md) - The web contents of this web page.
-
-### `remote.getGlobal(name)`
-
-* `name` String
-
-Returns `any` - The global variable of `name` (e.g. `global[name]`) in the main
-process.
-
-## Properties
-
 ### `remote.process` _Readonly_

 A `NodeJS.Process` object.  The `process` object in the main process. This is the same as
--- a/docs/api/sandbox-option.md
+++ b/docs/api/sandbox-option.md
@@ -88,26 +88,17 @@ and preload.js:

 ```js
 // This file is loaded whenever a javascript context is created. It runs in a
-// private scope that can access a subset of Electron renderer APIs. We must be
-// careful to not leak any objects into the global scope!
-const { ipcRenderer, remote } = require('electron')
-const fs = remote.require('fs')
-
-// read a configuration file using the `fs` module
-const buf = fs.readFileSync('allowed-popup-urls.json')
-const allowedUrls = JSON.parse(buf.toString('utf8'))
+// private scope that can access a subset of Electron renderer APIs. Without
+// contextIsolation enabled, it's possible to accidentally leak privileged
+// globals like ipcRenderer to web content.
+const { ipcRenderer } = require('electron')

 const defaultWindowOpen = window.open

-function customWindowOpen (url, ...args) {
-  if (allowedUrls.indexOf(url) === -1) {
-    ipcRenderer.sendSync('blocked-popup-notification', location.origin, url)
-    return null
-  }
-  return defaultWindowOpen(url, ...args)
+window.open = function customWindowOpen (url, ...args) {
+  ipcRenderer.send('report-window-open', location.origin, url, args)
+  return defaultWindowOpen(url + '?from_electron=1', ...args)
 }
-
-window.open = customWindowOpen
 ```

 Important things to notice in the preload script:
@@ -115,8 +106,6 @@ Important things to notice in the preload script:
 - Even though the sandboxed renderer doesn't have Node.js running, it still has
  access to a limited node-like environment: `Buffer`, `process`, `setImmediate`,
  `clearImmediate` and `require` are available.
- The preload script can indirectly access all APIs from the main process through the
-  `remote` and `ipcRenderer` modules.
 - The preload script must be contained in a single script, but it is possible to have
  complex preload code composed with multiple modules by using a tool like
  webpack or browserify. An example of using browserify is below.
@@ -144,15 +133,12 @@ following modules:
  - `desktopCapturer`
  - `ipcRenderer`
  - `nativeImage`
-  - `remote`
  - `webFrame`
 - `events`
 - `timers`
 - `url`

-More may be added as needed to expose more Electron APIs in the sandbox, but any
-module in the main process can already be used through
-`electron.remote.require`.
+More may be added as needed to expose more Electron APIs in the sandbox.

 ## Rendering untrusted content

--- a/docs/api/session.md
+++ b/docs/api/session.md
@@ -91,6 +91,41 @@ session.defaultSession.on('will-download', (event, item, webContents) => {
 })
 ```

+#### Event: 'extension-loaded'
+
+Returns:
+
+* `event` Event
+* `extension` [Extension](structures/extension.md)
+
+Emitted after an extension is loaded. This occurs whenever an extension is
+added to the "enabled" set of extensions. This includes:
+
+- Extensions being loaded from `Session.loadExtension`.
+- Extensions being reloaded:
+  * from a crash.
+  * if the extension requested it ([`chrome.runtime.reload()`](https://developer.chrome.com/extensions/runtime#method-reload)).
+
+#### Event: 'extension-unloaded'
+
+Returns:
+
+* `event` Event
+* `extension` [Extension](structures/extension.md)
+
+Emitted after an extension is unloaded. This occurs when
+`Session.removeExtension` is called.
+
+#### Event: 'extension-ready'
+
+Returns:
+
+* `event` Event
+* `extension` [Extension](structures/extension.md)
+
+Emitted after an extension is loaded and all necessary browser state is
+initialized to support the start of the extension's background page.
+
 #### Event: 'preconnect'

 Returns:
@@ -144,6 +179,76 @@ Emitted when a hunspell dictionary file download fails.  For details
 on the failure you should collect a netlog and inspect the download
 request.

+#### Event: 'select-serial-port' _Experimental_
+
+Returns:
+
+* `event` Event
+* `portList` [SerialPort[]](structures/serial-port.md)
+* `webContents` [WebContents](web-contents.md)
+* `callback` Function
+  * `portId` String
+
+Emitted when a serial port needs to be selected when a call to
+`navigator.serial.requestPort` is made. `callback` should be called with
+`portId` to be selected, passing an empty string to `callback` will
+cancel the request.  Additionally, permissioning on `navigator.serial` can
+be managed by using [ses.setPermissionCheckHandler(handler)](#sessetpermissioncheckhandlerhandler)
+with the `serial` permission.
+
+Because this is an experimental feature it is disabled by default.  To enable this feature, you
+will need to use the `--enable-features=ElectronSerialChooser` command line switch.  Additionally
+because this is an experimental Chromium feature you will need to set `enableBlinkFeatures: 'Serial'`
+on the `webPreferences` property when opening a BrowserWindow.
+
+```javascript
+const { app, BrowserWindow } = require('electron')
+
+let win = null
+app.commandLine.appendSwitch('enable-features', 'ElectronSerialChooser')
+
+app.whenReady().then(() => {
+  win = new BrowserWindow({
+    width: 800,
+    height: 600,
+    webPreferences: {
+      enableBlinkFeatures: 'Serial'
+    }
+  })
+  win.webContents.session.on('select-serial-port', (event, portList, callback) => {
+    event.preventDefault()
+    const selectedPort = portList.find((device) => {
+      return device.vendorId === 0x2341 && device.productId === 0x0043
+    })
+    if (!selectedPort) {
+      callback('')
+    } else {
+      callback(result1.portId)
+    }
+  })
+})
+```
+
+#### Event: 'serial-port-added' _Experimental_
+
+Returns:
+
+* `event` Event
+* `port` [SerialPort](structures/serial-port.md)
+* `webContents` [WebContents](web-contents.md)
+
+Emitted after `navigator.serial.requestPort` has been called and `select-serial-port` has fired if a new serial port becomes available.  For example, this event will fire when a new USB device is plugged in.
+
+#### Event: 'serial-port-removed' _Experimental_
+
+Returns:
+
+* `event` Event
+* `port` [SerialPort](structures/serial-port.md)
+* `webContents` [WebContents](web-contents.md)
+
+Emitted after `navigator.serial.requestPort` has been called and `select-serial-port` has fired if a serial port has been removed.  For example, this event will fire when a USB device is unplugged.
+
 ### Instance Methods

 The following methods are available on instances of `Session`:
@@ -179,6 +284,27 @@ Writes any unwritten DOMStorage data to disk.
 #### `ses.setProxy(config)`

 * `config` Object
+  * `mode` String (optional) - The proxy mode. Should be one of `direct`,
+    `auto_detect`, `pac_script`, `fixed_servers` or `system`. If it's
+    unspecified, it will be automatically determined based on other specified
+    options.
+    * `direct`
+      In direct mode all connections are created directly, without any proxy involved.
+    * `auto_detect`
+      In auto_detect mode the proxy configuration is determined by a PAC script that can
+      be downloaded at http://wpad/wpad.dat.
+    * `pac_script`
+      In pac_script mode the proxy configuration is determined by a PAC script that is
+      retrieved from the URL specified in the `pacScript`. This is the default mode
+      if `pacScript` is specified.
+    * `fixed_servers`
+      In fixed_servers mode the proxy configuration is specified in `proxyRules`.
+      This is the default mode if `proxyRules` is specified.
+    * `system`
+      In system mode the proxy configuration is taken from the operating system.
+      Note that the system mode is different from setting no proxy configuration.
+      In the latter case, Electron falls back to the system settings
+      only if no command-line options influence the proxy configuration.
  * `pacScript` String (optional) - The URL associated with the PAC file.
  * `proxyRules` String (optional) - Rules indicating which proxies to use.
  * `proxyBypassRules` String (optional) - Rules indicating which URLs should
@@ -188,9 +314,12 @@ Returns `Promise<void>` - Resolves when the proxy setting process is complete.

 Sets the proxy settings.

-When `pacScript` and `proxyRules` are provided together, the `proxyRules`
+When `mode` is unspecified, `pacScript` and `proxyRules` are provided together, the `proxyRules`
 option is ignored and `pacScript` configuration is applied.

+You may need `ses.closeAllConnections` to close currently in flight connections to prevent
+pooled sockets using previous proxy from being reused by future requests.
+
 The `proxyRules` has to follow the rules below:

 ```sh
@@ -226,7 +355,7 @@ The `proxyBypassRules` is a comma separated list of rules described below:
     "foobar.com", "*foobar.com", "*.foobar.com", "*foobar.com:99",
     "https://x.*.y.com:99"

- * `"." HOSTNAME_SUFFIX_PATTERN [ ":" PORT ]`
+* `"." HOSTNAME_SUFFIX_PATTERN [ ":" PORT ]`

   Match a particular domain suffix.

@@ -259,6 +388,10 @@ The `proxyBypassRules` is a comma separated list of rules described below:

 Returns `Promise<String>` - Resolves with the proxy information for `url`.

+#### `ses.forceReloadProxyConfig()`
+
+Returns `Promise<void>` - Resolves when the all internal states of proxy service is reset and the latest proxy configuration is reapplied if it's already available. The pac script will be fetched from `pacScript` again if the proxy mode is `pac_script`.
+
 #### `ses.setDownloadPath(path)`

 * `path` String - The download location.
@@ -300,6 +433,12 @@ window.webContents.session.enableNetworkEmulation({ offline: true })

 Preconnects the given number of sockets to an origin.

+#### `ses.closeAllConnections()`
+
+Returns `Promise<void>` - Resolves when all connections are closed.
+
+**Note:** It will terminate / fail all requests currently in flight.
+
 #### `ses.disableNetworkEmulation()`

 Disables any network emulation already active for the `session`. Resets to
@@ -316,7 +455,7 @@ the original network configuration.
    * `errorCode` Integer - Error code.
  * `callback` Function
    * `verificationResult` Integer - Value can be one of certificate error codes
-    from [here](https://code.google.com/p/chromium/codesearch#chromium/src/net/base/net_error_list.h).
+    from [here](https://source.chromium.org/chromium/chromium/src/+/master:net/base/net_error_list.h).
    Apart from the certificate error codes, the following special codes can be used.
      * `0` - Indicates success and disables Certificate Transparency verification.
      * `-2` - Indicates failure.
@@ -344,11 +483,14 @@ win.webContents.session.setCertificateVerifyProc((request, callback) => {
 })
 ```

+> **NOTE:** The result of this procedure is cached by the network service.
+
 #### `ses.setPermissionRequestHandler(handler)`

 * `handler` Function | null
  * `webContents` [WebContents](web-contents.md) - WebContents requesting the permission.  Please note that if the request comes from a subframe you should use `requestingUrl` to check the request origin.
  * `permission` String - The type of requested permission.
+    * `clipboard-read` - Request access to read from the clipboard.
    * `media` -  Request access to media devices such as camera, microphone and speakers.
    * `mediaKeySystem` - Request access to DRM protected content.
    * `geolocation` - Request access to user's current location.
@@ -384,9 +526,9 @@ 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'.
+  * `permission` String - Type of permission check.  Valid values are `midiSysex`, `notifications`, `geolocation`, `media`,`mediaKeySystem`,`midi`, `pointerLock`, `fullscreen`, `openExternal`, or `serial`.
  * `requestingOrigin` String - The origin URL of the permission check
  * `details` Object - Some properties are only available on certain permission types.
    * `securityOrigin` String - The security origin of the `media` check.
@@ -458,6 +600,29 @@ will be temporary.

 Returns `String` - The user agent for this session.

+#### `ses.setSSLConfig(config)`
+
+* `config` Object
+  * `minVersion` String (optional) - Can be `tls1`, `tls1.1`, `tls1.2` or `tls1.3`. The
+    minimum SSL version to allow when connecting to remote servers. Defaults to
+    `tls1`.
+  * `maxVersion` String (optional) - Can be `tls1.2` or `tls1.3`. The maximum SSL version
+    to allow when connecting to remote servers. Defaults to `tls1.3`.
+  * `disabledCipherSuites` Integer[] (optional) - List of cipher suites which
+    should be explicitly prevented from being used in addition to those
+    disabled by the net built-in policy.
+    Supported literal forms: 0xAABB, where AA is `cipher_suite[0]` and BB is
+    `cipher_suite[1]`, as defined in RFC 2246, Section 7.4.1.2. Unrecognized but
+    parsable cipher suites in this form will not return an error.
+    Ex: To disable TLS_RSA_WITH_RC4_128_MD5, specify 0x0004, while to
+    disable TLS_ECDH_ECDSA_WITH_RC4_128_SHA, specify 0xC002.
+    Note that TLSv1.3 ciphers cannot be disabled using this mechanism.
+
+Sets the SSL configuration for the session. All subsequent network requests
+will use the new configuration. Existing network connections (such as WebSocket
+connections) will not be terminated, but old sockets in the pool will not be
+reused for new connections.
+
 #### `ses.getBlobData(identifier)`

 * `identifier` String - Valid UUID.
@@ -510,6 +675,16 @@ this session just before normal `preload` scripts run.
 Returns `String[]` an array of paths to preload scripts that have been
 registered.

+#### `ses.setSpellCheckerEnabled(enable)`
+
+* `enable` Boolean
+
+Sets whether to enable the builtin spell checker.
+
+#### `ses.isSpellCheckerEnabled()`
+
+Returns `Boolean` - Whether the builtin spell checker is enabled.
+
 #### `ses.setSpellCheckerLanguages(languages)`

 * `languages` String[] - An array of language codes to enable the spellchecker for.
@@ -638,7 +813,11 @@ The following properties are available on instances of `Session`:
 #### `ses.availableSpellCheckerLanguages` _Readonly_

 A `String[]` array which consists of all the known available spell checker languages.  Providing a language
-code to the `setSpellCheckerLanaguages` API that isn't in this array will result in an error.
+code to the `setSpellCheckerLanguages` API that isn't in this array will result in an error.
+
+#### `ses.spellCheckerEnabled`
+
+A `Boolean` indicating whether builtin spell checker is enabled.

 #### `ses.cookies` _Readonly_

@@ -662,12 +841,12 @@ const path = require('path')

 app.whenReady().then(() => {
  const protocol = session.fromPartition('some-partition').protocol
-  protocol.registerFileProtocol('atom', (request, callback) => {
+  if (!protocol.registerFileProtocol('atom', (request, callback) => {
    const url = request.url.substr(7)
    callback({ path: path.normalize(`${__dirname}/${url}`) })
-  }, (error) => {
-    if (error) console.error('Failed to register protocol')
-  })
+  })) {
+    console.error('Failed to register protocol')
+  }
 })
 ```

--- a/docs/api/share-menu.md
+++ b/docs/api/share-menu.md
@@ -0,0 +1,45 @@
+## Class: ShareMenu
+
+> Create share menu on macOS.
+
+Process: [Main](../glossary.md#main-process)
+
+The `ShareMenu` class creates [Share Menu][share-menu] on macOS, which can be
+used to share information from the current context to apps, social media
+accounts, and other services.
+
+For including the share menu as a submenu of other menus, please use the
+`shareMenu` role of [`MenuItem`](menu-item.md).
+
+### `new ShareMenu(sharingItem)`
+
+* `sharingItem` SharingItem - The item to share.
+
+Creates a new share menu.
+
+### Instance Methods
+
+The `shareMenu` object has the following instance methods:
+
+#### `shareMenu.popup([options])`
+
+* `options` PopupOptions (optional)
+  * `browserWindow` [BrowserWindow](browser-window.md) (optional) - Default is the focused window.
+  * `x` Number (optional) - Default is the current mouse cursor position.
+    Must be declared if `y` is declared.
+  * `y` Number (optional) - Default is the current mouse cursor position.
+    Must be declared if `x` is declared.
+  * `positioningItem` Number (optional) _macOS_ - The index of the menu item to
+    be positioned under the mouse cursor at the specified coordinates. Default
+    is -1.
+  * `callback` Function (optional) - Called when menu is closed.
+
+Pops up this menu as a context menu in the [`BrowserWindow`](browser-window.md).
+
+#### `shareMenu.closePopup([browserWindow])`
+
+* `browserWindow` [BrowserWindow](browser-window.md) (optional) - Default is the focused window.
+
+Closes the context menu in the `browserWindow`.
+
+[share-menu]: https://developer.apple.com/design/human-interface-guidelines/macos/extensions/share-extensions/
--- a/docs/api/shell.md
+++ b/docs/api/shell.md
@@ -45,15 +45,27 @@ Returns `Promise<void>`

 Open the given external protocol URL in the desktop's default manner. (For example, mailto: URLs in the user's default mail agent).

-### `shell.moveItemToTrash(fullPath[, deleteOnFail])`
+### `shell.moveItemToTrash(fullPath[, deleteOnFail])` _Deprecated_

 * `fullPath` String
 * `deleteOnFail` Boolean (optional) - Whether or not to unilaterally remove the item if the Trash is disabled or unsupported on the volume. _macOS_

 Returns `Boolean` - Whether the item was successfully moved to the trash or otherwise deleted.

+> NOTE: This method is deprecated. Use `shell.trashItem` instead.
+
 Move the given file to trash and returns a boolean status for the operation.

+### `shell.trashItem(path)`
+
+* `path` String - path to the item to be moved to the trash.
+
+Returns `Promise<void>` - Resolves when the operation has been completed.
+Rejects if there was an error while deleting the requested item.
+
+This moves a path to the OS-specific trash location (Trash on macOS, Recycle
+Bin on Windows, and a desktop-environment-specific location on Linux).
+
 ### `shell.beep()`

 Play the beep sound.
--- a/docs/api/structures/display.md
+++ b/docs/api/structures/display.md
@@ -10,6 +10,7 @@
 * `colorSpace` String -  represent a color space (three-dimensional object which contains all realizable color combinations) for the purpose of color conversions
 * `colorDepth` Number - The number of bits per pixel.
 * `depthPerComponent` Number - The number of bits per color component.
+* `displayFrequency` Number - The display refresh rate.
 * `bounds` [Rectangle](rectangle.md)
 * `size` [Size](size.md)
 * `workArea` [Rectangle](rectangle.md)
--- a/docs/api/structures/ipc-main-event.md
+++ b/docs/api/structures/ipc-main-event.md
@@ -1,8 +1,10 @@
 # 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
+* `senderFrame` WebFrameMain _Readonly_ - The frame that sent this message
 * `ports` MessagePortMain[] - A list of MessagePorts that were transferred with this message
 * `reply` Function - A function that will send an IPC message to the renderer frame that sent the original message that you are currently handling.  You should use this method to "reply" to the sent message in order to guarantee the reply will go to the correct process and frame.
  * `channel` String
--- a/docs/api/structures/ipc-main-invoke-event.md
+++ b/docs/api/structures/ipc-main-invoke-event.md
@@ -1,4 +1,6 @@
 # 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
+* `senderFrame` WebFrameMain _Readonly_ - The frame that sent this message
--- a/docs/api/structures/ipc-renderer-event.md
+++ b/docs/api/structures/ipc-renderer-event.md
@@ -4,4 +4,4 @@
 * `senderId` Integer - The `webContents.id` that sent the message, you can call `event.sender.sendTo(event.senderId, ...)` to reply to the message, see [ipcRenderer.sendTo][ipc-renderer-sendto] for more information. This only applies to messages sent from a different renderer. Messages sent directly from the main process set `event.senderId` to `0`.
 * `ports` MessagePort[] - A list of MessagePorts that were transferred with this message

-[ipc-renderer-sendto]: #ipcrenderersendtowindowid-channel--arg1-arg2-
+[ipc-renderer-sendto]: ../ipc-renderer.md#ipcrenderersendtowebcontentsid-channel-args
--- a/docs/api/structures/new-window-web-contents-event.md
+++ b/docs/api/structures/new-window-web-contents-event.md
@@ -1,4 +1,3 @@
 # NewWindowWebContentsEvent Object extends `Event`

 * `newGuest` BrowserWindow (optional)
-
--- a/docs/api/structures/notification-response.md
+++ b/docs/api/structures/notification-response.md
@@ -0,0 +1,7 @@
+# NotificationResponse Object
+
+* `actionIdentifier` String - The identifier string of the action that the user selected.
+* `date` Number - The delivery date of the notification.
+* `identifier` String - The unique identifier for this notification request.
+* `userInfo` Record<String, any> - A dictionary of custom information associated with the notification.
+* `userText` String (optional) - The text entered or chosen by the user.
--- a/docs/api/structures/process-metric.md
+++ b/docs/api/structures/process-metric.md
@@ -11,7 +11,8 @@
  * `Pepper Plugin`
  * `Pepper Plugin Broker`
  * `Unknown`
-* `name` String (optional) - The name of the process. i.e. for plugins it might be Flash.
+* `serviceName` String (optional) - The non-localized name of the process.
+* `name` String (optional) - The name of the process.
    Examples for utility: `Audio Service`, `Content Decryption Module Service`, `Network Service`, `Video Capture`, etc.
 * `cpu` [CPUUsage](cpu-usage.md) - CPU usage of the process.
 * `creationTime` Number - Creation time for this process.
--- a/docs/api/structures/protocol-response.md
+++ b/docs/api/structures/protocol-response.md
@@ -28,7 +28,7 @@
 * `session` Session (optional) - The session used for requesting URL, by default
  the HTTP request will reuse the current session. Setting `session` to `null`
  would use a random independent session. This is only used for URL responses.
-* `uploadData` ProtocolResponseUploadData (optional) - The data used as upload data. This is only
+* `uploadData` [ProtocolResponseUploadData](protocol-response-upload-data.md) (optional) - The data used as upload data. This is only
  used for URL responses when `method` is `"POST"`.

-[net-error]: https://code.google.com/p/chromium/codesearch#chromium/src/net/base/net_error_list.h
+[net-error]: https://source.chromium.org/chromium/chromium/src/+/master:net/base/net_error_list.h
--- a/docs/api/structures/serial-port.md
+++ b/docs/api/structures/serial-port.md
@@ -0,0 +1,10 @@
+# SerialPort Object
+
+* `portId` String - Unique identifier for the port.
+* `portName` String - Name of the port.
+* `displayName` String - A string suitable for display to the user for describing this device.
+* `vendorId` String - Optional USB vendor ID.
+* `productId` String - Optional USB product ID.
+* `serialNumber` String - The USB device serial number.
+* `usbDriverName` String (optional) - Represents a single serial port on macOS can be enumerated by multiple drivers.
+* `deviceInstanceId` String (optional) - A stable identifier on Windows that can be used for device permissions.
--- a/docs/api/structures/sharing-item.md
+++ b/docs/api/structures/sharing-item.md
@@ -0,0 +1,5 @@
+# SharingItem Object
+
+* `texts` String[] (optional) - An array of text to share.
+* `filePaths` String[] (optional) - An array of files to share.
+* `urls` String[] (optional) - An array of URLs to share.
--- a/docs/api/structures/shortcut-details.md
+++ b/docs/api/structures/shortcut-details.md
@@ -13,3 +13,5 @@ target's icon.
 DLL or EXE. Default is 0.
 * `appUserModelId` String (optional) - The Application User Model ID. Default
 is empty.
+* `toastActivatorClsid` String (optional) - The Application Toast Activator CLSID. Needed
+for participating in Action Center.
--- a/docs/api/structures/stream-protocol-response.md
+++ b/docs/api/structures/stream-protocol-response.md
@@ -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.
--- a/docs/api/structures/string-protocol-response.md
+++ b/docs/api/structures/string-protocol-response.md
@@ -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.
--- a/docs/api/structures/upload-blob.md
+++ b/docs/api/structures/upload-blob.md
@@ -1,4 +0,0 @@
-# UploadBlob Object
-
-* `type` String - `blob`.
-* `blobUUID` String - UUID of blob data to upload.
--- a/docs/api/synopsis.md
+++ b/docs/api/synopsis.md
@@ -9,11 +9,11 @@ the [native modules](../tutorial/using-native-node-modules.md)).
 Electron also provides some extra built-in modules for developing native
 desktop applications. Some modules are only available in the main process, some
 are only available in the renderer process (web page), and some can be used in
-both processes.
+either process type.

 The basic rule is: if a module is [GUI][gui] or low-level system related, then
 it should be only available in the main process. You need to be familiar with
-the concept of [main process vs. renderer process](../tutorial/application-architecture.md#main-and-renderer-processes)
+the concept of [main process vs. renderer process](../tutorial/quick-start.md#main-and-renderer-processes)
 scripts to be able to use those modules.

 The main process script is like a normal Node.js script:
@@ -29,21 +29,21 @@ app.whenReady().then(() => {
 ```

 The renderer process is no different than a normal web page, except for the
-extra ability to use node modules:
+extra ability to use node modules if `nodeIntegration` is enabled:

 ```html
 <!DOCTYPE html>
 <html>
 <body>
 <script>
-  const { app } = require('electron').remote
-  console.log(app.getVersion())
+  const fs = require('fs')
+  console.log(fs.readFileSync(__filename, 'utf8'))
 </script>
 </body>
 </html>
 ```

-To run your app, read [Run your app](../tutorial/first-app.md#running-your-app).
+To run your app, read [Run your app](../tutorial/quick-start.md#run-your-application).

 ## Destructuring assignment

--- a/docs/api/system-preferences.md
+++ b/docs/api/system-preferences.md
@@ -51,8 +51,6 @@ Returns:

 Returns `Boolean` - Whether the system is in Dark Mode.

-**Note:** On macOS 10.15 Catalina in order for this API to return the correct value when in the "automatic" dark mode setting you must either have `NSRequiresAquaSystemAppearance=false` in your `Info.plist` or be on Electron `>=7.0.0`.  See the [dark mode guide](../tutorial/mojave-dark-mode-guide.md) for more information.
-
 **Deprecated:** Should use the new [`nativeTheme.shouldUseDarkColors`](native-theme.md#nativethemeshouldusedarkcolors-readonly) API.

 ### `systemPreferences.isSwipeTrackingFromScrollEventsEnabled()` _macOS_
--- a/docs/api/touch-bar-button.md
+++ b/docs/api/touch-bar-button.md
@@ -2,7 +2,7 @@

 > Create a button in the touch bar for native macOS applications

-Process: [Main](../tutorial/application-architecture.md#main-and-renderer-processes)
+Process: [Main](../glossary.md#main-process)

 ### `new TouchBarButton(options)`

--- a/docs/api/touch-bar-color-picker.md
+++ b/docs/api/touch-bar-color-picker.md
@@ -2,7 +2,7 @@

 > Create a color picker in the touch bar for native macOS applications

-Process: [Main](../tutorial/application-architecture.md#main-and-renderer-processes)
+Process: [Main](../glossary.md#main-process)

 ### `new TouchBarColorPicker(options)`

--- a/docs/api/touch-bar-group.md
+++ b/docs/api/touch-bar-group.md
@@ -2,7 +2,7 @@

 > Create a group in the touch bar for native macOS applications

-Process: [Main](../tutorial/application-architecture.md#main-and-renderer-processes)
+Process: [Main](../glossary.md#main-process)

 ### `new TouchBarGroup(options)`

--- a/docs/api/touch-bar-label.md
+++ b/docs/api/touch-bar-label.md
@@ -2,7 +2,7 @@

 > Create a label in the touch bar for native macOS applications

-Process: [Main](../tutorial/application-architecture.md#main-and-renderer-processes)
+Process: [Main](../glossary.md#main-process)

 ### `new TouchBarLabel(options)`

--- a/docs/api/touch-bar-other-items-proxy.md
+++ b/docs/api/touch-bar-other-items-proxy.md
@@ -7,6 +7,6 @@
 >
 > Note: Only one instance of this class can be added per TouchBar.

-Process: [Main](../tutorial/application-architecture.md#main-and-renderer-processes)
+Process: [Main](../glossary.md#main-process)

 ### `new TouchBarOtherItemsProxy()`
--- a/docs/api/touch-bar-popover.md
+++ b/docs/api/touch-bar-popover.md
@@ -2,7 +2,7 @@

 > Create a popover in the touch bar for native macOS applications

-Process: [Main](../tutorial/application-architecture.md#main-and-renderer-processes)
+Process: [Main](../glossary.md#main-process)

 ### `new TouchBarPopover(options)`

--- a/docs/api/touch-bar-scrubber.md
+++ b/docs/api/touch-bar-scrubber.md
@@ -2,7 +2,7 @@

 > Create a scrubber (a scrollable selector)

-Process: [Main](../tutorial/application-architecture.md#main-and-renderer-processes)
+Process: [Main](../glossary.md#main-process)

 ### `new TouchBarScrubber(options)`

--- a/docs/api/touch-bar-segmented-control.md
+++ b/docs/api/touch-bar-segmented-control.md
@@ -2,7 +2,7 @@

 > Create a segmented control (a button group) where one button has a selected state

-Process: [Main](../tutorial/application-architecture.md#main-and-renderer-processes)
+Process: [Main](../glossary.md#main-process)

 ### `new TouchBarSegmentedControl(options)`

--- a/docs/api/touch-bar-slider.md
+++ b/docs/api/touch-bar-slider.md
@@ -2,7 +2,7 @@

 > Create a slider in the touch bar for native macOS applications

-Process: [Main](../tutorial/application-architecture.md#main-and-renderer-processes)
+Process: [Main](../glossary.md#main-process)

 ### `new TouchBarSlider(options)`

--- a/docs/api/touch-bar-spacer.md
+++ b/docs/api/touch-bar-spacer.md
@@ -2,7 +2,7 @@

 > Create a spacer between two items in the touch bar for native macOS applications

-Process: [Main](../tutorial/application-architecture.md#main-and-renderer-processes)
+Process: [Main](../glossary.md#main-process)

 ### `new TouchBarSpacer(options)`

--- a/docs/api/touch-bar.md
+++ b/docs/api/touch-bar.md
@@ -2,7 +2,7 @@

 > Create TouchBar layouts for native macOS applications

-Process: [Main](../tutorial/application-architecture.md#main-and-renderer-processes)
+Process: [Main](../glossary.md#main-process)

 ### `new TouchBar(options)`

--- a/docs/api/tray.md
+++ b/docs/api/tray.md
@@ -52,12 +52,12 @@ app.whenReady().then(() => {
  appIcon.setContextMenu(contextMenu)
 })
 ```
+
 * On Windows it is recommended to use `ICO` icons to get best visual effects.

 If you want to keep exact same behaviors on all platforms, you should not
 rely on the `click` event and always attach a context menu to the tray icon.

-
 ### `new Tray(image, [guid])`

 * `image` ([NativeImage](native-image.md) | String)
--- a/docs/api/web-contents.md
+++ b/docs/api/web-contents.md
@@ -42,7 +42,8 @@ returns `null`.

 * `id` Integer

-Returns `WebContents` - A WebContents instance with the given ID.
+Returns `WebContents` | undefined - A WebContents instance with the given ID, or
+`undefined` if there is no WebContents associated with the given ID.

 ## Class: WebContents

@@ -70,7 +71,7 @@ Returns:
 * `frameRoutingId` Integer

 This event is like `did-finish-load` but emitted when the load failed.
-The full list of error codes and their meaning is available [here](https://code.google.com/p/chromium/codesearch#chromium/src/net/base/net_error_list.h).
+The full list of error codes and their meaning is available [here](https://source.chromium.org/chromium/chromium/src/+/master:net/base/net_error_list.h).

 #### Event: 'did-fail-provisional-load'

@@ -134,7 +135,7 @@ Returns:

 Emitted when page receives favicon urls.

-#### Event: 'new-window'
+#### Event: 'new-window' _Deprecated_

 Returns:

@@ -155,6 +156,8 @@ Returns:
  be set. If no post data is to be sent, the value will be `null`. Only defined
  when the window is being created by a form that set `target=_blank`.

+Deprecated in favor of [`webContents.setWindowOpenHandler`](web-contents.md#contentssetwindowopenhandlerhandler).
+
 Emitted when the page requests to open a new window for a `url`. It could be
 requested by `window.open` or an external link like `<a target='_blank'>`.

@@ -189,6 +192,39 @@ myBrowserWindow.webContents.on('new-window', (event, url, frameName, disposition
 })
 ```

+#### Event: 'did-create-window'
+
+Returns:
+* `window` BrowserWindow
+* `details` Object
+    * `url` String - URL for the created window.
+    * `frameName` String - Name given to the created window in the
+      `window.open()` call.
+    * `options` BrowserWindowConstructorOptions - The options used to create the
+      BrowserWindow. They are merged in increasing precedence: options inherited
+      from the parent, parsed options from the `features` string from
+      `window.open()`, and options given by
+      [`webContents.setWindowOpenHandler`](web-contents.md#contentssetwindowopenhandlerhandler).
+      Unrecognized options are not filtered out.
+    * `additionalFeatures` String[] - The non-standard features (features not
+      handled Chromium or Electron) _Deprecated_
+    * `referrer` [Referrer](structures/referrer.md) - The referrer that will be
+      passed to the new window. May or may not result in the `Referer` header
+      being sent, depending on the referrer policy.
+    * `postBody` [PostBody](structures/post-body.md) (optional) - The post data
+      that will be sent to the new window, along with the appropriate headers
+      that will be set. If no post data is to be sent, the value will be `null`.
+      Only defined when the window is being created by a form that set
+      `target=_blank`.
+    * `disposition` String - Can be `default`, `foreground-tab`,
+      `background-tab`, `new-window`, `save-to-disk` and `other`.
+
+Emitted _after_ successful creation of a window via `window.open` in the renderer.
+Not emitted if the creation of the window is canceled from
+[`webContents.setWindowOpenHandler`](web-contents.md#contentssetwindowopenhandlerhandler).
+
+See [`window.open()`](window-open.md) for more details and how to use this in conjunction with `webContents.setWindowOpenHandler`.
+
 #### Event: 'will-navigate'

 Returns:
@@ -219,7 +255,7 @@ Returns:
 * `frameProcessId` Integer
 * `frameRoutingId` Integer

-Emitted when any frame (including main) starts navigating. `isInplace` will be
+Emitted when any frame (including main) starts navigating. `isInPlace` will be
 `true` for in-page navigations.

 #### Event: 'will-redirect'
@@ -364,7 +400,7 @@ 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 disappears.  This is normally
@@ -438,6 +474,7 @@ Emitted when the window leaves a full-screen state triggered by HTML API.
 #### Event: 'zoom-changed'

 Returns:
+
 * `event` Event
 * `zoomDirection` String - Can be `in` or `out`.

@@ -784,7 +821,7 @@ Returns:
 Emitted when `desktopCapturer.getSources()` is called in the renderer process.
 Calling `event.preventDefault()` will make it return empty sources.

-#### Event: 'remote-require'
+#### Event: 'remote-require' _Deprecated_

 Returns:

@@ -795,7 +832,7 @@ Emitted when `remote.require()` is called in the renderer process.
 Calling `event.preventDefault()` will prevent the module from being returned.
 Custom value can be returned by setting `event.returnValue`.

-#### Event: 'remote-get-global'
+#### Event: 'remote-get-global' _Deprecated_

 Returns:

@@ -806,7 +843,7 @@ Emitted when `remote.getGlobal()` is called in the renderer process.
 Calling `event.preventDefault()` will prevent the global from being returned.
 Custom value can be returned by setting `event.returnValue`.

-#### Event: 'remote-get-builtin'
+#### Event: 'remote-get-builtin' _Deprecated_

 Returns:

@@ -817,7 +854,7 @@ Emitted when `remote.getBuiltin()` is called in the renderer process.
 Calling `event.preventDefault()` will prevent the module from being returned.
 Custom value can be returned by setting `event.returnValue`.

-#### Event: 'remote-get-current-window'
+#### Event: 'remote-get-current-window' _Deprecated_

 Returns:

@@ -827,7 +864,7 @@ Emitted when `remote.getCurrentWindow()` is called in the renderer process.
 Calling `event.preventDefault()` will prevent the object from being returned.
 Custom value can be returned by setting `event.returnValue`.

-#### Event: 'remote-get-current-web-contents'
+#### Event: 'remote-get-current-web-contents' _Deprecated_

 Returns:

@@ -837,6 +874,19 @@ Emitted when `remote.getCurrentWebContents()` is called in the renderer process.
 Calling `event.preventDefault()` will prevent the object from being returned.
 Custom value can be returned by setting `event.returnValue`.

+#### Event: 'preferred-size-changed'
+
+Returns:
+
+* `event` Event
+* `preferredSize` [Size](structures/size.md) - The minimum size needed to
+  contain the layout of the document—without requiring scrolling.
+
+Emitted when the `WebContents` preferred size has changed.
+
+This event will only be emitted when `enablePreferredSizeMode` is set to `true`
+in `webPreferences`.
+
 ### Instance Methods

 #### `contents.loadURL(url[, options])`
@@ -846,7 +896,7 @@ Custom value can be returned by setting `event.returnValue`.
  * `httpReferrer` (String | [Referrer](structures/referrer.md)) (optional) - An HTTP Referrer url.
  * `userAgent` String (optional) - A user agent originating the request.
  * `extraHeaders` String (optional) - Extra headers separated by "\n".
-  * `postData` ([UploadRawData[]](structures/upload-raw-data.md) | [UploadFile[]](structures/upload-file.md) | [UploadBlob[]](structures/upload-blob.md)) (optional)
+  * `postData` ([UploadRawData[]](structures/upload-raw-data.md) | [UploadFile[]](structures/upload-file.md)) (optional)
  * `baseURLForDataURL` String (optional) - Base url (with trailing path separator) for files to be loaded by the data url. This is needed only if the specified `url` is a data url and needs to load other files.

 Returns `Promise<void>` - the promise will resolve when the page has finished loading
@@ -998,6 +1048,34 @@ Navigates to the specified offset from the "current entry".

 Returns `Boolean` - Whether the renderer process has crashed.

+#### `contents.forcefullyCrashRenderer()`
+
+Forcefully terminates the renderer process that is currently hosting this
+`webContents`. This will cause the `render-process-gone` event to be emitted
+with the `reason=killed || reason=crashed`. Please note that some webContents share renderer
+processes and therefore calling this method may also crash the host process
+for other webContents as well.
+
+Calling `reload()` immediately after calling this
+method will force the reload to occur in a new process. This should be used
+when this process is unstable or unusable, for instance in order to recover
+from the `unresponsive` event.
+
+```js
+contents.on('unresponsive', async () => {
+  const { response } = await dialog.showMessageBox({
+    message: 'App X has become unresponsive',
+    title: 'Do you want to try forcefully reloading the app?',
+    buttons: ['OK', 'Cancel'],
+    cancelId: 1
+  })
+  if (response === 0) {
+    contents.forcefullyCrashRenderer()
+    contents.reload()
+  }
+})
+```
+
 #### `contents.setUserAgent(userAgent)`

 * `userAgent` String
@@ -1081,6 +1159,22 @@ Works like `executeJavaScript` but evaluates `scripts` in an isolated context.

 Ignore application menu shortcuts while this web contents is focused.

+#### `contents.setWindowOpenHandler(handler)`
+
+* `handler` Function<{action: 'deny'} | {action: 'allow', overrideBrowserWindowOptions?: BrowserWindowConstructorOptions}>
+  * `details` Object
+    * `url` String - The _resolved_ version of the URL passed to `window.open()`. e.g. opening a window with `window.open('foo')` will yield something like `https://the-origin/the/current/path/foo`.
+    * `frameName` String - Name of the window provided in `window.open()`
+    * `features` String - Comma separated list of window features provided to `window.open()`.
+  Returns `{action: 'deny'} | {action: 'allow', overrideBrowserWindowOptions?: BrowserWindowConstructorOptions}` - `deny` cancels the creation of the new
+  window. `allow` will allow the new window to be created. Specifying `overrideBrowserWindowOptions` allows customization of the created window.
+  Returning an unrecognized value such as a null, undefined, or an object
+  without a recognized 'action' value will result in a console error and have
+  the same effect as returning `{action: 'deny'}`.
+
+Called before creating a window when `window.open()` is called from the
+renderer. See [`window.open()`](window-open.md) for more details and how to use this in conjunction with `did-create-window`.
+
 #### `contents.setAudioMuted(muted)`

 * `muted` Boolean
@@ -1117,6 +1211,10 @@ increment above or below represents zooming 20% larger or smaller to default
 limits of 300% and 50% of original size, respectively. The formula for this is
 `scale := 1.2 ^ level`.

+> **NOTE**: The zoom policy at the Chromium level is same-origin, meaning that the
+> zoom level for a specific domain propagates across all instances of windows with
+> the same domain. Differentiating the window URLs will make zoom work per-window.
+
 #### `contents.getZoomLevel()`

 Returns `Number` - the current zoom level.
@@ -1208,12 +1306,6 @@ Inserts `text` to the focused element.
    defaults to `false`.
  * `matchCase` Boolean (optional) - Whether search should be case-sensitive,
    defaults to `false`.
-  * `wordStart` Boolean (optional) - Whether to look only at the start of words.
-    defaults to `false`.
-  * `medialCapitalAsWordStart` Boolean (optional) - When combined with `wordStart`,
-    accepts a match in the middle of a word if the match begins with an
-    uppercase letter followed by a lowercase or non-letter.
-    Accepts several other intra-word matches, defaults to `false`.

 Returns `Integer` - The request id used for the request.

@@ -1296,9 +1388,9 @@ 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.
@@ -1324,10 +1416,10 @@ Example usage:
 const options = {
  silent: true,
  deviceName: 'My-Printer',
-  pageRanges: {
+  pageRanges: [{
    from: 0,
    to: 1
-  }
+  }]
 }
 win.webContents.print(options, (success, errorType) => {
  if (!success) console.log(errorType)
@@ -1345,8 +1437,8 @@ 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 - zero-based index of the first page to print.
-    * `to` Number - zero-based index of 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.
@@ -1453,7 +1545,7 @@ An example of showing devtools in a `<webview>` tag:
  <webview id="browser" src="https://github.com"></webview>
  <webview id="devtools" src="about:blank"></webview>
  <script>
-    const { webContents } = require('electron').remote
+    const { ipcRenderer } = require('electron')
    const emittedOnce = (element, eventName) => new Promise(resolve => {
      element.addEventListener(eventName, event => resolve(event), { once: true })
    })
@@ -1462,16 +1554,26 @@ An example of showing devtools in a `<webview>` tag:
    const browserReady = emittedOnce(browserView, 'dom-ready')
    const devtoolsReady = emittedOnce(devtoolsView, 'dom-ready')
    Promise.all([browserReady, devtoolsReady]).then(() => {
-      const browser = webContents.fromId(browserView.getWebContentsId())
-      const devtools = webContents.fromId(devtoolsView.getWebContentsId())
-      browser.setDevToolsWebContents(devtools)
-      browser.openDevTools()
+      const targetId = browserView.getWebContentsId()
+      const devtoolsId = devtoolsView.getWebContentsId()
+      ipcRenderer.send('open-devtools', targetId, devtoolsId)
    })
  </script>
 </body>
 </html>
 ```

+```js
+// Main process
+const { ipcMain, webContents } = require('electron')
+ipcMain.on('open-devtools', (event, targetContentsId, devtoolsContentsId) => {
+  const target = webContents.fromId(targetContentsId)
+  const devtools = webContents.fromId(devtoolsContentsId)
+  target.setDevToolsWebContents(devtools)
+  target.openDevTools()
+})
+```
+
 An example of showing devtools in a `BrowserWindow`:

 ```js
@@ -1556,8 +1658,7 @@ 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.
@@ -1593,7 +1694,9 @@ 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[]

@@ -1603,9 +1706,8 @@ 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.
@@ -1641,6 +1743,7 @@ process by accessing the `ports` property of the emitted event. When they
 arrive in the renderer, they will be native DOM `MessagePort` objects.

 For example:
+
 ```js
 // Main process
 const { port1, port2 } = new MessageChannelMain()
@@ -1767,7 +1870,7 @@ 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()`

@@ -1865,7 +1968,7 @@ 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.

@@ -1901,3 +2004,7 @@ A [`Debugger`](debugger.md) instance for this webContents.

 A `Boolean` property that determines whether or not this WebContents will throttle animations and timers
 when the page becomes backgrounded. This also affects the Page Visibility API.
+
+#### `contents.mainFrame` _Readonly_
+
+A [`WebFrameMain`](web-frame-main.md) property that represents the top frame of the page's frame hierarchy.
--- a/docs/api/web-frame-main.md
+++ b/docs/api/web-frame-main.md
@@ -0,0 +1,195 @@
+# webFrameMain
+
+> Control web pages and iframes.
+
+Process: [Main](../glossary.md#main-process)
+
+The `webFrameMain` module can be used to lookup frames across existing
+[`WebContents`](web-contents.md) instances. Navigation events are the common
+use case.
+
+```javascript
+const { BrowserWindow, webFrameMain } = require('electron')
+
+const win = new BrowserWindow({ width: 800, height: 1500 })
+win.loadURL('https://twitter.com')
+
+win.webContents.on(
+  'did-frame-navigate',
+  (event, url, isMainFrame, frameProcessId, frameRoutingId) => {
+    const frame = webFrameMain.fromId(frameProcessId, frameRoutingId)
+    if (frame) {
+      const code = 'document.body.innerHTML = document.body.innerHTML.replaceAll("heck", "h*ck")'
+      frame.executeJavaScript(code)
+    }
+  }
+)
+```
+
+You can also access frames of existing pages by using the `mainFrame` property
+of [`WebContents`](web-contents.md).
+
+```javascript
+const { BrowserWindow } = require('electron')
+
+async function main () {
+  const win = new BrowserWindow({ width: 800, height: 600 })
+  await win.loadURL('https://reddit.com')
+
+  const youtubeEmbeds = win.webContents.mainFrame.frames.filter((frame) => {
+    try {
+      const url = new URL(frame.url)
+      return url.host === 'www.youtube.com'
+    } catch {
+      return false
+    }
+  })
+
+  console.log(youtubeEmbeds)
+}
+
+main()
+```
+
+## Methods
+
+These methods can be accessed from the `webFrameMain` module:
+
+### `webFrameMain.fromId(processId, routingId)`
+
+* `processId` Integer - An `Integer` representing the internal ID of the process which owns the frame.
+* `routingId` Integer - An `Integer` representing the unique frame ID in the
+  current renderer process. Routing IDs can be retrieved from `WebFrameMain`
+  instances (`frame.routingId`) and are also passed by frame
+  specific `WebContents` navigation events (e.g. `did-frame-navigate`).
+
+Returns `WebFrameMain | undefined` - A frame with the given process and routing IDs,
+or `undefined` if there is no WebFrameMain associated with the given IDs.
+
+## Class: WebFrameMain
+
+Process: [Main](../glossary.md#main-process)
+
+### Instance Methods
+
+#### `frame.executeJavaScript(code[, userGesture])`
+
+* `code` String
+* `userGesture` Boolean (optional) - Default is `false`.
+
+Returns `Promise<unknown>` - A promise that resolves with the result of the executed
+code or is rejected if execution throws or results in a rejected promise.
+
+Evaluates `code` in page.
+
+In the browser window some HTML APIs like `requestFullScreen` can only be
+invoked by a gesture from the user. Setting `userGesture` to `true` will remove
+this limitation.
+
+#### `frame.executeJavaScriptInIsolatedWorld(worldId, code[, userGesture])`
+
+* `worldId` Integer - The ID of the world to run the javascript in, `0` is the default world, `999` is the world used by Electron's `contextIsolation` feature.  You can provide any integer here.
+* `code` String
+* `userGesture` Boolean (optional) - Default is `false`.
+
+Returns `Promise<unknown>` - A promise that resolves with the result of the executed
+code or is rejected if execution throws or results in a rejected promise.
+
+Works like `executeJavaScript` but evaluates `scripts` in an isolated context.
+
+#### `frame.reload()`
+
+Returns `boolean` - Whether the reload was initiated successfully. Only results in `false` when the frame has no history.
+
+#### `frame.send(channel, ...args)`
+
+* `channel` String
+* `...args` any[]
+
+Send an asynchronous message to the renderer process via `channel`, along with
+arguments. Arguments will be serialized with the [Structured Clone
+Algorithm][SCA], just like [`postMessage`][], so prototype chains will not be
+included. Sending Functions, Promises, Symbols, WeakMaps, or WeakSets will
+throw an exception.
+
+The renderer process can handle the message by listening to `channel` with the
+[`ipcRenderer`](ipc-renderer.md) module.
+
+#### `frame.postMessage(channel, message, [transfer])`
+
+* `channel` String
+* `message` any
+* `transfer` MessagePortMain[] (optional)
+
+Send a message to the renderer process, optionally transferring ownership of
+zero or more [`MessagePortMain`][] objects.
+
+The transferred `MessagePortMain` objects will be available in the renderer
+process by accessing the `ports` property of the emitted event. When they
+arrive in the renderer, they will be native DOM `MessagePort` objects.
+
+For example:
+
+```js
+// Main process
+const { port1, port2 } = new MessageChannelMain()
+webContents.mainFrame.postMessage('port', { message: 'hello' }, [port1])
+
+// Renderer process
+ipcRenderer.on('port', (e, msg) => {
+  const [port] = e.ports
+  // ...
+})
+```
+
+### Instance Properties
+
+#### `frame.url` _Readonly_
+
+A `string` representing the current URL of the frame.
+
+#### `frame.top` _Readonly_
+
+A `WebFrameMain | null` representing top frame in the frame hierarchy to which `frame`
+belongs.
+
+#### `frame.parent` _Readonly_
+
+A `WebFrameMain | null` representing parent frame of `frame`, the property would be
+`null` if `frame` is the top frame in the frame hierarchy.
+
+#### `frame.frames` _Readonly_
+
+A `WebFrameMain[]` collection containing the direct descendents of `frame`.
+
+#### `frame.framesInSubtree` _Readonly_
+
+A `WebFrameMain[]` collection containing every frame in the subtree of `frame`,
+including itself. This can be useful when traversing through all frames.
+
+#### `frame.frameTreeNodeId` _Readonly_
+
+An `Integer` representing the id of the frame's internal FrameTreeNode
+instance. This id is browser-global and uniquely identifies a frame that hosts
+content. The identifier is fixed at the creation of the frame and stays
+constant for the lifetime of the frame. When the frame is removed, the id is
+not used again.
+
+#### `frame.name` _Readonly_
+
+A `String` representing the frame name.
+
+#### `frame.osProcessId` _Readonly_
+
+An `Integer` representing the operating system `pid` of the process which owns this frame.
+
+#### `frame.processId` _Readonly_
+
+An `Integer` representing the Chromium internal `pid` of the process which owns this frame.
+This is not the same as the OS process ID; to read that use `frame.osProcessId`.
+
+#### `frame.routingId` _Readonly_
+
+An `Integer` representing the unique frame id in the current renderer process.
+Distinct `WebFrameMain` instances that refer to the same underlying frame will
+have the same `routingId`.
--- a/docs/api/web-frame.md
+++ b/docs/api/web-frame.md
@@ -41,6 +41,10 @@ Changes the zoom level to the specified level. The original size is 0 and each
 increment above or below represents zooming 20% larger or smaller to default
 limits of 300% and 50% of original size, respectively.

+> **NOTE**: The zoom policy at the Chromium level is same-origin, meaning that the
+> zoom level for a specific domain propagates across all instances of windows with
+> the same domain. Differentiating the window URLs will make zoom work per-window.
+
 ### `webFrame.getZoomLevel()`

 Returns `Number` - The current zoom level.
@@ -171,6 +175,7 @@ reject and the `result` would be `undefined`. This is because Chromium does not
 dispatch errors of isolated worlds to foreign worlds.

 ### `webFrame.setIsolatedWorldInfo(worldId, info)`
+
 * `worldId` Integer - The ID of the world to run the javascript in, `0` is the default world, `999` is the world used by Electrons `contextIsolation` feature. Chrome extensions reserve the range of IDs in `[1 << 20, 1 << 29)`. You can provide any integer here.
 * `info` Object
  * `securityOrigin` String (optional) - Security origin for the isolated world.
@@ -253,6 +258,20 @@ renderer process.

 Returns `WebFrame` - that has the supplied `routingId`, `null` if not found.

+### `webFrame.isWordMisspelled(word)`
+
+* `word` String - The word to be spellchecked.
+
+Returns `Boolean` - True if the word is misspelled according to the built in
+spellchecker, false otherwise. If no dictionary is loaded, always return false.
+
+### `webFrame.getWordSuggestions(word)`
+
+* `word` String - The misspelled word.
+
+Returns `String[]` - A list of suggested words for a given word. If the word
+is spelled correctly, the result will be empty.
+
 ## Properties

 ### `webFrame.top` _Readonly_
--- a/Show More
+++ b/Show More