ToDo: diffs FF129-FF130

[earthlng]

FF130 release date: Sep. 3rd 2024

FF130 release notes
FF130 for developers
FF130 security advisories

---

103 diffs ( 73 new, 17 gone, 13 different )

new in v130.0:

• pref("browser.urlbar.fakespot.featureGate", false); 1905464 - 7f14914

pref("dom.webnotifications.privateBrowsing.enabled", true);

---

ignore

click me for details

==NEW

pref("browser.backup.template.fallback-download.aurora", "https://www.mozilla.org/firefox/channel/desktop/?utm_medium=firefox-desktop&utm_source=backup&utm_campaign=firefox-backup-2024&utm_content=control#developer");
pref("browser.backup.template.fallback-download.beta", "https://www.mozilla.org/firefox/channel/desktop/?utm_medium=firefox-desktop&utm_source=backup&utm_campaign=firefox-backup-2024&utm_content=control#beta");
pref("browser.backup.template.fallback-download.esr", "https://www.mozilla.org/firefox/enterprise/?utm_medium=firefox-desktop&utm_source=backup&utm_campaign=firefox-backup-2024&utm_content=control#download");
pref("browser.backup.template.fallback-download.nightly", "https://www.mozilla.org/firefox/channel/desktop/?utm_medium=firefox-desktop&utm_source=backup&utm_campaign=firefox-backup-2024&utm_content=control#nightly");
pref("browser.backup.template.fallback-download.release", "https://www.mozilla.org/firefox/download/thanks/?s=direct&utm_medium=firefox-desktop&utm_source=backup&utm_campaign=firefox-backup-2024&utm_content=control");
pref("browser.ml.chat.prompts.3", "{\"id\":\"explain\",\"l10nId\":\"genai-prompts-explain\",\"targeting\":\"channel=='nightly'\"}");
pref("browser.ml.chat.shortcuts", true);
pref("browser.ml.chat.shortcuts.custom", false);
pref("browser.ml.chat.shortcuts.longPress", 60000);
pref("browser.ml.modelCacheMaxSizeBytes", 1073741824);
pref("browser.newtabpage.activity-stream.discoverystream.merino-feed-experiment", false);
pref("browser.newtabpage.activity-stream.discoverystream.spocs.startupCache.enabled", true);
pref("browser.newtabpage.activity-stream.discoverystream.thumbsUpDown.locale-thumbs-config", "en-US, en-GB, en-CA");
pref("browser.newtabpage.activity-stream.discoverystream.thumbsUpDown.region-thumbs-config", "");
pref("browser.newtabpage.activity-stream.discoverystream.topicLabels.enabled", true);
pref("browser.newtabpage.activity-stream.discoverystream.topicSelection.hasBeenUpdatedPreviously", false);
pref("browser.newtabpage.activity-stream.discoverystream.topicSelection.locale-topics-config", "en-US, en-GB, en-CA");
pref("browser.newtabpage.activity-stream.discoverystream.topicSelection.onboarding.displayCount", 0);
pref("browser.newtabpage.activity-stream.discoverystream.topicSelection.onboarding.displayTimeout", 0);
pref("browser.newtabpage.activity-stream.discoverystream.topicSelection.onboarding.enabled", false);
pref("browser.newtabpage.activity-stream.discoverystream.topicSelection.onboarding.lastDisplayed", "");
pref("browser.newtabpage.activity-stream.discoverystream.topicSelection.onboarding.maybeDisplay", true);
pref("browser.newtabpage.activity-stream.discoverystream.topicSelection.region-topics-config", "");
pref("browser.newtabpage.activity-stream.discoverystream.topicSelection.selectedTopics", "");
pref("browser.newtabpage.activity-stream.discoverystream.topicSelection.suggestedTopics", "business, arts, government");
pref("browser.newtabpage.activity-stream.discoverystream.topicSelection.topics", "business, arts, food, health, finance, government, sports, tech, travel, education-science, society");
pref("browser.newtabpage.activity-stream.support.url", "https://support.mozilla.org/1/firefox/130.0/WINNT/en-US/new-tab");
pref("browser.startMenu.msixPinnedWhenLastChecked", false);
pref("browser.urlbar.fakespot.minKeywordLength", 4);
pref("browser.urlbar.fakespot.suggestedIndex", -1);
pref("browser.urlbar.suggest.fakespot", true);
pref("dom.details_group.enabled", true);
pref("dom.input.number_and_range_modified_by_mousewheel", false);
pref("dom.ipc.processCount.inference", 1);
pref("dom.media.webcodecs.image-decoder.enabled", false);
pref("dom.navigation.webidl.enabled", false);
pref("dom.popup.experimental", false);
pref("dom.script_loader.navigation_cache", false);
pref("dom.security.credentialmanagement.chooser.testing.enabled", false);
pref("gfx.canvas.remote.use-draw-image-fast-path-d3d", false);
pref("gfx.webrender.frame-builder-thread-local-arena", false);
pref("gfx.webrender.scene-builder-thread-local-arena", false);
pref("gfx.webrender.worker-thread-local-arena", true);
pref("intl.hyphenate-capitalized.af", true);
pref("intl.hyphenate-capitalized.nl", true);
pref("intl.hyphenation-alias.cs-*", "cs");
pref("intl.hyphenation-alias.sk", "cs");
pref("intl.hyphenation-alias.sk-*", "cs");
pref("javascript.options.mem.gc_generational", true);
pref("javascript.options.wasm_experimental_inline_depth_limit", 2);
pref("javascript.options.wasm_experimental_inline_size_limit", 256);
pref("layout.css.stretch-size-keyword.enabled", false);
pref("layout.css.webkit-fill-available.enabled", false);
pref("media.ffmpeg.encoder.quantizer-max", 35);
pref("media.ffmpeg.encoder.quantizer-min", 10);
pref("media.peerconnection.sdp.quirk.duplicate_fingerprint.allowlist", "");
pref("media.rvfc.enabled", false);
pref("media.videocontrols.picture-in-picture.enable-when-switching-tabs.enabled", false);
pref("middlemouse.openNewWindow", false);
pref("network.http.http3.use_nspr_for_io", true);
pref("network.parental_controls_cached_state", false);
pref("network.socket.ip_addr_any.disabled", false);
pref("pdfjs.altTextLearnMoreUrl", "https://support.mozilla.org/1/firefox/%VERSION%/%OS%/%LOCALE%/pdf-alt-text");
pref("pdfjs.enableAltText", false);
pref("pdfjs.enableAltTextModelDownload", true);
pref("pdfjs.enableGuessAltText", true);
pref("pdfjs.enableNewAltTextWhenAddingImage", true);
pref("pdfjs.enableUpdatedAddImage", false);
pref("security.sandbox.cig.prespawn.enabled", false);
pref("webgl.enable-egl-image", true);
pref("widget.windows.allow-external-tab-drag", false);

==REMOVED, RENAMED or HIDDEN

pref("browser.preferences.search", true);
pref("browser.search.widget.inNavBar", false);
pref("dom.w3c_pointer_events.dispatch_click_as_pointer_event", true);
pref("dom.webnotifications.privateBrowsing.enableDespiteLimitations", false);
pref("layout.css.content-visibility.enabled", true);
pref("media.rdd-theora.enabled", true);
pref("media.theora.enabled", true);
pref("network.protocol-handler.external.news", true);
pref("network.protocol-handler.external.nntp", true);
pref("network.protocol-handler.external.snews", true);
pref("network.protocol-handler.warn-external.news", false);
pref("network.protocol-handler.warn-external.nntp", false);
pref("network.protocol-handler.warn-external.snews", false);
pref("pdfjs.enableML", false);
pref("pdfjs.enableStampEditor", true);
pref("security.intermediate_preloading_healer.enabled", true);
pref("security.intermediate_preloading_healer.timer_interval_ms", 300000);

==CHANGED

pref("browser.ml.chat.prompt.prefix", "{\"l10nId\":\"genai-prompt-prefix-selection\"}"); // prev: "I’m on page \"%tabTitle%\" with \"%selection|12000%\" selected. "
pref("browser.ml.chat.prompts.0", "{\"id\":\"summarize\",\"l10nId\":\"genai-prompts-summarize\"}"); // prev: "{\"label\":\"Summarize\",\"value\":\"Please summarize the selection using precise and concise language. Use headers and bulleted lists in the summary, to make it scannable. Maintain the meaning and factual accuracy.\",\"id\":\"summarize\"}"
pref("browser.ml.chat.prompts.1", "{\"id\":\"simplify\",\"l10nId\":\"genai-prompts-simplify\"}"); // prev: "{\"label\":\"Simplify Language\",\"value\":\"Please rewrite the selection in plain, clear language suitable for a general audience without specialized knowledge. Use all of the following tactics: simple vocabulary; short sentences; active voice; headers and bulleted lists for scannability. Maintain meaning and factual accuracy.\",\"id\":\"simplify\"}"
pref("browser.ml.chat.prompts.2", "{\"id\":\"quiz\",\"l10nId\":\"genai-prompts-quiz\",\"targeting\":\"!provider|regExpMatch('gemini')\"}"); // prev: "{\"label\":\"Quiz Me\",\"value\":\"Please quiz me on this selection. Ask me a variety of types of questions, for example multiple choice, true or false, and short answer. Wait for my response before moving on to the next question.\",\"id\":\"quiz\",\"targeting\":\"!provider|regExpMatch('gemini')\"}"
pref("browser.newtabpage.activity-stream.discoverystream.region-weather-config", "US,CA"); // prev: ""
pref("browser.newtabpage.activity-stream.discoverystream.thumbsUpDown.searchTopsitesCompact", true); // prev: false
pref("browser.newtabpage.activity-stream.newtabWallpapers.enabled", true); // prev: false
pref("browser.newtabpage.activity-stream.newtabWallpapers.v2.enabled", true); // prev: false
pref("browser.preferences.experimental", true); // prev: false
pref("dom.media.webcodecs.enabled", true); // prev: false
pref("identity.fxaccounts.commands.remoteTabManagement.enabled", true); // prev: false
pref("media.eme.mfcdm.origin-filter.enabled", 0); // prev: 1
pref("webgl.1.request_es2", false); // prev: true

[earthlng]

some bugzilla tickets

• browser.backup.template.fallback-download.aurora
  Bug 1903117 - Make the download link in the single-file archive work.

• browser.backup.template.fallback-download.beta
  Bug 1903117 - Make the download link in the single-file archive work.

• browser.backup.template.fallback-download.esr
  Bug 1903117 - Make the download link in the single-file archive work.

• browser.backup.template.fallback-download.nightly
  Bug 1903117 - Make the download link in the single-file archive work.

• browser.backup.template.fallback-download.release
  Bug 1903117 - Make the download link in the single-file archive work.

• browser.ml.chat.prompt.prefix
  Bug 1912080 - Chatbot prompt prefix string missing from localization a=pascalc
  Bug 1902449 - Rework chat to support contextual prompts and non-contextmenu entry points
  Bug 1894998 - Add prefs to control chat, provider, prompts

• browser.ml.chat.prompts.0
  Bug 1907350 - Expose genai-settings-chat-title and other chatbot strings for localization
  Bug 1895813 - Add telemetry for chat interactions and state
  Bug 1894998 - Add prefs to control chat, provider, prompts

• browser.ml.chat.prompts.1
  Bug 1907350 - Expose genai-settings-chat-title and other chatbot strings for localization
  Bug 1895813 - Add telemetry for chat interactions and state
  Bug 1894998 - Add prefs to control chat, provider, prompts

• browser.ml.chat.prompts.2
  Bug 1907350 - Expose genai-settings-chat-title and other chatbot strings for localization
  Bug 1895497 - Update chatbot providers and featuregate with more appropriate configuration for initial nightly
  Bug 1895813 - Add telemetry for chat interactions and state
  Bug 1894998 - Add prefs to control chat, provider, prompts

• browser.ml.chat.prompts.3
  Bug 1907350 - Expose genai-settings-chat-title and other chatbot strings for localization

• browser.ml.chat.shortcuts
  Bug 1911748 - Chatbot: too much insistent -> shortcuts Icon every where ( when using the touchpad ) a=dmeehan
  Bug 1910005 - Expose chat shortcuts pref as part of experimental subitem
  Bug 1905750 - Display shortcuts on text selection
  Bug 1905750 - Stub actors and panel to display content-area shortcuts on text selection

• browser.ml.chat.shortcuts.custom
  Bug 1910005 - Expose chat shortcuts pref as part of experimental subitem
  Bug 1905750 - Display shortcuts on text selection

• browser.ml.chat.shortcuts.longPress
  Bug 1911748 - Chatbot: too much insistent -> shortcuts Icon every where ( when using the touchpad ) a=dmeehan

• browser.ml.modelCacheMaxSizeBytes
  Bug 1910116 - Fix ML IndexedDB Cache Size Estimation to Match Actual Data Size

• browser.newtabpage.activity-stream.discoverystream.merino-feed-experiment
  Bug 1908469 - Newtab pass experiment data to Merino recommendations request.

• browser.newtabpage.activity-stream.discoverystream.region-weather-config
  Bug 1909520 - Enable weather location search/locale prefs by default
  Bug 1899848 - Home and newtab turn on weather widget for nightly
  Bug 1896681 - Home and newtab adding region control for weather widget
  Bug 1896681 - Home and newtab adding region control for weather widget a=pascalc

• browser.newtabpage.activity-stream.discoverystream.thumbsUpDown.locale-thumbs-config
  Bug 1909900 - Add region controls to thumbs up and down buttons

• browser.newtabpage.activity-stream.discoverystream.thumbsUpDown.region-thumbs-config
  Bug 1909900 - Add region controls to thumbs up and down buttons

• browser.newtabpage.activity-stream.discoverystream.thumbsUpDown.searchTopsitesCompact
  Bug 1909900 - Add region controls to thumbs up and down buttons
  Bug 1908696 - Update Thumbs up/down pref to default to true for Nightly
  Bug 1905319 - Adjust new tab page elements spacing to be more consistent

• browser.newtabpage.activity-stream.discoverystream.topicLabels.enabled
  Bug 1911344 - Enable topic selection and labels in nightly & beta.
  Bug 1910757 – Enable topic labels by default.
  Bug 1904657 - Add topic labels to Pocket cards.

• browser.newtabpage.activity-stream.discoverystream.topicSelection.locale-topics-config
  Bug 1911344 - Enable topic selection and labels in nightly & beta.
  Bug 1908670 - Home and newtab topic personalization needs region controls

• browser.newtabpage.activity-stream.discoverystream.topicSelection.onboarding.enabled
  Bug 1911344 - Enable topic selection and labels in nightly & beta.

• browser.newtabpage.activity-stream.discoverystream.topicSelection.region-topics-config
  Bug 1911344 - Enable topic selection and labels in nightly & beta.
  Bug 1908670 - Home and newtab topic personalization needs region controls

• browser.newtabpage.activity-stream.discoverystream.topicSelection.suggestedTopics
  Bug 1908670 - Home and newtab topic personalization needs region controls

• browser.newtabpage.activity-stream.discoverystream.topicSelection.topics
  Bug 1908670 - Home and newtab topic personalization needs region controls

• browser.newtabpage.activity-stream.newtabWallpapers.enabled
  Bug 1910776 - Newtab flip wallpapers pref on
  Bug 1900137 - Home and newtab turn on wallpaper for nightly
  Bug 1881588 - Add Wallpaper component

• browser.newtabpage.activity-stream.newtabWallpapers.v2.enabled
  Bug 1910776 - Newtab flip wallpapers pref on
  Bug 1899782 - flip wallpaper v2 pref for nightly
  Bug 1898818 - Home and newtab fixes so newtab with a wallpaper looks good in both light and dark mode

• browser.preferences.experimental
  Bug 1908785 - show Firefox Labs on non-Nightly,

• browser.preferences.search
  Bug 1908785 - driveby: remove browser.preferences.search as there is no reason to disable search in settings,

• browser.search.widget.inNavBar
  Bug 1863530 - Remove browser.search.widget.inNavBar pref.

• browser.startMenu.msixPinnedWhenLastChecked
  Bug 1900035 - Added Windows start menu pinning to MSIX set-to-default and taskbar pinning scenarios

• browser.urlbar.fakespot.featureGate
  Bug 1905464 - Implement Fakespot suggestions result menu.

• browser.urlbar.fakespot.minKeywordLength
  Bug 1909563 - Set the default Fakespot min keyword length threshold to 4.
  Bug 1905464 - Implement Fakespot suggestions result menu.

• browser.urlbar.fakespot.suggestedIndex
  Bug 1909565 - Move Fakespot suggestions to the bottom of the Firefox Suggest section,

• browser.urlbar.suggest.fakespot
  Bug 1905464 - Implement Fakespot suggestions result menu.

• dom.details_group.enabled
  Bug 1909613 - Enable <details name=''> everywhere,
  Bug 1856460, add support for HTMLDetailsElement.name,

• dom.input.number_and_range_modified_by_mousewheel
  Bug 1741469 part 3: Add an off-by-default pref to control whether input type="number"/"range" fields are modified when mousewheel-scrolled.

• dom.ipc.processCount.inference
  Bug 1905599 - Add a new remote type inference

• dom.media.webcodecs.enabled
  Bug 1908572 - Enable WebCodecs in Firefox Desktop

• dom.media.webcodecs.image-decoder.enabled
  Bug 1749048 - Part 2. Implement WebCodecs image decoding API.

• dom.navigation.webidl.enabled
  Bug 1895254 - Prototype the Navigation API WebIDL.

• dom.popup.experimental
  Bug 1896672 - Check user activation for openBlocked popup blocker state

• dom.script_loader.navigation_cache
  Bug 1896709 - Part 7: Add pref for nagivation cache.

• dom.security.credentialmanagement.chooser.testing.enabled
  Bug 1892021, part 6 - Fix mozilla-only lightweight FedCM WPT to avoid custom service calls -

• dom.w3c_pointer_events.dispatch_click_as_pointer_event
  Bug 1904279 - Get rid of dom.w3c_pointer_events.dispatch_click_as_pointer_event pref
  Bug 1675847 - part 3: Make ePointerClick event dispatchers and handlers use WidgetPointerEvent

• dom.webnotifications.privateBrowsing.enabled
  Bug 1906338: Rename PBM notifications pref and enable it by default.r=saschanaz DONTBUILD

• dom.webnotifications.privateBrowsing.enableDespiteLimitations
  Bug 1906338: Rename PBM notifications pref and enable it by default.r=saschanaz DONTBUILD

• gfx.canvas.remote.use-draw-image-fast-path-d3d
  Bug 1911237 - Disable SurfaceDescriptorD3D10 fast path of CanvasRenderingContext2D::DrawImage() with remote Canvas2d

• gfx.webrender.frame-builder-thread-local-arena
  Bug 1909873 - Allow enabling/disabling thread-local arenas for various webrender threads.

• gfx.webrender.scene-builder-thread-local-arena
  Bug 1909873 - Allow enabling/disabling thread-local arenas for various webrender threads.

• gfx.webrender.worker-thread-local-arena
  Bug 1909873 - Allow enabling/disabling thread-local arenas for various webrender threads.

• identity.fxaccounts.commands.remoteTabManagement.enabled
  Bug 1905974: Flip closing tabs remotely to default on
  Bug 1885064 - Ability to send and receive close remote tab pushes

• intl.hyphenate-capitalized.af
  Bug 1906346 - Allow hyphenation of capitalized words in Afrikaans and Dutch, because of the frequency of long words.

• intl.hyphenate-capitalized.nl
  Bug 1906346 - Allow hyphenation of capitalized words in Afrikaans and Dutch, because of the frequency of long words.

• intl.hyphenation-alias.cs-*
  Bug 1908931 - Add hyphenation patterns for Czech & Slovak.

• intl.hyphenation-alias.sk
  Bug 1908931 - Add hyphenation patterns for Czech & Slovak.

• intl.hyphenation-alias.sk-*
  Bug 1908931 - Add hyphenation patterns for Czech & Slovak.

• javascript.options.mem.gc_generational
  Bug 1906255 - Allow disabling the nursery via gcparam

• javascript.options.wasm_experimental_inline_depth_limit
  Bug 1868521 - wasm: Support direct call inlining in Ion when lazy tiering.

• javascript.options.wasm_experimental_inline_size_limit
  Bug 1868521 - wasm: Support direct call inlining in Ion when lazy tiering.

• layout.css.content-visibility.enabled
  Bug 1789166 - Use content-visibility rather than display: none to hide <details> content.

• layout.css.stretch-size-keyword.enabled
  Bug 1909773 part 3: Add off-by-default support for the CSS 'stretch' sizing keyword, just matching the behavior of '-moz-available' for now.

• layout.css.webkit-fill-available.enabled
  Bug 1909773 part 4: Add support for '-webkit-fill-available' as an alias for the CSS 'stretch' behavior (off-by-default for now).

• media.eme.mfcdm.origin-filter.enabled
  Bug 1911283 - turn off the pref.
  Bug 1896948 - restrict MFCDM support based on origin.

• media.ffmpeg.encoder.quantizer-max
  Bug 1909369 - Adjust default max quantizer values for FFmpegVideoEncoder
  Bug 1909369 - Allow setting max and min quantizer values in pref
  Bug 1909369 - Adjust default min and max quantizer values for FFmpegVideoEncoder

• media.ffmpeg.encoder.quantizer-min
  Bug 1909369 - Adjust default max quantizer values for FFmpegVideoEncoder
  Bug 1909369 - Allow setting max and min quantizer values in pref
  Bug 1909369 - Adjust default min and max quantizer values for FFmpegVideoEncoder

• media.peerconnection.sdp.quirk.duplicate_fingerprint.allowlist
  Bug 1876865 - Add media.peerconnection.sdp.quirk.duplicate_fingerprint.allowlist.

• media.rdd-theora.enabled
  Bug 1890370 - Remove libtheora integration.

• media.rvfc.enabled
  Bug 1800882 - Implement HTMLVideoElement.requestVideoFrameCallback.

• media.theora.enabled
  Bug 1890370 - Remove libtheora integration.

• media.videocontrols.picture-in-picture.enable-when-switching-tabs.enabled
  Bug 1910005 - Expose chat shortcuts pref as part of experimental subitem
  Bug 1647800 - Picture-in-Picture: auto-toggle on tab switch.

• middlemouse.openNewWindow
  Bug 1081542 - Part 5: Move middlemouse.openNewWindow to StaticPrefList.yaml to access it from nsWindowWatcher::IsWindowOpenLocationModified.

• network.http.http3.use_nspr_for_io
  Bug 1910360 - use quinn-udp instead of NSPR for QUIC I/O on Nightly
  Bug 1901295 - Use quinn-udp instead of NSPR for QUIC UDP I/O

• network.parental_controls_cached_state
  Bug 1893948 - Avoid sync IO in parental controls service (provide threadsafe + lazily-looked-up implementation)

• network.protocol-handler.external.news
  Bug 1908496 - adjust defaults for news/snews/nntp protocols, a=pascalc

• network.protocol-handler.external.nntp
  Bug 1908496 - adjust defaults for news/snews/nntp protocols, a=pascalc

• network.protocol-handler.external.snews
  Bug 1908496 - adjust defaults for news/snews/nntp protocols, a=pascalc

• network.protocol-handler.warn-external.news
  Bug 1908496 - adjust defaults for news/snews/nntp protocols, a=pascalc

• network.protocol-handler.warn-external.nntp
  Bug 1908496 - adjust defaults for news/snews/nntp protocols, a=pascalc

• network.protocol-handler.warn-external.snews
  Bug 1908496 - adjust defaults for news/snews/nntp protocols, a=pascalc

• network.socket.ip_addr_any.disabled
  Bug 1889130 - block http requests on 0.0.0.0 address. a=RyanVM

• pdfjs.enableML
  Bug 1905864 - Generate a PDF.js default-prefs file that can be used directly in mozilla-central.

• pdfjs.enableStampEditor
  Bug 1905864 - Generate a PDF.js default-prefs file that can be used directly in mozilla-central.
  Bug 1859806 - Enable pdfjs.enableStampEditor in 120
  Bug 1859365 - Register pdfjs.enableStampEditor with Nimbus
  Bug 1843054 - Enable pdfjs.enableStampEditor on Release
  Bug 1843052 - Enable adding images in a pdf in nightly and early beta

• security.intermediate_preloading_healer.enabled
  Bug 1842872 - stop caching intermediate certificates from TLS connections

• security.intermediate_preloading_healer.timer_interval_ms
  Bug 1842872 - stop caching intermediate certificates from TLS connections

• security.sandbox.cig.prespawn.enabled
  Bug 1911240 - Restore prespawn CIG in Nightly.
  Bug 1909652 - Temporarily disable pre-spawn CIG in Nightly.
  Bug 1909652 - Put prespawn CIG behind a pref.

• webgl.1.request_es2
  Bug 1908740 - Enable ES3 webgl1 on Windows.
  Bug 1906155 - Add pref webgl.1.request_es2:true.

• webgl.enable-egl-image
  Bug 1898238 - Use SharedSurface_EGLImage for out-of-process webgl and accelerated canvas on Android.

• widget.windows.allow-external-tab-drag
  Bug 1598915 - [2/2] Ignore external drag-and-drop responses for Fx tabs