ToDo: diffs FF120-FF121

[earthlng]

FF121 release date: Dec. 19th 2023

FF121 release notes
FF121 for developers
FF121 security advisories

---

80 diffs ( 51 new, 13 gone, 16 different )

new in v121.0:

• FYI
  • pref("privacy.exposeContentTitleInWindow", true);
  • pref("privacy.exposeContentTitleInWindow.pbm", true);
  • see 41988#note_2971226 + 42279 + 1849186 + CVE-2023-6872
• FYI
  • pref("browser.contentanalysis.enabled", false); 1811076
  • 1871166 [meta] Integrate Content Analysis SDK for data loss prevention
  • https://github.com/chromium/content_analysis_sdk

    • DLP agents are background processes on managed computers that allow enterprises to monitor locally running applications for data exfiltration events. They can allow/block these activities based on customer defined DLP policies.

---

ignore

click me for details

==NEW

pref("browser.contentanalysis.is_per_user", true);
pref("browser.contentanalysis.pipe_path_name", "path_user");
pref("browser.contentanalysis.silent_notifications", false);
pref("browser.firefox-view.search.enabled", false);
pref("browser.mailto.dualPrompt", false);
pref("browser.mailto.dualPrompt.os", false);
pref("browser.mailto.prompt.os", true);
pref("browser.shell.customProtocolsRegistered", false);
pref("browser.urlbar.quicksuggest.contextualOptIn", false);
pref("browser.urlbar.quicksuggest.contextualOptIn.sayHello", false);
pref("browser.urlbar.quicksuggest.contextualOptIn.topPosition", true);
pref("cookiebanners.bannerClicking.executeOnce", true);
pref("devtools.debugger.pause-on-debugger-statement", true);
pref("devtools.performance.recording.power.external-url", "");
pref("dom.element.customstateset.enabled", false);
pref("dom.element.invokers.enabled", false);
pref("dom.select.showPicker.enabled", false);
pref("dom.webgpu.hal-labels", false);
pref("extensions.abuseReport.amoFormEnabled", true);
pref("extensions.abuseReport.amoFormURL", "https://addons.mozilla.org/%LOCALE%/%APP%/feedback/addon/%addonID%/");
pref("layout.css.modern-range-pseudos.enabled", false);
pref("layout.css.scroll-anchoring.absolute-update", true);
pref("layout.css.text-align.justify-only-after-last-tab", true);
pref("layout.css.text-indent-keywords.enabled", true);
pref("media.eme.playready.istypesupportedex", false);
pref("media.eme.widevine.experiment.enabled", false);
pref("media.gmp-widevinecdm-l1.enabled", false);
pref("media.gmp-widevinecdm-l1.forceInstall", false);
pref("media.gmp-widevinecdm-l1.visible", false);
pref("media.webrtc.capture.screen.allow-wgc", false);
pref("media.webrtc.capture.wgc.allow-zero-hertz", false);
pref("media.webrtc.capture.window.allow-wgc", false);
pref("network.send_OnDataFinished", false);
pref("network.send_OnDataFinished.html5parser", false);
pref("network.send_OnDataFinished.nsInputStreamPump", false);
pref("network.send_OnDataFinished_after_progress_updates", false);
pref("security.webauthn.enable_json_serialization_methods", true);
pref("security.webauthn.enable_macos_passkeys", false);
pref("timer.auto_increase_timer_resolution", false);
pref("toolkit.telemetry.dap_task1_taskid", "");
pref("toolkit.telemetry.dap_visit_counting_enabled", false);
pref("toolkit.telemetry.dap_visit_counting_experiment_list", "[]");
pref("ui.mouse.right_click.collapse_selection.stop_if_non_collapsed_selection", true);
pref("ui.mouse.right_click.collapse_selection.stop_if_non_editable_node", false);
pref("ui.new-webcompat-reporter.enabled", false);
pref("ui.new-webcompat-reporter.reason-dropdown", 0);
pref("ui.new-webcompat-reporter.send-more-info-link", false);
pref("widget.windows.utility_process_file_picker", 0);

==REMOVED, RENAMED or HIDDEN

pref("browser.safebrowsing.passwords.enabled", false);
pref("browser.translations.autoTranslate", false);
pref("browser.translations.languageIdentification.useFastText", false);
pref("devtools.toolbox.force-chrome-prefs", true);
pref("dom.resize_observer.last_reported_size_invalid", true);
pref("editor.join_split_direction.compatible_with_the_other_browsers", true);
pref("layout.css.bucket-attribute-names.enabled", true);
pref("layout.css.webkit-range-pseudos.enabled", false);
pref("media.autoplay.block-webaudio", true);
pref("media.videocontrols.lock-video-orientation", false);
pref("media.webrtc.capture.allow-wgc", false);
pref("pdfjs.viewerCssTheme", 0);
pref("urlclassifier.passwordAllowTable", "goog-passwordwhite-proto");

==CHANGED

pref("browser.contentblocking.report.vpn_regions", "ca,my,nz,sg,gb,gg,im,io,je,uk,vg,as,mp,pr,um,us,vi,de,fr,at,be,ch,es,it,ie,nl,se,fi,bg,cy,cz,dk,ee,hr,hu,lt,lu,lv,mt,pl,pt,ro,si,sk"); // prev: "as,at,be,ca,ch,de,es,fi,fr,gb,gg,ie,im,io,it,je,mp,my,nl,nz,pr,se,sg,uk,um,us,vg,vi"
pref("browser.safebrowsing.provider.google4.lists", "goog-badbinurl-proto,goog-downloadwhite-proto,goog-phish-proto,googpub-phish-proto,goog-malware-proto,goog-unwanted-proto,goog-harmful-proto"); // prev: "goog-badbinurl-proto,goog-downloadwhite-proto,goog-phish-proto,googpub-phish-proto,goog-malware-proto,goog-unwanted-proto,goog-harmful-proto,goog-passwordwhite-proto"
pref("browser.shopping.experience2023.ads.userEnabled", true); // prev: false
pref("browser.topsites.contile.sov.enabled", true); // prev: false
pref("cookiebanners.service.enableGlobalRules", true); // prev: false
pref("dom.animations.mainthread-synchronization-with-geometric-animations", false); // prev: true
pref("dom.iframe_lazy_loading.enabled", true); // prev: false
pref("javascript.options.wasm_tail_calls", true); // prev: false
pref("layout.css.has-selector.enabled", true); // prev: false
pref("layout.css.text-wrap-balance.enabled", true); // prev: false
pref("network.http.http2.websockets", false); // prev: true
pref("security.sandbox.utility-wmf-cdm.lpac.enabled", true); // prev: false
pref("toolkit.telemetry.dap_helper", "https://dap.services.mozilla.com"); // prev: "https://helper1.dap.cloudflareresearch.com/v02"
pref("toolkit.telemetry.dap_helper_owner", "Mozilla"); // prev: "Cloudflare"
pref("toolkit.telemetry.dap_leader", "https://dap-07-1.api.divviup.org/"); // prev: "https://dap-02.api.divviup.org"
pref("urlclassifier.disallow_completions", "goog-downloadwhite-digest256,base-track-digest256,mozstd-trackwhite-digest256,content-track-digest256,mozplugin-block-digest256,mozplugin2-block-digest256,ads-track-digest256,social-track-digest256,analytics-track-digest256,base-fingerprinting-track-digest256,content-fingerprinting-track-digest256,base-cryptomining-track-digest256,content-cryptomining-track-digest256,fanboyannoyance-ads-digest256,fanboysocial-ads-digest256,easylist-ads-digest256,easyprivacy-ads-digest256,adguard-ads-digest256,social-tracking-protection-digest256,social-tracking-protection-facebook-digest256,social-tracking-protection-linkedin-digest256,social-tracking-protection-twitter-digest256,base-email-track-digest256,content-email-track-digest256"); // prev: "goog-downloadwhite-digest256,base-track-digest256,mozstd-trackwhite-digest256,content-track-digest256,mozplugin-block-digest256,mozplugin2-block-digest256,goog-passwordwhite-proto,ads-track-digest256,social-track-digest256,analytics-track-digest256,base-fingerprinting-track-digest256,content-fingerprinting-track-digest256,base-cryptomining-track-digest256,content-cryptomining-track-digest256,fanboyannoyance-ads-digest256,fanboysocial-ads-digest256,easylist-ads-digest256,easyprivacy-ads-digest256,adguard-ads-digest256,social-tracking-protection-digest256,social-tracking-protection-facebook-digest256,social-tracking-protection-linkedin-digest256,social-tracking-protection-twitter-digest256,base-email-track-digest256,content-email-track-digest256"

[earthlng]

some bugzilla tickets

• browser.contentanalysis.enabled
  Bug 1811076: Part 2 - Create nsIContentAnalysis and command-line argument

• browser.contentanalysis.is_per_user
  Bug 1811076: Part 2 - Create nsIContentAnalysis and command-line argument

• browser.contentanalysis.pipe_path_name
  Bug 1811076: Part 2 - Create nsIContentAnalysis and command-line argument

• browser.contentanalysis.silent_notifications
  Bug 1811076: Part 5 - Add UI notifications for content analysis results

• browser.contentblocking.report.vpn_regions
  Bug 1858584 - update region lists for deciding whom to show VPN promos to

• browser.firefox-view.search.enabled
  Bug 1826328 - Add search capability to view in history

• browser.mailto.dualPrompt
  Bug 1864216 - Allow setting the browser as the OS default mailto handler,

• browser.mailto.dualPrompt.os
  Bug 1864216 - Allow setting the browser as the OS default mailto handler,

• browser.mailto.prompt.os
  Bug 1864216 - Allow setting the browser as the OS default mailto handler,

• browser.safebrowsing.passwords.enabled
  Bug 1862410 - Removing unused LoginReputation service and updating link to Chromium's safe browsing protobuf

• browser.shell.customProtocolsRegistered
  Bug 1862450 - Made installer changes for dual browser extension

• browser.shopping.experience2023.ads.userEnabled
  Bug 1868180 - Default browser.shopping.experience2023.ads.userEnabled to true.
  Bug 1852106 - disable shopping recommended product by default,
  Bug 1840520 - make settings ad toggle show or hide recommended products.

• browser.topsites.contile.sov.enabled
  Bug 1862308 - newtab sponsored topsites update SOV pref
  Bug 1834795 - Implement Share-of-Voice for sponsored tiles

• browser.translations.autoTranslate
  Bug 1855726 - Remove autotranslate prefs from . Remove usage of the pref and corresponsing lazy getter from TranslateParent.sys.mjs and also remove the corresponding test cases.
  Bug 1820229 - Stub out a button in the URL bar for translations;

• browser.translations.languageIdentification.useFastText
  Bug 1861516 - Remove Translations useFastText pref
  Bug 1836974 - Add language detection fastText pref

• browser.urlbar.quicksuggest.contextualOptIn
  Bug 1852056 - [Firefox Suggest Opt-in Experiment] Implement layout for opt-in UI after one-off button row.
  Bug 1852055 - [Firefox Suggest Opt-in Experiment] Implement opt-in UI at the top of the results list.

• browser.urlbar.quicksuggest.contextualOptIn.sayHello
  Bug 1852055 - [Firefox Suggest Opt-in Experiment] Implement opt-in UI at the top of the results list.

• browser.urlbar.quicksuggest.contextualOptIn.topPosition
  Bug 1852056 - [Firefox Suggest Opt-in Experiment] Implement layout for opt-in UI after one-off button row.

• cookiebanners.bannerClicking.executeOnce
  Bug 1854940 - Part 1: Stop running banner clicking code if the domain has been handled.

• cookiebanners.service.enableGlobalRules
  Bug 1861377 - Enable global cookie banner rules by default.
  Bug 1855178 - Add a pref to disable sub-frame cookie banner rule clicking for global rules.
  Bug 1820793 - Enable global cookie banner handling rules in Nightly.

• devtools.performance.recording.power.external-url
  Bug 1848987 - support providing external power profiling data to the profiler front-end,

• devtools.toolbox.force-chrome-prefs
  Bug 1862924 - Remove devtools.toolbox.force-chrome-prefs.

• dom.animations.mainthread-synchronization-with-geometric-animations
  Bug 1540906 - Let de-synchronization of transform and geometric animations ride the trains.

• dom.element.customstateset.enabled
  Bug 1861466 - Add CustomStateSet and :state() pseudo.

• dom.element.invokers.enabled
  Bug 1857887 - Add invoketarget & invoketarget action attributes

• dom.iframe_lazy_loading.enabled
  Bug 1860729 - Enable lazy loading iframes by default
  Bug 1860057 - Turn dom.iframe_lazy_loading.enabled to nightly only
  Bug 1622090 - Implement loading=lazy for <iframe>

• dom.resize_observer.last_reported_size_invalid
  Bug 1849934 - Remove dom.resize_observer.last_reported_size_invalid pref

• dom.select.showPicker.enabled
  Bug 1854112 - Make HTMLSelectElement showPicker method Nightly-only.
  Bug 1854112 - Add showPicker method to <select> elements.

• dom.webgpu.hal-labels
  Bug 1857929 - Set the wgpu flag to filter out labels.

• editor.join_split_direction.compatible_with_the_other_browsers
  Bug 1859245 - part 4: Make HTMLEditor handle only the new direction mode

• extensions.abuseReport.amoFormEnabled
  Bug 1859791 - Move prefs enabling the abuse report features only implemented on FirefoxDesktop into FirefoxDesktop prefs file.
  Bug 1859791 - Replace in-product abuse report flow with AMO web form.
  Bug 1863307 - Enable AMO hosted abuse report form on all channels for Firefox Desktop builds.

• extensions.abuseReport.amoFormURL
  Bug 1859791 - Replace in-product abuse report flow with AMO web form.

• javascript.options.wasm_tail_calls
  Bug 1846789 - Enable Wasm tail calls by default in release.

• layout.css.bucket-attribute-names.enabled
  Bug 1851090 - Remove layout.css.bucket-attribute-names.enabled pref

• layout.css.has-selector.enabled
  Bug 1858743: Enable :has on release.
  Bug 1853701: Enable :has on Nightly.

• layout.css.modern-range-pseudos.enabled
  Bug 1860666 - Add pref-gated ::slider-* pseudo-elements, and some tests.

• layout.css.scroll-anchoring.absolute-update
  Bug 1856088 - Handle scroll anchor adjustments as an absolute scroll position updates behind a pref.

• layout.css.text-align.justify-only-after-last-tab
  Bug 1834320 - Don't apply justification spacing when there are further tabs on the line.

• layout.css.text-indent-keywords.enabled
  Bug 784648 - Implement the 'hanging' and 'each-line' options for CSS text-indent.

• layout.css.text-wrap-balance.enabled
  Bug 1860446 - Enable text-wrap:balance for all channels.
  Bug 1731541 - Add CSS property text-wrap: auto | stable | balance.

• layout.css.webkit-range-pseudos.enabled
  Bug 1860666 - Remove webkit range pseudo-element aliases.

• media.autoplay.block-webaudio
  Bug 1853489 - Remove media.autoplay.block-webaudio pref
  Bug 1799535 - Clean-up autoplay prefs.

• media.eme.playready.istypesupportedex
  Bug 1851914 - part1 : guard IsTypeSupportedEx under a pref.

• media.eme.widevine.experiment.enabled
  Bug 1844169 - part3 : support querying Widevine experiment key system.

• media.gmp-widevinecdm-l1.enabled
  Bug 1862051 - Add basic plumbing for downloading Widevine L1 plugins.

• media.gmp-widevinecdm-l1.forceInstall
  Bug 1862051 - Add basic plumbing for downloading Widevine L1 plugins.

• media.gmp-widevinecdm-l1.visible
  Bug 1862051 - Add basic plumbing for downloading Widevine L1 plugins.

• media.videocontrols.lock-video-orientation
  Bug 1858977 - Remove dead code to lock orientation on video controls.

• media.webrtc.capture.allow-wgc
  Bug 1857862 (MOZ) - Update WGC desktop capture config and prefs.

• media.webrtc.capture.screen.allow-wgc
  Bug 1857862 (MOZ) - Update WGC desktop capture config and prefs.

• media.webrtc.capture.wgc.allow-zero-hertz
  Bug 1857862 (MOZ) - Update WGC desktop capture config and prefs.

• media.webrtc.capture.window.allow-wgc
  Bug 1857862 (MOZ) - Update WGC desktop capture config and prefs.

• network.http.http2.websockets
  Bug 1867006 - Disable HTTP2 websockets until we can resolve proxy issues. a=RyanVM

• network.send_OnDataFinished
  Bug 1862179 - disable pref pref network.send_OnDataFinished_after_progress_updates.
  Bug 1851992 - ensure all of the OnProgress updates are sent before triggering OnDataFinished in HttpChannelChild.
  Bug 1851992 - send onDataFinished notifications from nsInputStreamPump.
  Bug 1851992 - implement nsIThreadRetargetableStreamListener::OnDataFinished to send OMT data stop notification to thread retargetable stream listeners.

• network.send_OnDataFinished.html5parser
  Bug 1851992 - implement nsIThreadRetargetableStreamListener::OnDataFinished to send OMT data stop notification to thread retargetable stream listeners.

• network.send_OnDataFinished.nsInputStreamPump
  Bug 1851992 - send onDataFinished notifications from nsInputStreamPump.

• network.send_OnDataFinished_after_progress_updates
  Bug 1862179 - disable pref pref network.send_OnDataFinished_after_progress_updates.
  Bug 1851992 - ensure all of the OnProgress updates are sent before triggering OnDataFinished in HttpChannelChild.

• privacy.exposeContentTitleInWindow
  Bug 1849186 - Add a preference not to expose the content title in the window title.

• privacy.exposeContentTitleInWindow.pbm
  Bug 1849186 - Add a preference not to expose the content title in the window title.

• security.sandbox.utility-wmf-cdm.lpac.enabled
  Bug 1793966: Enable low privileged application container on MF Media Engine utility process.

• security.webauthn.enable_json_serialization_methods
  Bug 1864972 - provide a pref to disable webauthn serialization methods.

• security.webauthn.enable_macos_passkeys
  Bug 1853230 - support passkeys on macOS

• timer.auto_increase_timer_resolution
  Bug 1826224: Enable high-precision timers on Windows for foreground processes when not on battery power

• toolkit.telemetry.dap_helper
  Bug 1824913: URL counting,
  Bug 1804413: Update remote server prefs for new version. Improve error handling.

• toolkit.telemetry.dap_helper_owner
  Bug 1824913: URL counting,

• toolkit.telemetry.dap_leader
  Bug 1824913: URL counting,
  Bug 1804413: Update remote server prefs for new version. Improve error handling.

• toolkit.telemetry.dap_task1_taskid
  Bug 1824913: URL counting,

• toolkit.telemetry.dap_visit_counting_enabled
  Bug 1824913: URL counting,

• toolkit.telemetry.dap_visit_counting_experiment_list
  Bug 1824913: URL counting,

• ui.mouse.right_click.collapse_selection.stop_if_non_collapsed_selection
  Bug 1845241 - Make nsIFrame::HandleEvent move caret when secondary mouse button down

• ui.mouse.right_click.collapse_selection.stop_if_non_editable_node
  Bug 1845241 - Make nsIFrame::HandleEvent move caret when secondary mouse button down

• ui.new-webcompat-reporter.enabled
  Bug 1852340 - part 1: Add a new Gecko component for reporting broken websites;

• ui.new-webcompat-reporter.reason-dropdown
  Bug 1852340 - part 1: Add a new Gecko component for reporting broken websites;

• ui.new-webcompat-reporter.send-more-info-link
  Bug 1852340 - part 1: Add a new Gecko component for reporting broken websites;

• widget.windows.utility_process_file_picker
  Bug 1862712 - pref on out-of-process file-picker
  Bug 1837079 - [7/10] Open Windows file picker out-of-process