geckoview-prefs.js

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// This Source Code Form is subject to the terms of the Mozilla Public

// License, v. 2.0. If a copy of the MPL was not distributed with this

// file, You can obtain one at http://mozilla.org/MPL/2.0/. */

// Non-static prefs that are specific to GeckoView belong in this file.

//

// Please indent all prefs defined within #ifdef/#ifndef conditions. This

// improves readability, particular for conditional blocks that exceed a single

// screen.

// Caret browsing is disabled on mobile (bug 476009)

pref("accessibility.browsewithcaret_shortcut.enabled", false);

pref("accessibility.typeaheadfind", false);

pref("accessibility.typeaheadfind.flashBar", 1);

pref("accessibility.typeaheadfind.linksonly", false);

pref("accessibility.typeaheadfind.timeout", 5000);

pref("app.support.baseURL", "https://support.mozilla.org/1/mobile/%VERSION%/%OS%/%LOCALE%/");

#ifdef MOZ_UPDATER

  pref("app.update.channel", "@MOZ_UPDATE_CHANNEL@");

#endif

// Prefs used by UpdateTimerManager (including blocklist pings) (bug 783909)

pref("app.update.timerFirstInterval", 30000); // milliseconds

pref("app.update.timerMinimumDelay", 30); // seconds

// Use a breakout angle of 30° (bug 1885506)

pref("apz.axis_lock.breakout_angle", "0.5235988");

// APZ content response timeout (bug 1247280)

pref("apz.content_response_timeout", 600);

// Disable scrollbar dragging on Android (bug 1339831)

pref("apz.drag.enabled", false);

// Tweak fling curving to make medium-length flings go a bit faster (bug 1243854)

pref("apz.fling_curve_function_x1", "0.59");

pref("apz.fling_curve_function_x2", "0.05");

pref("apz.fling_curve_function_y1", "0.46");

pref("apz.fling_curve_function_y2", "1.00");

// :gordonb from UX said this value makes fling curving

// feel a lot better (bug 1095727)

pref("apz.fling_curve_threshold_inches_per_ms", "0.01");

// Adjust fling physics based on UX feedback (bug 1229839)

pref("apz.fling_friction", "0.004");

// Use Android OverScroller class for fling animation (bug 1229462)

pref("apz.fling_stopped_threshold", "0.0");

// :gordonb from UX said this value makes fling curving

// feel a lot better (bug 1095727)

pref("apz.max_velocity_inches_per_ms", "0.07");

// Don't allow a faraway second tap to start a one-touch pinch gesture (bug 1391770)

pref("apz.second_tap_tolerance", "0.3");

// This value originates from bug 1174532

pref("apz.touch_move_tolerance", "0.03");

// Lower the touch-start tolerance threshold to reduce scroll lag with APZ (bug 1230077)

pref("apz.touch_start_tolerance", "0.06");

// The breakpad report server to link to in about:crashes

pref("breakpad.reportURL", "https://crash-stats.mozilla.org/report/index/");

// Prevent tooltips from showing up (bug 623063)

pref("browser.chrome.toolbar_tips", false);

// True if you always want dump() to work

//

// On Android, you also need to do the following for the output

// to show up in logcat:

//

// $ adb shell stop

// $ adb shell setprop log.redirect-stdio true

// $ adb shell start

pref("browser.dom.window.dump.enabled", true);

// Default to ~/Downloads (bug 437954)

pref("browser.download.folderList", 1);

// Use Android DownloadManager for scanning downloads (bug 816318)

pref("browser.download.manager.addToRecentDocs", true);

// Load PDF files inline with PDF.js (bug 1754499)

pref("browser.download.open_pdf_attachments_inline", true);

pref("browser.download.useDownloadDir", true);

// When enabled, Services.uriFixup.isDomainKnown('localhost') will return true

pref("browser.fixup.domainwhitelist.localhost", true);

// Open in tab preferences

pref("browser.link.open_newwindow", 3);

// Supported values:

//  - 0: Force all new windows to tabs

//  - 1: Don't force

//  - 2: Only force those with no features set

pref("browser.link.open_newwindow.restriction", 0);

// Don't allow meta-refresh when backgrounded (bug 518805)

pref("browser.meta_refresh_when_inactive.disabled", true);

// The download protection UI is not implemented yet (bug 1239094).

pref("browser.safebrowsing.downloads.enabled", false);

pref("browser.safebrowsing.features.cryptomining.update", true);

pref("browser.safebrowsing.features.fingerprinting.update", true);

pref("browser.safebrowsing.features.malware.update", true);

pref("browser.safebrowsing.features.phishing.update", true);

pref("browser.safebrowsing.features.trackingAnnotation.update", true);

pref("browser.safebrowsing.features.trackingProtection.update", true);

// Disable search suggestions by default (bug 784104)

pref("browser.search.suggest.enabled", false);

// Disable search engine updating (bug 431842)

pref("browser.search.update", false);

// Session history

pref("browser.sessionhistory.contentViewerTimeout", 360);

pref("browser.sessionhistory.max_entries", 50);

// Session store

pref("browser.sessionstore.interval", 10000); // milliseconds

pref("browser.sessionstore.max_resumed_crashes", 2);

pref("browser.sessionstore.max_tabs_undo", 10);

// Supported values:

//  - 0: all

//  - 1: unencrypted sites

//  - 2: never

pref("browser.sessionstore.privacy_level", 0);

pref("browser.sessionstore.resume_from_crash", true);

// Enables the translations engine

pref("browser.translations.enable", true);

// Used for mocking data for GeckoView Translations tests, should use in addition with an automation check.

pref("browser.translations.geckoview.enableAllTestMocks", false);

// Used for mocking data for GeckoView WebCompat tests, should use in addition with an automation check.

pref("browser.webcompat.geckoview.enableAllTestMocks", false);

// SSL error page behaviour (bug 437372)

pref("browser.xul.error_pages.expert_bad_cert", false);

// Enable sparse localization by setting a few package locale overrides (bug 792077)

pref("chrome.override_package.global", "browser");

pref("chrome.override_package.mozapps", "browser");

pref("chrome.override_package.passwordmgr", "browser");

// Allow Console API to log messages on stdout (bug 1480544)

pref("devtools.console.stdout.chrome", true);

// Absolute path to the devtools unix domain socket file used

// to communicate with a usb cable via adb forward.

pref("devtools.debugger.unix-domain-socket", "@ANDROID_PACKAGE_NAME@/firefox-debugger-socket");

// Enable capture attribute for file input (bug 1553603)

pref("dom.capture.enabled", true);

// Block popups by default (bug 436057)

pref("dom.disable_open_during_load", true);

// Don't allow JS to move and resize existing windows (bug 456081)

pref("dom.disable_window_move_resize", true);

// "graceful" process termination is misinterpreted as a process crash.

// To avoid this issue, we set dom.ipc.keepProcessesAlive.extension to 1.

// This stops Gecko from terminating the extension process. This also reduces

// the overhead of resuming a suspended (background) extension page.

// Note that this only covers "graceful" termination by Gecko.

// Android-triggered force-kills and OOM are not prevented and should still

// be accounted for. See bug 1847608 for more info

pref("dom.ipc.keepProcessesAlive.extension", 1);

// Keep empty content process alive on Android (bug 1447393)

pref("dom.ipc.keepProcessesAlive.web", 1);

// This value is derived from the calculation:

// MOZ_ANDROID_CONTENT_SERVICE_COUNT - dom.ipc.processCount

// (dom.ipc.processCount is set in GeckoRuntimeSettings.java) (bug 1619655)

pref("dom.ipc.processCount.webCOOP+COEP", 38);

// Disable the preallocated process on Android

pref("dom.ipc.processPrelaunch.enabled", false);

// Increase script timeouts (bug 485610)

pref("dom.max_script_run_time", 20);

// Enable meta-viewport support for font inflation code (bug 1106255)

pref("dom.meta-viewport.enabled", true);

// The maximum number of recent message IDs to store for each push

// subscription, to avoid duplicates for unacknowledged messages (bug 1207743)

pref("dom.push.maxRecentMessageIDsPerSubscription", 0);

// Allow service workers to open windows for a longer period after a notification

// click on mobile. This is to account for some devices being quite slow (bug 1409761)

pref("dom.serviceWorkers.disable_open_click_delay", 5000);

// Enable WebShare support (bug 1402369)

pref("dom.webshare.enabled", true);

// Disable add-ons that are not installed by the user in all scopes by default (See the SCOPE

// constants in AddonManager.sys.mjs for values to use here, and Bug 1405528 for a rationale)

pref("extensions.autoDisableScopes", 15);

pref("extensions.enabledScopes", 5);

// If true, unprivileged extensions may use experimental APIs

pref("extensions.experiments.enabled", false);

// Support credit cards in GV autocomplete API (bug 1691819)

pref("extensions.formautofill.addresses.capture.enabled", true);

pref("extensions.getAddons.browseAddons", "https://addons.mozilla.org/%LOCALE%/android/collections/4757633/mob/?page=1&collection_sort=-popularity");

pref("extensions.getAddons.cache.enabled", true);

pref("extensions.getAddons.get.url", "https://services.addons.mozilla.org/api/v4/addons/search/?guid=%IDS%&lang=%LOCALE%");

pref("extensions.getAddons.langpacks.url", "https://services.addons.mozilla.org/api/v4/addons/language-tools/?app=android&type=language&appversion=%VERSION%");

pref("extensions.getAddons.search.browseURL", "https://addons.mozilla.org/%LOCALE%/android/search?q=%TERMS%&platform=%OS%&appver=%VERSION%");

// Don't let XPIProvider install distribution add-ons; we do our own thing on mobile

pref("extensions.installDistroAddons", false);

// Require language packs to be signed (bug 1454141)

pref("extensions.langpacks.signatures.required", true);

// Enables some extra Extension System Logging (can reduce performance)

pref("extensions.logging.enabled", false);

// Whether MV3 restrictions for actions popup urls should be extended to MV2 extensions

// (only allowing same extension urls to be used as action popup urls)

pref("extensions.manifestV2.actionsPopupURLRestricted", true);

// Disables strict compatibility, making addons compatible-by-default

pref("extensions.strictCompatibility", false);

// Allow system add-on updates (bug 1260213)

pref("extensions.systemAddon.update.enabled", true);

pref("extensions.systemAddon.update.url", "https://aus5.mozilla.org/update/3/SystemAddons/%VERSION%/%BUILD_ID%/%BUILD_TARGET%/%LOCALE%/%CHANNEL%/%OS_VERSION%/%DISTRIBUTION%/%DISTRIBUTION_VERSION%/update.xml");

pref("extensions.update.background.url", "https://versioncheck-bg.addons.mozilla.org/update/VersionCheck.php?reqVersion=%REQ_VERSION%&id=%ITEM_ID%&version=%ITEM_VERSION%&maxAppVersion=%ITEM_MAXAPPVERSION%&status=%ITEM_STATUS%&appID=%APP_ID%&appVersion=%APP_VERSION%&appOS=%APP_OS%&appABI=%APP_ABI%&locale=%APP_LOCALE%&currentAppVersion=%CURRENT_APP_VERSION%&updateType=%UPDATE_TYPE%&compatMode=%COMPATIBILITY_MODE%");

pref("extensions.update.enabled", true);

pref("extensions.update.interval", 86400);

pref("extensions.update.url", "https://versioncheck.addons.mozilla.org/update/VersionCheck.php?reqVersion=%REQ_VERSION%&id=%ITEM_ID%&version=%ITEM_VERSION%&maxAppVersion=%ITEM_MAXAPPVERSION%&status=%ITEM_STATUS%&appID=%APP_ID%&appVersion=%APP_VERSION%&appOS=%APP_OS%&appABI=%APP_ABI%&locale=%APP_LOCALE%&currentAppVersion=%CURRENT_APP_VERSION%&updateType=%UPDATE_TYPE%&compatMode=%COMPATIBILITY_MODE%");

// Enable prompts for browser.permissions.request() (bug 1392176)

pref("extensions.webextOptionalPermissionPrompts", true);

// Start (proxy) extensions as soon as a network request is observed, instead

// of waiting until the first browser window has opened. This is needed because

// GeckoView can trigger requests without opening geckoview.xhtml.

pref("extensions.webextensions.early_background_wakeup_on_request", true);

// Scroll and zoom into editable form fields (bug 834613)

pref("formhelper.autozoom", true);

// Optionally send web console output to logcat (bug 1415318)

pref("geckoview.console.enabled", false);

#ifdef NIGHTLY_BUILD

  // Used for mocking data for GeckoView shopping tests, should use in addition with an automation check.

  pref("geckoview.shopping.mock_test_response", false);

#endif

pref("image.cache.size", 1048576); // bytes

// Inherit locale from the OS, used for multi-locale builds

pref("intl.locale.requested", "");

pref("keyword.enabled", true);

// Always tilt the caret to match the text selection guideline (bug 1097398)

pref("layout.accessiblecaret.always_tilt", true);

// Show the caret when long tapping on empty content (bug 1246064)

pref("layout.accessiblecaret.caret_shown_when_long_tapping_on_empty_content", true);

// Initial text selection on long-press is enhanced to provide

// a smarter phone-number selection for direct-dial ActionBar action (bug 1235508)

pref("layout.accessiblecaret.extend_selection_for_phone_number", true);

// Provide haptic feedback on longPress selection events (bug 1230613)

pref("layout.accessiblecaret.hapticfeedback", true);

// AccessibleCaret css for Android L style assets (bug 1097398)

pref("layout.accessiblecaret.height", "22.0");

pref("layout.accessiblecaret.margin-left", "-11.5");

pref("layout.accessiblecaret.width", "22.0");

// Update any visible carets for selection changes due to JS calls,

// but don't show carets if carets are hidden (bug 1463576)

pref("layout.accessiblecaret.script_change_update_mode", 1);

// Disable CSS error reporting by default to improve performance (bug 831123)

pref("layout.css.report_errors", false);

pref("layout.spellcheckDefault", 0);

// Enable EME permission prompts (bug 1620102)

pref("media.eme.require-app-approval", true);

// Enable autoplay permission prompts (bug 1577596)

pref("media.geckoview.autoplay.request", true);

// Disable future downloads of OpenH264 on Android (bug 1548679)

pref("media.gmp-gmpopenh264.autoupdate", false);

// Keep OpenH264 if already installed before. (bug 1532578)

pref("media.gmp-gmpopenh264.enabled", true);

pref("media.gmp-gmpopenh264.visible", true);

// Enable GMP support in the addon manager (bug 1089867)

pref("media.gmp-provider.enabled", true);

// Enable Widevine MediaKeySystem (bug 1306219)

pref("media.mediadrm-widevinecdm.visible", true);

// Ask for permission when enumerating WebRTC devices (bug 1369108)

pref("media.navigator.permission.device", true);

// On mobile we throttle the download once the readahead_limit is hit

// if we're using a cellular connection, even if the download is slow,

// this is to preserve battery and data (bug 1540573)

pref("media.throttle-cellular-regardless-of-download-rate", true);

// Number of video frames we buffer while decoding video.

// On Android this is decided by a similar value which varies for

// each OMX decoder |OMX_PARAM_PORTDEFINITIONTYPE::nBufferCountMin|. This

// number must be less than the OMX equivalent or gecko will think it is

// chronically starved of video frames. All decoders seen so far have a value

// of at least 4. (bug 973408)

pref("media.video-queue.default-size", 3);

// The maximum number of queued frames to send to the compositor.

// On Android, it needs to be throttled because SurfaceTexture contains only one

// (the most recent) image data. (bug 1299068)

pref("media.video-queue.send-to-compositor-size", 1);

// Increase necko buffer sizes for Android (bug 560591)

pref("network.buffer.cache.size",  16384);

// Set HPACK receive buffer size appropriately for Android (bug 1296280)

pref("network.http.http2.default-hpack-buffer", 4096);

// HTTP/2 Server Push (bug 790388)

pref("network.http.http2.push-allowance", 32768);

// Reduce HTTP Idle connection timeout on Android to improve battery life (bug 1007959)

pref("network.http.keep-alive.timeout", 109);

// Update connection limits; especially for proxies (bug 648603)

pref("network.http.max-persistent-connections-per-proxy", 20);

// Disable warning for mailto and tel protocols (bug 589403)

pref("network.protocol-handler.warn-external.mailto", false);

pref("network.protocol-handler.warn-external.tel", false);

// Disable warning for sms protocol (bug 819554)

pref("network.protocol-handler.warn-external.sms", false);

// Do not warn when opening YouTube (bug 630364)

pref("network.protocol-handler.warn-external.vnd.youtube", false);

// Transmit UDP busy-work to the LAN when anticipating low latency

// network reads and on wifi to mitigate 802.11 Power Save Polling delays

// (bug 888268)

pref("network.tickle-wifi.enabled", true);

// Try to convert PDFs sent as octet-stream (bug 1754499)

pref("pdfjs.handleOctetStream", true);

// Disable tracking protection in PBM for GeckoView (bug 1436887)

pref("privacy.trackingprotection.pbmode.enabled", false);

pref("privacy.fingerprintingProtection.pbmode", true);

// Relay integration is not supported on mobile

pref("signon.firefoxRelay.feature", "not available");

pref("signon.showAutoCompleteFooter", true);

// Delegate autocomplete to GeckoView (bug 1618058)

pref("toolkit.autocomplete.delegate", true);

// Locked because any other value would break GeckoView

pref("toolkit.defaultChromeURI", "chrome://geckoview/content/geckoview.xhtml", locked);

// Whether to use unified telemetry behavior; requires a restart to take effect

pref("toolkit.telemetry.unified", false);

// Download protection lists are not available on Android (bug 1397938, bug 1394017)

pref("urlclassifier.downloadAllowTable", "");

pref("urlclassifier.downloadBlockTable", "");

// The Potentially Harmful Apps list replaces the malware one on Android (bug 1394017)

pref("urlclassifier.malwareTable", "goog-harmful-proto,goog-unwanted-proto,moztest-harmful-simple,moztest-malware-simple,moztest-unwanted-simple");

// Android doesn't support the new sync storage yet (bug 1625257)

pref("webextensions.storage.sync.kinto", true);

// Require extensions to be signed (bug 1244329)

pref("xpinstall.signatures.required", true);

pref("xpinstall.whitelist.add", "https://addons.mozilla.org");

pref("xpinstall.whitelist.fileRequest", false);

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