gecko-dev/b2g/app/b2g.js

/* 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/. */

#filter substitution

// For the all MOZ_MULET ifdef conditions in this file: see bug 1174234

#ifndef MOZ_MULET
pref("toolkit.defaultChromeURI", "chrome://b2g/content/shell.html");
pref("browser.chromeURL", "chrome://b2g/content/");
#endif

#ifdef MOZ_MULET
// Set FxOS as the default homepage
// bug 1000122: this pref is fetched as a complex value,
// so that it can't be set a just a string.
// data: url is a workaround this.
pref("browser.startup.homepage", "data:text/plain,browser.startup.homepage=chrome://b2g/content/shell.html");
pref("b2g.is_mulet", true);
// Prevent having the firstrun page
pref("startup.homepage_welcome_url", "");
pref("browser.shell.checkDefaultBrowser", false);
// Automatically open devtools on the firefox os panel
pref("devtools.toolbox.host", "side");
pref("devtools.toolbox.sidebar.width", 800);
// Disable session store to ensure having only one tab opened
pref("browser.sessionstore.max_tabs_undo", 0);
pref("browser.sessionstore.max_windows_undo", 0);
pref("browser.sessionstore.restore_on_demand", false);
pref("browser.sessionstore.resume_from_crash", false);
// No e10s on mulet
pref("browser.tabs.remote.autostart.1", false);
pref("browser.tabs.remote.autostart.2", false);
#endif

// Bug 945235: Prevent all bars to be considered visible:
pref("toolkit.defaultChromeFeatures", "chrome,dialog=no,close,resizable,scrollbars,extrachrome");

// Disable focus rings
pref("browser.display.focus_ring_width", 0);

// Device pixel to CSS px ratio, in percent. Set to -1 to calculate based on display density.
pref("browser.viewport.scaleRatio", -1);

/* disable text selection */
pref("browser.ignoreNativeFrameTextSelection", true);

/* cache prefs */
#ifdef MOZ_WIDGET_GONK
pref("browser.cache.disk.enable", true);
pref("browser.cache.disk.capacity", 55000); // kilobytes
pref("browser.cache.disk.parent_directory", "/cache");
#endif
pref("browser.cache.disk.smart_size.enabled", false);
pref("browser.cache.disk.smart_size.first_run", false);

pref("browser.cache.memory.enable", true);
pref("browser.cache.memory.capacity", 1024); // kilobytes

pref("browser.cache.memory_limit", 2048); // 2 MB

/* image cache prefs */
pref("image.cache.size", 1048576); // bytes
pref("canvas.image.cache.limit", 20971520); // 20 MB

/* offline cache prefs */
pref("browser.offline-apps.notify", false);
pref("browser.cache.offline.enable", true);
pref("offline-apps.allow_by_default", true);

/* protocol warning prefs */
pref("network.protocol-handler.warn-external.tel", false);
pref("network.protocol-handler.warn-external.mailto", false);
pref("network.protocol-handler.warn-external.vnd.youtube", false);

/* http prefs */
pref("network.http.pipelining", true);
pref("network.http.pipelining.ssl", true);
pref("network.http.proxy.pipelining", true);
pref("network.http.pipelining.maxrequests" , 6);
pref("network.http.keep-alive.timeout", 109);
pref("network.http.max-connections", 20);
pref("network.http.max-persistent-connections-per-server", 6);
pref("network.http.max-persistent-connections-per-proxy", 20);

// Keep the old default of accepting all cookies,
// no matter if you already visited the website or not
pref("network.cookie.cookieBehavior", 0);

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

// See bug 545869 for details on why these are set the way they are
pref("network.buffer.cache.count", 24);
pref("network.buffer.cache.size",  16384);

// predictive actions
pref("network.predictor.enabled", false); // disabled on b2g
pref("network.predictor.max-db-size", 2097152); // bytes
pref("network.predictor.preserve", 50); // percentage of predictor data to keep when cleaning up

/* session history */
pref("browser.sessionhistory.max_entries", 50);
pref("browser.sessionhistory.contentViewerTimeout", 360);

/* session store */
pref("browser.sessionstore.resume_session_once", false);
pref("browser.sessionstore.resume_from_crash", true);
pref("browser.sessionstore.resume_from_crash_timeout", 60); // minutes
pref("browser.sessionstore.interval", 10000); // milliseconds
pref("browser.sessionstore.max_tabs_undo", 1);

/* these should help performance */
pref("mozilla.widget.force-24bpp", true);
pref("mozilla.widget.use-buffer-pixmap", true);
pref("mozilla.widget.disable-native-theme", true);
pref("layout.reflow.synthMouseMove", false);
#ifndef MOZ_X11
pref("layers.enable-tiles", true);
#endif
pref("layers.low-precision-buffer", true);
pref("layers.low-precision-opacity", "0.5");
pref("layers.progressive-paint", true);

/* download manager (don't show the window or alert) */
pref("browser.download.useDownloadDir", true);
pref("browser.download.folderList", 1); // Default to ~/Downloads
pref("browser.download.manager.showAlertOnComplete", false);
pref("browser.download.manager.showAlertInterval", 2000);
pref("browser.download.manager.retention", 2);
pref("browser.download.manager.showWhenStarting", false);
pref("browser.download.manager.closeWhenDone", true);
pref("browser.download.manager.openDelay", 0);
pref("browser.download.manager.focusWhenStarting", false);
pref("browser.download.manager.flashCount", 2);
pref("browser.download.manager.displayedHistoryDays", 7);

/* download helper */
pref("browser.helperApps.deleteTempFileOnExit", false);

/* password manager */
pref("signon.rememberSignons", true);
pref("signon.expireMasterPassword", false);

/* autocomplete */
pref("browser.formfill.enable", true);

/* spellcheck */
pref("layout.spellcheckDefault", 0);

/* block popups by default, and notify the user about blocked popups */
pref("dom.disable_open_during_load", true);
pref("privacy.popups.showBrowserMessage", true);

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

pref("accessibility.typeaheadfind", false);
pref("accessibility.typeaheadfind.timeout", 5000);
pref("accessibility.typeaheadfind.flashBar", 1);
pref("accessibility.typeaheadfind.linksonly", false);
pref("accessibility.typeaheadfind.casesensitive", 0);

// SSL error page behaviour
pref("browser.ssl_override_behavior", 2);
pref("browser.xul.error_pages.expert_bad_cert", false);

// disable updating
pref("browser.search.update", false);

// tell the search service that we don't really expose the "current engine"
pref("browser.search.noCurrentEngine", true);

// enable xul error pages
pref("browser.xul.error_pages.enabled", true);

// disable color management
pref("gfx.color_management.mode", 0);

// don't allow JS to move and resize existing windows
pref("dom.disable_window_move_resize", true);

// prevent click image resizing for nsImageDocument
pref("browser.enable_click_image_resizing", false);

// controls which bits of private data to clear. by default we clear them all.
pref("privacy.item.cache", true);
pref("privacy.item.cookies", true);
pref("privacy.item.offlineApps", true);
pref("privacy.item.history", true);
pref("privacy.item.formdata", true);
pref("privacy.item.downloads", true);
pref("privacy.item.passwords", true);
pref("privacy.item.sessions", true);
pref("privacy.item.geolocation", true);
pref("privacy.item.siteSettings", true);
pref("privacy.item.syncAccount", true);

// base url for the wifi geolocation network provider
pref("geo.provider.use_mls", false);
pref("geo.cell.scan", true);
pref("geo.wifi.uri", "https://location.services.mozilla.com/v1/geolocate?key=%MOZILLA_API_KEY%");

// base url for the stumbler
pref("geo.stumbler.url", "https://location.services.mozilla.com/v1/geosubmit?key=%MOZILLA_API_KEY%");

// enable geo
pref("geo.enabled", true);

// content sink control -- controls responsiveness during page load
// see https://bugzilla.mozilla.org/show_bug.cgi?id=481566#c9
pref("content.sink.enable_perf_mode",  2); // 0 - switch, 1 - interactive, 2 - perf
pref("content.sink.pending_event_mode", 0);
pref("content.sink.perf_deflect_count", 1000000);
pref("content.sink.perf_parse_time", 50000000);

// Maximum scripts runtime before showing an alert
// Disable the watchdog thread for B2G. See bug 870043 comment 31.
pref("dom.use_watchdog", false);

// The slow script dialog can be triggered from inside the JS engine as well,
// ensure that those calls don't accidentally trigger the dialog.
pref("dom.max_script_run_time", 0);
pref("dom.max_chrome_script_run_time", 0);

// plugins
pref("plugin.disable", true);
pref("dom.ipc.plugins.enabled", true);

// product URLs
// The breakpad report server to link to in about:crashes
pref("breakpad.reportURL", "https://crash-stats.mozilla.com/report/index/");
pref("app.releaseNotesURL", "https://www.mozilla.com/%LOCALE%/b2g/%VERSION%/releasenotes/");
pref("app.support.baseURL", "https://support.mozilla.com/b2g");
pref("app.privacyURL", "https://www.mozilla.com/%LOCALE%/m/privacy.html");
pref("app.creditsURL", "https://www.mozilla.org/credits/");
pref("app.featuresURL", "https://www.mozilla.com/%LOCALE%/b2g/features/");
pref("app.faqURL", "https://www.mozilla.com/%LOCALE%/b2g/faq/");

// Name of alternate about: page for certificate errors (when undefined, defaults to about:neterror)
pref("security.alternate_certificate_error_page", "certerror");

pref("security.warn_viewing_mixed", false); // Warning is disabled.  See Bug 616712.

// Block insecure active content on https pages
pref("security.mixed_content.block_active_content", true);

// 2 = strict certificate pinning checks.
// This default preference is more strict than Firefox because B2G
// currently does not have a way to install local root certificates.
// Strict checking is effectively equivalent to non-strict checking as
// long as that is true.  If an ability to add local certificates is
// added, there may be a need to change this pref.
pref("security.cert_pinning.enforcement_level", 2);


// Override some named colors to avoid inverse OS themes
pref("ui.-moz-dialog", "#efebe7");
pref("ui.-moz-dialogtext", "#101010");
pref("ui.-moz-field", "#fff");
pref("ui.-moz-fieldtext", "#1a1a1a");
pref("ui.-moz-buttonhoverface", "#f3f0ed");
pref("ui.-moz-buttonhovertext", "#101010");
pref("ui.-moz-combobox", "#fff");
pref("ui.-moz-comboboxtext", "#101010");
pref("ui.buttonface", "#ece7e2");
pref("ui.buttonhighlight", "#fff");
pref("ui.buttonshadow", "#aea194");
pref("ui.buttontext", "#101010");
pref("ui.captiontext", "#101010");
pref("ui.graytext", "#b1a598");
pref("ui.highlighttext", "#1a1a1a");
pref("ui.threeddarkshadow", "#000");
pref("ui.threedface", "#ece7e2");
pref("ui.threedhighlight", "#fff");
pref("ui.threedlightshadow", "#ece7e2");
pref("ui.threedshadow", "#aea194");
pref("ui.windowframe", "#efebe7");

// Themable via mozSettings
pref("ui.menu", "#f97c17");
pref("ui.menutext", "#ffffff");
pref("ui.infobackground", "#343e40");
pref("ui.infotext", "#686868");
pref("ui.window", "#ffffff");
pref("ui.windowtext", "#000000");
pref("ui.highlight", "#b2f2ff");

// replace newlines with spaces on paste into single-line text boxes
pref("editor.singleLine.pasteNewlines", 2);

// threshold where a tap becomes a drag, in 1/240" reference pixels
// The names of the preferences are to be in sync with EventStateManager.cpp
pref("ui.dragThresholdX", 25);
pref("ui.dragThresholdY", 25);

// Layers Acceleration.  We can only have nice things on gonk, because
// they're not maintained anywhere else.
#ifndef MOZ_WIDGET_GONK
pref("dom.ipc.tabs.disabled", true);
#else
pref("dom.ipc.tabs.disabled", false);
pref("layers.acceleration.disabled", false);
pref("layers.async-pan-zoom.enabled", true);
pref("gfx.content.azure.backends", "cairo");
#endif

// Web Notifications
pref("notification.feature.enabled", true);

// prevent video elements from preloading too much data
pref("media.preload.default", 1); // default to preload none
pref("media.preload.auto", 2);    // preload metadata if preload=auto
pref("media.cache_size", 4096);    // 4MB media cache
// Try to save battery by not resuming reading from a connection until we fall
// below 10s of buffered data.
pref("media.cache_resume_threshold", 10);
pref("media.cache_readahead_limit", 30);

#ifdef MOZ_FMP4
// Enable/Disable Gonk Decoder Module
pref("media.gonk.enabled", true);
#endif

//Encrypted media extensions.
pref("media.eme.enabled", true);
pref("media.eme.apiVisible", true);
// The default number of decoded video frames that are enqueued in
// MediaDecoderReader's mVideoQueue.
pref("media.video-queue.default-size", 3);

// optimize images' memory usage
pref("image.downscale-during-decode.enabled", true);
pref("image.mem.allow_locking_in_content_processes", true);
// Limit the surface cache to 1/8 of main memory or 128MB, whichever is smaller.
// Almost everything that was factored into 'max_decoded_image_kb' is now stored
// in the surface cache.  1/8 of main memory is 32MB on a 256MB device, which is
// about the same as the old 'max_decoded_image_kb'.
pref("image.mem.surfacecache.max_size_kb", 131072);  // 128MB
pref("image.mem.surfacecache.size_factor", 8);  // 1/8 of main memory
pref("image.mem.surfacecache.discard_factor", 2);  // Discard 1/2 of the surface cache at a time.
pref("image.mem.surfacecache.min_expiration_ms", 86400000); // 24h, we rely on the out of memory hook

pref("dom.w3c_touch_events.safetyX", 0); // escape borders in units of 1/240"
pref("dom.w3c_touch_events.safetyY", 120); // escape borders in units of 1/240"

// True if this is the first time we are showing about:firstrun
pref("browser.firstrun.show.uidiscovery", true);
pref("browser.firstrun.show.localepicker", true);

// initiated by a user
pref("content.ime.strict_policy", true);

// 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", false);

// Default Content Security Policy to apply to certified apps.
// If you change this CSP, make sure to update the fast path in nsCSPService.cpp
pref("security.apps.certified.CSP.default", "default-src * data: blob:; script-src 'self'; object-src 'none'; style-src 'self' 'unsafe-inline' app://theme.gaiamobile.org");

// handle links targeting new windows
// 1=current window/tab, 2=new window, 3=new tab in most recent window
pref("browser.link.open_newwindow", 3);

// 0: no restrictions - divert everything
// 1: don't divert window.open at all
// 2: don't divert window.open with features
pref("browser.link.open_newwindow.restriction", 0);

// Enable browser frames (including OOP, except on Windows, where it doesn't
// work), but make in-process browser frames the default.
pref("dom.mozBrowserFramesEnabled", true);

// Enable a (virtually) unlimited number of mozbrowser processes.
// We'll run out of PIDs on UNIX-y systems before we hit this limit.
pref("dom.ipc.processCount", 100000);

pref("dom.ipc.browser_frames.oop_by_default", false);

#if !defined(MOZ_MULET) && !defined(MOZ_GRAPHENE)
pref("dom.meta-viewport.enabled", true);
#endif

// SMS/MMS
pref("dom.sms.enabled", true);

//The waiting time in network manager.
pref("network.gonk.ms-release-mms-connection", 30000);

// Shortnumber matching needed for e.g. Brazil:
// 03187654321 can be found with 87654321
pref("dom.phonenumber.substringmatching.BR", 8);
pref("dom.phonenumber.substringmatching.CO", 10);
pref("dom.phonenumber.substringmatching.VE", 7);
pref("dom.phonenumber.substringmatching.CL", 8);
pref("dom.phonenumber.substringmatching.PE", 7);

// WebAlarms
pref("dom.mozAlarms.enabled", true);

// SimplePush
pref("services.push.enabled", true);
// Debugging enabled.
pref("services.push.debug", false);
// Is the network connection allowed to be up?
// This preference should be used in UX to enable/disable push.
pref("services.push.connection.enabled", true);
// serverURL to be assigned by services team
pref("services.push.serverURL", "wss://push.services.mozilla.com/");
pref("services.push.userAgentID", "");
// Exponential back-off start is 5 seconds like in HTTP/1.1.
// Maximum back-off is pingInterval.
pref("services.push.retryBaseInterval", 5000);
// Interval at which to ping PushServer to check connection status. In
// milliseconds. If no reply is received within requestTimeout, the connection
// is considered closed.
pref("services.push.pingInterval", 1800000); // 30 minutes
// How long before a DOMRequest errors as timeout
pref("services.push.requestTimeout", 10000);
pref("services.push.pingInterval.default", 180000);// 3 min
pref("services.push.pingInterval.mobile", 180000); // 3 min
pref("services.push.pingInterval.wifi", 180000);  // 3 min
// Adaptive ping
pref("services.push.adaptive.enabled", true);
pref("services.push.adaptive.lastGoodPingInterval", 180000);// 3 min
pref("services.push.adaptive.lastGoodPingInterval.mobile", 180000);// 3 min
pref("services.push.adaptive.lastGoodPingInterval.wifi", 180000);// 3 min
// Valid gap between the biggest good ping and the bad ping
pref("services.push.adaptive.gap", 60000); // 1 minute
// We limit the ping to this maximum value
pref("services.push.adaptive.upperLimit", 1740000); // 29 min
// enable udp wakeup support
pref("services.push.udp.wakeupEnabled", true);

// NetworkStats
#ifdef MOZ_WIDGET_GONK
pref("dom.mozNetworkStats.enabled", true);
pref("dom.webapps.firstRunWithSIM", true);
#endif

// ResourceStats
#ifdef MOZ_WIDGET_GONK
pref("dom.resource_stats.enabled", true);
#endif

#ifdef MOZ_B2G_RIL
// SingleVariant
pref("dom.mozApps.single_variant_sourcedir", "/persist/svoperapps");
#endif

// WebSettings
pref("dom.mozSettings.enabled", true);
pref("dom.mozPermissionSettings.enabled", true);

// controls if we want camera support
pref("device.camera.enabled", true);
pref("media.realtime_decoder.enabled", true);

// TCPSocket
pref("dom.mozTCPSocket.enabled", true);

// WebPayment
pref("dom.mozPay.enabled", true);

// "Preview" landing of bug 710563, which is bogged down in analysis
// of talos regression.  This is a needed change for higher-framerate
// CSS animations, and incidentally works around an apparent bug in
// our handling of requestAnimationFrame() listeners, which are
// supposed to enable this REPEATING_PRECISE_CAN_SKIP behavior.  The
// secondary bug isn't really worth investigating since it's obseleted
// by bug 710563.
pref("layout.frame_rate.precise", true);

// Handle hardware buttons in the b2g chrome package
pref("b2g.keys.menu.enabled", true);

// Display simulator software buttons
pref("b2g.software-buttons", false);

// Screen timeout in seconds
pref("power.screen.timeout", 60);

pref("full-screen-api.enabled", true);

#ifndef MOZ_WIDGET_GONK
// If we're not actually on physical hardware, don't make the top level widget
// fullscreen when transitioning to fullscreen. This means in emulated
// environments (like the b2g desktop client) we won't make the client window
// fill the whole screen, we'll just make the content fill the client window,
// i.e. it won't give the impression to content that the number of device
// screen pixels changes!
pref("full-screen-api.ignore-widgets", true);
#endif

pref("media.volume.steps", 10);

#ifdef ENABLE_MARIONETTE
//Enable/disable marionette server, set listening port
pref("marionette.defaultPrefs.enabled", true);
pref("marionette.defaultPrefs.port", 2828);
#ifndef MOZ_WIDGET_GONK
// On desktop builds, we need to force the socket to listen on localhost only
pref("marionette.force-local", true);
#endif
#endif

#ifdef MOZ_UPDATER
// When we're applying updates, we can't let anything hang us on
// quit+restart.  The user has no recourse.
pref("shutdown.watchdog.timeoutSecs", 10);
// Timeout before the update prompt automatically installs the update
pref("b2g.update.apply-prompt-timeout", 60000); // milliseconds
// Amount of time to wait after the user is idle before prompting to apply an update
pref("b2g.update.apply-idle-timeout", 600000); // milliseconds
// Amount of time after which connection will be restarted if no progress
pref("b2g.update.download-watchdog-timeout", 120000); // milliseconds
pref("b2g.update.download-watchdog-max-retries", 5);

pref("app.update.enabled", true);
pref("app.update.auto", false);
pref("app.update.silent", false);
pref("app.update.staging.enabled", true);
pref("app.update.service.enabled", true);

pref("app.update.url", "https://aus5.mozilla.org/update/5/%PRODUCT%/%VERSION%/%BUILD_ID%/%PRODUCT_DEVICE%/%LOCALE%/%CHANNEL%/%OS_VERSION%/%DISTRIBUTION%/%DISTRIBUTION_VERSION%/%IMEI%/update.xml");
pref("app.update.channel", "@MOZ_UPDATE_CHANNEL@");

// Interval at which update manifest is fetched.  In units of seconds.
pref("app.update.interval", 86400); // 1 day
// Don't throttle background updates.
pref("app.update.download.backgroundInterval", 0);

// Retry update socket connections every 30 seconds in the cases of certain kinds of errors
pref("app.update.socket.retryTimeout", 30000);

// Max of 20 consecutive retries (total 10 minutes) before giving up and marking
// the update download as failed.
// Note: Offline errors will always retry when the network comes online.
pref("app.update.socket.maxErrors", 20);

// Enable update logging for now, to diagnose growing pains in the
// field.
pref("app.update.log", true);

// SystemUpdate API
pref("dom.system_update.active", "@mozilla.org/updates/update-prompt;1");
#else
// Explicitly disable the shutdown watchdog.  It's enabled by default.
// When the updater is disabled, we want to know about shutdown hangs.
pref("shutdown.watchdog.timeoutSecs", -1);
#endif

// Allow webapps update checking
pref("webapps.update.enabled", true);

// Check daily for apps updates.
pref("webapps.update.interval", 86400);

// Extensions preferences
pref("extensions.update.enabled", false);
pref("extensions.getAddons.cache.enabled", false);

// Context Menu
pref("ui.click_hold_context_menus", true);
pref("ui.click_hold_context_menus.delay", 400);

// Enable device storage
pref("device.storage.enabled", true);

// Enable pre-installed applications
pref("dom.webapps.useCurrentProfile", true);

// Enable system message
pref("dom.sysmsg.enabled", true);
pref("media.plugins.enabled", false);
pref("media.omx.enabled", true);
pref("media.rtsp.enabled", true);
pref("media.rtsp.video.enabled", true);

// Disable printing (particularly, window.print())
pref("dom.disable_window_print", true);

// Disable window.showModalDialog
pref("dom.disable_window_showModalDialog", true);

// Enable new experimental html forms
pref("dom.experimental_forms", true);
pref("dom.forms.number", true);

// Don't enable <input type=color> yet as we don't have a color picker
// implemented for b2g (bug 875751)
pref("dom.forms.color", false);

// This preference instructs the JS engine to discard the
// source of any privileged JS after compilation. This saves
// memory, but makes things like Function.prototype.toSource()
// fail.
pref("javascript.options.discardSystemSource", true);

// XXXX REMOVE FOR PRODUCTION. Turns on GC and CC logging
pref("javascript.options.mem.log", false);

// Increase mark slice time from 10ms to 30ms
pref("javascript.options.mem.gc_incremental_slice_ms", 30);

// Increase time to get more high frequency GC on benchmarks from 1000ms to 1500ms
pref("javascript.options.mem.gc_high_frequency_time_limit_ms", 1500);

pref("javascript.options.mem.gc_high_frequency_heap_growth_max", 300);
pref("javascript.options.mem.gc_high_frequency_heap_growth_min", 120);
pref("javascript.options.mem.gc_high_frequency_high_limit_mb", 40);
pref("javascript.options.mem.gc_high_frequency_low_limit_mb", 0);
pref("javascript.options.mem.gc_low_frequency_heap_growth", 120);
pref("javascript.options.mem.high_water_mark", 6);
pref("javascript.options.mem.gc_allocation_threshold_mb", 1);
pref("javascript.options.mem.gc_decommit_threshold_mb", 1);
pref("javascript.options.mem.gc_min_empty_chunk_count", 1);
pref("javascript.options.mem.gc_max_empty_chunk_count", 2);

// Show/Hide scrollbars when active/inactive
pref("ui.showHideScrollbars", 1);
pref("ui.useOverlayScrollbars", 1);
pref("ui.scrollbarFadeBeginDelay", 450);
pref("ui.scrollbarFadeDuration", 0);

// Scrollbar position follows the document `dir` attribute
pref("layout.scrollbar.side", 1);

// CSS Scroll Snapping
pref("layout.css.scroll-snap.enabled", true);

// Enable the ProcessPriorityManager, and give processes with no visible
// documents a 1s grace period before they're eligible to be marked as
// background. Background processes that are perceivable due to playing
// media are given a longer grace period to accomodate changing tracks, etc.
pref("dom.ipc.processPriorityManager.enabled", true);
pref("dom.ipc.processPriorityManager.backgroundGracePeriodMS", 1000);
pref("dom.ipc.processPriorityManager.backgroundPerceivableGracePeriodMS", 5000);
pref("dom.ipc.processPriorityManager.temporaryPriorityLockMS", 5000);

// Number of different background/foreground levels for background/foreground
// processes.  We use these different levels to force the low-memory killer to
// kill processes in a LRU order.
pref("dom.ipc.processPriorityManager.BACKGROUND.LRUPoolLevels", 5);
pref("dom.ipc.processPriorityManager.BACKGROUND_PERCEIVABLE.LRUPoolLevels", 4);

// Kernel parameters for process priorities.  These affect how processes are
// killed on low-memory and their relative CPU priorities.
//
// The kernel can only accept 6 (OomScoreAdjust, KillUnderKB) pairs. But it is
// okay, kernel will still kill processes with larger OomScoreAdjust first even
// its OomScoreAdjust don't have a corresponding KillUnderKB.

pref("hal.processPriorityManager.gonk.MASTER.OomScoreAdjust", 0);
pref("hal.processPriorityManager.gonk.MASTER.KillUnderKB", 4096);
pref("hal.processPriorityManager.gonk.MASTER.cgroup", "");

pref("hal.processPriorityManager.gonk.PREALLOC.OomScoreAdjust", 67);
pref("hal.processPriorityManager.gonk.PREALLOC.cgroup", "apps/bg_non_interactive");

pref("hal.processPriorityManager.gonk.FOREGROUND_HIGH.OomScoreAdjust", 67);
pref("hal.processPriorityManager.gonk.FOREGROUND_HIGH.KillUnderKB", 5120);
pref("hal.processPriorityManager.gonk.FOREGROUND_HIGH.cgroup", "apps/critical");

pref("hal.processPriorityManager.gonk.FOREGROUND.OomScoreAdjust", 134);
pref("hal.processPriorityManager.gonk.FOREGROUND.KillUnderKB", 6144);
pref("hal.processPriorityManager.gonk.FOREGROUND.cgroup", "apps");

pref("hal.processPriorityManager.gonk.FOREGROUND_KEYBOARD.OomScoreAdjust", 200);
pref("hal.processPriorityManager.gonk.FOREGROUND_KEYBOARD.cgroup", "apps");

pref("hal.processPriorityManager.gonk.BACKGROUND_PERCEIVABLE.OomScoreAdjust", 400);
pref("hal.processPriorityManager.gonk.BACKGROUND_PERCEIVABLE.KillUnderKB", 8192);
pref("hal.processPriorityManager.gonk.BACKGROUND_PERCEIVABLE.cgroup", "apps/bg_perceivable");

pref("hal.processPriorityManager.gonk.BACKGROUND.OomScoreAdjust", 667);
pref("hal.processPriorityManager.gonk.BACKGROUND.KillUnderKB", 20480);
pref("hal.processPriorityManager.gonk.BACKGROUND.cgroup", "apps/bg_non_interactive");

// Control group definitions (i.e., CPU priority groups) for B2G processes.
//
// memory_swappiness -   0 - The kernel will swap only to avoid an out of memory condition
// memory_swappiness -  60 - The default value.
// memory_swappiness - 100 - The kernel will swap aggressively.

// Foreground apps
pref("hal.processPriorityManager.gonk.cgroups.apps.cpu_shares", 1024);
pref("hal.processPriorityManager.gonk.cgroups.apps.cpu_notify_on_migrate", 0);
pref("hal.processPriorityManager.gonk.cgroups.apps.memory_swappiness", 10);

// Foreground apps with high priority, 16x more CPU than foreground ones
pref("hal.processPriorityManager.gonk.cgroups.apps/critical.cpu_shares", 16384);
pref("hal.processPriorityManager.gonk.cgroups.apps/critical.cpu_notify_on_migrate", 0);
pref("hal.processPriorityManager.gonk.cgroups.apps/critical.memory_swappiness", 0);

// Background perceivable apps, ~10x less CPU than foreground ones
pref("hal.processPriorityManager.gonk.cgroups.apps/bg_perceivable.cpu_shares", 103);
pref("hal.processPriorityManager.gonk.cgroups.apps/bg_perceivable.cpu_notify_on_migrate", 0);
pref("hal.processPriorityManager.gonk.cgroups.apps/bg_perceivable.memory_swappiness", 60);

// Background apps, ~20x less CPU than foreground ones and ~2x less than perceivable ones
pref("hal.processPriorityManager.gonk.cgroups.apps/bg_non_interactive.cpu_shares", 52);
pref("hal.processPriorityManager.gonk.cgroups.apps/bg_non_interactive.cpu_notify_on_migrate", 0);
pref("hal.processPriorityManager.gonk.cgroups.apps/bg_non_interactive.memory_swappiness", 100);

// By default the compositor thread on gonk runs without real-time priority.  RT
// priority can be enabled by setting this pref to a value between 1 and 99.
// Note that audio processing currently runs at RT priority 2 or 3 at most.
//
// If RT priority is disabled, then the compositor nice value is used. We prefer
// to use a nice value of -4, which matches Android's preferences. Setting a preference
// of RT priority 1 would mean it is higher than audio, which is -16. The compositor
// priority must be below the audio thread.
//
// Do not change these values without gfx team review.
pref("hal.gonk.COMPOSITOR.rt_priority", 0);
pref("hal.gonk.COMPOSITOR.nice", -4);

// Fire a memory pressure event when the system has less than Xmb of memory
// remaining.  You should probably set this just above Y.KillUnderKB for
// the highest priority class Y that you want to make an effort to keep alive.
// (For example, we want BACKGROUND_PERCEIVABLE to stay alive.)  If you set
// this too high, then we'll send out a memory pressure event every Z seconds
// (see below), even while we have processes that we would happily kill in
// order to free up memory.
pref("gonk.notifyHardLowMemUnderKB", 14336);

// Fire a memory pressure event when the system has less than Xmb of memory
// remaining and then switch to the hard trigger, see above.  This should be
// placed above the BACKGROUND priority class.
pref("gonk.notifySoftLowMemUnderKB", 43008);

// We wait this long before polling the memory-pressure fd after seeing one
// memory pressure event.  (When we're not under memory pressure, we sit
// blocked on a poll(), and this pref has no effect.)
pref("gonk.systemMemoryPressureRecoveryPollMS", 5000);

// Enable pre-launching content processes for improved startup time
// (hiding latency).
pref("dom.ipc.processPrelaunch.enabled", true);
// Wait this long before pre-launching a new subprocess.
pref("dom.ipc.processPrelaunch.delayMs", 5000);

pref("dom.ipc.reuse_parent_app", false);

// When a process receives a system message, we hold a CPU wake lock on its
// behalf for this many seconds, or until it handles the system message,
// whichever comes first.
pref("dom.ipc.systemMessageCPULockTimeoutSec", 30);

// Ignore the "dialog=1" feature in window.open.
pref("dom.disable_window_open_dialog_feature", true);

// Enable before keyboard events and after keyboard events.
pref("dom.beforeAfterKeyboardEvent.enabled", true);

// Screen reader support
pref("accessibility.accessfu.activate", 2);
pref("accessibility.accessfu.quicknav_modes", "Link,Heading,FormElement,Landmark,ListItem");
// Active quicknav mode, index value of list from quicknav_modes
pref("accessibility.accessfu.quicknav_index", 0);
// Setting for an utterance order (0 - description first, 1 - description last).
pref("accessibility.accessfu.utterance", 1);
// Whether to skip images with empty alt text
pref("accessibility.accessfu.skip_empty_images", true);
// Setting to change the verbosity of entered text (0 - none, 1 - characters,
// 2 - words, 3 - both)
pref("accessibility.accessfu.keyboard_echo", 3);

// Enable hit-target fluffing
pref("ui.touch.radius.enabled", true);
pref("ui.touch.radius.leftmm", 3);
pref("ui.touch.radius.topmm", 5);
pref("ui.touch.radius.rightmm", 3);
pref("ui.touch.radius.bottommm", 2);

pref("ui.mouse.radius.enabled", true);
pref("ui.mouse.radius.leftmm", 3);
pref("ui.mouse.radius.topmm", 5);
pref("ui.mouse.radius.rightmm", 3);
pref("ui.mouse.radius.bottommm", 2);

// Disable native prompt
pref("browser.prompt.allowNative", false);

// Minimum delay in milliseconds between network activity notifications (0 means
// no notifications). The delay is the same for both download and upload, though
// they are handled separately. This pref is only read once at startup:
// a restart is required to enable a new value.
pref("network.activity.blipIntervalMilliseconds", 250);

// By default we want the NetworkManager service to manage Gecko's offline
// status for us according to the state of Wifi/cellular data connections.
// In some environments, such as the emulator or hardware with other network
// connectivity, this is not desireable, however, in which case this pref
// can be flipped to false.
pref("network.gonk.manage-offline-status", true);

// On Firefox Mulet, we can't enable shared JSM scope
// as it breaks most Firefox JSMs (see bug 961777)
#ifndef MOZ_MULET
// Break any JSMs or JS components that rely on shared scope
#ifndef DEBUG
pref("jsloader.reuseGlobal", true);
#endif
#endif

// Enable font inflation for browser tab content.
pref("font.size.inflation.minTwips", 120);
// And disable it for lingering master-process UI.
pref("font.size.inflation.disabledInMasterProcess", true);

// Enable freeing dirty pages when minimizing memory; this reduces memory
// consumption when applications are sent to the background.
pref("memory.free_dirty_pages", true);

// Enable the Linux-specific, system-wide memory reporter.
pref("memory.system_memory_reporter", true);

// Don't dump memory reports on OOM, by default.
pref("memory.dump_reports_on_oom", false);

pref("layout.framevisibility.numscrollportwidths", 1);
pref("layout.framevisibility.numscrollportheights", 1);

// Enable native identity (persona/browserid)
pref("dom.identity.enabled", true);

// Wait up to this much milliseconds when orientation changed
pref("layers.orientation.sync.timeout", 1000);

// Animate the orientation change
pref("b2g.orientation.animate", true);

// Don't discard WebGL contexts for foreground apps on memory
// pressure.
pref("webgl.can-lose-context-in-foreground", false);

// Allow nsMemoryInfoDumper to create a fifo in the temp directory.  We use
// this fifo to trigger about:memory dumps, among other things.
pref("memory_info_dumper.watch_fifo.enabled", true);
pref("memory_info_dumper.watch_fifo.directory", "/data/local");

// See ua-update.json.in for the packaged UA override list
pref("general.useragent.updates.enabled", true);
pref("general.useragent.updates.url", "https://dynamicua.cdn.mozilla.net/0/%APP_ID%");
pref("general.useragent.updates.interval", 604800); // 1 week
pref("general.useragent.updates.retry", 86400); // 1 day
// Device ID can be composed of letter, numbers, hyphen ("-") and dot (".")
pref("general.useragent.device_id", "");

// Add Mozilla AudioChannel APIs.
pref("media.useAudioChannelAPI", true);

pref("b2g.version", @MOZ_B2G_VERSION@);
pref("b2g.osName", @MOZ_B2G_OS_NAME@);

// Disable console buffering to save memory.
pref("consoleservice.buffered", false);

#ifdef MOZ_WIDGET_GONK
// Performance testing suggests 2k is a better page size for SQLite.
pref("toolkit.storage.pageSize", 2048);
#endif

// The url of the manifest we use for ADU pings.
pref("ping.manifestURL", "https://marketplace.firefox.com/packaged.webapp");

// Enable the disk space watcher
pref("disk_space_watcher.enabled", true);

// SNTP preferences.
pref("network.sntp.maxRetryCount", 10);
pref("network.sntp.refreshPeriod", 86400); // In seconds.
pref("network.sntp.pools", // Servers separated by ';'.
     "0.pool.ntp.org;1.pool.ntp.org;2.pool.ntp.org;3.pool.ntp.org");
pref("network.sntp.port", 123);
pref("network.sntp.timeout", 30); // In seconds.

// Allow ADB to run for this many hours before disabling
// (only applies when marionette is disabled)
// 0 disables the timer.
pref("b2g.adb.timeout-hours", 12);

// InputMethod so we can do soft keyboards
pref("dom.mozInputMethod.enabled", true);

// Absolute path to the devtool unix domain socket file used
// to communicate with a usb cable via adb forward
pref("devtools.debugger.unix-domain-socket", "/data/local/debugger-socket");

// enable Skia/GL (OpenGL-accelerated 2D drawing) for large enough 2d canvases,
// falling back to Skia/software for smaller canvases
#ifdef MOZ_WIDGET_GONK
pref("gfx.canvas.azure.backends", "skia");
pref("gfx.canvas.azure.accelerated", true);
#endif

// Turn on dynamic cache size for Skia
pref("gfx.canvas.skiagl.dynamic-cache", true);

// Limit skia to canvases the size of the device screen or smaller
pref("gfx.canvas.max-size-for-skia-gl", -1);

// enable fence with readpixels for SurfaceStream
pref("gfx.gralloc.fence-with-readpixels", true);

// enable screen mirroring to external display
pref("gfx.screen-mirroring.enabled", true);

// The url of the page used to display network error details.
pref("b2g.neterror.url", "net_error.html");

// The origin used for the shared themes uri space.
pref("b2g.theme.origin", "app://theme.gaiamobile.org");
pref("dom.mozApps.themable", true);
pref("dom.mozApps.selected_theme", "default_theme.gaiamobile.org");

// Enable PAC generator for B2G.
pref("network.proxy.pac_generator", true);

// List of app origins to apply browsing traffic proxy setting, separated by
// comma.  Specify '*' in the list to apply to all apps.
pref("network.proxy.browsing.app_origins", "app://system.gaiamobile.org");

// Enable Web Speech synthesis API
pref("media.webspeech.synth.enabled", true);

// Enable Web Speech recognition API
pref("media.webspeech.recognition.enable", true);

// Downloads API
pref("dom.mozDownloads.enabled", true);
pref("dom.downloads.max_retention_days", 7);

// External Helper Application Handling
//
// All external helper application handling can require the docshell to be
// active before allowing the external helper app service to handle content.
//
// To prevent SD card DoS attacks via downloads we disable background handling.
//
pref("security.exthelperapp.disable_background_handling", true);

// Inactivity time in milliseconds after which we shut down the OS.File worker.
pref("osfile.reset_worker_delay", 5000);

// APZ physics settings, tuned by UX designers
pref("apz.axis_lock.mode", 2); // Use "sticky" axis locking
pref("apz.fling_curve_function_x1", "0.41");
pref("apz.fling_curve_function_y1", "0.0");
pref("apz.fling_curve_function_x2", "0.80");
pref("apz.fling_curve_function_y2", "1.0");
pref("apz.fling_curve_threshold_inches_per_ms", "0.01");
pref("apz.fling_friction", "0.0019");
pref("apz.max_velocity_inches_per_ms", "0.07");
pref("apz.overscroll.enabled", true);
pref("apz.displayport_expiry_ms", 0); // causes issues on B2G, see bug 1250924

// For event-regions based hit-testing
pref("layout.event-regions.enabled", true);

// This preference allows FirefoxOS apps (and content, I think) to force
// the use of software (instead of hardware accelerated) 2D canvases by
// creating a context like this:
//
//   canvas.getContext('2d', { willReadFrequently: true })
//
// Using a software canvas can save memory when JS calls getImageData()
// on the canvas frequently. See bug 884226.
pref("gfx.canvas.willReadFrequently.enable", true);

// Disable autofocus until we can have it not bring up the keyboard.
// https://bugzilla.mozilla.org/show_bug.cgi?id=965763
pref("browser.autofocus", false);

// Enable wakelock
pref("dom.wakelock.enabled", true);

// Enable webapps add-ons
pref("dom.apps.customization.enabled", true);
pref("dom.apps.reviewer_paths", "/reviewers/,/extension/reviewers/");

// New implementation to unify touch-caret and selection-carets.
pref("layout.accessiblecaret.enabled", true);

// Show the selection bars at the two ends of the selection highlight. Required
// by the spec in bug 921965.
pref("layout.accessiblecaret.bar.enabled", true);

// Hide the caret in cursor mode after 3 seconds.
pref("layout.accessiblecaret.timeout_ms", 3000);

// APZ on real devices supports long tap events.
#ifdef MOZ_WIDGET_GONK
pref("layout.accessiblecaret.use_long_tap_injector", false);
#endif

// Hide carets and text selection dialog during scrolling.
pref("layout.accessiblecaret.always_show_when_scrolling", false);

// Enable sync and mozId with Firefox Accounts.
pref("services.sync.fxaccounts.enabled", true);
pref("identity.fxaccounts.enabled", true);

// Mobile Identity API.
pref("services.mobileid.server.uri", "https://msisdn.services.mozilla.com");

pref("identity.fxaccounts.remote.oauth.uri", "https://oauth.accounts.firefox.com/v1");
pref("identity.fxaccounts.remote.profile.uri", "https://profile.accounts.firefox.com/v1");

// Disable Firefox Accounts device registration until bug 1238895 is fixed.
pref("identity.fxaccounts.skipDeviceRegistration", true);

// Enable mapped array buffer.
#ifndef XP_WIN
pref("dom.mapped_arraybuffer.enabled", true);
#endif

// SystemUpdate API
pref("dom.system_update.enabled", true);

// UDPSocket API
pref("dom.udpsocket.enabled", true);

// Enable TV Manager API
pref("dom.tv.enabled", true);

// Enable Inputport Manager API
pref("dom.inputport.enabled", true);

pref("dom.mozSettings.SettingsDB.debug.enabled", true);
pref("dom.mozSettings.SettingsManager.debug.enabled", true);
pref("dom.mozSettings.SettingsRequestManager.debug.enabled", true);
pref("dom.mozSettings.SettingsService.debug.enabled", true);

pref("dom.mozSettings.SettingsDB.verbose.enabled", false);
pref("dom.mozSettings.SettingsManager.verbose.enabled", false);
pref("dom.mozSettings.SettingsRequestManager.verbose.enabled", false);
pref("dom.mozSettings.SettingsService.verbose.enabled", false);

// Controlling whether we want to allow forcing some Settings
// IndexedDB transactions to be opened as readonly or keep everything as
// readwrite.
pref("dom.mozSettings.allowForceReadOnly", false);

// Comma separated list of activity names that can only be provided by
// the system app in dev mode.
pref("dom.activities.developer_mode_only", "import-app");

// mulet apparently loads firefox.js as well as b2g.js, so we have to explicitly
// disable serviceworkers and push here to get them disabled in mulet.
pref("dom.serviceWorkers.enabled", false);
pref("dom.push.enabled", false);

#if defined(RELEASE_BUILD)
// Bug 1278848: Enable service worker notifications on release B2G once
// they're ready.
pref("dom.webnotifications.serviceworker.enabled", false);
#else
pref("dom.webnotifications.serviceworker.enabled", true);
#endif

// Retain at most 10 processes' layers buffers
pref("layers.compositor-lru-size", 10);

// Enable Cardboard VR on mobile, assuming VR at all is enabled
pref("dom.vr.cardboard.enabled", true);

// In B2G by deafult any AudioChannelAgent is muted when created.
pref("dom.audiochannel.mutedByDefault", true);

// The app origin of bluetooth app, which is responsible for listening pairing
// requests.
pref("dom.bluetooth.app-origin", "app://bluetooth.gaiamobile.org");

// Enable W3C WebBluetooth API and disable B2G only GATT client API.
pref("dom.bluetooth.webbluetooth.enabled", false);

// Default device name for Presentation API
pref("dom.presentation.device.name", "Firefox OS");

// Enable notification of performance timing
pref("dom.performance.enable_notify_performance_timing", true);

// Multi-screen
pref("b2g.multiscreen.chrome_remote_url", "chrome://b2g/content/shell_remote.html");
pref("b2g.multiscreen.system_remote_url", "index_remote.html");

// Audio competing between tabs
pref("dom.audiochannel.audioCompeting", false);

// Because we can't have nice things.
#ifdef MOZ_GRAPHENE
#include ../graphene/graphene.js
#endif