Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2530 insertions, 0 deletions

diff --git a/browser/app/profile/firefox.js b/browser/app/profile/firefox.js
new file mode 100644
index 0000000000..5aad2ddcf4
--- /dev/null
+++ b/browser/app/profile/firefox.js
@@ -0,0 +1,2530 @@
+#filter dumbComments emptyLines substitution
+
+// -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
+// 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 desktop Firefox belong in this file
+// (unless there is a compelling and documented reason for them to belong in
+// another file).
+//
+// Please indent all prefs defined within #ifdef/#ifndef conditions. This
+// improves readability, particular for conditional blocks that exceed a single
+// screen.
+
+#ifdef XP_UNIX
+  #ifndef XP_MACOSX
+    #define UNIX_BUT_NOT_MAC
+  #endif
+#endif
+
+pref("browser.hiddenWindowChromeURL", "chrome://browser/content/hiddenWindowMac.xhtml");
+
+// Enables some extra Extension System Logging (can reduce performance)
+pref("extensions.logging.enabled", false);
+
+// Disables strict compatibility, making addons compatible-by-default.
+pref("extensions.strictCompatibility", false);
+
+// Temporary preference to forcibly make themes more safe with Australis even if
+// extensions.checkCompatibility=false has been set.
+pref("extensions.checkCompatibility.temporaryThemeOverride_minAppVersion", "29.0a1");
+
+pref("extensions.webextPermissionPrompts", true);
+pref("extensions.webextOptionalPermissionPrompts", true);
+// If enabled, install origin permission verification happens after addons are downloaded.
+pref("extensions.postDownloadThirdPartyPrompt", true);
+
+// Preferences for AMO integration
+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.search.browseURL", "https://addons.mozilla.org/%LOCALE%/firefox/search?q=%TERMS%&platform=%OS%&appver=%VERSION%");
+pref("extensions.getAddons.link.url", "https://addons.mozilla.org/%LOCALE%/firefox/");
+pref("extensions.getAddons.langpacks.url", "https://services.addons.mozilla.org/api/v4/addons/language-tools/?app=firefox&type=language&appversion=%VERSION%");
+pref("extensions.getAddons.discovery.api_url", "https://services.addons.mozilla.org/api/v4/discovery/?lang=%LOCALE%&edition=%DISTRIBUTION%");
+
+// Use bloomfilters for the addons blocklist, instead of JSON only.
+pref("extensions.blocklist.useMLBF", true);
+pref("extensions.blocklist.useMLBF.stashes", true);
+
+// The URL for the privacy policy related to recommended extensions.
+pref("extensions.recommendations.privacyPolicyUrl", "https://www.mozilla.org/privacy/firefox/?utm_source=firefox-browser&utm_medium=firefox-browser&utm_content=privacy-policy-link#addons");
+// The URL for Firefox Color, recommended on the theme page in about:addons.
+pref("extensions.recommendations.themeRecommendationUrl", "https://color.firefox.com/?utm_source=firefox-browser&utm_medium=firefox-browser&utm_content=theme-footer-link");
+
+pref("extensions.update.autoUpdateDefault", true);
+
+// Check AUS for system add-on updates.
+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.systemAddon.update.enabled", true);
+
+// Disable add-ons that are not installed by the user in all scopes by default.
+// See the SCOPE constants in AddonManager.jsm for values to use here.
+pref("extensions.autoDisableScopes", 15);
+// Scopes to scan for changes at startup.
+pref("extensions.startupScanScopes", 0);
+
+pref("extensions.geckoProfiler.acceptedExtensionIds", "geckoprofiler@mozilla.com,quantum-foxfooding@mozilla.com,raptor@mozilla.org");
+
+
+pref("extensions.webextensions.remote", true);
+pref("extensions.webextensions.background-delayed-startup", true);
+
+// Require signed add-ons by default
+pref("extensions.langpacks.signatures.required", true);
+pref("xpinstall.signatures.required", true);
+pref("xpinstall.signatures.devInfoURL", "https://wiki.mozilla.org/Addons/Extension_Signing");
+
+// Enable extensionStorage storage actor by default
+pref("devtools.storage.extensionStorage.enabled", true);
+
+// Dictionary download preference
+pref("browser.dictionaries.download.url", "https://addons.mozilla.org/%LOCALE%/firefox/language-tools/");
+
+// At startup, should we check to see if the installation
+// date is older than some threshold
+pref("app.update.checkInstallTime", true);
+
+// The number of days a binary is permitted to be old without checking is defined in
+// firefox-branding.js (app.update.checkInstallTime.days)
+
+// The minimum delay in seconds for the timer to fire between the notification
+// of each consumer of the timer manager.
+// minimum=30 seconds, default=120 seconds, and maximum=300 seconds
+pref("app.update.timerMinimumDelay", 120);
+
+// The minimum delay in milliseconds for the first firing after startup of the timer
+// to notify consumers of the timer manager.
+// minimum=10 seconds, default=30 seconds, and maximum=120 seconds
+pref("app.update.timerFirstInterval", 30000);
+
+// App-specific update preferences
+
+// The interval to check for updates (app.update.interval) is defined in
+// firefox-branding.js
+
+// Enables some extra Application Update Logging (can reduce performance)
+pref("app.update.log", false);
+// Causes Application Update Logging to be sent to a file in the profile
+// directory. This preference is automatically disabled on application start to
+// prevent it from being left on accidentally. Turning this pref on enables
+// logging, even if app.update.log is false.
+pref("app.update.log.file", false);
+
+// The number of general background check failures to allow before notifying the
+// user of the failure. User initiated update checks always notify the user of
+// the failure.
+pref("app.update.backgroundMaxErrors", 10);
+
+// Ids of the links to the "What's new" update documentation
+pref("app.update.link.updateAvailableWhatsNew", "update-available-whats-new");
+pref("app.update.link.updateManualWhatsNew", "update-manual-whats-new");
+
+// How many times we should let downloads fail before prompting the user to
+// download a fresh installer.
+pref("app.update.download.promptMaxAttempts", 2);
+
+// How many times we should let an elevation prompt fail before prompting the user to
+// download a fresh installer.
+pref("app.update.elevation.promptMaxAttempts", 2);
+
+// If set to true, a message will be displayed in the hamburger menu while
+// an update is being downloaded.
+pref("app.update.notifyDuringDownload", false);
+
+// If set to true, the Update Service will automatically download updates if the
+// user can apply updates. This pref is no longer used on Windows, except as the
+// default value to migrate to the new location that this data is now stored
+// (which is in a file in the update directory). Because of this, this pref
+// should no longer be used directly. Instead, getAppUpdateAutoEnabled and
+// getAppUpdateAutoEnabled from UpdateUtils.jsm should be used.
+#ifndef XP_WIN
+  pref("app.update.auto", true);
+#endif
+
+// If set to true, the Update Service will apply updates in the background
+// when it finishes downloading them.
+pref("app.update.staging.enabled", true);
+
+// Update service URL:
+// app.update.url was removed in Bug 1568994
+// app.update.url.manual is in branding section
+// app.update.url.details is in branding section
+
+// app.update.badgeWaitTime is in branding section
+// app.update.interval is in branding section
+// app.update.promptWaitTime is in branding section
+
+// Whether or not to attempt using the service for updates.
+#ifdef MOZ_MAINTENANCE_SERVICE
+  pref("app.update.service.enabled", true);
+#endif
+
+#ifdef MOZ_BITS_DOWNLOAD
+  // If set to true, the Update Service will attempt to use Windows BITS to
+  // download updates and will fallback to downloading internally if that fails.
+  pref("app.update.BITS.enabled", true);
+#endif
+
+pref("app.update.langpack.enabled", true);
+
+// Symmetric (can be overridden by individual extensions) update preferences.
+// e.g.
+//  extensions.{GUID}.update.enabled
+//  extensions.{GUID}.update.url
+//  .. etc ..
+//
+pref("extensions.update.enabled", true);
+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%");
+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.interval", 86400);  // Check for updates to Extensions and
+                                            // Themes every day
+
+pref("lightweightThemes.getMoreURL", "https://addons.mozilla.org/%LOCALE%/firefox/themes");
+
+#if defined(MOZ_WIDEVINE_EME)
+  pref("browser.eme.ui.enabled", true);
+#else
+  pref("browser.eme.ui.enabled", false);
+#endif
+
+// UI tour experience.
+pref("browser.uitour.enabled", true);
+pref("browser.uitour.loglevel", "Error");
+pref("browser.uitour.requireSecure", true);
+pref("browser.uitour.themeOrigin", "https://addons.mozilla.org/%LOCALE%/firefox/themes/");
+pref("browser.uitour.url", "https://www.mozilla.org/%LOCALE%/firefox/%VERSION%/tour/");
+// How long to show a Hearbeat survey (two hours, in seconds)
+pref("browser.uitour.surveyDuration", 7200);
+
+pref("keyword.enabled", true);
+
+// Fixup whitelists, the urlbar won't try to search for these words, but will
+// instead consider them valid TLDs. Don't check these directly, use
+// Services.uriFixup.isDomainKnown() instead.
+pref("browser.fixup.domainwhitelist.localhost", true);
+// https://tools.ietf.org/html/rfc2606
+pref("browser.fixup.domainsuffixwhitelist.test", true);
+pref("browser.fixup.domainsuffixwhitelist.example", true);
+pref("browser.fixup.domainsuffixwhitelist.invalid", true);
+pref("browser.fixup.domainsuffixwhitelist.localhost", true);
+// https://tools.ietf.org/html/draft-wkumari-dnsop-internal-00
+pref("browser.fixup.domainsuffixwhitelist.internal", true);
+// https://tools.ietf.org/html/rfc6762
+pref("browser.fixup.domainsuffixwhitelist.local", true);
+
+// Whether to always go through the DNS server before sending a single word
+// search string, that may contain a valid host, to a search engine.
+pref("browser.fixup.dns_first_for_single_words", false);
+
+#ifdef UNIX_BUT_NOT_MAC
+  pref("general.autoScroll", false);
+#else
+  pref("general.autoScroll", true);
+#endif
+
+// UI density of the browser chrome. This mostly affects toolbarbutton
+// and urlbar spacing. The possible values are 0=normal, 1=compact, 2=touch.
+pref("browser.uidensity", 0);
+// Whether Firefox will automatically override the uidensity to "touch"
+// while the user is in a touch environment (such as Windows tablet mode).
+pref("browser.touchmode.auto", true);
+
+// At startup, check if we're the default browser and prompt user if not.
+pref("browser.shell.checkDefaultBrowser", true);
+pref("browser.shell.shortcutFavicons",true);
+pref("browser.shell.mostRecentDateSetAsDefault", "");
+pref("browser.shell.skipDefaultBrowserCheckOnFirstRun", true);
+pref("browser.shell.didSkipDefaultBrowserCheckOnFirstRun", false);
+pref("browser.shell.defaultBrowserCheckCount", 0);
+#ifdef EARLY_BETA_OR_EARLIER
+pref("browser.defaultbrowser.notificationbar", true);
+#else
+pref("browser.defaultbrowser.notificationbar", false);
+#endif
+pref("browser.defaultbrowser.notificationbar.checkcount", 0);
+pref("browser.defaultbrowser.notificationbar.checklimit", 10000);
+
+// 0 = blank, 1 = home (browser.startup.homepage), 2 = last visited page, 3 = resume previous browser session
+// The behavior of option 3 is detailed at: http://wiki.mozilla.org/Session_Restore
+pref("browser.startup.page",                1);
+pref("browser.startup.homepage",            "about:home");
+#ifdef NIGHTLY_BUILD
+pref("browser.startup.homepage.abouthome_cache.enabled", true);
+#else
+pref("browser.startup.homepage.abouthome_cache.enabled", false);
+#endif
+pref("browser.startup.homepage.abouthome_cache.loglevel", "Warn");
+
+// Whether we should skip the homepage when opening the first-run page
+pref("browser.startup.firstrunSkipsHomepage", true);
+
+// Show an about:blank window as early as possible for quick startup feedback.
+// Held to nightly on Linux due to bug 1450626.
+// Disabled on Mac because the bouncing dock icon already provides feedback.
+#if defined(XP_WIN) || defined(MOZ_WIDGET_GTK) && defined(NIGHTLY_BUILD)
+  pref("browser.startup.blankWindow", true);
+#else
+  pref("browser.startup.blankWindow", false);
+#endif
+
+// Show a skeleton UI window prior to loading libxul. Only visible for windows
+// users as it is not implemented anywhere else.
+#if defined(XP_WIN)
+#ifdef NIGHTLY_BUILD
+pref("browser.startup.preXulSkeletonUI", true);
+#else
+pref("browser.startup.preXulSkeletonUI", false);
+#endif
+#endif
+
+// Don't create the hidden window during startup on
+// platforms that don't always need it (Win/Linux).
+pref("toolkit.lazyHiddenWindow", true);
+
+pref("browser.slowStartup.notificationDisabled", false);
+pref("browser.slowStartup.timeThreshold", 20000);
+pref("browser.slowStartup.maxSamples", 5);
+
+pref("browser.chrome.site_icons", true);
+// browser.warnOnQuit == false will override all other possible prompts when quitting or restarting
+pref("browser.warnOnQuit", true);
+pref("browser.fullscreen.autohide", true);
+pref("browser.overlink-delay", 80);
+
+// Whether using `ctrl` when hitting return/enter in the URL bar
+// (or clicking 'go') should prefix 'www.' and suffix
+// browser.fixup.alternate.suffix to the URL bar value prior to
+// navigating.
+pref("browser.urlbar.ctrlCanonizesURLs", true);
+
+// Whether we announce to screen readers when tab-to-search results are
+// inserted.
+pref("browser.urlbar.accessibility.tabToSearch.announceResults", true);
+
+// Control autoFill behavior
+pref("browser.urlbar.autoFill", true);
+
+// Whether to warm up network connections for autofill or search results.
+pref("browser.urlbar.speculativeConnect.enabled", true);
+
+// Whether bookmarklets should be filtered out of Address Bar matches.
+// This is enabled for security reasons, when true it is still possible to
+// search for bookmarklets typing "javascript: " followed by the actual query.
+pref("browser.urlbar.filter.javascript", true);
+
+// Enable a certain level of urlbar logging to the Browser Console. See Log.jsm.
+pref("browser.urlbar.loglevel", "Error");
+
+// the maximum number of results to show in autocomplete when doing richResults
+pref("browser.urlbar.maxRichResults", 10);
+
+// The maximum number of historical search results to show.
+pref("browser.urlbar.maxHistoricalSearchSuggestions", 2);
+
+// The default behavior for the urlbar can be configured to use any combination
+// of the match filters with each additional filter adding more results (union).
+pref("browser.urlbar.suggest.bookmark",             true);
+pref("browser.urlbar.suggest.history",              true);
+pref("browser.urlbar.suggest.openpage",             true);
+pref("browser.urlbar.suggest.searches",             true);
+pref("browser.urlbar.suggest.topsites",             true);
+pref("browser.urlbar.suggest.engines",              true);
+
+// As a user privacy measure, don't fetch search suggestions if a pasted string
+// is longer than this.
+pref("browser.urlbar.maxCharsForSearchSuggestions", 100);
+
+pref("browser.urlbar.trimURLs", true);
+
+// If changed to true, copying the entire URL from the location bar will put the
+// human readable (percent-decoded) URL on the clipboard.
+pref("browser.urlbar.decodeURLsOnCopy", false);
+
+// Whether or not to move tabs into the active window when using the "Switch to
+// Tab" feature of the awesomebar.
+pref("browser.urlbar.switchTabs.adoptIntoActiveWindow", false);
+
+// Whether addresses and search results typed into the address bar
+// should be opened in new tabs by default.
+pref("browser.urlbar.openintab", false);
+
+// If true, we show tail suggestions when available.
+pref("browser.urlbar.richSuggestions.tail", true);
+
+// Controls the empty search behavior in Search Mode:
+//  0 - Show nothing
+//  1 - Show search history
+//  2 - Show search and browsing history
+pref("browser.urlbar.update2.emptySearchBehavior", 0);
+
+// Whether the urlbar displays one-offs to filter searches to history,
+// bookmarks, or tabs.
+pref("browser.urlbar.shortcuts.bookmarks", true);
+pref("browser.urlbar.shortcuts.tabs", true);
+pref("browser.urlbar.shortcuts.history", true);
+
+pref("browser.urlbar.eventTelemetry.enabled", false);
+
+// When we send events to Urlbar extensions, we wait this amount of time in
+// milliseconds for them to respond before timing out.
+pref("browser.urlbar.extension.timeout", 400);
+
+// Controls when to DNS resolve single word search strings, after they were
+// searched for. If the string is resolved as a valid host, show a
+// "Did you mean to go to 'host'" prompt.
+// 0 - never resolve; 1 - use heuristics (default); 2 - always resolve
+pref("browser.urlbar.dnsResolveSingleWordsAfterSearch", 1);
+
+// Whether IME composition should close the results panel.
+// The default value is true because some IME open a picker panel, and we end
+// up with two panels on top of each other. Since for now we can't detect that
+// we leave this choice to the user, hopefully in the future this can be flipped
+// for everyone.
+pref("browser.urlbar.imeCompositionClosesPanel", true);
+
+pref("browser.altClickSave", false);
+
+// Enable logging downloads operations to the Console.
+pref("browser.download.loglevel", "Error");
+
+// Number of milliseconds to wait for the http headers (and thus
+// the Content-Disposition filename) before giving up and falling back to
+// picking a filename without that info in hand so that the user sees some
+// feedback from their action.
+pref("browser.download.saveLinkAsFilenameTimeout", 4000);
+
+pref("browser.download.useDownloadDir", true);
+pref("browser.download.folderList", 1);
+pref("browser.download.manager.addToRecentDocs", true);
+pref("browser.download.manager.resumeOnWakeDelay", 10000);
+
+// This allows disabling the animated notifications shown by
+// the Downloads Indicator when a download starts or completes.
+pref("browser.download.animateNotifications", true);
+
+// This records whether or not the panel has been shown at least once.
+pref("browser.download.panel.shown", false);
+
+// This records whether or not to show the 'Open in system viewer' context menu item when appropriate
+pref("browser.download.openInSystemViewerContextMenuItem", true);
+
+// This records whether or not to show the 'Always open...' context menu item when appropriate
+pref("browser.download.alwaysOpenInSystemViewerContextMenuItem", true);
+
+// Open downloaded file types internally for the given types.
+// This is a comma-separated list, the empty string ("") means no types are
+// viewable internally.
+pref("browser.download.viewableInternally.enabledTypes", "xml,svg,webp,avif");
+
+
+// This controls whether the button is automatically shown/hidden depending
+// on whether there are downloads to show.
+pref("browser.download.autohideButton", true);
+
+#ifndef XP_MACOSX
+  pref("browser.helperApps.deleteTempFileOnExit", true);
+#endif
+
+// This controls the visibility of the radio button in the
+// Unknown Content Type (Helper App) dialog that will open
+// the content in the browser for PDF and for other
+// Viewable Internally types
+// (see browser.download.viewableInternally.enabledTypes)
+pref("browser.helperApps.showOpenOptionForPdfJS", true);
+pref("browser.helperApps.showOpenOptionForViewableInternally", true);
+
+// search engines URL
+pref("browser.search.searchEnginesURL",      "https://addons.mozilla.org/%LOCALE%/firefox/search-engines/");
+
+// search bar results always open in a new tab
+pref("browser.search.openintab", false);
+
+// context menu searches open in the foreground
+pref("browser.search.context.loadInBackground", false);
+
+// comma seperated list of of engines to hide in the search panel.
+pref("browser.search.hiddenOneOffs", "");
+
+// Mirrors whether the search-container widget is in the navigation toolbar.
+pref("browser.search.widget.inNavBar", false);
+
+// Enables display of the options for the user using a separate default search
+// engine in private browsing mode.
+pref("browser.search.separatePrivateDefault.ui.enabled", false);
+// The maximum amount of times the private default banner is shown.
+pref("browser.search.separatePrivateDefault.ui.banner.max", 0);
+
+// Enables the display of the Mozilla VPN banner in private browsing windows
+pref("browser.privatebrowsing.vpnpromourl", "https://vpn.mozilla.org/?utm_source=firefox-browser&utm_medium=firefox-%CHANNEL%-browser&utm_campaign=private-browsing-vpn-link");
+
+pref("browser.sessionhistory.max_entries", 50);
+
+// Built-in default permissions.
+pref("permissions.manager.defaultsUrl", "resource://app/defaults/permissions");
+
+// Set default fallback values for site permissions we want
+// the user to be able to globally change.
+pref("permissions.default.camera", 0);
+pref("permissions.default.microphone", 0);
+pref("permissions.default.geo", 0);
+pref("permissions.default.xr", 0);
+pref("permissions.default.desktop-notification", 0);
+pref("permissions.default.shortcuts", 0);
+
+pref("permissions.desktop-notification.postPrompt.enabled", true);
+pref("permissions.desktop-notification.notNow.enabled", false);
+
+pref("permissions.fullscreen.allowed", false);
+
+// 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);
+
+// handle external links (i.e. links opened from a different application)
+// default: use browser.link.open_newwindow
+// 1-3: see browser.link.open_newwindow for interpretation
+pref("browser.link.open_newwindow.override.external", -1);
+
+// 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", 2);
+
+// If true, this pref causes windows opened by window.open to be forced into new
+// tabs (rather than potentially opening separate windows, depending on
+// window.open arguments) when the browser is in fullscreen mode.
+// We set this differently on Mac because the fullscreen implementation there is
+// different.
+#ifdef XP_MACOSX
+  pref("browser.link.open_newwindow.disabled_in_fullscreen", true);
+#else
+  pref("browser.link.open_newwindow.disabled_in_fullscreen", false);
+#endif
+
+// Tabbed browser
+pref("browser.tabs.closeTabByDblclick", false);
+pref("browser.tabs.closeWindowWithLastTab", true);
+pref("browser.tabs.allowTabDetach", true);
+// Open related links to a tab, e.g., link in current tab, at next to the
+// current tab if |insertRelatedAfterCurrent| is true.  Otherwise, always
+// append new tab to the end.
+pref("browser.tabs.insertRelatedAfterCurrent", true);
+// Open all links, e.g., bookmarks, history items at next to current tab
+// if |insertAfterCurrent| is true.  Otherwise, append new tab to the end
+// for non-related links. Note that if this is set to true, it will trump
+// the value of browser.tabs.insertRelatedAfterCurrent.
+pref("browser.tabs.insertAfterCurrent", false);
+pref("browser.tabs.warnOnClose", true);
+pref("browser.tabs.warnOnCloseOtherTabs", true);
+pref("browser.tabs.warnOnOpen", true);
+pref("browser.tabs.maxOpenBeforeWarn", 15);
+pref("browser.tabs.loadInBackground", true);
+pref("browser.tabs.opentabfor.middleclick", true);
+pref("browser.tabs.loadDivertedInBackground", false);
+pref("browser.tabs.loadBookmarksInBackground", false);
+pref("browser.tabs.loadBookmarksInTabs", false);
+pref("browser.tabs.tabClipWidth", 140);
+pref("browser.tabs.tabMinWidth", 76);
+// Initial titlebar state is managed by -moz-gtk-csd-hide-titlebar-by-default
+// on Linux.
+#ifndef UNIX_BUT_NOT_MAC
+  pref("browser.tabs.drawInTitlebar", true);
+#endif
+
+//Control the visibility of Tab Manager Menu.
+pref("browser.tabs.tabmanager.enabled", false);
+
+// Offer additional drag space to the user. The drag space
+// will only be shown if browser.tabs.drawInTitlebar is true.
+pref("browser.tabs.extraDragSpace", false);
+
+// When tabs opened by links in other tabs via a combination of
+// browser.link.open_newwindow being set to 3 and target="_blank" etc are
+// closed:
+// true   return to the tab that opened this tab (its owner)
+// false  return to the adjacent tab (old default)
+pref("browser.tabs.selectOwnerOnClose", true);
+
+// This should match Chromium's audio indicator delay.
+pref("browser.tabs.delayHidingAudioPlayingIconMS", 3000);
+
+// Pref to control whether we use a separate privileged content process
+// for about: pages. This pref name did not age well: we will have multiple
+// types of privileged content processes, each with different privileges.
+// types of privleged content processes, each with different privleges.
+pref("browser.tabs.remote.separatePrivilegedContentProcess", true);
+
+#if defined(NIGHTLY_BUILD) && !defined(MOZ_ASAN)
+  // This pref will cause assertions when a remoteType triggers a process switch
+  // to a new remoteType it should not be able to trigger.
+  pref("browser.tabs.remote.enforceRemoteTypeRestrictions", true);
+#endif
+
+// Pref to control whether we use a separate privileged content process
+// for certain mozilla webpages (which are listed in the pref
+// browser.tabs.remote.separatedMozillaDomains).
+pref("browser.tabs.remote.separatePrivilegedMozillaWebContentProcess", true);
+
+#ifdef NIGHTLY_BUILD
+pref("browser.tabs.tooltipsShowPidAndActiveness", true);
+#else
+pref("browser.tabs.tooltipsShowPidAndActiveness", false);
+#endif
+
+// allow_eval_* is enabled on Firefox Desktop only at this
+// point in time
+pref("security.allow_eval_with_system_principal", false);
+pref("security.allow_eval_in_parent_process", false);
+
+#if defined(NIGHTLY_BUILD)
+  pref("security.allow_parent_unrestricted_js_loads", false);
+#endif
+
+// Unload tabs when available memory is running low
+pref("browser.tabs.unloadOnLowMemory", false);
+
+pref("browser.ctrlTab.recentlyUsedOrder", true);
+
+// By default, do not export HTML at shutdown.
+// If true, at shutdown the bookmarks in your menu and toolbar will
+// be exported as HTML to the bookmarks.html file.
+pref("browser.bookmarks.autoExportHTML",          false);
+
+// The maximum number of daily bookmark backups to
+// keep in {PROFILEDIR}/bookmarkbackups. Special values:
+// -1: unlimited
+//  0: no backups created (and deletes all existing backups)
+pref("browser.bookmarks.max_backups",             15);
+
+// Whether menu should close after Ctrl-click, middle-click, etc.
+pref("browser.bookmarks.openInTabClosesMenu", true);
+
+// Where new bookmarks go by default.
+// Use PlacesUIUtils.defaultParentGuid to read this; do NOT read the pref
+// directly.
+// The pref is ignored if the browser.toolbars.bookmarks.2h2020 pref is false,
+// in which case bookmarks always go in the "Other bookmarks" folder.
+// The value is one of:
+// - a bookmarks guid
+// - "toolbar", "menu" or "unfiled" for those folders.
+// If we use the pref but the value isn't any of these, we'll fall back to
+// the bookmarks toolbar as a default.
+pref("browser.bookmarks.defaultLocation", "toolbar");
+
+// Scripts & Windows prefs
+pref("dom.disable_open_during_load",              true);
+pref("javascript.options.showInConsole",          true);
+
+// allow JS to move and resize existing windows
+pref("dom.disable_window_move_resize",            false);
+// prevent JS from monkeying with window focus, etc
+pref("dom.disable_window_flip",                   true);
+
+// popups.policy 1=allow,2=reject
+pref("privacy.popups.policy",               1);
+pref("privacy.popups.usecustom",            true);
+pref("privacy.popups.showBrowserMessage",   true);
+
+pref("privacy.item.cookies",                false);
+
+pref("privacy.clearOnShutdown.history",     true);
+pref("privacy.clearOnShutdown.formdata",    true);
+pref("privacy.clearOnShutdown.downloads",   true);
+pref("privacy.clearOnShutdown.cookies",     true);
+pref("privacy.clearOnShutdown.cache",       true);
+pref("privacy.clearOnShutdown.sessions",    true);
+pref("privacy.clearOnShutdown.offlineApps", false);
+pref("privacy.clearOnShutdown.siteSettings", false);
+pref("privacy.clearOnShutdown.openWindows", false);
+
+pref("privacy.cpd.history",                 true);
+pref("privacy.cpd.formdata",                true);
+pref("privacy.cpd.passwords",               false);
+pref("privacy.cpd.downloads",               true);
+pref("privacy.cpd.cookies",                 true);
+pref("privacy.cpd.cache",                   true);
+pref("privacy.cpd.sessions",                true);
+pref("privacy.cpd.offlineApps",             false);
+pref("privacy.cpd.siteSettings",            false);
+pref("privacy.cpd.openWindows",             false);
+
+pref("privacy.history.custom",              false);
+
+// What default should we use for the time span in the sanitizer:
+// 0 - Clear everything
+// 1 - Last Hour
+// 2 - Last 2 Hours
+// 3 - Last 4 Hours
+// 4 - Today
+// 5 - Last 5 minutes
+// 6 - Last 24 hours
+pref("privacy.sanitize.timeSpan", 1);
+
+pref("privacy.sanitize.migrateFx3Prefs",    false);
+
+pref("privacy.panicButton.enabled",         true);
+
+// Time until temporary permissions expire, in ms
+pref("privacy.temporary_permission_expire_time_ms",  3600000);
+
+pref("network.proxy.share_proxy_settings",  false); // use the same proxy settings for all protocols
+
+// simple gestures support
+pref("browser.gesture.swipe.left", "Browser:BackOrBackDuplicate");
+pref("browser.gesture.swipe.right", "Browser:ForwardOrForwardDuplicate");
+pref("browser.gesture.swipe.up", "cmd_scrollTop");
+pref("browser.gesture.swipe.down", "cmd_scrollBottom");
+pref("browser.gesture.pinch.latched", false);
+pref("browser.gesture.pinch.threshold", 25);
+#if defined(XP_WIN) || defined(MOZ_WIDGET_GTK)
+  // Enabled for touch input display zoom.
+  pref("browser.gesture.pinch.out", "cmd_fullZoomEnlarge");
+  pref("browser.gesture.pinch.in", "cmd_fullZoomReduce");
+  pref("browser.gesture.pinch.out.shift", "cmd_fullZoomReset");
+  pref("browser.gesture.pinch.in.shift", "cmd_fullZoomReset");
+#else
+  // Disabled by default due to issues with track pad input.
+  pref("browser.gesture.pinch.out", "");
+  pref("browser.gesture.pinch.in", "");
+  pref("browser.gesture.pinch.out.shift", "");
+  pref("browser.gesture.pinch.in.shift", "");
+#endif
+pref("browser.gesture.twist.latched", false);
+pref("browser.gesture.twist.threshold", 0);
+pref("browser.gesture.twist.right", "cmd_gestureRotateRight");
+pref("browser.gesture.twist.left", "cmd_gestureRotateLeft");
+pref("browser.gesture.twist.end", "cmd_gestureRotateEnd");
+pref("browser.gesture.tap", "cmd_fullZoomReset");
+
+pref("browser.history_swipe_animation.disabled", false);
+
+// 0: Nothing happens
+// 1: Scrolling contents
+// 2: Go back or go forward, in your history
+// 3: Zoom in or out (reflowing zoom).
+// 4: Treat vertical wheel as horizontal scroll
+// 5: Zoom in or out (pinch zoom).
+#ifdef XP_MACOSX
+  // On macOS, if the wheel has one axis only, shift+wheel comes through as a
+  // horizontal scroll event. Thus, we can't assign anything other than normal
+  // scrolling to shift+wheel.
+  pref("mousewheel.with_shift.action", 1);
+  pref("mousewheel.with_alt.action", 2);
+  // On MacOS X, control+wheel is typically handled by system and we don't
+  // receive the event.  So, command key which is the main modifier key for
+  // acceleration is the best modifier for zoom-in/out.  However, we should keep
+  // the control key setting for backward compatibility.
+  pref("mousewheel.with_meta.action", 3); // command key on Mac
+  // Disable control-/meta-modified horizontal wheel events, since those are
+  // used on Mac as part of modified swipe gestures (e.g. Left swipe+Cmd is
+  // "go back" in a new tab).
+  pref("mousewheel.with_control.action.override_x", 0);
+  pref("mousewheel.with_meta.action.override_x", 0);
+#else
+  // On the other platforms (non-macOS), user may use legacy mouse which
+  // supports only vertical wheel but want to scroll horizontally.  For such
+  // users, we should provide horizontal scroll with shift+wheel (same as
+  // Chrome). However, shift+wheel was used for navigating history.  For users
+  // who want to keep using this feature, let's enable it with alt+wheel.  This
+  // is better for consistency with macOS users.
+  pref("mousewheel.with_shift.action", 4);
+  pref("mousewheel.with_alt.action", 2);
+  pref("mousewheel.with_meta.action", 1); // win key on Win, Super/Hyper on Linux
+#endif
+pref("mousewheel.with_control.action",3);
+pref("mousewheel.with_win.action", 1);
+
+pref("browser.xul.error_pages.expert_bad_cert", false);
+pref("browser.xul.error_pages.show_safe_browsing_details_on_load", false);
+
+// Enable captive portal detection.
+pref("network.captive-portal-service.enabled", true);
+
+// If true, network link events will change the value of navigator.onLine
+pref("network.manage-offline-status", true);
+
+// We want to make sure mail URLs are handled externally...
+pref("network.protocol-handler.external.mailto", true); // for mail
+pref("network.protocol-handler.external.news", true);   // for news
+pref("network.protocol-handler.external.snews", true);  // for secure news
+pref("network.protocol-handler.external.nntp", true);   // also news
+#ifdef XP_WIN
+  pref("network.protocol-handler.external.ms-windows-store", true);
+#endif
+
+// ...without warning dialogs
+pref("network.protocol-handler.warn-external.mailto", false);
+pref("network.protocol-handler.warn-external.news", false);
+pref("network.protocol-handler.warn-external.snews", false);
+pref("network.protocol-handler.warn-external.nntp", false);
+#ifdef XP_WIN
+  pref("network.protocol-handler.warn-external.ms-windows-store", false);
+#endif
+
+// By default, all protocol handlers are exposed.  This means that
+// the browser will respond to openURL commands for all URL types.
+// It will also try to open link clicks inside the browser before
+// failing over to the system handlers.
+pref("network.protocol-handler.expose-all", true);
+pref("network.protocol-handler.expose.mailto", false);
+pref("network.protocol-handler.expose.news", false);
+pref("network.protocol-handler.expose.snews", false);
+pref("network.protocol-handler.expose.nntp", false);
+
+pref("accessibility.typeaheadfind", false);
+pref("accessibility.typeaheadfind.timeout", 5000);
+pref("accessibility.typeaheadfind.linksonly", false);
+pref("accessibility.typeaheadfind.flashBar", 1);
+
+// Accessibility indicator preferences such as support URL, enabled flag.
+pref("accessibility.support.url", "https://support.mozilla.org/%LOCALE%/kb/accessibility-services");
+pref("accessibility.indicator.enabled", false);
+
+pref("plugins.testmode", false);
+
+// Should plugins that are hidden show the infobar UI?
+pref("plugins.show_infobar", false);
+
+#if defined(_ARM64_) && defined(XP_WIN)
+  pref("plugin.default.state", 0);
+#else
+  pref("plugin.default.state", 1);
+#endif
+
+// Enables the download and use of the flash blocklists.
+pref("plugins.flashBlock.enabled", true);
+
+// Prefer HTML5 video over Flash content, and don't
+// load plugin instances with no src declared.
+// These prefs are documented in details on all.js.
+// With the "follow-ctp" setting, this will only
+// apply to users that have plugin.state.flash = 1.
+pref("plugins.favorfallback.mode", "follow-ctp");
+pref("plugins.favorfallback.rules", "nosrc,video");
+
+#ifdef XP_WIN
+  pref("browser.preferences.instantApply", false);
+#else
+  pref("browser.preferences.instantApply", true);
+#endif
+
+// Toggling Search bar on and off in about:preferences
+pref("browser.preferences.search", true);
+#if defined(NIGHTLY_BUILD)
+pref("browser.preferences.experimental", true);
+#else
+pref("browser.preferences.experimental", false);
+#endif
+pref("browser.preferences.experimental.hidden", false);
+pref("browser.preferences.defaultPerformanceSettings.enabled", true);
+
+pref("browser.preferences.exposeHTTPSOnly", true);
+
+pref("browser.proton.enabled", false);
+
+// Backspace and Shift+Backspace behavior
+// 0 goes Back/Forward
+// 1 act like PgUp/PgDown
+// 2 and other values, nothing
+#ifdef UNIX_BUT_NOT_MAC
+  pref("browser.backspace_action", 2);
+#else
+  pref("browser.backspace_action", 0);
+#endif
+
+pref("intl.regional_prefs.use_os_locales", false);
+
+// this will automatically enable inline spellchecking (if it is available) for
+// editable elements in HTML
+// 0 = spellcheck nothing
+// 1 = check multi-line controls [default]
+// 2 = check multi/single line controls
+pref("layout.spellcheckDefault", 1);
+
+pref("browser.send_pings", false);
+
+// At startup, if the handler service notices that the version number in the
+// region.properties file is newer than the version number in the handler
+// service datastore, it will add any new handlers it finds in the prefs (as
+// seeded by this file) to its datastore.
+pref("gecko.handlerService.defaultHandlersVersion", "chrome://browser-region/locale/region.properties");
+
+// The default set of web-based protocol handlers shown in the application
+// selection dialog for webcal: ; I've arbitrarily picked 4 default handlers
+// per protocol, but if some locale wants more than that (or defaults for some
+// protocol not currently listed here), we should go ahead and add those.
+
+// webcal
+pref("gecko.handlerService.schemes.webcal.0.name", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.webcal.0.uriTemplate", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.webcal.1.name", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.webcal.1.uriTemplate", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.webcal.2.name", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.webcal.2.uriTemplate", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.webcal.3.name", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.webcal.3.uriTemplate", "chrome://browser-region/locale/region.properties");
+
+// mailto
+pref("gecko.handlerService.schemes.mailto.0.name", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.mailto.0.uriTemplate", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.mailto.1.name", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.mailto.1.uriTemplate", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.mailto.2.name", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.mailto.2.uriTemplate", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.mailto.3.name", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.mailto.3.uriTemplate", "chrome://browser-region/locale/region.properties");
+
+// irc
+pref("gecko.handlerService.schemes.irc.0.name", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.irc.0.uriTemplate", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.irc.1.name", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.irc.1.uriTemplate", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.irc.2.name", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.irc.2.uriTemplate", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.irc.3.name", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.irc.3.uriTemplate", "chrome://browser-region/locale/region.properties");
+
+// ircs
+pref("gecko.handlerService.schemes.ircs.0.name", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.ircs.0.uriTemplate", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.ircs.1.name", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.ircs.1.uriTemplate", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.ircs.2.name", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.ircs.2.uriTemplate", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.ircs.3.name", "chrome://browser-region/locale/region.properties");
+pref("gecko.handlerService.schemes.ircs.3.uriTemplate", "chrome://browser-region/locale/region.properties");
+
+pref("browser.geolocation.warning.infoURL", "https://www.mozilla.org/%LOCALE%/firefox/geolocation/");
+pref("browser.xr.warning.infoURL", "https://www.mozilla.org/%LOCALE%/firefox/xr/");
+
+pref("browser.sessionstore.resume_from_crash", true);
+pref("browser.sessionstore.resume_session_once", false);
+pref("browser.sessionstore.resuming_after_os_restart", false);
+
+// Minimal interval between two save operations in milliseconds (while the user is active).
+pref("browser.sessionstore.interval", 15000); // 15 seconds
+
+// Minimal interval between two save operations in milliseconds (while the user is idle).
+pref("browser.sessionstore.interval.idle", 3600000); // 1h
+
+// Time (ms) before we assume that the user is idle and that we don't need to
+// collect/save the session quite as often.
+pref("browser.sessionstore.idleDelay", 180000); // 3 minutes
+
+// on which sites to save text data, POSTDATA and cookies
+// 0 = everywhere, 1 = unencrypted sites, 2 = nowhere
+pref("browser.sessionstore.privacy_level", 0);
+// how many tabs can be reopened (per window)
+pref("browser.sessionstore.max_tabs_undo", 25);
+// how many windows can be reopened (per session) - on non-OS X platforms this
+// pref may be ignored when dealing with pop-up windows to ensure proper startup
+pref("browser.sessionstore.max_windows_undo", 3);
+// number of crashes that can occur before the about:sessionrestore page is displayed
+// (this pref has no effect if more than 6 hours have passed since the last crash)
+pref("browser.sessionstore.max_resumed_crashes", 1);
+// number of back button session history entries to restore (-1 = all of them)
+pref("browser.sessionstore.max_serialize_back", 10);
+// number of forward button session history entries to restore (-1 = all of them)
+pref("browser.sessionstore.max_serialize_forward", -1);
+// restore_on_demand overrides MAX_CONCURRENT_TAB_RESTORES (sessionstore constant)
+// and restore_hidden_tabs. When true, tabs will not be restored until they are
+// focused (also applies to tabs that aren't visible). When false, the values
+// for MAX_CONCURRENT_TAB_RESTORES and restore_hidden_tabs are respected.
+// Selected tabs are always restored regardless of this pref.
+pref("browser.sessionstore.restore_on_demand", true);
+// Whether to automatically restore hidden tabs (i.e., tabs in other tab groups) or not
+pref("browser.sessionstore.restore_hidden_tabs", false);
+// If restore_on_demand is set, pinned tabs are restored on startup by default.
+// When set to true, this pref overrides that behavior, and pinned tabs will only
+// be restored when they are focused.
+pref("browser.sessionstore.restore_pinned_tabs_on_demand", false);
+// The version at which we performed the latest upgrade backup
+pref("browser.sessionstore.upgradeBackup.latestBuildID", "");
+// How many upgrade backups should be kept
+pref("browser.sessionstore.upgradeBackup.maxUpgradeBackups", 3);
+// End-users should not run sessionstore in debug mode
+pref("browser.sessionstore.debug", false);
+// Causes SessionStore to ignore non-final update messages from
+// browser tabs that were not caused by a flush from the parent.
+// This is a testing flag and should not be used by end-users.
+pref("browser.sessionstore.debug.no_auto_updates", false);
+// Forget closed windows/tabs after two weeks
+pref("browser.sessionstore.cleanup.forget_closed_after", 1209600000);
+// Amount of failed SessionFile writes until we restart the worker.
+pref("browser.sessionstore.max_write_failures", 5);
+
+// Whether to warn the user when quitting, even though their tabs will be restored.
+pref("browser.sessionstore.warnOnQuit", false);
+
+// allow META refresh by default
+pref("accessibility.blockautorefresh", false);
+
+// Whether history is enabled or not.
+pref("places.history.enabled", true);
+
+// Whether or not diacritics must match in history text searches.
+pref("places.search.matchDiacritics", false);
+
+// the (maximum) number of the recent visits to sample
+// when calculating frecency
+pref("places.frecency.numVisits", 10);
+
+// buckets (in days) for frecency calculation
+pref("places.frecency.firstBucketCutoff", 4);
+pref("places.frecency.secondBucketCutoff", 14);
+pref("places.frecency.thirdBucketCutoff", 31);
+pref("places.frecency.fourthBucketCutoff", 90);
+
+// weights for buckets for frecency calculations
+pref("places.frecency.firstBucketWeight", 100);
+pref("places.frecency.secondBucketWeight", 70);
+pref("places.frecency.thirdBucketWeight", 50);
+pref("places.frecency.fourthBucketWeight", 30);
+pref("places.frecency.defaultBucketWeight", 10);
+
+// bonus (in percent) for visit transition types for frecency calculations
+pref("places.frecency.embedVisitBonus", 0);
+pref("places.frecency.framedLinkVisitBonus", 0);
+pref("places.frecency.linkVisitBonus", 100);
+pref("places.frecency.typedVisitBonus", 2000);
+// The bookmarks bonus is always added on top of any other bonus, including
+// the redirect source and the typed ones.
+pref("places.frecency.bookmarkVisitBonus", 75);
+// The redirect source bonus overwrites any transition bonus.
+// 0 would hide these pages, instead we want them low ranked.  Thus we use
+// linkVisitBonus - bookmarkVisitBonus, so that a bookmarked source is in par
+// with a common link.
+pref("places.frecency.redirectSourceVisitBonus", 25);
+pref("places.frecency.downloadVisitBonus", 0);
+// The perm/temp redirects here relate to redirect targets, not sources.
+pref("places.frecency.permRedirectVisitBonus", 50);
+pref("places.frecency.tempRedirectVisitBonus", 40);
+pref("places.frecency.reloadVisitBonus", 0);
+pref("places.frecency.defaultVisitBonus", 0);
+
+// bonus (in percent) for place types for frecency calculations
+pref("places.frecency.unvisitedBookmarkBonus", 140);
+pref("places.frecency.unvisitedTypedBonus", 200);
+
+// Controls behavior of the "Add Exception" dialog launched from SSL error pages
+// 0 - don't pre-populate anything
+// 1 - pre-populate site URL, but don't fetch certificate
+// 2 - pre-populate site URL and pre-fetch certificate
+pref("browser.ssl_override_behavior", 2);
+
+// if true, use full page zoom instead of text zoom
+pref("browser.zoom.full", true);
+
+// Whether or not to save and restore zoom levels on a per-site basis.
+pref("browser.zoom.siteSpecific", true);
+
+// Whether or not to update background tabs to the current zoom level.
+pref("browser.zoom.updateBackgroundTabs", true);
+
+// The breakpad report server to link to in about:crashes
+pref("breakpad.reportURL", "https://crash-stats.mozilla.org/report/index/");
+
+// URL for "Learn More" for DataCollection
+pref("toolkit.datacollection.infoURL",
+     "https://www.mozilla.org/legal/privacy/firefox.html");
+
+// URL for "Learn More" for Crash Reporter
+pref("toolkit.crashreporter.infoURL",
+     "https://www.mozilla.org/legal/privacy/firefox.html#crash-reporter");
+
+// base URL for web-based support pages
+pref("app.support.baseURL", "https://support.mozilla.org/1/firefox/%VERSION%/%OS%/%LOCALE%/");
+
+// base url for web-based feedback pages
+#ifdef MOZ_DEV_EDITION
+  pref("app.feedback.baseURL", "https://input.mozilla.org/%LOCALE%/feedback/firefoxdev/%VERSION%/");
+#else
+  pref("app.feedback.baseURL", "https://input.mozilla.org/%LOCALE%/feedback/%APP%/%VERSION%/");
+#endif
+
+// Name of alternate about: page for certificate errors (when undefined, defaults to about:neterror)
+pref("security.alternate_certificate_error_page", "certerror");
+
+pref("security.certerrors.recordEventTelemetry", true);
+pref("security.certerrors.permanentOverride", true);
+pref("security.certerrors.mitm.priming.enabled", true);
+pref("security.certerrors.mitm.priming.endpoint", "https://mitmdetection.services.mozilla.com/");
+pref("security.certerrors.mitm.auto_enable_enterprise_roots", true);
+
+// Whether the bookmark panel should be shown when bookmarking a page.
+pref("browser.bookmarks.editDialog.showForNewBookmarks", true);
+
+// Don't try to alter this pref, it'll be reset the next time you use the
+// bookmarking dialog
+pref("browser.bookmarks.editDialog.firstEditField", "namePicker");
+
+// The number of recently selected folders in the edit bookmarks dialog.
+pref("browser.bookmarks.editDialog.maxRecentFolders", 7);
+
+pref("dom.ipc.plugins.flash.disable-protected-mode", false);
+
+// Feature-disable the protected-mode auto-flip
+pref("browser.flash-protected-mode-flip.enable", false);
+
+// Whether we've already flipped protected mode automatically
+pref("browser.flash-protected-mode-flip.done", false);
+
+pref("dom.ipc.shims.enabledWarnings", false);
+
+#if defined(XP_WIN) && defined(MOZ_SANDBOX)
+  // Controls whether and how the Windows NPAPI plugin process is sandboxed.
+  // To get a different setting for a particular plugin replace "default", with
+  // the plugin's nice file name, see: nsPluginTag::GetNiceFileName.
+  // On windows these levels are:
+  // 0 - no sandbox
+  // 1 - sandbox with USER_NON_ADMIN access token level
+  // 2 - a more strict sandbox, which might cause functionality issues. This now
+  //     includes running at low integrity.
+  // 3 - the strongest settings we seem to be able to use without breaking
+  //     everything, but will probably cause some functionality restrictions
+  pref("dom.ipc.plugins.sandbox-level.default", 0);
+  #if defined(_AMD64_)
+    // The base sandbox level in nsPluginTag::InitSandboxLevel must be
+    // updated to keep in sync with this value.
+    pref("dom.ipc.plugins.sandbox-level.flash", 3);
+  #else
+    pref("dom.ipc.plugins.sandbox-level.flash", 0);
+  #endif
+
+  // This controls the strength of the Windows content process sandbox for
+  // testing purposes. This will require a restart.
+  // On windows these levels are:
+  // See - security/sandbox/win/src/sandboxbroker/sandboxBroker.cpp
+  // SetSecurityLevelForContentProcess() for what the different settings mean.
+  pref("security.sandbox.content.level", 6);
+
+  // This controls the strength of the Windows GPU process sandbox.  Changes
+  // will require restart.
+  // For information on what the level number means, see
+  // SetSecurityLevelForGPUProcess() in
+  // security/sandbox/win/src/sandboxbroker/sandboxBroker.cpp
+  pref("security.sandbox.gpu.level", 0);
+#endif
+
+#if defined(XP_MACOSX) && defined(MOZ_SANDBOX)
+  // This pref is discussed in bug 1083344, the naming is inspired from its
+  // Windows counterpart, but on Mac it's an integer which means:
+  // 0 -> "no sandbox" (nightly only)
+  // 1 -> "preliminary content sandboxing enabled: write access to
+  //       home directory is prevented"
+  // 2 -> "preliminary content sandboxing enabled with profile protection:
+  //       write access to home directory is prevented, read and write access
+  //       to ~/Library and profile directories are prevented (excluding
+  //       $PROFILE/{extensions,chrome})"
+  // 3 -> "no global read/write access, read access permitted to
+  //       $PROFILE/{extensions,chrome}"
+  // This setting is read when the content process is started. On Mac the
+  // content process is killed when all windows are closed, so a change will
+  // take effect when the 1st window is opened.
+  pref("security.sandbox.content.level", 3);
+
+  // Prefs for controlling whether and how the Mac NPAPI Flash plugin process is
+  // sandboxed. On Mac these levels are:
+  // 0 - "no sandbox"
+  // 1 - "global read access, limited write access for Flash functionality"
+  // 2 - "read access triggered by file dialog activity, limited read/write"
+  //     "access for Flash functionality"
+  // 3 - "limited read/write access for Flash functionality"
+  pref("dom.ipc.plugins.sandbox-level.flash", 1);
+  // Controls the level used on older OS X versions. Is overriden when the
+  // "dom.ipc.plugins.sandbox-level.flash" is set to 0.
+  pref("dom.ipc.plugins.sandbox-level.flash.legacy", 1);
+  // The max OS minor version where we use the above legacy sandbox level.
+  pref("dom.ipc.plugins.sandbox-level.flash.max-legacy-os-minor", 10);
+  // Controls the sandbox level used by plugins other than Flash. On Mac,
+  // no other plugins are supported and this pref is only used for test
+  // plugins used in automated tests.
+  pref("dom.ipc.plugins.sandbox-level.default", 1);
+#endif
+
+#if defined(XP_LINUX) && defined(MOZ_SANDBOX)
+  // This pref is introduced as part of bug 742434, the naming is inspired from
+  // its Windows/Mac counterpart, but on Linux it's an integer which means:
+  // 0 -> "no sandbox"
+  // 1 -> "content sandbox using seccomp-bpf when available" + ipc restrictions
+  // 2 -> "seccomp-bpf + write file broker"
+  // 3 -> "seccomp-bpf + read/write file brokering"
+  // 4 -> all of the above + network/socket restrictions + chroot
+  //
+  // The purpose of this setting is to allow Linux users or distros to disable
+  // the sandbox while we fix their problems, or to allow running Firefox with
+  // exotic configurations we can't reasonably support out of the box.
+  //
+  pref("security.sandbox.content.level", 4);
+  // Introduced as part of bug 1608558.  Linux is currently the only platform
+  // that uses a sandbox level for the socket process.  There are currently
+  // only 2 levels:
+  // 0 -> "no sandbox"
+  // 1 -> "sandboxed, allows socket operations and reading necessary certs"
+  pref("security.sandbox.socket.process.level", 1);
+  pref("security.sandbox.content.write_path_whitelist", "");
+  pref("security.sandbox.content.read_path_whitelist", "");
+  pref("security.sandbox.content.syscall_whitelist", "");
+#endif
+
+#if defined(XP_OPENBSD) && defined(MOZ_SANDBOX)
+  pref("security.sandbox.content.level", 1);
+#endif
+
+#if defined(MOZ_SANDBOX)
+  // ID (a UUID when set by gecko) that is used to form the name of a
+  // sandbox-writable temporary directory to be used by content processes
+  // when a temporary writable file is required in a level 1 sandbox.
+  pref("security.sandbox.content.tempDirSuffix", "");
+  pref("security.sandbox.plugin.tempDirSuffix", "");
+
+  // This pref determines if messages relevant to sandbox violations are
+  // logged.
+  #if defined(XP_WIN) || defined(XP_MACOSX)
+    pref("security.sandbox.logging.enabled", false);
+  #endif
+#endif
+
+// This pref governs whether we attempt to work around problems caused by
+// plugins using OS calls to manipulate the cursor while running out-of-
+// process.  These workarounds all involve intercepting (hooking) certain
+// OS calls in the plugin process, then arranging to make certain OS calls
+// in the browser process.  Eventually plugins will be required to use the
+// NPAPI to manipulate the cursor, and these workarounds will be removed.
+// See bug 621117.
+#ifdef XP_MACOSX
+  pref("dom.ipc.plugins.nativeCursorSupport", true);
+#endif
+
+#ifdef XP_WIN
+  pref("browser.taskbar.previews.enable", false);
+  pref("browser.taskbar.previews.max", 20);
+  pref("browser.taskbar.previews.cachetime", 5);
+  pref("browser.taskbar.lists.enabled", true);
+  pref("browser.taskbar.lists.frequent.enabled", true);
+  pref("browser.taskbar.lists.recent.enabled", false);
+  pref("browser.taskbar.lists.maxListItemCount", 7);
+  pref("browser.taskbar.lists.tasks.enabled", true);
+  pref("browser.taskbar.lists.refreshInSeconds", 120);
+#endif
+
+// Preferences to be synced by default
+pref("services.sync.prefs.sync.accessibility.blockautorefresh", true);
+pref("services.sync.prefs.sync.accessibility.browsewithcaret", true);
+pref("services.sync.prefs.sync.accessibility.typeaheadfind", true);
+pref("services.sync.prefs.sync.accessibility.typeaheadfind.linksonly", true);
+pref("services.sync.prefs.sync.addons.ignoreUserEnabledChanges", true);
+pref("services.sync.prefs.sync.app.shield.optoutstudies.enabled", true);
+// The addons prefs related to repository verification are intentionally
+// not synced for security reasons. If a system is compromised, a user
+// could weaken the pref locally, install an add-on from an untrusted
+// source, and this would propagate automatically to other,
+// uncompromised Sync-connected devices.
+pref("services.sync.prefs.sync.browser.contentblocking.category", true);
+pref("services.sync.prefs.sync.browser.contentblocking.features.strict", true);
+pref("services.sync.prefs.sync.browser.crashReports.unsubmittedCheck.autoSubmit2", true);
+pref("services.sync.prefs.sync.browser.ctrlTab.recentlyUsedOrder", true);
+pref("services.sync.prefs.sync.browser.discovery.enabled", true);
+pref("services.sync.prefs.sync.browser.download.useDownloadDir", true);
+pref("services.sync.prefs.sync.browser.formfill.enable", true);
+pref("services.sync.prefs.sync.browser.link.open_newwindow", true);
+pref("services.sync.prefs.sync.browser.newtabpage.activity-stream.asrouter.userprefs.cfr.addons", true);
+pref("services.sync.prefs.sync.browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features", true);
+pref("services.sync.prefs.sync.browser.newtabpage.activity-stream.showSearch", true);
+pref("services.sync.prefs.sync.browser.newtabpage.activity-stream.showSponsored", true);
+pref("services.sync.prefs.sync.browser.newtabpage.activity-stream.showSponsoredTopSites", true);
+pref("services.sync.prefs.sync.browser.newtabpage.activity-stream.feeds.topsites", true);
+pref("services.sync.prefs.sync.browser.newtabpage.activity-stream.topSitesRows", true);
+pref("services.sync.prefs.sync.browser.newtabpage.activity-stream.feeds.snippets", true);
+pref("services.sync.prefs.sync.browser.newtabpage.activity-stream.feeds.section.topstories", true);
+pref("services.sync.prefs.sync.browser.newtabpage.activity-stream.section.topstories.rows", true);
+pref("services.sync.prefs.sync.browser.newtabpage.activity-stream.feeds.section.highlights", true);
+pref("services.sync.prefs.sync.browser.newtabpage.activity-stream.section.highlights.includeVisited", true);
+pref("services.sync.prefs.sync.browser.newtabpage.activity-stream.section.highlights.includeBookmarks", true);
+pref("services.sync.prefs.sync.browser.newtabpage.activity-stream.section.highlights.includeDownloads", true);
+pref("services.sync.prefs.sync.browser.newtabpage.activity-stream.section.highlights.includePocket", true);
+pref("services.sync.prefs.sync.browser.newtabpage.activity-stream.section.highlights.rows", true);
+pref("services.sync.prefs.sync.browser.newtabpage.enabled", true);
+pref("services.sync.prefs.sync.browser.newtabpage.pinned", true);
+pref("services.sync.prefs.sync.browser.offline-apps.notify", true);
+pref("services.sync.prefs.sync.browser.safebrowsing.downloads.enabled", true);
+pref("services.sync.prefs.sync.browser.safebrowsing.downloads.remote.block_potentially_unwanted", true);
+pref("services.sync.prefs.sync.browser.safebrowsing.malware.enabled", true);
+pref("services.sync.prefs.sync.browser.safebrowsing.phishing.enabled", true);
+pref("services.sync.prefs.sync.browser.search.update", true);
+pref("services.sync.prefs.sync.browser.search.widget.inNavBar", true);
+pref("services.sync.prefs.sync.browser.sessionstore.warnOnQuit", true);
+pref("services.sync.prefs.sync.browser.startup.homepage", true);
+pref("services.sync.prefs.sync.browser.startup.page", true);
+pref("services.sync.prefs.sync.browser.tabs.loadInBackground", true);
+pref("services.sync.prefs.sync.browser.tabs.warnOnClose", true);
+pref("services.sync.prefs.sync.browser.tabs.warnOnOpen", true);
+pref("services.sync.prefs.sync.browser.taskbar.previews.enable", true);
+pref("services.sync.prefs.sync.browser.urlbar.matchBuckets", true);
+pref("services.sync.prefs.sync.browser.urlbar.maxRichResults", true);
+pref("services.sync.prefs.sync.browser.urlbar.suggest.bookmark", true);
+pref("services.sync.prefs.sync.browser.urlbar.suggest.history", true);
+pref("services.sync.prefs.sync.browser.urlbar.suggest.openpage", true);
+pref("services.sync.prefs.sync.browser.urlbar.suggest.searches", true);
+pref("services.sync.prefs.sync.browser.urlbar.suggest.topsites", true);
+pref("services.sync.prefs.sync.browser.urlbar.suggest.engines", true);
+pref("services.sync.prefs.sync.dom.disable_open_during_load", true);
+pref("services.sync.prefs.sync.dom.disable_window_flip", true);
+pref("services.sync.prefs.sync.dom.disable_window_move_resize", true);
+pref("services.sync.prefs.sync.dom.event.contextmenu.enabled", true);
+pref("services.sync.prefs.sync.dom.security.https_only_mode", true);
+pref("services.sync.prefs.sync.dom.security.https_only_mode_ever_enabled", true);
+pref("services.sync.prefs.sync.dom.security.https_only_mode_ever_enabled_pbm", true);
+pref("services.sync.prefs.sync.dom.security.https_only_mode_pbm", true);
+pref("services.sync.prefs.sync.extensions.update.enabled", true);
+pref("services.sync.prefs.sync.extensions.activeThemeID", true);
+pref("services.sync.prefs.sync.general.autoScroll", true);
+pref("services.sync.prefs.sync.general.smoothScroll", true);
+pref("services.sync.prefs.sync.intl.accept_languages", true);
+pref("services.sync.prefs.sync.intl.regional_prefs.use_os_locales", true);
+pref("services.sync.prefs.sync.layout.spellcheckDefault", true);
+pref("services.sync.prefs.sync.media.autoplay.default", true);
+pref("services.sync.prefs.sync.media.eme.enabled", true);
+pref("services.sync.prefs.sync.media.videocontrols.picture-in-picture.video-toggle.enabled", true);
+pref("services.sync.prefs.sync.network.cookie.cookieBehavior", true);
+pref("services.sync.prefs.sync.network.cookie.lifetimePolicy", true);
+pref("services.sync.prefs.sync.network.cookie.thirdparty.sessionOnly", true);
+pref("services.sync.prefs.sync.permissions.default.image", true);
+pref("services.sync.prefs.sync.pref.downloads.disable_button.edit_actions", true);
+pref("services.sync.prefs.sync.pref.privacy.disable_button.cookie_exceptions", true);
+pref("services.sync.prefs.sync.privacy.clearOnShutdown.cache", true);
+pref("services.sync.prefs.sync.privacy.clearOnShutdown.cookies", true);
+pref("services.sync.prefs.sync.privacy.clearOnShutdown.downloads", true);
+pref("services.sync.prefs.sync.privacy.clearOnShutdown.formdata", true);
+pref("services.sync.prefs.sync.privacy.clearOnShutdown.history", true);
+pref("services.sync.prefs.sync.privacy.clearOnShutdown.offlineApps", true);
+pref("services.sync.prefs.sync.privacy.clearOnShutdown.sessions", true);
+pref("services.sync.prefs.sync.privacy.clearOnShutdown.siteSettings", true);
+pref("services.sync.prefs.sync.privacy.donottrackheader.enabled", true);
+pref("services.sync.prefs.sync.privacy.fuzzyfox.enabled", false);
+pref("services.sync.prefs.sync.privacy.fuzzyfox.clockgrainus", false);
+pref("services.sync.prefs.sync.privacy.sanitize.sanitizeOnShutdown", true);
+pref("services.sync.prefs.sync.privacy.trackingprotection.enabled", true);
+pref("services.sync.prefs.sync.privacy.trackingprotection.cryptomining.enabled", true);
+pref("services.sync.prefs.sync.privacy.trackingprotection.fingerprinting.enabled", true);
+pref("services.sync.prefs.sync.privacy.trackingprotection.pbmode.enabled", true);
+pref("services.sync.prefs.sync.privacy.resistFingerprinting", true);
+pref("services.sync.prefs.sync.privacy.reduceTimerPrecision", true);
+pref("services.sync.prefs.sync.privacy.resistFingerprinting.reduceTimerPrecision.microseconds", true);
+pref("services.sync.prefs.sync.privacy.resistFingerprinting.reduceTimerPrecision.jitter", true);
+pref("services.sync.prefs.sync.privacy.userContext.enabled", true);
+pref("services.sync.prefs.sync.privacy.userContext.newTabContainerOnLeftClick.enabled", true);
+pref("services.sync.prefs.sync.security.default_personal_cert", true);
+pref("services.sync.prefs.sync.services.sync.syncedTabs.showRemoteIcons", true);
+pref("services.sync.prefs.sync.signon.autofillForms", true);
+pref("services.sync.prefs.sync.signon.generation.enabled", true);
+pref("services.sync.prefs.sync.signon.management.page.breach-alerts.enabled", true);
+pref("services.sync.prefs.sync.signon.rememberSignons", true);
+pref("services.sync.prefs.sync.spellchecker.dictionary", true);
+pref("services.sync.prefs.sync.ui.osk.enabled", true);
+
+// A preference which, if false, means sync will only apply incoming preference
+// changes if there's already a local services.sync.prefs.sync.* control pref.
+// If true, all incoming preferences will be applied and the local "control
+// pref" updated accordingly.
+pref("services.sync.prefs.dangerously_allow_arbitrary", false);
+
+// A preference that controls whether we should show the icon for a remote tab.
+// This pref has no UI but exists because some people may be concerned that
+// fetching these icons to show remote tabs may leak information about that
+// user's tabs and bookmarks. Note this pref is also synced.
+pref("services.sync.syncedTabs.showRemoteIcons", true);
+
+// Whether the character encoding menu is under the main Firefox button. This
+// preference is a string so that localizers can alter it.
+pref("browser.menu.showCharacterEncoding", "chrome://browser/locale/browser.properties");
+
+// Whether prompts should be content modal (1) tab modal (2) or window modal(3) by default
+// This is a fallback value for when prompt callers do not specify a modalType.
+pref("prompts.defaultModalType", 3);
+
+pref("browser.topsites.useRemoteSetting", false);
+
+// The base URL for the Quick Suggest anonymizing proxy. To make a request to
+// the proxy, include a campaign ID in the path.
+pref("browser.partnerlink.attributionURL", "https://topsites.services.mozilla.com/cid/");
+pref("browser.partnerlink.campaign.topsites", "amzn_2020_a1");
+
+// Whether to show tab level system prompts opened via nsIPrompt(Service) as
+// SubDialogs in the TabDialogBox (true) or as TabModalPrompt in the
+// TabModalPromptBox (false).
+pref("prompts.tabChromePromptSubDialog", true);
+
+// Whether to show the dialogs opened at the content level, such as
+// alert() or prompt(), using a SubDialogManager in the TabDialogBox.
+#ifdef EARLY_BETA_OR_EARLIER
+  pref("prompts.contentPromptSubDialog", true);
+#else
+  pref("prompts.contentPromptSubDialog", false);
+#endif
+
+// Activates preloading of the new tab url.
+pref("browser.newtab.preload", true);
+
+// Preference to enable the entire new newtab experience at once.
+pref("browser.newtabpage.activity-stream.newNewtabExperience.enabled", false);
+
+// A preference which allows us to enable the fly out customization overlay
+// on the newtab page.
+pref("browser.newtabpage.activity-stream.customizationMenu.enabled", false);
+pref("browser.newtabpage.activity-stream.newNewtabExperience.colors", "#0090ED,#FF4F5F,#2AC3A2,#FF7139,#A172FF,#FFA437,#FF2A8A");
+
+// Activity Stream prefs that control to which page to redirect
+#ifndef RELEASE_OR_BETA
+  pref("browser.newtabpage.activity-stream.debug", false);
+#endif
+
+pref("browser.library.activity-stream.enabled", true);
+
+// The remote FxA root content URL for the Activity Stream firstrun page.
+pref("browser.newtabpage.activity-stream.fxaccounts.endpoint", "https://accounts.firefox.com/");
+
+// The pref that controls if the search shortcuts experiment is on
+pref("browser.newtabpage.activity-stream.improvesearch.topSiteSearchShortcuts", true);
+
+// ASRouter provider configuration
+pref("browser.newtabpage.activity-stream.asrouter.providers.cfr", "{\"id\":\"cfr\",\"enabled\":true,\"type\":\"remote-settings\",\"bucket\":\"cfr\",\"updateCycleInMs\":3600000}");
+pref("browser.newtabpage.activity-stream.asrouter.providers.whats-new-panel", "{\"id\":\"whats-new-panel\",\"enabled\":true,\"type\":\"remote-settings\",\"bucket\":\"whats-new-panel\",\"updateCycleInMs\":3600000}");
+pref("browser.newtabpage.activity-stream.asrouter.providers.message-groups", "{\"id\":\"message-groups\",\"enabled\":true,\"type\":\"remote-settings\",\"bucket\":\"message-groups\",\"updateCycleInMs\":3600000}");
+// This url, if changed, MUST continue to point to an https url. Pulling arbitrary content to inject into
+// this page over http opens us up to a man-in-the-middle attack that we'd rather not face. If you are a downstream
+// repackager of this code using an alternate snippet url, please keep your users safe
+pref("browser.newtabpage.activity-stream.asrouter.providers.snippets", "{\"id\":\"snippets\",\"enabled\":true,\"type\":\"remote\",\"url\":\"https://snippets.cdn.mozilla.net/%STARTPAGE_VERSION%/%NAME%/%VERSION%/%APPBUILDID%/%BUILD_TARGET%/%LOCALE%/%CHANNEL%/%OS_VERSION%/%DISTRIBUTION%/%DISTRIBUTION_VERSION%/\",\"updateCycleInMs\":14400000}");
+pref("browser.newtabpage.activity-stream.asrouter.providers.messaging-experiments", "{\"id\":\"messaging-experiments\",\"enabled\":true,\"type\":\"remote-experiments\",\"messageGroups\":[\"cfr\",\"whats-new-panel\",\"moments-page\",\"snippets\",\"cfr-fxa\",\"aboutwelcome\",\"infobar\"],\"updateCycleInMs\":3600000}");
+
+// ASRouter user prefs
+pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.addons", true);
+pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features", true);
+
+// The pref that controls if ASRouter uses the remote fluent files.
+// It's enabled by default, but could be disabled to force ASRouter to use the local files.
+pref("browser.newtabpage.activity-stream.asrouter.useRemoteL10n", true);
+
+// These prefs control if Discovery Stream is enabled.
+pref("browser.newtabpage.activity-stream.discoverystream.enabled", true);
+pref("browser.newtabpage.activity-stream.discoverystream.hardcoded-basic-layout", false);
+pref("browser.newtabpage.activity-stream.discoverystream.spocs-endpoint", "");
+pref("browser.newtabpage.activity-stream.discoverystream.spocs-endpoint-query", "");
+
+// List of regions that do not get stories, regardless of locale-list-config.
+pref("browser.newtabpage.activity-stream.discoverystream.region-stories-block", "FR");
+// List of locales that get stories, regardless of region-stories-config.
+#ifdef NIGHTLY_BUILD
+  pref("browser.newtabpage.activity-stream.discoverystream.locale-list-config", "en-US,en-CA,en-GB");
+#else
+  pref("browser.newtabpage.activity-stream.discoverystream.locale-list-config", "");
+#endif
+// List of regions that get stories by default.
+pref("browser.newtabpage.activity-stream.discoverystream.region-stories-config", "US,DE,CA,GB,IE,CH,AT,BE,IN");
+
+// List of regions that get spocs by default.
+pref("browser.newtabpage.activity-stream.discoverystream.region-spocs-config", "US,CA,DE,GB");
+// List of regions that don't get the 7 row layout.
+pref("browser.newtabpage.activity-stream.discoverystream.region-basic-config", "");
+
+// Allows Pocket story collections to be dismissed.
+pref("browser.newtabpage.activity-stream.discoverystream.isCollectionDismissible", true);
+pref("browser.newtabpage.activity-stream.discoverystream.personalization.version", 2);
+// Configurable keys used by personalization version 2.
+pref("browser.newtabpage.activity-stream.discoverystream.personalization.modelKeys", "nb_model_arts_and_entertainment, nb_model_autos_and_vehicles, nb_model_beauty_and_fitness, nb_model_blogging_resources_and_services, nb_model_books_and_literature, nb_model_business_and_industrial, nb_model_computers_and_electronics, nb_model_finance, nb_model_food_and_drink, nb_model_games, nb_model_health, nb_model_hobbies_and_leisure, nb_model_home_and_garden, nb_model_internet_and_telecom, nb_model_jobs_and_education, nb_model_law_and_government, nb_model_online_communities, nb_model_people_and_society, nb_model_pets_and_animals, nb_model_real_estate, nb_model_reference, nb_model_science, nb_model_shopping, nb_model_sports, nb_model_travel");
+// System pref to allow Pocket stories personalization to be turned on/off.
+pref("browser.newtabpage.activity-stream.discoverystream.recs.personalized", false);
+// System pref to allow Pocket sponsored content personalization to be turned on/off.
+pref("browser.newtabpage.activity-stream.discoverystream.spocs.personalized", true);
+
+// User pref to show stories on newtab (feeds.system.topstories has to be set to true as well)
+pref("browser.newtabpage.activity-stream.feeds.section.topstories", true);
+
+// The pref controls if search hand-off is enabled for Activity Stream.
+#ifdef NIGHTLY_BUILD
+  pref("browser.newtabpage.activity-stream.improvesearch.handoffToAwesomebar", true);
+#else
+  pref("browser.newtabpage.activity-stream.improvesearch.handoffToAwesomebar", false);
+#endif
+
+pref("browser.newtabpage.activity-stream.logowordmark.alwaysVisible", false);
+
+// Used to display triplet cards on newtab
+pref("trailhead.firstrun.newtab.triplets", "");
+// Separate about welcome
+pref("browser.aboutwelcome.enabled", true);
+// Used to set multistage welcome UX
+pref("browser.aboutwelcome.overrideContent", "");
+
+// The pref that controls if the What's New panel is enabled.
+pref("browser.messaging-system.whatsNewPanel.enabled", true);
+// Used for CFR messages with scores. See Bug 1594422.
+pref("browser.messaging-system.personalized-cfr.scores", "{}");
+pref("browser.messaging-system.personalized-cfr.score-threshold", 5000);
+
+// Experiment Manager
+// See Console.jsm LOG_LEVELS for all possible values
+pref("messaging-system.log", "warn");
+pref("messaging-system.rsexperimentloader.enabled", true);
+pref("messaging-system.rsexperimentloader.collection_id", "nimbus-desktop-experiments");
+
+// Enable the DOM fullscreen API.
+pref("full-screen-api.enabled", true);
+
+// Startup Crash Tracking
+// number of startup crashes that can occur before starting into safe mode automatically
+// (this pref has no effect if more than 6 hours have passed since the last crash)
+pref("toolkit.startup.max_resumed_crashes", 3);
+
+// Whether to use RegisterApplicationRestart to restart the browser and resume
+// the session on next Windows startup
+#if defined(XP_WIN)
+  pref("toolkit.winRegisterApplicationRestart", true);
+#endif
+
+// Completely disable pdf.js as an option to preview pdfs within firefox.
+// Note: if this is not disabled it does not necessarily mean pdf.js is the pdf
+// handler just that it is an option.
+pref("pdfjs.disabled", false);
+// Used by pdf.js to know the first time firefox is run with it installed so it
+// can become the default pdf viewer.
+pref("pdfjs.firstRun", true);
+// The values of preferredAction and alwaysAskBeforeHandling before pdf.js
+// became the default.
+pref("pdfjs.previousHandler.preferredAction", 0);
+pref("pdfjs.previousHandler.alwaysAskBeforeHandling", false);
+
+// Try to convert PDFs sent as octet-stream
+pref("pdfjs.handleOctetStream", true);
+
+// Is the sidebar positioned ahead of the content browser
+pref("sidebar.position_start", true);
+
+pref("security.identitypopup.recordEventTelemetry", true);
+pref("security.protectionspopup.recordEventTelemetry", true);
+pref("security.app_menu.recordEventTelemetry", true);
+
+// Block insecure active content on https pages
+pref("security.mixed_content.block_active_content", true);
+
+// Show in-content login form warning UI for insecure login fields
+pref("security.insecure_field_warning.contextual.enabled", true);
+
+// Show degraded UI for http pages.
+pref("security.insecure_connection_icon.enabled", true);
+// Show degraded UI for http pages in private mode.
+pref("security.insecure_connection_icon.pbmode.enabled", true);
+
+// For secure connections, show gray instead of green lock icon
+pref("security.secure_connection_icon_color_gray", true);
+
+// Show "Not Secure" text for http pages; disabled for now
+pref("security.insecure_connection_text.enabled", false);
+pref("security.insecure_connection_text.pbmode.enabled", false);
+
+// 1 = allow MITM for certificate pinning checks.
+pref("security.cert_pinning.enforcement_level", 1);
+
+
+// If this turns true, Moz*Gesture events are not called stopPropagation()
+// before content.
+pref("dom.debug.propagate_gesture_events_through_content", false);
+
+// CustomizableUI debug logging.
+pref("browser.uiCustomization.debug", false);
+
+// CustomizableUI state of the browser's user interface
+pref("browser.uiCustomization.state", "");
+
+// If set to false, FxAccounts and Sync will be unavailable.
+// A restart is mandatory after flipping that preference.
+pref("identity.fxaccounts.enabled", true);
+
+// The remote FxA root content URL. Must use HTTPS.
+pref("identity.fxaccounts.remote.root", "https://accounts.firefox.com/");
+
+// The value of the context query parameter passed in fxa requests.
+pref("identity.fxaccounts.contextParam", "fx_desktop_v3");
+
+// The remote URL of the FxA Profile Server
+pref("identity.fxaccounts.remote.profile.uri", "https://profile.accounts.firefox.com/v1");
+
+// The remote URL of the FxA OAuth Server
+pref("identity.fxaccounts.remote.oauth.uri", "https://oauth.accounts.firefox.com/v1");
+
+// Whether FxA pairing using QR codes is enabled.
+pref("identity.fxaccounts.pairing.enabled", true);
+
+// The remote URI of the FxA pairing server
+pref("identity.fxaccounts.remote.pairing.uri", "wss://channelserver.services.mozilla.com");
+
+// Token server used by the FxA Sync identity.
+pref("identity.sync.tokenserver.uri", "https://token.services.mozilla.com/1.0/sync/1.5");
+
+// Fetch Sync tokens using the OAuth token function
+pref("identity.sync.useOAuthForSyncToken", true);
+
+// Using session tokens to fetch OAuth tokens
+pref("identity.fxaccounts.useSessionTokensForOAuth", true);
+
+// Auto-config URL for FxA self-hosters, makes an HTTP request to
+// [identity.fxaccounts.autoconfig.uri]/.well-known/fxa-client-configuration
+// This is now the prefered way of pointing to a custom FxA server, instead
+// of making changes to "identity.fxaccounts.*.uri".
+pref("identity.fxaccounts.autoconfig.uri", "");
+
+// URL for help link about Send Tab.
+pref("identity.sendtabpromo.url", "https://support.mozilla.org/1/firefox/%VERSION%/%OS%/%LOCALE%/send-tab");
+
+// URLs for promo links to mobile browsers. Note that consumers are expected to
+// append a value for utm_campaign.
+pref("identity.mobilepromo.android", "https://www.mozilla.org/firefox/android/?utm_source=firefox-browser&utm_medium=firefox-browser&utm_campaign=");
+pref("identity.mobilepromo.ios", "https://www.mozilla.org/firefox/ios/?utm_source=firefox-browser&utm_medium=firefox-browser&utm_campaign=");
+
+// Migrate any existing Firefox Account data from the default profile to the
+// Developer Edition profile.
+#ifdef MOZ_DEV_EDITION
+  pref("identity.fxaccounts.migrateToDevEdition", true);
+#else
+  pref("identity.fxaccounts.migrateToDevEdition", false);
+#endif
+
+// If activated, send tab will use the new FxA commands backend.
+pref("identity.fxaccounts.commands.enabled", true);
+// How often should we try to fetch missed FxA commands on sync (in seconds).
+// Default is 24 hours.
+pref("identity.fxaccounts.commands.missed.fetch_interval", 86400);
+
+// Whether we should run a test-pattern through EME GMPs before assuming they'll
+// decode H.264.
+pref("media.gmp.trial-create.enabled", true);
+
+// Note: when media.gmp-*.visible is true, provided we're running on a
+// supported platform/OS version, the corresponding CDM appears in the
+// plugins list, Firefox will download the GMP/CDM if enabled, and our
+// UI to re-enable EME prompts the user to re-enable EME if it's disabled
+// and script requests EME. If *.visible is false, we won't show the UI
+// to enable the CDM if its disabled; it's as if the keysystem is completely
+// unsupported.
+
+#ifdef MOZ_WIDEVINE_EME
+  pref("media.gmp-widevinecdm.visible", true);
+  pref("media.gmp-widevinecdm.enabled", true);
+#endif
+
+pref("media.gmp-gmpopenh264.visible", true);
+pref("media.gmp-gmpopenh264.enabled", true);
+
+// Set Firefox to block autoplay, asking for permission by default.
+pref("media.autoplay.default", 1); // 0=Allowed, 1=Blocked, 5=All Blocked
+
+#ifdef NIGHTLY_BUILD
+  // Block WebAudio from playing automatically.
+  pref("media.autoplay.block-webaudio", true);
+#else
+  pref("media.autoplay.block-webaudio", false);
+#endif
+
+pref("media.videocontrols.picture-in-picture.enabled", true);
+pref("media.videocontrols.picture-in-picture.video-toggle.enabled", true);
+pref("media.videocontrols.picture-in-picture.keyboard-controls.enabled", true);
+
+#ifdef NIGHTLY_BUILD
+  // Show the audio toggle for Picture-in-Picture.
+  pref("media.videocontrols.picture-in-picture.audio-toggle.enabled", true);
+  // Enable keyboard controls for Picture-in-Picture.
+#else
+  pref("media.videocontrols.picture-in-picture.audio-toggle.enabled", false);
+#endif
+
+pref("browser.translation.detectLanguage", false);
+pref("browser.translation.neverForLanguages", "");
+// Show the translation UI bits, like the info bar, notification icon and preferences.
+pref("browser.translation.ui.show", false);
+// Allows to define the translation engine. Google is default, Bing or Yandex are other options.
+pref("browser.translation.engine", "Google");
+
+// Telemetry settings.
+// Determines if Telemetry pings can be archived locally.
+pref("toolkit.telemetry.archive.enabled", true);
+// Enables sending the shutdown ping when Firefox shuts down.
+pref("toolkit.telemetry.shutdownPingSender.enabled", true);
+// Enables sending the shutdown ping using the pingsender from the first session.
+pref("toolkit.telemetry.shutdownPingSender.enabledFirstSession", false);
+// Enables sending a duplicate of the first shutdown ping from the first session.
+pref("toolkit.telemetry.firstShutdownPing.enabled", true);
+// Enables sending the 'new-profile' ping on new profiles.
+pref("toolkit.telemetry.newProfilePing.enabled", true);
+// Enables sending 'update' pings on Firefox updates.
+pref("toolkit.telemetry.updatePing.enabled", true);
+// Enables sending 'bhr' pings when the browser hangs.
+pref("toolkit.telemetry.bhrPing.enabled", true);
+// Whether to enable Ecosystem Telemetry, requires a restart.
+pref("toolkit.telemetry.ecosystemtelemetry.enabled", false);
+
+// Ping Centre Telemetry settings.
+pref("browser.ping-centre.telemetry", true);
+pref("browser.ping-centre.log", false);
+
+// Enable GMP support in the addon manager.
+pref("media.gmp-provider.enabled", true);
+
+#ifdef NIGHTLY_BUILD
+// Enable Dynamic First-Party Isolation in Nightly.
+pref("network.cookie.cookieBehavior", 5 /* BEHAVIOR_REJECT_TRACKER_AND_PARTITION_FOREIGN */);
+#else
+// Enable blocking access to storage from tracking resources by default.
+pref("network.cookie.cookieBehavior", 4 /* BEHAVIOR_REJECT_TRACKER */);
+#endif
+
+// Enable fingerprinting blocking by default for all channels, only on desktop.
+pref("privacy.trackingprotection.fingerprinting.enabled", true);
+
+// Enable cryptomining blocking by default for all channels, only on desktop.
+pref("privacy.trackingprotection.cryptomining.enabled", true);
+
+pref("browser.contentblocking.database.enabled", true);
+
+pref("dom.storage_access.enabled", true);
+
+pref("browser.contentblocking.cryptomining.preferences.ui.enabled", true);
+pref("browser.contentblocking.fingerprinting.preferences.ui.enabled", true);
+#ifdef NIGHTLY_BUILD
+  // Enable cookieBehavior = BEHAVIOR_REJECT_TRACKER_AND_PARTITION_FOREIGN as an option in the custom category ui
+  pref("browser.contentblocking.reject-and-isolate-cookies.preferences.ui.enabled", true);
+#endif
+// State Partitioning MVP UI.
+pref("browser.contentblocking.state-partitioning.mvp.ui.enabled", true);
+
+// Possible values for browser.contentblocking.features.strict pref:
+//   Tracking Protection:
+//     "tp": tracking protection enabled
+//     "-tp": tracking protection disabled
+//   Tracking Protection in private windows:
+//     "tpPrivate": tracking protection in private windows enabled
+//     "-tpPrivate": tracking protection in private windows disabled
+//   Fingerprinting:
+//     "fp": fingerprinting blocking enabled
+//     "-fp": fingerprinting blocking disabled
+//   Cryptomining:
+//     "cm": cryptomining blocking enabled
+//     "-cm": cryptomining blocking disabled
+//   Social Tracking Protection:
+//     "stp": social tracking protection enabled
+//     "-stp": social tracking protection disabled
+//   Cookie behavior:
+//     "cookieBehavior0": cookie behaviour BEHAVIOR_ACCEPT
+//     "cookieBehavior1": cookie behaviour BEHAVIOR_REJECT_FOREIGN
+//     "cookieBehavior2": cookie behaviour BEHAVIOR_REJECT
+//     "cookieBehavior3": cookie behaviour BEHAVIOR_LIMIT_FOREIGN
+//     "cookieBehavior4": cookie behaviour BEHAVIOR_REJECT_TRACKER
+//     "cookieBehavior5": cookie behaviour BEHAVIOR_REJECT_TRACKER_AND_PARTITION_FOREIGN
+// One value from each section must be included in the browser.contentblocking.features.strict pref.
+pref("browser.contentblocking.features.strict", "tp,tpPrivate,cookieBehavior5,cm,fp,stp,lvl2");
+
+// Hide the "Change Block List" link for trackers/tracking content in the custom
+// Content Blocking/ETP panel. By default, it will not be visible. There is also
+// an UI migration in place to set this pref to true if a user has a custom block
+// lists enabled.
+pref("browser.contentblocking.customBlockList.preferences.ui.enabled", false);
+
+pref("browser.contentblocking.reportBreakage.url", "https://tracking-protection-issues.herokuapp.com/new");
+
+// Enable Protections report's Lockwise card by default.
+pref("browser.contentblocking.report.lockwise.enabled", true);
+
+// Enable Protections report's Monitor card by default.
+pref("browser.contentblocking.report.monitor.enabled", true);
+
+// Disable Protections report's Proxy card by default.
+pref("browser.contentblocking.report.proxy.enabled", false);
+
+// Disable the mobile promotion by default.
+pref("browser.contentblocking.report.show_mobile_app", true);
+
+// Enable the vpn card by default.
+pref("browser.contentblocking.report.vpn.enabled", true);
+// Only show vpn card to certain regions. Comma separated string of two letter ISO 3166-1 country codes.
+pref("browser.contentblocking.report.vpn_regions", "us,ca,nz,sg,my,gb");
+// Comma separated string of mozilla vpn supported platforms.
+pref("browser.contentblocking.report.vpn_platforms", "win");
+pref("browser.contentblocking.report.hide_vpn_banner", false);
+pref("browser.contentblocking.report.vpn_sub_id", "sub_HrfCZF7VPHzZkA");
+
+pref("browser.contentblocking.report.monitor.url", "https://monitor.firefox.com/?entrypoint=protection_report_monitor&utm_source=about-protections");
+pref("browser.contentblocking.report.monitor.how_it_works.url", "https://monitor.firefox.com/about");
+pref("browser.contentblocking.report.monitor.sign_in_url", "https://monitor.firefox.com/oauth/init?entrypoint=protection_report_monitor&utm_source=about-protections&email=");
+pref("browser.contentblocking.report.monitor.preferences_url", "https://monitor.firefox.com/user/preferences");
+pref("browser.contentblocking.report.monitor.home_page_url", "https://monitor.firefox.com/user/dashboard");
+pref("browser.contentblocking.report.manage_devices.url", "https://accounts.firefox.com/settings/clients");
+pref("browser.contentblocking.report.endpoint_url", "https://monitor.firefox.com/user/breach-stats?includeResolved=true");
+pref("browser.contentblocking.report.proxy_extension.url", "https://fpn.firefox.com/browser?utm_source=firefox-desktop&utm_medium=referral&utm_campaign=about-protections&utm_content=about-protections");
+pref("browser.contentblocking.report.mobile-ios.url", "https://apps.apple.com/app/firefox-private-safe-browser/id989804926");
+pref("browser.contentblocking.report.mobile-android.url", "https://play.google.com/store/apps/details?id=org.mozilla.firefox&referrer=utm_source%3Dprotection_report%26utm_content%3Dmobile_promotion");
+pref("browser.contentblocking.report.vpn.url", "https://vpn.mozilla.org/?utm_source=firefox-browser&utm_medium=firefox-browser&utm_campaign=about-protections-card");
+pref("browser.contentblocking.report.vpn-promo.url", "https://vpn.mozilla.org/?utm_source=firefox-browser&utm_medium=firefox-browser&utm_campaign=about-protections-top-promo");
+pref("browser.contentblocking.report.vpn-android.url", "https://play.google.com/store/apps/details?id=org.mozilla.firefox.vpn&referrer=utm_source%3Dfirefox-browser%26utm_medium%3Dfirefox-browser%26utm_campaign%3Dabout-protections-mobile-vpn%26anid%3D--");
+pref("browser.contentblocking.report.vpn-ios.url", "https://apps.apple.com/us/app/firefox-private-network-vpn/id1489407738");
+
+// Protection Report's SUMO urls
+pref("browser.contentblocking.report.lockwise.how_it_works.url", "https://support.mozilla.org/1/firefox/%VERSION%/%OS%/%LOCALE%/password-manager-report");
+pref("browser.contentblocking.report.social.url", "https://support.mozilla.org/1/firefox/%VERSION%/%OS%/%LOCALE%/social-media-tracking-report");
+pref("browser.contentblocking.report.cookie.url", "https://support.mozilla.org/1/firefox/%VERSION%/%OS%/%LOCALE%/cross-site-tracking-report");
+pref("browser.contentblocking.report.tracker.url", "https://support.mozilla.org/1/firefox/%VERSION%/%OS%/%LOCALE%/tracking-content-report");
+pref("browser.contentblocking.report.fingerprinter.url", "https://support.mozilla.org/1/firefox/%VERSION%/%OS%/%LOCALE%/fingerprinters-report");
+pref("browser.contentblocking.report.cryptominer.url", "https://support.mozilla.org/1/firefox/%VERSION%/%OS%/%LOCALE%/cryptominers-report");
+
+pref("browser.contentblocking.cfr-milestone.enabled", true);
+pref("browser.contentblocking.cfr-milestone.milestone-achieved", 0);
+// Milestones should always be in increasing order
+pref("browser.contentblocking.cfr-milestone.milestones", "[1000, 5000, 10000, 25000, 50000, 100000, 250000, 314159, 500000, 750000, 1000000, 1250000, 1500000, 1750000, 2000000, 2250000, 2500000, 8675309]");
+
+// Enables the new Protections Panel.
+#ifdef NIGHTLY_BUILD
+  pref("browser.protections_panel.enabled", true);
+  pref("browser.protections_panel.infoMessage.seen", false);
+#endif
+
+// Always enable newtab segregation using containers
+pref("privacy.usercontext.about_newtab_segregation.enabled", true);
+// Enable Contextual Identity Containers
+#ifdef NIGHTLY_BUILD
+  pref("privacy.userContext.enabled", true);
+  pref("privacy.userContext.ui.enabled", true);
+#else
+  pref("privacy.userContext.enabled", false);
+  pref("privacy.userContext.ui.enabled", false);
+#endif
+pref("privacy.userContext.extension", "");
+// allows user to open container menu on a left click instead of a new
+// tab in the default container
+pref("privacy.userContext.newTabContainerOnLeftClick.enabled", false);
+
+#if defined(NIGHTLY_BUILD) || defined(XP_WIN) || defined(XP_MACOSX)
+// Set to true to allow the user to silence all notifications when
+// sharing the screen. Only shipping on Windows and macOS out to
+// release. Enabled for all desktop platforms on Nightly.
+pref("privacy.webrtc.allowSilencingNotifications", true);
+// Set to true to use the legacy WebRTC global indicator
+pref("privacy.webrtc.legacyGlobalIndicator", false);
+pref("privacy.webrtc.hideGlobalIndicator", false);
+#else
+pref("privacy.webrtc.allowSilencingNotifications", false);
+pref("privacy.webrtc.legacyGlobalIndicator", true);
+#endif
+
+// Set to true to add toggles to the WebRTC indicator for globally
+// muting the camera and microphone.
+pref("privacy.webrtc.globalMuteToggles", false);
+
+// Set to true to enable a warning displayed when attempting
+// to switch tabs in a window that's being shared over WebRTC.
+pref("privacy.webrtc.sharedTabWarning", false);
+
+// Start the browser in e10s mode
+pref("browser.tabs.remote.autostart", true);
+pref("browser.tabs.remote.desktopbehavior", true);
+
+// Run media transport in a separate process?
+#ifdef EARLY_BETA_OR_EARLIER
+  pref("media.peerconnection.mtransport_process", true);
+#else
+  pref("media.peerconnection.mtransport_process", false);
+#endif
+
+// For speculatively warming up tabs to improve perceived
+// performance while using the async tab switcher.
+pref("browser.tabs.remote.warmup.enabled", true);
+
+// Caches tab layers to improve perceived performance
+// of tab switches.
+pref("browser.tabs.remote.tabCacheSize", 0);
+
+pref("browser.tabs.remote.warmup.maxTabs", 3);
+pref("browser.tabs.remote.warmup.unloadDelayMs", 2000);
+
+// For the about:tabcrashed page
+pref("browser.tabs.crashReporting.sendReport", true);
+pref("browser.tabs.crashReporting.includeURL", false);
+pref("browser.tabs.crashReporting.requestEmail", false);
+pref("browser.tabs.crashReporting.emailMe", false);
+pref("browser.tabs.crashReporting.email", "");
+
+// If true, unprivileged extensions may use experimental APIs on
+// nightly and developer edition.
+pref("extensions.experiments.enabled", false);
+
+#if defined(XP_WIN)
+  // Allows us to deprioritize the processes of background tabs at an OS level
+  pref("dom.ipc.processPriorityManager.enabled", true);
+#endif
+
+// Don't limit how many nodes we care about on desktop:
+pref("reader.parse-node-limit", 0);
+
+// On desktop, we want the URLs to be included here for ease of debugging,
+// and because (normally) these errors are not persisted anywhere.
+pref("reader.errors.includeURLs", true);
+
+pref("view_source.tab", true);
+
+pref("dom.serviceWorkers.enabled", true);
+
+// Enable Push API.
+pref("dom.push.enabled", true);
+
+// These are the thumbnail width/height set in about:newtab.
+// If you change this, ENSURE IT IS THE SAME SIZE SET
+// by about:newtab. These values are in CSS pixels.
+pref("toolkit.pageThumbs.minWidth", 280);
+pref("toolkit.pageThumbs.minHeight", 190);
+
+// Enable speech synthesis
+pref("media.webspeech.synth.enabled", true);
+
+pref("browser.esedbreader.loglevel", "Error");
+
+pref("browser.laterrun.enabled", false);
+
+pref("dom.ipc.processPrelaunch.enabled", true);
+
+// See comments in bug 1340115 on how we got to these numbers.
+pref("browser.migrate.chrome.history.limit", 2000);
+pref("browser.migrate.chrome.history.maxAgeInDays", 180);
+pref("browser.migrate.showBookmarksToolbarAfterMigration", true);
+
+pref("extensions.pocket.api", "api.getpocket.com");
+pref("extensions.pocket.enabled", true);
+pref("extensions.pocket.oAuthConsumerKey", "40249-e88c401e1b1f2242d9e441c4");
+pref("extensions.pocket.site", "getpocket.com");
+pref("extensions.pocket.onSaveRecs", true);
+pref("extensions.pocket.onSaveRecs.locales", "en-US,en-GB,en-CA");
+
+// Control what version of the logged out doorhanger is displayed
+// Possibilities are: `control`, `control-one-button`, `variant_a`, `variant_b`, `variant_c`
+pref("extensions.pocket.loggedOutVariant", "control");
+
+#ifdef NIGHTLY_BUILD
+pref("signon.management.page.fileImport.enabled", true);
+pref("signon.management.page.os-auth.enabled", true);
+#else
+pref("signon.management.page.fileImport.enabled", false);
+pref("signon.management.page.os-auth.enabled", false);
+#endif
+pref("signon.management.page.breach-alerts.enabled", true);
+pref("signon.management.page.vulnerable-passwords.enabled", true);
+pref("signon.management.page.sort", "name");
+// The utm_creative value is appended within the code (specific to the location on
+// where it is clicked). Be sure that if these two prefs are updated, that
+// the utm_creative param be last.
+pref("signon.management.page.breachAlertUrl",
+     "https://monitor.firefox.com/breach-details/");
+pref("signon.management.page.showPasswordSyncNotification", true);
+pref("signon.passwordEditCapture.enabled", true);
+pref("signon.showAutoCompleteFooter", true);
+pref("signon.showAutoCompleteImport", "import");
+pref("signon.suggestImportCount", 3);
+
+// Enable the "Simplify Page" feature in Print Preview. This feature
+// is disabled by default in toolkit.
+pref("print.use_simplify_page", true);
+
+// Space separated list of URLS that are allowed to send objects (instead of
+// only strings) through webchannels. This list is duplicated in mobile/android/app/mobile.js
+pref("webchannel.allowObject.urlWhitelist", "https://content.cdn.mozilla.net https://support.mozilla.org https://install.mozilla.org");
+
+// Whether or not the browser should scan for unsubmitted
+// crash reports, and then show a notification for submitting
+// those reports.
+#ifdef NIGHTLY_BUILD
+  pref("browser.crashReports.unsubmittedCheck.enabled", true);
+#else
+  pref("browser.crashReports.unsubmittedCheck.enabled", false);
+#endif
+
+// chancesUntilSuppress is how many times we'll show the unsubmitted
+// crash report notification across different days and shutdown
+// without a user choice before we suppress the notification for
+// some number of days.
+pref("browser.crashReports.unsubmittedCheck.chancesUntilSuppress", 4);
+pref("browser.crashReports.unsubmittedCheck.autoSubmit2", false);
+
+// Preferences for the form autofill system extension
+// The truthy values of "extensions.formautofill.available" are "on" and "detect",
+// any other value means autofill isn't available.
+// "detect" means it's enabled if conditions defined in the extension are met.
+pref("extensions.formautofill.available", "detect");
+pref("extensions.formautofill.addresses.enabled", true);
+pref("extensions.formautofill.addresses.capture.enabled", false);
+pref("extensions.formautofill.creditCards.available", true);
+pref("extensions.formautofill.creditCards.enabled", true);
+// Checkbox in sync options for credit card data sync service
+pref("services.sync.engine.creditcards.available", true);
+// Temporary preference to control displaying the UI elements for
+// credit card autofill used for the duration of the A/B test.
+pref("extensions.formautofill.creditCards.hideui", false);
+// Pref for shield/heartbeat to recognize users who have used Credit Card
+// Autofill. The valid values can be:
+// 0: none
+// 1: submitted a manually-filled credit card form (but didn't see the doorhanger
+//    because of a duplicate profile in the storage)
+// 2: saw the doorhanger
+// 3: submitted an autofill'ed credit card form
+pref("extensions.formautofill.creditCards.used", 0);
+pref("extensions.formautofill.firstTimeUse", true);
+pref("extensions.formautofill.heuristics.enabled", true);
+// Whether the user enabled the OS re-auth dialog.
+pref("extensions.formautofill.reauth.enabled", false);
+pref("extensions.formautofill.section.enabled", true);
+pref("extensions.formautofill.loglevel", "Warn");
+
+pref("toolkit.osKeyStore.loglevel", "Warn");
+
+pref("extensions.formautofill.supportedCountries", "US,CA");
+pref("extensions.formautofill.supportRTL", false);
+
+// Whether or not to restore a session with lazy-browser tabs.
+pref("browser.sessionstore.restore_tabs_lazily", true);
+
+pref("browser.suppress_first_window_animation", true);
+
+// Preference that allows individual users to disable Screenshots.
+pref("extensions.screenshots.disabled", false);
+// Preference that allows individual users to leave Screenshots enabled, but
+// disable uploading to the server.
+pref("extensions.screenshots.upload-disabled", false);
+
+// DoH Rollout: whether to enable automatic performance-based TRR-selection.
+// This pref is controlled by a Normandy rollout so we don't overload providers.
+pref("doh-rollout.trr-selection.enabled", false);
+
+// DoH Rollout: whether to enable automatic steering to provider endpoints.
+// This pref is also controlled by a Normandy rollout.
+pref("doh-rollout.provider-steering.enabled", false);
+
+// DoH Rollout: provider details for automatic steering.
+pref("doh-rollout.provider-steering.provider-list", "[{ \"name\": \"comcast\", \"canonicalName\": \"doh-discovery.xfinity.com\", \"uri\": \"https://doh.xfinity.com/dns-query\" }]");
+
+// DoH Rollout: whether to clear the mode value at shutdown.
+pref("doh-rollout.clearModeOnShutdown", false);
+
+// URL for Learn More link for browser error logging in preferences
+pref("browser.chrome.errorReporter.infoURL",
+     "https://support.mozilla.org/1/firefox/%VERSION%/%OS%/%LOCALE%/nightly-error-collection");
+
+// Normandy client preferences
+pref("app.normandy.api_url", "https://normandy.cdn.mozilla.net/api/v1");
+pref("app.normandy.dev_mode", false);
+pref("app.normandy.enabled", true);
+pref("app.normandy.first_run", true);
+pref("app.normandy.logging.level", 50); // Warn
+pref("app.normandy.run_interval_seconds", 21600); // 6 hours
+pref("app.normandy.shieldLearnMoreUrl", "https://support.mozilla.org/1/firefox/%VERSION%/%OS%/%LOCALE%/shield");
+pref("app.normandy.last_seen_buildid", "");
+pref("app.normandy.onsync_skew_sec", 600);
+#ifdef MOZ_DATA_REPORTING
+  pref("app.shield.optoutstudies.enabled", true);
+#else
+  pref("app.shield.optoutstudies.enabled", false);
+#endif
+
+// Multi-lingual preferences
+#if defined(RELEASE_OR_BETA) && !defined(MOZ_DEV_EDITION)
+  pref("intl.multilingual.enabled", true);
+  pref("intl.multilingual.downloadEnabled", true);
+#else
+  pref("intl.multilingual.enabled", false);
+  // AMO only serves language packs for release and beta versions.
+  pref("intl.multilingual.downloadEnabled", false);
+#endif
+
+// Simulate conditions that will happen when the browser
+// is running with Fission enabled. This is meant to assist
+// development and testing of Fission.
+// The current simulated conditions are:
+// - Don't propagate events from subframes to JS child actors
+pref("fission.frontend.simulate-events", false);
+// - Only deliver subframe messages that specifies
+//   their destination (using the BrowsingContext id).
+pref("fission.frontend.simulate-messages", false);
+
+// Coverage ping is disabled by default.
+pref("toolkit.coverage.enabled", false);
+pref("toolkit.coverage.endpoint.base", "https://coverage.mozilla.org");
+
+// Discovery prefs
+pref("browser.discovery.enabled", true);
+pref("browser.discovery.containers.enabled", true);
+pref("browser.discovery.sites", "addons.mozilla.org");
+
+pref("browser.engagement.recent_visited_origins.expiry", 86400); // 24 * 60 * 60 (24 hours in seconds)
+pref("browser.engagement.downloads-button.has-used", false);
+pref("browser.engagement.fxa-toolbar-menu-button.has-used", false);
+pref("browser.engagement.home-button.has-used", false);
+pref("browser.engagement.sidebar-button.has-used", false);
+pref("browser.engagement.library-button.has-used", false);
+pref("browser.engagement.ctrlTab.has-used", false);
+
+pref("browser.aboutConfig.showWarning", true);
+
+pref("browser.toolbars.keyboard_navigation", true);
+
+// The visibility of the bookmarks toolbar.
+// "newtab": Show on the New Tab Page
+// "always": Always show
+// "never": Never show
+pref("browser.toolbars.bookmarks.visibility", "newtab");
+
+// Visibility of the "Show Other Bookmarks" menuitem in the
+// bookmarks toolbar contextmenu.
+pref("browser.toolbars.bookmarks.showOtherBookmarks", true);
+
+// When true, this pref will always show the bookmarks bar on
+// the New Tab Page, and other functionality to improve the usage of the
+// Bookmarks Toolbar.
+pref("browser.toolbars.bookmarks.2h2020", true);
+
+// Prefs to control the Firefox Account toolbar menu.
+// This pref will surface existing Firefox Account information
+// as a button next to the hamburger menu. It allows
+// quick access to sign-in and manage your Firefox Account.
+pref("identity.fxaccounts.toolbar.enabled", true);
+pref("identity.fxaccounts.toolbar.accessed", false);
+
+// Prefs for different services supported by Firefox Account
+pref("identity.fxaccounts.service.monitorLoginUrl", "https://monitor.firefox.com/");
+
+// Check bundled omni JARs for corruption.
+pref("corroborator.enabled", true);
+
+// Toolbox preferences
+pref("devtools.toolbox.footer.height", 250);
+pref("devtools.toolbox.sidebar.width", 500);
+pref("devtools.toolbox.host", "bottom");
+pref("devtools.toolbox.previousHost", "right");
+pref("devtools.toolbox.selectedTool", "inspector");
+pref("devtools.toolbox.sideEnabled", true);
+pref("devtools.toolbox.zoomValue", "1");
+pref("devtools.toolbox.splitconsoleEnabled", false);
+pref("devtools.toolbox.splitconsoleHeight", 100);
+pref("devtools.toolbox.tabsOrder", "");
+
+// The fission pref for enabling the "Multiprocess Browser Toolbox", which will
+// make it possible to debug anything in Firefox (See Bug 1570639 for more
+// information).
+#if defined(NIGHTLY_BUILD)
+pref("devtools.browsertoolbox.fission", true);
+#else
+pref("devtools.browsertoolbox.fission", false);
+#endif
+
+// This pref is also related to fission, but not only. It allows the toolbox
+// to stay open even if the debugged tab switches to another process.
+// It can happen between two documents, one running in the parent process like
+// about:sessionrestore and another one running in the content process like
+// any web page. Or between two distinct domain when running with fission turned
+// on. See bug 1565263.
+pref("devtools.target-switching.enabled", true);
+
+// Toolbox Button preferences
+pref("devtools.command-button-pick.enabled", true);
+pref("devtools.command-button-frames.enabled", true);
+pref("devtools.command-button-splitconsole.enabled", true);
+pref("devtools.command-button-paintflashing.enabled", false);
+pref("devtools.command-button-responsive.enabled", true);
+pref("devtools.command-button-screenshot.enabled", false);
+pref("devtools.command-button-rulers.enabled", false);
+pref("devtools.command-button-measure.enabled", false);
+pref("devtools.command-button-noautohide.enabled", false);
+pref("devtools.command-button-errorcount.enabled", true);
+#ifndef MOZILLA_OFFICIAL
+  pref("devtools.command-button-fission-prefs.enabled", true);
+#endif
+
+// Inspector preferences
+// Enable the Inspector
+pref("devtools.inspector.enabled", true);
+// What was the last active sidebar in the inspector
+pref("devtools.inspector.activeSidebar", "layoutview");
+pref("devtools.inspector.remote", false);
+
+// Enable the 3 pane mode in the inspector
+pref("devtools.inspector.three-pane-enabled", true);
+// Enable the 3 pane mode in the chrome inspector
+pref("devtools.inspector.chrome.three-pane-enabled", false);
+// Collapse pseudo-elements by default in the rule-view
+pref("devtools.inspector.show_pseudo_elements", false);
+// The default size for image preview tooltips in the rule-view/computed-view/markup-view
+pref("devtools.inspector.imagePreviewTooltipSize", 300);
+// Enable user agent style inspection in rule-view
+pref("devtools.inspector.showUserAgentStyles", false);
+// Show native anonymous content and user agent shadow roots
+pref("devtools.inspector.showAllAnonymousContent", false);
+// Enable the new Rules View
+pref("devtools.inspector.new-rulesview.enabled", false);
+// Enable the inline CSS compatiblity warning in inspector rule view
+pref("devtools.inspector.ruleview.inline-compatibility-warning.enabled", false);
+// Enable the compatibility tool in the inspector.
+#if defined(NIGHTLY_BUILD) || defined(MOZ_DEV_EDITION)
+pref("devtools.inspector.compatibility.enabled", true);
+#else
+pref("devtools.inspector.compatibility.enabled", false);
+#endif
+// Enable color scheme simulation in the inspector.
+pref("devtools.inspector.color-scheme-simulation.enabled", false);
+// Enable overflow debugging in the inspector.
+pref("devtools.overflow.debugging.enabled", true);
+
+// Grid highlighter preferences
+pref("devtools.gridinspector.gridOutlineMaxColumns", 50);
+pref("devtools.gridinspector.gridOutlineMaxRows", 50);
+pref("devtools.gridinspector.showGridAreas", false);
+pref("devtools.gridinspector.showGridLineNumbers", false);
+pref("devtools.gridinspector.showInfiniteLines", false);
+// Max number of grid highlighters that can be displayed
+pref("devtools.gridinspector.maxHighlighters", 3);
+
+// Whether or not the box model panel is opened in the layout view
+pref("devtools.layout.boxmodel.opened", true);
+// Whether or not the flexbox panel is opened in the layout view
+pref("devtools.layout.flexbox.opened", true);
+// Whether or not the flexbox container panel is opened in the layout view
+pref("devtools.layout.flex-container.opened", true);
+// Whether or not the flexbox item panel is opened in the layout view
+pref("devtools.layout.flex-item.opened", true);
+// Whether or not the grid inspector panel is opened in the layout view
+pref("devtools.layout.grid.opened", true);
+
+// Enable hovering Box Model values and jumping to their source CSS rule in the
+// rule-view.
+#if defined(NIGHTLY_BUILD)
+  pref("devtools.layout.boxmodel.highlightProperty", true);
+#else
+  pref("devtools.layout.boxmodel.highlightProperty", false);
+#endif
+
+// By how many times eyedropper will magnify pixels
+pref("devtools.eyedropper.zoom", 6);
+
+// Enable to collapse attributes that are too long.
+pref("devtools.markup.collapseAttributes", true);
+// Length to collapse attributes
+pref("devtools.markup.collapseAttributeLength", 120);
+// Whether to auto-beautify the HTML on copy.
+pref("devtools.markup.beautifyOnCopy", false);
+// Whether or not the DOM mutation breakpoints context menu are enabled in the
+// markup view.
+pref("devtools.markup.mutationBreakpoints.enabled", true);
+
+// DevTools default color unit
+pref("devtools.defaultColorUnit", "authored");
+
+// Enable the Memory tools
+pref("devtools.memory.enabled", true);
+
+pref("devtools.memory.custom-census-displays", "{}");
+pref("devtools.memory.custom-label-displays", "{}");
+pref("devtools.memory.custom-tree-map-displays", "{}");
+
+pref("devtools.memory.max-individuals", 1000);
+pref("devtools.memory.max-retaining-paths", 10);
+
+// Enable the Performance tools
+pref("devtools.performance.enabled", true);
+
+// The default Performance UI settings
+pref("devtools.performance.memory.sample-probability", "0.05");
+// Can't go higher than this without causing internal allocation overflows while
+// serializing the allocations data over the RDP.
+pref("devtools.performance.memory.max-log-length", 125000);
+pref("devtools.performance.timeline.hidden-markers",
+  "[\"Composite\",\"CompositeForwardTransaction\"]");
+pref("devtools.performance.profiler.buffer-size", 10000000);
+pref("devtools.performance.profiler.sample-frequency-hz", 1000);
+pref("devtools.performance.ui.invert-call-tree", true);
+pref("devtools.performance.ui.invert-flame-graph", false);
+pref("devtools.performance.ui.flatten-tree-recursion", true);
+pref("devtools.performance.ui.show-platform-data", false);
+pref("devtools.performance.ui.show-idle-blocks", true);
+pref("devtools.performance.ui.enable-memory", false);
+pref("devtools.performance.ui.enable-allocations", false);
+pref("devtools.performance.ui.enable-framerate", true);
+pref("devtools.performance.ui.show-jit-optimizations", false);
+pref("devtools.performance.ui.show-triggers-for-gc-types",
+  "TOO_MUCH_MALLOC ALLOC_TRIGGER LAST_DITCH EAGER_ALLOC_TRIGGER");
+
+// Temporary pref disabling memory flame views
+// TODO remove once we have flame charts via bug 1148663
+pref("devtools.performance.ui.enable-memory-flame", false);
+
+// Enable experimental options in the UI only in Nightly
+#if defined(NIGHTLY_BUILD)
+  pref("devtools.performance.ui.experimental", true);
+#else
+  pref("devtools.performance.ui.experimental", false);
+#endif
+
+// The default cache UI setting
+pref("devtools.cache.disabled", false);
+
+// The default service workers UI setting
+pref("devtools.serviceWorkers.testing.enabled", false);
+
+// Enable the Network Monitor
+pref("devtools.netmonitor.enabled", true);
+
+pref("devtools.netmonitor.features.search", true);
+pref("devtools.netmonitor.features.requestBlocking", true);
+
+// Enable the Application panel
+pref("devtools.application.enabled", true);
+
+// The default Network Monitor UI settings
+pref("devtools.netmonitor.panes-network-details-width", 550);
+pref("devtools.netmonitor.panes-network-details-height", 450);
+pref("devtools.netmonitor.panes-search-width", 550);
+pref("devtools.netmonitor.panes-search-height", 450);
+pref("devtools.netmonitor.filters", "[\"all\"]");
+pref("devtools.netmonitor.visibleColumns",
+    "[\"status\",\"method\",\"domain\",\"file\",\"initiator\",\"type\",\"transferred\",\"contentSize\",\"waterfall\"]"
+);
+pref("devtools.netmonitor.columnsData",
+  '[{"name":"status","minWidth":30,"width":5}, {"name":"method","minWidth":30,"width":5}, {"name":"domain","minWidth":30,"width":10}, {"name":"file","minWidth":30,"width":25}, {"name":"url","minWidth":30,"width":25},{"name":"initiator","minWidth":30,"width":10},{"name":"type","minWidth":30,"width":5},{"name":"transferred","minWidth":30,"width":10},{"name":"contentSize","minWidth":30,"width":5},{"name":"waterfall","minWidth":150,"width":15}]');
+pref("devtools.netmonitor.msg.payload-preview-height", 128);
+pref("devtools.netmonitor.msg.visibleColumns",
+  '["data", "time"]'
+);
+pref("devtools.netmonitor.msg.displayed-messages.limit", 500);
+
+pref("devtools.netmonitor.response.ui.limit", 10240);
+
+// Save request/response bodies yes/no.
+pref("devtools.netmonitor.saveRequestAndResponseBodies", true);
+
+// The default Network monitor HAR export setting
+pref("devtools.netmonitor.har.defaultLogDir", "");
+pref("devtools.netmonitor.har.defaultFileName", "%hostname_Archive [%date]");
+pref("devtools.netmonitor.har.jsonp", false);
+pref("devtools.netmonitor.har.jsonpCallback", "");
+pref("devtools.netmonitor.har.includeResponseBodies", true);
+pref("devtools.netmonitor.har.compress", false);
+pref("devtools.netmonitor.har.forceExport", false);
+pref("devtools.netmonitor.har.pageLoadedTimeout", 1500);
+pref("devtools.netmonitor.har.enableAutoExportToFile", false);
+
+pref("devtools.netmonitor.features.webSockets", true);
+
+// netmonitor audit
+pref("devtools.netmonitor.audits.slow", 500);
+
+// Enable the EventSource Inspector
+pref("devtools.netmonitor.features.serverSentEvents", true);
+
+// Enable the Storage Inspector
+pref("devtools.storage.enabled", true);
+
+// Enable the Style Editor.
+pref("devtools.styleeditor.enabled", true);
+pref("devtools.styleeditor.autocompletion-enabled", true);
+pref("devtools.styleeditor.showMediaSidebar", true);
+pref("devtools.styleeditor.mediaSidebarWidth", 238);
+pref("devtools.styleeditor.navSidebarWidth", 245);
+pref("devtools.styleeditor.transitions", true);
+
+// Screenshot Option Settings.
+pref("devtools.screenshot.clipboard.enabled", false);
+pref("devtools.screenshot.audio.enabled", true);
+
+// Make sure the DOM panel is hidden by default
+pref("devtools.dom.enabled", false);
+
+// Enable the Accessibility panel.
+pref("devtools.accessibility.enabled", true);
+
+// Web console filters
+pref("devtools.webconsole.filter.error", true);
+pref("devtools.webconsole.filter.warn", true);
+pref("devtools.webconsole.filter.info", true);
+pref("devtools.webconsole.filter.log", true);
+pref("devtools.webconsole.filter.debug", true);
+pref("devtools.webconsole.filter.css", false);
+pref("devtools.webconsole.filter.net", false);
+pref("devtools.webconsole.filter.netxhr", false);
+
+// Webconsole autocomplete preference
+pref("devtools.webconsole.input.autocomplete",true);
+
+// Show context selector in console input, in the browser toolbox
+#if defined(NIGHTLY_BUILD)
+  pref("devtools.webconsole.input.context", true);
+#else
+  pref("devtools.webconsole.input.context", false);
+#endif
+
+// Show context selector in console input, in the content toolbox
+pref("devtools.contenttoolbox.webconsole.input.context", false);
+
+// Set to true to eagerly show the results of webconsole terminal evaluations
+// when they don't have side effects.
+pref("devtools.webconsole.input.eagerEvaluation", true);
+
+// Browser console filters
+pref("devtools.browserconsole.filter.error", true);
+pref("devtools.browserconsole.filter.warn", true);
+pref("devtools.browserconsole.filter.info", true);
+pref("devtools.browserconsole.filter.log", true);
+pref("devtools.browserconsole.filter.debug", true);
+pref("devtools.browserconsole.filter.css", false);
+pref("devtools.browserconsole.filter.net", false);
+pref("devtools.browserconsole.filter.netxhr", false);
+
+// Max number of inputs to store in web console history.
+pref("devtools.webconsole.inputHistoryCount", 300);
+
+// Persistent logging: |true| if you want the relevant tool to keep all of the
+// logged messages after reloading the page, |false| if you want the output to
+// be cleared each time page navigation happens.
+pref("devtools.webconsole.persistlog", false);
+pref("devtools.netmonitor.persistlog", false);
+
+// Web Console timestamp: |true| if you want the logs and instructions
+// in the Web Console to display a timestamp, or |false| to not display
+// any timestamps.
+pref("devtools.webconsole.timestampMessages", false);
+
+// Enable the webconsole sidebar toggle in Nightly builds.
+#if defined(NIGHTLY_BUILD)
+  pref("devtools.webconsole.sidebarToggle", true);
+#else
+  pref("devtools.webconsole.sidebarToggle", false);
+#endif
+
+// Saved editor mode state in the console.
+pref("devtools.webconsole.input.editor", false);
+pref("devtools.browserconsole.input.editor", false);
+
+// Editor width for webconsole and browserconsole.
+pref("devtools.webconsole.input.editorWidth", 0);
+pref("devtools.browserconsole.input.editorWidth", 0);
+
+// Display an onboarding UI for the Editor mode.
+pref("devtools.webconsole.input.editorOnboarding", true);
+
+// Disable the new performance recording panel by default
+pref("devtools.performance.new-panel-enabled", false);
+
+// Enable message grouping in the console, true by default
+pref("devtools.webconsole.groupWarningMessages", true);
+
+// Saved state of the Display content messages checkbox in the browser console.
+pref("devtools.browserconsole.contentMessages", false);
+
+// Enable client-side mapping service for source maps
+pref("devtools.source-map.client-service.enabled", true);
+
+// The number of lines that are displayed in the web console.
+pref("devtools.hud.loglimit", 10000);
+
+// The developer tools editor configuration:
+// - tabsize: how many spaces to use when a Tab character is displayed.
+// - expandtab: expand Tab characters to spaces.
+// - keymap: which keymap to use (can be 'default', 'emacs' or 'vim')
+// - autoclosebrackets: whether to permit automatic bracket/quote closing.
+// - detectindentation: whether to detect the indentation from the file
+// - enableCodeFolding: Whether to enable code folding or not.
+pref("devtools.editor.tabsize", 2);
+pref("devtools.editor.expandtab", true);
+pref("devtools.editor.keymap", "default");
+pref("devtools.editor.autoclosebrackets", true);
+pref("devtools.editor.detectindentation", true);
+pref("devtools.editor.enableCodeFolding", true);
+pref("devtools.editor.autocomplete", true);
+
+// The angle of the viewport.
+pref("devtools.responsive.viewport.angle", 0);
+// The width of the viewport.
+pref("devtools.responsive.viewport.width", 320);
+// The height of the viewport.
+pref("devtools.responsive.viewport.height", 480);
+// The pixel ratio of the viewport.
+pref("devtools.responsive.viewport.pixelRatio", 0);
+// Whether or not the viewports are left aligned.
+pref("devtools.responsive.leftAlignViewport.enabled", false);
+// Whether to reload when touch simulation is toggled
+pref("devtools.responsive.reloadConditions.touchSimulation", false);
+// Whether to reload when user agent is changed
+pref("devtools.responsive.reloadConditions.userAgent", false);
+// Whether to show the notification about reloading to apply emulation
+pref("devtools.responsive.reloadNotification.enabled", true);
+// Whether or not touch simulation is enabled.
+pref("devtools.responsive.touchSimulation.enabled", false);
+// Whether or not meta viewport is enabled, if and only if touchSimulation
+// is also enabled.
+pref("devtools.responsive.metaViewport.enabled", true);
+// The user agent of the viewport.
+pref("devtools.responsive.userAgent", "");
+
+// Show the custom user agent input only in Nightly.
+#if defined(NIGHTLY_BUILD)
+  pref("devtools.responsive.showUserAgentInput", true);
+#else
+  pref("devtools.responsive.showUserAgentInput", false);
+#endif
+
+// Show tab debug targets for This Firefox (on by default for local builds).
+#ifdef MOZILLA_OFFICIAL
+  pref("devtools.aboutdebugging.local-tab-debugging", false);
+#else
+  pref("devtools.aboutdebugging.local-tab-debugging", true);
+#endif
+
+// Show process debug targets.
+pref("devtools.aboutdebugging.process-debugging", true);
+// Stringified array of network locations that users can connect to.
+pref("devtools.aboutdebugging.network-locations", "[]");
+// Debug target pane collapse/expand settings.
+pref("devtools.aboutdebugging.collapsibilities.installedExtension", false);
+pref("devtools.aboutdebugging.collapsibilities.otherWorker", false);
+pref("devtools.aboutdebugging.collapsibilities.serviceWorker", false);
+pref("devtools.aboutdebugging.collapsibilities.sharedWorker", false);
+pref("devtools.aboutdebugging.collapsibilities.tab", false);
+pref("devtools.aboutdebugging.collapsibilities.temporaryExtension", false);
+
+// about:debugging: only show system and hidden extensions in local builds by
+// default.
+#ifdef MOZILLA_OFFICIAL
+  pref("devtools.aboutdebugging.showHiddenAddons", false);
+#else
+  pref("devtools.aboutdebugging.showHiddenAddons", true);
+#endif
+
+// Map top-level await expressions in the console
+pref("devtools.debugger.features.map-await-expression", true);
+
+// This relies on javascript.options.asyncstack as well or it has no effect.
+pref("devtools.debugger.features.async-captured-stacks", true);
+pref("devtools.debugger.features.async-live-stacks", false);
+
+// Disable autohide for DevTools popups and tooltips.
+// This is currently not exposed by any UI to avoid making
+// about:devtools-toolbox tabs unusable by mistake.
+pref("devtools.popup.disable_autohide", false);
+
+// FirstStartup service time-out in ms
+pref("first-startup.timeout", 30000);
+
+// Enable the default browser agent.
+// The agent still runs as scheduled if this pref is disabled,
+// but it exits immediately before taking any action.
+#ifdef XP_WIN
+  pref("default-browser-agent.enabled", true);
+#endif
+
+// Test Prefs that do nothing for testing
+#if defined(EARLY_BETA_OR_EARLIER)
+  pref("app.normandy.test-prefs.bool", false);
+  pref("app.normandy.test-prefs.integer", 0);
+  pref("app.normandy.test-prefs.string", "");
+#endif