blob: 7fdf17ca7dd49a62cb05c30d4f1af6a38271edc8 [file] [log] [blame]
// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/common/chrome_features.h"
#include "base/command_line.h"
#include "build/build_config.h"
#include "chrome/common/chrome_switches.h"
#include "extensions/features/features.h"
#include "ppapi/features/features.h"
namespace features {
// All features in alphabetical order.
// Enables Ads Metrics.
const base::Feature kAdsFeature{"AdsMetrics", base::FEATURE_ENABLED_BY_DEFAULT};
#if defined(OS_ANDROID)
const base::Feature kAllowAutoplayUnmutedInWebappManifestScope{
"AllowAutoplayUnmutedInWebappManifestScope",
base::FEATURE_ENABLED_BY_DEFAULT};
#endif // defined(OS_ANDROID)
#if defined(OS_MACOSX)
// Enables Javascript execution via AppleScript.
const base::Feature kAppleScriptExecuteJavaScriptMenuItem{
"AppleScriptExecuteJavaScriptMenuItem", base::FEATURE_DISABLED_BY_DEFAULT};
// Enables the "this OS is obsolete" infobar on Mac 10.9.
// TODO(ellyjones): Remove this after the last 10.9 release.
const base::Feature kShow10_9ObsoleteInfobar{"Show109ObsoleteInfobar",
base::FEATURE_DISABLED_BY_DEFAULT};
// Enables the fullscreen toolbar to reveal itself if it's hidden.
const base::Feature kFullscreenToolbarReveal{"FullscreenToolbarReveal",
base::FEATURE_DISABLED_BY_DEFAULT};
// Use toolkit-views for profile chooser menu.
const base::Feature kViewsProfileChooser{"ViewsProfileChooser",
base::FEATURE_ENABLED_BY_DEFAULT};
// Use the Toolkit-Views Task Manager window.
const base::Feature kViewsTaskManager{"ViewsTaskManager",
base::FEATURE_DISABLED_BY_DEFAULT};
#endif // defined(OS_MACOSX)
#if !defined(OS_ANDROID)
const base::Feature kAnimatedAppMenuIcon{"AnimatedAppMenuIcon",
base::FEATURE_DISABLED_BY_DEFAULT};
const base::Feature kAppBanners {
"AppBanners",
#if defined(OS_CHROMEOS)
base::FEATURE_ENABLED_BY_DEFAULT,
#else
base::FEATURE_DISABLED_BY_DEFAULT,
#endif // defined(OS_CHROMEOS)
};
#endif // !defined(OS_ANDROID)
#if defined(OS_CHROMEOS)
// Whether to handle low memory kill of ARC apps by Chrome.
const base::Feature kArcMemoryManagement{
"ArcMemoryManagement", base::FEATURE_ENABLED_BY_DEFAULT};
#endif // defined(OS_CHROMEOS)
// If enabled, the list of content suggestions on the New Tab page will contain
// assets (e.g. books, pictures, audio) that the user downloaded for later use.
// DO NOT check directly whether this feature is enabled (i.e. do not use
// base::FeatureList::IsEnabled()). It is enabled conditionally. Use
// |AreAssetDownloadsEnabled| instead.
const base::Feature kAssetDownloadSuggestionsFeature{
"NTPAssetDownloadSuggestions", base::FEATURE_ENABLED_BY_DEFAULT};
// Enables the built-in DNS resolver.
const base::Feature kAsyncDns {
"AsyncDns",
#if defined(OS_CHROMEOS) || defined(OS_MACOSX)
base::FEATURE_ENABLED_BY_DEFAULT
#else
base::FEATURE_DISABLED_BY_DEFAULT
#endif
};
#if defined(OS_WIN) || defined(OS_MACOSX)
// Enables automatic tab discarding, when the system is in low memory state.
const base::Feature kAutomaticTabDiscarding{"AutomaticTabDiscarding",
base::FEATURE_ENABLED_BY_DEFAULT};
#endif // defined(OS_WIN) || defined(OS_MACOSX)
#if defined(OS_WIN) || defined(OS_LINUX)
// Enables the Restart background mode optimization. When all Chrome UI is
// closed and it goes in the background, allows to restart the browser to
// discard memory.
const base::Feature kBackgroundModeAllowRestart{
"BackgroundModeAllowRestart", base::FEATURE_DISABLED_BY_DEFAULT};
#endif // defined(OS_WIN) || defined(OS_LINUX)
// Enables or disables whether permission prompts are automatically blocked
// after the user has explicitly dismissed them too many times.
const base::Feature kBlockPromptsIfDismissedOften{
"BlockPromptsIfDismissedOften", base::FEATURE_ENABLED_BY_DEFAULT};
// Enables or disables whether permission prompts are automatically blocked
// after the user has ignored them too many times.
const base::Feature kBlockPromptsIfIgnoredOften{
"BlockPromptsIfIgnoredOften", base::FEATURE_DISABLED_BY_DEFAULT};
#if defined(OS_MACOSX)
// Enables the new bookmark app system (e.g. Add To Applications on Mac).
const base::Feature kBookmarkApps{"BookmarkAppsMac",
base::FEATURE_DISABLED_BY_DEFAULT};
#endif
// Fixes for browser hang bugs are deployed in a field trial in order to measure
// their impact. See crbug.com/478209.
const base::Feature kBrowserHangFixesExperiment{
"BrowserHangFixesExperiment", base::FEATURE_DISABLED_BY_DEFAULT};
#if defined(OS_MACOSX)
// Enables or disables the browser's touch bar.
const base::Feature kBrowserTouchBar{"BrowserTouchBar",
base::FEATURE_ENABLED_BY_DEFAULT};
// Enables or disables touch bar support for dialogs.
const base::Feature kDialogTouchBar{"DialogTouchBar",
base::FEATURE_DISABLED_BY_DEFAULT};
// Enables or disables keyboard focus for the tab strip.
const base::Feature kTabStripKeyboardFocus{"TabStripKeyboardFocus",
base::FEATURE_DISABLED_BY_DEFAULT};
#endif // defined(OS_MACOSX)
#if !defined(OS_ANDROID)
// Enables logging UKMs for background tab activity by TabActivityWatcher.
const base::Feature kTabMetricsLogging{"TabMetricsLogging",
base::FEATURE_ENABLED_BY_DEFAULT};
#endif
// Enables Basic/Advanced tabs in ClearBrowsingData.
const base::Feature kTabsInCbd{"TabsInCBD", base::FEATURE_ENABLED_BY_DEFAULT};
// If enabled, we'll only take thumbnails of unknown URLs (i.e. URLs that are
// not (yet) part of TopSites) if they have an interesting transition type, i.e.
// one that qualifies for inclusion in TopSites.
const base::Feature kCaptureThumbnailDependingOnTransitionType{
"CaptureThumbnailDependingOnTransitionType",
base::FEATURE_DISABLED_BY_DEFAULT};
// Whether to capture page thumbnails when navigating away from the current page
// (in addition to any other times this might happen).
const base::Feature kCaptureThumbnailOnNavigatingAway{
"CaptureThumbnailOnNavigatingAway", base::FEATURE_DISABLED_BY_DEFAULT};
// Enables change picture video mode.
const base::Feature kChangePictureVideoMode{"ChangePictureVideoMode",
base::FEATURE_ENABLED_BY_DEFAULT};
// Whether to trigger app banner installability checks on page load.
const base::Feature kCheckInstallabilityForBannerOnLoad{
"CheckInstallabilityForBannerOnLoad", base::FEATURE_DISABLED_BY_DEFAULT};
#if defined(OS_ANDROID)
// Enables clearing of browsing data which is older than given time period.
const base::Feature kClearOldBrowsingData{"ClearOldBrowsingData",
base::FEATURE_DISABLED_BY_DEFAULT};
#endif
const base::Feature kClickToOpenPDFPlaceholder{
"ClickToOpenPDFPlaceholder", base::FEATURE_DISABLED_BY_DEFAULT};
#if defined(OS_MACOSX)
const base::Feature kContentFullscreen{"ContentFullscreen",
base::FEATURE_DISABLED_BY_DEFAULT};
#endif
// Enables a site-wide permission in the UI which controls access to the
// asynchronous Clipboard web API.
const base::Feature kClipboardContentSetting{"ClipboardContentSetting",
base::FEATURE_DISABLED_BY_DEFAULT};
#if defined(OS_ANDROID)
// Experiment to extract structured metadata for app indexing.
const base::Feature kCopylessPaste{"CopylessPaste",
base::FEATURE_ENABLED_BY_DEFAULT};
#endif
#if defined(OS_WIN)
// Enables or disables desktop ios promotion, which shows a promotion to the
// user promoting Chrome for iOS.
const base::Feature kDesktopIOSPromotion{"DesktopIOSPromotion",
base::FEATURE_DISABLED_BY_DEFAULT};
#endif
// Enables or disables windowing related features for desktop PWAs.
const base::Feature kDesktopPWAWindowing{"DesktopPWAWindowing",
base::FEATURE_DISABLED_BY_DEFAULT};
#if !defined(OS_ANDROID)
const base::Feature kDoodlesOnLocalNtp{"DoodlesOnLocalNtp",
base::FEATURE_DISABLED_BY_DEFAULT};
#endif
#if defined(OS_ANDROID)
// Enables downloads as a foreground service for all versions of Android.
const base::Feature kDownloadsForeground{"DownloadsForeground",
base::FEATURE_DISABLED_BY_DEFAULT};
#endif
#if defined(OS_ANDROID)
// Enable changing default downloads storage location on Android.
const base::Feature kDownloadsLocationChange{"DownloadsLocationChange",
base::FEATURE_DISABLED_BY_DEFAULT};
#endif
// Enables Expect CT reporting, which sends reports for opted-in sites
// that don't serve sufficient Certificate Transparency information.
const base::Feature kExpectCTReporting{"ExpectCTReporting",
base::FEATURE_ENABLED_BY_DEFAULT};
// An experimental way of showing app banners, which has modal banners and gives
// developers more control over when to show them.
const base::Feature kExperimentalAppBanners{"ExperimentalAppBanners",
base::FEATURE_DISABLED_BY_DEFAULT};
// An experimental fullscreen prototype that allows pages to map browser and
// system-reserved keyboard shortcuts.
const base::Feature kExperimentalKeyboardLockUI{
"ExperimentalKeyboardLockUI", base::FEATURE_DISABLED_BY_DEFAULT};
#if BUILDFLAG(ENABLE_VR) || defined(OS_ANDROID)
// Controls whether browsing in VR headsets is enabled.
const base::Feature kVrBrowsing {
"VrBrowsing",
#if defined(OS_ANDROID)
base::FEATURE_ENABLED_BY_DEFAULT
#else
base::FEATURE_DISABLED_BY_DEFAULT
#endif
};
#endif // BUILDFLAG(ENABLE_VR) || defined(OS_ANDROID)
#if BUILDFLAG(ENABLE_VR)
// Enables the virtual keyboard for Chrome VR.
const base::Feature kVrBrowserKeyboard{"VrBrowserKeyboard",
base::FEATURE_ENABLED_BY_DEFAULT};
// Controls features related to VR browsing that are under development.
const base::Feature kVrBrowsingExperimentalFeatures{
"VrBrowsingExperimentalFeatures", base::FEATURE_DISABLED_BY_DEFAULT};
// Controls experimental rendering features for VR browsing.
const base::Feature kVrBrowsingExperimentalRendering{
"VrBrowsingExperimentalRendering", base::FEATURE_DISABLED_BY_DEFAULT};
#if BUILDFLAG(ENABLE_OPENVR)
// Controls OpenVR support.
const base::Feature kOpenVR{"OpenVR", base::FEATURE_DISABLED_BY_DEFAULT};
#endif // ENABLE_OPENVR
#endif // BUILDFLAG(ENABLE_VR)
#if defined(OS_WIN)
// Enables using GDI to print text as simply text.
const base::Feature kGdiTextPrinting {"GdiTextPrinting",
base::FEATURE_DISABLED_BY_DEFAULT};
#endif
// Controls whether the GeoLanguage system is enabled. GeoLanguage uses IP-based
// coarse geolocation to provide an estimate (for use by other Chrome features
// such as Translate) of the local/regional language(s) corresponding to the
// device's location. If this feature is disabled, the GeoLanguage provider is
// not initialized at startup, and clients calling it will receive an empty list
// of languages.
const base::Feature kGeoLanguage{"GeoLanguage",
base::FEATURE_DISABLED_BY_DEFAULT};
#if defined(OS_ANDROID)
const base::Feature kGrantNotificationsToDSE{"GrantNotificationsToDSE",
base::FEATURE_ENABLED_BY_DEFAULT};
#endif // defined(OS_ANDROID)
#if defined (OS_CHROMEOS)
// Enables or disables the Happiness Tracking System for the device.
const base::Feature kHappinessTrackingSystem {
"HappinessTrackingSystem", base::FEATURE_DISABLED_BY_DEFAULT};
#endif
const base::Feature kImportantSitesInCbd{"ImportantSitesInCBD",
base::FEATURE_DISABLED_BY_DEFAULT};
// Controls whether the "improved recovery component" is used. The improved
// recovery component is a redesigned Chrome component intended to restore
// a broken Chrome updater in more scenarios than before.
const base::Feature kImprovedRecoveryComponent{
"ImprovedRecoveryComponent", base::FEATURE_DISABLED_BY_DEFAULT};
#if !defined(OS_ANDROID)
// Enables Casting a Presentation API-enabled website to a secondary display.
const base::Feature kLocalScreenCasting{"LocalScreenCasting",
base::FEATURE_DISABLED_BY_DEFAULT};
#endif
// Enables or disables the Location Settings Dialog (LSD). The LSD is an Android
// system-level geolocation permission prompt.
const base::Feature kLsdPermissionPrompt{"LsdPermissionPrompt",
base::FEATURE_ENABLED_BY_DEFAULT};
#if defined(OS_MACOSX)
// Enables RTL layout in macOS top chrome.
const base::Feature kMacRTL{"MacRTL", base::FEATURE_DISABLED_BY_DEFAULT};
// Uses NSFullSizeContentViewWindowMask where available instead of adding our
// own views to the window frame. This is a temporary kill switch, it can be
// removed once we feel okay about leaving it on.
const base::Feature kMacFullSizeContentView{"MacFullSizeContentView",
base::FEATURE_ENABLED_BY_DEFAULT};
// Enables "Share" submenu in File menu.
const base::Feature kMacSystemShareMenu{"MacSystemShareMenu",
base::FEATURE_ENABLED_BY_DEFAULT};
#endif
// Enables or disables the Material Design version of chrome://bookmarks.
const base::Feature kMaterialDesignBookmarks{"MaterialDesignBookmarks",
base::FEATURE_ENABLED_BY_DEFAULT};
#if defined(OS_MACOSX)
// Enables the Material Design download shelf on Mac.
const base::Feature kMacMaterialDesignDownloadShelf{
"MacMDDownloadShelf", base::FEATURE_DISABLED_BY_DEFAULT};
#endif
#if BUILDFLAG(ENABLE_EXTENSIONS)
// Enabled or disabled the Material Design version of chrome://extensions.
const base::Feature kMaterialDesignExtensions{
"MaterialDesignExtensions", base::FEATURE_DISABLED_BY_DEFAULT};
// Sets whether dismissing the new-tab-page override bubble counts as
// acknowledgement.
const base::Feature kAcknowledgeNtpOverrideOnDeactivate{
"AcknowledgeNtpOverrideOnDeactivate", base::FEATURE_DISABLED_BY_DEFAULT};
#endif
// The material redesign of the Incognito NTP.
const base::Feature kMaterialDesignIncognitoNTP{
"MaterialDesignIncognitoNTP",
#if defined(OS_ANDROID)
base::FEATURE_DISABLED_BY_DEFAULT
#else
base::FEATURE_ENABLED_BY_DEFAULT
#endif
};
#if !defined(OS_ANDROID)
// Enables media content bitstream remoting, an optimization that can activate
// during Cast Tab Mirroring.
const base::Feature kMediaRemoting{"MediaRemoting",
base::FEATURE_DISABLED_BY_DEFAULT};
#endif // !defined(OS_ANDROID)
// Enables or disables modal permission prompts.
const base::Feature kModalPermissionPrompts{"ModalPermissionPrompts",
base::FEATURE_ENABLED_BY_DEFAULT};
#if defined(OS_WIN)
// Enables or disables the ModuleDatabase backend for the conflicts UI.
const base::Feature kModuleDatabase{"ModuleDatabase",
base::FEATURE_DISABLED_BY_DEFAULT};
#endif
#if defined(OS_CHROMEOS)
// Enables or disables multidevice features and corresponding UI on Chrome OS.
const base::Feature kMultidevice{"Multidevice",
base::FEATURE_DISABLED_BY_DEFAULT};
#endif
// Enables the use of native notification centers instead of using the Message
// Center for displaying the toasts.
#if BUILDFLAG(ENABLE_NATIVE_NOTIFICATIONS)
#if defined(OS_MACOSX) || defined(OS_ANDROID) || \
(defined(OS_LINUX) && !defined(OS_CHROMEOS))
const base::Feature kNativeNotifications{"NativeNotifications",
base::FEATURE_ENABLED_BY_DEFAULT};
#else
const base::Feature kNativeNotifications{"NativeNotifications",
base::FEATURE_DISABLED_BY_DEFAULT};
#endif
#endif // BUILDFLAG(ENABLE_NATIVE_NOTIFICATIONS)
const base::Feature kNetworkPrediction{"NetworkPrediction",
base::FEATURE_ENABLED_BY_DEFAULT};
#if defined(OS_POSIX)
// Enables NTLMv2, which implicitly disables NTLMv1.
const base::Feature kNtlmV2Enabled{"NtlmV2Enabled",
base::FEATURE_ENABLED_BY_DEFAULT};
#endif
// If enabled, the list of content suggestions on the New Tab page will contain
// pages that the user downloaded for later use.
// DO NOT check directly whether this feature is enabled (i.e. do not use
// base::FeatureList::IsEnabled()). It is enabled conditionally. Use
// |AreOfflinePageDownloadsEnabled| instead.
const base::Feature kOfflinePageDownloadSuggestionsFeature{
"NTPOfflinePageDownloadSuggestions", base::FEATURE_ENABLED_BY_DEFAULT};
#if defined(OS_ANDROID)
// Enables or disabled the OOM intervention.
const base::Feature kOomIntervention{"OomIntervention",
base::FEATURE_DISABLED_BY_DEFAULT};
#endif
#if !defined(OS_ANDROID)
// Enables or disabled the OneGoogleBar on the local NTP.
const base::Feature kOneGoogleBarOnLocalNtp{"OneGoogleBarOnLocalNtp",
base::FEATURE_ENABLED_BY_DEFAULT};
#endif
// Adds the base language code to the Language-Accept headers if at least one
// corresponding language+region code is present in the user preferences.
// For example: "en-US, fr-FR" --> "en-US, en, fr-FR, fr".
const base::Feature kUseNewAcceptLanguageHeader{
"UseNewAcceptLanguageHeader", base::FEATURE_ENABLED_BY_DEFAULT};
// Enables Permissions Blacklisting via Safe Browsing.
const base::Feature kPermissionsBlacklist{
"PermissionsBlacklist", base::FEATURE_DISABLED_BY_DEFAULT};
// Disables PostScript generation when printing to PostScript capable printers
// and instead sends Emf files.
#if defined(OS_WIN)
const base::Feature kDisablePostScriptPrinting{
"DisablePostScriptPrinting", base::FEATURE_DISABLED_BY_DEFAULT};
#endif
// Enables a page for manaing policies at chrome://policy-tool.
#if !defined(OS_ANDROID)
const base::Feature kPolicyTool{"PolicyTool",
base::FEATURE_DISABLED_BY_DEFAULT};
#endif
#if BUILDFLAG(ENABLE_PLUGINS)
// Prefer HTML content by hiding Flash from the list of plugins.
// https://crbug.com/626728
const base::Feature kPreferHtmlOverPlugins{"PreferHtmlOverPlugins",
base::FEATURE_ENABLED_BY_DEFAULT};
#endif
#if defined(OS_CHROMEOS)
// The lock screen will be preloaded so it is instantly available when the user
// locks the Chromebook device.
const base::Feature kPreloadLockScreen{"PreloadLockScreen",
base::FEATURE_ENABLED_BY_DEFAULT};
#endif
#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
// Enables the new Print Preview UI.
const base::Feature kNewPrintPreview{"NewPrintPreview",
base::FEATURE_DISABLED_BY_DEFAULT};
#endif
#if BUILDFLAG(ENABLE_PRINT_PREVIEW) && !defined(OS_WIN) && !defined(OS_MACOSX)
// Enables the Print as Image feature in print preview.
const base::Feature kPrintPdfAsImage{"PrintPdfAsImage",
base::FEATURE_ENABLED_BY_DEFAULT};
#endif
// Enables or disables push subscriptions keeping Chrome running in the
// background when closed.
const base::Feature kPushMessagingBackgroundMode{
"PushMessagingBackgroundMode", base::FEATURE_DISABLED_BY_DEFAULT};
#if !defined(OS_ANDROID)
const base::Feature kRemoveUsageOfDeprecatedGaiaSigninEndpoint{
"RemoveUsageOfDeprecatedGaiaSigninEndpoint",
base::FEATURE_ENABLED_BY_DEFAULT};
#endif
#if defined(OS_CHROMEOS)
// Runtime flag that indicates whether this leak detector should be enabled in
// the current instance of Chrome.
const base::Feature kRuntimeMemoryLeakDetector{
"RuntimeMemoryLeakDetector", base::FEATURE_DISABLED_BY_DEFAULT};
#endif // defined(OS_CHROMEOS)
const base::Feature kSafeSearchUrlReporting{"SafeSearchUrlReporting",
base::FEATURE_DISABLED_BY_DEFAULT};
// Controls whether the user is prompted when sites request attestation.
const base::Feature kSecurityKeyAttestationPrompt{
"SecurityKeyAttestationPrompt", base::FEATURE_DISABLED_BY_DEFAULT};
#if defined(OS_MACOSX)
// Whether to show all dialogs with toolkit-views on Mac, rather than Cocoa. A
// subset of "pilot" dialogs can be enabled with kSecondaryUiMd.
const base::Feature kShowAllDialogsWithViewsToolkit{
"ShowAllDialogsWithViewsToolkit", base::FEATURE_ENABLED_BY_DEFAULT};
#endif // defined(OS_MACOSX)
#if defined(OS_ANDROID)
// Enables separate notification channels in Android O for notifications from
// different origins, instead of sending them all to a single 'Sites' channel.
const base::Feature kSiteNotificationChannels{"SiteNotificationChannels",
base::FEATURE_ENABLED_BY_DEFAULT};
#endif // defined(OS_ANDROID)
// A new user experience for transitioning into fullscreen and mouse pointer
// lock states.
const base::Feature kSimplifiedFullscreenUI{"ViewsSimplifiedFullscreenUI",
base::FEATURE_ENABLED_BY_DEFAULT};
#if defined(OS_CHROMEOS)
// Enables or disables the ability to add a Samba Share to the Files app
const base::Feature kNativeSmb{"NativeSmb", base::FEATURE_DISABLED_BY_DEFAULT};
#endif // defined(OS_CHROMEOS)
// Enables or disables the ability to use the sound content setting to mute a
// website.
const base::Feature kSoundContentSetting{"SoundContentSetting",
base::FEATURE_ENABLED_BY_DEFAULT};
// Enables or disables the creation of (legacy) supervised users. Does not
// affect existing supervised users.
const base::Feature kSupervisedUserCreation{"SupervisedUserCreation",
base::FEATURE_ENABLED_BY_DEFAULT};
#if defined(OS_CHROMEOS)
// Enables or disables chrome://sys-internals.
const base::Feature kSysInternals{"SysInternals",
base::FEATURE_DISABLED_BY_DEFAULT};
#endif
#if defined(SYZYASAN)
// Enable the deferred free mechanism in the syzyasan module, which helps the
// performance by deferring some work on the critical path to a background
// thread.
const base::Feature kSyzyasanDeferredFree{"SyzyasanDeferredFree",
base::FEATURE_ENABLED_BY_DEFAULT};
#endif
// Enable TopSites to source and sort its site data using site engagement.
const base::Feature kTopSitesFromSiteEngagement{
"TopSitesFromSiteEngagement", base::FEATURE_DISABLED_BY_DEFAULT};
// Enables using the local NTP if Google is the default search engine.
const base::Feature kUseGoogleLocalNtp{"UseGoogleLocalNtp",
base::FEATURE_DISABLED_BY_DEFAULT};
#if defined(OS_CHROMEOS)
// Enables or disables user activity event logging for power management on
// Chrome OS.
const base::Feature kUserActivityEventLogging{"UserActivityEventLogging",
base::FEATURE_ENABLED_BY_DEFAULT};
#endif
#if !defined(OS_ANDROID)
// Enables or disables Voice Search on the local NTP.
const base::Feature kVoiceSearchOnLocalNtp{"VoiceSearchOnLocalNtp",
base::FEATURE_ENABLED_BY_DEFAULT};
#endif
#if defined(OS_WIN)
// Enables the accelerated default browser flow for Windows 10.
const base::Feature kWin10AcceleratedDefaultBrowserFlow{
"Win10AcceleratedDefaultBrowserFlow", base::FEATURE_DISABLED_BY_DEFAULT};
#endif // defined(OS_WIN)
#if defined(OS_CHROMEOS)
// Enables or disables the opt-in IME menu in the language settings page.
const base::Feature kOptInImeMenu{"OptInImeMenu",
base::FEATURE_ENABLED_BY_DEFAULT};
// Enables or disables pin quick unlock.
const base::Feature kQuickUnlockPin{"QuickUnlockPin",
base::FEATURE_ENABLED_BY_DEFAULT};
// Enables pin on the login screen.
const base::Feature kQuickUnlockPinSignin{"QuickUnlockPinSignin",
base::FEATURE_DISABLED_BY_DEFAULT};
// Enables or disables fingerprint quick unlock.
const base::Feature kQuickUnlockFingerprint{"QuickUnlockFingerprint",
base::FEATURE_DISABLED_BY_DEFAULT};
// Enables or disables emoji, handwriting and voice input on opt-in IME menu.
const base::Feature kEHVInputOnImeMenu{"EmojiHandwritingVoiceInput",
base::FEATURE_ENABLED_BY_DEFAULT};
// Enables or disables the bulk printer policies on Chrome OS.
const base::Feature kBulkPrinters{"BulkPrinters",
base::FEATURE_ENABLED_BY_DEFAULT};
// Enables or disables flash component updates on Chrome OS.
const base::Feature kCrosCompUpdates{"CrosCompUpdates",
base::FEATURE_ENABLED_BY_DEFAULT};
// Enables or disables Chrome OS Component updates on Chrome OS.
const base::Feature kCrOSComponent{"CrOSComponent",
base::FEATURE_ENABLED_BY_DEFAULT};
// Enables or disables Chrome OS Container utility on Chrome OS.
const base::Feature kCrOSContainer{"CrOSContainer",
base::FEATURE_DISABLED_BY_DEFAULT};
// Enables or disables Instant Tethering on Chrome OS.
const base::Feature kInstantTethering{"InstantTethering",
base::FEATURE_DISABLED_BY_DEFAULT};
// Enables or disables EasyUnlock promotions on Chrome OS.
const base::Feature kEasyUnlockPromotions{"EasyUnlockPromotions",
base::FEATURE_DISABLED_BY_DEFAULT};
// Enables or disables TPM firmware update capability on Chrome OS.
const base::Feature kTPMFirmwareUpdate{"TPMFirmwareUpdate",
base::FEATURE_DISABLED_BY_DEFAULT};
#endif // defined(OS_CHROMEOS)
} // namespace features