chromeos/constants/chromeos_features.cc - chromium/src - Git at Google

 // Copyright 2018 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 "chromeos/constants/chromeos_features.h"

 namespace chromeos {
 namespace features {
 namespace {

 // Controls whether Instant Tethering supports hosts which use the background
 // advertisement model.
 const base::Feature kInstantTetheringBackgroundAdvertisementSupport{
     "InstantTetheringBackgroundAdvertisementSupport",
     base::FEATURE_ENABLED_BY_DEFAULT};

 }  // namespace

 // Controls whether to enable Ambient mode feature.
 const base::Feature kAmbientModeFeature{"ChromeOSAmbientMode",
                                         base::FEATURE_DISABLED_BY_DEFAULT};

 // Controls whether to enable ARC ADB sideloading support.
 const base::Feature kArcAdbSideloadingFeature{
     "ArcAdbSideloading", base::FEATURE_DISABLED_BY_DEFAULT};

 // Controls whether to enable support for ARC ADB sideloading for managed
 // accounts and/or devices.
 const base::Feature kArcManagedAdbSideloadingSupport{
     "ArcManagedAdbSideloadingSupport", base::FEATURE_DISABLED_BY_DEFAULT};

 // Enables or disables auto screen-brightness adjustment when ambient light
 // changes.
 const base::Feature kAutoScreenBrightness{"AutoScreenBrightness",
                                           base::FEATURE_ENABLED_BY_DEFAULT};

 // Controls whether to enable assistive autocorrect.
 const base::Feature kAssistAutoCorrect{"AssistAutoCorrect",
                                        base::FEATURE_DISABLED_BY_DEFAULT};

 // Controls whether to enable assist personal information.
 const base::Feature kAssistPersonalInfo{"AssistPersonalInfo",
                                         base::FEATURE_DISABLED_BY_DEFAULT};

 // Displays the avatar toolbar button and the profile menu.
 // https://crbug.com/1041472
 extern const base::Feature kAvatarToolbarButton{
     "AvatarToolbarButton", base::FEATURE_DISABLED_BY_DEFAULT};

 // Enables or disables more aggressive filtering out of Bluetooth devices with
 // "appearances" that are less likely to be pairable or useful.
 const base::Feature kBluetoothAggressiveAppearanceFilter{
     "BluetoothAggressiveAppearanceFilter", base::FEATURE_ENABLED_BY_DEFAULT};

 // Enables or disables more filtering out of phones from the Bluetooth UI.
 const base::Feature kBluetoothPhoneFilter{"BluetoothPhoneFilter",
                                           base::FEATURE_ENABLED_BY_DEFAULT};

 // Enables or disables using the kernel suspend notifier instead of powerd.
 const base::Feature kBluetoothKernelSuspendNotifier{
     "BluetoothKernelSuspendNotifier", base::FEATURE_DISABLED_BY_DEFAULT};

 // If enabled, browser will notify Chrome OS audio server to register HFP 1.7
 // to BlueZ, which includes wideband speech feature.
 const base::Feature kBluetoothNextHandsfreeProfile{
     "BluetoothNextHandsfreeProfile", base::FEATURE_DISABLED_BY_DEFAULT};

 // Enable or disables running the Camera App as a System Web App.
 const base::Feature kCameraSystemWebApp{"CameraSystemWebApp",
                                         base::FEATURE_DISABLED_BY_DEFAULT};

 // Enables or disables Crostini port forwarding.
 const base::Feature kCrostiniPortForwarding{"CrostiniPortForwarding",
                                             base::FEATURE_DISABLED_BY_DEFAULT};

 // Enables or disables Crostini Disk Resizing.
 const base::Feature kCrostiniDiskResizing{"CrostiniDiskResizing",
                                           base::FEATURE_DISABLED_BY_DEFAULT};

 // Enables or disables Crostini using Buster container images.
 const base::Feature kCrostiniUseBusterImage{"CrostiniUseBusterImage",
                                             base::FEATURE_ENABLED_BY_DEFAULT};

 // Enables or disables Crostini Username picking.
 const base::Feature kCrostiniUsername{"CrostiniUsername",
                                       base::FEATURE_ENABLED_BY_DEFAULT};

 // Enables the option to share the mic with Crostini or not
 const base::Feature kCrostiniShowMicSetting{"CrostiniShowMicSetting",
                                             base::FEATURE_DISABLED_BY_DEFAULT};

 // Enables or disables Crostini GPU support.
 const base::Feature kCrostiniGpuSupport{"CrostiniGpuSupport",
                                         base::FEATURE_DISABLED_BY_DEFAULT};

 // Enables or disables Crostini usb mounting for unsupported devices.
 const base::Feature kCrostiniUsbAllowUnsupported{
     "CrostiniUsbAllowUnsupported", base::FEATURE_DISABLED_BY_DEFAULT};

 // Enables or disables the new WebUI Crostini upgrader.
 const base::Feature kCrostiniWebUIUpgrader{"CrostiniWebUIUpgrader",
                                            base::FEATURE_DISABLED_BY_DEFAULT};

 // Enables or disables using Cryptauth's GetDevicesActivityStatus API.
 const base::Feature kCryptAuthV2DeviceActivityStatus{
     "CryptAuthV2DeviceActivityStatus", base::FEATURE_DISABLED_BY_DEFAULT};

 // Enables or disables the CryptAuth v2 DeviceSync flow. Regardless of this
 // flag, v1 DeviceSync will continue to operate until it is disabled via the
 // feature flag kDisableCryptAuthV1DeviceSync.
 const base::Feature kCryptAuthV2DeviceSync{"CryptAuthV2DeviceSync",
                                            base::FEATURE_DISABLED_BY_DEFAULT};

 // Enables or disables the CryptAuth v2 Enrollment flow.
 const base::Feature kCryptAuthV2Enrollment{"CryptAuthV2Enrollment",
                                            base::FEATURE_DISABLED_BY_DEFAULT};

 // Disables the CryptAuth v1 DeviceSync flow. Note: During the first phase
 // of the v2 DeviceSync rollout, v1 and v2 DeviceSync run in parallel. This flag
 // is needed to disable the v1 service during the second phase of the rollout.
 // kCryptAuthV2DeviceSync should be enabled before this flag is flipped.
 const base::Feature kDisableCryptAuthV1DeviceSync{
     "DisableCryptAuthV1DeviceSync", base::FEATURE_DISABLED_BY_DEFAULT};

 // Disables "Office Editing for Docs, Sheets & Slides" component app so handlers
 // won't be registered, making it possible to install another version for
 // testing.
 const base::Feature kDisableOfficeEditingComponentApp{
     "DisableOfficeEditingComponentApp", base::FEATURE_DISABLED_BY_DEFAULT};

 // Enables or disables Discover Application on Chrome OS.
 // If enabled, Discover App will be shown in launcher.
 const base::Feature kDiscoverApp{"DiscoverApp",
                                  base::FEATURE_DISABLED_BY_DEFAULT};

 // If enabled, DriveFS will be used for Drive sync.
 const base::Feature kDriveFs{"DriveFS", base::FEATURE_ENABLED_BY_DEFAULT};

 // Enables DriveFS' experimental local files mirroring functionality.
 const base::Feature kDriveFsMirroring{"DriveFsMirroring",
                                       base::FEATURE_DISABLED_BY_DEFAULT};

 // If enabled, allows Unicorn users to add secondary EDU accounts.
 const base::Feature kEduCoexistence{"EduCoexistence",
                                     base::FEATURE_DISABLED_BY_DEFAULT};

 // If enabled, emoji suggestion will be shown when user type "space".
 const base::Feature kEmojiSuggestAddition{"EmojiSuggestAddition",
                                           base::FEATURE_DISABLED_BY_DEFAULT};

 // Enables Device End Of Lifetime warning notifications.
 const base::Feature kEolWarningNotifications{"EolWarningNotifications",
                                              base::FEATURE_ENABLED_BY_DEFAULT};

 // Enable or disable pointer lock for Crostini windows.
 const base::Feature kExoPointerLock{"ExoPointerLock",
                                     base::FEATURE_DISABLED_BY_DEFAULT};

 // Enables the next generation file manager.
 const base::Feature kFilesNG{"FilesNG", base::FEATURE_ENABLED_BY_DEFAULT};

 // Enables the use of Mojo by Chrome-process code to communicate with Power
 // Manager. In order to use mojo, this feature must be turned on and a callsite
 // must use PowerManagerMojoClient::Get().
 const base::Feature kMojoDBusRelay{"MojoDBusRelay",
                                    base::FEATURE_DISABLED_BY_DEFAULT};

 // If enabled, will display blocking screens during re-authentication after a
 // supervision transition occurred.
 const base::Feature kEnableSupervisionTransitionScreens{
     "EnableSupervisionTransitionScreens", base::FEATURE_ENABLED_BY_DEFAULT};

 // Enable restriction of symlink traversal on user-supplied filesystems.
 const base::Feature kFsNosymfollow{"FsNosymfollow",
                                    base::FEATURE_DISABLED_BY_DEFAULT};

 // Enable a D-Bus service for accessing gesture properties.
 const base::Feature kGesturePropertiesDBusService{
     "GesturePropertiesDBusService", base::FEATURE_DISABLED_BY_DEFAULT};

 // Enable primary/secondary action buttons on Gaia login screen.
 const base::Feature kGaiaActionButtons{"GaiaActionButtons",
                                        base::FEATURE_DISABLED_BY_DEFAULT};

 // The new ChromeOS Help App. https://crbug.com/1012578.
 const base::Feature kHelpAppV2{"HelpAppV2", base::FEATURE_DISABLED_BY_DEFAULT};

 // Enable or disable Unified Input Logic for HMM decoder in the IME extension
 // on Chrome OS.
 const base::Feature kImeInputLogicHmm{"ImeInputLogicHmm",
                                       base::FEATURE_DISABLED_BY_DEFAULT};

 // Enable or disable Unified Input Logic for FST decoder in the IME extension
 // on Chrome OS.
 const base::Feature kImeInputLogicFst{"ImeInputLogicFst",
                                       base::FEATURE_DISABLED_BY_DEFAULT};

 // Enable or disable Unified Input Logic for Mozc decoder in the IME extension
 // on Chrome OS.
 const base::Feature kImeInputLogicMozc{"ImeInputLogicMozc",
                                        base::FEATURE_DISABLED_BY_DEFAULT};

 // Enable or disable IME service decoder engine and 'ime' sandbox on Chrome OS.
 const base::Feature kImeDecoderWithSandbox{"ImeDecoderWithSandbox",
                                            base::FEATURE_DISABLED_BY_DEFAULT};

 // Enable or disable using the floating virtual keyboard as the default option
 // on Chrome OS.
 const base::Feature kVirtualKeyboardFloatingDefault{
     "VirtualKeyboardFloatingDefault", base::FEATURE_DISABLED_BY_DEFAULT};

 // Enables or disables Instant Tethering on Chrome OS.
 const base::Feature kInstantTethering{"InstantTethering",
                                       base::FEATURE_DISABLED_BY_DEFAULT};

 // ChromeOS Media App. https://crbug.com/996088.
 const base::Feature kMediaApp{"MediaApp", base::FEATURE_DISABLED_BY_DEFAULT};

 // Enable or disable native typing for rule-based input methods.
 const base::Feature kNativeRuleBasedTyping{"NativeRuleBasedTyping",
                                            base::FEATURE_ENABLED_BY_DEFAULT};

 // Controls whether to enable OS Settings fuzzy search, and disable search using
 // exact string matching.
 const base::Feature kNewOsSettingsSearch{"NewOsSettingsSearch",
                                          base::FEATURE_DISABLED_BY_DEFAULT};

 // Controls whether to enable the Parental Controls section of settings.
 const base::Feature kParentalControlsSettings{
     "ChromeOSParentalControlsSettings", base::FEATURE_ENABLED_BY_DEFAULT};

 // Controls whether to show printer statuses.
 const base::Feature kPrinterStatus{"PrinterStatus",
                                    base::FEATURE_DISABLED_BY_DEFAULT};

 // Controls whether to enable the Print Job Management App.
 const base::Feature kPrintJobManagementApp{"PrintJobManagementApp",
                                            base::FEATURE_DISABLED_BY_DEFAULT};

 // Controls whether to enable quick answers.
 const base::Feature kQuickAnswers{"QuickAnswers",
                                   base::FEATURE_DISABLED_BY_DEFAULT};

 // Controls whether to enable quick answers rich ui.
 const base::Feature kQuickAnswersRichUi{"QuickAnswersRichUi",
                                         base::FEATURE_DISABLED_BY_DEFAULT};

 // ChromeOS Files App mounts RAR archives via rar2fs instead of avfs.
 // https://crbug.com/996549
 const base::Feature kRar2Fs{"Rar2Fs", base::FEATURE_ENABLED_BY_DEFAULT};

 // Enables or disables Release Notes on Chrome OS.
 const base::Feature kReleaseNotes{"ReleaseNotes",
                                   base::FEATURE_ENABLED_BY_DEFAULT};

 // Enables or disables Release Notes notifications on Chrome OS.
 const base::Feature kReleaseNotesNotification{"ReleaseNotesNotification",
                                               base::FEATURE_ENABLED_BY_DEFAULT};

 // Enables or disables an experimental scanning UI on Chrome OS.
 const base::Feature kScanningUI{"ScanningUI",
                                 base::FEATURE_DISABLED_BY_DEFAULT};

 // Enables or disables long kill timeout for session manager daemon. When
 // enabled, session manager daemon waits for a longer time (e.g. 12s) for chrome
 // to exit before sending SIGABRT. Otherwise, it uses the default time out
 // (currently 3s).
 const base::Feature kSessionManagerLongKillTimeout{
     "SessionManagerLongKillTimeout", base::FEATURE_DISABLED_BY_DEFAULT};

 // Enables or disables the shelf hotseat.
 const base::Feature kShelfHotseat{"ShelfHotseat",
                                   base::FEATURE_ENABLED_BY_DEFAULT};

 // Enables or disables a toggle to enable Bluetooth debug logs.
 const base::Feature kShowBluetoothDebugLogToggle{
     "ShowBluetoothDebugLogToggle", base::FEATURE_DISABLED_BY_DEFAULT};

 // Enables or disables showing the battery level in the System Tray and Settings
 // UI for supported Bluetooth Devices.
 const base::Feature kShowBluetoothDeviceBattery{
     "ShowBluetoothDeviceBattery", base::FEATURE_DISABLED_BY_DEFAULT};

 // Shows the Play Store icon in Demo Mode.
 const base::Feature kShowPlayInDemoMode{"ShowPlayInDemoMode",
                                         base::FEATURE_DISABLED_BY_DEFAULT};

 // Shows the progress bar during Demo Mode setup.
 const base::Feature kShowProgressBarInDemoModeSetup{
     "ShowProgressBarInDemoModeSetup", base::FEATURE_DISABLED_BY_DEFAULT};

 // Uses experimental component version for smart dim.
 const base::Feature kSmartDimExperimentalComponent{
     "SmartDimExperimentalComponent", base::FEATURE_DISABLED_BY_DEFAULT};

 // Uses the smart dim component updater to provide smart dim model and
 // preprocessor configuration.
 const base::Feature kSmartDimNewMlAgent{"SmartDimNewMlAgent",
                                         base::FEATURE_DISABLED_BY_DEFAULT};

 // Uses the V3 (~2019-05 era) Smart Dim model instead of the default V2
 // (~2018-11) model.
 const base::Feature kSmartDimModelV3{"SmartDimModelV3",
                                      base::FEATURE_DISABLED_BY_DEFAULT};

 // Enables separate sync controls for OS settings (display, keyboard, etc.).
 // For example, the user could choose to sync OS settings but not browser
 // settings.
 const base::Feature kSplitSettingsSync{"SplitSettingsSync",
                                        base::FEATURE_DISABLED_BY_DEFAULT};

 // Introduces a new OOBE dialog for the OS sync feature. Uses the same browser
 // sync consent dialog as Windows/Mac/Linux. Allows the user to fully opt-out of
 // browser sync, including marking the signin primary account as unconsented.
 // Requires SplitSettingsSync.
 // NOTE: Use IsSplitSyncConsentEnabled() to test the flag, see implementation.
 const base::Feature kSplitSyncConsent{"SplitSyncConsent",
                                       base::FEATURE_DISABLED_BY_DEFAULT};

 // Enables unified media view in Files app to browse recently-modified media
 // files from local local, Google Drive, and Android.
 const base::Feature kUnifiedMediaView{"UnifiedMediaView",
                                       base::FEATURE_ENABLED_BY_DEFAULT};

 // Enables the updated cellular activation UI; see go/cros-cellular-design.
 const base::Feature kUpdatedCellularActivationUi{
     "UpdatedCellularActivationUi", base::FEATURE_DISABLED_BY_DEFAULT};

 // Use the staging URL as part of the "Messages" feature under "Connected
 // Devices" settings.
 const base::Feature kUseMessagesStagingUrl{"UseMessagesStagingUrl",
                                            base::FEATURE_DISABLED_BY_DEFAULT};

 // Enables or disables user activity prediction for power management on
 // Chrome OS.
 // Defined here rather than in //chrome alongside other related features so that
 // PowerPolicyController can check it.
 const base::Feature kUserActivityPrediction{"UserActivityPrediction",
                                             base::FEATURE_ENABLED_BY_DEFAULT};

 // Remap search+click to right click instead of the legacy alt+click on
 // Chrome OS.
 const base::Feature kUseSearchClickForRightClick{
     "UseSearchClickForRightClick", base::FEATURE_DISABLED_BY_DEFAULT};

 // Enable or disable native controls in video player on Chrome OS.
 const base::Feature kVideoPlayerNativeControls{
     "VideoPlayerNativeControls", base::FEATURE_ENABLED_BY_DEFAULT};

 // Enable or disable bordered key for virtual keyboard on Chrome OS.
 const base::Feature kVirtualKeyboardBorderedKey{
     "VirtualKeyboardBorderedKey", base::FEATURE_DISABLED_BY_DEFAULT};

 // Enable or disable resizable floating virtual keyboard on Chrome OS.
 const base::Feature kVirtualKeyboardFloatingResizable{
     "VirtualKeyboardFloatingResizable", base::FEATURE_DISABLED_BY_DEFAULT};

 // Enable or disable MOZC IME to use protobuf as interactive message format.
 const base::Feature kImeMozcProto{"ImeMozcProto",
                                   base::FEATURE_DISABLED_BY_DEFAULT};

 ////////////////////////////////////////////////////////////////////////////////

 bool IsAmbientModeEnabled() {
   return base::FeatureList::IsEnabled(kAmbientModeFeature);
 }

 bool IsEduCoexistenceEnabled() {
   return base::FeatureList::IsEnabled(kEduCoexistence);
 }

 bool IsImeDecoderWithSandboxEnabled() {
   return base::FeatureList::IsEnabled(kImeDecoderWithSandbox);
 }

 bool IsInstantTetheringBackgroundAdvertisingSupported() {
   return base::FeatureList::IsEnabled(
       kInstantTetheringBackgroundAdvertisementSupport);
 }

 bool IsParentalControlsSettingsEnabled() {
   return base::FeatureList::IsEnabled(kParentalControlsSettings);
 }

 bool IsQuickAnswersEnabled() {
   return base::FeatureList::IsEnabled(kQuickAnswers);
 }

 bool IsQuickAnswersRichUiEnabled() {
   return base::FeatureList::IsEnabled(kQuickAnswersRichUi);
 }

 bool IsSplitSettingsSyncEnabled() {
   return base::FeatureList::IsEnabled(kSplitSettingsSync);
 }

 bool IsSplitSyncConsentEnabled() {
   // SplitSyncConsent requires SplitSettingsSync.
   return base::FeatureList::IsEnabled(kSplitSettingsSync) &&
          base::FeatureList::IsEnabled(kSplitSyncConsent);
 }

 bool ShouldShowPlayStoreInDemoMode() {
   return base::FeatureList::IsEnabled(kShowPlayInDemoMode);
 }

 bool ShouldUseV1DeviceSync() {
   return !ShouldUseV2DeviceSync() ||
          !base::FeatureList::IsEnabled(
              chromeos::features::kDisableCryptAuthV1DeviceSync);
 }

 bool ShouldUseV2DeviceSync() {
   return base::FeatureList::IsEnabled(
              chromeos::features::kCryptAuthV2Enrollment) &&
          base::FeatureList::IsEnabled(
              chromeos::features::kCryptAuthV2DeviceSync);
 }

 }  // namespace features
 }  // namespace chromeos
	// Copyright 2018 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 "chromeos/constants/chromeos_features.h"

	namespace chromeos {
	namespace features {
	namespace {

	// Controls whether Instant Tethering supports hosts which use the background
	// advertisement model.
	const base::Feature kInstantTetheringBackgroundAdvertisementSupport{
	"InstantTetheringBackgroundAdvertisementSupport",
	base::FEATURE_ENABLED_BY_DEFAULT};

	} // namespace

	// Controls whether to enable Ambient mode feature.
	const base::Feature kAmbientModeFeature{"ChromeOSAmbientMode",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Controls whether to enable ARC ADB sideloading support.
	const base::Feature kArcAdbSideloadingFeature{
	"ArcAdbSideloading", base::FEATURE_DISABLED_BY_DEFAULT};

	// Controls whether to enable support for ARC ADB sideloading for managed
	// accounts and/or devices.
	const base::Feature kArcManagedAdbSideloadingSupport{
	"ArcManagedAdbSideloadingSupport", base::FEATURE_DISABLED_BY_DEFAULT};

	// Enables or disables auto screen-brightness adjustment when ambient light
	// changes.
	const base::Feature kAutoScreenBrightness{"AutoScreenBrightness",
	base::FEATURE_ENABLED_BY_DEFAULT};

	// Controls whether to enable assistive autocorrect.
	const base::Feature kAssistAutoCorrect{"AssistAutoCorrect",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Controls whether to enable assist personal information.
	const base::Feature kAssistPersonalInfo{"AssistPersonalInfo",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Displays the avatar toolbar button and the profile menu.
	// https://crbug.com/1041472
	extern const base::Feature kAvatarToolbarButton{
	"AvatarToolbarButton", base::FEATURE_DISABLED_BY_DEFAULT};

	// Enables or disables more aggressive filtering out of Bluetooth devices with
	// "appearances" that are less likely to be pairable or useful.
	const base::Feature kBluetoothAggressiveAppearanceFilter{
	"BluetoothAggressiveAppearanceFilter", base::FEATURE_ENABLED_BY_DEFAULT};

	// Enables or disables more filtering out of phones from the Bluetooth UI.
	const base::Feature kBluetoothPhoneFilter{"BluetoothPhoneFilter",
	base::FEATURE_ENABLED_BY_DEFAULT};

	// Enables or disables using the kernel suspend notifier instead of powerd.
	const base::Feature kBluetoothKernelSuspendNotifier{
	"BluetoothKernelSuspendNotifier", base::FEATURE_DISABLED_BY_DEFAULT};

	// If enabled, browser will notify Chrome OS audio server to register HFP 1.7
	// to BlueZ, which includes wideband speech feature.
	const base::Feature kBluetoothNextHandsfreeProfile{
	"BluetoothNextHandsfreeProfile", base::FEATURE_DISABLED_BY_DEFAULT};

	// Enable or disables running the Camera App as a System Web App.
	const base::Feature kCameraSystemWebApp{"CameraSystemWebApp",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Enables or disables Crostini port forwarding.
	const base::Feature kCrostiniPortForwarding{"CrostiniPortForwarding",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Enables or disables Crostini Disk Resizing.
	const base::Feature kCrostiniDiskResizing{"CrostiniDiskResizing",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Enables or disables Crostini using Buster container images.
	const base::Feature kCrostiniUseBusterImage{"CrostiniUseBusterImage",
	base::FEATURE_ENABLED_BY_DEFAULT};

	// Enables or disables Crostini Username picking.
	const base::Feature kCrostiniUsername{"CrostiniUsername",
	base::FEATURE_ENABLED_BY_DEFAULT};

	// Enables the option to share the mic with Crostini or not
	const base::Feature kCrostiniShowMicSetting{"CrostiniShowMicSetting",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Enables or disables Crostini GPU support.
	const base::Feature kCrostiniGpuSupport{"CrostiniGpuSupport",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Enables or disables Crostini usb mounting for unsupported devices.
	const base::Feature kCrostiniUsbAllowUnsupported{
	"CrostiniUsbAllowUnsupported", base::FEATURE_DISABLED_BY_DEFAULT};

	// Enables or disables the new WebUI Crostini upgrader.
	const base::Feature kCrostiniWebUIUpgrader{"CrostiniWebUIUpgrader",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Enables or disables using Cryptauth's GetDevicesActivityStatus API.
	const base::Feature kCryptAuthV2DeviceActivityStatus{
	"CryptAuthV2DeviceActivityStatus", base::FEATURE_DISABLED_BY_DEFAULT};

	// Enables or disables the CryptAuth v2 DeviceSync flow. Regardless of this
	// flag, v1 DeviceSync will continue to operate until it is disabled via the
	// feature flag kDisableCryptAuthV1DeviceSync.
	const base::Feature kCryptAuthV2DeviceSync{"CryptAuthV2DeviceSync",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Enables or disables the CryptAuth v2 Enrollment flow.
	const base::Feature kCryptAuthV2Enrollment{"CryptAuthV2Enrollment",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Disables the CryptAuth v1 DeviceSync flow. Note: During the first phase
	// of the v2 DeviceSync rollout, v1 and v2 DeviceSync run in parallel. This flag
	// is needed to disable the v1 service during the second phase of the rollout.
	// kCryptAuthV2DeviceSync should be enabled before this flag is flipped.
	const base::Feature kDisableCryptAuthV1DeviceSync{
	"DisableCryptAuthV1DeviceSync", base::FEATURE_DISABLED_BY_DEFAULT};

	// Disables "Office Editing for Docs, Sheets & Slides" component app so handlers
	// won't be registered, making it possible to install another version for
	// testing.
	const base::Feature kDisableOfficeEditingComponentApp{
	"DisableOfficeEditingComponentApp", base::FEATURE_DISABLED_BY_DEFAULT};

	// Enables or disables Discover Application on Chrome OS.
	// If enabled, Discover App will be shown in launcher.
	const base::Feature kDiscoverApp{"DiscoverApp",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// If enabled, DriveFS will be used for Drive sync.
	const base::Feature kDriveFs{"DriveFS", base::FEATURE_ENABLED_BY_DEFAULT};

	// Enables DriveFS' experimental local files mirroring functionality.
	const base::Feature kDriveFsMirroring{"DriveFsMirroring",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// If enabled, allows Unicorn users to add secondary EDU accounts.
	const base::Feature kEduCoexistence{"EduCoexistence",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// If enabled, emoji suggestion will be shown when user type "space".
	const base::Feature kEmojiSuggestAddition{"EmojiSuggestAddition",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Enables Device End Of Lifetime warning notifications.
	const base::Feature kEolWarningNotifications{"EolWarningNotifications",
	base::FEATURE_ENABLED_BY_DEFAULT};

	// Enable or disable pointer lock for Crostini windows.
	const base::Feature kExoPointerLock{"ExoPointerLock",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Enables the next generation file manager.
	const base::Feature kFilesNG{"FilesNG", base::FEATURE_ENABLED_BY_DEFAULT};

	// Enables the use of Mojo by Chrome-process code to communicate with Power
	// Manager. In order to use mojo, this feature must be turned on and a callsite
	// must use PowerManagerMojoClient::Get().
	const base::Feature kMojoDBusRelay{"MojoDBusRelay",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// If enabled, will display blocking screens during re-authentication after a
	// supervision transition occurred.
	const base::Feature kEnableSupervisionTransitionScreens{
	"EnableSupervisionTransitionScreens", base::FEATURE_ENABLED_BY_DEFAULT};

	// Enable restriction of symlink traversal on user-supplied filesystems.
	const base::Feature kFsNosymfollow{"FsNosymfollow",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Enable a D-Bus service for accessing gesture properties.
	const base::Feature kGesturePropertiesDBusService{
	"GesturePropertiesDBusService", base::FEATURE_DISABLED_BY_DEFAULT};

	// Enable primary/secondary action buttons on Gaia login screen.
	const base::Feature kGaiaActionButtons{"GaiaActionButtons",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// The new ChromeOS Help App. https://crbug.com/1012578.
	const base::Feature kHelpAppV2{"HelpAppV2", base::FEATURE_DISABLED_BY_DEFAULT};

	// Enable or disable Unified Input Logic for HMM decoder in the IME extension
	// on Chrome OS.
	const base::Feature kImeInputLogicHmm{"ImeInputLogicHmm",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Enable or disable Unified Input Logic for FST decoder in the IME extension
	// on Chrome OS.
	const base::Feature kImeInputLogicFst{"ImeInputLogicFst",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Enable or disable Unified Input Logic for Mozc decoder in the IME extension
	// on Chrome OS.
	const base::Feature kImeInputLogicMozc{"ImeInputLogicMozc",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Enable or disable IME service decoder engine and 'ime' sandbox on Chrome OS.
	const base::Feature kImeDecoderWithSandbox{"ImeDecoderWithSandbox",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Enable or disable using the floating virtual keyboard as the default option
	// on Chrome OS.
	const base::Feature kVirtualKeyboardFloatingDefault{
	"VirtualKeyboardFloatingDefault", base::FEATURE_DISABLED_BY_DEFAULT};

	// Enables or disables Instant Tethering on Chrome OS.
	const base::Feature kInstantTethering{"InstantTethering",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// ChromeOS Media App. https://crbug.com/996088.
	const base::Feature kMediaApp{"MediaApp", base::FEATURE_DISABLED_BY_DEFAULT};

	// Enable or disable native typing for rule-based input methods.
	const base::Feature kNativeRuleBasedTyping{"NativeRuleBasedTyping",
	base::FEATURE_ENABLED_BY_DEFAULT};

	// Controls whether to enable OS Settings fuzzy search, and disable search using
	// exact string matching.
	const base::Feature kNewOsSettingsSearch{"NewOsSettingsSearch",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Controls whether to enable the Parental Controls section of settings.
	const base::Feature kParentalControlsSettings{
	"ChromeOSParentalControlsSettings", base::FEATURE_ENABLED_BY_DEFAULT};

	// Controls whether to show printer statuses.
	const base::Feature kPrinterStatus{"PrinterStatus",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Controls whether to enable the Print Job Management App.
	const base::Feature kPrintJobManagementApp{"PrintJobManagementApp",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Controls whether to enable quick answers.
	const base::Feature kQuickAnswers{"QuickAnswers",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Controls whether to enable quick answers rich ui.
	const base::Feature kQuickAnswersRichUi{"QuickAnswersRichUi",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// ChromeOS Files App mounts RAR archives via rar2fs instead of avfs.
	// https://crbug.com/996549
	const base::Feature kRar2Fs{"Rar2Fs", base::FEATURE_ENABLED_BY_DEFAULT};

	// Enables or disables Release Notes on Chrome OS.
	const base::Feature kReleaseNotes{"ReleaseNotes",
	base::FEATURE_ENABLED_BY_DEFAULT};

	// Enables or disables Release Notes notifications on Chrome OS.
	const base::Feature kReleaseNotesNotification{"ReleaseNotesNotification",
	base::FEATURE_ENABLED_BY_DEFAULT};

	// Enables or disables an experimental scanning UI on Chrome OS.
	const base::Feature kScanningUI{"ScanningUI",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Enables or disables long kill timeout for session manager daemon. When
	// enabled, session manager daemon waits for a longer time (e.g. 12s) for chrome
	// to exit before sending SIGABRT. Otherwise, it uses the default time out
	// (currently 3s).
	const base::Feature kSessionManagerLongKillTimeout{
	"SessionManagerLongKillTimeout", base::FEATURE_DISABLED_BY_DEFAULT};

	// Enables or disables the shelf hotseat.
	const base::Feature kShelfHotseat{"ShelfHotseat",
	base::FEATURE_ENABLED_BY_DEFAULT};

	// Enables or disables a toggle to enable Bluetooth debug logs.
	const base::Feature kShowBluetoothDebugLogToggle{
	"ShowBluetoothDebugLogToggle", base::FEATURE_DISABLED_BY_DEFAULT};

	// Enables or disables showing the battery level in the System Tray and Settings
	// UI for supported Bluetooth Devices.
	const base::Feature kShowBluetoothDeviceBattery{
	"ShowBluetoothDeviceBattery", base::FEATURE_DISABLED_BY_DEFAULT};

	// Shows the Play Store icon in Demo Mode.
	const base::Feature kShowPlayInDemoMode{"ShowPlayInDemoMode",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Shows the progress bar during Demo Mode setup.
	const base::Feature kShowProgressBarInDemoModeSetup{
	"ShowProgressBarInDemoModeSetup", base::FEATURE_DISABLED_BY_DEFAULT};

	// Uses experimental component version for smart dim.
	const base::Feature kSmartDimExperimentalComponent{
	"SmartDimExperimentalComponent", base::FEATURE_DISABLED_BY_DEFAULT};

	// Uses the smart dim component updater to provide smart dim model and
	// preprocessor configuration.
	const base::Feature kSmartDimNewMlAgent{"SmartDimNewMlAgent",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Uses the V3 (~2019-05 era) Smart Dim model instead of the default V2
	// (~2018-11) model.
	const base::Feature kSmartDimModelV3{"SmartDimModelV3",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Enables separate sync controls for OS settings (display, keyboard, etc.).
	// For example, the user could choose to sync OS settings but not browser
	// settings.
	const base::Feature kSplitSettingsSync{"SplitSettingsSync",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Introduces a new OOBE dialog for the OS sync feature. Uses the same browser
	// sync consent dialog as Windows/Mac/Linux. Allows the user to fully opt-out of
	// browser sync, including marking the signin primary account as unconsented.
	// Requires SplitSettingsSync.
	// NOTE: Use IsSplitSyncConsentEnabled() to test the flag, see implementation.
	const base::Feature kSplitSyncConsent{"SplitSyncConsent",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Enables unified media view in Files app to browse recently-modified media
	// files from local local, Google Drive, and Android.
	const base::Feature kUnifiedMediaView{"UnifiedMediaView",
	base::FEATURE_ENABLED_BY_DEFAULT};

	// Enables the updated cellular activation UI; see go/cros-cellular-design.
	const base::Feature kUpdatedCellularActivationUi{
	"UpdatedCellularActivationUi", base::FEATURE_DISABLED_BY_DEFAULT};

	// Use the staging URL as part of the "Messages" feature under "Connected
	// Devices" settings.
	const base::Feature kUseMessagesStagingUrl{"UseMessagesStagingUrl",
	base::FEATURE_DISABLED_BY_DEFAULT};

	// Enables or disables user activity prediction for power management on
	// Chrome OS.
	// Defined here rather than in //chrome alongside other related features so that
	// PowerPolicyController can check it.
	const base::Feature kUserActivityPrediction{"UserActivityPrediction",
	base::FEATURE_ENABLED_BY_DEFAULT};

	// Remap search+click to right click instead of the legacy alt+click on
	// Chrome OS.
	const base::Feature kUseSearchClickForRightClick{
	"UseSearchClickForRightClick", base::FEATURE_DISABLED_BY_DEFAULT};

	// Enable or disable native controls in video player on Chrome OS.
	const base::Feature kVideoPlayerNativeControls{
	"VideoPlayerNativeControls", base::FEATURE_ENABLED_BY_DEFAULT};

	// Enable or disable bordered key for virtual keyboard on Chrome OS.
	const base::Feature kVirtualKeyboardBorderedKey{
	"VirtualKeyboardBorderedKey", base::FEATURE_DISABLED_BY_DEFAULT};

	// Enable or disable resizable floating virtual keyboard on Chrome OS.
	const base::Feature kVirtualKeyboardFloatingResizable{
	"VirtualKeyboardFloatingResizable", base::FEATURE_DISABLED_BY_DEFAULT};

	// Enable or disable MOZC IME to use protobuf as interactive message format.
	const base::Feature kImeMozcProto{"ImeMozcProto",
	base::FEATURE_DISABLED_BY_DEFAULT};

	////////////////////////////////////////////////////////////////////////////////

	bool IsAmbientModeEnabled() {
	return base::FeatureList::IsEnabled(kAmbientModeFeature);
	}

	bool IsEduCoexistenceEnabled() {
	return base::FeatureList::IsEnabled(kEduCoexistence);
	}

	bool IsImeDecoderWithSandboxEnabled() {
	return base::FeatureList::IsEnabled(kImeDecoderWithSandbox);
	}

	bool IsInstantTetheringBackgroundAdvertisingSupported() {
	return base::FeatureList::IsEnabled(
	kInstantTetheringBackgroundAdvertisementSupport);
	}

	bool IsParentalControlsSettingsEnabled() {
	return base::FeatureList::IsEnabled(kParentalControlsSettings);
	}

	bool IsQuickAnswersEnabled() {
	return base::FeatureList::IsEnabled(kQuickAnswers);
	}

	bool IsQuickAnswersRichUiEnabled() {
	return base::FeatureList::IsEnabled(kQuickAnswersRichUi);
	}

	bool IsSplitSettingsSyncEnabled() {
	return base::FeatureList::IsEnabled(kSplitSettingsSync);
	}

	bool IsSplitSyncConsentEnabled() {
	// SplitSyncConsent requires SplitSettingsSync.
	return base::FeatureList::IsEnabled(kSplitSettingsSync) &&
	base::FeatureList::IsEnabled(kSplitSyncConsent);
	}

	bool ShouldShowPlayStoreInDemoMode() {
	return base::FeatureList::IsEnabled(kShowPlayInDemoMode);
	}

	bool ShouldUseV1DeviceSync() {
	return !ShouldUseV2DeviceSync() \|\|
	!base::FeatureList::IsEnabled(
	chromeos::features::kDisableCryptAuthV1DeviceSync);
	}

	bool ShouldUseV2DeviceSync() {
	return base::FeatureList::IsEnabled(
	chromeos::features::kCryptAuthV2Enrollment) &&
	base::FeatureList::IsEnabled(
	chromeos::features::kCryptAuthV2DeviceSync);
	}

	} // namespace features
	} // namespace chromeos