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about_flags.cc
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// Copyright (c) 2012 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/browser/about_flags.h"
#include <iterator>
#include <map>
#include <memory>
#include <set>
#include <utility>
#include "ash/constants/ash_features.h"
#include "ash/public/cpp/app_list/app_list_features.h"
#include "ash/public/cpp/app_list/app_list_switches.h"
#include "ash/public/cpp/keyboard/keyboard_switches.h"
#include "base/base_switches.h"
#include "base/bind.h"
#include "base/callback.h"
#include "base/command_line.h"
#include "base/cxx17_backports.h"
#include "base/feature_list.h"
#include "base/i18n/base_i18n_switches.h"
#include "base/memory/singleton.h"
#include "base/metrics/histogram_functions.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"
#include "build/branding_buildflags.h"
#include "build/build_config.h"
#include "cc/base/features.h"
#include "cc/base/switches.h"
#include "chrome/browser/browser_features.h"
#include "chrome/browser/chromeos/android_sms/android_sms_switches.h"
#include "chrome/browser/commerce/commerce_feature_list.h"
#include "chrome/browser/flag_descriptions.h"
#include "chrome/browser/lite_video/lite_video_switches.h"
#include "chrome/browser/login_detection/login_detection_util.h"
#include "chrome/browser/navigation_predictor/navigation_predictor_features.h"
#include "chrome/browser/navigation_predictor/search_engine_preconnector.h"
#include "chrome/browser/net/stub_resolver_config_reader.h"
#include "chrome/browser/net/system_network_context_manager.h"
#include "chrome/browser/notifications/scheduler/public/features.h"
#include "chrome/browser/performance_hints/performance_hints_features.h"
#include "chrome/browser/performance_manager/policies/policy_features.h"
#include "chrome/browser/permissions/abusive_origin_notifications_permission_revocation_config.h"
#include "chrome/browser/permissions/quiet_notification_permission_ui_config.h"
#include "chrome/browser/predictors/loading_predictor_config.h"
#include "chrome/browser/prefetch/prefetch_proxy/prefetch_proxy_features.h"
#include "chrome/browser/prefetch/prefetch_proxy/prefetch_proxy_params.h"
#include "chrome/browser/prefetch/search_prefetch/field_trial_settings.h"
#include "chrome/browser/resource_coordinator/tab_manager_features.h"
#include "chrome/browser/sharing/features.h"
#include "chrome/browser/sharing/shared_clipboard/feature_flags.h"
#include "chrome/browser/sharing/sms/sms_flags.h"
#include "chrome/browser/sharing_hub/sharing_hub_features.h"
#include "chrome/browser/signin/signin_features.h"
#include "chrome/browser/site_isolation/about_flags.h"
#include "chrome/browser/ui/ui_features.h"
#include "chrome/browser/unexpire_flags.h"
#include "chrome/browser/unexpire_flags_gen.h"
#include "chrome/browser/video_tutorials/switches.h"
#include "chrome/common/buildflags.h"
#include "chrome/common/channel_info.h"
#include "chrome/common/chrome_content_client.h"
#include "chrome/common/chrome_features.h"
#include "chrome/common/chrome_switches.h"
#include "components/assist_ranker/predictor_config_definitions.h"
#include "components/autofill/core/browser/autofill_experiments.h"
#include "components/autofill/core/common/autofill_features.h"
#include "components/autofill/core/common/autofill_payments_features.h"
#include "components/autofill/core/common/autofill_switches.h"
#include "components/autofill/core/common/autofill_util.h"
#include "components/autofill_assistant/browser/features.h"
#include "components/browser_sync/browser_sync_switches.h"
#include "components/browsing_data/core/features.h"
#include "components/cloud_devices/common/cloud_devices_switches.h"
#include "components/contextual_search/core/browser/public.h"
#include "components/data_reduction_proxy/core/common/data_reduction_proxy_features.h"
#include "components/data_reduction_proxy/core/common/data_reduction_proxy_switches.h"
#include "components/dom_distiller/core/dom_distiller_features.h"
#include "components/dom_distiller/core/dom_distiller_switches.h"
#include "components/download/public/common/download_features.h"
#include "components/error_page/common/error_page_switches.h"
#include "components/feature_engagement/public/feature_constants.h"
#include "components/feature_engagement/public/feature_list.h"
#include "components/feed/feed_feature_list.h"
#include "components/flags_ui/feature_entry.h"
#include "components/flags_ui/feature_entry_macros.h"
#include "components/flags_ui/flags_state.h"
#include "components/flags_ui/flags_storage.h"
#include "components/flags_ui/flags_ui_metrics.h"
#include "components/flags_ui/flags_ui_switches.h"
#include "components/heavy_ad_intervention/heavy_ad_features.h"
#include "components/history_clusters/core/memories_features.h"
#include "components/invalidation/impl/invalidation_switches.h"
#include "components/language/core/common/language_experiments.h"
#include "components/lookalikes/core/features.h"
#include "components/messages/android/messages_feature.h"
#include "components/nacl/common/buildflags.h"
#include "components/nacl/common/nacl_switches.h"
#include "components/network_session_configurator/common/network_features.h"
#include "components/network_session_configurator/common/network_switches.h"
#include "components/no_state_prefetch/browser/no_state_prefetch_field_trial.h"
#include "components/ntp_tiles/features.h"
#include "components/offline_pages/core/offline_page_feature.h"
#include "components/omnibox/browser/omnibox_field_trial.h"
#include "components/omnibox/common/omnibox_features.h"
#include "components/optimization_guide/core/optimization_guide_features.h"
#include "components/page_info/features.h"
#include "components/paint_preview/buildflags/buildflags.h"
#include "components/paint_preview/features/features.h"
#include "components/password_manager/core/common/password_manager_features.h"
#include "components/payments/core/features.h"
#include "components/permissions/features.h"
#include "components/policy/core/common/features.h"
#include "components/query_tiles/switches.h"
#include "components/reading_list/features/reading_list_switches.h"
#include "components/safe_browsing/core/features.h"
#include "components/search/ntp_features.h"
#include "components/security_interstitials/content/stateful_ssl_host_state_delegate.h"
#include "components/security_interstitials/core/features.h"
#include "components/security_state/core/features.h"
#include "components/security_state/core/security_state.h"
#include "components/send_tab_to_self/features.h"
#include "components/services/heap_profiling/public/cpp/switches.h"
#include "components/shared_highlighting/core/common/shared_highlighting_features.h"
#include "components/signin/core/browser/dice_account_reconcilor_delegate.h"
#include "components/signin/public/base/signin_buildflags.h"
#include "components/signin/public/base/signin_switches.h"
#include "components/site_isolation/features.h"
#include "components/spellcheck/common/spellcheck_features.h"
#include "components/spellcheck/spellcheck_buildflags.h"
#include "components/sync/base/sync_base_switches.h"
#include "components/sync/driver/sync_driver_switches.h"
#include "components/tracing/common/tracing_switches.h"
#include "components/translate/core/browser/translate_manager.h"
#include "components/translate/core/browser/translate_prefs.h"
#include "components/translate/core/browser/translate_ranker_impl.h"
#include "components/translate/core/common/translate_util.h"
#include "components/ui_devtools/switches.h"
#include "components/version_info/version_info.h"
#include "components/viz/common/features.h"
#include "components/viz/common/switches.h"
#include "components/webapps/common/switches.h"
#include "content/public/common/content_features.h"
#include "content/public/common/content_switches.h"
#include "device/base/features.h"
#include "device/fido/features.h"
#include "device/gamepad/public/cpp/gamepad_features.h"
#include "device/vr/buildflags/buildflags.h"
#include "extensions/buildflags/buildflags.h"
#include "gpu/config/gpu_finch_features.h"
#include "gpu/config/gpu_switches.h"
#include "media/audio/audio_features.h"
#include "media/base/media_switches.h"
#include "media/capture/capture_switches.h"
#include "media/media_buildflags.h"
#include "media/midi/midi_switches.h"
#include "media/webrtc/webrtc_switches.h"
#include "mojo/core/embedder/features.h"
#include "net/base/features.h"
#include "net/net_buildflags.h"
#include "net/nqe/effective_connection_type.h"
#include "net/nqe/network_quality_estimator_params.h"
#include "net/websockets/websocket_basic_handshake_stream.h"
#include "pdf/buildflags.h"
#include "ppapi/buildflags/buildflags.h"
#include "printing/buildflags/buildflags.h"
#include "sandbox/policy/features.h"
#include "sandbox/policy/switches.h"
#include "services/device/public/cpp/device_features.h"
#include "services/device/public/cpp/serial/serial_switches.h"
#include "services/media_session/public/cpp/features.h"
#include "services/network/public/cpp/features.h"
#include "services/network/public/cpp/network_switches.h"
#include "storage/browser/quota/quota_features.h"
#include "third_party/blink/public/common/features.h"
#include "third_party/blink/public/common/forcedark/forcedark_switches.h"
#include "third_party/blink/public/common/switches.h"
#include "ui/accessibility/accessibility_features.h"
#include "ui/accessibility/accessibility_switches.h"
#include "ui/base/ui_base_features.h"
#include "ui/base/ui_base_switches.h"
#include "ui/compositor/compositor_switches.h"
#include "ui/display/display_features.h"
#include "ui/display/display_switches.h"
#include "ui/events/blink/blink_features.h"
#include "ui/events/event_switches.h"
#include "ui/gfx/switches.h"
#include "ui/gl/buildflags.h"
#include "ui/gl/gl_features.h"
#include "ui/gl/gl_switches.h"
#include "ui/native_theme/native_theme_features.h"
#if defined(OS_LINUX) || defined(OS_CHROMEOS)
#include "base/allocator/buildflags.h"
#endif
#if defined(OS_ANDROID)
#include "chrome/browser/android/explore_sites/explore_sites_feature.h"
#include "chrome/browser/flags/android/chrome_feature_list.h"
#include "chrome/browser/notifications/chime/android/features.h"
#include "chrome/browser/webapps/android/features.h"
#include "components/browser_ui/photo_picker/android/features.h"
#include "components/browser_ui/site_settings/android/features.h"
#include "components/content_creation/notes/core/note_features.h"
#include "components/external_intents/android/external_intents_features.h"
#else // OS_ANDROID
#include "chrome/browser/media/router/media_router_feature.h"
#include "chrome/browser/web_applications/components/preinstalled_app_install_features.h"
#endif // OS_ANDROID
#if BUILDFLAG(IS_CHROMEOS_ASH)
#include "ash/constants/ash_features.h"
#include "ash/constants/ash_switches.h"
#include "chrome/browser/ash/crosapi/browser_util.h"
#include "chrome/browser/nearby_sharing/common/nearby_share_features.h"
#include "chromeos/services/assistant/public/cpp/features.h"
#include "components/arc/arc_features.h"
#include "components/arc/arc_util.h"
#include "components/full_restore/features.h"
#include "components/metrics/structured/structured_metrics_features.h"
#include "media/capture/video/chromeos/video_capture_features_chromeos.h"
#include "third_party/cros_system_api/switches/chrome_switches.h"
#include "ui/events/ozone/features.h"
#endif // BUILDFLAG(IS_CHROMEOS_ASH)
#if defined(OS_MAC)
#include "chrome/browser/ui/browser_dialogs.h"
#include "chrome/browser/ui/cocoa/screentime/screentime_features.h"
#endif // OS_MAC
#if BUILDFLAG(ENABLE_EXTENSIONS)
#include "extensions/common/extension_features.h"
#include "extensions/common/switches.h"
#endif // ENABLE_EXTENSIONS
#if BUILDFLAG(ENABLE_PDF)
#include "pdf/pdf_features.h"
#endif
#if BUILDFLAG(ENABLE_PRINTING)
#include "printing/printing_features.h"
#endif
#if defined(USE_OZONE)
#include "ui/ozone/public/ozone_switches.h"
#endif // USE_OZONE
#if defined(OS_WIN)
#include "base/win/windows_version.h"
#include "chrome/browser/win/titlebar_config.h"
#endif // OS_WIN
#if defined(TOOLKIT_VIEWS)
#include "ui/views/animation/installable_ink_drop.h"
#include "ui/views/views_features.h"
#include "ui/views/views_switches.h"
#endif // defined(TOOLKIT_VIEWS)
using flags_ui::FeatureEntry;
using flags_ui::kDeprecated;
using flags_ui::kOsAndroid;
using flags_ui::kOsCrOS;
using flags_ui::kOsCrOSOwnerOnly;
using flags_ui::kOsLinux;
using flags_ui::kOsMac;
using flags_ui::kOsWin;
namespace about_flags {
namespace {
const unsigned kOsAll = kOsMac | kOsWin | kOsLinux | kOsCrOS | kOsAndroid;
const unsigned kOsDesktop = kOsMac | kOsWin | kOsLinux | kOsCrOS;
#if defined(USE_AURA)
const unsigned kOsAura = kOsWin | kOsLinux | kOsCrOS;
#endif // USE_AURA
#if defined(USE_AURA)
const FeatureEntry::Choice kPullToRefreshChoices[] = {
{flags_ui::kGenericExperimentChoiceDefault, "", ""},
{flags_ui::kGenericExperimentChoiceDisabled, switches::kPullToRefresh, "0"},
{flags_ui::kGenericExperimentChoiceEnabled, switches::kPullToRefresh, "1"},
{flag_descriptions::kPullToRefreshEnabledTouchscreen,
switches::kPullToRefresh, "2"}};
#endif // USE_AURA
const FeatureEntry::Choice kOverlayStrategiesChoices[] = {
{flag_descriptions::kOverlayStrategiesDefault, "", ""},
{flag_descriptions::kOverlayStrategiesNone,
switches::kEnableHardwareOverlays, ""},
{flag_descriptions::kOverlayStrategiesUnoccludedFullscreen,
switches::kEnableHardwareOverlays, "single-fullscreen"},
{flag_descriptions::kOverlayStrategiesUnoccluded,
switches::kEnableHardwareOverlays, "single-fullscreen,single-on-top"},
{flag_descriptions::kOverlayStrategiesOccludedAndUnoccluded,
switches::kEnableHardwareOverlays,
"single-fullscreen,single-on-top,underlay"},
};
const FeatureEntry::Choice kTouchTextSelectionStrategyChoices[] = {
{flags_ui::kGenericExperimentChoiceDefault, "", ""},
{flag_descriptions::kTouchSelectionStrategyCharacter,
blink::switches::kTouchTextSelectionStrategy, "character"},
{flag_descriptions::kTouchSelectionStrategyDirection,
blink::switches::kTouchTextSelectionStrategy, "direction"}};
const FeatureEntry::Choice kTraceUploadURL[] = {
{flags_ui::kGenericExperimentChoiceDisabled, "", ""},
{flag_descriptions::kTraceUploadUrlChoiceOther, switches::kTraceUploadURL,
"https://performance-insights.appspot.com/upload?tags=flags,Other"},
{flag_descriptions::kTraceUploadUrlChoiceEmloading,
switches::kTraceUploadURL,
"https://performance-insights.appspot.com/upload?tags=flags,emloading"},
{flag_descriptions::kTraceUploadUrlChoiceQa, switches::kTraceUploadURL,
"https://performance-insights.appspot.com/upload?tags=flags,QA"},
{flag_descriptions::kTraceUploadUrlChoiceTesting, switches::kTraceUploadURL,
"https://performance-insights.appspot.com/upload?tags=flags,TestingTeam"}};
const FeatureEntry::Choice kLiteVideoDefaultDownlinkBandwidthKbps[] = {
{flags_ui::kGenericExperimentChoiceDefault, "", ""},
{"100", lite_video::switches::kLiteVideoDefaultDownlinkBandwidthKbps,
"100"},
{"150", lite_video::switches::kLiteVideoDefaultDownlinkBandwidthKbps,
"150"},
{"200", lite_video::switches::kLiteVideoDefaultDownlinkBandwidthKbps,
"200"},
{"250", lite_video::switches::kLiteVideoDefaultDownlinkBandwidthKbps,
"250"},
{"300", lite_video::switches::kLiteVideoDefaultDownlinkBandwidthKbps,
"300"},
{"350", lite_video::switches::kLiteVideoDefaultDownlinkBandwidthKbps,
"350"},
{"400", lite_video::switches::kLiteVideoDefaultDownlinkBandwidthKbps,
"400"},
{"450", lite_video::switches::kLiteVideoDefaultDownlinkBandwidthKbps,
"450"},
{"500", lite_video::switches::kLiteVideoDefaultDownlinkBandwidthKbps,
"500"},
{"600", lite_video::switches::kLiteVideoDefaultDownlinkBandwidthKbps,
"600"},
{"700", lite_video::switches::kLiteVideoDefaultDownlinkBandwidthKbps,
"700"},
{"800", lite_video::switches::kLiteVideoDefaultDownlinkBandwidthKbps,
"800"},
{"900", lite_video::switches::kLiteVideoDefaultDownlinkBandwidthKbps,
"900"}};
#if defined(OS_WIN)
const FeatureEntry::Choice kUseAngleChoices[] = {
{flag_descriptions::kUseAngleDefault, "", ""},
{flag_descriptions::kUseAngleGL, switches::kUseANGLE,
gl::kANGLEImplementationOpenGLName},
{flag_descriptions::kUseAngleD3D11, switches::kUseANGLE,
gl::kANGLEImplementationD3D11Name},
{flag_descriptions::kUseAngleD3D9, switches::kUseANGLE,
gl::kANGLEImplementationD3D9Name},
{flag_descriptions::kUseAngleD3D11on12, switches::kUseANGLE,
gl::kANGLEImplementationD3D11on12Name}};
#endif
#if BUILDFLAG(ENABLE_VR)
const FeatureEntry::Choice kWebXrForceRuntimeChoices[] = {
{flags_ui::kGenericExperimentChoiceDefault, "", ""},
{flag_descriptions::kWebXrRuntimeChoiceNone, switches::kWebXrForceRuntime,
switches::kWebXrRuntimeNone},
#if BUILDFLAG(ENABLE_OPENXR)
{flag_descriptions::kWebXrRuntimeChoiceOpenXR, switches::kWebXrForceRuntime,
switches::kWebXrRuntimeOpenXr},
#endif // ENABLE_OPENXR
};
#endif // ENABLE_VR
#if defined(OS_ANDROID)
const FeatureEntry::Choice kReaderModeHeuristicsChoices[] = {
{flags_ui::kGenericExperimentChoiceDefault, "", ""},
{flag_descriptions::kReaderModeHeuristicsMarkup,
switches::kReaderModeHeuristics,
switches::reader_mode_heuristics::kOGArticle},
{flag_descriptions::kReaderModeHeuristicsAdaboost,
switches::kReaderModeHeuristics,
switches::reader_mode_heuristics::kAdaBoost},
{flag_descriptions::kReaderModeHeuristicsAlwaysOn,
switches::kReaderModeHeuristics,
switches::reader_mode_heuristics::kAlwaysTrue},
{flag_descriptions::kReaderModeHeuristicsAlwaysOff,
switches::kReaderModeHeuristics, switches::reader_mode_heuristics::kNone},
{flag_descriptions::kReaderModeHeuristicsAllArticles,
switches::kReaderModeHeuristics,
switches::reader_mode_heuristics::kAllArticles},
};
const FeatureEntry::Choice kForceUpdateMenuTypeChoices[] = {
{flags_ui::kGenericExperimentChoiceDefault, "", ""},
{flag_descriptions::kUpdateMenuTypeNone, switches::kForceUpdateMenuType,
"none"},
{flag_descriptions::kUpdateMenuTypeUpdateAvailable,
switches::kForceUpdateMenuType, "update_available"},
{flag_descriptions::kUpdateMenuTypeUnsupportedOSVersion,
switches::kForceUpdateMenuType, "unsupported_os_version"},
{flag_descriptions::kUpdateMenuTypeInlineUpdateSuccess,
switches::kForceUpdateMenuType, "inline_update_success"},
{flag_descriptions::kUpdateMenuTypeInlineUpdateDialogCanceled,
switches::kForceUpdateMenuType, "inline_update_dialog_canceled"},
{flag_descriptions::kUpdateMenuTypeInlineUpdateDialogFailed,
switches::kForceUpdateMenuType, "inline_update_dialog_failed"},
{flag_descriptions::kUpdateMenuTypeInlineUpdateDownloadFailed,
switches::kForceUpdateMenuType, "inline_update_download_failed"},
{flag_descriptions::kUpdateMenuTypeInlineUpdateDownloadCanceled,
switches::kForceUpdateMenuType, "inline_update_download_canceled"},
{flag_descriptions::kUpdateMenuTypeInlineUpdateInstallFailed,
switches::kForceUpdateMenuType, "inline_update_install_failed"},
};
#else // !defined(OS_ANDROID)
const FeatureEntry::FeatureParam kReaderModeOfferInSettings[] = {
{switches::kReaderModeDiscoverabilityParamName,
switches::kReaderModeOfferInSettings}};
const FeatureEntry::FeatureVariation kReaderModeDiscoverabilityVariations[] = {
{"available in settings", kReaderModeOfferInSettings,
base::size(kReaderModeOfferInSettings), nullptr}};
#endif // OS_ANDROID
#if defined(OS_ANDROID)
const FeatureEntry::FeatureVariation kAdaptiveButtonInTopToolbarVariations[] = {
{
"Always None",
(FeatureEntry::FeatureParam[]){{"mode", "always-none"}},
1,
nullptr,
},
{
"Always New Tab",
(FeatureEntry::FeatureParam[]){{"mode", "always-new-tab"}},
1,
nullptr,
},
{
"Always Share",
(FeatureEntry::FeatureParam[]){{"mode", "always-share"}},
1,
nullptr,
},
{
"Always Voice",
(FeatureEntry::FeatureParam[]){{"mode", "always-voice"}},
1,
nullptr,
},
};
const FeatureEntry::FeatureVariation
kAdaptiveButtonInTopToolbarCustomizationVariations[] = {
{
"New Tab",
(FeatureEntry::FeatureParam[]){
{"default_segment", "new-tab"},
{"ignore_segmentation_results", "true"}},
1,
nullptr,
},
{
"Share",
(FeatureEntry::FeatureParam[]){
{"default_segment", "share"},
{"ignore_segmentation_results", "true"}},
1,
nullptr,
},
{
"Voice",
(FeatureEntry::FeatureParam[]){
{"default_segment", "voice"},
{"ignore_segmentation_results", "true"}},
1,
nullptr,
},
};
#endif // OS_ANDROID
#if defined(OS_ANDROID)
const FeatureEntry::FeatureParam kHideDismissButton[] = {
{"dismiss_button", "hide"}};
const FeatureEntry::FeatureParam kSuppressBottomSheet[] = {
{"consecutive_active_dismissal_limit", "3"}};
const FeatureEntry::FeatureVariation kMobileIdentityConsistencyVariations[] = {
{"Hide Dismiss Button", kHideDismissButton, base::size(kHideDismissButton),
nullptr},
{"Suppress Bottom Sheet", kSuppressBottomSheet,
base::size(kSuppressBottomSheet), nullptr},
};
#endif // OS_ANDROID
#if !BUILDFLAG(IS_CHROMEOS_ASH)
const FeatureEntry::FeatureParam kForceDark_SimpleHsl[] = {
{"inversion_method", "hsl_based"},
{"image_behavior", "none"},
{"text_lightness_threshold", "256"},
{"background_lightness_threshold", "0"}};
const FeatureEntry::FeatureParam kForceDark_SimpleCielab[] = {
{"inversion_method", "cielab_based"},
{"image_behavior", "none"},
{"text_lightness_threshold", "256"},
{"background_lightness_threshold", "0"}};
const FeatureEntry::FeatureParam kForceDark_SimpleRgb[] = {
{"inversion_method", "rgb_based"},
{"image_behavior", "none"},
{"text_lightness_threshold", "256"},
{"background_lightness_threshold", "0"}};
const FeatureEntry::FeatureParam kForceDark_SelectiveImageInversion[] = {
{"inversion_method", "cielab_based"},
{"image_behavior", "selective"},
{"text_lightness_threshold", "256"},
{"background_lightness_threshold", "0"}};
const FeatureEntry::FeatureParam kForceDark_SelectiveElementInversion[] = {
{"inversion_method", "cielab_based"},
{"image_behavior", "none"},
{"text_lightness_threshold", "150"},
{"background_lightness_threshold", "205"}};
const FeatureEntry::FeatureParam kForceDark_SelectiveGeneralInversion[] = {
{"inversion_method", "cielab_based"},
{"image_behavior", "selective"},
{"text_lightness_threshold", "150"},
{"background_lightness_threshold", "205"}};
const FeatureEntry::FeatureParam kForceDark_IncreaseTextContrast[] = {
{"increase_text_contrast", "true"}};
const FeatureEntry::FeatureVariation kForceDarkVariations[] = {
{"with simple HSL-based inversion", kForceDark_SimpleHsl,
base::size(kForceDark_SimpleHsl), nullptr},
{"with simple CIELAB-based inversion", kForceDark_SimpleCielab,
base::size(kForceDark_SimpleCielab), nullptr},
{"with simple RGB-based inversion", kForceDark_SimpleRgb,
base::size(kForceDark_SimpleRgb), nullptr},
{"with selective image inversion", kForceDark_SelectiveImageInversion,
base::size(kForceDark_SelectiveImageInversion), nullptr},
{"with selective inversion of non-image elements",
kForceDark_SelectiveElementInversion,
base::size(kForceDark_SelectiveElementInversion), nullptr},
{"with selective inversion of everything",
kForceDark_SelectiveGeneralInversion,
base::size(kForceDark_SelectiveGeneralInversion), nullptr},
{"with increased text contrast", kForceDark_IncreaseTextContrast,
base::size(kForceDark_IncreaseTextContrast), nullptr}};
#endif // !OS_CHROMEOS
const FeatureEntry::FeatureParam kMBIModeLegacy[] = {{"mode", "legacy"}};
const FeatureEntry::FeatureParam kMBIModeEnabledPerRenderProcessHost[] = {
{"mode", "per_render_process_host"}};
const FeatureEntry::FeatureParam kMBIModeEnabledPerSiteInstance[] = {
{"mode", "per_site_instance"}};
const FeatureEntry::FeatureVariation kMBIModeVariations[] = {
{"legacy mode", kMBIModeLegacy, base::size(kMBIModeLegacy), nullptr},
{"per render process host", kMBIModeEnabledPerRenderProcessHost,
base::size(kMBIModeEnabledPerRenderProcessHost), nullptr},
{"per site instance", kMBIModeEnabledPerSiteInstance,
base::size(kMBIModeEnabledPerSiteInstance), nullptr}};
const FeatureEntry::FeatureParam kIntensiveWakeUpThrottlingAfter10Seconds[] = {
{blink::features::kIntensiveWakeUpThrottling_GracePeriodSeconds_Name,
"10"}};
const FeatureEntry::FeatureVariation kIntensiveWakeUpThrottlingVariations[] = {
{"10 seconds after a tab is hidden (facilitates testing)",
kIntensiveWakeUpThrottlingAfter10Seconds,
base::size(kIntensiveWakeUpThrottlingAfter10Seconds), nullptr},
};
const FeatureEntry::FeatureParam kFencedFramesImplementationTypeShadowDOM[] = {
{"implementation_type", "shadow_dom"}};
const FeatureEntry::FeatureParam kFencedFramesImplementationTypeMPArch[] = {
{"implementation_type", "mparch"}};
const FeatureEntry::FeatureVariation
kFencedFramesImplementationTypeVariations[] = {
{"with ShadowDOM", kFencedFramesImplementationTypeShadowDOM,
base::size(kFencedFramesImplementationTypeShadowDOM), nullptr},
{"with multiple page architecture",
kFencedFramesImplementationTypeMPArch,
base::size(kFencedFramesImplementationTypeMPArch), nullptr}};
#if defined(OS_ANDROID)
const FeatureEntry::FeatureParam kCloseTabSuggestionsStale_Immediate[] = {
{"baseline_tab_suggestions", "true"},
{"baseline_close_tab_suggestions", "true"}};
const FeatureEntry::FeatureParam kCloseTabSuggestionsStale_4Hours[] = {
{"close_tab_suggestions_stale_time_ms", "14400000"}};
const FeatureEntry::FeatureParam kCloseTabSuggestionsStale_8Hours[] = {
{"close_tab_suggestions_stale_time_ms", "28800000"}};
const FeatureEntry::FeatureParam kCloseTabSuggestionsStale_7Days[] = {
{"close_tab_suggestions_stale_time_ms", "604800000"}};
const FeatureEntry::FeatureParam kCloseTabSuggestionsTimeSiteEngagement[] = {
{"close_tab_min_num_tabs", "5"},
{"close_tab_features_time_last_used_enabled", "true"},
{"close_tab_features_time_last_used_transform", "MEAN_VARIANCE"},
{"close_tab_features_time_last_used_threshold", "0.5"},
{"close_tab_features_site_engagement_enabled", "true"},
{"close_tab_features_site_engagement_threshold", "90.0"},
};
const FeatureEntry::FeatureParam kGroupAndCloseTabSuggestions_Immediate[] = {
{"baseline_tab_suggestions", "true"},
{"baseline_group_tab_suggestions", "true"},
{"baseline_close_tab_suggestions", "true"}};
const FeatureEntry::FeatureVariation kCloseTabSuggestionsStaleVariations[] = {
{"Close Immediate", kCloseTabSuggestionsStale_Immediate,
base::size(kCloseTabSuggestionsStale_Immediate), nullptr},
{"Group+Close Immediate", kGroupAndCloseTabSuggestions_Immediate,
base::size(kGroupAndCloseTabSuggestions_Immediate), nullptr},
{"4 hours", kCloseTabSuggestionsStale_4Hours,
base::size(kCloseTabSuggestionsStale_4Hours), nullptr},
{"8 hours", kCloseTabSuggestionsStale_8Hours,
base::size(kCloseTabSuggestionsStale_8Hours), nullptr},
{"7 days", kCloseTabSuggestionsStale_7Days,
base::size(kCloseTabSuggestionsStale_7Days), nullptr},
{"Time & Site Engagement", kCloseTabSuggestionsTimeSiteEngagement,
base::size(kCloseTabSuggestionsTimeSiteEngagement), nullptr},
};
const FeatureEntry::FeatureParam kWebNoteStylizeRandomizeParam[] = {
{"randomize_order", "true"}};
const FeatureEntry::FeatureVariation kWebNoteStylizeVariations[] = {
{"With Randomized Order", kWebNoteStylizeRandomizeParam,
base::size(kWebNoteStylizeRandomizeParam), nullptr}};
#endif // OS_ANDROID
const FeatureEntry::Choice kEnableGpuRasterizationChoices[] = {
{flags_ui::kGenericExperimentChoiceDefault, "", ""},
{flags_ui::kGenericExperimentChoiceEnabled,
switches::kEnableGpuRasterization, ""},
{flags_ui::kGenericExperimentChoiceDisabled,
switches::kDisableGpuRasterization, ""},
};
const FeatureEntry::Choice kEnableOopRasterizationChoices[] = {
{flags_ui::kGenericExperimentChoiceDefault, "", ""},
{flags_ui::kGenericExperimentChoiceEnabled,
switches::kEnableOopRasterization, ""},
{flags_ui::kGenericExperimentChoiceDisabled,
switches::kDisableOopRasterization, ""},
};
const FeatureEntry::Choice kExtensionContentVerificationChoices[] = {
{flags_ui::kGenericExperimentChoiceDefault, "", ""},
{flag_descriptions::kExtensionContentVerificationBootstrap,
switches::kExtensionContentVerification,
switches::kExtensionContentVerificationBootstrap},
{flag_descriptions::kExtensionContentVerificationEnforce,
switches::kExtensionContentVerification,
switches::kExtensionContentVerificationEnforce},
{flag_descriptions::kExtensionContentVerificationEnforceStrict,
switches::kExtensionContentVerification,
switches::kExtensionContentVerificationEnforceStrict},
};
const FeatureEntry::Choice kTopChromeTouchUiChoices[] = {
{flags_ui::kGenericExperimentChoiceDefault, "", ""},
{flags_ui::kGenericExperimentChoiceAutomatic, switches::kTopChromeTouchUi,
switches::kTopChromeTouchUiAuto},
{flags_ui::kGenericExperimentChoiceDisabled, switches::kTopChromeTouchUi,
switches::kTopChromeTouchUiDisabled},
{flags_ui::kGenericExperimentChoiceEnabled, switches::kTopChromeTouchUi,
switches::kTopChromeTouchUiEnabled}};
#if BUILDFLAG(IS_CHROMEOS_ASH)
const char kArcUseHighMemoryDalvikProfileInternalName[] =
"arc-use-high-memory-dalvik-profile";
const char kLacrosPrimaryInternalName[] = "lacros-primary";
const char kLacrosSupportInternalName[] = "lacros-support";
const char kLacrosStabilityInternalName[] = "lacros-stability";
const char kWebAppsCrosapiInternalName[] = "web-apps-crosapi";
const FeatureEntry::Choice kLacrosStabilityChoices[] = {
{flags_ui::kGenericExperimentChoiceDefault, "", ""},
{flag_descriptions::kLacrosStabilityLeastStableDescription,
crosapi::browser_util::kLacrosStabilitySwitch,
crosapi::browser_util::kLacrosStabilityLeastStable},
{flag_descriptions::kLacrosStabilityLessStableDescription,
crosapi::browser_util::kLacrosStabilitySwitch,
crosapi::browser_util::kLacrosStabilityLessStable},
{flag_descriptions::kLacrosStabilityMoreStableDescription,
crosapi::browser_util::kLacrosStabilitySwitch,
crosapi::browser_util::kLacrosStabilityMoreStable},
};
const char kLacrosSelectionInternalName[] = "lacros-selection";
const FeatureEntry::Choice kLacrosSelectionChoices[] = {
{flags_ui::kGenericExperimentChoiceDefault, "", ""},
{flag_descriptions::kLacrosSelectionStatefulDescription,
crosapi::browser_util::kLacrosSelectionSwitch,
crosapi::browser_util::kLacrosSelectionStateful},
{flag_descriptions::kLacrosSelectionRootfsDescription,
crosapi::browser_util::kLacrosSelectionSwitch,
crosapi::browser_util::kLacrosSelectionRootfs},
};
#endif // BUILDFLAG(IS_CHROMEOS_ASH)
#if BUILDFLAG(IS_CHROMEOS_ASH)
const FeatureEntry::Choice kCrosRegionsModeChoices[] = {
{flag_descriptions::kCrosRegionsModeDefault, "", ""},
{flag_descriptions::kCrosRegionsModeOverride,
chromeos::switches::kCrosRegionsMode,
chromeos::switches::kCrosRegionsModeOverride},
{flag_descriptions::kCrosRegionsModeHide,
chromeos::switches::kCrosRegionsMode,
chromeos::switches::kCrosRegionsModeHide},
};
#endif // BUILDFLAG(IS_CHROMEOS_ASH)
const FeatureEntry::Choice kForceUIDirectionChoices[] = {
{flags_ui::kGenericExperimentChoiceDefault, "", ""},
{flag_descriptions::kForceDirectionLtr, switches::kForceUIDirection,
switches::kForceDirectionLTR},
{flag_descriptions::kForceDirectionRtl, switches::kForceUIDirection,
switches::kForceDirectionRTL},
};
const FeatureEntry::Choice kForceTextDirectionChoices[] = {
{flags_ui::kGenericExperimentChoiceDefault, "", ""},
{flag_descriptions::kForceDirectionLtr, switches::kForceTextDirection,
switches::kForceDirectionLTR},
{flag_descriptions::kForceDirectionRtl, switches::kForceTextDirection,
switches::kForceDirectionRTL},
};
#if BUILDFLAG(IS_CHROMEOS_ASH)
const FeatureEntry::FeatureParam
kDesktopPWAsAttentionBadgingCrOSApiAndNotifications[] = {
{"badge-source",
switches::kDesktopPWAsAttentionBadgingCrOSApiAndNotifications}};
const FeatureEntry::FeatureParam
kDesktopPWAsAttentionBadgingCrOSApiOverridesNotifications[] = {
{"badge-source",
switches::kDesktopPWAsAttentionBadgingCrOSApiOverridesNotifications}};
const FeatureEntry::FeatureParam kDesktopPWAsAttentionBadgingCrOSApiOnly[] = {
{"badge-source", switches::kDesktopPWAsAttentionBadgingCrOSApiOnly}};
const FeatureEntry::FeatureParam
kDesktopPWAsAttentionBadgingCrOSNotificationsOnly[] = {
{"badge-source",
switches::kDesktopPWAsAttentionBadgingCrOSNotificationsOnly}};
const FeatureEntry::FeatureVariation
kDesktopPWAsAttentionBadgingCrOSVariations[] = {
{flag_descriptions::kDesktopPWAsAttentionBadgingCrOSApiAndNotifications,
kDesktopPWAsAttentionBadgingCrOSApiAndNotifications,
base::size(kDesktopPWAsAttentionBadgingCrOSApiAndNotifications),
nullptr},
{flag_descriptions::
kDesktopPWAsAttentionBadgingCrOSApiOverridesNotifications,
kDesktopPWAsAttentionBadgingCrOSApiOverridesNotifications,
base::size(kDesktopPWAsAttentionBadgingCrOSApiOverridesNotifications),
nullptr},
{flag_descriptions::kDesktopPWAsAttentionBadgingCrOSApiOnly,
kDesktopPWAsAttentionBadgingCrOSApiOnly,
base::size(kDesktopPWAsAttentionBadgingCrOSApiOnly), nullptr},
{flag_descriptions::kDesktopPWAsAttentionBadgingCrOSNotificationsOnly,
kDesktopPWAsAttentionBadgingCrOSNotificationsOnly,
base::size(kDesktopPWAsAttentionBadgingCrOSNotificationsOnly),
nullptr},
};
const FeatureEntry::Choice kSchedulerConfigurationChoices[] = {
{flags_ui::kGenericExperimentChoiceDefault, "", ""},
{flag_descriptions::kSchedulerConfigurationConservative,
switches::kSchedulerConfiguration,
switches::kSchedulerConfigurationConservative},
{flag_descriptions::kSchedulerConfigurationPerformance,
switches::kSchedulerConfiguration,
switches::kSchedulerConfigurationPerformance},
};
#endif // BUILDFLAG(IS_CHROMEOS_ASH)
#if defined(OS_ANDROID)
const FeatureEntry::FeatureParam kCompactSuggestions_SemicompactVariant[] = {
{"omnibox_compact_suggestions_variant", "semi-compact"}};
const FeatureEntry::FeatureVariation kCompactSuggestionsVariations[] = {
{"- Semi-compact", kCompactSuggestions_SemicompactVariant,
base::size(kCompactSuggestions_SemicompactVariant), nullptr},
};
#endif // OS_ANDROID
const FeatureEntry::Choice kEnableUseZoomForDSFChoices[] = {
{flag_descriptions::kEnableUseZoomForDsfChoiceDefault, "", ""},
{flag_descriptions::kEnableUseZoomForDsfChoiceEnabled,
switches::kEnableUseZoomForDSF, "true"},
{flag_descriptions::kEnableUseZoomForDsfChoiceDisabled,
switches::kEnableUseZoomForDSF, "false"},
};
const FeatureEntry::Choice kSiteIsolationOptOutChoices[] = {
{flag_descriptions::kSiteIsolationOptOutChoiceDefault, "", ""},
{flag_descriptions::kSiteIsolationOptOutChoiceOptOut,
switches::kDisableSiteIsolation, ""},
};
const FeatureEntry::Choice kForceColorProfileChoices[] = {
{flags_ui::kGenericExperimentChoiceDefault, "", ""},
{flag_descriptions::kForceColorProfileSRGB,
switches::kForceDisplayColorProfile, "srgb"},
{flag_descriptions::kForceColorProfileP3,
switches::kForceDisplayColorProfile, "display-p3-d65"},
{flag_descriptions::kForceColorProfileColorSpin,
switches::kForceDisplayColorProfile, "color-spin-gamma24"},
{flag_descriptions::kForceColorProfileSCRGBLinear,
switches::kForceDisplayColorProfile, "scrgb-linear"},
{flag_descriptions::kForceColorProfileHDR10,
switches::kForceDisplayColorProfile, "hdr10"},
};
const FeatureEntry::Choice kForceEffectiveConnectionTypeChoices[] = {
{flags_ui::kGenericExperimentChoiceDefault, "", ""},
{flag_descriptions::kEffectiveConnectionTypeUnknownDescription,
network::switches::kForceEffectiveConnectionType,
net::kEffectiveConnectionTypeUnknown},
{flag_descriptions::kEffectiveConnectionTypeOfflineDescription,
network::switches::kForceEffectiveConnectionType,
net::kEffectiveConnectionTypeOffline},
{flag_descriptions::kEffectiveConnectionTypeSlow2GDescription,
network::switches::kForceEffectiveConnectionType,
net::kEffectiveConnectionTypeSlow2G},
{flag_descriptions::kEffectiveConnectionTypeSlow2GOnCellularDescription,
network::switches::kForceEffectiveConnectionType,
net::kEffectiveConnectionTypeSlow2GOnCellular},
{flag_descriptions::kEffectiveConnectionType2GDescription,
network::switches::kForceEffectiveConnectionType,
net::kEffectiveConnectionType2G},
{flag_descriptions::kEffectiveConnectionType3GDescription,
network::switches::kForceEffectiveConnectionType,
net::kEffectiveConnectionType3G},
{flag_descriptions::kEffectiveConnectionType4GDescription,
network::switches::kForceEffectiveConnectionType,
net::kEffectiveConnectionType4G},
};
// Ensure that all effective connection types returned by Network Quality
// Estimator (NQE) are also exposed via flags.
static_assert(net::EFFECTIVE_CONNECTION_TYPE_LAST + 2 ==
base::size(kForceEffectiveConnectionTypeChoices),
"ECT enum value is not handled.");
static_assert(net::EFFECTIVE_CONNECTION_TYPE_UNKNOWN == 0,
"ECT enum value is not handled.");
static_assert(net::EFFECTIVE_CONNECTION_TYPE_4G + 1 ==
net::EFFECTIVE_CONNECTION_TYPE_LAST,
"ECT enum value is not handled.");
const FeatureEntry::FeatureParam kIsolatedPrerenderPrefetchLimitNone[] = {
{"max_srp_prefetches", "-1"}};
const FeatureEntry::FeatureParam kIsolatedPrerenderPrefetchLimitZero[] = {
{"max_srp_prefetches", "0"}};
const FeatureEntry::FeatureParam kIsolatedPrerenderPrefetchLimitOne[] = {
{"max_srp_prefetches", "1"}};
const FeatureEntry::FeatureParam kIsolatedPrerenderPrefetchLimitTwo[] = {
{"max_srp_prefetches", "2"}};
const FeatureEntry::FeatureParam kIsolatedPrerenderPrefetchLimitThree[] = {
{"max_srp_prefetches", "3"}};
const FeatureEntry::FeatureParam kIsolatedPrerenderPrefetchLimitFour[] = {
{"max_srp_prefetches", "4"}};
const FeatureEntry::FeatureParam kIsolatedPrerenderPrefetchLimitFive[] = {
{"max_srp_prefetches", "5"}};
const FeatureEntry::FeatureParam kIsolatedPrerenderPrefetchLimitTen[] = {
{"max_srp_prefetches", "10"}};
const FeatureEntry::FeatureParam kIsolatedPrerenderPrefetchLimitFifteen[] = {
{"max_srp_prefetches", "15"}};
const FeatureEntry::FeatureVariation
kIsolatedPrerenderFeatureWithPrefetchLimit[] = {
{"Unlimited Prefetches", kIsolatedPrerenderPrefetchLimitNone,
base::size(kIsolatedPrerenderPrefetchLimitNone), nullptr},
{"Zero Prefetches", kIsolatedPrerenderPrefetchLimitZero,
base::size(kIsolatedPrerenderPrefetchLimitZero), nullptr},
{"One Prefetch", kIsolatedPrerenderPrefetchLimitOne,
base::size(kIsolatedPrerenderPrefetchLimitOne), nullptr},
{"Two Prefetches", kIsolatedPrerenderPrefetchLimitTwo,
base::size(kIsolatedPrerenderPrefetchLimitTwo), nullptr},
{"Three Prefetches", kIsolatedPrerenderPrefetchLimitThree,
base::size(kIsolatedPrerenderPrefetchLimitThree), nullptr},
{"Four Prefetches", kIsolatedPrerenderPrefetchLimitFour,
base::size(kIsolatedPrerenderPrefetchLimitFour), nullptr},
{"Five Prefetches", kIsolatedPrerenderPrefetchLimitFive,
base::size(kIsolatedPrerenderPrefetchLimitFive), nullptr},
{"Ten Prefetches", kIsolatedPrerenderPrefetchLimitTen,
base::size(kIsolatedPrerenderPrefetchLimitTen), nullptr},
{"Fifteen Prefetches", kIsolatedPrerenderPrefetchLimitFifteen,
base::size(kIsolatedPrerenderPrefetchLimitFifteen), nullptr},
};
const FeatureEntry::Choice kMemlogModeChoices[] = {
{flags_ui::kGenericExperimentChoiceDisabled, "", ""},
{flag_descriptions::kMemlogModeMinimal, heap_profiling::kMemlogMode,
heap_profiling::kMemlogModeMinimal},
{flag_descriptions::kMemlogModeAll, heap_profiling::kMemlogMode,
heap_profiling::kMemlogModeAll},
{flag_descriptions::kMemlogModeBrowser, heap_profiling::kMemlogMode,
heap_profiling::kMemlogModeBrowser},
{flag_descriptions::kMemlogModeGpu, heap_profiling::kMemlogMode,
heap_profiling::kMemlogModeGpu},
{flag_descriptions::kMemlogModeAllRenderers, heap_profiling::kMemlogMode,
heap_profiling::kMemlogModeAllRenderers},
{flag_descriptions::kMemlogModeRendererSampling,
heap_profiling::kMemlogMode, heap_profiling::kMemlogModeRendererSampling},
};
const FeatureEntry::Choice kMemlogStackModeChoices[] = {
{flags_ui::kGenericExperimentChoiceDefault, "", ""},
{flag_descriptions::kMemlogStackModeNative,
heap_profiling::kMemlogStackMode, heap_profiling::kMemlogStackModeNative},
{flag_descriptions::kMemlogStackModeNativeWithThreadNames,
heap_profiling::kMemlogStackMode,
heap_profiling::kMemlogStackModeNativeWithThreadNames},
};
const FeatureEntry::Choice kMemlogSamplingRateChoices[] = {
{flags_ui::kGenericExperimentChoiceDefault, "", ""},
{flag_descriptions::kMemlogSamplingRate10KB,
heap_profiling::kMemlogSamplingRate,
heap_profiling::kMemlogSamplingRate10KB},
{flag_descriptions::kMemlogSamplingRate50KB,
heap_profiling::kMemlogSamplingRate,
heap_profiling::kMemlogSamplingRate50KB},
{flag_descriptions::kMemlogSamplingRate100KB,
heap_profiling::kMemlogSamplingRate,
heap_profiling::kMemlogSamplingRate100KB},
{flag_descriptions::kMemlogSamplingRate500KB,
heap_profiling::kMemlogSamplingRate,
heap_profiling::kMemlogSamplingRate500KB},
{flag_descriptions::kMemlogSamplingRate1MB,
heap_profiling::kMemlogSamplingRate,
heap_profiling::kMemlogSamplingRate1MB},
{flag_descriptions::kMemlogSamplingRate5MB,
heap_profiling::kMemlogSamplingRate,
heap_profiling::kMemlogSamplingRate5MB},
};
const FeatureEntry::FeatureVariation kMemoriesVariations[] = {
{
"Visit Limit 200",
(FeatureEntry::FeatureParam[]){{"MemoriesMaxVisitsToCluster", "200"}},
1,
nullptr,
},
{
"Visit Limit 200, Experiment A",
(FeatureEntry::FeatureParam[]){
{"MemoriesExperimentName", "A"},
{"MemoriesMaxVisitsToCluster", "200"},
},
2,
nullptr,
},
{
"Visit Limit 200, Experiment B",
(FeatureEntry::FeatureParam[]){
{"MemoriesExperimentName", "B"},
{"MemoriesMaxVisitsToCluster", "200"},
},
2,
nullptr,
},
{
"Visit Limit 200, Experiment C",
(FeatureEntry::FeatureParam[]){
{"MemoriesExperimentName", "C"},
{"MemoriesMaxVisitsToCluster", "200"},
},
2,
nullptr,
},
{
"Visit Limit 10k",
(FeatureEntry::FeatureParam[]){{"MemoriesMaxVisitsToCluster", "10000"}},
1,
nullptr,
},
};
#if defined(OS_LINUX) || defined(OS_CHROMEOS) || defined(OS_MAC) || \
defined(OS_WIN)
const FeatureEntry::FeatureParam kOmniboxDocumentProviderServerScoring[] = {
{"DocumentUseServerScore", "true"},
{"DocumentUseClientScore", "false"},
{"DocumentCapScorePerRank", "false"},
{"DocumentBoostOwned", "false"},
};
const FeatureEntry::FeatureParam