chrome/browser/prefs/browser_prefs.cc

// Copyright 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/prefs/browser_prefs.h"

#include <string>

#include "base/metrics/histogram_macros.h"
#include "base/trace_event/trace_event.h"
#include "build/build_config.h"
#include "chrome/browser/about_flags.h"
#include "chrome/browser/accessibility/accessibility_labels_prefs.h"
#include "chrome/browser/accessibility/accessibility_ui.h"
#include "chrome/browser/accessibility/invert_bubble_prefs.h"
#include "chrome/browser/browser_process_impl.h"
#include "chrome/browser/chrome_content_browser_client.h"
#include "chrome/browser/component_updater/component_updater_prefs.h"
#include "chrome/browser/custom_handlers/protocol_handler_registry.h"
#include "chrome/browser/devtools/devtools_window.h"
#include "chrome/browser/download/download_prefs.h"
#include "chrome/browser/engagement/important_sites_util.h"
#include "chrome/browser/external_protocol/external_protocol_handler.h"
#include "chrome/browser/first_run/first_run.h"
#include "chrome/browser/gpu/gpu_mode_manager.h"
#include "chrome/browser/intranet_redirect_detector.h"
#include "chrome/browser/io_thread.h"
#include "chrome/browser/lifetime/browser_shutdown.h"
#include "chrome/browser/media/media_device_id_salt.h"
#include "chrome/browser/media/media_engagement_service.h"
#include "chrome/browser/media/media_storage_id_salt.h"
#include "chrome/browser/media/router/media_router_feature.h"
#include "chrome/browser/media/webrtc/media_capture_devices_dispatcher.h"
#include "chrome/browser/media/webrtc/media_stream_devices_controller.h"
#include "chrome/browser/metrics/chrome_metrics_service_client.h"
#include "chrome/browser/net/net_error_tab_helper.h"
#include "chrome/browser/net/prediction_options.h"
#include "chrome/browser/net/profile_network_context_service.h"
#include "chrome/browser/net/system_network_context_manager.h"
#include "chrome/browser/notifications/notification_channels_provider_android.h"
#include "chrome/browser/notifications/notifier_state_tracker.h"
#include "chrome/browser/notifications/platform_notification_service_impl.h"
#include "chrome/browser/pepper_flash_settings_manager.h"
#include "chrome/browser/policy/developer_tools_policy_handler.h"
#include "chrome/browser/policy/policy_helpers.h"
#include "chrome/browser/prefs/chrome_pref_service_factory.h"
#include "chrome/browser/prefs/incognito_mode_prefs.h"
#include "chrome/browser/prefs/origin_trial_prefs.h"
#include "chrome/browser/prefs/session_startup_pref.h"
#include "chrome/browser/previews/previews_lite_page_decider.h"
#include "chrome/browser/profiles/chrome_version_service.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profile_impl.h"
#include "chrome/browser/profiles/profile_info_cache.h"
#include "chrome/browser/profiles/profiles_state.h"
#include "chrome/browser/push_messaging/push_messaging_app_identifier.h"
#include "chrome/browser/renderer_host/pepper/device_id_fetcher.h"
#include "chrome/browser/rlz/chrome_rlz_tracker_delegate.h"
#include "chrome/browser/search/search.h"
#include "chrome/browser/signin/signin_manager_factory.h"
#include "chrome/browser/ssl/chrome_ssl_host_state_delegate.h"
#include "chrome/browser/ssl/ssl_config_service_manager.h"
#include "chrome/browser/task_manager/task_manager_interface.h"
#include "chrome/browser/tracing/chrome_tracing_delegate.h"
#include "chrome/browser/ui/blocked_content/safe_browsing_triggered_popup_blocker.h"
#include "chrome/browser/ui/browser_ui_prefs.h"
#include "chrome/browser/ui/navigation_correction_tab_observer.h"
#include "chrome/browser/ui/network_profile_bubble.h"
#include "chrome/browser/ui/prefs/prefs_tab_helper.h"
#include "chrome/browser/ui/search_engines/keyword_editor_controller.h"
#include "chrome/browser/ui/tabs/pinned_tab_codec.h"
#include "chrome/browser/ui/webui/flags_ui.h"
#include "chrome/browser/ui/webui/ntp/new_tab_ui.h"
#include "chrome/browser/ui/webui/print_preview/policy_settings.h"
#include "chrome/browser/ui/webui/print_preview/sticky_settings.h"
#include "chrome/browser/web_applications/web_app_provider.h"
#include "chrome/browser/webauthn/chrome_authenticator_request_delegate.h"
#include "chrome/common/buildflags.h"
#include "chrome/common/pref_names.h"
#include "chrome/common/secure_origin_whitelist.h"
#include "components/autofill/core/common/autofill_prefs.h"
#include "components/browsing_data/core/pref_names.h"
#include "components/certificate_transparency/pref_names.h"
#include "components/content_settings/core/browser/host_content_settings_map.h"
#include "components/dom_distiller/core/distilled_page_prefs.h"
#include "components/feature_engagement/buildflags.h"
#include "components/flags_ui/pref_service_flags_storage.h"
#include "components/gcm_driver/gcm_channel_status_syncer.h"
#include "components/image_fetcher/core/cache/image_cache.h"
#include "components/invalidation/impl/invalidator_registrar_with_memory.h"
#include "components/invalidation/impl/per_user_topic_registration_manager.h"
#include "components/language/content/browser/geo_language_provider.h"
#include "components/metrics/metrics_pref_names.h"
#include "components/network_time/network_time_tracker.h"
#include "components/ntp_snippets/content_suggestions_service.h"
#include "components/ntp_snippets/remote/remote_suggestions_provider_impl.h"
#include "components/ntp_snippets/remote/remote_suggestions_scheduler_impl.h"
#include "components/ntp_snippets/remote/request_throttler.h"
#include "components/ntp_snippets/user_classifier.h"
#include "components/ntp_tiles/most_visited_sites.h"
#include "components/offline_pages/buildflags/buildflags.h"
#include "components/omnibox/browser/document_provider.h"
#include "components/omnibox/browser/zero_suggest_provider.h"
#include "components/password_manager/core/browser/password_bubble_experiment.h"
#include "components/password_manager/core/browser/password_manager.h"
#include "components/payments/core/payment_prefs.h"
#include "components/policy/core/browser/browser_policy_connector.h"
#include "components/policy/core/browser/url_blacklist_manager.h"
#include "components/policy/core/common/policy_statistics_collector.h"
#include "components/pref_registry/pref_registry_syncable.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/pref_service.h"
#include "components/proxy_config/pref_proxy_config_tracker_impl.h"
#include "components/rappor/rappor_service_impl.h"
#include "components/safe_browsing/common/safe_browsing_prefs.h"
#include "components/search_engines/template_url_prepopulate_data.h"
#include "components/sessions/core/session_id_generator.h"
#include "components/startup_metric_utils/browser/startup_metric_utils.h"
#include "components/subresource_filter/content/browser/ruleset_service.h"
#include "components/sync/base/sync_prefs.h"
#include "components/sync_preferences/pref_service_syncable.h"
#include "components/sync_sessions/session_sync_prefs.h"
#include "components/translate/core/browser/translate_prefs.h"
#include "components/update_client/update_client.h"
#include "components/variations/service/variations_service.h"
#include "content/public/browser/render_process_host.h"
#include "extensions/buildflags/buildflags.h"
#include "net/http/http_server_properties_manager.h"
#include "ppapi/buildflags/buildflags.h"
#include "printing/buildflags/buildflags.h"
#include "rlz/buildflags/buildflags.h"

#if BUILDFLAG(ENABLE_APP_LIST)
#include "chrome/browser/ui/app_list/app_list_syncable_service.h"
#endif

#if BUILDFLAG(ENABLE_BACKGROUND_MODE)
#include "chrome/browser/background/background_mode_manager.h"
#endif

#if BUILDFLAG(ENABLE_EXTENSIONS)
#include "chrome/browser/accessibility/animation_policy_prefs.h"
#include "chrome/browser/apps/platform_apps/shortcut_manager.h"
#include "chrome/browser/extensions/activity_log/activity_log.h"
#include "chrome/browser/extensions/api/commands/command_service.h"
#include "chrome/browser/extensions/api/cryptotoken_private/cryptotoken_private_api.h"
#include "chrome/browser/extensions/api/tabs/tabs_api.h"
#include "chrome/browser/extensions/extension_web_ui.h"
#include "chrome/browser/extensions/launch_util.h"
#include "chrome/browser/extensions/ntp_overridden_bubble_delegate.h"
#include "chrome/browser/ui/toolbar/component_toolbar_actions_factory.h"
#include "chrome/browser/ui/toolbar/toolbar_actions_bar.h"
#include "chrome/browser/ui/webui/extensions/extensions_ui.h"
#include "extensions/browser/api/audio/audio_api.h"
#include "extensions/browser/api/runtime/runtime_api.h"
#include "extensions/browser/extension_prefs.h"
#if defined(OS_CHROMEOS)
#include "chrome/browser/chromeos/login/easy_unlock/easy_unlock_service.h"
#include "chrome/browser/component_updater/metadata_table_chromeos.h"
#else
#include "chrome/browser/extensions/api/enterprise_reporting_private/prefs.h"
#endif
#endif  // BUILDFLAG(ENABLE_EXTENSIONS)

#if BUILDFLAG(ENABLE_OFFLINE_PAGES)
#include "chrome/browser/offline_pages/prefetch/offline_metrics_collector_impl.h"
#include "chrome/browser/offline_pages/prefetch/prefetch_background_task_handler_impl.h"
#include "components/offline_pages/core/prefetch/prefetch_prefs.h"
#endif

#if BUILDFLAG(ENABLE_PLUGINS)
#include "chrome/browser/plugins/plugin_info_host_impl.h"
#include "chrome/browser/plugins/plugins_resource_service.h"
#endif

#if BUILDFLAG(ENABLE_SUPERVISED_USERS)
#include "chrome/browser/supervised_user/child_accounts/child_account_service.h"
#include "chrome/browser/supervised_user/supervised_user_service.h"
#include "chrome/browser/supervised_user/supervised_user_whitelist_service.h"
#endif

#if BUILDFLAG(ENABLE_SERVICE_DISCOVERY)
#include "chrome/browser/ui/webui/local_discovery/local_discovery_ui.h"
#endif

#if BUILDFLAG(ENABLE_DESKTOP_IN_PRODUCT_HELP)
#include "chrome/browser/feature_engagement/session_duration_updater.h"
#endif

#if defined(OS_ANDROID)
#include "chrome/browser/android/bookmarks/partner_bookmarks_shim.h"
#include "chrome/browser/android/contextual_suggestions/contextual_suggestions_prefs.h"
#include "chrome/browser/android/explore_sites/history_statistics_reporter.h"
#include "chrome/browser/android/ntp/content_suggestions_notifier_service.h"
#include "chrome/browser/android/ntp/recent_tabs_page_prefs.h"
#include "chrome/browser/android/oom_intervention/oom_intervention_decider.h"
#include "chrome/browser/android/preferences/browser_prefs_android.h"
#include "chrome/browser/android/usage_stats/usage_stats_bridge.h"
#include "chrome/browser/geolocation/geolocation_permission_context_android.h"
#include "chrome/browser/ntp_snippets/download_suggestions_provider.h"
#include "components/cdm/browser/media_drm_storage_impl.h"
#include "components/feed/buildflags.h"
#include "components/ntp_snippets/breaking_news/breaking_news_gcm_app_handler.h"
#include "components/ntp_snippets/breaking_news/subscription_manager_impl.h"
#include "components/ntp_snippets/category_rankers/click_based_category_ranker.h"
#include "components/ntp_tiles/popular_sites_impl.h"
#if BUILDFLAG(ENABLE_FEED_IN_CHROME)
#include "components/feed/core/feed_scheduler_host.h"
#include "components/feed/core/refresh_throttler.h"
#include "components/feed/core/user_classifier.h"
#endif  // BUILDFLAG(ENABLE_FEED_IN_CHROME)
#else   // defined(OS_ANDROID)
#include "chrome/browser/gcm/gcm_product_util.h"
#include "chrome/browser/metrics/tab_stats_tracker.h"
#include "chrome/browser/search/instant_service.h"
#include "chrome/browser/search/search_suggest/search_suggest_service.h"
#include "chrome/browser/signin/signin_promo.h"
#include "chrome/browser/ui/startup/startup_browser_creator.h"
#include "chrome/browser/ui/webui/foreign_session_handler.h"
#include "chrome/browser/ui/webui/md_history_ui.h"
#include "chrome/browser/ui/webui/settings/md_settings_ui.h"
#include "chrome/browser/upgrade_detector/upgrade_detector.h"
#endif  // defined(OS_ANDROID)

#if defined(OS_CHROMEOS)
#include "chrome/browser/chromeos/app_mode/arc/arc_kiosk_app_manager.h"
#include "chrome/browser/chromeos/app_mode/kiosk_app_manager.h"
#include "chrome/browser/chromeos/arc/arc_session_manager.h"
#include "chrome/browser/chromeos/arc/policy/arc_policy_bridge.h"
#include "chrome/browser/chromeos/child_accounts/screen_time_controller.h"
#include "chrome/browser/chromeos/crostini/crostini_pref_names.h"
#include "chrome/browser/chromeos/crostini/crostini_registry_service.h"
#include "chrome/browser/chromeos/cryptauth/cryptauth_device_id_provider_impl.h"
#include "chrome/browser/chromeos/customization/customization_document.h"
#include "chrome/browser/chromeos/extensions/echo_private_api.h"
#include "chrome/browser/chromeos/file_system_provider/registry.h"
#include "chrome/browser/chromeos/first_run/first_run.h"
#include "chrome/browser/chromeos/lock_screen_apps/state_controller.h"
#include "chrome/browser/chromeos/login/demo_mode/demo_mode_detector.h"
#include "chrome/browser/chromeos/login/demo_mode/demo_mode_resources_remover.h"
#include "chrome/browser/chromeos/login/demo_mode/demo_session.h"
#include "chrome/browser/chromeos/login/demo_mode/demo_setup_controller.h"
#include "chrome/browser/chromeos/login/quick_unlock/fingerprint_storage.h"
#include "chrome/browser/chromeos/login/quick_unlock/pin_storage_prefs.h"
#include "chrome/browser/chromeos/login/quick_unlock/quick_unlock_utils.h"
#include "chrome/browser/chromeos/login/saml/saml_offline_signin_limiter.h"
#include "chrome/browser/chromeos/login/screens/reset_screen.h"
#include "chrome/browser/chromeos/login/session/user_session_manager.h"
#include "chrome/browser/chromeos/login/startup_utils.h"
#include "chrome/browser/chromeos/login/users/avatar/user_image_manager.h"
#include "chrome/browser/chromeos/login/users/avatar/user_image_sync_observer.h"
#include "chrome/browser/chromeos/login/users/chrome_user_manager_impl.h"
#include "chrome/browser/chromeos/login/users/multi_profile_user_controller.h"
#include "chrome/browser/chromeos/net/network_throttling_observer.h"
#include "chrome/browser/chromeos/platform_keys/key_permissions.h"
#include "chrome/browser/chromeos/plugin_vm/plugin_vm_pref_names.h"
#include "chrome/browser/chromeos/policy/app_install_event_log_manager_wrapper.h"
#include "chrome/browser/chromeos/policy/app_install_event_logger.h"
#include "chrome/browser/chromeos/policy/auto_enrollment_client_impl.h"
#include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
#include "chrome/browser/chromeos/policy/device_cloud_policy_manager_chromeos.h"
#include "chrome/browser/chromeos/policy/device_status_collector.h"
#include "chrome/browser/chromeos/policy/dm_token_storage.h"
#include "chrome/browser/chromeos/policy/policy_cert_service_factory.h"
#include "chrome/browser/chromeos/power/auto_screen_brightness/metrics_reporter.h"
#include "chrome/browser/chromeos/power/power_metrics_reporter.h"
#include "chrome/browser/chromeos/preferences.h"
#include "chrome/browser/chromeos/printing/cups_printers_manager.h"
#include "chrome/browser/chromeos/printing/synced_printers_manager.h"
#include "chrome/browser/chromeos/resource_reporter/resource_reporter.h"
#include "chrome/browser/chromeos/settings/device_oauth2_token_service.h"
#include "chrome/browser/chromeos/settings/device_settings_cache.h"
#include "chrome/browser/chromeos/system/automatic_reboot_manager.h"
#include "chrome/browser/chromeos/system/input_device_settings.h"
#include "chrome/browser/extensions/api/enterprise_platform_keys_private/enterprise_platform_keys_private_api.h"
#include "chrome/browser/extensions/extension_assets_manager_chromeos.h"
#include "chrome/browser/media/protected_media_identifier_permission_context.h"
#include "chrome/browser/metrics/chromeos_metrics_provider.h"
#include "chrome/browser/ui/ash/chrome_launcher_prefs.h"
#include "chrome/browser/ui/webui/chromeos/login/enable_debugging_screen_handler.h"
#include "chrome/browser/ui/webui/chromeos/login/hid_detection_screen_handler.h"
#include "chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h"
#include "chromeos/audio/audio_devices_pref_handler_impl.h"
#include "chromeos/constants/chromeos_switches.h"
#include "chromeos/network/fast_transition_observer.h"
#include "chromeos/network/proxy/proxy_config_handler.h"
#include "chromeos/services/multidevice_setup/multidevice_setup_service.h"
#include "chromeos/timezone/timezone_resolver.h"
#include "components/arc/arc_prefs.h"
#include "components/invalidation/impl/invalidator_storage.h"
#include "components/onc/onc_pref_names.h"
#include "components/quirks/quirks_manager.h"
#include "extensions/browser/api/lock_screen_data/lock_screen_item_storage.h"
#else
#include "chrome/browser/extensions/default_apps.h"
#endif

#if defined(OS_CHROMEOS) && BUILDFLAG(ENABLE_APP_LIST)
#include "chrome/browser/chromeos/apps/apk_web_app_service.h"
#include "chrome/browser/ui/app_list/arc/arc_app_list_prefs.h"
#endif

#if defined(OS_MACOSX)
#include "chrome/browser/ui/cocoa/apps/quit_with_apps_controller_mac.h"
#include "chrome/browser/ui/cocoa/confirm_quit.h"
#include "components/os_crypt/os_crypt.h"
#endif

#if defined(OS_WIN)
#include "chrome/browser/component_updater/sw_reporter_installer_win.h"
#if defined(GOOGLE_CHROME_BUILD)
#include "chrome/browser/conflicts/incompatible_applications_updater_win.h"
#include "chrome/browser/conflicts/module_database_win.h"
#include "chrome/browser/conflicts/third_party_conflicts_manager_win.h"
#endif  // defined(GOOGLE_CHROME_BUILD)
#include "chrome/browser/safe_browsing/chrome_cleaner/settings_resetter_win.h"
#include "chrome/browser/safe_browsing/settings_reset_prompt/settings_reset_prompt_prefs_manager.h"
#endif

#if defined(OS_WIN) || defined(OS_MACOSX) || \
    (defined(OS_LINUX) && !defined(OS_CHROMEOS))
#include "chrome/browser/browser_switcher/browser_switcher_prefs.h"
#endif

#if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
#include "chrome/browser/ui/startup/default_browser_prompt.h"
#endif

#if defined(TOOLKIT_VIEWS)
#include "chrome/browser/ui/browser_view_prefs.h"
#endif

#if !defined(OS_ANDROID)
#include "chrome/browser/media/unified_autoplay_config.h"
#include "components/ntp_tiles/custom_links_manager_impl.h"
#endif

namespace {

#if defined(OS_ANDROID)
// Deprecated 4/2018.
const char kDismissedPhysicalWebPageSuggestions[] =
    "ntp_suggestions.physical_web.dismissed_ids";
// Deprecated 5/2018.
const char kDismissedRecentOfflineTabSuggestions[] =
    "ntp_suggestions.offline_pages.recent_tabs.dismissed_ids";
#else
// Deprecated 1/2018.
const char kShowFirstRunBubbleOption[] = "show-first-run-bubble-option";
#endif  // defined(OS_ANDROID)

#if defined(OS_WIN)
// Deprecated 6/2018.
const char kResetHasSeenWin10PromoPage[] =
    "browser.reset_has_seen_win10_promo_page";
#endif

// Deprecated 8/2018.
const char kDnsPrefetchingStartupList[] = "dns_prefetching.startup_list";
const char kDnsPrefetchingHostReferralList[] =
    "dns_prefetching.host_referral_list";

// Deprecated 9/2018
const char kGeolocationAccessToken[] = "geolocation.access_token";
const char kGoogleServicesPasswordHash[] = "google.services.password_hash";
const char kModuleConflictBubbleShown[] = "module_conflict.bubble_shown";
const char kOptionsWindowLastTabIndex[] = "options_window.last_tab_index";
const char kTrustedDownloadSources[] = "trusted_download_sources";
#if defined(OS_WIN)
const char kLastWelcomedOSVersion[] = "browser.last_welcomed_os_version";
#endif
const char kSupervisedUserCreationAllowed[] =
    "profile.managed_user_creation_allowed";

// Deprecated 10/2018
const char kReverseAutologinEnabled[] = "reverse_autologin.enabled";

// Deprecated 11/2018.
const char kNetworkQualities[] = "net.network_qualities";
const char kForceSessionSync[] = "settings.history_recorded";
const char kOnboardDuringNUX[] = "browser.onboard_during_nux";
const char kNuxOnboardGroup[] = "browser.onboard_group";
// This pref is particularly large, taking up 15+% of the prefs file, so should
// perhaps be kept around longer than the others.
const char kHttpServerProperties[] = "net.http_server_properties";

// Register prefs used only for migration (clearing or moving to a new key).
void RegisterProfilePrefsForMigration(
    user_prefs::PrefRegistrySyncable* registry) {

#if defined(OS_ANDROID)
  registry->RegisterListPref(kDismissedPhysicalWebPageSuggestions);
  registry->RegisterListPref(kDismissedRecentOfflineTabSuggestions);
#endif

  registry->RegisterListPref(kDnsPrefetchingStartupList);
  registry->RegisterListPref(kDnsPrefetchingHostReferralList);

  registry->RegisterStringPref(kGeolocationAccessToken, std::string());
  registry->RegisterStringPref(kGoogleServicesPasswordHash, std::string());
  registry->RegisterIntegerPref(kModuleConflictBubbleShown, 0);
  registry->RegisterIntegerPref(kOptionsWindowLastTabIndex, 0);
  registry->RegisterStringPref(kTrustedDownloadSources, std::string());
  registry->RegisterBooleanPref(kSupervisedUserCreationAllowed, true);

  registry->RegisterBooleanPref(kReverseAutologinEnabled, true);

  registry->RegisterDictionaryPref(kNetworkQualities, PrefRegistry::LOSSY_PREF);
  registry->RegisterBooleanPref(kForceSessionSync, false);
  registry->RegisterBooleanPref(kOnboardDuringNUX, false);
  registry->RegisterIntegerPref(kNuxOnboardGroup, 0);
  registry->RegisterDictionaryPref(kHttpServerProperties,
                                   PrefRegistry::LOSSY_PREF);
}

}  // namespace

void RegisterLocalState(PrefRegistrySimple* registry) {
  // Please keep this list alphabetized.
  browser_shutdown::RegisterPrefs(registry);
  BrowserProcessImpl::RegisterPrefs(registry);
  ChromeContentBrowserClient::RegisterLocalStatePrefs(registry);
  ChromeMetricsServiceClient::RegisterPrefs(registry);
  ChromeTracingDelegate::RegisterPrefs(registry);
  component_updater::RegisterPrefs(registry);
  ExternalProtocolHandler::RegisterPrefs(registry);
  flags_ui::PrefServiceFlagsStorage::RegisterPrefs(registry);
  GpuModeManager::RegisterPrefs(registry);
  IntranetRedirectDetector::RegisterPrefs(registry);
  IOThread::RegisterPrefs(registry);
  language::GeoLanguageProvider::RegisterLocalStatePrefs(registry);
  network_time::NetworkTimeTracker::RegisterPrefs(registry);
  OriginTrialPrefs::RegisterPrefs(registry);
  password_manager::PasswordManager::RegisterLocalPrefs(registry);
  PrefProxyConfigTrackerImpl::RegisterPrefs(registry);
  ProfileInfoCache::RegisterPrefs(registry);
  profiles::RegisterPrefs(registry);
  rappor::RapporServiceImpl::RegisterPrefs(registry);
  RegisterScreenshotPrefs(registry);
  safe_browsing::RegisterLocalStatePrefs(registry);
  sessions::SessionIdGenerator::RegisterPrefs(registry);
  SigninManagerFactory::RegisterPrefs(registry);
  SSLConfigServiceManager::RegisterPrefs(registry);
  startup_metric_utils::RegisterPrefs(registry);
  subresource_filter::IndexedRulesetVersion::RegisterPrefs(registry);
  SystemNetworkContextManager::RegisterPrefs(registry);
  update_client::RegisterPrefs(registry);
  variations::VariationsService::RegisterPrefs(registry);

  policy::BrowserPolicyConnector::RegisterPrefs(registry);
  policy::PolicyStatisticsCollector::RegisterPrefs(registry);
  policy::RegisterPrefs(registry);

#if BUILDFLAG(ENABLE_BACKGROUND_MODE)
  BackgroundModeManager::RegisterPrefs(registry);
#endif

#if BUILDFLAG(ENABLE_EXTENSIONS) and defined(OS_CHROMEOS)
  chromeos::EasyUnlockService::RegisterPrefs(registry);
#endif

#if BUILDFLAG(ENABLE_PLUGINS)
  PluginsResourceService::RegisterPrefs(registry);
#endif

#if defined(OS_ANDROID)
  ::android::RegisterPrefs(registry);
#else
  media_router::RegisterLocalStatePrefs(registry);
  // The native GCM is used on Android instead.
  gcm::GCMChannelStatusSyncer::RegisterPrefs(registry);
  gcm::RegisterPrefs(registry);
  metrics::TabStatsTracker::RegisterPrefs(registry);
  RegisterBrowserPrefs(registry);
  StartupBrowserCreator::RegisterLocalStatePrefs(registry);
  task_manager::TaskManagerInterface::RegisterPrefs(registry);
  UpgradeDetector::RegisterPrefs(registry);
  // Obsolete. See MigrateObsoleteBrowserPrefs().
  registry->RegisterIntegerPref(kShowFirstRunBubbleOption, 0);
#if !defined(OS_CHROMEOS)
  RegisterDefaultBrowserPromptPrefs(registry);
#endif  // !defined(OS_CHROMEOS)
#endif  // !defined(OS_ANDROID)

#if defined(OS_CHROMEOS)
  ChromeOSMetricsProvider::RegisterPrefs(registry);
  chromeos::ArcKioskAppManager::RegisterPrefs(registry);
  chromeos::AudioDevicesPrefHandlerImpl::RegisterPrefs(registry);
  chromeos::ChromeUserManagerImpl::RegisterPrefs(registry);
  chromeos::DemoModeDetector::RegisterPrefs(registry);
  chromeos::DemoModeResourcesRemover::RegisterLocalStatePrefs(registry);
  chromeos::DemoSession::RegisterLocalStatePrefs(registry);
  chromeos::DemoSetupController::RegisterLocalStatePrefs(registry);
  chromeos::DeviceOAuth2TokenService::RegisterPrefs(registry);
  chromeos::device_settings_cache::RegisterPrefs(registry);
  chromeos::echo_offer::RegisterPrefs(registry);
  chromeos::EnableDebuggingScreenHandler::RegisterPrefs(registry);
  chromeos::FastTransitionObserver::RegisterPrefs(registry);
  chromeos::HIDDetectionScreenHandler::RegisterPrefs(registry);
  chromeos::KioskAppManager::RegisterPrefs(registry);
  chromeos::language_prefs::RegisterPrefs(registry);
  chromeos::MultiProfileUserController::RegisterPrefs(registry);
  chromeos::NetworkThrottlingObserver::RegisterPrefs(registry);
  chromeos::PowerMetricsReporter::RegisterLocalStatePrefs(registry);
  chromeos::power::auto_screen_brightness::MetricsReporter::
      RegisterLocalStatePrefs(registry);
  chromeos::Preferences::RegisterPrefs(registry);
  chromeos::ResetScreen::RegisterPrefs(registry);
  chromeos::ResourceReporter::RegisterPrefs(registry);
  chromeos::ServicesCustomizationDocument::RegisterPrefs(registry);
  chromeos::SigninScreenHandler::RegisterPrefs(registry);
  chromeos::StartupUtils::RegisterPrefs(registry);
  chromeos::system::AutomaticRebootManager::RegisterPrefs(registry);
  chromeos::TimeZoneResolver::RegisterPrefs(registry);
  chromeos::UserImageManager::RegisterPrefs(registry);
  chromeos::UserSessionManager::RegisterPrefs(registry);
  component_updater::MetadataTable::RegisterPrefs(registry);
  cryptauth::CryptAuthDeviceIdProviderImpl::RegisterLocalPrefs(registry);
  extensions::ExtensionAssetsManagerChromeOS::RegisterPrefs(registry);
  extensions::lock_screen_data::LockScreenItemStorage::RegisterLocalState(
      registry);
  invalidation::InvalidatorStorage::RegisterPrefs(registry);
  ::onc::RegisterPrefs(registry);
  policy::AutoEnrollmentClientImpl::RegisterPrefs(registry);
  policy::BrowserPolicyConnectorChromeOS::RegisterPrefs(registry);
  policy::DeviceCloudPolicyManagerChromeOS::RegisterPrefs(registry);
  policy::DeviceStatusCollector::RegisterPrefs(registry);
  policy::DMTokenStorage::RegisterPrefs(registry);
  policy::PolicyCertServiceFactory::RegisterPrefs(registry);
  quirks::QuirksManager::RegisterPrefs(registry);
#endif

#if defined(OS_MACOSX)
  confirm_quit::RegisterLocalState(registry);
  OSCrypt::RegisterLocalPrefs(registry);
  QuitWithAppsController::RegisterPrefs(registry);
#endif

#if defined(OS_WIN)
  component_updater::RegisterPrefsForSwReporter(registry);
#if defined(GOOGLE_CHROME_BUILD)
  IncompatibleApplicationsUpdater::RegisterLocalStatePrefs(registry);
  ModuleDatabase::RegisterLocalStatePrefs(registry);
  ThirdPartyConflictsManager::RegisterLocalStatePrefs(registry);
#endif  // defined(GOOGLE_CHROME_BUILD)

  registry->RegisterBooleanPref(kResetHasSeenWin10PromoPage, false);
  registry->RegisterStringPref(kLastWelcomedOSVersion, std::string());
#endif

  // Obsolete. See MigrateObsoleteBrowserPrefs().
  registry->RegisterIntegerPref(metrics::prefs::kStabilityExecutionPhase, 0);

#if defined(TOOLKIT_VIEWS)
  RegisterBrowserViewLocalPrefs(registry);
#endif
}

// Register prefs applicable to all profiles.
void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry) {
  TRACE_EVENT0("browser", "chrome::RegisterProfilePrefs");
  SCOPED_UMA_HISTOGRAM_TIMER("Settings.RegisterProfilePrefsTime");
  // User prefs. Please keep this list alphabetized.
  accessibility_prefs::RegisterAccessibilityLabelsProfilePrefs(registry);
  AccessibilityUIMessageHandler::RegisterProfilePrefs(registry);
  autofill::prefs::RegisterProfilePrefs(registry);
  browsing_data::prefs::RegisterBrowserUserPrefs(registry);
  certificate_transparency::prefs::RegisterPrefs(registry);
  ChromeAuthenticatorRequestDelegate::RegisterProfilePrefs(registry);
  ChromeContentBrowserClient::RegisterProfilePrefs(registry);
  ChromeSSLHostStateDelegate::RegisterProfilePrefs(registry);
  ChromeVersionService::RegisterProfilePrefs(registry);
  chrome_browser_net::NetErrorTabHelper::RegisterProfilePrefs(registry);
  chrome_browser_net::RegisterPredictionOptionsProfilePrefs(registry);
  chrome_prefs::RegisterProfilePrefs(registry);
  dom_distiller::DistilledPagePrefs::RegisterProfilePrefs(registry);
  DocumentProvider::RegisterProfilePrefs(registry);
  DownloadPrefs::RegisterProfilePrefs(registry);
  HostContentSettingsMap::RegisterProfilePrefs(registry);
  image_fetcher::ImageCache::RegisterProfilePrefs(registry);
  ImportantSitesUtil::RegisterProfilePrefs(registry);
  IncognitoModePrefs::RegisterProfilePrefs(registry);
  MediaCaptureDevicesDispatcher::RegisterProfilePrefs(registry);
  MediaDeviceIDSalt::RegisterProfilePrefs(registry);
  MediaEngagementService::RegisterProfilePrefs(registry);
  MediaStorageIdSalt::RegisterProfilePrefs(registry);
  MediaStreamDevicesController::RegisterProfilePrefs(registry);
  NavigationCorrectionTabObserver::RegisterProfilePrefs(registry);
  NotifierStateTracker::RegisterProfilePrefs(registry);
  ntp_snippets::ContentSuggestionsService::RegisterProfilePrefs(registry);
  ntp_snippets::RemoteSuggestionsProviderImpl::RegisterProfilePrefs(registry);
  ntp_snippets::RemoteSuggestionsSchedulerImpl::RegisterProfilePrefs(registry);
  ntp_snippets::RequestThrottler::RegisterProfilePrefs(registry);
  ntp_snippets::UserClassifier::RegisterProfilePrefs(registry);
  ntp_tiles::MostVisitedSites::RegisterProfilePrefs(registry);
  password_bubble_experiment::RegisterPrefs(registry);
  password_manager::PasswordManager::RegisterProfilePrefs(registry);
  payments::RegisterProfilePrefs(registry);
  PlatformNotificationServiceImpl::RegisterProfilePrefs(registry);
  policy::DeveloperToolsPolicyHandler::RegisterProfilePrefs(registry);
  policy::URLBlacklistManager::RegisterProfilePrefs(registry);
  PrefProxyConfigTrackerImpl::RegisterProfilePrefs(registry);
  PrefsTabHelper::RegisterProfilePrefs(registry);
  PreviewsLitePageDecider::RegisterProfilePrefs(registry);
  Profile::RegisterProfilePrefs(registry);
  ProfileImpl::RegisterProfilePrefs(registry);
  ProfileNetworkContextService::RegisterProfilePrefs(registry);
  ProtocolHandlerRegistry::RegisterProfilePrefs(registry);
  PushMessagingAppIdentifier::RegisterProfilePrefs(registry);
  RegisterBrowserUserPrefs(registry);
  safe_browsing::RegisterProfilePrefs(registry);
  secure_origin_whitelist::RegisterProfilePrefs(registry);
  SafeBrowsingTriggeredPopupBlocker::RegisterProfilePrefs(registry);
  SessionStartupPref::RegisterProfilePrefs(registry);
  sync_sessions::SessionSyncPrefs::RegisterProfilePrefs(registry);
  syncer::SyncPrefs::RegisterProfilePrefs(registry);
  syncer::PerUserTopicRegistrationManager::RegisterProfilePrefs(registry);
  syncer::InvalidatorRegistrarWithMemory::RegisterProfilePrefs(registry);
  TemplateURLPrepopulateData::RegisterProfilePrefs(registry);
  translate::TranslatePrefs::RegisterProfilePrefs(registry);
  ZeroSuggestProvider::RegisterProfilePrefs(registry);

#if BUILDFLAG(ENABLE_EXTENSIONS)
  ExtensionWebUI::RegisterProfilePrefs(registry);
  RegisterAnimationPolicyPrefs(registry);
  ToolbarActionsBar::RegisterProfilePrefs(registry);
  extensions::api::CryptotokenRegisterProfilePrefs(registry);
  extensions::ActivityLog::RegisterProfilePrefs(registry);
  extensions::AudioAPI::RegisterUserPrefs(registry);
  extensions::ExtensionPrefs::RegisterProfilePrefs(registry);
  extensions::ExtensionsUI::RegisterProfilePrefs(registry);
  extensions::launch_util::RegisterProfilePrefs(registry);
  extensions::NtpOverriddenBubbleDelegate::RegisterPrefs(registry);
  extensions::RuntimeAPI::RegisterPrefs(registry);
  update_client::RegisterProfilePrefs(registry);
  web_app::WebAppProvider::RegisterProfilePrefs(registry);
#endif  // BUILDFLAG(ENABLE_EXTENSIONS)

#if BUILDFLAG(ENABLE_DESKTOP_IN_PRODUCT_HELP)
  feature_engagement::SessionDurationUpdater::RegisterProfilePrefs(registry);
#endif

#if BUILDFLAG(ENABLE_PLUGINS)
  PluginInfoHostImpl::RegisterUserPrefs(registry);
#endif

#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
  printing::PolicySettings::RegisterProfilePrefs(registry);
  printing::StickySettings::RegisterProfilePrefs(registry);
#endif

#if BUILDFLAG(ENABLE_SERVICE_DISCOVERY)
  LocalDiscoveryUI::RegisterProfilePrefs(registry);
#endif

#if BUILDFLAG(ENABLE_SUPERVISED_USERS)
  ChildAccountService::RegisterProfilePrefs(registry);
  SupervisedUserService::RegisterProfilePrefs(registry);
  SupervisedUserWhitelistService::RegisterProfilePrefs(registry);
#endif

#if defined(OS_ANDROID)
  ntp_tiles::PopularSitesImpl::RegisterProfilePrefs(registry);
  variations::VariationsService::RegisterProfilePrefs(registry);
  GeolocationPermissionContextAndroid::RegisterProfilePrefs(registry);
  PartnerBookmarksShim::RegisterProfilePrefs(registry);
  RecentTabsPagePrefs::RegisterProfilePrefs(registry);
  usage_stats::UsageStatsBridge::RegisterProfilePrefs(registry);
#if BUILDFLAG(ENABLE_FEED_IN_CHROME)
  feed::FeedSchedulerHost::RegisterProfilePrefs(registry);
  feed::RefreshThrottler::RegisterProfilePrefs(registry);
  feed::UserClassifier::RegisterProfilePrefs(registry);
#endif  // BUILDFLAG(ENABLE_FEED_IN_CHROME)
#else
  AppShortcutManager::RegisterProfilePrefs(registry);
  DeviceIDFetcher::RegisterProfilePrefs(registry);
  DevToolsWindow::RegisterProfilePrefs(registry);
#if BUILDFLAG(ENABLE_APP_LIST)
  app_list::AppListSyncableService::RegisterProfilePrefs(registry);
#endif  // BUILDFLAG(ENABLE_APP_LIST)
  extensions::CommandService::RegisterProfilePrefs(registry);
  extensions::TabsCaptureVisibleTabFunction::RegisterProfilePrefs(registry);
  NewTabUI::RegisterProfilePrefs(registry);
  PepperFlashSettingsManager::RegisterProfilePrefs(registry);
  PinnedTabCodec::RegisterProfilePrefs(registry);
  signin::RegisterProfilePrefs(registry);
#endif

#if defined(OS_ANDROID)
  cdm::MediaDrmStorageImpl::RegisterProfilePrefs(registry);
  contextual_suggestions::ContextualSuggestionsPrefs::RegisterProfilePrefs(
      registry);
  ContentSuggestionsNotifierService::RegisterProfilePrefs(registry);
  DownloadSuggestionsProvider::RegisterProfilePrefs(registry);
  explore_sites::HistoryStatisticsReporter::RegisterPrefs(registry);
  ntp_snippets::BreakingNewsGCMAppHandler::RegisterProfilePrefs(registry);
  ntp_snippets::ClickBasedCategoryRanker::RegisterProfilePrefs(registry);
  ntp_snippets::SubscriptionManagerImpl::RegisterProfilePrefs(registry);
  OomInterventionDecider::RegisterProfilePrefs(registry);
#endif  // defined(OS_ANDROID)

#if !defined(OS_ANDROID)
  browser_sync::ForeignSessionHandler::RegisterProfilePrefs(registry);
  first_run::RegisterProfilePrefs(registry);
  InstantService::RegisterProfilePrefs(registry);
  SearchSuggestService::RegisterProfilePrefs(registry);
  gcm::GCMChannelStatusSyncer::RegisterProfilePrefs(registry);
  gcm::RegisterProfilePrefs(registry);
  media_router::RegisterProfilePrefs(registry);
  ntp_tiles::CustomLinksManagerImpl::RegisterProfilePrefs(registry);
  StartupBrowserCreator::RegisterProfilePrefs(registry);
#endif

#if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
  default_apps::RegisterProfilePrefs(registry);
#endif

#if defined(OS_CHROMEOS)
  arc::prefs::RegisterProfilePrefs(registry);
  chromeos::CupsPrintersManager::RegisterProfilePrefs(registry);
  chromeos::first_run::RegisterProfilePrefs(registry);
  chromeos::file_system_provider::RegisterProfilePrefs(registry);
  chromeos::KeyPermissions::RegisterProfilePrefs(registry);
  chromeos::multidevice_setup::MultiDeviceSetupService::RegisterProfilePrefs(
      registry);
  chromeos::MultiProfileUserController::RegisterProfilePrefs(registry);
  chromeos::quick_unlock::FingerprintStorage::RegisterProfilePrefs(registry);
  chromeos::quick_unlock::PinStoragePrefs::RegisterProfilePrefs(registry);
  chromeos::Preferences::RegisterProfilePrefs(registry);
  chromeos::SyncedPrintersManager::RegisterProfilePrefs(registry);
  chromeos::quick_unlock::RegisterProfilePrefs(registry);
  chromeos::SAMLOfflineSigninLimiter::RegisterProfilePrefs(registry);
  chromeos::ScreenTimeController::RegisterProfilePrefs(registry);
  chromeos::ServicesCustomizationDocument::RegisterProfilePrefs(registry);
  chromeos::UserImageSyncObserver::RegisterProfilePrefs(registry);
  crostini::prefs::RegisterProfilePrefs(registry);
  extensions::EPKPChallengeUserKey::RegisterProfilePrefs(registry);
  flags_ui::PrefServiceFlagsStorage::RegisterProfilePrefs(registry);
  lock_screen_apps::StateController::RegisterProfilePrefs(registry);
  plugin_vm::prefs::RegisterProfilePrefs(registry);
  policy::AppInstallEventLogger::RegisterProfilePrefs(registry);
  policy::AppInstallEventLogManagerWrapper::RegisterProfilePrefs(registry);
  policy::DeviceStatusCollector::RegisterProfilePrefs(registry);
  ::onc::RegisterProfilePrefs(registry);
#endif

#if defined(OS_CHROMEOS) && BUILDFLAG(ENABLE_APP_LIST)
  ArcAppListPrefs::RegisterProfilePrefs(registry);
  chromeos::ApkWebAppService::RegisterProfilePrefs(registry);
#endif

#if BUILDFLAG(ENABLE_RLZ)
  ChromeRLZTrackerDelegate::RegisterProfilePrefs(registry);
#endif

#if defined(OS_WIN)
  component_updater::RegisterProfilePrefsForSwReporter(registry);
  NetworkProfileBubble::RegisterProfilePrefs(registry);
  safe_browsing::SettingsResetPromptPrefsManager::RegisterProfilePrefs(
      registry);
  safe_browsing::PostCleanupSettingsResetter::RegisterProfilePrefs(registry);
#endif

#if defined(OS_WIN) || defined(OS_MACOSX) || \
    (defined(OS_LINUX) && !defined(OS_CHROMEOS))
  browser_switcher::BrowserSwitcherPrefs::RegisterProfilePrefs(registry);
#endif

#if defined(TOOLKIT_VIEWS)
  accessibility_prefs::RegisterInvertBubbleUserPrefs(registry);
  RegisterBrowserViewProfilePrefs(registry);
#endif

#if defined(OS_CHROMEOS)
  RegisterChromeLauncherUserPrefs(registry);
#endif

#if !defined(OS_ANDROID)
  MdHistoryUI::RegisterProfilePrefs(registry);
  settings::MdSettingsUI::RegisterProfilePrefs(registry);
#endif

#if BUILDFLAG(ENABLE_OFFLINE_PAGES)
  offline_pages::OfflineMetricsCollectorImpl::RegisterPrefs(registry);
  offline_pages::prefetch_prefs::RegisterPrefs(registry);
#endif

#if defined(OS_ANDROID)
  NotificationChannelsProviderAndroid::RegisterProfilePrefs(registry);
#endif

#if !defined(OS_ANDROID)
  UnifiedAutoplayConfig::RegisterProfilePrefs(registry);
#endif

#if !defined(OS_CHROMEOS) && BUILDFLAG(ENABLE_EXTENSIONS)
  extensions::enterprise_reporting::RegisterProfilePrefs(registry);
#endif

  RegisterProfilePrefsForMigration(registry);
}

void RegisterUserProfilePrefs(user_prefs::PrefRegistrySyncable* registry) {
  RegisterProfilePrefs(registry);

#if defined(OS_ANDROID)
  ::android::RegisterUserProfilePrefs(registry);
#endif
}

void RegisterScreenshotPrefs(PrefRegistrySimple* registry) {
  registry->RegisterBooleanPref(prefs::kDisableScreenshots, false);
}

#if defined(OS_CHROMEOS)
void RegisterLoginProfilePrefs(user_prefs::PrefRegistrySyncable* registry) {
  RegisterProfilePrefs(registry);
}
#endif

// This method should be periodically pruned of year+ old migrations.
void MigrateObsoleteBrowserPrefs(Profile* profile, PrefService* local_state) {
  // Added 12/2018.
  local_state->ClearPref(metrics::prefs::kStabilityExecutionPhase);

#if defined(OS_ANDROID)
  // Added 9/2018
  local_state->ClearPref(
      metrics::prefs::kStabilityCrashCountWithoutGmsCoreUpdateObsolete);
#else
  // Added 1/2018.
  local_state->ClearPref(kShowFirstRunBubbleOption);
#endif  // defined(OS_ANDROID)

#if defined(OS_WIN) && defined(GOOGLE_CHROME_BUILD)
  // Added 5/2018.
  local_state->ClearPref(prefs::kProblematicPrograms);
#endif

#if defined(OS_WIN)
  // Added 6/2018.
  local_state->ClearPref(kResetHasSeenWin10PromoPage);

  // Added 9/2018
  local_state->ClearPref(kLastWelcomedOSVersion);
#endif
#if defined(OS_CHROMEOS)
  // Added 12/2018
  local_state->ClearPref(prefs::kCarrierDealPromoShown);
#endif
}

// This method should be periodically pruned of year+ old migrations.
void MigrateObsoleteProfilePrefs(Profile* profile) {
  PrefService* profile_prefs = profile->GetPrefs();

#if defined(OS_ANDROID)
  // Added 4/2018
  profile_prefs->ClearPref(kDismissedPhysicalWebPageSuggestions);

  // Added 5/2018
  profile_prefs->ClearPref(kDismissedRecentOfflineTabSuggestions);
#endif  // defined(OS_ANDROID)

  // Added 8/2018.
  autofill::prefs::MigrateDeprecatedAutofillPrefs(profile_prefs);

  // Added 8/2018
  profile_prefs->ClearPref(kDnsPrefetchingStartupList);
  profile_prefs->ClearPref(kDnsPrefetchingHostReferralList);

  // Added 9/2018
  profile_prefs->ClearPref(kGeolocationAccessToken);
  profile_prefs->ClearPref(kGoogleServicesPasswordHash);
  profile_prefs->ClearPref(kModuleConflictBubbleShown);
  profile_prefs->ClearPref(kOptionsWindowLastTabIndex);
  profile_prefs->ClearPref(kTrustedDownloadSources);
  profile_prefs->ClearPref(kSupervisedUserCreationAllowed);

  // Added 10/2018
  profile_prefs->ClearPref(kReverseAutologinEnabled);

  // Added 11/2018.
  profile_prefs->ClearPref(kNetworkQualities);
  profile_prefs->ClearPref(kForceSessionSync);
  profile_prefs->ClearPref(kOnboardDuringNUX);
  profile_prefs->ClearPref(kNuxOnboardGroup);
  profile_prefs->ClearPref(kHttpServerProperties);

#if defined(OS_CHROMEOS)
  // Added 12/2018.
  profile_prefs->ClearPref(prefs::kDataSaverPromptsShown);
#endif
}