[iOS] Upstream preference names used by iOS

ios/chrome/browser/pref_names.cc

 // Copyright 2014 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 "ios/chrome/browser/pref_names.h"
 
 namespace ios {
 namespace prefs {
 
 // Preferences in ios::prefs:: must have the same value as the corresponding
 // preference on desktop.
 // These preferences must not be registered by //ios code.
 // See chrome/common/pref_names.cc for a detailed description of each
 // preference.
 
 const char kAcceptLanguages[] = "intl.accept_languages";
 
 }  // namespace prefs
 }  // namespace ios
 
 namespace prefs {
 
 // *************** CHROME BROWSER STATE PREFS ***************
 // These are attached to the user Chrome browser state.
 
+// String indicating the Contextual Search enabled state.
+// "false" - opt-out (disabled)
+// "" (empty string) - undecided
+// "true" - opt-in (enabled)
+const char kContextualSearchEnabled[] = "search.contextual_search_enabled";
+
 // Preference that keep information about where to create a new bookmark.
 const char kIosBookmarkFolderDefault[] = "ios.bookmark.default_folder";
 
 // Preference that hold a boolean indicating if the user has already dismissed
 // the bookmark promo dialog.
 const char kIosBookmarkPromoAlreadySeen[] = "ios.bookmark.promo_already_seen";
 
+// Whether Chrome should attempt to hand off the current URL to other Apple
+// devices that share an iCloud account.
+const char kIosHandoffToOtherDevices[] = "ios.handoff_to_other_devices";
+
+// Preference that hold a boolean indicating whether metrics reporting should
+// be limited to wifi (when enabled).
+const char kMetricsReportingWifiOnly[] =
+    "ios.user_experience_metrics.wifi_only";
+
+// Preference that hold a boolean indicating whether network prediction should
+// be limited to wifi (when enabled).
+const char kNetworkPredictionWifiOnly[] = "ios.dns_prefetching.wifi_only";
+
+// Which bookmarks folder should be visible on the new tab page v4.
+const char kNtpShownBookmarksFolder[] = "ntp.shown_bookmarks_folder";
+
 // The preferred SSO user for wallet payments.
 const char kPaymentsPreferredUserId[] = "ios.payments.preferred_user_id";
 
 // True if the memory debugging tools should be visible.
 extern const char kShowMemoryDebuggingTools[] =
     "ios.memory.show_debugging_tools";
 
+// User preferred speech input language for voice search.
+const char kVoiceSearchLocale[] = "ios.speechinput.voicesearch_locale";
+
+// Boolean which indicates if TTS after voice search is enabled.
+extern const char kVoiceSearchTTS[] = "ios.speechinput.voicesearch_tts";
+
+// List which contains the last known list of accounts.
+extern const char kSigninLastAccounts[] = "ios.signin.last_accounts";
+
+// String which contains the user id of the user signed in with shared
+// authentication.
+extern const char kSigninSharedAuthenticationUserId[] =
+    "ios.signin.shared_authentication_user_id";
+
+// Boolean which indicates if user should be prompted to sign in again
+// when a new tab is created.
+extern const char kSigninShouldPromptForSigninAgain[] =
+    "ios.signin.should_prompt_for_signin_again";
+
+// Integer which indicates whether the user has authorized using geolocation
+// for Omnibox queries or the progress towards soliciting the user's
+// authorization.
+extern const char kOmniboxGeolocationAuthorizationState[] =
+    "ios.omnibox.geolocation_authorization_state";
+
+// String which contains the application version when we last showed the
+// authorization alert.
+extern const char kOmniboxGeolocationLastAuthorizationAlertVersion[] =
+    "ios.omnibox.geolocation_last_authorization_alert_version";
+
+// Number of seconds from 1970 when the doodle expires.
+extern const char kDoodleExpirationTimeInSeconds[] =
+    "ios.doodle.expiration_time.seconds";
+
+// The URL to navigate to when the user taps the doodle.
+extern const char kDoodleHref[] = "ios.doodle.href";
+
+// Number of seconds from 1970 since the last time a doodle was requested.
+extern const char kDoodleLastRequestTimeInSeconds[] =
+    "ios.doodle.last_request_time.seconds";
+
+// The alternative text for the doodle.
+extern const char kDoodleAltText[] = "ios.doodle.alttext";
+
 }  // namespace prefs