Introduce PrefRegistrySyncable, simplifying PrefServiceSyncable.

chrome/browser/media_gallery/media_galleries_preferences.cc

 // 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/media_gallery/media_galleries_preferences.h"
 
 #include "base/path_service.h"
 #include "base/stl_util.h"
 #include "base/string_number_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/extension_prefs.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/media_gallery/media_file_system_registry.h"
+#include "chrome/browser/prefs/pref_registry_syncable.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/prefs/scoped_user_pref_update.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/system_monitor/media_storage_util.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/permissions/api_permission.h"
 #include "chrome/common/extensions/permissions/media_galleries_permission.h"
 #include "chrome/common/pref_names.h"
 
@@ skipping 408 matching lines @@
 }
 
 // static
 bool MediaGalleriesPreferences::APIHasBeenUsed(Profile* profile) {
   MediaGalleryPrefId current_id =
       profile->GetPrefs()->GetUint64(prefs::kMediaGalleriesUniqueId);
   return current_id != kInvalidMediaGalleryPrefId + 1;
 }
 
 // static
-void MediaGalleriesPreferences::RegisterUserPrefs(PrefServiceSyncable* prefs) {
-  prefs->RegisterListPref(prefs::kMediaGalleriesRememberedGalleries,
-                          PrefServiceSyncable::UNSYNCABLE_PREF);
-  prefs->RegisterUint64Pref(prefs::kMediaGalleriesUniqueId,
-                            kInvalidMediaGalleryPrefId + 1,
-                            PrefServiceSyncable::UNSYNCABLE_PREF);
+void MediaGalleriesPreferences::RegisterUserPrefs(
+    PrefRegistrySyncable* registry) {
+  registry->RegisterListPref(prefs::kMediaGalleriesRememberedGalleries,
+                             PrefRegistrySyncable::UNSYNCABLE_PREF);
+  registry->RegisterUint64Pref(prefs::kMediaGalleriesUniqueId,
+                               kInvalidMediaGalleryPrefId + 1,
+                               PrefRegistrySyncable::UNSYNCABLE_PREF);
 }
 
 extensions::ExtensionPrefs*
 MediaGalleriesPreferences::GetExtensionPrefs() const {
   ExtensionService* extension_service =
       extensions::ExtensionSystem::Get(profile_)->extension_service();
   return extension_service->extension_prefs();
 }
 
 }  // namespace chrome