Move remaining non-test, non-Chrome-specific Prefs code to base/prefs/.

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/prefs/pref_service.h"
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/api/media_galleries_private/gallery_watch_state_tracker.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"
 
 namespace chrome {
@@ skipping 458 matching lines @@
 }
 
 extensions::ExtensionPrefs*
 MediaGalleriesPreferences::GetExtensionPrefs() const {
   ExtensionService* extension_service =
       extensions::ExtensionSystem::Get(profile_)->extension_service();
   return extension_service->extension_prefs();
 }
 
 }  // namespace chrome