Revert of Delete base/prefs and update callers to use components.

chromecast/browser/pref_service_helper.h

 // 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.
 //
 // Helper to initialize PrefService for cast shell.
 
 #ifndef CHROMECAST_BROWSER_PREF_SERVICE_HELPER_H_
 #define CHROMECAST_BROWSER_PREF_SERVICE_HELPER_H_
 
 #include <string>
 
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/prefs/pref_service.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/threading/thread_checker.h"
-#include "components/prefs/pref_service.h"
 
 class PrefRegistrySimple;
 
 namespace chromecast {
 namespace shell {
 
 // It uses JsonPrefStore internally and/so the format of config file is same to
 // that of JsonPrefStore.
 class PrefServiceHelper {
  public:
   // Loads configs from config file. Returns true if successful.
   static scoped_ptr<PrefService> CreatePrefService(
       PrefRegistrySimple* registry);
 
  private:
   // Registers any needed preferences for the current platform.
   static void RegisterPlatformPrefs(PrefRegistrySimple* registry);
 
   // Called after the pref file has been loaded.
   static void OnPrefsLoaded(PrefService* pref_service);
 };
 
 }  // namespace shell
 }  // namespace chromecast
 
 #endif  // CHROMECAST_BROWSER_PREF_SERVICE_HELPER_H_