Componentize PrefSyncableService and support classes.

chrome/browser/extensions/external_pref_loader.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_EXTERNAL_PREF_LOADER_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTERNAL_PREF_LOADER_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/scoped_observer.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/external_loader.h"
-#include "chrome/browser/prefs/pref_service_syncable_observer.h"
 #include "chrome/browser/sync/profile_sync_service.h"
 #include "components/sync_driver/sync_service_observer.h"
+#include "components/syncable_prefs/pref_service_syncable_observer.h"
 
 class PrefServiceSyncable;
 class Profile;
 
 namespace extensions {
 
 // A specialization of the ExternalLoader that uses a json file to
 // look up which external extensions are registered.
 // Instances of this class are expected to be created and destroyed on the UI
 // thread and they are expecting public method calls from the UI thread.
@@ skipping 103 matching lines @@
 
   base::FilePath fake_base_path_;
   scoped_ptr<base::DictionaryValue> testing_prefs_;
 
   DISALLOW_COPY_AND_ASSIGN(ExternalTestingLoader);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTERNAL_PREF_LOADER_H_