components: Move PrefRegistrySyncable into user_prefs namespace.

chrome/browser/plugins/plugin_prefs_factory.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_PLUGINS_PLUGIN_PREFS_FACTORY_H_
 #define CHROME_BROWSER_PLUGINS_PLUGIN_PREFS_FACTORY_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/singleton.h"
 #include "chrome/browser/profiles/refcounted_profile_keyed_service_factory.h"
 
 class PluginPrefs;
-class PrefRegistrySyncable;
 class Profile;
 class ProfileKeyedService;
 
 class PluginPrefsFactory : public RefcountedProfileKeyedServiceFactory {
  public:
   static scoped_refptr<PluginPrefs> GetPrefsForProfile(Profile* profile);
 
   static PluginPrefsFactory* GetInstance();
 
  private:
   friend class PluginPrefs;
   friend struct DefaultSingletonTraits<PluginPrefsFactory>;
 
   // Helper method for PluginPrefs::GetForTestingProfile.
   static scoped_refptr<RefcountedProfileKeyedService> CreateForTestingProfile(
       content::BrowserContext* profile);
 
   PluginPrefsFactory();
   virtual ~PluginPrefsFactory();
 
   // RefcountedProfileKeyedServiceFactory methods:
   virtual scoped_refptr<RefcountedProfileKeyedService> BuildServiceInstanceFor(
       content::BrowserContext* context) const OVERRIDE;
 
   // ProfileKeyedServiceFactory methods:
-  virtual void RegisterUserPrefs(PrefRegistrySyncable* registry) OVERRIDE;
+  virtual void RegisterUserPrefs(
+      user_prefs::PrefRegistrySyncable* registry) OVERRIDE;
   virtual content::BrowserContext* GetBrowserContextToUse(
       content::BrowserContext* context) const OVERRIDE;
   virtual bool ServiceIsNULLWhileTesting() const OVERRIDE;
   virtual bool ServiceIsCreatedWithProfile() const OVERRIDE;
 };
 
 #endif  // CHROME_BROWSER_PLUGINS_PLUGIN_PREFS_FACTORY_H_