Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/chromeos/proxy_config_service_impl.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_CHROMEOS_PROXY_CONFIG_SERVICE_IMPL_H_
 #define CHROME_BROWSER_CHROMEOS_PROXY_CONFIG_SERVICE_IMPL_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 181 matching lines @@
   // NetworkLibrary::NetworkObserver implementation.
   virtual void OnNetworkChanged(NetworkLibrary* cros,
                                 const Network* network) OVERRIDE;
 
   // Parse |network| proxy config and store result in |proxy_config|.
   // Returns true if proxy config was successfully parsed.
   static bool ParseProxyConfig(const Network* network,
                                net::ProxyConfig* proxy_config);
 
   // Register UseShardProxies preference.
-  static void RegisterPrefs(PrefService* pref_service);
+  static void RegisterPrefs(PrefServiceSimple* pref_service);
 
 #if defined(UNIT_TEST)
   void SetTesting(ProxyConfig* test_config) {
     UIMakeActiveNetworkCurrent();
     if (test_config) {
       std::string value;
       test_config->SerializeForNetwork(&value);
       SetProxyConfigForNetwork(active_network_, value, false);
     }
   }
@@ skipping 81 matching lines @@
   std::vector<base::Closure> callbacks_;
 
   base::WeakPtrFactory<ProxyConfigServiceImpl> pointer_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ProxyConfigServiceImpl);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_PROXY_CONFIG_SERVICE_IMPL_H_