Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/ui/webui/ntp/android/promo_handler.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_UI_WEBUI_NTP_ANDROID_PROMO_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_NTP_ANDROID_PROMO_HANDLER_H_
 
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_ui_message_handler.h"
 
-class PrefService;
+class PrefServiceSyncable;
 
 namespace base {
   class DictionaryValue;
   class ListValue;
 }
 
 // The handler for JavaScript messages related to the Android NTP promo.
 class PromoHandler : public content::WebUIMessageHandler,
                      public content::NotificationObserver {
  public:
   PromoHandler();
   virtual ~PromoHandler();
 
   // WebUIMessageHandler implementation.
   virtual void RegisterMessages() OVERRIDE;
 
   // Register preferences.
-  static void RegisterUserPrefs(PrefService* prefs);
+  static void RegisterUserPrefs(PrefServiceSyncable* prefs);
 
  private:
   // NotificationObserver override and implementation.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   // Callback for the "promoSendEmail" message.
   // |args| is a list [ subject, body, app-chooser-message ].
   void HandlePromoSendEmail(const base::ListValue* args);
@@ skipping 32 matching lines @@
   // Updates the profile preference if any desktop session was discovered.
   void CheckDesktopSessions();
 
   // Registrar to receive notification on promo changes.
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(PromoHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_NTP_ANDROID_PROMO_HANDLER_H_