Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/renderer_host/web_cache_manager.h

 // Copyright (c) 2011 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.
 
 // This is the browser side of the cache manager, it tracks the activity of the
 // render processes and allocates available memory cache resources.
 
 #ifndef CHROME_BROWSER_RENDERER_HOST_WEB_CACHE_MANAGER_H_
 #define CHROME_BROWSER_RENDERER_HOST_WEB_CACHE_MANAGER_H_
 
 #include <map>
 #include <list>
 #include <set>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebCache.h"
 
 template<typename Type>
 struct DefaultSingletonTraits;
-class PrefService;
+class PrefServiceSimple;
 
 class WebCacheManager : public content::NotificationObserver {
   friend class WebCacheManagerTest;
   FRIEND_TEST_ALL_PREFIXES(WebCacheManagerBrowserTest, CrashOnceOnly);
 
  public:
-  static void RegisterPrefs(PrefService* prefs);
+  static void RegisterPrefs(PrefServiceSimple* prefs);
 
   // Gets the singleton WebCacheManager object.  The first time this method
   // is called, a WebCacheManager object is constructed and returned.
   // Subsequent calls will return the same object.
   static WebCacheManager* GetInstance();
 
   // When a render process is created, it registers itself with the cache
   // manager host, causing the renderer to be allocated cache resources.
   void Add(int renderer_id);
 
@@ skipping 169 matching lines @@
   std::set<int> inactive_renderers_;
 
   base::WeakPtrFactory<WebCacheManager> weak_factory_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(WebCacheManager);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_WEB_CACHE_MANAGER_H_