Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/renderer_host/web_cache_manager.cc

 // 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.
 
 #include "chrome/browser/renderer_host/web_cache_manager.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ skipping 35 matching lines @@
 
   UMA_HISTOGRAM_MEMORY_MB("Cache.MaxCacheSizeMB",
                           default_cache_size / 1024 / 1024);
 
   return default_cache_size;
 }
 
 }  // anonymous namespace
 
 // static
-void WebCacheManager::RegisterPrefs(PrefService* prefs) {
+void WebCacheManager::RegisterPrefs(PrefServiceSimple* prefs) {
   prefs->RegisterIntegerPref(prefs::kMemoryCacheSize, GetDefaultCacheSize());
 }
 
 // static
 WebCacheManager* WebCacheManager::GetInstance() {
   return Singleton<WebCacheManager>::get();
 }
 
 WebCacheManager::WebCacheManager()
     : global_size_limit_(GetDefaultGlobalSizeLimit()),
@@ skipping 366 matching lines @@
     if (idle >= TimeDelta::FromMinutes(kRendererInactiveThresholdMinutes)) {
       // Moved to inactive status.  This invalidates our iterator.
       inactive_renderers_.insert(*iter);
       active_renderers_.erase(*iter);
       iter = active_renderers_.begin();
       continue;
     }
     ++iter;
   }
 }