Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/ui/browser_view_prefs.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/ui/browser_view_prefs.h"
 
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/common/pref_names.h"
 
 namespace {
 
 // How long do we wait before we consider a window hung (in ms).
 const int kDefaultPluginMessageResponseTimeout = 25000;
 
 // How frequently we check for hung plugin windows.
 const int kDefaultHungPluginDetectFrequency = 2000;
 
 }  // namespace
 
 namespace chrome {
 
-void RegisterBrowserViewPrefs(PrefService* prefs) {
+void RegisterBrowserViewPrefs(PrefServiceSimple* prefs) {
   prefs->RegisterIntegerPref(prefs::kPluginMessageResponseTimeout,
                              kDefaultPluginMessageResponseTimeout);
   prefs->RegisterIntegerPref(prefs::kHungPluginDetectFrequency,
                              kDefaultHungPluginDetectFrequency);
 }
 
 }  // namespace chrome