Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/profiles/profile_info_cache.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/profiles/profile_info_cache.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/format_macros.h"
 #include "base/i18n/case_conversion.h"
@@ skipping 805 matching lines @@
        ++it) {
     const base::DictionaryValue* info = NULL;
     cache->GetDictionary(*it, &info);
     info->GetString(kNameKey, &name);
     names.push_back(name);
   }
   return names;
 }
 
 // static
-void ProfileInfoCache::RegisterPrefs(PrefService* prefs) {
+void ProfileInfoCache::RegisterPrefs(PrefServiceSimple* prefs) {
   prefs->RegisterDictionaryPref(prefs::kProfileInfoCache);
 }