Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/profiles/profile_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 <set>
 
 #include "chrome/browser/profiles/profile_manager.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 803 matching lines @@
 
   profile_manager->CreateProfileAsync(new_path,
                                       base::Bind(&OnOpenWindowForNewProfile,
                                                  desktop_type,
                                                  callback),
                                       name,
                                       icon_url);
 }
 
 // static
-void ProfileManager::RegisterPrefs(PrefService* prefs) {
+void ProfileManager::RegisterPrefs(PrefServiceSimple* prefs) {
   prefs->RegisterStringPref(prefs::kProfileLastUsed, "");
   prefs->RegisterIntegerPref(prefs::kProfilesNumCreated, 1);
   prefs->RegisterListPref(prefs::kProfilesLastActive);
 }
 
 size_t ProfileManager::GetNumberOfProfiles() {
   return GetProfileInfoCache().GetNumberOfProfiles();
 }
 
 bool ProfileManager::CompareProfilePathAndName(
@@ skipping 209 matching lines @@
 ProfileManager::ProfileInfo::ProfileInfo(
     Profile* profile,
     bool created)
     : profile(profile),
       created(created) {
 }
 
 ProfileManager::ProfileInfo::~ProfileInfo() {
   ProfileDestroyer::DestroyProfileWhenAppropriate(profile.release());
 }