Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/profiles/gaia_info_update_service.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/gaia_info_update_service.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 60 matching lines @@
   if (CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kGaiaProfileInfo)) {
     return true;
   }
 
   // This feature is disable by default.
   return false;
 }
 
 // static
-void GAIAInfoUpdateService::RegisterUserPrefs(PrefServiceBase* prefs) {
+void GAIAInfoUpdateService::RegisterUserPrefs(PrefService* prefs) {
   prefs->RegisterInt64Pref(
       prefs::kProfileGAIAInfoUpdateTime, 0, PrefServiceBase::UNSYNCABLE_PREF);
   prefs->RegisterStringPref(
       prefs::kProfileGAIAInfoPictureURL, "", PrefServiceBase::UNSYNCABLE_PREF);
 }
 
 bool GAIAInfoUpdateService::NeedsProfilePicture() const {
   return true;
 }
 
@@ skipping 108 matching lines @@
   const base::TimeDelta update_delta = base::Time::Now() - last_updated_;
 
   base::TimeDelta delta;
   if (update_delta < base::TimeDelta() || update_delta > desired_delta)
     delta = base::TimeDelta::FromSeconds(kMinUpdateIntervalSeconds);
   else
     delta = desired_delta - update_delta;
 
   timer_.Start(FROM_HERE, delta, this, &GAIAInfoUpdateService::Update);
 }