Move Singleton and related structs to namespace base

chrome/browser/profiles/gaia_info_update_service_factory.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_factory.h"
 
 #include "chrome/browser/profiles/gaia_info_update_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
 #include "chrome/common/pref_names.h"
@@ skipping 11 matching lines @@
 
 // static
 GAIAInfoUpdateService* GAIAInfoUpdateServiceFactory::GetForProfile(
     Profile* profile) {
   return static_cast<GAIAInfoUpdateService*>(
       GetInstance()->GetServiceForBrowserContext(profile, true));
 }
 
 // static
 GAIAInfoUpdateServiceFactory* GAIAInfoUpdateServiceFactory::GetInstance() {
-  return Singleton<GAIAInfoUpdateServiceFactory>::get();
+  return base::Singleton<GAIAInfoUpdateServiceFactory>::get();
 }
 
 KeyedService* GAIAInfoUpdateServiceFactory::BuildServiceInstanceFor(
     content::BrowserContext* context) const {
   Profile* profile = static_cast<Profile*>(context);
   if (!GAIAInfoUpdateService::ShouldUseGAIAProfileInfo(profile))
     return NULL;
   return new GAIAInfoUpdateService(profile);
 }
 
 void GAIAInfoUpdateServiceFactory::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* prefs) {
   prefs->RegisterInt64Pref(prefs::kProfileGAIAInfoUpdateTime, 0);
   prefs->RegisterStringPref(prefs::kProfileGAIAInfoPictureURL, std::string());
 }
 
 bool GAIAInfoUpdateServiceFactory::ServiceIsNULLWhileTesting() const {
   return true;
 }