Move Singleton and related structs to namespace base

chrome/browser/signin/gaia_cookie_manager_service_factory.cc

 // Copyright 2013 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/signin/gaia_cookie_manager_service_factory.h"
 
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/signin/chrome_signin_client_factory.h"
 #include "chrome/browser/signin/profile_oauth2_token_service_factory.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
@@ skipping 14 matching lines @@
 // static
 GaiaCookieManagerService* GaiaCookieManagerServiceFactory::GetForProfile(
     Profile* profile) {
   return static_cast<GaiaCookieManagerService*>(
       GetInstance()->GetServiceForBrowserContext(profile, true));
 }
 
 // static
 GaiaCookieManagerServiceFactory*
 GaiaCookieManagerServiceFactory::GetInstance() {
-  return Singleton<GaiaCookieManagerServiceFactory>::get();
+  return base::Singleton<GaiaCookieManagerServiceFactory>::get();
 }
 
 KeyedService* GaiaCookieManagerServiceFactory::BuildServiceInstanceFor(
     content::BrowserContext* context) const {
   Profile* profile = Profile::FromBrowserContext(context);
   GaiaCookieManagerService* cookie_service = new GaiaCookieManagerService(
       ProfileOAuth2TokenServiceFactory::GetForProfile(profile),
       GaiaConstants::kChromeSource,
       ChromeSigninClientFactory::GetForProfile(profile));
   return cookie_service;
 }
 
 void GaiaCookieManagerServiceFactory::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
 }