Move Singleton and related structs to namespace base

chrome/browser/services/gcm/gcm_profile_service_factory.cc

 // Copyright (c) 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/services/gcm/gcm_profile_service_factory.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/profiles/incognito_helpers.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/services/gcm/gcm_profile_service.h"
@@ skipping 14 matching lines @@
   // GCM is not supported in incognito mode.
   if (profile->IsOffTheRecord())
     return NULL;
 
   return static_cast<GCMProfileService*>(
       GetInstance()->GetServiceForBrowserContext(profile, true));
 }
 
 // static
 GCMProfileServiceFactory* GCMProfileServiceFactory::GetInstance() {
-  return Singleton<GCMProfileServiceFactory>::get();
+  return base::Singleton<GCMProfileServiceFactory>::get();
 }
 
 GCMProfileServiceFactory::GCMProfileServiceFactory()
     : BrowserContextKeyedServiceFactory(
         "GCMProfileService",
         BrowserContextDependencyManager::GetInstance()) {
   DependsOn(SigninManagerFactory::GetInstance());
   DependsOn(ProfileOAuth2TokenServiceFactory::GetInstance());
 #if !defined(OS_ANDROID)
   DependsOn(LoginUIServiceFactory::GetInstance());
@@ skipping 13 matching lines @@
       scoped_ptr<GCMClientFactory>(new GCMClientFactory));
 #endif
 }
 
 content::BrowserContext* GCMProfileServiceFactory::GetBrowserContextToUse(
     content::BrowserContext* context) const {
   return chrome::GetBrowserContextOwnInstanceInIncognito(context);
 }
 
 }  // namespace gcm