Move Singleton and related structs to namespace base

chrome/browser/ui/app_list/app_list_syncable_service_factory.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_APP_LIST_APP_LIST_SYNCABLE_SERVICE_FACTORY_H_
 #define CHROME_BROWSER_UI_APP_LIST_APP_LIST_SYNCABLE_SERVICE_FACTORY_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
@@ skipping 11 matching lines @@
 class AppListSyncableServiceFactory : public BrowserContextKeyedServiceFactory {
  public:
   static AppListSyncableService* GetForProfile(Profile* profile);
 
   static AppListSyncableServiceFactory* GetInstance();
 
   static scoped_ptr<KeyedService> BuildInstanceFor(
       content::BrowserContext* browser_context);
 
  private:
-  friend struct DefaultSingletonTraits<AppListSyncableServiceFactory>;
+  friend struct base::DefaultSingletonTraits<AppListSyncableServiceFactory>;
 
   AppListSyncableServiceFactory();
   ~AppListSyncableServiceFactory() override;
 
   // BrowserContextKeyedServiceFactory:
   KeyedService* BuildServiceInstanceFor(
       content::BrowserContext* profile) const override;
   void RegisterProfilePrefs(
       user_prefs::PrefRegistrySyncable* registry) override;
   content::BrowserContext* GetBrowserContextToUse(
       content::BrowserContext* context) const override;
   bool ServiceIsCreatedWithBrowserContext() const override;
   bool ServiceIsNULLWhileTesting() const override;
 
   DISALLOW_COPY_AND_ASSIGN(AppListSyncableServiceFactory);
 };
 
 }  // namespace app_list
 
 #endif  // CHROME_BROWSER_UI_APP_LIST_APP_LIST_SYNCABLE_SERVICE_FACTORY_H_