Move Singleton and related structs to namespace base

extensions/browser/api/idle/idle_manager_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 "extensions/browser/api/idle/idle_manager_factory.h"
 
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
 #include "extensions/browser/api/idle/idle_manager.h"
 #include "extensions/browser/extension_system_provider.h"
 #include "extensions/browser/extensions_browser_client.h"
 
 namespace extensions {
 
 // static
 IdleManager* IdleManagerFactory::GetForBrowserContext(
     content::BrowserContext* context) {
   return static_cast<IdleManager*>(
       GetInstance()->GetServiceForBrowserContext(context, true));
 }
 
 // static
 IdleManagerFactory* IdleManagerFactory::GetInstance() {
-  return Singleton<IdleManagerFactory>::get();
+  return base::Singleton<IdleManagerFactory>::get();
 }
 
 IdleManagerFactory::IdleManagerFactory()
     : BrowserContextKeyedServiceFactory(
           "IdleManager",
           BrowserContextDependencyManager::GetInstance()) {
   DependsOn(ExtensionsBrowserClient::Get()->GetExtensionSystemFactory());
 }
 
 IdleManagerFactory::~IdleManagerFactory() {
@@ skipping 13 matching lines @@
 
 bool IdleManagerFactory::ServiceIsCreatedWithBrowserContext() const {
   return true;
 }
 
 bool IdleManagerFactory::ServiceIsNULLWhileTesting() const {
   return true;
 }
 
 }  // namespace extensions