Move Singleton and related structs to namespace base

extensions/browser/api/networking_private/networking_private_delegate_factory.cc

 // Copyright 2014 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/networking_private/networking_private_delegate_factory.h"
 
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
 #include "content/public/browser/browser_thread.h"
 #include "extensions/browser/extensions_browser_client.h"
 
@@ skipping 26 matching lines @@
 NetworkingPrivateDelegate*
 NetworkingPrivateDelegateFactory::GetForBrowserContext(
     BrowserContext* browser_context) {
   return static_cast<NetworkingPrivateDelegate*>(
       GetInstance()->GetServiceForBrowserContext(browser_context, true));
 }
 
 // static
 NetworkingPrivateDelegateFactory*
 NetworkingPrivateDelegateFactory::GetInstance() {
-  return Singleton<NetworkingPrivateDelegateFactory>::get();
+  return base::Singleton<NetworkingPrivateDelegateFactory>::get();
 }
 
 NetworkingPrivateDelegateFactory::NetworkingPrivateDelegateFactory()
     : BrowserContextKeyedServiceFactory(
           "NetworkingPrivateDelegate",
           BrowserContextDependencyManager::GetInstance()) {
 }
 
 NetworkingPrivateDelegateFactory::~NetworkingPrivateDelegateFactory() {
 }
@@ skipping 45 matching lines @@
 bool NetworkingPrivateDelegateFactory::ServiceIsCreatedWithBrowserContext()
     const {
   return false;
 }
 
 bool NetworkingPrivateDelegateFactory::ServiceIsNULLWhileTesting() const {
   return false;
 }
 
 }  // namespace extensions