Move Singleton and related structs to namespace base

components/password_manager/content/browser/password_manager_internals_service_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 "components/password_manager/content/browser/password_manager_internals_service_factory.h"
 
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
 #include "components/password_manager/core/browser/password_manager_internals_service.h"
 
 namespace password_manager {
 
 // static
 PasswordManagerInternalsService*
 PasswordManagerInternalsServiceFactory::GetForBrowserContext(
     content::BrowserContext* context) {
   return static_cast<PasswordManagerInternalsService*>(
       GetInstance()->GetServiceForBrowserContext(context, /* create = */ true));
 }
 
 // static
 PasswordManagerInternalsServiceFactory*
 PasswordManagerInternalsServiceFactory::GetInstance() {
-  return Singleton<PasswordManagerInternalsServiceFactory>::get();
+  return base::Singleton<PasswordManagerInternalsServiceFactory>::get();
 }
 
 PasswordManagerInternalsServiceFactory::PasswordManagerInternalsServiceFactory()
     : BrowserContextKeyedServiceFactory(
           "PasswordManagerInternalsService",
           BrowserContextDependencyManager::GetInstance()) {
 }
 
 PasswordManagerInternalsServiceFactory::
     ~PasswordManagerInternalsServiceFactory() {
 }
 
 KeyedService* PasswordManagerInternalsServiceFactory::BuildServiceInstanceFor(
     content::BrowserContext* /* context */) const {
   return new PasswordManagerInternalsService();
 }
 
 }  // namespace password_manager