Move Singleton and related structs to namespace base

components/password_manager/content/browser/password_manager_internals_service_factory.h

 // 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.
 
 #ifndef COMPONENTS_PASSWORD_MANAGER_CONTENT_BROWSER_PASSWORD_MANAGER_INTERNALS_SERVICE_FACTORY_H_
 #define COMPONENTS_PASSWORD_MANAGER_CONTENT_BROWSER_PASSWORD_MANAGER_INTERNALS_SERVICE_FACTORY_H_
 
 #include "base/memory/singleton.h"
 #include "components/keyed_service/content/browser_context_keyed_service_factory.h"
 
@@ skipping 10 matching lines @@
 // which means that no service is returned in Incognito.
 class PasswordManagerInternalsServiceFactory
     : public BrowserContextKeyedServiceFactory {
  public:
   static PasswordManagerInternalsService* GetForBrowserContext(
       content::BrowserContext* context);
 
   static PasswordManagerInternalsServiceFactory* GetInstance();
 
  private:
-  friend struct DefaultSingletonTraits<PasswordManagerInternalsServiceFactory>;
+  friend struct base::DefaultSingletonTraits<
+      PasswordManagerInternalsServiceFactory>;
 
   PasswordManagerInternalsServiceFactory();
   ~PasswordManagerInternalsServiceFactory() override;
 
   // BrowserContextKeyedServiceFactory:
   KeyedService* BuildServiceInstanceFor(
       content::BrowserContext* context) const override;
 
   DISALLOW_COPY_AND_ASSIGN(PasswordManagerInternalsServiceFactory);
 };
 
 }  // namespace password_manager
 
 #endif  // COMPONENTS_PASSWORD_MANAGER_CONTENT_BROWSER_PASSWORD_MANAGER_INTERNALS_SERVICE_FACTORY_H_