Convert //chrome/browser/ui from scoped_ptr to std::unique_ptr

chrome/browser/ui/ash/multi_user/multi_user_context_menu.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_ASH_MULTI_USER_MULTI_USER_CONTEXT_MENU_H_
 #define CHROME_BROWSER_UI_ASH_MULTI_USER_MULTI_USER_CONTEXT_MENU_H_
 
-#include "base/memory/scoped_ptr.h"
+#include <memory>
 
 namespace aura {
 class Window;
 }
 
 namespace ui {
 class MenuModel;
 }
 
 // The multi user context menu factory.
-scoped_ptr<ui::MenuModel> CreateMultiUserContextMenu(aura::Window* window);
+std::unique_ptr<ui::MenuModel> CreateMultiUserContextMenu(aura::Window* window);
 
 // Executes move of a |window| to another profile.
 // |command_id| defines a user whose desktop is being visited.
 void ExecuteVisitDesktopCommand(int command_id, aura::Window* window);
 
 #endif  // CHROME_BROWSER_UI_ASH_MULTI_USER_MULTI_USER_CONTEXT_MENU_H_