Turn Message Center Menus Async

ui/message_center/views/message_view_context_menu_controller.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 UI_MESSAGE_CENTER_VIEWS_MESSAGE_VIEW_CONTEXT_MENU_CONTROLLER_H_
 #define UI_MESSAGE_CENTER_VIEWS_MESSAGE_VIEW_CONTEXT_MENU_CONTROLLER_H_
 
+#include <memory>
+
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "ui/views/context_menu_controller.h"
 
+namespace ui {
+class MenuModel;
+}  // namespace ui
+
+namespace views {
+class MenuModelAdapter;
+class MenuRunner;
+}  // namespace views
+
 namespace message_center {
 class MessageCenterController;
 
 class MessageViewContextMenuController : public views::ContextMenuController {
  public:
   explicit MessageViewContextMenuController(
       MessageCenterController* controller);
   ~MessageViewContextMenuController() override;
 
  private:
   // Overridden from views::ContextMenuController:
   void ShowContextMenuForView(views::View* source,
                               const gfx::Point& point,
                               ui::MenuSourceType source_type) override;
 
+  // Callback for MenuModelAdapter
+  void OnMenuClosed();
+
   MessageCenterController* controller_;
 
+  std::unique_ptr<ui::MenuModel> menu_model_;
+  std::unique_ptr<views::MenuModelAdapter> menu_model_adapter_;
+  std::unique_ptr<views::MenuRunner> menu_runner_;
+
   DISALLOW_COPY_AND_ASSIGN(MessageViewContextMenuController);
 };
 
 }  // namespace message_center
 
 #endif  // UI_MESSAGE_CENTER_VIEWS_MESSAGE_VIEW_CONTEXT_MENU_CONTROLLER_H_