Views: Expose an on_closed callback via the MenuRunner constructor.

ui/views/controls/menu/menu_runner_impl_adapter.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 UI_VIEWS_CONTROLS_MENU_MENU_RUNNER_IMPL_ADAPTER_H_
 #define UI_VIEWS_CONTROLS_MENU_MENU_RUNNER_IMPL_ADAPTER_H_
 
 #include <stdint.h>
 
 #include "base/macros.h"
 #include "ui/views/controls/menu/menu_runner_impl_interface.h"
+#include "ui/views/views_export.h"
 
 namespace views {
 namespace internal {
 
 class MenuRunnerImpl;
 
 // Given a MenuModel, adapts MenuRunnerImpl which expects a MenuItemView.
-class MenuRunnerImplAdapter : public MenuRunnerImplInterface {
+class VIEWS_EXPORT MenuRunnerImplAdapter
+    : public NON_EXPORTED_BASE(MenuRunnerImplInterface) {
  public:
-  explicit MenuRunnerImplAdapter(ui::MenuModel* menu_model);
+  MenuRunnerImplAdapter(ui::MenuModel* menu_model,
+                        const base::Closure& on_menu_closed_callback);
 
   // MenuRunnerImplInterface:
   bool IsRunning() const override;
   void Release() override;
   MenuRunner::RunResult RunMenuAt(Widget* parent,
                                   MenuButton* button,
                                   const gfx::Rect& bounds,
                                   MenuAnchorPosition anchor,
                                   int32_t types) override;
   void Cancel() override;
   base::TimeTicks GetClosingEventTime() const override;
 
  private:
   ~MenuRunnerImplAdapter() override;
 
   std::unique_ptr<MenuModelAdapter> menu_model_adapter_;
   MenuRunnerImpl* impl_;
 
   DISALLOW_COPY_AND_ASSIGN(MenuRunnerImplAdapter);
 };
 
 }  // namespace internal
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_MENU_MENU_RUNNER_IMPL_ADAPTER_H_