Views: Expose an on_closed callback via the MenuRunner constructor.

ui/views/controls/menu/menu_runner.h

 // Copyright (c) 2012 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_H_
 #define UI_VIEWS_CONTROLS_MENU_MENU_RUNNER_H_
 
 #include <stdint.h>
 
 #include <memory>
 
+#include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "ui/base/ui_base_types.h"
 #include "ui/views/controls/menu/menu_types.h"
 #include "ui/views/views_export.h"
 
 namespace base {
 class TimeTicks;
 }
 
@@ skipping 76 matching lines @@
   };
 
   enum RunResult {
     // Indicates RunMenuAt is returning because the MenuRunner was deleted.
     MENU_DELETED,
 
     // Indicates RunMenuAt returned and MenuRunner was not deleted.
     NORMAL_EXIT
   };
 
-  // Creates a new MenuRunner.
-  // |run_types| is a bitmask of RunTypes.
-  MenuRunner(ui::MenuModel* menu_model, int32_t run_types);
+  // Creates a new MenuRunner, which may use a native menu if available.
+  // |run_types| is a bitmask of RunTypes. If provided,
+  // |on_menu_closed_callback| is invoked when the menu is closed.
+  MenuRunner(ui::MenuModel* menu_model,
+             int32_t run_types,
+             const base::Closure& on_menu_closed_callback = base::Closure());
+
+  // Creates a runner for a custom-created toolkit-views menu.
   MenuRunner(MenuItemView* menu, int32_t run_types);
   ~MenuRunner();
 
   // Runs the menu. If this returns MENU_DELETED the method is returning
   // because the MenuRunner was deleted.
   // Typically callers should NOT do any processing if this returns
   // MENU_DELETED.
   // If |anchor| uses a |BUBBLE_..| type, the bounds will get determined by
   // using |bounds| as the thing to point at in screen coordinates.
   RunResult RunMenuAt(Widget* parent,
@@ skipping 47 matching lines @@
 
  protected:
   DisplayChangeListener() {}
 };
 
 }  // namespace internal
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_MENU_MENU_RUNNER_H_