Work in progress: Adds MessagePumpDispatcher::ShouldExit(). This is used to handle the

ui/views/controls/menu/menu_controller.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_CONTROLLER_H_
 #define UI_VIEWS_CONTROLS_MENU_MENU_CONTROLLER_H_
 #pragma once
 
 #include "build/build_config.h"
 
@@ skipping 220 matching lines @@
   // Internally this updates pending_state_ immediatley. state_ is only updated
   // immediately if SELECTION_UPDATE_IMMEDIATELY is set. If
   // SELECTION_UPDATE_IMMEDIATELY is not set CommitPendingSelection is invoked
   // to show/hide submenus and update state_.
   void SetSelection(MenuItemView* menu_item, int types);
 
   void SetSelectionOnPointerDown(SubmenuView* source,
                                  const LocatedEvent& event);
   void StartDrag(SubmenuView* source, const gfx::Point& location);
 
-#if defined(OS_WIN) || defined(USE_AURA)
   // Dispatcher method. This returns true if the menu was canceled, or
   // if the message is such that the menu should be closed.
   virtual bool Dispatch(const base::NativeEvent& event) OVERRIDE;
-#endif
+  virtual bool ShouldExit() OVERRIDE;
 
   // Key processing. The return value of this is returned from Dispatch.
   // In other words, if this returns false (which happens if escape was
   // pressed, or a matching mnemonic was found) the message loop returns.
   bool OnKeyDown(ui::KeyboardCode key_code);
 
   // Creates a MenuController. If |blocking| is true a nested message loop is
   // started in |Run|.
   MenuController(bool blocking, internal::MenuControllerDelegate* delegate);
 
@@ skipping 268 matching lines @@
   View* active_mouse_view_;
 
   internal::MenuControllerDelegate* delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(MenuController);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_MENU_MENU_CONTROLLER_H_