Consolidate win/x dispatchers

chrome/browser/ui/views/simple_message_box_views.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 CHROME_BROWSER_UI_VIEWS_SIMPLE_MESSAGE_BOX_VIEWS_H_
 #define CHROME_BROWSER_UI_VIEWS_SIMPLE_MESSAGE_BOX_VIEWS_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
@@ skipping 56 matching lines @@
     DIALOG_YES_NO,
   };
 
   SimpleMessageBoxViews(gfx::NativeWindow parent_window,
                         DialogType type,
                         const string16& title,
                         const string16& message);
   virtual ~SimpleMessageBoxViews();
 
   // MessageLoop::Dispatcher implementation.
-#if defined(OS_WIN)
   // 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 MSG& msg) OVERRIDE;
-#elif defined(USE_AURA)
-  virtual base::MessagePumpDispatcher::DispatchStatus Dispatch(
-      XEvent* xevent) OVERRIDE;
-#endif
+  virtual bool Dispatch(const base::NativeEvent& event) OVERRIDE;
 
   const DialogType type_;
   string16 message_box_title_;
   views::MessageBoxView* message_box_view_;
   DispositionType disposition_;
 
   DISALLOW_COPY_AND_ASSIGN(SimpleMessageBoxViews);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_SIMPLE_MESSAGE_BOX_VIEWS_H_