Consolidate win/x dispatchers

chrome/browser/ui/views/simple_message_box_views.h

Index: chrome/browser/ui/views/simple_message_box_views.h
diff --git a/chrome/browser/ui/views/simple_message_box_views.h b/chrome/browser/ui/views/simple_message_box_views.h
index c913eb1b33f7a388e2ddf505fc7f35819c05f741..cb51c85bf19b5a97c5530dd47a5df07ade1a9bc8 100644
--- a/chrome/browser/ui/views/simple_message_box_views.h
+++ b/chrome/browser/ui/views/simple_message_box_views.h
@@ -74,14 +74,9 @@ class SimpleMessageBoxViews : public views::DialogDelegate,
   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_;