wm: Change the DispatcherClient interface.

ui/views/controls/menu/menu_message_loop_aura.h

Index: ui/views/controls/menu/menu_message_loop_aura.h
diff --git a/ui/views/controls/menu/menu_message_loop_aura.h b/ui/views/controls/menu/menu_message_loop_aura.h
index 76d95e3804f60f9132f79114bc41d13f0fe9ce20..49e8a3928273207c0b43fd233d2226922c594c18 100644
--- a/ui/views/controls/menu/menu_message_loop_aura.h
+++ b/ui/views/controls/menu/menu_message_loop_aura.h
@@ -5,10 +5,15 @@
 #ifndef UI_VIEWS_CONTROLS_MENU_MENU_MESSAGE_LOOP_AURA_H_
 #define UI_VIEWS_CONTROLS_MENU_MENU_MESSAGE_LOOP_AURA_H_
 
+#include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/views/controls/menu/menu_message_loop.h"
 
+namespace base {
+class MessagePumpDispatcher;
+}
+
 namespace ui {
 class ScopedEventDispatcher;
 }
@@ -37,6 +42,7 @@ class MenuMessageLoopAura : public MenuMessageLoop {
   Widget* owner_;
 
   scoped_ptr<ui::ScopedEventDispatcher> nested_dispatcher_;
+  base::Closure message_loop_quit_;
 
   DISALLOW_COPY_AND_ASSIGN(MenuMessageLoopAura);
 };