Don't send touch events to windows like menus when the touch occurs outside the menu bounds.

ui/views/controls/menu/menu_host.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_HOST_H_
 #define UI_VIEWS_CONTROLS_MENU_MENU_HOST_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/views/widget/widget.h"
 
 namespace views {
 
 class NativeWidget;
 class SubmenuView;
 class View;
 class Widget;
 
+namespace internal {
+
+// This class is internal to views.
+class PreMenuEventDispatchHandler;
+
+}  // internal
+
 // SubmenuView uses a MenuHost to house the SubmenuView.
 //
 // SubmenuView owns the MenuHost. When SubmenuView is done with the MenuHost
 // |DestroyMenuHost| is invoked. The one exception to this is if the native
 // OS destroys the widget out from under us, in which case |MenuHostDestroyed|
 // is invoked back on the SubmenuView and the SubmenuView then drops references
 // to the MenuHost.
 class MenuHost : public Widget {
  public:
   explicit MenuHost(SubmenuView* submenu);
@@ skipping 36 matching lines @@
 
   // The view we contain.
   SubmenuView* submenu_;
 
   // If true, DestroyMenuHost has been invoked.
   bool destroying_;
 
   // If true and capture is lost we don't notify the delegate.
   bool ignore_capture_lost_;
 
+#if !defined(OS_MACOSX)
+  // Handles raw touch events at the moment.
+  scoped_ptr<internal::PreMenuEventDispatchHandler> pre_dispatch_handler_;
+#endif
+
   DISALLOW_COPY_AND_ASSIGN(MenuHost);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_MENU_MENU_HOST_H_