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

ui/views/widget/desktop_aura/desktop_window_tree_host_win.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_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_WIN_H_
 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_WIN_H_
 
 #include "base/macros.h"
+#include "base/memory/weak_ptr.h"
 #include "ui/aura/window_tree_host.h"
+#include "ui/events/event.h"
 #include "ui/views/views_export.h"
 #include "ui/views/widget/desktop_aura/desktop_window_tree_host.h"
 #include "ui/views/win/hwnd_message_handler_delegate.h"
 #include "ui/wm/public/animation_host.h"
-
 namespace aura {
 namespace client {
 class DragDropClient;
 class FocusClient;
 class ScopedTooltipDisabler;
 }
 }
 
 namespace views {
 class DesktopCursorClient;
@@ skipping 171 matching lines @@
   Widget* GetWidget();
   const Widget* GetWidget() const;
   HWND GetHWND() const;
 
  private:
   void SetWindowTransparency();
 
   // Returns true if a modal window is active in the current root window chain.
   bool IsModalWindowActive() const;
 
+  // Posts an event to the event processor. Invoked as a task.
+  void PostEventToProcessor(const ui::Event& event);
+
   scoped_ptr<HWNDMessageHandler> message_handler_;
   scoped_ptr<aura::client::FocusClient> focus_client_;
 
   // TODO(beng): Consider providing an interface to DesktopNativeWidgetAura
   //             instead of providing this route back to Widget.
   internal::NativeWidgetDelegate* native_widget_delegate_;
 
   DesktopNativeWidgetAura* desktop_native_widget_aura_;
 
   aura::Window* content_window_;
@@ skipping 32 matching lines @@
   corewm::TooltipWin* tooltip_;
 
   // Visibility of the cursor. On Windows we can have multiple root windows and
   // the implementation of ::ShowCursor() is based on a counter, so making this
   // member static ensures that ::ShowCursor() is always called exactly once
   // whenever the cursor visibility state changes.
   static bool is_cursor_visible_;
 
   scoped_ptr<aura::client::ScopedTooltipDisabler> tooltip_disabler_;
 
+  // The WeakPtrFactories below must occur last in the class definition so they
+  // get destroyed last.
+  base::WeakPtrFactory<DesktopWindowTreeHostWin> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(DesktopWindowTreeHostWin);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_WIN_H_