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

ui/views/controls/menu/menu_controller.h

Index: ui/views/controls/menu/menu_controller.h
diff --git a/ui/views/controls/menu/menu_controller.h b/ui/views/controls/menu/menu_controller.h
index b550ad75ba57883ff1a6d25eab4af80d6a2a4306..1d799bd952f3167e7e6061fba6ca1a52c04e0601 100644
--- a/ui/views/controls/menu/menu_controller.h
+++ b/ui/views/controls/menu/menu_controller.h
@@ -151,6 +151,7 @@ class VIEWS_EXPORT MenuController : public WidgetObserver {
   void OnMouseEntered(SubmenuView* source, const ui::MouseEvent& event);
   bool OnMouseWheel(SubmenuView* source, const ui::MouseWheelEvent& event);
   void OnGestureEvent(SubmenuView* source, ui::GestureEvent* event);
+  void OnTouchEvent(SubmenuView* source, ui::TouchEvent* event);
   View* GetTooltipHandlerForPoint(SubmenuView* source, const gfx::Point& point);
   void ViewHierarchyChanged(SubmenuView* source,
                             const View::ViewHierarchyChangedDetails& details);
@@ -306,8 +307,11 @@ class VIEWS_EXPORT MenuController : public WidgetObserver {
   // to show/hide submenus and update state_.
   void SetSelection(MenuItemView* menu_item, int types);
 
+  // The |EventType| template argument indicates the type of the event.
+  // For e.g. MouseEvent, TouchEvent, etc.
+  template<class EventType>
   void SetSelectionOnPointerDown(SubmenuView* source,
-                                 const ui::LocatedEvent& event);
+                                 const EventType& event);
   void StartDrag(SubmenuView* source, const gfx::Point& location);
 
   // Key processing.
@@ -502,7 +506,10 @@ class VIEWS_EXPORT MenuController : public WidgetObserver {
   // On non-aura Windows, a new mouse event is generated and posted to
   // the window (if there is one) at the location of the event. On
   // aura, the event is reposted on the RootWindow.
-  void RepostEvent(SubmenuView* source, const ui::LocatedEvent& event);
+  // The |EventType| template argument indicates the type of the event.
+  // For e.g. MouseEvent, TouchEvent, etc.
+  template<class EventType>

[sky, 2016/01/12 21:16:42]

I'm not seeing why you need the template args.

[ananta, 2016/01/13 01:21:24]

Replaced with LocatedEvent* here and other places.

+  void RepostEvent(SubmenuView* source, const EventType& event);
 
   // Sets the drop target to new_item.
   void SetDropMenuItem(MenuItemView* new_item,