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.cc

Index: ui/views/widget/desktop_aura/desktop_window_tree_host_win.cc
diff --git a/ui/views/widget/desktop_aura/desktop_window_tree_host_win.cc b/ui/views/widget/desktop_aura/desktop_window_tree_host_win.cc
index b42c5588f690932ca73ff3b5cbcfebe98703c4da..eb91b1643ca7acfb51f5a3b901d52e4f5f7f5a44 100644
--- a/ui/views/widget/desktop_aura/desktop_window_tree_host_win.cc
+++ b/ui/views/widget/desktop_aura/desktop_window_tree_host_win.cc
@@ -96,6 +96,10 @@ DesktopWindowTreeHostWin::~DesktopWindowTreeHostWin() {
 
 // static
 aura::Window* DesktopWindowTreeHostWin::GetContentWindowForHWND(HWND hwnd) {
+  // All HWND's we create should have WindowTreeHost instances associated with

[sky, 2016/01/13 21:56:08]

remove comment (at least last sentence, first two are fine).

[ananta, 2016/01/13 22:16:32]

Done.

+  // them. There are exceptions like the content layer creating HWND's which
+  // are not associated with WindowTreeHost instances. In such cases we should
+  // try and find the WindowTreeHost associated with the parent.
   aura::WindowTreeHost* host =
       aura::WindowTreeHost::GetForAcceleratedWidget(hwnd);
   return host ? host->window()->GetProperty(kContentWindowForRootWindow) : NULL;