Send fake event when event_type is set to exit menu

ui/base/win/events_win.cc

 // Copyright (c) 2011 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.
 
 #include <windowsx.h>
 
 #include "ui/base/events.h"
 
 #include "base/logging.h"
 #include "ui/base/keycodes/keyboard_code_conversion_win.h"
@@ skipping 235 matching lines @@
 float GetTouchAngle(const base::NativeEvent& native_event) {
   NOTIMPLEMENTED();
   return 0.0;
 }
 
 float GetTouchForce(const base::NativeEvent& native_event) {
   NOTIMPLEMENTED();
   return 0.0;
 }
 
+base::NativeEvent CreateNoopEvent() {
+  MSG event;
+  event.message = WM_USER;
+  event.wParam = 0;
+  event.lParam = 0;
+  return event;
+}
+
 }  // namespace ui