Send fake event when event_type is set to exit menu

ui/base/x/events_x.cc

Index: ui/base/x/events_x.cc
diff --git a/ui/base/x/events_x.cc b/ui/base/x/events_x.cc
index 329acbe5147d1a8a75fe1691d9b8b718b1a57c7d..966fec275141e06a768c3e9da254b5010621cee8 100644
--- a/ui/base/x/events_x.cc
+++ b/ui/base/x/events_x.cc
@@ -4,6 +4,7 @@
 
 #include "ui/base/events.h"
 
+#include <X11/Xlib.h>
 #include <X11/extensions/XInput2.h>
 
 #include "base/logging.h"
@@ -354,4 +355,14 @@ float GetTouchForce(const base::NativeEvent& native_event) {
   return force;
 }
 
+base::NativeEvent CreateNoopEvent() {
+  static XEvent* noop = new XEvent();
+  noop->xclient.type = ClientMessage;
+  noop->xclient.display = NULL;
+  noop->xclient.window = None;
+  noop->xclient.message_type = 0;
+  noop->xclient.format = 0;
+  return noop;
+}
+
 }  // namespace ui