Send fake event when event_type is set to exit menu

ui/aura/desktop_host_linux.cc

Index: ui/aura/desktop_host_linux.cc
diff --git a/ui/aura/desktop_host_linux.cc b/ui/aura/desktop_host_linux.cc
index e20b1c57403bbeba3bf1b7d9e8b18aaec46642fc..2de31e68518240eb3f72ad280935cb2d5cedc885 100644
--- a/ui/aura/desktop_host_linux.cc
+++ b/ui/aura/desktop_host_linux.cc
@@ -240,6 +240,7 @@ class DesktopHostLinux : public DesktopHost {
   virtual void SetSize(const gfx::Size& size) OVERRIDE;
   virtual void SetCursor(gfx::NativeCursor cursor_type) OVERRIDE;
   virtual gfx::Point QueryMouseLocation() OVERRIDE;
+  virtual void PostNativeEvent(const base::NativeEvent& event) OVERRIDE;
 
   // Returns true if there's an X window manager present... in most cases.  Some
   // window managers (notably, ion3) don't implement enough of ICCCM for us to
@@ -481,6 +482,15 @@ gfx::Point DesktopHostLinux::QueryMouseLocation() {
                     max(0, min(size_.height(), win_y_return)));
 }
 
+void DesktopHostLinux::PostNativeEvent(const base::NativeEvent& native_event) {
+  DCHECK(xwindow_);
+  DCHECK(xdisplay_);
+  XEvent xevent = *native_event;
+  xevent.xany.display = xdisplay_;
+  xevent.xany.window = xwindow_;
+  ::XPutBackEvent(xdisplay_, &xevent);
+}
+
 bool DesktopHostLinux::IsWindowManagerPresent() {
   // Per ICCCM 2.8, "Manager Selections", window managers should take ownership
   // of WM_Sn selections (where n is a screen number).