mash: Repost mouse pressed event when closing Ash system tray

components/mus/ws/event_dispatcher.cc

Index: components/mus/ws/event_dispatcher.cc
diff --git a/components/mus/ws/event_dispatcher.cc b/components/mus/ws/event_dispatcher.cc
index 98e09b71ad7f98e35bab2424de20c9d038a6b94d..b4d5936d81900641a11ce4662b3985804e6684f5 100644
--- a/components/mus/ws/event_dispatcher.cc
+++ b/components/mus/ws/event_dispatcher.cc
@@ -371,6 +371,8 @@ void EventDispatcher::DispatchToPointerTarget(const PointerTarget& target,
   if (!target.window)
     return;
 
+  // Transform the event to the target's coordinate system. The root_location
+  // is not changed because each EventDispatcher manages a single root.
   gfx::Point location(event.location());
   gfx::Transform transform(GetTransformToWindow(surface_id_, target.window));
   transform.TransformPoint(&location);