mash: Repost mouse pressed event when closing Ash system tray

components/mus/ws/event_dispatcher.cc

 // Copyright 2015 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 "components/mus/ws/event_dispatcher.h"
 
 #include <set>
 
 #include "base/time/time.h"
 #include "cc/surfaces/surface_hittest.h"
@@ skipping 353 matching lines @@
       return true;
   }
   return false;
 }
 
 void EventDispatcher::DispatchToPointerTarget(const PointerTarget& target,
                                               const ui::PointerEvent& event) {
   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);
   scoped_ptr<ui::Event> clone = ui::Event::Clone(event);
   clone->AsPointerEvent()->set_location(location);
   // TODO(jonross): add post-target accelerator support once accelerators
   // support pointer events.
   delegate_->DispatchInputEventToWindow(target.window, target.in_nonclient_area,
                                         *clone, nullptr);
 }
@@ skipping 50 matching lines @@
 
 void EventDispatcher::OnWindowDestroyed(ServerWindow* window) {
   CancelPointerEventsToTarget(window);
 
   if (mouse_cursor_source_window_ == window)
     mouse_cursor_source_window_ = nullptr;
 }
 
 }  // namespace ws
 }  // namespace mus