[exp] ash: sysui for mash

components/mus/ws/window_tree_host_impl.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/window_tree_host_impl.h"
 
 #include "base/debug/debugger.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/mus/common/types.h"
 #include "components/mus/public/interfaces/input_event_constants.mojom.h"
@@ skipping 466 matching lines @@
 void WindowTreeHostImpl::DispatchInputEventToWindow(ServerWindow* target,
                                                     bool in_nonclient_area,
                                                     mojom::EventPtr event) {
   if (event_ack_timer_.IsRunning()) {
     scoped_ptr<ProcessedEventTarget> processed_event_target(
         new ProcessedEventTarget(target, in_nonclient_area));
     QueueEvent(std::move(event), std::move(processed_event_target));
     return;
   }
 
+  if (event->action == mojom::EventType::POINTER_DOWN) {
+    LOG(ERROR) << "**** " << root_window()->GetDebugWindowHierarchy()
+               << " == " << target->id().connection_id << ","
+               << target->id().window_id;
+  }
   DispatchInputEventToWindowImpl(target, in_nonclient_area, std::move(event));
 }
 
 void WindowTreeHostImpl::OnWindowDestroyed(ServerWindow* window) {
   windows_needing_frame_destruction_.erase(window);
   window->RemoveObserver(this);
 }
 
 }  // namespace ws
 }  // namespace mus