Ensure that in Desktop AURA the WindowModalityController class is at the head of the event pre targ…

ui/events/event_target.cc

 // Copyright (c) 2012 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 "ui/events/event_target.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "ui/events/event.h"
@@ skipping 30 matching lines @@
 
 void EventTarget::RemovePostTargetHandler(EventHandler* handler) {
   EventHandlerList::iterator find =
       std::find(post_target_list_.begin(),
                 post_target_list_.end(),
                 handler);
   if (find != post_target_list_.end())
     post_target_list_.erase(find);
 }
 
+bool EventTarget::IsPreTargetListEmpty() const {
+  return pre_target_list_.empty();
+}
+
 void EventTarget::OnEvent(Event* event) {
   CHECK_EQ(this, event->target());
   if (target_handler_)
     target_handler_->OnEvent(event);
   else
     EventHandler::OnEvent(event);
 }
 
 void EventTarget::OnKeyEvent(KeyEvent* event) {
   CHECK_EQ(this, event->target());
@@ skipping 44 matching lines @@
   while (target) {
     for (EventHandlerList::iterator it = target->post_target_list_.begin(),
         end = target->post_target_list_.end(); it != end; ++it) {
       list->push_back(*it);
     }
     target = target->GetParentTarget();
   }
 }
 
 }  // namespace ui