gesture recognizer: Remove the touch-event queue.

ui/base/events/event_constants.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/base/events/event_constants.h"
 
 #include "base/logging.h"
 
 namespace ui {
 
 EventResult EventResultFromTouchStatus(TouchStatus status) {
   switch (status) {
     case TOUCH_STATUS_UNKNOWN:
       return ER_UNHANDLED;
 
     case TOUCH_STATUS_START:
     case TOUCH_STATUS_CONTINUE:
     case TOUCH_STATUS_END:
       return ER_CONSUMED;
 
     case TOUCH_STATUS_QUEUED:
     case TOUCH_STATUS_QUEUED_END:
-      return ER_ASYNC;
+      return ER_CONSUMED;
   }
 
   NOTREACHED();
   return ER_UNHANDLED;
 }
 
 }  // namespace ui