Make UA dblclick events composed events

third_party/WebKit/Source/core/events/MouseEvent.cpp

 /*
  * Copyright (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2003, 2005, 2006, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 339 matching lines @@
   // event. This is not part of the DOM specs, but is used for compatibility
   // with the ondblclick="" attribute. This is treated as a separate event in
   // other DOM-compliant browsers like Firefox, and so we do the same.
   MouseEvent* doubleClickEvent = MouseEvent::create();
   doubleClickEvent->initMouseEventInternal(
       EventTypeNames::dblclick, mouseEvent.bubbles(), mouseEvent.cancelable(),
       mouseEvent.view(), mouseEvent.detail(), mouseEvent.screenX(),
       mouseEvent.screenY(), mouseEvent.clientX(), mouseEvent.clientY(),
       mouseEvent.modifiers(), mouseEvent.button(), relatedTarget,
       mouseEvent.sourceCapabilities(), mouseEvent.buttons());
+  doubleClickEvent->setComposed(mouseEvent.composed());
 
   // Inherit the trusted status from the original event.
   doubleClickEvent->setTrusted(mouseEvent.isTrusted());
   if (mouseEvent.defaultHandled())
     doubleClickEvent->setDefaultHandled();
   DispatchEventResult doubleClickDispatchResult =
       EventDispatcher::dispatchEvent(
           dispatcher.node(),
           MouseEventDispatchMediator::create(doubleClickEvent));
   if (doubleClickDispatchResult != DispatchEventResult::NotCanceled)
     return doubleClickDispatchResult;
   return dispatchResult;
 }
 
 }  // namespace blink