[v8 gc] Introduce a base class for all objects that can have pending activity

third_party/WebKit/Source/core/html/HTMLMediaElement.cpp

 /*
  * Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 291 matching lines @@
     s_mediaStreamRegistry = registry;
 }
 
 bool HTMLMediaElement::isMediaStreamURL(const String& url)
 {
     return s_mediaStreamRegistry ? s_mediaStreamRegistry->contains(url) : false;
 }
 
 HTMLMediaElement::HTMLMediaElement(const QualifiedName& tagName, Document& document)
     : HTMLElement(tagName, document)
+    , ActiveScriptWrappable(this)
     , ActiveDOMObject(&document)
     , m_loadTimer(this, &HTMLMediaElement::loadTimerFired)
     , m_progressEventTimer(this, &HTMLMediaElement::progressEventTimerFired)
     , m_playbackProgressTimer(this, &HTMLMediaElement::playbackProgressTimerFired)
     , m_audioTracksTimer(this, &HTMLMediaElement::audioTracksTimerFired)
     , m_playedTimeRanges()
     , m_asyncEventQueue(GenericEventQueue::create(this))
     , m_playbackRate(1.0f)
     , m_defaultPlaybackRate(1.0f)
     , m_networkState(NETWORK_EMPTY)
@@ skipping 3489 matching lines @@
 {
     visitor->trace(m_client);
 }
 
 DEFINE_TRACE(HTMLMediaElement::AudioSourceProviderImpl)
 {
     visitor->trace(m_client);
 }
 
 } // namespace blink