Oilpan: add transition types to track interface objects.

Source/core/html/HTMLTrackElement.cpp

 /*
  * Copyright (C) 2011 Google 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 42 matching lines @@
 inline HTMLTrackElement::HTMLTrackElement(Document& document)
     : HTMLElement(trackTag, document)
     , m_loadTimer(this, &HTMLTrackElement::loadTimerFired)
 {
     WTF_LOG(Media, "HTMLTrackElement::HTMLTrackElement - %p", this);
     ScriptWrappable::init(this);
 }
 
 HTMLTrackElement::~HTMLTrackElement()
 {
+#if !ENABLE(OILPAN)
     if (m_track)
         m_track->clearTrackElement();
+#endif
 }
 
 PassRefPtr<HTMLTrackElement> HTMLTrackElement::create(Document& document)
 {
     return adoptRef(new HTMLTrackElement(document));
 }
 
 Node::InsertionNotificationRequest HTMLTrackElement::insertedInto(ContainerNode* insertionPoint)
 {
     WTF_LOG(Media, "HTMLTrackElement::insertedInto");
@@ skipping 190 matching lines @@
 }
 
 HTMLMediaElement* HTMLTrackElement::mediaElement() const
 {
     Element* parent = parentElement();
     if (isHTMLMediaElement(parent))
         return toHTMLMediaElement(parent);
     return 0;
 }
 
+void HTMLTrackElement::trace(Visitor* visitor)
+{
+    visitor->trace(m_track);
+    HTMLElement::trace(visitor);
 }
+
+}