[oilpan] Figure out lifetime of remaining Node raw pointers (Part 2)

Source/core/html/track/TextTrackList.cpp

 /*
  * Copyright (C) 2011, 2012 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 163 matching lines @@
     } else if (track->trackType() == TextTrack::InBand) {
         // Insert tracks added for in-band in the media file order.
         size_t index = static_cast<InbandTextTrack*>(track.get())->inbandTrackIndex();
         m_inbandTracks.insert(index, track);
     } else
         ASSERT_NOT_REACHED();
 
     invalidateTrackIndexesAfterTrack(track.get());
 
     ASSERT(!track->mediaElement() || track->mediaElement() == m_owner);
-    track->setMediaElement(Handle<HTMLMediaElement>(m_owner));
+    track->setMediaElement(adoptRawResult(m_owner));
 
     scheduleAddTrackEvent(track.release());
 }
 
 void TextTrackList::remove(TextTrack* track)
 {
     Vector<RefPtr<TextTrack> >* tracks = 0;
 
     if (track->trackType() == TextTrack::TrackElement)
         tracks = &m_elementTracks;
@@ skipping 66 matching lines @@
     size_t count = pendingEvents.size();
     for (size_t index = 0; index < count; ++index)
         dispatchEvent(pendingEvents[index].release(), IGNORE_EXCEPTION);
     --m_dispatchingEvents;
 }
 
 Result<Node> TextTrackList::owner() const
 {
     return adoptRawResult(m_owner);
 }