Remove SetWrapperReferenceTo and SetWrapperReferenceFrom

third_party/WebKit/Source/core/html/track/TrackBase.h

 /*
  * Copyright (C) 2011 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 34 matching lines @@
   WebMediaPlayer::TrackType type() const { return m_type; }
 
   const AtomicString& kind() const { return m_kind; }
   AtomicString label() const { return m_label; }
   AtomicString language() const { return m_language; }
 
   void setMediaElement(HTMLMediaElement* mediaElement) {
     m_mediaElement = mediaElement;
   }
   HTMLMediaElement* mediaElement() const { return m_mediaElement; }
-  Node* owner() const;
 
   DECLARE_VIRTUAL_TRACE();
 
  protected:
   TrackBase(WebMediaPlayer::TrackType,
             const AtomicString& kind,
             const AtomicString& label,
             const AtomicString& language,
             const String& id);
 
   WebMediaPlayer::TrackType m_type;
   AtomicString m_kind;
   AtomicString m_label;
   AtomicString m_language;
   String m_id;
   Member<HTMLMediaElement> m_mediaElement;
 };
 
 #define DEFINE_TRACK_TYPE_CASTS(thisType, predicate)                        \
   DEFINE_TYPE_CASTS(thisType, TrackBase, track, track->type() == predicate, \
                     track.type() == predicate)
 
 }  // namespace blink
 
 #endif  // TrackBase_h