[oilpan] The Node hierarchy should have correct accept method chains

Source/core/html/HTMLTrackElement.h

 /*
  * 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 16 matching lines @@
 #define HTMLTrackElement_h
 
 #include "core/html/HTMLElement.h"
 #include "core/html/track/LoadableTextTrack.h"
 #include "core/html/track/TextTrack.h"
 
 namespace WebCore {
 
 class HTMLMediaElement;
 
 class HTMLTrackElement : public HTMLElement, public TextTrackClient {

[Mads Ager (chromium), 2013/07/25 13:35:12]

Another one. When we get TextTrackClients that we need to visit we will have to
have a trait for it to get to the start of the object.

 public:
     static PassRefPtr<HTMLTrackElement> create(const QualifiedName&, Handle<Document>);
 
     KURL src() const;
     void setSrc(const String&);
 
     String kind();
     void setKind(const String&);
 
     String srclang() const;
@@ skipping 11 matching lines @@
 
     TextTrack* track();
 
     void scheduleLoad();
 
     enum LoadStatus { Failure, Success };
     virtual void didCompleteLoad(LoadableTextTrack*, LoadStatus);
 
     const AtomicString& mediaElementCrossOriginAttribute() const;
 
+    virtual void acceptHeapVisitor(Visitor*) const OVERRIDE;
+
 private:
     HTMLTrackElement(const QualifiedName&, Handle<Document>);
     virtual ~HTMLTrackElement();
 
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
 
     virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
 
     virtual void removedFrom(ContainerNode*) OVERRIDE;
     virtual bool isURLAttribute(const Attribute&) const OVERRIDE;
@@ skipping 13 matching lines @@
     LoadableTextTrack* ensureTrack();
     virtual bool canLoadUrl(const KURL&);
 
     RefPtr<LoadableTextTrack> m_track;
     Timer<HTMLTrackElement> m_loadTimer;
 };
 
 }
 
 #endif