Oilpan: Remove GC_INFO_{DEFINE,DECLARE} macros

Source/modules/mediasource/VideoPlaybackQuality.h

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 22 matching lines @@
 
 #include "heap/Handle.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 
 namespace WebCore {
 
 class Document;
 
 class VideoPlaybackQuality : public RefCountedWillBeGarbageCollected<VideoPlaybackQuality> {
-    DECLARE_GC_INFO;
 public:
     static PassRefPtrWillBeRawPtr<VideoPlaybackQuality> create(const Document&, unsigned totalVideoFrames, unsigned droppedVideoFrames, unsigned corruptedVideoFrames);
 
     double creationTime() const { return m_creationTime; }
     unsigned totalVideoFrames() const { return m_totalVideoFrames; }
     unsigned droppedVideoFrames() const { return m_droppedVideoFrames; }
     unsigned corruptedVideoFrames() const { return m_corruptedVideoFrames; }
 
     void trace(Visitor*) { }
 
 private:
     VideoPlaybackQuality(const Document&, unsigned totalVideoFrames, unsigned droppedVideoFrames, unsigned corruptedVideoFrames);
 
     double m_creationTime;
     unsigned m_totalVideoFrames;
     unsigned m_droppedVideoFrames;
     unsigned m_corruptedVideoFrames;
 };
 
 }
 
 #endif