InlinedVisitor: Migrate html to use inlined tracing

Source/core/html/HTMLVideoElement.h

 /*
  * Copyright (C) 2007, 2008, 2009, 2010 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 32 matching lines @@
 // GL types as defined in OpenGL ES 2.0 header file gl2.h from khronos.org.
 // That header cannot be included directly due to a conflict with NPAPI headers.
 // See crbug.com/328085.
 typedef unsigned GLenum;
 typedef int GC3Dint;
 
 class HTMLVideoElement final : public HTMLMediaElement, public CanvasImageSource {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static PassRefPtrWillBeRawPtr<HTMLVideoElement> create(Document&);
-    virtual void trace(Visitor*) override;
+    DECLARE_VIRTUAL_TRACE();
 
     unsigned videoWidth() const;
     unsigned videoHeight() const;
 
     // Fullscreen
     void webkitEnterFullscreen(ExceptionState&);
     void webkitExitFullscreen();
     bool webkitSupportsFullscreen();
     bool webkitDisplayingFullscreen();
 
@@ skipping 43 matching lines @@
     virtual void setDisplayMode(DisplayMode) override;
 
     OwnPtrWillBeMember<HTMLImageLoader> m_imageLoader;
 
     AtomicString m_defaultPosterURL;
 };
 
 } // namespace blink
 
 #endif // HTMLVideoElement_h