Implement HTMLMarqueeElement's animation in private scripts

Source/core/html/HTMLMarqueeElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2007, 2010 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 96 matching lines @@
     } else if (name == behaviorAttr) {
         if (!value.isEmpty())
             addPropertyToPresentationAttributeStyle(style, CSSPropertyInternalMarqueeStyle, value);
     } else if (name == directionAttr) {
         if (!value.isEmpty())
             addPropertyToPresentationAttributeStyle(style, CSSPropertyInternalMarqueeDirection, value);
     } else
         HTMLElement::collectStyleForPresentationAttribute(name, value, style);
 }
 
-void HTMLMarqueeElement::start()
-{
-    if (RenderMarquee* marqueeRenderer = renderMarquee())
-        marqueeRenderer->start();
-}
-
-void HTMLMarqueeElement::stop()
-{
-    if (RenderMarquee* marqueeRenderer = renderMarquee())
-        marqueeRenderer->stop();
-}
-
 void HTMLMarqueeElement::suspend()
 {
     if (RenderMarquee* marqueeRenderer = renderMarquee())
         marqueeRenderer->suspend();
 }
 
 void HTMLMarqueeElement::resume()
 {
     if (RenderMarquee* marqueeRenderer = renderMarquee())
         marqueeRenderer->updateMarqueePosition();
@@ skipping 17 matching lines @@
         return;
 
     document().updateLayout();
 
     // The updateLayout() could have destroyed renderer(), so this re-check is very important.
     if (renderer())
         toRenderMarquee(renderer())->timerFired();
 }
 
 } // namespace WebCore