Oilpan: Prepare to move ImageLoader and its subclasses to Oilpan heap.

Source/core/html/HTMLVideoElement.cpp

 /*
  * 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 43 matching lines @@
 }
 
 PassRefPtrWillBeRawPtr<HTMLVideoElement> HTMLVideoElement::create(Document& document)
 {
     RefPtrWillBeRawPtr<HTMLVideoElement> video = adoptRefWillBeRefCountedGarbageCollected(new HTMLVideoElement(document));
     video->ensureUserAgentShadowRoot();
     video->suspendIfNeeded();
     return video.release();
 }
 
+void HTMLVideoElement::trace(Visitor* visitor)
+{
+    visitor->trace(m_imageLoader);
+    HTMLMediaElement::trace(visitor);
+}
+
 bool HTMLVideoElement::rendererIsNeeded(const RenderStyle& style)
 {
     return HTMLElement::rendererIsNeeded(style);
 }
 
 RenderObject* HTMLVideoElement::createRenderer(RenderStyle*)
 {
     return new RenderVideo(this);
 }
 
 void HTMLVideoElement::attach(const AttachContext& context)
 {
     HTMLMediaElement::attach(context);
 
     updateDisplayState();
     if (shouldDisplayPosterImage()) {
         if (!m_imageLoader)
-            m_imageLoader = adoptPtr(new HTMLImageLoader(this));
+            m_imageLoader = HTMLImageLoader::create(this);
         m_imageLoader->updateFromElement();
         if (renderer())
             toRenderImage(renderer())->imageResource()->setImageResource(m_imageLoader->image());
     }
 }
 
 void HTMLVideoElement::collectStyleForPresentationAttribute(const QualifiedName& name, const AtomicString& value, MutableStylePropertySet* style)
 {
     if (name == widthAttr)
         addHTMLLengthToStyle(style, CSSPropertyWidth, value);
@@ skipping 11 matching lines @@
 }
 
 void HTMLVideoElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
 {
     if (name == posterAttr) {
         // Force a poster recalc by setting m_displayMode to Unknown directly before calling updateDisplayState.
         HTMLMediaElement::setDisplayMode(Unknown);
         updateDisplayState();
         if (shouldDisplayPosterImage()) {
             if (!m_imageLoader)
-                m_imageLoader = adoptPtr(new HTMLImageLoader(this));
+                m_imageLoader = HTMLImageLoader::create(this);
             m_imageLoader->updateFromElementIgnoringPreviousError();
         } else {
             if (renderer())
                 toRenderImage(renderer())->imageResource()->setImageResource(0);
         }
         // Notify the player when the poster image URL changes.
         if (player())
             player()->setPoster(posterImageURL());
     } else
         HTMLMediaElement::parseAttribute(name, value);
@@ skipping 177 matching lines @@
 {
     return !hasSingleSecurityOrigin() || (!(webMediaPlayer() && webMediaPlayer()->didPassCORSAccessCheck()) && destinationSecurityOrigin->taintsCanvas(currentSrc()));
 }
 
 FloatSize HTMLVideoElement::sourceSize() const
 {
     return FloatSize(videoWidth(), videoHeight());
 }
 
 }