Remove tons of OILPAN.

sky/engine/core/html/HTMLImageElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google 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 41 matching lines @@
     {
         return adoptRef(new ViewportChangeListener(element));
     }
 
     virtual void notifyMediaQueryChanged() override
     {
         if (m_element)
             m_element->notifyViewportChanged();
     }
 
-#if !ENABLE(OILPAN)
     void clearElement() { m_element = nullptr; }
-#endif
-    virtual void trace(Visitor* visitor) override
-    {
-        visitor->trace(m_element);
-        MediaQueryListListener::trace(visitor);
-    }
+
 private:
     explicit ViewportChangeListener(HTMLImageElement* element) : m_element(element) { }
     RawPtr<HTMLImageElement> m_element;
 };
 
 HTMLImageElement::HTMLImageElement(Document& document, bool createdByParser)
     : HTMLElement(HTMLNames::imgTag, document)
     , m_imageLoader(HTMLImageLoader::create(this))
     , m_imageDevicePixelRatio(1.0f)
     , m_elementCreatedByParser(createdByParser)
@@ skipping 15 matching lines @@
 HTMLImageElement::~HTMLImageElement()
 {
 #if !ENABLE(OILPAN)
     if (m_listener) {
         document().mediaQueryMatcher().removeViewportListener(m_listener.get());
         m_listener->clearElement();
     }
 #endif
 }
 
-void HTMLImageElement::trace(Visitor* visitor)
-{
-    visitor->trace(m_imageLoader);
-    visitor->trace(m_listener);
-    HTMLElement::trace(visitor);
-}
-
 void HTMLImageElement::notifyViewportChanged()
 {
     // Re-selecting the source URL in order to pick a more fitting resource
     // And update the image's intrinsic dimensions when the viewport changes.
     // Picking of a better fitting resource is UA dependant, not spec required.
     selectSourceURL(ImageLoader::UpdateSizeChanged);
 }
 
 PassRefPtr<HTMLImageElement> HTMLImageElement::createForJSConstructor(Document& document, int width, int height)
 {
@@ skipping 293 matching lines @@
     }
     imageLoader().updateFromElement(behavior);
 }
 
 const KURL& HTMLImageElement::sourceURL() const
 {
     return cachedImage()->response().url();
 }
 
 }