Adds SVGImageElement as a CanvasImageSource

third_party/WebKit/Source/core/svg/SVGImageElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Rob Buis <buis@kde.org>
  * Copyright (C) 2006 Alexander Kellett <lypanov@kde.org>
  *
  * 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 177 matching lines @@
     // A previous loader update may have failed to actually fetch the image if
     // the document was inactive. In that case, force a re-update (but don't
     // clear previous errors).
     if (!imageLoader().image())
       imageLoader().updateFromElement();
   }
 
   return InsertionDone;
 }
 
+FloatSize SVGImageElement::sourceDefaultObjectSize() {
+  if (layoutObject())
+    return toLayoutSVGImage(layoutObject())->objectBoundingBox().size();
+  SVGLengthContext lengthContext(this);
+  return FloatSize(m_width->currentValue()->value(lengthContext),
+                   m_height->currentValue()->value(lengthContext));
+}
+
 const AtomicString SVGImageElement::imageSourceURL() const {
   return AtomicString(hrefString());
 }
 
 void SVGImageElement::didMoveToNewDocument(Document& oldDocument) {
   imageLoader().elementDidMoveToNewDocument();
   SVGGraphicsElement::didMoveToNewDocument(oldDocument);
 }
 
 }  // namespace blink