Make RenderObject::style() return a const object

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 144 matching lines @@
 }
 
 bool SVGImageElement::selfHasRelativeLengths() const
 {
     return m_x->currentValue()->isRelative()
         || m_y->currentValue()->isRelative()
         || m_width->currentValue()->isRelative()
         || m_height->currentValue()->isRelative();
 }
 
-RenderObject* SVGImageElement::createRenderer(RenderStyle*)
+RenderObject* SVGImageElement::createRenderer(const RenderStyle*)
 {
     return new RenderSVGImage(this);
 }
 
 bool SVGImageElement::haveLoadedRequiredResources()
 {
     return !m_needsLoaderURIUpdate && !imageLoader().hasPendingActivity();
 }
 
 void SVGImageElement::attach(const AttachContext& context)
@@ skipping 34 matching lines @@
     return AtomicString(hrefString());
 }
 
 void SVGImageElement::didMoveToNewDocument(Document& oldDocument)
 {
     imageLoader().elementDidMoveToNewDocument();
     SVGGraphicsElement::didMoveToNewDocument(oldDocument);
 }
 
 } // namespace blink