Const-ify static s_resourceType members in RenderSVGResouce* classes

Source/core/rendering/svg/RenderSVGResourceMarker.cpp

 /*
  * Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Rob Buis <buis@kde.org>
  * Copyright (C) Research In Motion Limited 2009-2010. 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 10 matching lines @@
 
 #include "config.h"
 #include "core/rendering/svg/RenderSVGResourceMarker.h"
 
 #include "core/rendering/svg/RenderSVGContainer.h"
 #include "core/rendering/svg/SVGRenderSupport.h"
 #include "wtf/TemporaryChange.h"
 
 namespace blink {
 
-const RenderSVGResourceType RenderSVGResourceMarker::s_resourceType = MarkerResourceType;
-
 RenderSVGResourceMarker::RenderSVGResourceMarker(SVGMarkerElement* node)
     : RenderSVGResourceContainer(node)
 {
 }
 
 RenderSVGResourceMarker::~RenderSVGResourceMarker()
 {
 }
 
 void RenderSVGResourceMarker::layout()
@@ skipping 106 matching lines @@
     SVGMarkerElement* marker = toSVGMarkerElement(element());
     ASSERT(marker);
 
     SVGLengthContext lengthContext(marker);
     float w = marker->markerWidth()->currentValue()->value(lengthContext);
     float h = marker->markerHeight()->currentValue()->value(lengthContext);
     m_viewport = FloatRect(0, 0, w, h);
 }
 
 }