Const-ify static s_resourceType members in RenderSVGResouce* classes

Source/core/rendering/svg/RenderSVGResourceLinearGradient.cpp

 /*
  * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) Research In Motion Limited 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "config.h"
 
 #include "core/rendering/svg/RenderSVGResourceLinearGradient.h"
 
 #include "core/svg/SVGLinearGradientElement.h"
 
 namespace blink {
 
-const RenderSVGResourceType RenderSVGResourceLinearGradient::s_resourceType = LinearGradientResourceType;
-
 RenderSVGResourceLinearGradient::RenderSVGResourceLinearGradient(SVGLinearGradientElement* node)
     : RenderSVGResourceGradient(node)
 {
 }
 
 RenderSVGResourceLinearGradient::~RenderSVGResourceLinearGradient()
 {
 }
 
 bool RenderSVGResourceLinearGradient::collectGradientAttributes(SVGGradientElement* gradientElement)
@@ skipping 13 matching lines @@
 }
 
 void RenderSVGResourceLinearGradient::buildGradient(GradientData* gradientData) const
 {
     gradientData->gradient = Gradient::create(startPoint(m_attributes), endPoint(m_attributes));
     gradientData->gradient->setSpreadMethod(platformSpreadMethodFromSVGType(m_attributes.spreadMethod()));
     addStops(gradientData, m_attributes.stops());
 }
 
 }