This CL clean up patch in SVGElements.

Source/core/svg/SVGViewSpec.cpp

 /*
  * Copyright (C) 2007, 2010 Rob Buis <buis@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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 72 matching lines @@
 {
     m_transform = nullptr;
     clearViewBox();
     clearPreserveAspectRatio();
     m_contextElement = nullptr;
 }
 
 SVGElement* SVGViewSpec::viewTarget() const
 {
     if (!m_contextElement)
-        return 0;
+        return nullptr;
     Element* element = m_contextElement->treeScope().getElementById(AtomicString(m_viewTargetString));
     if (!element || !element->isSVGElement())
-        return 0;
+        return nullptr;
     return toSVGElement(element);
 }
 
 String SVGViewSpec::viewBoxString() const
 {
     if (!viewBox())
         return String();
 
     return viewBox()->currentValue()->valueAsString();
 }
@@ skipping 104 matching lines @@
             ptr++;
     }
 
     if (ptr >= end || *ptr != ')')
         return false;
 
     return true;
 }
 
 }