This CL clean up patch in SVGElements.

Source/core/svg/SVGPathElement.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 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,
@@ skipping 69 matching lines @@
     PassRefPtrWillBeRawPtr<SVGPathSegCurvetoCubicSmoothAbs> createSVGPathSegCurvetoCubicSmoothAbs(float x, float y, float x2, float y2);
     PassRefPtrWillBeRawPtr<SVGPathSegCurvetoCubicSmoothRel> createSVGPathSegCurvetoCubicSmoothRel(float x, float y, float x2, float y2);
     PassRefPtrWillBeRawPtr<SVGPathSegCurvetoQuadraticSmoothAbs> createSVGPathSegCurvetoQuadraticSmoothAbs(float x, float y);
     PassRefPtrWillBeRawPtr<SVGPathSegCurvetoQuadraticSmoothRel> createSVGPathSegCurvetoQuadraticSmoothRel(float x, float y);
 
     // Used in the bindings only.
     SVGPathSegListTearOff* pathSegList() { return m_pathSegList->baseVal(); }
     SVGPathSegListTearOff* animatedPathSegList() { return m_pathSegList->animVal(); }
 
     // FIXME: https://bugs.webkit.org/show_bug.cgi?id=15412 - Implement normalized path segment lists!
-    SVGPathSegListTearOff* normalizedPathSegList() { return 0; }
-    SVGPathSegListTearOff* animatedNormalizedPathSegList() { return 0; }
+    SVGPathSegListTearOff* normalizedPathSegList() { return nullptr; }
+    SVGPathSegListTearOff* animatedNormalizedPathSegList() { return nullptr; }
 
     const SVGPathByteStream* pathByteStream() const { return m_pathSegList->currentValue()->byteStream(); }
 
     void pathSegListChanged(ListModification = ListModificationUnknown);
 
     virtual FloatRect getBBox() override;
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     explicit SVGPathElement(Document&);
 
     virtual void svgAttributeChanged(const QualifiedName&) override;
 
     virtual Node::InsertionNotificationRequest insertedInto(ContainerNode*) override;
     virtual void removedFrom(ContainerNode*) override;
 
     void invalidateMPathDependencies();
 
     RefPtrWillBeMember<SVGAnimatedNumber> m_pathLength;
     RefPtrWillBeMember<SVGAnimatedPath> m_pathSegList;
 };
 
 } // namespace blink
 
 #endif // SVGPathElement_h