Avoid duplicating the CSS property mapping for SVG pres. attrs.

third_party/WebKit/Source/core/svg/SVGAnimatedPath.h

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 29 matching lines @@
  public:
   ~SVGAnimatedPath() override;
 
   static SVGAnimatedPath* create(
       SVGElement* contextElement,
       const QualifiedName& attributeName,
       CSSPropertyID cssPropertyId = CSSPropertyInvalid) {
     return new SVGAnimatedPath(contextElement, attributeName, cssPropertyId);
   }
 
+  const CSSValue* cssValue() const;
+
  protected:
   SVGAnimatedPath(SVGElement*,
                   const QualifiedName&,
                   CSSPropertyID = CSSPropertyInvalid);
 };
 
 }  // namespace blink
 
 #endif  // SVGAnimatedPath_h