Simplify SVGPathByteStream-based path-query functions

Source/core/svg/SVGPathUtilities.h

 /*
  * Copyright (C) Research In Motion Limited 2010, 2012. 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
@@ skipping 29 matching lines @@
 // SVGPathSegList/String -> SVGPathByteStream
 bool appendSVGPathByteStreamFromSVGPathSeg(PassRefPtrWillBeRawPtr<SVGPathSeg>, SVGPathByteStream&, PathParsingMode);
 bool buildSVGPathByteStreamFromString(const String&, SVGPathByteStream&, PathParsingMode);
 
 // SVGPathByteStream/SVGPathSegList -> String
 bool buildStringFromByteStream(const SVGPathByteStream&, String&, PathParsingMode);
 bool buildStringFromSVGPathSegList(PassRefPtrWillBeRawPtr<SVGPathSegList>, String&, PathParsingMode);
 
 bool addToSVGPathByteStream(SVGPathByteStream&, const SVGPathByteStream&, unsigned repeatCount = 1);
 
-bool getSVGPathSegAtLengthFromSVGPathByteStream(const SVGPathByteStream&, float length, unsigned& pathSeg);
-bool getTotalLengthOfSVGPathByteStream(const SVGPathByteStream&, float& totalLength);
-bool getPointAtLengthOfSVGPathByteStream(const SVGPathByteStream&, float length, FloatPoint&);
+unsigned getSVGPathSegAtLengthFromSVGPathByteStream(const SVGPathByteStream&, float length);
+float getTotalLengthOfSVGPathByteStream(const SVGPathByteStream&);
+FloatPoint getPointAtLengthOfSVGPathByteStream(const SVGPathByteStream&, float length);
 
 } // namespace blink
 
 #endif // SVGPathUtilities_h