Simplify SVGPathByteStream-based path-query functions

Source/core/svg/SVGPathElement.cpp

 /*
  * 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 50 matching lines @@
 {
     visitor->trace(m_pathLength);
     visitor->trace(m_pathSegList);
     SVGGeometryElement::trace(visitor);
 }
 
 DEFINE_NODE_FACTORY(SVGPathElement)
 
 float SVGPathElement::getTotalLength()
 {
-    float totalLength = 0;
-    getTotalLengthOfSVGPathByteStream(*pathByteStream(), totalLength);
-    return totalLength;
+    return getTotalLengthOfSVGPathByteStream(*pathByteStream());
 }
 
 PassRefPtrWillBeRawPtr<SVGPointTearOff> SVGPathElement::getPointAtLength(float length)
 {
-    FloatPoint point;
-    getPointAtLengthOfSVGPathByteStream(*pathByteStream(), length, point);
+    FloatPoint point = getPointAtLengthOfSVGPathByteStream(*pathByteStream(), length);
     return SVGPointTearOff::create(SVGPoint::create(point), 0, PropertyIsNotAnimVal);
 }
 
 unsigned SVGPathElement::getPathSegAtLength(float length)
 {
-    unsigned pathSeg = 0;
-    getSVGPathSegAtLengthFromSVGPathByteStream(*pathByteStream(), length, pathSeg);
-    return pathSeg;
+    return getSVGPathSegAtLengthFromSVGPathByteStream(*pathByteStream(), length);
 }
 
 PassRefPtrWillBeRawPtr<SVGPathSegClosePath> SVGPathElement::createSVGPathSegClosePath()
 {
     return SVGPathSegClosePath::create(0);
 }
 
 PassRefPtrWillBeRawPtr<SVGPathSegMovetoAbs> SVGPathElement::createSVGPathSegMovetoAbs(float x, float y)
 {
     return SVGPathSegMovetoAbs::create(0, x, y);
@@ skipping 187 matching lines @@
 
     // FIXME: Eventually we should support getBBox for detached elements.
     if (!renderer())
         return FloatRect();
 
     RenderSVGShape* renderer = toRenderSVGShape(this->renderer());
     return renderer->path().boundingRect();
 }
 
 } // namespace blink