Add StylePath and use it to store 'd' in ComputedStyle

third_party/WebKit/Source/core/style/SVGComputedStyleDefs.cpp

 /*
     Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
                   2004, 2005, 2007 Rob Buis <buis@kde.org>
     Copyright (C) Research In Motion Limited 2010. All rights reserved.
 
     Based on khtml code by:
     Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
     Copyright (C) 1999-2003 Lars Knoll (knoll@kde.org)
     Copyright (C) 2002-2003 Dirk Mueller (mueller@kde.org)
     Copyright (C) 2002 Apple Computer, Inc.
@@ skipping 182 matching lines @@
 }
 
 bool StyleInheritedResourceData::operator==(const StyleInheritedResourceData& other) const
 {
     return markerStart == other.markerStart
         && markerMid == other.markerMid
         && markerEnd == other.markerEnd;
 }
 
 StyleLayoutData::StyleLayoutData()
-    : d(CSSPathValue::emptyPathValue())
+    : d(SVGComputedStyle::initialD())
     , cx(SVGComputedStyle::initialCx())
     , cy(SVGComputedStyle::initialCy())
     , x(SVGComputedStyle::initialX())
     , y(SVGComputedStyle::initialY())
     , r(SVGComputedStyle::initialR())
     , rx(SVGComputedStyle::initialRx())
     , ry(SVGComputedStyle::initialRy())
 {
 }
 
@@ skipping 21 matching lines @@
         && y == other.y
         && r == other.r
         && rx == other.rx
         && ry == other.ry
         && cx == other.cx
         && cy == other.cy
         && d->equals(*other.d);
 }
 
 }