[svg2] Make 'rx' and 'ry' presentation attributes

Source/core/layout/svg/LayoutSVGRect.cpp

 /*
  * Copyright (C) 2011 University of Szeged
  * Copyright (C) 2011 Renata Hodovan <reni@webkit.org>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 46 matching lines @@
     FloatSize boundingBoxSize(rect->width()->currentValue()->value(lengthContext), rect->height()->currentValue()->value(lengthContext));
 
     // Spec: "A negative value is an error."
     if (boundingBoxSize.width() < 0 || boundingBoxSize.height() < 0)
         return;
 
     // Spec: "A value of zero disables rendering of the element."
     if (!boundingBoxSize.isEmpty()) {
         // Fallback to LayoutSVGShape and path-based hit detection if the rect
         // has rounded corners or a non-scaling or non-simple stroke.
-        if (rect->rx()->currentValue()->value(lengthContext) > 0
-            || rect->ry()->currentValue()->value(lengthContext) > 0
+        if (lengthContext.valueForLength(style()->svgStyle().rx(), styleRef(), LengthModeWidth) > 0
+            || lengthContext.valueForLength(style()->svgStyle().ry(), styleRef(), LengthModeHeight) > 0
             || hasNonScalingStroke()
             || !definitelyHasSimpleStroke()) {
             LayoutSVGShape::updateShapeFromElement();
             m_usePathFallback = true;
             return;
         }
     }
 
     m_fillBoundingBox = FloatRect(
         FloatPoint(
@@ skipping 55 matching lines @@
     // An approximation of sqrt(2) is used here because at certain precise
     // miterlimits, the join style used might not be correct (e.g. a miterlimit
     // of 1.4142135 should result in bevel joins, but may be drawn using miter
     // joins).
     return svgStyle.strokeDashArray()->isEmpty()
         && svgStyle.joinStyle() == MiterJoin
         && svgStyle.strokeMiterLimit() >= 1.5;
 }
 
 }