Use Length for the stroke-width property in SVGLayoutStyle

Source/core/layout/svg/LayoutSVGShape.cpp

 /*
  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2008 Rob Buis <buis@kde.org>
  * Copyright (C) 2005, 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Google, Inc.
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  * Copyright (C) 2009 Jeff Schiller <codedread@gmail.com>
  * Copyright (C) 2011 Renata Hodovan <reni@webkit.org>
  * Copyright (C) 2011 University of Szeged
@@ skipping 18 matching lines @@
 #include "core/layout/svg/LayoutSVGShape.h"
 
 #include "core/layout/HitTestRequest.h"
 #include "core/layout/PointerEventsHitRules.h"
 #include "core/layout/svg/SVGLayoutSupport.h"
 #include "core/layout/svg/SVGPathData.h"
 #include "core/layout/svg/SVGResources.h"
 #include "core/layout/svg/SVGResourcesCache.h"
 #include "core/paint/SVGShapePainter.h"
 #include "core/svg/SVGGraphicsElement.h"
+#include "core/svg/SVGLengthContext.h"
 #include "platform/geometry/FloatPoint.h"
 #include "platform/graphics/StrokeData.h"
 #include "wtf/MathExtras.h"
 
 namespace blink {
 
 LayoutSVGShape::LayoutSVGShape(SVGGraphicsElement* node)
     : LayoutSVGModelObject(node)
     , m_needsBoundariesUpdate(false) // Default is false, the cached rects are empty from the beginning.
     , m_needsShapeUpdate(true) // Default is true, so we grab a Path object once from SVGGraphicsElement.
@@ skipping 204 matching lines @@
 {
     m_paintInvalidationBoundingBox = strokeBoundingBox();
     if (strokeWidth() < 1.0f && !m_paintInvalidationBoundingBox.isEmpty())
         m_paintInvalidationBoundingBox.inflate(1);
     SVGLayoutSupport::intersectPaintInvalidationRectWithResources(this, m_paintInvalidationBoundingBox);
 }
 
 float LayoutSVGShape::strokeWidth() const
 {
     SVGLengthContext lengthContext(element());
-    return style()->svgStyle().strokeWidth()->value(lengthContext);
+    return lengthContext.valueForLength(style()->svgStyle().strokeWidth());
 }
 
 }