Constify and use LayoutStyle reference in layout/

Source/core/rendering/svg/RenderSVGShape.cpp

Index: Source/core/rendering/svg/RenderSVGShape.cpp
diff --git a/Source/core/rendering/svg/RenderSVGShape.cpp b/Source/core/rendering/svg/RenderSVGShape.cpp
index e8ac872e132e2cc0571e3a7b62b3af4cbba1b47f..98038f2473ef753138cf85e363fcc60da220adc7 100644
--- a/Source/core/rendering/svg/RenderSVGShape.cpp
+++ b/Source/core/rendering/svg/RenderSVGShape.cpp
@@ -76,7 +76,7 @@ bool RenderSVGShape::shapeDependentStrokeContains(const FloatPoint& point)
 {
     ASSERT(m_path);
     StrokeData strokeData;
-    SVGLayoutSupport::applyStrokeStyleToStrokeData(&strokeData, style(), this);
+    SVGLayoutSupport::applyStrokeStyleToStrokeData(strokeData, styleRef(), *this);
 
     if (hasNonScalingStroke()) {
         AffineTransform nonScalingTransform = nonScalingStrokeTransform();
@@ -233,7 +233,7 @@ FloatRect RenderSVGShape::calculateStrokeBoundingBox() const
 
     if (style()->svgStyle().hasStroke()) {
         StrokeData strokeData;
-        SVGLayoutSupport::applyStrokeStyleToStrokeData(&strokeData, style(), this);
+        SVGLayoutSupport::applyStrokeStyleToStrokeData(strokeData, styleRef(), *this);
         if (hasNonScalingStroke()) {
             AffineTransform nonScalingTransform = nonScalingStrokeTransform();
             if (nonScalingTransform.isInvertible()) {