Use SVGLength-references in the SVGLengthContext API

Source/core/layout/svg/LayoutSVGResourceRadialGradient.cpp

Index: Source/core/layout/svg/LayoutSVGResourceRadialGradient.cpp
diff --git a/Source/core/layout/svg/LayoutSVGResourceRadialGradient.cpp b/Source/core/layout/svg/LayoutSVGResourceRadialGradient.cpp
index d16461f7cfeeb1c084208029e2cc8c46a1794f40..3725146ee9a768f77afca6a20eca65f438c8fe2f 100644
--- a/Source/core/layout/svg/LayoutSVGResourceRadialGradient.cpp
+++ b/Source/core/layout/svg/LayoutSVGResourceRadialGradient.cpp
@@ -51,22 +51,22 @@ bool LayoutSVGResourceRadialGradient::collectGradientAttributes(SVGGradientEleme
 
 FloatPoint LayoutSVGResourceRadialGradient::centerPoint(const RadialGradientAttributes& attributes) const
 {
-    return SVGLengthContext::resolvePoint(element(), attributes.gradientUnits(), attributes.cx(), attributes.cy());
+    return SVGLengthContext::resolvePoint(element(), attributes.gradientUnits(), *attributes.cx(), *attributes.cy());
 }
 
 FloatPoint LayoutSVGResourceRadialGradient::focalPoint(const RadialGradientAttributes& attributes) const
 {
-    return SVGLengthContext::resolvePoint(element(), attributes.gradientUnits(), attributes.fx(), attributes.fy());
+    return SVGLengthContext::resolvePoint(element(), attributes.gradientUnits(), *attributes.fx(), *attributes.fy());
 }
 
 float LayoutSVGResourceRadialGradient::radius(const RadialGradientAttributes& attributes) const
 {
-    return SVGLengthContext::resolveLength(element(), attributes.gradientUnits(), attributes.r());
+    return SVGLengthContext::resolveLength(element(), attributes.gradientUnits(), *attributes.r());
 }
 
 float LayoutSVGResourceRadialGradient::focalRadius(const RadialGradientAttributes& attributes) const
 {
-    return SVGLengthContext::resolveLength(element(), attributes.gradientUnits(), attributes.fr());
+    return SVGLengthContext::resolveLength(element(), attributes.gradientUnits(), *attributes.fr());
 }
 
 void LayoutSVGResourceRadialGradient::buildGradient(GradientData* gradientData) const