[SVG] SVGLength{,List} migration to new SVG property impl.

Source/core/svg/SVGRectElement.h

Index: Source/core/svg/SVGRectElement.h
diff --git a/Source/core/svg/SVGRectElement.h b/Source/core/svg/SVGRectElement.h
index 1a500884f4e959da3c1591f7c4a887c35293c7af..9ae3e6ddbe8b63d308d9540d807835e2ff4d9b75 100644
--- a/Source/core/svg/SVGRectElement.h
+++ b/Source/core/svg/SVGRectElement.h
@@ -34,6 +34,13 @@ class SVGRectElement FINAL : public SVGGeometryElement,
 public:
     static PassRefPtr<SVGRectElement> create(Document&);
 
+    SVGAnimatedLength* x() const { return m_x.get(); }
+    SVGAnimatedLength* y() const { return m_y.get(); }
+    SVGAnimatedLength* width() const { return m_width.get(); }
+    SVGAnimatedLength* height() const { return m_height.get(); }
+    SVGAnimatedLength* rx() const { return m_rx.get(); }
+    SVGAnimatedLength* ry() const { return m_ry.get(); }
+
 private:
     explicit SVGRectElement(Document&);
 
@@ -48,13 +55,13 @@ private:
 
     virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
 
+    RefPtr<SVGAnimatedLength> m_x;
+    RefPtr<SVGAnimatedLength> m_y;
+    RefPtr<SVGAnimatedLength> m_width;
+    RefPtr<SVGAnimatedLength> m_height;
+    RefPtr<SVGAnimatedLength> m_rx;
+    RefPtr<SVGAnimatedLength> m_ry;
     BEGIN_DECLARE_ANIMATED_PROPERTIES(SVGRectElement)
-        DECLARE_ANIMATED_LENGTH(X, x)
-        DECLARE_ANIMATED_LENGTH(Y, y)
-        DECLARE_ANIMATED_LENGTH(Width, width)
-        DECLARE_ANIMATED_LENGTH(Height, height)
-        DECLARE_ANIMATED_LENGTH(Rx, rx)
-        DECLARE_ANIMATED_LENGTH(Ry, ry)
         DECLARE_ANIMATED_BOOLEAN(ExternalResourcesRequired, externalResourcesRequired)
     END_DECLARE_ANIMATED_PROPERTIES
 };