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

Source/core/svg/SVGEllipseElement.h

Index: Source/core/svg/SVGEllipseElement.h
diff --git a/Source/core/svg/SVGEllipseElement.h b/Source/core/svg/SVGEllipseElement.h
index e0cc981a96ce28f09fef7b8c31fd618d50dacb71..384333c216f00d6c015be27b0e82c38c251e1a7a 100644
--- a/Source/core/svg/SVGEllipseElement.h
+++ b/Source/core/svg/SVGEllipseElement.h
@@ -34,6 +34,11 @@ class SVGEllipseElement FINAL : public SVGGeometryElement,
 public:
     static PassRefPtr<SVGEllipseElement> create(Document&);
 
+    SVGAnimatedLength* cx() const { return m_cx.get(); }
+    SVGAnimatedLength* cy() const { return m_cy.get(); }
+    SVGAnimatedLength* rx() const { return m_rx.get(); }
+    SVGAnimatedLength* ry() const { return m_ry.get(); }
+
 private:
     explicit SVGEllipseElement(Document&);
 
@@ -48,11 +53,11 @@ private:
 
     virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
 
+    RefPtr<SVGAnimatedLength> m_cx;
+    RefPtr<SVGAnimatedLength> m_cy;
+    RefPtr<SVGAnimatedLength> m_rx;
+    RefPtr<SVGAnimatedLength> m_ry;
     BEGIN_DECLARE_ANIMATED_PROPERTIES(SVGEllipseElement)
-        DECLARE_ANIMATED_LENGTH(Cx, cx)
-        DECLARE_ANIMATED_LENGTH(Cy, cy)
-        DECLARE_ANIMATED_LENGTH(Rx, rx)
-        DECLARE_ANIMATED_LENGTH(Ry, ry)
         DECLARE_ANIMATED_BOOLEAN(ExternalResourcesRequired, externalResourcesRequired)
     END_DECLARE_ANIMATED_PROPERTIES
 };