Introduce SVGGraphicsElement IDL interface

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 5943a549fb6d2d9ddf17e05895a3f9c2fa5b345c..64e99177bd2a3471bae540a42f11cf8c4a8ee9f1 100644
--- a/Source/core/svg/SVGEllipseElement.h
+++ b/Source/core/svg/SVGEllipseElement.h
@@ -24,13 +24,11 @@
 #include "core/svg/SVGAnimatedBoolean.h"
 #include "core/svg/SVGAnimatedLength.h"
 #include "core/svg/SVGExternalResourcesRequired.h"
-#include "core/svg/SVGStyledTransformableElement.h"
-#include "core/svg/SVGTests.h"
+#include "core/svg/SVGGraphicsElement.h"
 
 namespace WebCore {
 
-class SVGEllipseElement FINAL : public SVGStyledTransformableElement,
-                                public SVGTests,
+class SVGEllipseElement FINAL : public SVGGraphicsElement,
                                 public SVGExternalResourcesRequired {
 public:
     static PassRefPtr<SVGEllipseElement> create(const QualifiedName&, Document*);