Introduce SVGGraphicsElement IDL interface

Source/core/svg/SVGAElement.h

Index: Source/core/svg/SVGAElement.h
diff --git a/Source/core/svg/SVGAElement.h b/Source/core/svg/SVGAElement.h
index 36ced8fee98187798e1870e2b6fba9d36e6350c7..6e6353be3f00dc96b358616baf0900ecea20487c 100644
--- a/Source/core/svg/SVGAElement.h
+++ b/Source/core/svg/SVGAElement.h
@@ -24,15 +24,13 @@
 
 #include "core/svg/SVGAnimatedBoolean.h"
 #include "core/svg/SVGExternalResourcesRequired.h"
-#include "core/svg/SVGStyledTransformableElement.h"
-#include "core/svg/SVGTests.h"
+#include "core/svg/SVGGraphicsElement.h"
 #include "core/svg/SVGURIReference.h"
 
 namespace WebCore {
 
-class SVGAElement FINAL : public SVGStyledTransformableElement,
+class SVGAElement FINAL : public SVGGraphicsElement,
                           public SVGURIReference,
-                          public SVGTests,
                           public SVGExternalResourcesRequired {
 public:
     static PassRefPtr<SVGAElement> create(const QualifiedName&, Document*);