[SVG2] Merge SVGStyledElement into SVGElement

Source/core/svg/SVGElementInstance.h

Index: Source/core/svg/SVGElementInstance.h
diff --git a/Source/core/svg/SVGElementInstance.h b/Source/core/svg/SVGElementInstance.h
index 8e0e86eb366ff78726ed7ea72b133f8e3117fdef..88e39a3ef57ba99c486579f2a6c352f2ac17ff7b 100644
--- a/Source/core/svg/SVGElementInstance.h
+++ b/Source/core/svg/SVGElementInstance.h
@@ -35,7 +35,6 @@ void addChildNodesToDeletionQueue(GenericNode*& head, GenericNode*& tail, Generi
 class Document;
 class SVGElement;
 class SVGElementInstanceList;
-class SVGStyledElement;
 class SVGUseElement;
 
 // SVGElementInstance mimics Node, but without providing all its functionality
@@ -91,7 +90,7 @@ public:
         ~InstanceUpdateBlocker();
 
     private:
-        SVGStyledElement* m_targetElement;
+        SVGElement* m_targetElement;
     };
 
     static void invalidateAllInstancesOfElement(SVGElement*);