Generate toFooElement() functions from tagname data

Source/core/svg/SVGImageElement.h

Index: Source/core/svg/SVGImageElement.h
diff --git a/Source/core/svg/SVGImageElement.h b/Source/core/svg/SVGImageElement.h
index fc4e1573635f17d785f06369a7bccf1a2436e74b..5c9af5bed02da5e75cbc249888339ed73c78b754 100644
--- a/Source/core/svg/SVGImageElement.h
+++ b/Source/core/svg/SVGImageElement.h
@@ -21,7 +21,6 @@
 #ifndef SVGImageElement_h
 #define SVGImageElement_h
 
-#include "SVGNames.h"
 #include "core/svg/SVGAnimatedBoolean.h"
 #include "core/svg/SVGAnimatedLength.h"
 #include "core/svg/SVGAnimatedPreserveAspectRatio.h"
@@ -78,12 +77,6 @@ private:
     SVGImageLoader m_imageLoader;
 };
 
-inline SVGImageElement* toSVGImageElement(Node* node)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!node || node->hasTagName(SVGNames::imageTag));
-    return static_cast<SVGImageElement*>(node);
-}
-
 } // namespace WebCore
 
 #endif