Generate toFooElement() functions from tagname data

Source/core/svg/SVGFEImageElement.h

Index: Source/core/svg/SVGFEImageElement.h
diff --git a/Source/core/svg/SVGFEImageElement.h b/Source/core/svg/SVGFEImageElement.h
index c769e5572136dcc9b5a7c463f5e4d347c18cbf0f..c7b9270fc694f9fd0bd66558168c39c68f50f65a 100644
--- a/Source/core/svg/SVGFEImageElement.h
+++ b/Source/core/svg/SVGFEImageElement.h
@@ -21,7 +21,6 @@
 #ifndef SVGFEImageElement_h
 #define SVGFEImageElement_h
 
-#include "SVGNames.h"
 #include "core/fetch/ImageResource.h"
 #include "core/fetch/ResourcePtr.h"
 #include "core/platform/graphics/ImageBuffer.h"
@@ -72,12 +71,6 @@ private:
     ResourcePtr<ImageResource> m_cachedImage;
 };
 
-inline SVGFEImageElement* toSVGFEImageElement(Node* node)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!node || node->hasTagName(SVGNames::feImageTag));
-    return static_cast<SVGFEImageElement*>(node);
-}
-
 } // namespace WebCore
 
 #endif