Generate toFooElement() functions from tagname data

Source/core/svg/SVGHKernElement.h

Index: Source/core/svg/SVGHKernElement.h
diff --git a/Source/core/svg/SVGHKernElement.h b/Source/core/svg/SVGHKernElement.h
index 74b158776a322cd5bc0fd2d964fe62c19c668baf..c142d95579fb411efebaf9c28ecc6a7c2769d647 100644
--- a/Source/core/svg/SVGHKernElement.h
+++ b/Source/core/svg/SVGHKernElement.h
@@ -23,7 +23,6 @@
 #define SVGHKernElement_h
 
 #if ENABLE(SVG_FONTS)
-#include "SVGNames.h"
 #include "core/svg/SVGFontElement.h"
 
 namespace WebCore {
@@ -43,12 +42,6 @@ private:
     virtual bool rendererIsNeeded(const NodeRenderingContext&) { return false; }
 };
 
-inline SVGHKernElement* toSVGHKernElement(Node* node)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!node || node->hasTagName(SVGNames::hkernTag));
-    return static_cast<SVGHKernElement*>(node);
-}
-
 } // namespace WebCore
 
 #endif // ENABLE(SVG_FONTS)