Clean up toHTMLFooElement() using DEFINE_NODE_TYPE_CASTS_WITH_FUNCTION

Source/core/html/shadow/HTMLShadowElement.h

Index: Source/core/html/shadow/HTMLShadowElement.h
diff --git a/Source/core/html/shadow/HTMLShadowElement.h b/Source/core/html/shadow/HTMLShadowElement.h
index b9943bd3364e6dfd5719bfd1d49db613c0e63052..c528127c25cabf31007fdd5f4040bd6205d13738 100644
--- a/Source/core/html/shadow/HTMLShadowElement.h
+++ b/Source/core/html/shadow/HTMLShadowElement.h
@@ -55,17 +55,7 @@ inline bool isHTMLShadowElement(const Node* node)
     return node->hasTagName(HTMLNames::shadowTag);
 }
 
-inline HTMLShadowElement* toHTMLShadowElement(Node* node)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!node || isHTMLShadowElement(node));
-    return static_cast<HTMLShadowElement*>(node);
-}
-
-inline const HTMLShadowElement* toHTMLShadowElement(const Node* node)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!node || isHTMLShadowElement(node));
-    return static_cast<const HTMLShadowElement*>(node);
-}
+DEFINE_NODE_TYPE_CASTS(HTMLShadowElement, hasTagName(HTMLNames::shadowTag));
 
 inline bool isActiveShadowInsertionPoint(const Node* node)
 {