Use Traversal<HTMLElement> API in HTMLTableRowsCollection

Source/core/html/HTMLElement.h

Index: Source/core/html/HTMLElement.h
diff --git a/Source/core/html/HTMLElement.h b/Source/core/html/HTMLElement.h
index 09ff972e265e1d83ee4ea8197d21a1c8b22cf893..e28af443e3efd13117b0d6739e0c217b55f16fc6 100644
--- a/Source/core/html/HTMLElement.h
+++ b/Source/core/html/HTMLElement.h
@@ -128,8 +128,9 @@ private:
 
 DEFINE_ELEMENT_TYPE_CASTS(HTMLElement, isHTMLElement());
 
+template <> inline bool isElementOfType<const HTMLElement>(const Node& node) { return node.isHTMLElement(); }

[Inactive, 2014/03/20 22:15:24]

Without this template specialization, isElementOfType<const HTMLElement>(node)
would do:
node.isElementNode() && toElement(node).isHTMLElement()

Since isHTMLElement() is a method on Node and checks a flag on Node, the call to
isElementNode() is redundant and can be skipped for efficiency.

 template <typename T> bool isElementOfType(const HTMLElement&);
-template <> inline bool isElementOfType<HTMLElement>(const HTMLElement&) { return true; }
+template <> inline bool isElementOfType<const HTMLElement>(const HTMLElement&) { return true; }
 
 inline HTMLElement::HTMLElement(const QualifiedName& tagName, Document& document, ConstructionType type = CreateHTMLElement)
     : Element(tagName, &document, type)