Regression(r178540): Traversal<*Element>::lastWithin() is incorrect

Source/core/dom/ElementTraversal.h

Index: Source/core/dom/ElementTraversal.h
diff --git a/Source/core/dom/ElementTraversal.h b/Source/core/dom/ElementTraversal.h
index e0165aec982dea919c66ad86739af7b5791100ef..9bca3c28ee8433da886bc0c4759e5230a720fa34 100644
--- a/Source/core/dom/ElementTraversal.h
+++ b/Source/core/dom/ElementTraversal.h
@@ -220,9 +220,9 @@ template <class ElementType>
 template <class NodeType>
 inline ElementType* Traversal<ElementType>::lastWithinTemplate(NodeType& current)
 {
-    Node* node = current.lastChild();
+    Node* node = NodeTraversal::lastWithin(current);
     while (node && !isElementOfType<const ElementType>(*node))
-        node = NodeTraversal::previous(node, &current);
+        node = NodeTraversal::previous(*node, &current);
     return toElement<ElementType>(node);
 }