Refactoring: toHTMLElement(const Node*) added but never used. Using it.

Source/core/html/HTMLElement.cpp

Index: Source/core/html/HTMLElement.cpp
diff --git a/Source/core/html/HTMLElement.cpp b/Source/core/html/HTMLElement.cpp
index cfd193a8122249fcdc605feb0e59f4112f4863e5..8b3490979356235153c58f3a75c4326a1723384a 100644
--- a/Source/core/html/HTMLElement.cpp
+++ b/Source/core/html/HTMLElement.cpp
@@ -742,7 +742,7 @@ bool HTMLElement::translate() const
 {
     for (const Node* n = this; n; n = n->parentNode()) {
         if (n->isHTMLElement()) {
-            TranslateAttributeMode mode = static_cast<const HTMLElement*>(n)->translateAttributeMode();
+            TranslateAttributeMode mode = toHTMLElement(n)->translateAttributeMode();
             if (mode != TranslateAttributeInherit) {
                 ASSERT(mode == TranslateAttributeYes || mode == TranslateAttributeNo);
                 return mode == TranslateAttributeYes;