Use stricter typing for HTMLCollection named getter

Source/bindings/v8/custom/V8HTMLOptionsCollectionCustom.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 29 matching lines @@
 #include "core/dom/NamedNodesCollection.h"
 #include "core/html/HTMLOptionElement.h"
 #include "core/html/HTMLOptionsCollection.h"
 #include "core/html/HTMLSelectElement.h"
 
 namespace WebCore {
 
 template<typename CallbackInfo>
 static void getNamedItems(HTMLOptionsCollection* collection, const AtomicString& name, const CallbackInfo& info)
 {
-    Vector<RefPtr<Node> > namedItems;
+    Vector<RefPtr<Element> > namedItems;
     collection->namedItems(name, namedItems);
 
     if (!namedItems.size()) {
         v8SetReturnValueNull(info);
         return;
     }
 
     if (namedItems.size() == 1) {
         v8SetReturnValueFast(info, namedItems.at(0).release(), collection);
         return;
@@ skipping 47 matching lines @@
             newLength = static_cast<unsigned>(v);
     }
 
     if (exceptionState.throwIfNeeded())
         return;
 
     imp->setLength(newLength, exceptionState);
 }
 
 } // namespace WebCore