Use stricter typing for HTMLCollection named getter

Source/core/html/HTMLOptionsCollection.cpp

Index: Source/core/html/HTMLOptionsCollection.cpp
diff --git a/Source/core/html/HTMLOptionsCollection.cpp b/Source/core/html/HTMLOptionsCollection.cpp
index 90fa9d38a57c2e9452f07cc5ef13d7585a2f4fa2..6619895cf63bb565f219af45daeadcd678fe697a 100644
--- a/Source/core/html/HTMLOptionsCollection.cpp
+++ b/Source/core/html/HTMLOptionsCollection.cpp
@@ -96,9 +96,9 @@ void HTMLOptionsCollection::setLength(unsigned length, ExceptionState& exception
     toHTMLSelectElement(ownerNode())->setLength(length, exceptionState);
 }
 
-void HTMLOptionsCollection::anonymousNamedGetter(const AtomicString& name, bool& returnValue0Enabled, RefPtr<NodeList>& returnValue0, bool& returnValue1Enabled, RefPtr<Node>& returnValue1)
+void HTMLOptionsCollection::anonymousNamedGetter(const AtomicString& name, bool& returnValue0Enabled, RefPtr<NodeList>& returnValue0, bool& returnValue1Enabled, RefPtr<Element>& returnValue1)
 {
-    Vector<RefPtr<Node> > namedItems;
+    Vector<RefPtr<Element> > namedItems;
     this->namedItems(name, namedItems);
 
     if (!namedItems.size())