Update HTMLFormControlsCollection's named getter to behave according to spec

Source/core/html/HTMLFormControlsCollection.idl

Index: Source/core/html/HTMLFormControlsCollection.idl
diff --git a/Source/core/html/HTMLFormControlsCollection.idl b/Source/core/html/HTMLFormControlsCollection.idl
index aeb9a1ec229328c71928a9775eefea16a3862739..5ed779f2dfa1be74b19917aed25508faacab8429 100644
--- a/Source/core/html/HTMLFormControlsCollection.idl
+++ b/Source/core/html/HTMLFormControlsCollection.idl
@@ -1,6 +1,7 @@
 /*
  * Copyright (C) 2006, 2007, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
+ * Copyright (C) 2014 Samsung Electronics. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ -23,6 +24,5 @@
     SetWrapperReferenceFrom=ownerNode,
 ] interface HTMLFormControlsCollection : HTMLCollection {
     [ImplementedAs=item] getter Node (unsigned long index);
-    [Custom] Element namedItem([Default=Undefined] optional DOMString name);
-    [ImplementedAs=namedGetter, NotEnumerable] getter (RadioNodeList or Element) (DOMString name);
+    [ImplementedAs=namedGetter] getter (RadioNodeList or Element) namedItem(DOMString name); // shadows inherited namedItem()
 };