Make RadioNodeList be NodeList

tools/dom/templates/html/impl/impl_RadioNodeList.darttemplate

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of $LIBRARYNAME;
 
+$if DART2JS
+// Omit RadioNodeList for dart2js.  The Dart Form and FieldSet APIs don't
+// currently expose an API the returns RadioNodeList.  The only use of a
+// RadioNodeList is to get the selected value and it will be cleaner to
+// introduce a different API for that purpose.
+$else
 $(ANNOTATIONS)class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
-  factory $CLASSNAME(Map dictionary) {
-    return JS('RtcIceCandidate', 'new RTCIceCandidate(#)',
-        convertDartToNative_SerializedScriptValue(dictionary));
-  }
 $!MEMBERS
 }
+$endif