Add support for [NoInterfaceObject] extended attribute to bindings generator

Source/modules/mediastream/MediaStreamTrack.idl

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
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 [
+    NoInterfaceObject,
     Conditional=MEDIA_STREAM,
     EventTarget,
     ActiveDOMObject
 ] interface MediaStreamTrack {
     readonly attribute DOMString kind;
     readonly attribute DOMString id;
     readonly attribute DOMString label;
              attribute boolean enabled;
 
     readonly attribute DOMString readyState;
 
     attribute EventListener onmute;
     attribute EventListener onunmute;
     attribute EventListener onended;
 
     // EventTarget interface
     void addEventListener(DOMString type,
                           EventListener listener,
                           optional boolean useCapture);
     void removeEventListener(DOMString type,
                              EventListener listener,
                              optional boolean useCapture);
     [RaisesException] boolean dispatchEvent(Event event);
 };