Add support for [NoInterfaceObject] extended attribute to bindings generator

Source/modules/mediastream/RTCDataChannel.idl

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
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  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
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  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 [
+    NoInterfaceObject,
     EventTarget
 ] interface RTCDataChannel {
     readonly attribute DOMString label;
     readonly attribute boolean reliable;
     readonly attribute DOMString readyState;
     readonly attribute unsigned long bufferedAmount;
 
     [SetterRaisesException] attribute DOMString binaryType;
 
     [RaisesException] void send(ArrayBuffer data);
@@ skipping 10 matching lines @@
 
     // 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);
 };