Add support for [NoInterfaceObject] extended attribute to bindings generator

Source/core/html/HTMLMediaElement.idl

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 [
     Conditional=VIDEO,
+    EnabledAtRuntime,
     ActiveDOMObject
 ] interface HTMLMediaElement : HTMLElement {
 
 // error state
 readonly attribute MediaError error;
 
 // network state
 [Reflect, URL] attribute DOMString src;
 [URL] readonly attribute DOMString currentSrc;
 
@@ skipping 68 matching lines @@
 #if defined(ENABLE_ENCRYPTED_MEDIA_V2) && ENABLE_ENCRYPTED_MEDIA_V2
     [EnabledAtRuntime=encryptedMedia] attribute MediaKeys mediaKeys;
 #endif
 
 [EnabledAtRuntime=webkitVideoTrack, RaisesException] TextTrack addTextTrack(DOMString kind, optional DOMString label, optional DOMString language);
 [EnabledAtRuntime=webkitVideoTrack] readonly attribute TextTrackList textTracks;
 
 [Reflect, TreatNullAs=NullString] attribute DOMString mediaGroup;
 [CustomSetter] attribute MediaController controller;
 };