Replace [CallWith=ExecutionContext] with [CallWith=ScriptState]

third_party/WebKit/Source/modules/mediastream/MediaStream.idl

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 20 matching lines @@
     Constructor(sequence<MediaStreamTrack> tracks),
     ConstructorCallWith=ExecutionContext,
 ] interface MediaStream : EventTarget {
     readonly attribute DOMString id;
     sequence<MediaStreamTrack> getAudioTracks();
     sequence<MediaStreamTrack> getVideoTracks();
     sequence<MediaStreamTrack> getTracks();
     MediaStreamTrack? getTrackById(DOMString trackId);
     [RaisesException] void addTrack(MediaStreamTrack track);
     [RaisesException] void removeTrack(MediaStreamTrack track);
-    [CallWith=ExecutionContext] MediaStream clone();
+    [CallWith=ScriptState] MediaStream clone();
     [Measure] readonly attribute boolean active;
     attribute EventHandler onaddtrack;
     attribute EventHandler onremovetrack;
 
     // TODO(guidou): Remove the active and inactive events on MediaStream.
     // https://crbug.com/649328
     attribute EventHandler onactive;
     attribute EventHandler oninactive;
 };