Worker: Move close() from WorkerGlobalScope to derived interfaces

third_party/WebKit/Source/core/workers/DedicatedWorkerGlobalScope.idl

 /*
  * Copyright (C) 2009, 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 // https://html.spec.whatwg.org/#dedicated-workers-and-the-dedicatedworkerglobalscope-interface
 
 [
     Global=(Worker,DedicatedWorker),
     Exposed=DedicatedWorker,
 ] interface DedicatedWorkerGlobalScope : WorkerGlobalScope {
     [PostMessage, RaisesException] void postMessage(any message, optional sequence<Transferable> transfer);
+
+    void close();
+
     attribute EventHandler onmessage;
 };