Expose Web Animations API to Web Workers

Source/core/workers/WorkerGlobalScope.idl

 /*
  * Copyright (C) 2008 Apple 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 19 matching lines @@
     WillBeGarbageCollected
 ] interface WorkerGlobalScope : EventTarget {
 
     // WorkerGlobalScope
     [Replaceable] readonly attribute WorkerGlobalScope self;
     [Replaceable] readonly attribute WorkerLocation location;
     void close();
     attribute EventHandler onerror;
     [Replaceable] readonly attribute WorkerConsole console;
 
-
+    void requestAnimationFrame(RequestAnimationFrameCallback insert);
     // WorkerUtils
     [RaisesException] void importScripts(DOMString... urls);
     [Replaceable] readonly attribute WorkerNavigator navigator;
 
     // Additional constructors
     [MeasureAs=PrefixedWorkerURL] attribute URLConstructor webkitURL; // FIXME: deprecate this.
 };
 
 WorkerGlobalScope implements WindowBase64;
 WorkerGlobalScope implements WindowTimers;