Introduce WindowTimers IDL interface

Source/core/page/Window.idl

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * 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
@@ skipping 143 matching lines @@
     //  90 is when rotated counter clockwise.
     [Conditional=ORIENTATION_EVENTS] readonly attribute long orientation;
 
     [Replaceable] readonly attribute Console console;
 
     // cross-document messaging
     [DoNotCheckSecurity, Custom, RaisesException] void postMessage(SerializedScriptValue message, DOMString targetOrigin, optional Array messagePorts);
 
     [Replaceable] readonly attribute Performance performance;
 
-    // Timers
-    [Custom] long setTimeout(any handler, [Default=Undefined] optional long timeout);
-    void clearTimeout([Default=Undefined] optional long handle);
-    [Custom] long setInterval(any handler, [Default=Undefined] optional long timeout);
-    void clearInterval([Default=Undefined] optional long handle);
-
     [MeasureAs=UnprefixedRequestAnimationFrame] long requestAnimationFrame(RequestAnimationFrameCallback callback);
     void cancelAnimationFrame(long id);
     [MeasureAs=PrefixedRequestAnimationFrame] long webkitRequestAnimationFrame(RequestAnimationFrameCallback callback);
     [ImplementedAs=cancelAnimationFrame] void webkitCancelAnimationFrame(long id);
     [ImplementedAs=cancelAnimationFrame] void webkitCancelRequestAnimationFrame(long id); // This is a deprecated alias for webkitCancelAnimationFrame(). Remove this when removing vendor prefix.
 
     // Base64
     [RaisesException] DOMString atob([TreatNullAs=NullString,Default=Undefined] optional DOMString string);
     [RaisesException] DOMString btoa([TreatNullAs=NullString,Default=Undefined] optional DOMString string);
 
@@ skipping 127 matching lines @@
     attribute ShadowRootConstructor WebKitShadowRoot;
     [Conditional=WEB_AUDIO] attribute PannerNodeConstructor webkitAudioPannerNode;
 
     // window.toString() requires special handling in V8
     [DoNotCheckSignature, DoNotCheckSecurity, Custom, NotEnumerable] DOMString toString();
 
     [ImplementedAs=anonymousIndexedGetter, NotEnumerable] getter Window(unsigned long index);
     [Custom, NotEnumerable] getter Window (DOMString name);
 };
 
+Window implements WindowTimers;
+