Remove Animations and Transitions.

sky/engine/core/dom/Document.idl

 /*
  * Copyright (C) 2006, 2007, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006, 2007 Samuel Weinig <sam@webkit.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 45 matching lines @@
                                            [Default=Undefined] optional long y);
 
     // Mozilla extensions
     Selection          getSelection();
 
     // HTML 5
     readonly attribute Element activeElement;
     boolean hasFocus();
 
     [RaisesException] void registerElement(DOMString name, any type);
-
-    // Page visibility API.
-    readonly attribute DOMString visibilityState;
-    readonly attribute boolean hidden;
 };