Morph the APIs for Node, ParentNode, and Element closer to the specs

sky/engine/core/dom/ChildNode.idl

-/*
- * Copyright (C) 2006, 2007, 2009 Apple Inc. All rights reserved.
- * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
- * Copyright (C) 2013 Samsung Electronics. All rights reserved.
- *
- *
- * 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,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public License
- * along with this library; see the file COPYING.LIB.  If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-// http://dom.spec.whatwg.org/#interface-childnode
-
-[
-    LegacyTreatAsPartialInterface,
-    NoInterfaceObject, // Always used on target of 'implements'
-] interface ChildNode {
-    readonly attribute Element previousElementSibling;
-    readonly attribute Element nextElementSibling;
-    [RaisesException, CustomElementCallbacks] void remove();
-};