Make element.style["color"] work in Sky

sky/engine/core/css/CSSStyleDeclaration.idl

-/*
- * Copyright (C) 2006, 2007, 2009 Apple Inc. All rights reserved.
- * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
- *
- * 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.
- */
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
 
-// Introduced in DOM Level 2:
-[
-    DependentLifetime,
-] interface CSSStyleDeclaration {
-    [RaisesException=Setter] attribute DOMString?       cssText;
+interface CSSStyleDeclaration {
+  [ImplementedAs=getPropertyValue] getter DOMString (DOMString name);
+  [RaisesException, ImplementedAs=setProperty] setter void (DOMString name, DOMString? value);
 
-    DOMString?          getPropertyValue([Default=Undefined] optional DOMString propertyName);
-    [RaisesException] DOMString?          removeProperty([Default=Undefined] optional DOMString propertyName);
-    [RaisesException] void setProperty(DOMString propertyName, DOMString? value);
-
-    readonly attribute unsigned long    length;
-    getter DOMString          item([Default=Undefined] optional unsigned long index);
-    [Custom] setter void (DOMString propertyName, DOMString? propertyValue);
+  [RaisesException] void removeProperty(DOMString name);
 };