Implement Canvas pixel manipulation

components/script/dom/webidls/ImageData.webidl

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+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * The origin of this IDL file is
+ * http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#imagedata
+ *
+ * © Copyright 2004-2011 Apple Computer, Inc., Mozilla Foundation, and Opera Software ASA.
+ * You are granted a license to use, reproduce and create derivative works of this document.
+ */
+
+//[Constructor(unsigned long sw, unsigned long sh),
+//Constructor(Uint8ClampedArray data, unsigned long sw, optional unsigned long sh),
+//Exposed=(Window,Worker)]
+interface ImageData {
+	//[Constant]
+	readonly attribute unsigned long width;
+	//[Constant]
+	readonly attribute unsigned long height;
+	//[Constant, StoreInSlot]
+	readonly attribute Uint8ClampedArray data;
+};