diff -r 000000000000 -r 6474c204b198 dom/webidl/URL.webidl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/webidl/URL.webidl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,39 @@
+/* -*- 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 origins of this IDL file are
+ * http://url.spec.whatwg.org/#api
+ * http://dev.w3.org/2006/webapi/FileAPI/#creating-revoking
+ * http://dev.w3.org/2011/webrtc/editor/getusermedia.html#url
+ *
+ * Copyright © 2012 W3C® (MIT, ERCIM, Keio), All Rights Reserved. W3C
+ * liability, trademark and document use rules apply.
+ */
+
+// [Constructor(DOMString url, optional (URL or DOMString) base = "about:blank")]
+[Constructor(DOMString url, URL base),
+ Constructor(DOMString url, optional DOMString base = "about:blank")]
+interface URL {
+};
+URL implements URLUtils;
+
+partial interface URL {
+  [Throws]
+  static DOMString? createObjectURL(Blob blob, optional objectURLOptions options);
+  [Throws]
+  static DOMString? createObjectURL(MediaStream stream, optional objectURLOptions options);
+  static void revokeObjectURL(DOMString url);
+};
+
+dictionary objectURLOptions
+{
+/* boolean autoRevoke = true; */ /* not supported yet */
+};
+
+// https://dvcs.w3.org/hg/html-media/raw-file/default/media-source/media-source.html
+partial interface URL {
+  [Throws]
+  static DOMString? createObjectURL(MediaSource source, optional objectURLOptions options);
+};