diff -r 000000000000 -r 6474c204b198 content/media/webspeech/synth/nsIDOMSpeechSynthesisEvent.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/content/media/webspeech/synth/nsIDOMSpeechSynthesisEvent.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,27 @@
+/* -*- 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://dvcs.w3.org/hg/speech-api/raw-file/tip/speechapi.html
+ *
+ * Copyright © 2012 W3C® (MIT, ERCIM, Keio), All Rights Reserved. W3C
+ * liability, trademark and document use rules apply.
+ */
+
+#include "nsIDOMEvent.idl"
+
+[scriptable, builtinclass, uuid(b5240841-dc69-43dd-bcf1-9306b8ddaa09)]
+interface nsIDOMSpeechSynthesisEvent : nsIDOMEvent {
+  [noscript] void initSpeechSynthesisEvent(in DOMString aEventTypeArg,
+                                           in boolean aCanBubbleArg,
+                                           in boolean aCancelableArg,
+                                           in unsigned long aCharIndex,
+                                           in float aElapsedTime,
+                                           in DOMString aName);
+
+  readonly attribute unsigned long charIndex;
+  readonly attribute float elapsedTime;
+  readonly attribute DOMString name;
+};