diff -r 000000000000 -r 6474c204b198 dom/webidl/MozSpeakerManager.webidl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/webidl/MozSpeakerManager.webidl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,18 @@
+/* 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/.
+ */
+
+/*
+ * Allow application can control acoustic sound output through speaker.
+ * Reference https://wiki.mozilla.org/WebAPI/SpeakerManager
+ */
+[Constructor()]
+interface MozSpeakerManager : EventTarget {
+  /* query the speaker status */
+  readonly attribute boolean speakerforced;
+  /* force device device's acoustic sound output through speaker */
+  attribute boolean forcespeaker;
+  /* this event will be fired when device's speaker forced status change */
+  attribute EventHandler onspeakerforcedchange;
+};