diff -r 000000000000 -r 6474c204b198 dom/speakermanager/SpeakerManagerServiceChild.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/speakermanager/SpeakerManagerServiceChild.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,37 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef mozilla_dom_SpeakerManagerServicechild_h__
+#define mozilla_dom_SpeakerManagerServicechild_h__
+
+#include "nsAutoPtr.h"
+#include "nsISupports.h"
+#include "SpeakerManagerService.h"
+
+namespace mozilla {
+namespace dom {
+/* This class is used to do the IPC to enable/disable speaker status
+   Also handle the application speaker competition problem
+*/
+class SpeakerManagerServiceChild : public SpeakerManagerService
+{
+public:
+  static SpeakerManagerService* GetSpeakerManagerService();
+  static void Shutdown();
+  virtual void ForceSpeaker(bool aEnable, bool aVisible) MOZ_OVERRIDE;
+  virtual bool GetSpeakerStatus() MOZ_OVERRIDE;
+  virtual void SetAudioChannelActive(bool aIsActive) MOZ_OVERRIDE;
+  virtual void Notify() MOZ_OVERRIDE;
+protected:
+  SpeakerManagerServiceChild();
+  virtual ~SpeakerManagerServiceChild();
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif
+