diff -r 000000000000 -r 6474c204b198 dom/fmradio/ipc/FMRadioChild.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/fmradio/ipc/FMRadioChild.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,95 @@
+/* -*- 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_fmradiochild_h__
+#define mozilla_dom_fmradiochild_h__
+
+#include "FMRadioCommon.h"
+#include "FMRadioService.h"
+#include "mozilla/dom/PFMRadioChild.h"
+#include "mozilla/StaticPtr.h"
+
+BEGIN_FMRADIO_NAMESPACE
+
+/**
+ * FMRadioChild plays two roles:
+ *   - Kind of proxy of FMRadioService
+ *     Redirect all the requests  coming from web content to FMRadioService
+ *     in parent through IPC channel.
+ *   - Child Actor of PFMRadio
+ *     IPC channel to transfer the requests.
+ */
+class FMRadioChild MOZ_FINAL : public IFMRadioService
+                             , public PFMRadioChild
+{
+public:
+  static FMRadioChild* Singleton();
+  ~FMRadioChild();
+
+  void SendRequest(FMRadioReplyRunnable* aReplyRunnable,
+                   FMRadioRequestArgs aArgs);
+
+  /* IFMRadioService */
+  virtual bool IsEnabled() const MOZ_OVERRIDE;
+  virtual double GetFrequency() const MOZ_OVERRIDE;
+  virtual double GetFrequencyUpperBound() const MOZ_OVERRIDE;
+  virtual double GetFrequencyLowerBound() const MOZ_OVERRIDE;
+  virtual double GetChannelWidth() const MOZ_OVERRIDE;
+
+  virtual void Enable(double aFrequency,
+                      FMRadioReplyRunnable* aReplyRunnable) MOZ_OVERRIDE;
+  virtual void Disable(FMRadioReplyRunnable* aReplyRunnable) MOZ_OVERRIDE;
+  virtual void SetFrequency(double frequency,
+                            FMRadioReplyRunnable* aReplyRunnable) MOZ_OVERRIDE;
+  virtual void Seek(mozilla::hal::FMRadioSeekDirection aDirection,
+                    FMRadioReplyRunnable* aReplyRunnable) MOZ_OVERRIDE;
+  virtual void CancelSeek(FMRadioReplyRunnable* aReplyRunnable) MOZ_OVERRIDE;
+
+  virtual void AddObserver(FMRadioEventObserver* aObserver) MOZ_OVERRIDE;
+  virtual void RemoveObserver(FMRadioEventObserver* aObserver) MOZ_OVERRIDE;
+
+  virtual void EnableAudio(bool aAudioEnabled) MOZ_OVERRIDE;
+
+  /* PFMRadioChild */
+  virtual bool
+  Recv__delete__() MOZ_OVERRIDE;
+
+  virtual bool
+  RecvNotifyFrequencyChanged(const double& aFrequency) MOZ_OVERRIDE;
+
+  virtual bool
+  RecvNotifyEnabledChanged(const bool& aEnabled,
+                           const double& aFrequency) MOZ_OVERRIDE;
+
+  virtual PFMRadioRequestChild*
+  AllocPFMRadioRequestChild(const FMRadioRequestArgs& aArgs) MOZ_OVERRIDE;
+
+  virtual bool
+  DeallocPFMRadioRequestChild(PFMRadioRequestChild* aActor) MOZ_OVERRIDE;
+
+private:
+  FMRadioChild();
+
+  void Init();
+
+  inline void NotifyFMRadioEvent(FMRadioEventType aType);
+
+  bool mEnabled;
+  double mFrequency;
+  double mUpperBound;
+  double mLowerBound;
+  double mChannelWidth;
+
+  FMRadioEventObserverList mObserverList;
+
+private:
+  static StaticAutoPtr<FMRadioChild> sFMRadioChild;
+};
+
+END_FMRADIO_NAMESPACE
+
+#endif // mozilla_dom_fmradiochild_h__
+