diff -r 000000000000 -r 6474c204b198 dom/fmradio/ipc/FMRadioChild.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/fmradio/ipc/FMRadioChild.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,189 @@
+/* -*- 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/. */
+
+#include "FMRadioChild.h"
+#include "mozilla/dom/ContentChild.h"
+#include "mozilla/dom/FMRadioRequestChild.h"
+
+using namespace mozilla::hal;
+
+BEGIN_FMRADIO_NAMESPACE
+
+StaticAutoPtr<FMRadioChild> FMRadioChild::sFMRadioChild;
+
+FMRadioChild::FMRadioChild()
+  : mEnabled(false)
+  , mFrequency(0)
+  , mObserverList(FMRadioEventObserverList())
+{
+  MOZ_COUNT_CTOR(FMRadioChild);
+
+  ContentChild::GetSingleton()->SendPFMRadioConstructor(this);
+
+  StatusInfo statusInfo;
+  SendGetStatusInfo(&statusInfo);
+
+  mEnabled = statusInfo.enabled();
+  mFrequency = statusInfo.frequency();
+  mUpperBound = statusInfo.upperBound();
+  mLowerBound= statusInfo.lowerBound();
+  mChannelWidth = statusInfo.channelWidth();
+}
+
+FMRadioChild::~FMRadioChild()
+{
+  MOZ_COUNT_DTOR(FMRadioChild);
+}
+
+bool
+FMRadioChild::IsEnabled() const
+{
+  return mEnabled;
+}
+
+double
+FMRadioChild::GetFrequency() const
+{
+  return mFrequency;
+}
+
+
+double
+FMRadioChild::GetFrequencyUpperBound() const
+{
+  return mUpperBound;
+}
+
+double
+FMRadioChild::GetFrequencyLowerBound() const
+{
+  return mLowerBound;
+}
+
+double
+FMRadioChild::GetChannelWidth() const
+{
+  return mChannelWidth;
+}
+
+void
+FMRadioChild::Enable(double aFrequency, FMRadioReplyRunnable* aReplyRunnable)
+{
+  SendRequest(aReplyRunnable, EnableRequestArgs(aFrequency));
+}
+
+void
+FMRadioChild::Disable(FMRadioReplyRunnable* aReplyRunnable)
+{
+  SendRequest(aReplyRunnable, DisableRequestArgs());
+}
+
+void
+FMRadioChild::SetFrequency(double aFrequency,
+                           FMRadioReplyRunnable* aReplyRunnable)
+{
+  SendRequest(aReplyRunnable, SetFrequencyRequestArgs(aFrequency));
+}
+
+void
+FMRadioChild::Seek(FMRadioSeekDirection aDirection,
+                   FMRadioReplyRunnable* aReplyRunnable)
+{
+  SendRequest(aReplyRunnable, SeekRequestArgs(aDirection));
+}
+
+void
+FMRadioChild::CancelSeek(FMRadioReplyRunnable* aReplyRunnable)
+{
+  SendRequest(aReplyRunnable, CancelSeekRequestArgs());
+}
+
+inline void
+FMRadioChild::NotifyFMRadioEvent(FMRadioEventType aType)
+{
+  mObserverList.Broadcast(aType);
+}
+
+void
+FMRadioChild::AddObserver(FMRadioEventObserver* aObserver)
+{
+  mObserverList.AddObserver(aObserver);
+}
+
+void
+FMRadioChild::RemoveObserver(FMRadioEventObserver* aObserver)
+{
+  mObserverList.RemoveObserver(aObserver);
+}
+
+void
+FMRadioChild::SendRequest(FMRadioReplyRunnable* aReplyRunnable,
+                          FMRadioRequestArgs aArgs)
+{
+  PFMRadioRequestChild* childRequest = new FMRadioRequestChild(aReplyRunnable);
+  SendPFMRadioRequestConstructor(childRequest, aArgs);
+}
+
+bool
+FMRadioChild::RecvNotifyFrequencyChanged(const double& aFrequency)
+{
+  mFrequency = aFrequency;
+  NotifyFMRadioEvent(FrequencyChanged);
+  return true;
+}
+
+bool
+FMRadioChild::RecvNotifyEnabledChanged(const bool& aEnabled,
+                                       const double& aFrequency)
+{
+  mEnabled = aEnabled;
+  mFrequency = aFrequency;
+  NotifyFMRadioEvent(EnabledChanged);
+  return true;
+}
+
+bool
+FMRadioChild::Recv__delete__()
+{
+  return true;
+}
+
+PFMRadioRequestChild*
+FMRadioChild::AllocPFMRadioRequestChild(const FMRadioRequestArgs& aArgs)
+{
+  MOZ_CRASH();
+  return nullptr;
+}
+
+bool
+FMRadioChild::DeallocPFMRadioRequestChild(PFMRadioRequestChild* aActor)
+{
+  delete aActor;
+  return true;
+}
+
+void
+FMRadioChild::EnableAudio(bool aAudioEnabled)
+{
+  SendEnableAudio(aAudioEnabled);
+}
+
+// static
+FMRadioChild*
+FMRadioChild::Singleton()
+{
+  MOZ_ASSERT(XRE_GetProcessType() != GeckoProcessType_Default);
+  MOZ_ASSERT(NS_IsMainThread());
+
+  if (!sFMRadioChild) {
+    sFMRadioChild = new FMRadioChild();
+  }
+
+  return sFMRadioChild;
+}
+
+END_FMRADIO_NAMESPACE
+