diff -r 000000000000 -r 6474c204b198 hal/sandbox/SandboxHal.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hal/sandbox/SandboxHal.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,937 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set sw=2 ts=8 et ft=cpp : */
+/* 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 "Hal.h"
+#include "mozilla/AppProcessChecker.h"
+#include "mozilla/dom/ContentChild.h"
+#include "mozilla/dom/ContentParent.h"
+#include "mozilla/hal_sandbox/PHalChild.h"
+#include "mozilla/hal_sandbox/PHalParent.h"
+#include "mozilla/dom/TabParent.h"
+#include "mozilla/dom/TabChild.h"
+#include "mozilla/dom/battery/Types.h"
+#include "mozilla/dom/network/Types.h"
+#include "mozilla/dom/ScreenOrientation.h"
+#include "mozilla/Observer.h"
+#include "mozilla/unused.h"
+#include "WindowIdentifier.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+using namespace mozilla::hal;
+
+namespace mozilla {
+namespace hal_sandbox {
+
+static bool sHalChildDestroyed = false;
+
+bool
+HalChildDestroyed()
+{
+  return sHalChildDestroyed;
+}
+
+static PHalChild* sHal;
+static PHalChild*
+Hal()
+{
+  if (!sHal) {
+    sHal = ContentChild::GetSingleton()->SendPHalConstructor();
+  }
+  return sHal;
+}
+
+void
+Vibrate(const nsTArray<uint32_t>& pattern, const WindowIdentifier &id)
+{
+  HAL_LOG(("Vibrate: Sending to parent process."));
+
+  AutoInfallibleTArray<uint32_t, 8> p(pattern);
+
+  WindowIdentifier newID(id);
+  newID.AppendProcessID();
+  Hal()->SendVibrate(p, newID.AsArray(), TabChild::GetFrom(newID.GetWindow()));
+}
+
+void
+CancelVibrate(const WindowIdentifier &id)
+{
+  HAL_LOG(("CancelVibrate: Sending to parent process."));
+
+  WindowIdentifier newID(id);
+  newID.AppendProcessID();
+  Hal()->SendCancelVibrate(newID.AsArray(), TabChild::GetFrom(newID.GetWindow()));
+}
+
+void
+EnableBatteryNotifications()
+{
+  Hal()->SendEnableBatteryNotifications();
+}
+
+void
+DisableBatteryNotifications()
+{
+  Hal()->SendDisableBatteryNotifications();
+}
+
+void
+GetCurrentBatteryInformation(BatteryInformation* aBatteryInfo)
+{
+  Hal()->SendGetCurrentBatteryInformation(aBatteryInfo);
+}
+
+void
+EnableNetworkNotifications()
+{
+  Hal()->SendEnableNetworkNotifications();
+}
+
+void
+DisableNetworkNotifications()
+{
+  Hal()->SendDisableNetworkNotifications();
+}
+
+void
+GetCurrentNetworkInformation(NetworkInformation* aNetworkInfo)
+{
+  Hal()->SendGetCurrentNetworkInformation(aNetworkInfo);
+}
+
+void
+EnableScreenConfigurationNotifications()
+{
+  Hal()->SendEnableScreenConfigurationNotifications();
+}
+
+void
+DisableScreenConfigurationNotifications()
+{
+  Hal()->SendDisableScreenConfigurationNotifications();
+}
+
+void
+GetCurrentScreenConfiguration(ScreenConfiguration* aScreenConfiguration)
+{
+  Hal()->SendGetCurrentScreenConfiguration(aScreenConfiguration);
+}
+
+bool
+LockScreenOrientation(const dom::ScreenOrientation& aOrientation)
+{
+  bool allowed;
+  Hal()->SendLockScreenOrientation(aOrientation, &allowed);
+  return allowed;
+}
+
+void
+UnlockScreenOrientation()
+{
+  Hal()->SendUnlockScreenOrientation();
+}
+
+bool
+GetScreenEnabled()
+{
+  bool enabled = false;
+  Hal()->SendGetScreenEnabled(&enabled);
+  return enabled;
+}
+
+void
+SetScreenEnabled(bool enabled)
+{
+  Hal()->SendSetScreenEnabled(enabled);
+}
+
+bool
+GetCpuSleepAllowed()
+{
+  bool allowed = true;
+  Hal()->SendGetCpuSleepAllowed(&allowed);
+  return allowed;
+}
+
+void
+SetCpuSleepAllowed(bool allowed)
+{
+  Hal()->SendSetCpuSleepAllowed(allowed);
+}
+
+double
+GetScreenBrightness()
+{
+  double brightness = 0;
+  Hal()->SendGetScreenBrightness(&brightness);
+  return brightness;
+}
+
+void
+SetScreenBrightness(double brightness)
+{
+  Hal()->SendSetScreenBrightness(brightness);
+}
+
+bool
+SetLight(hal::LightType light, const hal::LightConfiguration& aConfig)
+{
+  bool status;
+  Hal()->SendSetLight(light, aConfig, &status);
+  return status;
+}
+
+bool
+GetLight(hal::LightType light, hal::LightConfiguration* aConfig)
+{
+  bool status;
+  Hal()->SendGetLight(light, aConfig, &status);
+  return status;
+}
+
+void 
+AdjustSystemClock(int64_t aDeltaMilliseconds)
+{
+  Hal()->SendAdjustSystemClock(aDeltaMilliseconds);
+}
+
+void
+SetTimezone(const nsCString& aTimezoneSpec)
+{
+  Hal()->SendSetTimezone(nsCString(aTimezoneSpec));
+} 
+
+nsCString
+GetTimezone()
+{
+  nsCString timezone;
+  Hal()->SendGetTimezone(&timezone);
+  return timezone;
+}
+
+int32_t
+GetTimezoneOffset()
+{
+  int32_t timezoneOffset;
+  Hal()->SendGetTimezoneOffset(&timezoneOffset);
+  return timezoneOffset;
+}
+
+void
+EnableSystemClockChangeNotifications()
+{
+  Hal()->SendEnableSystemClockChangeNotifications();
+}
+
+void
+DisableSystemClockChangeNotifications()
+{
+  Hal()->SendDisableSystemClockChangeNotifications();
+}
+
+void
+EnableSystemTimezoneChangeNotifications()
+{
+  Hal()->SendEnableSystemTimezoneChangeNotifications();
+}
+
+void
+DisableSystemTimezoneChangeNotifications()
+{
+  Hal()->SendDisableSystemTimezoneChangeNotifications();
+}
+
+void
+Reboot()
+{
+  NS_RUNTIMEABORT("Reboot() can't be called from sandboxed contexts.");
+}
+
+void
+PowerOff()
+{
+  NS_RUNTIMEABORT("PowerOff() can't be called from sandboxed contexts.");
+}
+
+void
+StartForceQuitWatchdog(ShutdownMode aMode, int32_t aTimeoutSecs)
+{
+  NS_RUNTIMEABORT("StartForceQuitWatchdog() can't be called from sandboxed contexts.");
+}
+
+void
+EnableSensorNotifications(SensorType aSensor) {
+  Hal()->SendEnableSensorNotifications(aSensor);
+}
+
+void
+DisableSensorNotifications(SensorType aSensor) {
+  Hal()->SendDisableSensorNotifications(aSensor);
+}
+
+//TODO: bug 852944 - IPC implementations of these
+void StartMonitoringGamepadStatus()
+{}
+
+void StopMonitoringGamepadStatus()
+{}
+
+void
+EnableWakeLockNotifications()
+{
+  Hal()->SendEnableWakeLockNotifications();
+}
+
+void
+DisableWakeLockNotifications()
+{
+  Hal()->SendDisableWakeLockNotifications();
+}
+
+void
+ModifyWakeLock(const nsAString &aTopic,
+               WakeLockControl aLockAdjust,
+               WakeLockControl aHiddenAdjust,
+               uint64_t aProcessID)
+{
+  MOZ_ASSERT(aProcessID != CONTENT_PROCESS_ID_UNKNOWN);
+  Hal()->SendModifyWakeLock(nsString(aTopic), aLockAdjust, aHiddenAdjust, aProcessID);
+}
+
+void
+GetWakeLockInfo(const nsAString &aTopic, WakeLockInformation *aWakeLockInfo)
+{
+  Hal()->SendGetWakeLockInfo(nsString(aTopic), aWakeLockInfo);
+}
+
+void
+EnableSwitchNotifications(SwitchDevice aDevice)
+{
+  Hal()->SendEnableSwitchNotifications(aDevice);
+}
+
+void
+DisableSwitchNotifications(SwitchDevice aDevice)
+{
+  Hal()->SendDisableSwitchNotifications(aDevice);
+}
+
+SwitchState
+GetCurrentSwitchState(SwitchDevice aDevice)
+{
+  SwitchState state;
+  Hal()->SendGetCurrentSwitchState(aDevice, &state);
+  return state;
+}
+
+void
+NotifySwitchStateFromInputDevice(SwitchDevice aDevice, SwitchState aState)
+{
+  Hal()->SendNotifySwitchStateFromInputDevice(aDevice, aState);
+}
+
+bool
+EnableAlarm()
+{
+  NS_RUNTIMEABORT("Alarms can't be programmed from sandboxed contexts.  Yet.");
+  return false;
+}
+
+void
+DisableAlarm()
+{
+  NS_RUNTIMEABORT("Alarms can't be programmed from sandboxed contexts.  Yet.");
+}
+
+bool
+SetAlarm(int32_t aSeconds, int32_t aNanoseconds)
+{
+  NS_RUNTIMEABORT("Alarms can't be programmed from sandboxed contexts.  Yet.");
+  return false;
+}
+
+void
+SetProcessPriority(int aPid,
+                   ProcessPriority aPriority,
+                   ProcessCPUPriority aCPUPriority,
+                   uint32_t aBackgroundLRU)
+{
+  NS_RUNTIMEABORT("Only the main process may set processes' priorities.");
+}
+
+void
+EnableFMRadio(const hal::FMRadioSettings& aSettings)
+{
+  NS_RUNTIMEABORT("FM radio cannot be called from sandboxed contexts.");
+}
+
+void
+DisableFMRadio()
+{
+  NS_RUNTIMEABORT("FM radio cannot be called from sandboxed contexts.");
+}
+
+void
+FMRadioSeek(const hal::FMRadioSeekDirection& aDirection)
+{
+  NS_RUNTIMEABORT("FM radio cannot be called from sandboxed contexts.");
+}
+
+void
+GetFMRadioSettings(FMRadioSettings* aSettings)
+{
+  NS_RUNTIMEABORT("FM radio cannot be called from sandboxed contexts.");
+}
+
+void
+SetFMRadioFrequency(const uint32_t aFrequency)
+{
+  NS_RUNTIMEABORT("FM radio cannot be called from sandboxed contexts.");
+}
+
+uint32_t
+GetFMRadioFrequency()
+{
+  NS_RUNTIMEABORT("FM radio cannot be called from sandboxed contexts.");
+  return 0;
+}
+
+bool
+IsFMRadioOn()
+{
+  NS_RUNTIMEABORT("FM radio cannot be called from sandboxed contexts.");
+  return false;
+}
+
+uint32_t
+GetFMRadioSignalStrength()
+{
+  NS_RUNTIMEABORT("FM radio cannot be called from sandboxed contexts.");
+  return 0;
+}
+
+void
+CancelFMRadioSeek()
+{
+  NS_RUNTIMEABORT("FM radio cannot be called from sandboxed contexts.");
+}
+
+void
+FactoryReset()
+{
+  Hal()->SendFactoryReset();
+}
+
+void
+StartDiskSpaceWatcher()
+{
+  NS_RUNTIMEABORT("StartDiskSpaceWatcher() can't be called from sandboxed contexts.");
+}
+
+void
+StopDiskSpaceWatcher()
+{
+  NS_RUNTIMEABORT("StopDiskSpaceWatcher() can't be called from sandboxed contexts.");
+}
+
+class HalParent : public PHalParent
+                , public BatteryObserver
+                , public NetworkObserver
+                , public ISensorObserver
+                , public WakeLockObserver
+                , public ScreenConfigurationObserver
+                , public SwitchObserver
+                , public SystemClockChangeObserver
+                , public SystemTimezoneChangeObserver
+{
+public:
+  virtual void
+  ActorDestroy(ActorDestroyReason aWhy) MOZ_OVERRIDE
+  {
+    // NB: you *must* unconditionally unregister your observer here,
+    // if it *may* be registered below.
+    hal::UnregisterBatteryObserver(this);
+    hal::UnregisterNetworkObserver(this);
+    hal::UnregisterScreenConfigurationObserver(this);
+    for (int32_t sensor = SENSOR_UNKNOWN + 1;
+         sensor < NUM_SENSOR_TYPE; ++sensor) {
+      hal::UnregisterSensorObserver(SensorType(sensor), this);
+    }
+    hal::UnregisterWakeLockObserver(this);
+    hal::UnregisterSystemClockChangeObserver(this);
+    hal::UnregisterSystemTimezoneChangeObserver(this);
+    for (int32_t switchDevice = SWITCH_DEVICE_UNKNOWN + 1;
+         switchDevice < NUM_SWITCH_DEVICE; ++switchDevice) {
+      hal::UnregisterSwitchObserver(SwitchDevice(switchDevice), this);
+    }
+  }
+
+  virtual bool
+  RecvVibrate(const InfallibleTArray<unsigned int>& pattern,
+              const InfallibleTArray<uint64_t> &id,
+              PBrowserParent *browserParent) MOZ_OVERRIDE
+  {
+    // We give all content vibration permission.
+    TabParent *tabParent = static_cast<TabParent*>(browserParent);
+    nsCOMPtr<nsIDOMWindow> window =
+      do_QueryInterface(tabParent->GetBrowserDOMWindow());
+    WindowIdentifier newID(id, window);
+    hal::Vibrate(pattern, newID);
+    return true;
+  }
+
+  virtual bool
+  RecvCancelVibrate(const InfallibleTArray<uint64_t> &id,
+                    PBrowserParent *browserParent) MOZ_OVERRIDE
+  {
+    TabParent *tabParent = static_cast<TabParent*>(browserParent);
+    nsCOMPtr<nsIDOMWindow> window =
+      do_QueryInterface(tabParent->GetBrowserDOMWindow());
+    WindowIdentifier newID(id, window);
+    hal::CancelVibrate(newID);
+    return true;
+  }
+
+  virtual bool
+  RecvEnableBatteryNotifications() MOZ_OVERRIDE {
+    // We give all content battery-status permission.
+    hal::RegisterBatteryObserver(this);
+    return true;
+  }
+
+  virtual bool
+  RecvDisableBatteryNotifications() MOZ_OVERRIDE {
+    hal::UnregisterBatteryObserver(this);
+    return true;
+  }
+
+  virtual bool
+  RecvGetCurrentBatteryInformation(BatteryInformation* aBatteryInfo) MOZ_OVERRIDE {
+    // We give all content battery-status permission.
+    hal::GetCurrentBatteryInformation(aBatteryInfo);
+    return true;
+  }
+
+  void Notify(const BatteryInformation& aBatteryInfo) MOZ_OVERRIDE {
+    unused << SendNotifyBatteryChange(aBatteryInfo);
+  }
+
+  virtual bool
+  RecvEnableNetworkNotifications() MOZ_OVERRIDE {
+    // We give all content access to this network-status information.
+    hal::RegisterNetworkObserver(this);
+    return true;
+  }
+
+  virtual bool
+  RecvDisableNetworkNotifications() MOZ_OVERRIDE {
+    hal::UnregisterNetworkObserver(this);
+    return true;
+  }
+
+  virtual bool
+  RecvGetCurrentNetworkInformation(NetworkInformation* aNetworkInfo) MOZ_OVERRIDE {
+    hal::GetCurrentNetworkInformation(aNetworkInfo);
+    return true;
+  }
+
+  void Notify(const NetworkInformation& aNetworkInfo) {
+    unused << SendNotifyNetworkChange(aNetworkInfo);
+  }
+
+  virtual bool
+  RecvEnableScreenConfigurationNotifications() MOZ_OVERRIDE {
+    // Screen configuration is used to implement CSS and DOM
+    // properties, so all content already has access to this.
+    hal::RegisterScreenConfigurationObserver(this);
+    return true;
+  }
+
+  virtual bool
+  RecvDisableScreenConfigurationNotifications() MOZ_OVERRIDE {
+    hal::UnregisterScreenConfigurationObserver(this);
+    return true;
+  }
+
+  virtual bool
+  RecvGetCurrentScreenConfiguration(ScreenConfiguration* aScreenConfiguration) MOZ_OVERRIDE {
+    hal::GetCurrentScreenConfiguration(aScreenConfiguration);
+    return true;
+  }
+
+  virtual bool
+  RecvLockScreenOrientation(const dom::ScreenOrientation& aOrientation, bool* aAllowed) MOZ_OVERRIDE
+  {
+    // FIXME/bug 777980: unprivileged content may only lock
+    // orientation while fullscreen.  We should check whether the
+    // request comes from an actor in a process that might be
+    // fullscreen.  We don't have that information currently.
+    *aAllowed = hal::LockScreenOrientation(aOrientation);
+    return true;
+  }
+
+  virtual bool
+  RecvUnlockScreenOrientation() MOZ_OVERRIDE
+  {
+    hal::UnlockScreenOrientation();
+    return true;
+  }
+
+  void Notify(const ScreenConfiguration& aScreenConfiguration) {
+    unused << SendNotifyScreenConfigurationChange(aScreenConfiguration);
+  }
+
+  virtual bool
+  RecvGetScreenEnabled(bool *enabled) MOZ_OVERRIDE
+  {
+    if (!AssertAppProcessPermission(this, "power")) {
+      return false;
+    }
+    *enabled = hal::GetScreenEnabled();
+    return true;
+  }
+
+  virtual bool
+  RecvSetScreenEnabled(const bool &enabled) MOZ_OVERRIDE
+  {
+    if (!AssertAppProcessPermission(this, "power")) {
+      return false;
+    }
+    hal::SetScreenEnabled(enabled);
+    return true;
+  }
+
+  virtual bool
+  RecvGetCpuSleepAllowed(bool *allowed) MOZ_OVERRIDE
+  {
+    if (!AssertAppProcessPermission(this, "power")) {
+      return false;
+    }
+    *allowed = hal::GetCpuSleepAllowed();
+    return true;
+  }
+
+  virtual bool
+  RecvSetCpuSleepAllowed(const bool &allowed) MOZ_OVERRIDE
+  {
+    if (!AssertAppProcessPermission(this, "power")) {
+      return false;
+    }
+    hal::SetCpuSleepAllowed(allowed);
+    return true;
+  }
+
+  virtual bool
+  RecvGetScreenBrightness(double *brightness) MOZ_OVERRIDE
+  {
+    if (!AssertAppProcessPermission(this, "power")) {
+      return false;
+    }
+    *brightness = hal::GetScreenBrightness();
+    return true;
+  }
+
+  virtual bool
+  RecvSetScreenBrightness(const double &brightness) MOZ_OVERRIDE
+  {
+    if (!AssertAppProcessPermission(this, "power")) {
+      return false;
+    }
+    hal::SetScreenBrightness(brightness);
+    return true;
+  }
+
+  virtual bool
+  RecvSetLight(const LightType& aLight,  const hal::LightConfiguration& aConfig, bool *status) MOZ_OVERRIDE
+  {
+    // XXX currently, the hardware key light and screen backlight are
+    // controlled as a unit.  Those are set through the power API, and
+    // there's no other way to poke lights currently, so we require
+    // "power" privileges here.
+    if (!AssertAppProcessPermission(this, "power")) {
+      return false;
+    }
+    *status = hal::SetLight(aLight, aConfig);
+    return true;
+  }
+
+  virtual bool
+  RecvGetLight(const LightType& aLight, LightConfiguration* aConfig, bool* status) MOZ_OVERRIDE
+  {
+    if (!AssertAppProcessPermission(this, "power")) {
+      return false;
+    }
+    *status = hal::GetLight(aLight, aConfig);
+    return true;
+  }
+
+  virtual bool
+  RecvAdjustSystemClock(const int64_t &aDeltaMilliseconds) MOZ_OVERRIDE
+  {
+    if (!AssertAppProcessPermission(this, "time")) {
+      return false;
+    }
+    hal::AdjustSystemClock(aDeltaMilliseconds);
+    return true;
+  }
+
+  virtual bool 
+  RecvSetTimezone(const nsCString& aTimezoneSpec) MOZ_OVERRIDE
+  {
+    if (!AssertAppProcessPermission(this, "time")) {
+      return false;
+    }
+    hal::SetTimezone(aTimezoneSpec);
+    return true;  
+  }
+
+  virtual bool
+  RecvGetTimezone(nsCString *aTimezoneSpec) MOZ_OVERRIDE
+  {
+    if (!AssertAppProcessPermission(this, "time")) {
+      return false;
+    }
+    *aTimezoneSpec = hal::GetTimezone();
+    return true;
+  }
+
+  virtual bool
+  RecvGetTimezoneOffset(int32_t *aTimezoneOffset) MOZ_OVERRIDE
+  {
+    if (!AssertAppProcessPermission(this, "time")) {
+      return false;
+    }
+    *aTimezoneOffset = hal::GetTimezoneOffset();
+    return true;
+  }
+
+  virtual bool
+  RecvEnableSystemClockChangeNotifications() MOZ_OVERRIDE
+  {
+    hal::RegisterSystemClockChangeObserver(this);
+    return true;
+  }
+
+  virtual bool
+  RecvDisableSystemClockChangeNotifications() MOZ_OVERRIDE
+  {
+    hal::UnregisterSystemClockChangeObserver(this);
+    return true;
+  }
+
+  virtual bool
+  RecvEnableSystemTimezoneChangeNotifications() MOZ_OVERRIDE
+  {
+    hal::RegisterSystemTimezoneChangeObserver(this);
+    return true;
+  }
+
+  virtual bool
+  RecvDisableSystemTimezoneChangeNotifications() MOZ_OVERRIDE
+  {
+    hal::UnregisterSystemTimezoneChangeObserver(this);
+    return true;
+  }
+
+  virtual bool
+  RecvEnableSensorNotifications(const SensorType &aSensor) MOZ_OVERRIDE {
+    // We currently allow any content to register device-sensor
+    // listeners.
+    hal::RegisterSensorObserver(aSensor, this);
+    return true;
+  }
+   
+  virtual bool
+  RecvDisableSensorNotifications(const SensorType &aSensor) MOZ_OVERRIDE {
+    hal::UnregisterSensorObserver(aSensor, this);
+    return true;
+  }
+  
+  void Notify(const SensorData& aSensorData) {
+    unused << SendNotifySensorChange(aSensorData);
+  }
+
+  virtual bool
+  RecvModifyWakeLock(const nsString& aTopic,
+                     const WakeLockControl& aLockAdjust,
+                     const WakeLockControl& aHiddenAdjust,
+                     const uint64_t& aProcessID) MOZ_OVERRIDE
+  {
+    MOZ_ASSERT(aProcessID != CONTENT_PROCESS_ID_UNKNOWN);
+
+    // We allow arbitrary content to use wake locks.
+    hal::ModifyWakeLock(aTopic, aLockAdjust, aHiddenAdjust, aProcessID);
+    return true;
+  }
+
+  virtual bool
+  RecvEnableWakeLockNotifications() MOZ_OVERRIDE
+  {
+    // We allow arbitrary content to use wake locks.
+    hal::RegisterWakeLockObserver(this);
+    return true;
+  }
+   
+  virtual bool
+  RecvDisableWakeLockNotifications() MOZ_OVERRIDE
+  {
+    hal::UnregisterWakeLockObserver(this);
+    return true;
+  }
+
+  virtual bool
+  RecvGetWakeLockInfo(const nsString &aTopic, WakeLockInformation *aWakeLockInfo) MOZ_OVERRIDE
+  {
+    hal::GetWakeLockInfo(aTopic, aWakeLockInfo);
+    return true;
+  }
+  
+  void Notify(const WakeLockInformation& aWakeLockInfo)
+  {
+    unused << SendNotifyWakeLockChange(aWakeLockInfo);
+  }
+
+  virtual bool
+  RecvEnableSwitchNotifications(const SwitchDevice& aDevice) MOZ_OVERRIDE
+  {
+    // Content has no reason to listen to switch events currently.
+    hal::RegisterSwitchObserver(aDevice, this);
+    return true;
+  }
+
+  virtual bool
+  RecvDisableSwitchNotifications(const SwitchDevice& aDevice) MOZ_OVERRIDE
+  {
+    hal::UnregisterSwitchObserver(aDevice, this);
+    return true;
+  }
+
+  void Notify(const SwitchEvent& aSwitchEvent)
+  {
+    unused << SendNotifySwitchChange(aSwitchEvent);
+  }
+
+  virtual bool
+  RecvGetCurrentSwitchState(const SwitchDevice& aDevice, hal::SwitchState *aState) MOZ_OVERRIDE
+  {
+    // Content has no reason to listen to switch events currently.
+    *aState = hal::GetCurrentSwitchState(aDevice);
+    return true;
+  }
+
+  virtual bool
+  RecvNotifySwitchStateFromInputDevice(const SwitchDevice& aDevice,
+                                       const SwitchState& aState) MOZ_OVERRIDE
+  {
+    hal::NotifySwitchStateFromInputDevice(aDevice, aState);
+    return true;
+  }
+
+  void Notify(const int64_t& aClockDeltaMS)
+  {
+    unused << SendNotifySystemClockChange(aClockDeltaMS);
+  }
+
+  void Notify(const SystemTimezoneChangeInformation& aSystemTimezoneChangeInfo)
+  {
+    unused << SendNotifySystemTimezoneChange(aSystemTimezoneChangeInfo);
+  }
+
+  virtual bool
+  RecvFactoryReset()
+  {
+    if (!AssertAppProcessPermission(this, "power")) {
+      return false;
+    }
+    hal::FactoryReset();
+    return true;
+  }
+
+  virtual mozilla::ipc::IProtocol*
+  CloneProtocol(Channel* aChannel,
+                mozilla::ipc::ProtocolCloneContext* aCtx) MOZ_OVERRIDE
+  {
+    ContentParent* contentParent = aCtx->GetContentParent();
+    nsAutoPtr<PHalParent> actor(contentParent->AllocPHalParent());
+    if (!actor || !contentParent->RecvPHalConstructor(actor)) {
+      return nullptr;
+    }
+    return actor.forget();
+  }
+};
+
+class HalChild : public PHalChild {
+public:
+  virtual void
+  ActorDestroy(ActorDestroyReason aWhy) MOZ_OVERRIDE
+  {
+    sHalChildDestroyed = true;
+  }
+
+  virtual bool
+  RecvNotifyBatteryChange(const BatteryInformation& aBatteryInfo) MOZ_OVERRIDE {
+    hal::NotifyBatteryChange(aBatteryInfo);
+    return true;
+  }
+
+  virtual bool
+  RecvNotifySensorChange(const hal::SensorData &aSensorData) MOZ_OVERRIDE;
+
+  virtual bool
+  RecvNotifyNetworkChange(const NetworkInformation& aNetworkInfo) MOZ_OVERRIDE {
+    hal::NotifyNetworkChange(aNetworkInfo);
+    return true;
+  }
+
+  virtual bool
+  RecvNotifyWakeLockChange(const WakeLockInformation& aWakeLockInfo) MOZ_OVERRIDE {
+    hal::NotifyWakeLockChange(aWakeLockInfo);
+    return true;
+  }
+
+  virtual bool
+  RecvNotifyScreenConfigurationChange(const ScreenConfiguration& aScreenConfiguration) MOZ_OVERRIDE {
+    hal::NotifyScreenConfigurationChange(aScreenConfiguration);
+    return true;
+  }
+
+  virtual bool
+  RecvNotifySwitchChange(const mozilla::hal::SwitchEvent& aEvent) MOZ_OVERRIDE {
+    hal::NotifySwitchChange(aEvent);
+    return true;
+  }
+
+  virtual bool
+  RecvNotifySystemClockChange(const int64_t& aClockDeltaMS) {
+    hal::NotifySystemClockChange(aClockDeltaMS);
+    return true;
+  }
+
+  virtual bool
+  RecvNotifySystemTimezoneChange(
+    const SystemTimezoneChangeInformation& aSystemTimezoneChangeInfo) {
+    hal::NotifySystemTimezoneChange(aSystemTimezoneChangeInfo);
+    return true;
+  }
+};
+
+bool
+HalChild::RecvNotifySensorChange(const hal::SensorData &aSensorData) {
+  hal::NotifySensorChange(aSensorData);
+  
+  return true;
+}
+
+PHalChild* CreateHalChild() {
+  return new HalChild();
+}
+
+PHalParent* CreateHalParent() {
+  return new HalParent();
+}
+
+} // namespace hal_sandbox
+} // namespace mozilla