[DeviceService] Move PowerMonitor interfaces, client lib, impl to live in Device Service

device/power_monitor/power_monitor_message_broadcaster.h

-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef DEVICE_POWER_MONITOR_POWER_MONITOR_MESSAGE_BROADCASTER_H_
-#define DEVICE_POWER_MONITOR_POWER_MONITOR_MESSAGE_BROADCASTER_H_
-
-#include "base/macros.h"
-#include "base/power_monitor/power_observer.h"
-#include "device/power_monitor/power_monitor_export.h"
-#include "device/power_monitor/public/interfaces/power_monitor.mojom.h"
-
-namespace device {
-
-// A class used to monitor the power state change and communicate it to child
-// processes via IPC.
-class DEVICE_POWER_MONITOR_EXPORT PowerMonitorMessageBroadcaster
-    : public base::PowerObserver,
-      NON_EXPORTED_BASE(public device::mojom::PowerMonitor) {
- public:
-  explicit PowerMonitorMessageBroadcaster();
-  ~PowerMonitorMessageBroadcaster() override;
-
-  static void Create(device::mojom::PowerMonitorRequest request);
-
-  // device::mojom::PowerMonitor:
-  void SetClient(
-      device::mojom::PowerMonitorClientPtr power_monitor_client) override;
-
-  // base::PowerObserver:
-  void OnPowerStateChange(bool on_battery_power) override;
-  void OnSuspend() override;
-  void OnResume() override;
-
- private:
-  device::mojom::PowerMonitorClientPtr power_monitor_client_;
-
-  DISALLOW_COPY_AND_ASSIGN(PowerMonitorMessageBroadcaster);
-};
-
-}  // namespace device
-
-#endif  // DEVICE_POWER_MONITOR_POWER_MONITOR_MESSAGE_BROADCASTER_H_