[DeviceService] Expose battery monitoring solely via the Device Service

device/battery/battery_monitor_impl.h

-// Copyright 2014 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_BATTERY_BATTERY_MONITOR_IMPL_H_
-#define DEVICE_BATTERY_BATTERY_MONITOR_IMPL_H_
-
-#include <memory>
-
-#include "base/macros.h"
-#include "device/battery/battery_export.h"
-#include "device/battery/battery_monitor.mojom.h"
-#include "device/battery/battery_status_service.h"
-#include "mojo/public/cpp/bindings/strong_binding.h"
-
-namespace device {
-
-class BatteryMonitorImpl : public mojom::BatteryMonitor {
- public:
-  DEVICE_BATTERY_EXPORT static void Create(
-      mojom::BatteryMonitorRequest request);
-
-  BatteryMonitorImpl();
-  ~BatteryMonitorImpl() override;
-
- private:
-  // mojom::BatteryMonitor methods:
-  void QueryNextStatus(const QueryNextStatusCallback& callback) override;
-
-  void RegisterSubscription();
-  void DidChange(const mojom::BatteryStatus& battery_status);
-  void ReportStatus();
-
-  mojo::StrongBindingPtr<mojom::BatteryMonitor> binding_;
-  std::unique_ptr<BatteryStatusService::BatteryUpdateSubscription>
-      subscription_;
-  QueryNextStatusCallback callback_;
-  mojom::BatteryStatus status_;
-  bool status_to_report_;
-
-  DISALLOW_COPY_AND_ASSIGN(BatteryMonitorImpl);
-};
-
-}  // namespace device
-
-#endif  // DEVICE_BATTERY_BATTERY_MONITOR_IMPL_H_