Revert of Replace Chrome IPC with Mojo IPC for querying BatteryStatus 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.
-
-#include "base/memory/scoped_ptr.h"
-#include "device/battery/battery_export.h"
-#include "device/battery/battery_monitor.mojom.h"
-#include "device/battery/battery_status_service.h"
-
-#ifndef DEVICE_BATTERY_BATTERY_MONITOR_IMPL_H_
-#define DEVICE_BATTERY_BATTERY_MONITOR_IMPL_H_
-
-namespace device {
-
-class BatteryMonitorImpl : public mojo::InterfaceImpl<BatteryMonitor> {
- public:
-  DEVICE_BATTERY_EXPORT static void Create(
-      mojo::InterfaceRequest<BatteryMonitor> request);
-
- private:
-  BatteryMonitorImpl();
-  virtual ~BatteryMonitorImpl();
-
-  // mojo::InterfaceImpl<..> methods:
-  virtual void OnConnectionEstablished() override;
-
-  void DidChange(const BatteryStatus& battery_status);
-
-  scoped_ptr<BatteryStatusService::BatteryUpdateSubscription> subscription_;
-};
-
-}  // namespace device
-
-#endif  // DEVICE_BATTERY_BATTERY_MONITOR_IMPL_H_