Migrates battery_status from content/renderer/ to WebKit/platform/

content/renderer/battery_status/battery_status_dispatcher.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 CONTENT_RENDERER_BATTERY_STATUS_BATTERY_STATUS_DISPATCHER_H_
-#define CONTENT_RENDERER_BATTERY_STATUS_BATTERY_STATUS_DISPATCHER_H_
-
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-#include "content/common/content_export.h"
-#include "device/battery/battery_monitor.mojom.h"
-
-namespace blink {
-class WebBatteryStatusListener;
-}
-
-namespace content {
-
-class CONTENT_EXPORT BatteryStatusDispatcher {
- public:
-  explicit BatteryStatusDispatcher(blink::WebBatteryStatusListener* listener);
-  ~BatteryStatusDispatcher();
-
- private:
-  friend class BatteryStatusDispatcherTest;
-
-  void QueryNextStatus();
-  void DidChange(device::BatteryStatusPtr battery_status);
-
-  device::BatteryMonitorPtr monitor_;
-  blink::WebBatteryStatusListener* listener_;
-
-  DISALLOW_COPY_AND_ASSIGN(BatteryStatusDispatcher);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_RENDERER_BATTERY_STATUS_BATTERY_STATUS_DISPATCHER_H_