Move device/core files to device/base directory.

device/core/device_monitor_win.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_CORE_DEVICE_MONITOR_WIN_H_
-#define DEVICE_CORE_DEVICE_MONITOR_WIN_H_
-
-#include <windows.h>
-
-#include "base/observer_list.h"
-#include "device/core/device_core_export.h"
-
-namespace device {
-
-// Use an instance of this class to observe devices being added and removed
-// from the system, matched by device interface GUID.
-class DEVICE_CORE_EXPORT DeviceMonitorWin {
- public:
-  class DEVICE_CORE_EXPORT Observer {
-   public:
-    virtual void OnDeviceAdded(const GUID& class_guid,
-                               const std::string& device_path);
-    virtual void OnDeviceRemoved(const GUID& class_guid,
-                                 const std::string& device_path);
-  };
-
-  ~DeviceMonitorWin();
-
-  static DeviceMonitorWin* GetForDeviceInterface(const GUID& guid);
-  static DeviceMonitorWin* GetForAllInterfaces();
-
-  void AddObserver(Observer* observer);
-  void RemoveObserver(Observer* observer);
-
- private:
-  friend class DeviceMonitorMessageWindow;
-
-  DeviceMonitorWin();
-
-  void NotifyDeviceAdded(const GUID& class_guid,
-                         const std::string& device_path);
-  void NotifyDeviceRemoved(const GUID& class_guid,
-                           const std::string& device_path);
-
-  base::ObserverList<Observer> observer_list_;
-};
-
-}  // namespace device
-
-#endif  // DEVICE_CORE_DEVICE_MONITOR_WIN_H_