It is time.

ui/events/ozone/device/udev/device_manager_udev.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 UI_EVENTS_OZONE_DEVICE_UDEV_DEVICE_MANAGER_UDEV_H_
-#define UI_EVENTS_OZONE_DEVICE_UDEV_DEVICE_MANAGER_UDEV_H_
-
-#include "base/message_loop/message_pump_libevent.h"
-#include "base/observer_list.h"
-#include "device/udev_linux/udev.h"
-#include "ui/events/ozone/device/device_manager.h"
-
-namespace ui {
-
-class DeviceEvent;
-class DeviceEventObserver;
-
-class DeviceManagerUdev
-    : public DeviceManager, base::MessagePumpLibevent::Watcher {
- public:
-  DeviceManagerUdev();
-  virtual ~DeviceManagerUdev();
-
- private:
-  scoped_ptr<DeviceEvent> ProcessMessage(udev_device* device);
-
-  // Creates a device-monitor to look for device add/remove/change events.
-  void CreateMonitor();
-
-  // DeviceManager overrides:
-  virtual void ScanDevices(DeviceEventObserver* observer) override;
-  virtual void AddObserver(DeviceEventObserver* observer) override;
-  virtual void RemoveObserver(DeviceEventObserver* observer) override;
-
-  // base::MessagePumpLibevent::Watcher overrides:
-  virtual void OnFileCanReadWithoutBlocking(int fd) override;
-  virtual void OnFileCanWriteWithoutBlocking(int fd) override;
-
-  device::ScopedUdevPtr udev_;
-  device::ScopedUdevMonitorPtr monitor_;
-
-  base::MessagePumpLibevent::FileDescriptorWatcher controller_;
-
-  ObserverList<DeviceEventObserver> observers_;
-
-  DISALLOW_COPY_AND_ASSIGN(DeviceManagerUdev);
-};
-
-}  // namespace ui
-
-#endif  // UI_EVENTS_OZONE_DEVICE_UDEV_DEVICE_MANAGER_UDEV_H_