Replace scoped_ptr with std::unique_ptr in //ui

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