Replace scoped_ptr with std::unique_ptr in //ui

ui/events/ozone/device/device_manager.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_DEVICE_MANAGER_H_
 #define UI_EVENTS_OZONE_DEVICE_DEVICE_MANAGER_H_
 
-#include "base/memory/scoped_ptr.h"
+#include <memory>
+
 #include "ui/events/ozone/events_ozone_export.h"
 
 namespace ui {
 
 class DeviceEventObserver;
 
 class EVENTS_OZONE_EXPORT DeviceManager {
  public:
   virtual ~DeviceManager() {}
 
   // Scans the currently available devices and notifies |observer| for each
   // device found. If also registering for notifications through AddObserver(),
   // the scan should happen after the registration otherwise the observer may
   // miss events.
   virtual void ScanDevices(DeviceEventObserver* observer) = 0;
 
   // Registers |observer| for device event notifications.
   virtual void AddObserver(DeviceEventObserver* observer) = 0;
 
   // Removes |observer| from the list of observers notified.
   virtual void RemoveObserver(DeviceEventObserver* observer) = 0;
 };
 
-EVENTS_OZONE_EXPORT scoped_ptr<DeviceManager> CreateDeviceManager();
+EVENTS_OZONE_EXPORT std::unique_ptr<DeviceManager> CreateDeviceManager();
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_OZONE_DEVICE_DEVICE_MANAGER_H_