Convert //chrome/browser/chromeos from scoped_ptr to std::unique_ptr

chrome/browser/chromeos/login/screens/hid_detection_screen.cc

 // 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.
 
 #include "chrome/browser/chromeos/login/screens/hid_detection_screen.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/metrics/histogram.h"
@@ skipping 515 matching lines @@
            bt_devices.begin();
        it != bt_devices.end() &&
            (keyboard_device_id_.empty() || pointing_device_id_.empty());
        ++it) {
     TryPairingAsPointingDevice(*it);
     TryPairingAsKeyboardDevice(*it);
   }
 }
 
 void HIDDetectionScreen::OnStartDiscoverySession(
-    scoped_ptr<device::BluetoothDiscoverySession> discovery_session) {
+    std::unique_ptr<device::BluetoothDiscoverySession> discovery_session) {
   VLOG(1) << "BT Discovery session started";
   discovery_session_ = std::move(discovery_session);
   UpdateDevices();
 }
 
 void HIDDetectionScreen::SetPoweredError() {
   LOG(ERROR) << "Failed to power BT adapter";
 }
 
 void HIDDetectionScreen::SetPoweredOffError() {
   LOG(ERROR) << "Failed to power off BT adapter";
 }
 
 void HIDDetectionScreen::FindDevicesError() {
   VLOG(1) << "Failed to start Bluetooth discovery.";
 }
 
 
 }  // namespace chromeos