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

chrome/browser/chromeos/login/screens/host_pairing_screen.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 CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_HOST_PAIRING_SCREEN_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_HOST_PAIRING_SCREEN_H_
 
 #include "base/macros.h"
 #include "chrome/browser/chromeos/login/enrollment/enterprise_enrollment_helper.h"
 #include "chrome/browser/chromeos/login/screens/base_screen.h"
@@ skipping 68 matching lines @@
   void OnAuthCleared();
   void OnAnyEnrollmentError();
 
   Delegate* delegate_;
 
   HostPairingScreenActor* actor_;
 
   // Controller performing pairing. Owned by the wizard controller.
   pairing_chromeos::HostPairingController* remora_controller_;
 
-  scoped_ptr<EnterpriseEnrollmentHelper> enrollment_helper_;
+  std::unique_ptr<EnterpriseEnrollmentHelper> enrollment_helper_;
 
   // Current stage of pairing process.
   Stage current_stage_;
 
   base::WeakPtrFactory<HostPairingScreen> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(HostPairingScreen);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_HOST_PAIRING_SCREEN_H_