Convert //components/proximity_auth from scoped_ptr to std::unique_ptr

components/proximity_auth/cryptauth_enroller_factory_impl.cc

 // Copyright 2015 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 "components/proximity_auth/cryptauth_enroller_factory_impl.h"
 
+#include "base/memory/ptr_util.h"
 #include "components/proximity_auth/cryptauth/cryptauth_client_impl.h"
 #include "components/proximity_auth/cryptauth/cryptauth_enroller_impl.h"
 #include "components/proximity_auth/cryptauth/secure_message_delegate.h"
 
 namespace proximity_auth {
 
 CryptAuthEnrollerFactoryImpl::CryptAuthEnrollerFactoryImpl(
     ProximityAuthClient* proximity_auth_client)
     : proximity_auth_client_(proximity_auth_client) {}
 
 CryptAuthEnrollerFactoryImpl::~CryptAuthEnrollerFactoryImpl() {}
 
-scoped_ptr<CryptAuthEnroller> CryptAuthEnrollerFactoryImpl::CreateInstance() {
-  return make_scoped_ptr(new CryptAuthEnrollerImpl(
+std::unique_ptr<CryptAuthEnroller>
+CryptAuthEnrollerFactoryImpl::CreateInstance() {
+  return base::WrapUnique(new CryptAuthEnrollerImpl(
       proximity_auth_client_->CreateCryptAuthClientFactory(),
       proximity_auth_client_->CreateSecureMessageDelegate()));
 }
 
 }  // namespace proximity_auth