Convert //remoting to use std::unique_ptr

remoting/host/setup/start_host.cc

 // Copyright (c) 2012 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.
 //
 // A simple command-line app that registers and starts a host.
 
 #include <stddef.h>
 #include <stdio.h>
 
 #include "base/at_exit.h"
@@ skipping 172 matching lines @@
   base::Thread file_thread("file thread");
   file_thread.StartWithOptions(io_thread_options);
 
   scoped_refptr<net::URLRequestContextGetter> url_request_context_getter(
       new remoting::URLRequestContextGetter(io_thread.task_runner(),
                                             file_thread.task_runner()));
 
   net::URLFetcher::SetIgnoreCertificateRequests(true);
 
   // Start the host.
-  scoped_ptr<HostStarter> host_starter(HostStarter::Create(
+  std::unique_ptr<HostStarter> host_starter(HostStarter::Create(
       remoting::ServiceUrls::GetInstance()->directory_hosts_url(),
       url_request_context_getter.get()));
   if (redirect_url.empty()) {
     redirect_url = remoting::GetDefaultOauthRedirectUrl();
   }
   host_starter->StartHost(host_name, host_pin, true, auth_code, redirect_url,
                           base::Bind(&OnDone));
 
   // Run the message loop until the StartHost completion callback.
   base::RunLoop run_loop;
   run_loop.Run();
 
   g_message_loop = nullptr;
 
   // Destroy the HostStarter and URLRequestContextGetter before stopping the
   // IO thread.
   host_starter.reset();
   url_request_context_getter = nullptr;
 
   io_thread.Stop();
 
   return g_started ? 0 : 1;
 }