Uses ProxyConfigServiceLinux in the chromoting host to configure proxy.

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.
 
 #include <stdio.h>
 #include <termios.h>
 
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/run_loop.h"
@@ skipping 127 matching lines @@
     auth_code = ReadString(true);
   }
 
   // This object instance is required by Chrome code (for example,
   // FilePath, LazyInstance, MessageLoop).
   base::AtExitManager exit_manager;
 
   // Provide message loops and threads for the URLRequestContextGetter.
   base::MessageLoop message_loop;
   g_message_loop = &message_loop;
+  base::Thread::Options io_thread_options(base::MessageLoop::TYPE_IO, 0);
   base::Thread io_thread("IO thread");
-  base::Thread::Options io_thread_options(base::MessageLoop::TYPE_IO, 0);
   io_thread.StartWithOptions(io_thread_options);
+  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.message_loop_proxy()));
+      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(
       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 = NULL;
 
   // Destroy the HostStarter and URLRequestContextGetter before stopping the
   // IO thread.
   host_starter.reset();
   url_request_context_getter = NULL;
 
   io_thread.Stop();
 
   return g_started ? 0 : 1;
 }