Always use chromium threads for IO in remoting host

remoting/host/remoting_me2me_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.
 //
 // This file implements a standalone host process for Me2Me.
 
 #include <string>
 
 #include "base/at_exit.h"
 #include "base/bind.h"
@@ skipping 339 matching lines @@
       StartHost();
     }
   }
 
   void StartHost() {
     DCHECK(context_->network_task_runner()->BelongsToCurrentThread());
     DCHECK(!host_);
 
     if (!signal_strategy_.get()) {
       signal_strategy_.reset(
-          new XmppSignalStrategy(context_->jingle_thread(), xmpp_login_,
-                                 xmpp_auth_token_, xmpp_auth_service_));
+          new XmppSignalStrategy(context_->url_request_context_getter(),
+                                 xmpp_login_, xmpp_auth_token_,
+                                 xmpp_auth_service_));
 
       signaling_connector_.reset(new SignalingConnector(
           signal_strategy_.get(),
           base::Bind(&HostProcess::OnAuthFailed, base::Unretained(this))));
 
       if (!oauth_refresh_token_.empty()) {
         OAuthClientInfo client_info = {
           kUnofficialOAuth2ClientId,
           kUnofficialOAuth2ClientSecret
         };
@@ skipping 246 matching lines @@
             user32.GetFunctionPointer("SetProcessDPIAware"));
     set_process_dpi_aware();
   }
 
   // CommandLine::Init() ignores the passed |argc| and |argv| on Windows getting
   // the command line from GetCommandLineW(), so we can safely pass NULL here.
   return main(0, NULL);
 }
 
 #endif  // defined(OS_WIN)