[chromoting] Fix crash when generating access code

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, which is currently
 // used for the Linux-only Virtual Me2Me build.
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
@@ skipping 220 matching lines @@
     DCHECK(!host_);
 
     if (!signal_strategy_.get()) {
       signal_strategy_.reset(
           new XmppSignalStrategy(context_->jingle_thread(), xmpp_login_,
                                  xmpp_auth_token_, xmpp_auth_service_));
       signaling_connector_.reset(
           new SignalingConnector(signal_strategy_.get()));
     }
 
-    if (!desktop_environment_.get())
-      desktop_environment_ = DesktopEnvironment::Create(context_.get());
+    if (!desktop_environment_.get()) {
+      desktop_environment_ =
+          DesktopEnvironment::CreateForService(context_.get());
+    }
 
     protocol::NetworkSettings network_settings(allow_nat_traversal_);
     if (!allow_nat_traversal_) {
       network_settings.min_port = kMinPortNumber;
       network_settings.max_port = kMaxPortNumber;
     }
 
     host_ = new ChromotingHost(
         context_.get(), signal_strategy_.get(), desktop_environment_.get(),
         network_settings);
@@ skipping 97 matching lines @@
 int CALLBACK WinMain(HINSTANCE instance,
                      HINSTANCE previous_instance,
                      LPSTR command_line,
                      int show_command) {
   // 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