Improve handling of invalid command line in Me2Me host.

remoting/host/host_exit_codes.cc

 // Copyright 2013 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 "remoting/host/host_exit_codes.h"
 
 #include "remoting/protocol/name_value_map.h"
 
 using remoting::protocol::NameMapElement;
 
 namespace remoting {
 
 const NameMapElement<HostExitCodes> kHostExitCodeStrings[] = {
   { kSuccessExitCode, "SUCCESS_EXIT" },
   { kInitializationFailed, "INITIALIZATION_FAILED" },
+  { kInvalidCommandLineExitCode, "INVALID_COMMAND_LINE" },
   { kInvalidHostConfigurationExitCode, "INVALID_HOST_CONFIGURATION" },
   { kInvalidHostIdExitCode, "INVALID_HOST_ID" },
   { kInvalidOauthCredentialsExitCode, "INVALID_OAUTH_CREDENTIALS" },
   { kInvalidHostDomainExitCode, "INVALID_HOST_DOMAIN" },
   { kLoginScreenNotSupportedExitCode, "LOGIN_SCREEN_NOT_SUPPORTED" },
   { kUsernameMismatchExitCode, "USERNAME_MISMATCH" },
 };
 
 const char* ExitCodeToString(HostExitCodes exit_code) {
   return ValueToName(kHostExitCodeStrings, exit_code);
 }
 
 }  // namespace remoting