[Chromoting] Implement the host domain policy.

remoting/tools/me2me_virtual_host.py

 #!/usr/bin/env python
 # 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.
 
 # Virtual Me2Me implementation.  This script runs and manages the processes
 # required for a Virtual Me2Me desktop, which are: X server, X desktop
 # session, and Host process.
 # This script is intended to run continuously as a background daemon
 # process, running under an ordinary (non-root) user account.
@@ skipping 856 matching lines @@
         except:
           pass
         return 0
       elif os.WEXITSTATUS(status) == 4:
         logging.info("OAuth credentials are invalid - exiting.")
         try:
           os.remove(auth.config_file)
         except:
           pass
         return 0
+      elif os.WEXITSTATUS(status) == 5:
+        logging.info("Host domain is blocked by policy - exiting.")
+        os.remove(host.config_file)
+        return 0
 
 if __name__ == "__main__":
   logging.basicConfig(level=logging.DEBUG)
   sys.exit(main())