Create a cros directory under client, and start moving things into it.

client/common_lib/site_auth_server_unittest.py

 #!/usr/bin/python
 
 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """GoogleAuthServer unittest."""
 
 import logging, os, sys, threading, time, unittest, urllib
-from autotest_lib.client.bin import chromeos_constants
 from autotest_lib.client.common_lib import site_auth_server
+from autotest_lib.client.cros import constants as chromeos_constants
 from site_auth_server import GoogleAuthServer
 
 class test_auth_server(unittest.TestCase):
     def setUp(self):
         print "starting"
         self._ssl_port=50030
         creds_path = (os.path.dirname(os.path.realpath( __file__)) +
                       '/site_httpd_unittest_server')
 
         self._test_server = GoogleAuthServer(port=self._ssl_port,
@@ skipping 39 matching lines @@
             ta_format = ('https://localhost:%s%s?auth=%s&' +
                          'continue=https://localhost:%s/webhp')
             ta_resp = urllib.urlopen(
                 ta_format % (self._ssl_port,
                              chromeos_constants.TOKEN_AUTH_URL,
                              args,
                              self._ssl_port)).read()
         except IOError, e:
             pass
         self._test_server.wait_for_test_over()