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

client/site_tests/security_RestartJob/security_RestartJob.py

 # 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.
 
 import dbus
 import logging
 import os.path
 import subprocess
 
-from autotest_lib.client.bin import chromeos_constants
 from autotest_lib.client.bin import site_login, test, utils
 from autotest_lib.client.common_lib import error
-
+from autotest_lib.client.cros import constants as chromeos_constants
 
 class security_RestartJob(test.test):
     version = 1
     _FLAGFILE = '/tmp/security_RestartJob_regression'
 
     def _ps(self, proc=chromeos_constants.BROWSER):
         pscmd = 'ps -C %s -o pid --no-header | head -1' % proc
         return utils.system_output(pscmd)
 
     def run_once(self):
@@ skipping 21 matching lines @@
         sessionmanager.RestartJob(pid, cmd)
 
         testfail = os.path.exists(self._FLAGFILE)
 
         # Clean up, before we throw our TestFail, since this test
         # killed chrome and mangled its argv...
         site_login.nuke_login_manager()
 
         if testfail:
             raise error.TestFail('RestartJob regression, see cros bug 7018')