Roll back change list 2838024.

autotest

 #!/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.
 #
 # A python wrapper to call autotest ebuild.
 
 import commands, logging, optparse, os, subprocess, sys
 
@@ skipping 167 matching lines @@
         sys.exit(0)
     test_list = all_tests
   else:
     test_list = options.build
 
   environ['FEATURES'] = ('%s -buildpkg -collision-protect' %
                          environ.get('FEATURES', ''))
   environ['TEST_LIST'] = test_list
   environ['USE'] = use_flag
   emerge_cmd = ['emerge-%s' % options.board,
-                '-uDn',
                 'chromeos-base/autotest']
   if emerge_jobs:
     emerge_cmd.append(emerge_jobs)
   return run(emerge_cmd)
 
 
 def run_autoserv(options, args):
   environ = os.environ
 
   environ['AUTOSERV_TEST_ARGS'] = options.args
@@ skipping 25 matching lines @@
       die(common_sh, 'build_autotest failed.')
   else:
     ssh_key_file = os.path.join(os.path.dirname(me),
                                 'mod_for_test_scripts/ssh_keys/testing_rsa')
     os.chmod(ssh_key_file, 0400)
     run_autoserv(options, args)
 
 
 if __name__ == '__main__':
   main()