S3 devices should not be rebooted in provision step.

build/android/buildbot/bb_run_bot.py

 #!/usr/bin/env python
 #
 # Copyright (c) 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.
 
 import collections
 import copy
 import json
 import os
@@ skipping 86 matching lines @@
   Returns:
     list of Command objects.
   """
   property_args = bb_utils.EncodeProperties(options)
   commands = [[bot_config.host_obj.script,
                '--steps=%s' % ','.join(bot_config.host_obj.host_steps)] +
               property_args + (bot_config.host_obj.extra_args or [])]
 
   test_obj = bot_config.test_obj
   if test_obj:
-    run_test_cmd = [test_obj.script, '--reboot'] + property_args
+    run_test_cmd = [test_obj.script] + property_args
     for test in test_obj.tests:
       run_test_cmd.extend(['-f', test])
     if test_obj.extra_args:
       run_test_cmd.extend(test_obj.extra_args)
     commands.append(run_test_cmd)
   return commands
 
 
 def GetBotStepMap():
   compile_step = ['compile']
@@ skipping 165 matching lines @@
   for command in commands:
     print 'Will run: ', bb_utils.CommandToString(command)
   print
 
   env = GetEnvironment(bot_config.host_obj, options.testing)
   return RunBotCommands(options, commands, env)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))