Update android device provisioning script to set some reliability settings.

build/android/provision_devices.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.
 
 """Provisions Android devices with settings required for bots.
 
 Usage:
   ./provision_devices.py [-d <device serial number>]
 """
 
 import optparse
 import os
 import re
 import subprocess
 import sys
 import time
 
 from pylib import android_commands
 from pylib import constants
+from pylib import device_settings
+
 
 def KillHostHeartbeat():
   ps = subprocess.Popen(['ps', 'aux'], stdout = subprocess.PIPE)
   stdout, _ = ps.communicate()
   matches = re.findall('\\n.*host_heartbeat.*', stdout)
   for match in matches:
     print 'An instance of host heart beart running... will kill'
     pid = re.findall('(\d+)', match)[1]
     subprocess.call(['kill', str(pid)])
 
@@ skipping 26 matching lines @@
     adb_reboot = os.path.join(constants.DIR_SOURCE_ROOT,
                               'out/%s/adb_reboot' % target)
     android_cmd.PushIfNeeded(adb_reboot, '/data/local/tmp/')
     # Launch adb_reboot
     print '  Launching adb_reboot ...'
     p = subprocess.Popen(['adb', '-s', device, 'shell'], stdin=subprocess.PIPE)
     p.communicate('/data/local/tmp/adb_reboot; exit\n')
   LaunchHostHeartbeat()
 
 
+def _ConfigureLocalProperties(adb):
+  """Set standard readonly testing device properties prior to reboot."""
+  local_props = ['ro.monkey=1',

[bulach, 2014/02/26 15:23:59]

ultra nit: perhaps:
local_props = [
  ...,
  ...,
]

[tonyg, 2014/02/26 16:52:58]

Done.

+                 'ro.test_harness=1',
+                 'ro.audio.silent=1',
+                 'ro.setupwizard.mode=DISABLED']
+  adb.SetProtectedFileContents(android_commands.LOCAL_PROPERTIES_PATH,
+                               '\n'.join(local_props))
+  # Android will not respect the local props file if it is world writable.
+  adb.RunShellCommandWithSU('chmod 644 %s' %
+                            android_commands.LOCAL_PROPERTIES_PATH)
+
+
 def ProvisionDevices(options):
   if options.device is not None:
     devices = [options.device]
   else:
     devices = android_commands.GetAttachedDevices()
   for device in devices:
     android_cmd = android_commands.AndroidCommands(device)
+    _ConfigureLocalProperties(android_cmd)
+    device_settings.ConfigureContentSettingsDict(
+        android_cmd, device_settings.DETERMINISTIC_DEVICE_SETTINGS)
+    # TODO(tonyg): We eventually want network on. However, currently radios
+    # can cause perfbots to drain faster than they charge.
+    if 'Perf' in os.environ.get('BUILDBOT_BUILDERNAME', ''):

[bulach, 2014/02/26 15:23:59]

nit: s/Perf/ and use a .lower()
so this would work downstream too ;)
(and yes, we should eventually converge those names, but anyways..).

[tonyg, 2014/02/26 16:52:58]

Done.

+      device_settings.ConfigureContentSettingsDict(
+          android_cmd, device_settings.NETWORK_DISABLED_SETTINGS)
     android_cmd.RunShellCommandWithSU('date -u %f' % time.time())
   if options.auto_reconnect:
     PushAndLaunchAdbReboot(devices, options.target)
 
 
 def main(argv):
   parser = optparse.OptionParser()
   parser.add_option('-d', '--device',
                     help='The serial number of the device to be provisioned')
   parser.add_option('-t', '--target', default='Debug', help='The build target')
   parser.add_option(
       '-r', '--auto-reconnect', action='store_true',
       help='Push binary which will reboot the device on adb disconnections.')
   options, args = parser.parse_args(argv[1:])
   constants.SetBuildType(options.target)
 
   if args:
     print >> sys.stderr, 'Unused args %s' % args
     return 1
 
   ProvisionDevices(options)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))