[Android] Fix time zone handling when setting the date in provision_devices.

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>]
@@ skipping 351 matching lines @@
   if options.max_battery_temp is not None:
     try:
       battery = battery_utils.BatteryUtils(device)
       battery.LetBatteryCoolToTemperature(options.max_battery_temp)
     except device_errors.CommandFailedError:
       logging.exception('Unable to let battery cool to specified temperature.')
 
   def _set_and_verify_date():
     if device.build_version_sdk >= version_codes.MARSHMALLOW:
       date_format = '%m%d%H%M%Y.%S'
-      set_date_command = ['date']
+      set_date_command = ['date', '-u']

[ghost stip (do not use), 2016/05/13 20:32:48]

do we need to mirror this logic in https://goto.google.com/ldsfv ?

     else:
       date_format = '%Y%m%d.%H%M%S'
-      set_date_command = ['date', '-s']
+      set_date_command = ['date', '-u', '-s']
     strgmtime = time.strftime(date_format, time.gmtime())
     set_date_command.append(strgmtime)
     device.RunShellCommand(set_date_command, as_root=True, check_return=True)
 
     device_time = device.RunShellCommand(
-        ['date', '+"%Y%m%d.%H%M%S"'], as_root=True,
+        ['date', '-u', '+"%Y%m%d.%H%M%S"'], as_root=True,
         single_line=True).replace('"', '')
     device_time = datetime.datetime.strptime(device_time, "%Y%m%d.%H%M%S")
     correct_time = datetime.datetime.strptime(strgmtime, date_format)
     tdelta = (correct_time - device_time).seconds
     if tdelta <= 1:
       logging.info('Date/time successfully set on %s', device)
       return True
     else:
       logging.error('Date mismatch. Device: %s Correct: %s',
                     device_time.isoformat(), correct_time.isoformat())
@@ skipping 155 matching lines @@
       },
     }
 
   devil_chromium.Initialize(custom_deps=devil_custom_deps)
 
   return ProvisionDevices(args)
 
 
 if __name__ == '__main__':
   sys.exit(main())