Update from https://crrev.com/306655

build/android/pylib/device_settings.py

 # Copyright 2014 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 logging
 
 from pylib import constants
 from pylib import content_settings
 
 _LOCK_SCREEN_SETTINGS_PATH = '/data/system/locksettings.db'
@@ skipping 63 matching lines @@
 
   def get_lock_settings(table):
     return [(table, 'lockscreen.disabled', '1'),
             (table, 'lockscreen.password_type', PASSWORD_QUALITY_UNSPECIFIED),
             (table, 'lockscreen.password_type_alternate',
              PASSWORD_QUALITY_UNSPECIFIED)]
 
   if device.FileExists(_LOCK_SCREEN_SETTINGS_PATH):
     db = _LOCK_SCREEN_SETTINGS_PATH
     locksettings = get_lock_settings('locksettings')
+    columns = ['name', 'user', 'value']
+    generate_values = lambda k, v: [k, '0', v]
   elif device.FileExists(_ALTERNATE_LOCK_SCREEN_SETTINGS_PATH):
     db = _ALTERNATE_LOCK_SCREEN_SETTINGS_PATH
     locksettings = get_lock_settings('secure') + get_lock_settings('system')
+    columns = ['name', 'value']
+    generate_values = lambda k, v: [k, v]
   else:
     logging.warning('Unable to find database file to set lock screen settings.')
     return
 
   for table, key, value in locksettings:
     # Set the lockscreen setting for default user '0'
-    columns = ['name', 'user', 'value']
-    values = [key, '0', value]
+    values = generate_values(key, value)
 
     cmd = """begin transaction;
 delete from '%(table)s' where %(primary_key)s='%(primary_value)s';
 insert into '%(table)s' (%(columns)s) values (%(values)s);
 commit transaction;""" % {
       'table': table,
       'primary_key': columns[0],
       'primary_value': values[0],
       'columns': ', '.join(columns),
       'values': ', '.join(["'%s'" % value for value in values])
@@ skipping 79 matching lines @@
     ('user_rotation', 0),
   ]),
 ]
 
 NETWORK_DISABLED_SETTINGS = [
   ('settings/global', [
     ('airplane_mode_on', 1),
     ('wifi_on', 0),
   ]),
 ]