[Android] Add a custom pylintrc for build/android/.

build/android/devil/android/battery_utils.py

 # Copyright 2015 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.
 
 """Provides a variety of device interactions with power.
 """
 # pylint: disable=unused-argument
 
 import collections
 import contextlib
 import csv
 import logging
 
 from devil.android import decorators
 from devil.android import device_errors
 from devil.android import device_utils
 from devil.android.sdk import version_codes
 from devil.utils import timeout_retry
-from pylib import constants
 
 _DEFAULT_TIMEOUT = 30
 _DEFAULT_RETRIES = 3
 
 
 _DEVICE_PROFILES = [
   {
     'name': 'Nexus 4',
     'witness_file': '/sys/module/pm8921_charger/parameters/disabled',
     'enable_command': (
@@ skipping 387 matching lines @@
       after_measurements() # Anything that runs after power
                            # measurements are collected
 
     Args:
       timeout: timeout in seconds
       retries: number of retries
 
     Raises:
       device_errors.DeviceVersionError: If device is not L or higher.
     """
-    if (self._device.build_version_sdk < version_codes.LOLLIPOP):
+    if self._device.build_version_sdk < version_codes.LOLLIPOP:
       raise device_errors.DeviceVersionError('Device must be L or higher.')
     try:
       self.DisableBatteryUpdates(timeout=timeout, retries=retries)
       yield
     finally:
       self.EnableBatteryUpdates(timeout=timeout, retries=retries)
 
   def _DischargeDevice(self, percent, wait_period=120):
     """Disables charging and waits for device to discharge given amount
 
@@ skipping 138 matching lines @@
     charging so that it will collect power data since last charge.
 
     Returns:
       True if power data cleared.
       False if power data clearing is not supported (pre-L)
 
     Raises:
       device_errors.DeviceVersionError: If power clearing is supported,
         but fails.
     """
-    if (self._device.build_version_sdk < version_codes.LOLLIPOP):
+    if self._device.build_version_sdk < version_codes.LOLLIPOP:
       logging.warning('Dumpsys power data only available on 5.0 and above. '
                       'Cannot clear power data.')
       return False
 
     self._device.RunShellCommand(
         ['dumpsys', 'battery', 'set', 'usb', '1'], check_return=True)
     self._device.RunShellCommand(
         ['dumpsys', 'battery', 'set', 'ac', '1'], check_return=True)
     self._device.RunShellCommand(
         ['dumpsys', 'batterystats', '--reset'], check_return=True)
@@ skipping 28 matching lines @@
     self._cache['profile'] = {
         'name': None,
         'witness_file': None,
         'enable_command': None,
         'disable_command': None,
         'charge_counter': None,
         'voltage': None,
         'current': None,
     }
     return False