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

build/android/pylib/perf/setup.py

 # Copyright 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.
 
 """Generates test runner factory and tests for performance tests."""
 
 import json
 import fnmatch
 import logging
 import os
 import shutil
 
 from devil.android import device_list
 from devil.android import device_utils
 from pylib import constants
-from pylib import forwarder
 from pylib.perf import test_runner
 from pylib.utils import test_environment
 
 
 def _GetAllDevices(active_devices):
   devices_path = os.path.join(os.environ.get('CHROMIUM_OUT_DIR', 'out'),
                               device_list.LAST_DEVICES_FILENAME)
   try:
     devices = [device_utils.DeviceUtils(s)
                for s in device_list.GetPersistentDeviceList(devices_path)]
@@ skipping 61 matching lines @@
   if test_options.flaky_steps:
     with file(test_options.flaky_steps, 'r') as f:
       flaky_steps = json.load(f)
 
   def TestRunnerFactory(device, shard_index):
     return test_runner.TestRunner(
         test_options, device, shard_index, len(all_devices),
         steps_dict, flaky_steps)
 
   return (TestRunnerFactory, sorted_step_names, all_devices)