Enable presubmit pylint in 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 psutil
-import signal
 import shutil
-import time
 
 from pylib import constants
 from pylib import forwarder
+from pylib.perf import test_runner
 from pylib.utils import test_environment
 
-import test_runner
-
 
 def Setup(test_options):
   """Create and return the test runner factory and tests.
 
   Args:
     test_options: A PerformanceOptions object.
 
   Returns:
     A tuple of (TestRunnerFactory, tests).
   """
@@ skipping 25 matching lines @@
     sorted_test_names = fnmatch.filter(sorted_test_names,
                                        test_options.test_filter)
     tests_dict = dict((k, v) for k, v in tests_dict.iteritems()
                       if k in sorted_test_names)
 
   flaky_steps = []
   if test_options.flaky_steps:
     with file(test_options.flaky_steps, 'r') as f:
       flaky_steps = json.load(f)
 
-  def TestRunnerFactory(device, shard_index):
+  def TestRunnerFactory(device, _shard_index):
     return test_runner.TestRunner(
         test_options, device, tests_dict, flaky_steps)
 
   return (TestRunnerFactory, sorted_test_names)