Enable presubmit pylint in build/android.

build/android/avd.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.
 
 """Launches Android Virtual Devices with a set configuration for testing Chrome.
 
 The script will launch a specified number of Android Virtual Devices (AVD's).
 """
 
 
 import install_emulator_deps
 import logging
 import optparse
 import os
-import subprocess
 import sys
 
 from pylib import constants
 from pylib.utils import emulator
 
 
 def main(argv):
   # ANDROID_SDK_ROOT needs to be set to the location of the SDK used to launch
   # the emulator to find the system images upon launch.
   emulator_sdk = os.path.join(constants.EMULATOR_SDK_ROOT, 'sdk')
@@ skipping 11 matching lines @@
 
   options, _ = opt_parser.parse_args(argv[1:])
 
   logging.basicConfig(level=logging.INFO,
                       format='# %(asctime)-15s: %(message)s')
   logging.root.setLevel(logging.INFO)
 
   # Check if KVM is enabled for x86 AVD's and check for x86 system images.
   # TODO(andrewhayden) Since we can fix all of these with install_emulator_deps
   # why don't we just run it?
-  if options.abi =='x86':
+  if options.abi == 'x86':
     if not install_emulator_deps.CheckKVM():
       logging.critical('ERROR: KVM must be enabled in BIOS, and installed. '
                        'Enable KVM in BIOS and run install_emulator_deps.py')
       return 1
     elif not install_emulator_deps.CheckX86Image(options.api_level):
       logging.critical('ERROR: System image for x86 AVD not installed. Run '
                        'install_emulator_deps.py')
       return 1
 
   if not install_emulator_deps.CheckSDK():
     logging.critical('ERROR: Emulator SDK not installed. Run '
                      'install_emulator_deps.py.')
     return 1
 
   if not install_emulator_deps.CheckSDKPlatform(options.api_level):
     logging.critical('ERROR: Emulator SDK missing required target for API %d. '
                      'Run install_emulator_deps.py.')
     return 1
 
   emulator.LaunchEmulators(options.emulator_count, options.abi,
                            options.api_level, True)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))