[chrome_remote_control] Add pylint to PRESUMMIT and fix lint

tools/chrome_remote_control/chrome_remote_control/android_browser_finder.py

 # Copyright (c) 2012 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.
+"""Finds android browsers that can be controlled by chrome_remote_control."""
+
 import os as real_os
 import subprocess as real_subprocess
 import logging
 import re
 
 from chrome_remote_control import android_browser_backend
 import chrome_remote_control.adb_commands as real_adb_commands
 from chrome_remote_control import browser
 from chrome_remote_control import possible_browser
 
-
-"""Finds android browsers that can be controlled by chrome_remote_control."""
-
 ALL_BROWSER_TYPES = ','.join([
     'android-content-shell',
     'android-chrome',
     'android-jb-system-chrome',
     ])
 
 CHROME_PACKAGE = 'com.google.android.apps.chrome'
 CHROME_ACTIVITY = '.Main'
 CHROME_COMMAND_LINE = '/data/local/chrome-command-line'
 CHROME_DEVTOOLS_REMOTE_PORT = 'localabstract:chrome_devtools_remote'
@@ skipping 114 matching lines @@
     logging.warn('chrome_remote_control detected an android device. However,')
     logging.warn('Chrome\'s port-forwarder app is not installed on the device.')
     logging.warn('To build:')
     logging.warn('  make -j16 out/$BUILDTYPE/forwarder')
     logging.warn('And then install it:')
     logging.warn('  %s', adb_commands.HowToInstallForwarder())
     logging.warn('')
     logging.warn('')
     return []
   return possible_browsers