[chrome_remote_control] Add pylint to PRESUMMIT and fix lint

tools/chrome_remote_control/chrome_remote_control/cros_interface_unittest.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.
 
 # TODO(nduca): Rewrite what some of these tests to use mocks instead of
 # actually talking to the device. This would improve our coverage quite
 # a bit.
 import unittest
 
-import browser_options
-import cros_interface
-import run_tests
+from chrome_remote_control import browser_options
+from chrome_remote_control import cros_interface
+from chrome_remote_control import run_tests
 
 class CrOSInterfaceTest(unittest.TestCase):
   @run_tests.RequiresBrowserOfType('cros-chrome')
   def testDeviceSideProcessFailureToLaunch(self):
     remote = browser_options.options_for_unittests.cros_remote
     cri = cros_interface.CrOSInterface(remote)
 
     def WillFail():
       dsp = cros_interface.DeviceSideProcess(
         cri,
@@ skipping 29 matching lines @@
 
   @run_tests.RequiresBrowserOfType('cros-chrome')
   def testExists(self):
     remote = browser_options.options_for_unittests.cros_remote
     cri = cros_interface.CrOSInterface(remote)
     self.assertTrue(cri.FileExistsOnDevice('/proc/cpuinfo'))
     self.assertTrue(cri.FileExistsOnDevice('/etc/passwd'))
     self.assertFalse(cri.FileExistsOnDevice('/etc/sdlfsdjflskfjsflj'))
 
   @run_tests.RequiresBrowserOfType('cros-chrome')
-  def testGetFileContents(self):
+  def testGetFileContents(self): # pylint: disable=R0201
     remote = browser_options.options_for_unittests.cros_remote
     cri = cros_interface.CrOSInterface(remote)
     hosts = cri.GetFileContents('/etc/hosts')
     assert hosts.startswith('# /etc/hosts')
 
   @run_tests.RequiresBrowserOfType('cros-chrome')
   def testGetFileContentsForSomethingThatDoesntExist(self):
     remote = browser_options.options_for_unittests.cros_remote
     cri = cros_interface.CrOSInterface(remote)
     self.assertRaises(
       OSError,
       lambda: cri.GetFileContents('/tmp/209fuslfskjf/dfsfsf'))
 
   @run_tests.RequiresBrowserOfType('cros-chrome')
-  def testListProcesses(self):
+  def testListProcesses(self): # pylint: disable=R0201
     remote = browser_options.options_for_unittests.cros_remote
     cri = cros_interface.CrOSInterface(remote)
 
     with cros_interface.DeviceSideProcess(
         cri,
-        ['sleep', '11']) as sleep:
+        ['sleep', '11']):
       procs = cri.ListProcesses()
       sleeps = [x for x in procs
                 if x[1] == 'sleep 11']
 
       assert len(sleeps) == 1
 
   @run_tests.RequiresBrowserOfType('cros-chrome')
   def testIsServiceRunning(self):
     remote = browser_options.options_for_unittests.cros_remote
     cri = cros_interface.CrOSInterface(remote)
 
     self.assertTrue(cri.IsServiceRunning('openssh-server'))