In the presubmit for auto-bisect, run pylint and unit tests.

tools/auto_bisect/source_control.py

 # Copyright 2014 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.
 
 """This module contains the SourceControl class and related functions."""
 
 import os
 import re
 
 from . import bisect_utils
@@ skipping 10 matching lines @@
     is unsupported.
   """
   (output, _) = bisect_utils.RunGit(['rev-parse', '--is-inside-work-tree'])
 
   if output.strip() == 'true':
     return GitSourceControl(opts)
 
   return None
 
 
+# TODO(qyearsley): Almost all of the methods below could be top-level functions
+# (or class methods). Refactoring may make this simpler.
+# pylint: disable=R0201
 class SourceControl(object):
   """SourceControl is an abstraction over the source control system."""
 
   def __init__(self):
     super(SourceControl, self).__init__()
 
   def SyncToRevisionWithGClient(self, revision):
     """Uses gclient to sync to the specified revision.
 
     This is like running gclient sync --revision <revision>.
@@ skipping 257 matching lines @@
         revision_end: End of revision range.
 
     Returns:
         Returns a list of commits that touched this file.
     """
     cmd = ['log', '--format=%H', '%s~1..%s' % (revision_start, revision_end),
            '--', filename]
     output = bisect_utils.CheckRunGit(cmd)
 
     return [o for o in output.split('\n') if o]