Fix style in tools/auto_bisect.

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 functions for performing source control operations."""
 
 import bisect_utils
 
 
 def IsInGitRepository():
@@ skipping 119 matching lines @@
   This function executes "git footer --position-num <git hash>" command to get
   commit position the given revision.
 
   Args:
     git_revision: The git SHA1 to use.
     cwd: Working directory to run the command from.
 
   Returns:
     Git commit position as integer or None.
   """
-  # Some of the respositories are pure git based, unlike other repositories
+  # Some of the repositories are pure git based, unlike other repositories
   # they doesn't have commit position. e.g., skia, angle.
   cmd = ['footers', '--position-num', git_revision]
-  output, return_code  = bisect_utils.RunGit(cmd, cwd)
+  output, return_code = bisect_utils.RunGit(cmd, cwd)
   if not return_code:
     commit_position = output.strip()
     if bisect_utils.IsStringInt(commit_position):
       return int(commit_position)
   return None
 
 
 def GetCommitTime(git_revision, cwd=None):
   """Returns commit time for the given revision in UNIX timestamp."""
   cmd = ['log', '--format=%ct', '-1', git_revision]
@@ skipping 69 matching lines @@
   cmd = [
       'log',
       '--format=%H',
       '%s~1..%s' % (revision_start, revision_end),
       '--',
       filename,
   ]
   output = bisect_utils.CheckRunGit(cmd)
   lines = output.split('\n')
   return [o for o in lines if o]
-