Refactoring and minor corrections:

tools/auto_bisect/bisect_utils.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.
 
 """Utility functions used by the bisect tool.
 
 This includes functions related to checking out the depot and outputting
 annotations for the Buildbot waterfall.
 """
 
@@ skipping 361 matching lines @@
   if opts.output_buildbot_annotations:
     OutputAnnotationStepStart(name)
 
   passed = False
 
   if not RunGClientAndCreateConfig(opts, custom_deps):
     passed_deps_check = True
     if os.path.isfile(os.path.join('src', FILE_DEPS_GIT)):
       cwd = os.getcwd()
       os.chdir('src')
-      passed_deps_check = True
       if passed_deps_check:
         passed_deps_check = RemoveThirdPartyDirectory('libjingle')
       if passed_deps_check:
         passed_deps_check = RemoveThirdPartyDirectory('skia')
       os.chdir(cwd)
 
     if passed_deps_check:
       _CleanupPreviousGitRuns()
 
       RunGClient(['revert'])
@@ skipping 181 matching lines @@
   return sys.platform.startswith('linux')
 
 
 def IsMacHost():
   """Checks whether or not the script is running on Mac.
 
   Returns:
     True if running on Mac.
   """
   return sys.platform.startswith('darwin')