Improve error messages from checkperms PRESUBMIT check

tools/checkperms/checkperms.py

 #!/usr/bin/env python
 # 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.
 
 """Makes sure files have the right permissions.
 
 Some developers have broken SCM configurations that flip the executable
 permission on for no good reason. Unix developers who run ls --color will then
 see .cc files in green and get confused.
@@ skipping 425 matching lines @@
   levels = [logging.ERROR, logging.INFO, logging.DEBUG]
   logging.basicConfig(level=levels[min(len(levels) - 1, options.verbose)])
 
   if len(args) > 1:
     parser.error('Too many arguments used')
 
   if options.root:
     options.root = os.path.abspath(options.root)
 
   if options.files:
-    # --file implies --bare (for PRESUBMIT.py).
-    options.bare = True
-
     errors = check_files(options.root, options.files)
   else:
     api = get_scm(options.root, options.bare)
     start_dir = args[0] if args else api.root_dir
     errors = api.check(start_dir)
 
     if not options.bare:
       print('Processed %s files, %d files where tested for shebang/ELF '
             'header' % (api.count, api.count_read_header))
 
   if options.json:
     with open(options.json, 'w') as f:
       json.dump(errors, f)
 
   if errors:
     if options.bare:
       print '\n'.join(e['full_path'] for e in errors)
     else:
       print '\nFAILED\n'
       print '\n'.join('%s: %s' % (e['full_path'], e['error']) for e in errors)
     return 1
   if not options.bare:
     print '\nSUCCESS\n'
   return 0
 
 
 if '__main__' == __name__:
   sys.exit(main())