Makes mopy turn off gtest coloring

mojo/tools/apptest_runner.py

 #!/usr/bin/env python
 # 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.
 
 '''A test runner for gtest application tests.'''
 
 import argparse
 import json
 import logging
@@ skipping 15 matching lines @@
                       help='Print additional logging information.')
   parser.add_argument('--repeat-count', default=1, metavar='INT',
                       action='store', type=int,
                       help='The number of times to repeat the set of tests.')
   parser.add_argument('--write-full-results-to', metavar='FILENAME',
                       help='The path to write the JSON list of full results.')
   parser.add_argument('--test-list-file', metavar='FILENAME', type=file,
                       default=APPTESTS, help='The file listing tests to run.')
   args = parser.parse_args()
 
-  gtest.set_color()
   logger = logging.getLogger()
   logging.basicConfig(stream=sys.stdout, format='%(levelname)s:%(message)s')
   logger.setLevel(logging.DEBUG if args.verbose else logging.WARNING)
   logger.debug('Initialized logging: level=%s' % logger.level)
 
   logger.debug('Test list file: %s', args.test_list_file)
   config = Config(args.build_dir, is_verbose=args.verbose,
                   apk_name='MojoRunnerApptests.apk')
   execution_globals = {'config': config}
   exec args.test_list_file in execution_globals
@@ skipping 92 matching lines @@
     trie[path] = value
     return
   directory, rest = path.split('.', 1)
   if directory not in trie:
     trie[directory] = {}
   _AddPathToTrie(trie[directory], rest, value)
 
 
 if __name__ == '__main__':
   sys.exit(main())