Add slow test decorator

tools/chrome_proxy/webdriver/common.py

 # Copyright 2016 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.
 
 import argparse
 import json
 import logging
 import os
 import re
 import socket
@@ skipping 54 matching lines @@
   parser.add_argument('--test_filter', '--gtest_filter', type=TestFilter,
     help='The filter to use when discovering tests to run, in the form '
     '<class name>.<method name> Wildcards (*) are accepted. Default=*',
     default='*')
   parser.add_argument('--logging_level', choices=['DEBUG', 'INFO', 'WARN',
     'ERROR', 'CRIT'], default='WARN', help='The logging verbosity for log '
     'messages, printed to stderr. To see stderr logging output during a '
     'successful test run, also pass --disable_buffer. Default=ERROR')
   parser.add_argument('--log_file', help='If given, write logging statements '
     'to the given file instead of stderr.')
+  parser.add_argument('--skip_slow', action='store_true', help='If set, tests '
+    'marked as slow will be skipped.', default=False)
   return parser.parse_args(sys.argv[1:])
 
 def GetLogger(name='common'):
   """Creates a Logger instance with the given name and returns it.
 
   If a logger has already been created with the same name, that instance is
   returned instead.
 
   Args:
     name: The name of the logger to return.
@@ skipping 582 matching lines @@
     for test_suite in test_suite_iter:
       for test_case in test_suite:
         for test in test_case:
           # Drop the file name in the form <filename>.<classname>.<methodname>
           test_id = test.id()[test.id().find('.') + 1:]
           if re.match(test_filter_re, test_id):
             tests.addTest(test)
     testRunner = unittest.runner.TextTestRunner(verbosity=2,
       failfast=flags.failfast, buffer=(not flags.disable_buffer))
     testRunner.run(tests)