Fix webkitpy unittests.

Tools/Scripts/webkitpy/layout_tests/run_webkit_tests.py

 # Copyright (C) 2010 Google Inc. All rights reserved.
 # Copyright (C) 2010 Gabor Rapcsanyi (rgabor@inf.u-szeged.hu), University of Szeged
 # Copyright (C) 2011 Apple Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
@@ skipping 201 matching lines @@
                                        "DumpRenderTree build is up-to-date."),
         optparse.make_option("-n", "--dry-run", action="store_true",
             default=False,
             help="Do everything but actually run the tests or upload results."),
         optparse.make_option("--wrapper",
             help="wrapper command to insert before invocations of "
                  "DumpRenderTree; option is split on whitespace before "
                  "running. (Example: --wrapper='valgrind --smc-check=all')"),
         optparse.make_option("-i", "--ignore-tests", action="append", default=[],
             help="directories or test to ignore (may specify multiple times)"),
-        optparse.make_option("--ignore-flaky-tests", action="store", default="default",
+        optparse.make_option("--ignore-flaky-tests", action="store",
             help=("Control whether tests that are flaky on the bots get ignored."
-                "'default' == Don't use the bot data."
                 "'very-flaky' == Ignore any tests that flaked more than once on the bot."
                 "'maybe-flaky' == Ignore any tests that flaked once on the bot.")),
         optparse.make_option("--test-list", action="append",
             help="read list of tests to run from file", metavar="FILE"),
         optparse.make_option("--skipped", action="store", default="default",
             help=("control how tests marked SKIP are run. "
                  "'default' == Skip tests unless explicitly listed on the command line, "
                  "'ignore' == Run them anyway, "
                  "'only' == only run the SKIP tests, "
                  "'always' == always skip, even if listed on the command line.")),
@@ skipping 145 matching lines @@
         printer.print_config(port.results_directory())
 
         run_details = manager.run(args)
         _log.debug("Testing completed, Exit status: %d" % run_details.exit_code)
         return run_details
     finally:
         printer.cleanup()
 
 if __name__ == '__main__':
     sys.exit(main(sys.argv[1:], sys.stdout, sys.stderr))