Introduce WPTServe for running W3C Blink Layout tests

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 166 matching lines @@
         optparse.make_option("--batch-size",
             help=("Run a the tests in batches (n), after every n tests, "
                   "the driver is relaunched."), type="int", default=None),
         optparse.make_option("--build", dest="build",
             action="store_true", default=True,
             help="Check to ensure the build is up-to-date (default)."),
         optparse.make_option("--no-build", dest="build",
             action="store_false", help="Don't check to see if the build is up-to-date."),
         optparse.make_option("--child-processes",
             help="Number of drivers to run in parallel."),
+        optparse.make_option("--enable-wptserve", dest="enable_wptserve", action="store_true", default=False,
+            help="Enable running web-plaform-tests using WPTserve instead of Apache."),
         optparse.make_option("--disable-breakpad", action="store_true",
             help="Don't use breakpad to symbolize unexpected crashes."),
         optparse.make_option("--driver-logging", action="store_true",
             help="Print detailed logging of the driver/content_shell"),
         optparse.make_option("--enable-leak-detection", action="store_true",
             help="Enable the leak detection of DOM objects."),
         optparse.make_option("--enable-sanitizer", action="store_true",
             help="Only alert on sanitizer-related errors and crashes"),
         optparse.make_option("--exit-after-n-crashes-or-timeouts", type="int",
             default=None, help="Exit after the first N crashes instead of "
@@ skipping 172 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))