Reland of wptserve: Enable WPTServe by default.

third_party/WebKit/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 247 matching lines @@
                 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."),
+            # TODO(tkent): Remove --enable-wptserve.
             optparse.make_option(
                 "--enable-wptserve",
                 dest="enable_wptserve",
                 action="store_true",
-                default=False,
+                default=True,
                 help="Enable running web-platform-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(
@@ skipping 304 matching lines @@
             _log.debug("\t%s", process)
 
         return run_details
 
     finally:
         printer.cleanup()
 
 if __name__ == '__main__':
     exit_code = main(sys.argv[1:], sys.stdout, sys.stderr)
     sys.exit(exit_code)