Enable slimming paint by default (for trybots only)

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 29 matching lines @@
 from webkitpy.layout_tests.port import configuration_options, platform_options
 from webkitpy.layout_tests.views import buildbot_results
 from webkitpy.layout_tests.views import printing
 from webkitpy.layout_tests.generate_results_dashboard import DashBoardGenerator
 
 _log = logging.getLogger(__name__)
 
 
 
 def main(argv, stdout, stderr):
+    argv += [
+        '--exit-after-n-crashes-or-timeouts=1000',
+        '--additional-driver-flag=--enable-slimming-paint',
+    ]
+
     options, args = parse_args(argv)
 
     if options.platform and 'test' in options.platform and not 'browser_test' in options.platform:
         # It's a bit lame to import mocks into real code, but this allows the user
         # to run tests against the test platform interactively, which is useful for
         # debugging test failures.
         from webkitpy.common.host_mock import MockHost
         host = MockHost()
     else:
         host = Host()
 
     try:
         port = host.port_factory.get(options.platform, options)
+        # Search for virtual/slimmingpaint test expectations at first.
+        for baseline_path in port.default_baseline_search_path() + [port.layout_tests_dir()]:
+            options.additional_platform_directory.append(host.filesystem.join(baseline_path, 'virtual', 'slimmingpaint'))
+        _log.info('Baseline search path: ' + str(port.baseline_search_path()))
+
+        options.additional_expectations.append(host.filesystem.join(port.layout_tests_dir(), 'SlimmingPaintExpectations'))
     except NotImplementedError, e:
         # FIXME: is this the best way to handle unsupported port names?
         print >> stderr, str(e)
         return test_run_results.UNEXPECTED_ERROR_EXIT_STATUS
 
     try:
         run_details = run(port, options, args, stderr)
         if ((run_details.exit_code not in test_run_results.ERROR_CODES or
              run_details.exit_code == test_run_results.EARLY_EXIT_STATUS) and
             not run_details.initial_results.keyboard_interrupted):
@@ skipping 296 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))