Add --sanitizer-mode to run-webkit-tests

Tools/Scripts/webkitpy/layout_tests/run_webkit_tests_integrationtest.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 248 matching lines @@
                 tests_included=True, shared_port=False)
             self.assertTrue(any(['Running 1 ' in line for line in regular_output.buflist]))
 
     def test_dryrun(self):
         tests_run = get_tests_run(['--dry-run'])
         self.assertEqual(tests_run, [])
 
         tests_run = get_tests_run(['-n'])
         self.assertEqual(tests_run, [])
 
+    def test_enable_sanitizer(self):
+        self.assertTrue(passing_run(['--enable-sanitizer', 'failures/expected/text.html']))
+
     def test_exception_raised(self):
         # Exceptions raised by a worker are treated differently depending on
         # whether they are in-process or out. inline exceptions work as normal,
         # which allows us to get the full stack trace and traceback from the
         # worker. The downside to this is that it could be any error, but this
         # is actually useful in testing.
         #
         # Exceptions raised in a separate process are re-packaged into
         # WorkerExceptions (a subclass of BaseException), which have a string capture of the stack which can
         # be printed, but don't display properly in the unit test exception handlers.
@@ skipping 764 matching lines @@
         stderr = StringIO.StringIO()
         res = run_webkit_tests.main(['--platform', 'test', '--exit-after-n-failures', '1',
                                      'failures/unexpected/missing_text.html',
                                      'failures/unexpected/missing_image.html'],
                                     stdout, stderr)
         self.assertEqual(res, test_run_results.EARLY_EXIT_STATUS)
         self.assertEqual(stdout.getvalue(),
                 ('\n'
                  'Regressions: Unexpected missing results (1)\n'
                  '  failures/unexpected/missing_image.html [ Missing ]\n\n'))