Fix webkitpy unittests.

Tools/Scripts/webkitpy/layout_tests/port/port_testcase.py

 # Copyright (C) 2010 Google 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.
 #    * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 457 matching lines @@
         port = TestWebKitPort(port_name="testwebkitport-version")
         self.assertEqual(platform_dirs(port), ['LayoutTests', 'testwebkitport', 'testwebkitport-version'])
 
         port = TestWebKitPort(port_name="testwebkitport-version",
                               options=MockOptions(additional_platform_directory=["internal-testwebkitport"]))
         self.assertEqual(platform_dirs(port), ['LayoutTests', 'testwebkitport', 'testwebkitport-version', 'internal-testwebkitport'])
 
     def test_root_option(self):
         port = TestWebKitPort()
         port._options = MockOptions(root='/foo')
-        self.assertEqual(port._path_to_driver(), "/foo/DumpRenderTree")
+        self.assertEqual(port._path_to_driver(), "/foo/content_shell")
 
     def test_test_expectations(self):
         # Check that we read the expectations file
         host = MockSystemHost()
         host.filesystem.write_text_file('/mock-checkout/LayoutTests/platform/testwebkitport/TestExpectations',
             'BUG_TESTEXPECTATIONS SKIP : fast/html/article-element.html = FAIL\n')
         port = TestWebKitPort(host=host)
         self.assertEqual(''.join(port.expectations_dict().values()), 'BUG_TESTEXPECTATIONS SKIP : fast/html/article-element.html = FAIL\n')
 
     def _assert_config_file_for_platform(self, port, platform, config_file):
@@ skipping 52 matching lines @@
         saved_environ = os.environ.copy()
         try:
             os.environ['WEBKIT_HTTP_SERVER_CONF_PATH'] = '/existing/httpd.conf'
             self.assertEqual(port._path_to_apache_config_file(), '/existing/httpd.conf')
         finally:
             os.environ = saved_environ.copy()
 
     def test_additional_platform_directory(self):
         port = self.make_port(options=MockOptions(additional_platform_directory=['/tmp/foo']))
         self.assertEqual(port.baseline_search_path()[0], '/tmp/foo')