Rename various methods in webkitpy.layout_test.Port to be public

Tools/Scripts/webkitpy/layout_tests/port/base_unittest.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 314 matching lines @@
     def test_http_server_supports_ipv6(self):
         port = self.make_port()
         self.assertTrue(port.http_server_supports_ipv6())
         port.host.platform.os_name = 'cygwin'
         self.assertFalse(port.http_server_supports_ipv6())
         port.host.platform.os_name = 'win'
         self.assertTrue(port.http_server_supports_ipv6())
 
     def test_check_httpd_success(self):
         port = self.make_port(executive=MockExecutive2())
-        port._path_to_apache = lambda: '/usr/sbin/httpd'
+        port.path_to_apache = lambda: '/usr/sbin/httpd'
         capture = OutputCapture()
         capture.capture_output()
         self.assertTrue(port.check_httpd())
         _, _, logs = capture.restore_output()
         self.assertEqual('', logs)
 
     def test_httpd_returns_error_code(self):
         port = self.make_port(executive=MockExecutive2(exit_code=1))
-        port._path_to_apache = lambda: '/usr/sbin/httpd'
+        port.path_to_apache = lambda: '/usr/sbin/httpd'
         capture = OutputCapture()
         capture.capture_output()
         self.assertFalse(port.check_httpd())
         _, _, logs = capture.restore_output()
         self.assertEqual('httpd seems broken. Cannot run http tests.\n', logs)
 
     def test_test_exists(self):
         port = self.make_port(with_tests=True)
         self.assertTrue(port.test_exists('passes'))
         self.assertTrue(port.test_exists('passes/text.html'))
@@ skipping 106 matching lines @@
         suite = VirtualTestSuite('suite/bar', 'base/foo', ['--args'])
         self.assertFalse(hasattr(suite, 'name'))
         self.assertFalse(hasattr(suite, 'base'))
         self.assertFalse(hasattr(suite, 'args'))
 
     def test_legacy(self):
         suite = VirtualTestSuite('suite/bar', 'base/foo', ['--args'], use_legacy_naming=True)
         self.assertEqual(suite.name, 'virtual/suite/bar')
         self.assertEqual(suite.base, 'base/foo')
         self.assertEqual(suite.args, ['--args'])