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

Tools/Scripts/webkitpy/layout_tests/servers/apache_http_server_unittest.py

 # Copyright (C) 2012 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 33 matching lines @@
         if sys.platform in ('cygwin', 'win32'):
             return
 
         def fake_pid(_):
             host.filesystem.write_text_file('/tmp/WebKit/httpd.pid', '42')
             return True
 
         host = MockHost()
         host.executive = MockExecutive(should_log=True)
         test_port = test.TestPort(host)
-        host.filesystem.write_text_file(test_port._path_to_apache_config_file(), '')
+        host.filesystem.write_text_file(test_port.path_to_apache_config_file(), '')
 
         server = LayoutTestApacheHttpd(test_port, "/mock/output_dir", number_of_servers=4)
         server._check_that_all_ports_are_available = lambda: True
         server._is_server_running_on_all_ports = lambda: True
         server._wait_for_action = fake_pid
         oc = OutputCapture()
         try:
             oc.capture_output()
             server.start()
             server.stop()
         finally:
             _, _, logs = oc.restore_output()
         self.assertIn("StartServers 4", logs)
         self.assertIn("MinSpareServers 4", logs)
         self.assertIn("MaxSpareServers 4", logs)
-        self.assertTrue(host.filesystem.exists("/mock/output_dir/httpd.conf"))