Make http LayoutTests work in Debian with Apache 2.4.

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 379 matching lines @@
 
         self._assert_config_file_for_platform(port, 'linux2', 'apache2-httpd.conf')
         self._assert_config_file_for_platform(port, 'linux3', 'apache2-httpd.conf')
 
         port._is_redhat_based = lambda: True
         port._apache_version = lambda: '2.2'
         self._assert_config_file_for_platform(port, 'linux2', 'fedora-httpd-2.2.conf')
 
         port = TestWebKitPort()
         port._is_debian_based = lambda: True
-        self._assert_config_file_for_platform(port, 'linux2', 'apache2-debian-httpd.conf')
+        port._apache_version = lambda: '2.2'
+        self._assert_config_file_for_platform(port, 'linux2', 'debian-httpd-2.2.conf')
 
         self._assert_config_file_for_platform(port, 'mac', 'apache2-httpd.conf')
         self._assert_config_file_for_platform(port, 'win32', 'apache2-httpd.conf')  # win32 isn't a supported sys.platform.  AppleWin/WinCairo/WinCE ports all use cygwin.
         self._assert_config_file_for_platform(port, 'barf', 'apache2-httpd.conf')
 
     def test_path_to_apache_config_file(self):
         port = TestWebKitPort()
 
         saved_environ = os.environ.copy()
         try:
@@ skipping 13 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')