fix virtual_test_suites() for browser_test ports

Tools/Scripts/webkitpy/layout_tests/port/win_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 21 matching lines @@
 from webkitpy.common.system import outputcapture
 from webkitpy.common.system.executive_mock import MockExecutive
 from webkitpy.common.system.filesystem_mock import MockFileSystem
 from webkitpy.layout_tests.port import port_testcase
 from webkitpy.layout_tests.port import win
 from webkitpy.tool.mocktool import MockOptions
 
 
 class WinPortTest(port_testcase.PortTestCase):
     port_name = 'win'
+    full_port_name = 'win-xp'
     port_maker = win.WinPort
     os_name = 'win'
     os_version = 'xp'
 
     def test_setup_environ_for_server(self):
         port = self.make_port()
         port._executive = MockExecutive(should_log=True)
         output = outputcapture.OutputCapture()
         # FIXME: This test should not use the real os.environ
         orig_environ = os.environ.copy()
@@ skipping 69 matching lines @@
 
     def test_operating_system(self):
         self.assertEqual('win', self.make_port().operating_system())
 
     def test_driver_name_option(self):
         self.assertTrue(self.make_port()._path_to_driver().endswith('content_shell.exe'))
         self.assertTrue(self.make_port(options=MockOptions(driver_name='OtherDriver'))._path_to_driver().endswith('OtherDriver.exe'))
 
     def test_path_to_image_diff(self):
         self.assertEqual(self.make_port()._path_to_image_diff(), '/mock-checkout/out/Release/image_diff.exe')