Treat win8 machines as win10 ports and remove baseline/specifier support.

Tools/Scripts/webkitpy/layout_tests/models/test_expectations.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 196 matching lines @@
             return
 
         # this is a test file, do a quick check if it's in the
         # full test suite.
         if expectation_line.path in self._all_tests:
             expectation_line.matching_tests.append(expectation_line.path)
 
     # FIXME: Update the original specifiers and remove this once the old syntax is gone.
     _configuration_tokens_list = [
         'Mac', 'SnowLeopard', 'Lion', 'MountainLion', 'Retina', 'Mavericks', 'Yosemite',
-        'Win', 'XP', 'Win7', 'Win8', 'Win10',
+        'Win', 'XP', 'Win7', 'Win10',
         'Linux', 'Linux32', 'Precise', 'Trusty',
         'Android',
         'Release',
         'Debug',
     ]
 
     _configuration_tokens = dict((token, token.upper()) for token in _configuration_tokens_list)
     _inverted_configuration_tokens = dict((value, name) for name, value in _configuration_tokens.iteritems())
 
     # FIXME: Update the original specifiers list and remove this once the old syntax is gone.
@@ skipping 910 matching lines @@
             # If reconstitute_only_these is an empty list, we want to return original_string.
             # So we need to compare reconstitute_only_these to None, not just check if it's falsey.
             if reconstitute_only_these is None or expectation_line in reconstitute_only_these:
                 return expectation_line.to_string(test_configuration_converter)
             return expectation_line.original_string
 
         def nones_out(expectation_line):
             return expectation_line is not None
 
         return "\n".join(filter(nones_out, map(serialize, expectation_lines)))