Remove XP port from Blink LayoutTest related scripts.

third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/models/test_configuration.py

 # Copyright (C) 2011 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 240 matching lines @@
                 return False
             for combination in self.combinations(specifiers_list, size):
                 if self.symmetric_difference(combination) in collapsing_sets:
                     for item in combination:
                         specifiers_list.remove(item)
                     specifiers_list.append(frozenset(self.intersect_combination(combination)))
                     return True
             return False
 
         # 2) Collapse specifier sets with common specifiers:
-        #   (xp, release), (xp, debug) --> (xp, x86)
+        #   (win7, release), (win7, debug) --> (win7, x86)
         for size, collapsing_sets in self._collapsing_sets_by_size.items():
             while try_collapsing(size, collapsing_sets):
                 pass
 
         def try_abbreviating(collapsing_sets):
             if len(specifiers_list) < 2:
                 return False
             for combination in self.combinations(specifiers_list, 2):
                 for collapsing_set in collapsing_sets:
                     diff = self.symmetric_difference(combination)
                     if diff <= collapsing_set:
                         common = self.intersect_combination(combination)
                         for item in combination:
                             specifiers_list.remove(item)
                         specifiers_list.append(frozenset(common | diff))
                         return True
             return False
 
         # 3) Abbreviate specifier sets by combining specifiers across categories.
-        #   (xp, release), (win7, release) --> (xp, win7, release)
+        #   (win7, release), (win10, release) --> (win7, win10, release)
         while try_abbreviating(self._collapsing_sets_by_size.values()):
             pass
 
 
         # 4) Substitute specifier subsets that match macros witin each set:
-        #   (xp, win7, release) -> (win, release)
+        #   (win7, win10, release) -> (win, release)
         self.collapse_macros(self._configuration_macros, specifiers_list)
 
         macro_keys = set(self._configuration_macros.keys())
 
         # 5) Collapsing macros may have created combinations the can now be abbreviated.
-        #   (xp, release), (linux, x86, release), (linux, x86_64, release) --> (xp, release), (linux, release) --> (xp, linux, release)
+        #   (win7, release), (linux, x86, release), (linux, x86_64, release) --> (win7, release), (linux, release) --> (win7, linux, release)
         while try_abbreviating([self._collapsing_sets_by_category['version'] | macro_keys]):
             pass
 
         # 6) Remove cases where we have collapsed but have all macros.
         #   (android, win, mac, linux, release) --> (release)
         specifiers_to_remove = []
         for specifier_set in specifiers_list:
             if macro_keys <= specifier_set:
                 specifiers_to_remove.append(specifier_set)
 
         for specifier_set in specifiers_to_remove:
             specifiers_list.remove(specifier_set)
             specifiers_list.append(frozenset(specifier_set - macro_keys))
 
         return specifiers_list