Change logging statements to not use the "%" operator.

third_party/WebKit/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 109 matching lines @@
         expectation_line.expectations = expectations
         return expectation_line
 
     def expectation_line_for_test(self, test_name, expectations):
         expectation_line = self._create_expectation_line(test_name, expectations, '<Bot TestExpectations>')
         self._parse_line(expectation_line)
         return expectation_line
 
     def expectation_for_skipped_test(self, test_name):
         if not self._port.test_exists(test_name):
-            _log.warning('The following test %s from the Skipped list doesn\'t exist' % test_name)
+            _log.warning('The following test %s from the Skipped list doesn\'t exist', test_name)
         expectation_line = self._create_expectation_line(test_name, [TestExpectationParser.PASS_EXPECTATION], '<Skipped file>')
         expectation_line.expectations = [TestExpectationParser.SKIP_MODIFIER, TestExpectationParser.WONTFIX_MODIFIER]
         expectation_line.is_skipped_outside_expectations_file = True
         self._parse_line(expectation_line)
         return expectation_line
 
     def _parse_line(self, expectation_line):
         if not expectation_line.name:
             return
 
@@ skipping 1048 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)))