Don't access Port._filesystem directly (use Port.host.filesystem instead).

third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/controllers/manager.py

 # Copyright (C) 2010 Google Inc. All rights reserved.
 # Copyright (C) 2010 Gabor Rapcsanyi (rgabor@inf.u-szeged.hu), University of Szeged
 #
 # 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
@@ skipping 428 matching lines @@
             for failure in result.failures:
                 if not isinstance(failure, test_failures.FailureCrash):
                     continue
                 if failure.has_log:
                     continue
                 crashed_processes.append([test, failure.process_name, failure.pid])
 
         sample_files = self._port.look_for_new_samples(crashed_processes, start_time)
         if sample_files:
             for test, sample_file in sample_files.iteritems():
-                writer = TestResultWriter(self._port._filesystem, self._port, self._port.results_directory(), test)
+                writer = TestResultWriter(self._filesystem, self._port, self._port.results_directory(), test)
                 writer.copy_sample_file(sample_file)
 
         crash_logs = self._port.look_for_new_crash_logs(crashed_processes, start_time)
         if crash_logs:
             for test, crash_log in crash_logs.iteritems():
-                writer = TestResultWriter(self._port._filesystem, self._port, self._port.results_directory(), test)
+                writer = TestResultWriter(self._filesystem, self._port, self._port.results_directory(), test)
                 writer.write_crash_log(crash_log)
 
     def _clobber_old_results(self):
         dir_above_results_path = self._filesystem.dirname(self._results_directory)
         self._printer.write_update("Clobbering old results in %s" % dir_above_results_path)
         if not self._filesystem.exists(dir_above_results_path):
             return
         file_list = self._filesystem.listdir(dir_above_results_path)
         results_directories = []
         for dir in file_list:
@@ skipping 89 matching lines @@
 
         stats = {}
         for result in initial_results.results_by_name.values():
             if result.type != test_expectations.SKIP:
                 stats[result.test_name] = {'results': (_worker_number(result.worker_name), result.test_number, result.pid, int(
                     result.test_run_time * 1000), int(result.total_run_time * 1000))}
         stats_trie = {}
         for name, value in stats.iteritems():
             json_results_generator.add_path_to_trie(name, value, stats_trie)
         return stats_trie