In Port.setup_environ_for_server, don't copy apparently unused env vars.

third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/port/base.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 1051 matching lines @@
 
     def clean_up_test_run(self):
         """Perform port-specific work at the end of a test run."""
         if self._image_differ:
             self._image_differ.stop()
             self._image_differ = None
 
     def setup_environ_for_server(self):
         # We intentionally copy only a subset of the environment when
         # launching subprocesses to ensure consistent test results.
-        clean_env = {
-            'LOCAL_RESOURCE_ROOT': self.layout_tests_dir(),  # FIXME: Is this used?
-        }
+        clean_env = {}
         variables_to_copy = [
-            'WEBKIT_TESTFONTS',  # FIXME: Is this still used?
-            'WEBKITOUTPUTDIR',   # FIXME: Is this still used?
             'CHROME_DEVEL_SANDBOX',
             'CHROME_IPC_LOGGING',
             'ASAN_OPTIONS',
             'TSAN_OPTIONS',
             'MSAN_OPTIONS',
             'LSAN_OPTIONS',
             'UBSAN_OPTIONS',
             'VALGRIND_LIB',
             'VALGRIND_LIB_INNER',
         ]
@@ skipping 730 matching lines @@
 
     def __init__(self, base, args, reference_args=None):
         self.name = base
         self.base = base
         self.args = args
         self.reference_args = args if reference_args is None else reference_args
         self.tests = set()
 
     def __repr__(self):
         return "PhysicalTestSuite('%s', '%s', %s, %s)" % (self.name, self.base, self.args, self.reference_args)