Rename update-test-expectations -> update-flaky-expectations

third_party/WebKit/Tools/Scripts/update-flaky-expectations

 #!/usr/bin/python
 #
 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import sys
 
 from webkitpy.common import host
-from webkitpy.layout_tests import update_test_expectations
+from webkitpy.layout_tests import update_flaky_expectations
 from webkitpy.layout_tests.layout_package.bot_test_expectations import BotTestExpectationsFactory
 
 if __name__ == "__main__":
     _host = host.Host()
     return_code = update_test_expectations.main(_host,
                                                 BotTestExpectationsFactory(_host.builders),
                                                 sys.argv[1:])
     sys.exit(return_code)