Use underscores to separate words in filenames in webkitpy.

third_party/WebKit/Tools/Scripts/webkitpy/common/system/log_testing.py

 # Copyright (C) 2010 Chris Jerdonek (cjerdonek@webkit.org)
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
 # are met:
 # 1.  Redistributions of source code must retain the above copyright
 #     notice, this list of conditions and the following disclaimer.
 # 2.  Redistributions in binary form must reproduce the above copyright
 #     notice, this list of conditions and the following disclaimer in the
 #     documentation and/or other materials provided with the distribution.
@@ skipping 15 matching lines @@
 logging module.
 
 Inherit from the LoggingTestCase class for basic testing needs.  For
 more advanced needs (e.g. unit-testing methods that configure logging),
 see the TestLogStream class, and perhaps also the LogTesting class.
 """
 
 import logging
 import unittest
 
+# pylint: disable=invalid-name
+# Camel-case names are used here to match the style of the TestCase methods.
+
 
 class TestLogStream(object):
     """Represents a file-like object for unit-testing logging.
 
     This is meant for passing to the logging.StreamHandler constructor.
     Log messages captured by instances of this object can be tested
     using self.assertMessages() below.
     """
 
     def __init__(self, test_case):
@@ skipping 175 matching lines @@
         return self._log.messages()
 
     # FIXME: Add a clearMessages() method for cases where the caller
     #        deliberately doesn't want to assert every message.
 
     # See the docstring for LogTesting.assertMessages() for an explanation
     # of why we clear the array of messages after asserting its contents.
     def assertLog(self, messages):
         """Asserts the current array of log messages, and clear its contents."""
         self._log.assertMessages(messages)