Rename update_w3c_test_expectations and related files.

third_party/WebKit/Tools/Scripts/webkitpy/w3c/wpt_expectations_updater.py

 # 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.
 
-"""A class for updating layout test expectations when updating w3c tests.
+"""Updates layout test expectations and baselines when updating w3c tests.
 
-Specifically, this class fetches results from try bots for the current CL, and:
-  1. Downloads new baseline files for any tests that can be rebaselined.
-  2. Updates the generic TestExpectations file for any other failing tests.
-
-This is used as part of the w3c test auto-import process.
+Specifically, this class fetches results from try bots for the current CL, then
+(1) downloads new baseline files for any tests that can be rebaselined, and
+(2) updates the generic TestExpectations file for any other failing tests.
 """
 
 import argparse
 import copy
 import logging
 
 from webkitpy.common.net.git_cl import GitCL
 from webkitpy.common.net.rietveld import Rietveld
 from webkitpy.common.webkit_finder import WebKitFinder
 from webkitpy.layout_tests.models.test_expectations import TestExpectationLine
 from webkitpy.w3c.test_parser import TestParser
 
 _log = logging.getLogger(__name__)
 
 MARKER_COMMENT = '# ====== New tests from w3c-test-autoroller added here ======'
 
 
-class W3CExpectationsLineAdder(object):
+class WPTExpectationsUpdater(object):
 
     def __init__(self, host):
         self.host = host
         self.host.initialize_scm()
         self.finder = WebKitFinder(self.host.filesystem)
 
     def run(self, args=None):
         """Downloads text new baselines and adds test expectations lines."""
         parser = argparse.ArgumentParser(description=__doc__)
         parser.add_argument('-v', '--verbose', action='store_true', help='More verbose logging.')
@@ skipping 339 matching lines @@
 
         Args:
             test_path: A file path relative to the layout tests directory.
                 This might correspond to a deleted file or a non-test.
         """
         absolute_path = self.host.filesystem.join(self.finder.layout_tests_dir(), test_path)
         test_parser = TestParser(absolute_path, self.host)
         if not test_parser.test_doc:
             return False
         return test_parser.is_jstest()