Remove optional --commit-author argument from auto-rebaseline script.

third_party/WebKit/Tools/Scripts/webkitpy/tool/commands/rebaseline.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 669 matching lines @@
 
     SECONDS_BEFORE_GIVING_UP = 300
 
     def __init__(self):
         super(AutoRebaseline, self).__init__(options=[
             # FIXME: Remove this option.
             self.no_optimize_option,
             # FIXME: Remove this option.
             self.results_directory_option,
             optparse.make_option("--auth-refresh-token-json", help="Rietveld auth refresh JSON token."),
-            optparse.make_option("--commit-author",
-                help='Optionally specify an explicit author for local commit. Format as "Name <email>".'),
             optparse.make_option("--dry-run", action='store_true', default=False,
                 help='Run without creating a temporary branch, committing locally, or uploading/landing '
                 'changes to the remote repository.')
             ])
         self._blame_regex = re.compile(r"""
                 ^(\S*)      # Commit hash
                 [^(]* \(    # Whitespace and open parenthesis
                 <           # Email address is surrounded by <>
                 (
                     [^@]+   # Username preceding @
@@ skipping 194 matching lines @@
                 tool.scm().create_clean_branch(rebaseline_branch_name)
                 did_switch_branches = True
 
             if test_prefix_list:
                 self._rebaseline(options, test_prefix_list)
 
             if options.dry_run:
                 return
 
             tool.scm().commit_locally_with_message(
-                self.commit_message(author, revision, commit, bugs),
-                author=options.commit_author)
+                self.commit_message(author, revision, commit, bugs))
 
             # FIXME: It would be nice if we could dcommit the patch without uploading, but still
             # go through all the precommit hooks. For rebaselines with lots of files, uploading
             # takes a long time and sometimes fails, but we don't want to commit if, e.g. the
             # tree is closed.
             did_finish = self._run_git_cl_command(options, ['upload', '-f'])
 
             if did_finish:
                 # Uploading can take a very long time. Do another pull to make sure TestExpectations is up to date,
                 # so the dcommit can go through.
@@ skipping 92 matching lines @@
                 self._tool.scm().checkout_branch(old_branch_name_or_ref)
         else:
             self._log_queue.put(self.QUIT_LOG)
         log_thread.join()
 
     def execute(self, options, args, tool):
         self._verbose = options.verbose
         while True:
             self._do_one_rebaseline()
             time.sleep(self.SLEEP_TIME_IN_SECONDS)