Make webkit-patch auto-rebaseline a bit more robust to errors.

Tools/Scripts/webkitpy/tool/commands/rebaseline_unittest.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 1111 matching lines @@
 
             self.assertEqual(self.tool.executive.calls, [
                 [
                     ['python', 'echo', 'copy-existing-baselines-internal', '--suffixes', 'txt', '--builder', 'MOCK SnowLeopard', '--test', 'fast/dom/prototype-taco.html'],
                 ],
                 [
                     ['python', 'echo', 'rebaseline-test-internal', '--suffixes', 'txt', '--builder', 'MOCK SnowLeopard', '--test', 'fast/dom/prototype-taco.html'],
                 ],
                 [['python', 'echo', 'optimize-baselines', '--no-modify-scm', '--suffixes', 'txt', 'fast/dom/prototype-taco.html']],
                 ['git', 'cl', 'upload', '-f'],
-                ['git', 'cl', 'set_close'],
             ])
         finally:
             builders._exact_matches = old_exact_matches
 
     def test_execute_test_passes_everywhere(self):
         def blame(path):
             return """
 6469e754a1 path/to/TestExpectations                   (foobarbaz1@chromium.org 2013-04-28 04:52:41 +0000   13) Bug(foo) fast/dom/prototype-taco.html [ NeedsRebaseline ]
 """
         self.tool.scm().blame = blame
@@ skipping 94 matching lines @@
         oc.capture_output()
         self.command._do_one_rebaseline()
         out, _, _ = oc.restore_output()
 
         self.assertEqual(out, 'MOCK STDOUT\n')
         self.assertEqual(self.tool.executive.calls, [
             ['git', 'pull'],
             ['/mock-checkout/third_party/WebKit/Tools/Scripts/webkit-patch', 'auto-rebaseline', '--verbose'],
         ])
         self.assertEqual(self._logs, ['MOCK STDOUT'])