Don't track SCM changes in rebaseline commands.

third_party/WebKit/Tools/Scripts/webkitpy/tool/commands/rebaseline_cl_unittest.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.
 
 import json
 import optparse
 
 from webkitpy.common.net.buildbot import Build
 from webkitpy.common.net.rietveld import Rietveld
 from webkitpy.common.net.web_mock import MockWeb
@@ skipping 70 matching lines @@
             'optimize': True,
             'results_directory': None,
             'verbose': False,
             'trigger_jobs': False,
         }
         options.update(kwargs)
         return optparse.Values(dict(**options))
 
     def test_execute_with_issue_number_given(self):
         self.command.execute(self.command_options(issue=11112222), [], self.tool)
-        print self._log.messages()
         self.assertLog([
             'INFO: Tests to rebaseline:\n',
             'INFO:   svg/dynamic-updates/SVGFEDropShadowElement-dom-stdDeviation-attr.html: MOCK Try Win (5000)\n',
             'INFO:   fast/dom/prototype-inheritance.html: MOCK Try Win (5000)\n',
             'INFO:   fast/dom/prototype-taco.html: MOCK Try Win (5000)\n',
             'INFO: Rebaselining fast/dom/prototype-inheritance.html\n',
             'INFO: Rebaselining fast/dom/prototype-taco.html\n',
             'INFO: Rebaselining svg/dynamic-updates/SVGFEDropShadowElement-dom-stdDeviation-attr.html\n',
         ])
 
@@ skipping 68 matching lines @@
             self.command_options(issue=11112222),
             {"fast/dom/prototype-taco.html": {Build("MOCK Try Win", 5000): ["txt", "png"]}})
 
         self.assertEqual(
             self.tool.executive.calls,
             [
                 [['python', 'echo', 'copy-existing-baselines-internal', '--suffixes', 'txt',
                   '--builder', 'MOCK Try Win', '--test', 'fast/dom/prototype-taco.html']],
                 [['python', 'echo', 'rebaseline-test-internal', '--suffixes', 'txt',
                   '--builder', 'MOCK Try Win', '--test', 'fast/dom/prototype-taco.html', '--build-number', '5000']],
-                [['python', 'echo', 'optimize-baselines', '--no-modify-scm', '--suffixes', 'txt', 'fast/dom/prototype-taco.html']]
+                [['python', 'echo', 'optimize-baselines', '--suffixes', 'txt', 'fast/dom/prototype-taco.html']]
             ])