Fix presubmit checkout test after git 2.9.0

tests/checkout_test.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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.
 
 """Unit tests for checkout.py."""
 
 import logging
 import os
 import shutil
@@ skipping 293 matching lines @@
   def testProcess(self):
     self._test_process(self._get_co)
 
   def _testPrepare(self):
     self._test_prepare(self._get_co(None))
 
   def testMove(self):
     co = self._get_co(None)
     self._check_move(co)
     out = subprocess2.check_output(
-        ['git', 'diff', '--staged', '--name-status'], cwd=co.project_path)
+        ['git', 'diff', '--staged', '--name-status', '--no-renames'],
+        cwd=co.project_path)
     out = sorted(out.splitlines())
     expected = sorted(
       [
         'A\tchromeos/views/webui_menu_widget.h',
         'D\tchromeos/views/DOMui_menu_widget.h',
       ])
     self.assertEquals(expected, out)
 
 
 if __name__ == '__main__':
   if '-v' in sys.argv:
     DEBUGGING = True
     logging.basicConfig(
         level=logging.DEBUG,
         format='%(levelname)5s %(filename)15s(%(lineno)3d): %(message)s')
   else:
     logging.basicConfig(
         level=logging.ERROR,
         format='%(levelname)5s %(filename)15s(%(lineno)3d): %(message)s')
   unittest.main()