Check that 'DEPS' is used in gclient solution (not '.DEPS.git').

tools/check_git_config.py

 #!/usr/bin/env python
 # Copyright 2014 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.
 
 """Script that attempts to push to a special git repository to verify that git
 credentials are configured correctly. It also verifies that gclient solution is
 configured to use git checkout.
 
 It will be added as gclient hook shortly before Chromium switches to git and
@@ skipping 42 matching lines @@
 MOTHERSHIP_URL = (
     'https://chromium-git-access.appspot.com/'
     'git_access/api/v1/reports/access_check')
 
 # Repository to push test commits to.
 TEST_REPO_URL = 'https://chromium.googlesource.com/a/playground/access_test'
 
 # Git-compatible gclient solution.
 GOOD_GCLIENT_SOLUTION = {
   'name': 'src',
-  'deps_file': '.DEPS.git',
+  'deps_file': 'DEPS',
   'managed': False,
   'url': 'https://chromium.googlesource.com/chromium/src.git',
 }
 
 # Possible chunks of git push response in case .netrc is misconfigured.
 BAD_ACL_ERRORS = (
   '(prohibited by Gerrit)',
   'does not match your user account',
   'Git repository not found',
   'Invalid user name or password',
@@ skipping 455 matching lines @@
       write_last_configuration(config)
     else:
       logging.warning('Check failed and will be retried on the next run')
   except Exception:
     logging.exception('Unexpected exception when performing git access check')
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))