Do not freak out if 'deps_file' is not specified.

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 363 matching lines @@
   return uploaded and not flake
 
 
 def check_gclient_config(conf):
   """Shows warning if gclient solution is not properly configured for git."""
   # Ignore configs that do not have 'src' solution at all.
   if not conf['gclient_url']:
     return
   current = {
     'name': 'src',
-    'deps_file': conf['gclient_deps'],
+    'deps_file': conf['gclient_deps'] or 'DEPS',
     'managed': conf['gclient_managed'] or False,
     'url': conf['gclient_url'],
   }
   good = GOOD_GCLIENT_SOLUTION
   if current == good:
     return
   # Show big warning if url or deps_file is wrong.
   if current['url'] != good['url'] or current['deps_file'] != good['deps_file']:
     print '-' * 80
     print 'Your gclient solution is not set to use supported git workflow!'
@@ skipping 134 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:]))