Revert "Remove all safesync_url functionality from gclient"

fetch_configs/nacl.py

 # 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.
 
 import sys
 
 import config_util  # pylint: disable=F0401
 
 
 # This class doesn't need an __init__ method, so we disable the warning
 # pylint: disable=W0232
 class NaCl(config_util.Config):
   """Basic Config class for NaCl."""
 
   @staticmethod
   def fetch_spec(props):
     url = ('https://chromium.googlesource.com/native_client/'
            'src/native_client.git')
     solution = {
         'name'        : 'native_client',
         'url'         : url,
         'deps_file'   : 'DEPS',
         'managed'     : False,
         'custom_deps' : {},
+        'safesync_url': '',
     }
     spec = {
       'solutions': [solution],
     }
     if props.get('target_os'):
       spec['target_os'] = props['target_os'].split(',')
     if props.get('target_os_only'):
       spec['target_os_only'] = props['target_os_only']
     return {
       'type': 'gclient_git',
       'gclient_git_spec': spec,
     }
 
   @staticmethod
   def expected_root(_props):
     return 'native_client'
 
 
 def main(argv=None):
   return NaCl().handle_args(argv)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))