Fix depot_tools presubmit's local_rietveld script.

fetch_configs/infra.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 Infra(config_util.Config):
   """Basic Config class for the Infrastructure repositories."""
 
   @staticmethod
-  def fetch_spec(_props):
+  def fetch_spec(props):
+    # This is used by [depot_tools]/testing_support/local_rietveld.py
+    managed = props.get('managed', 'false').lower() == 'true'
     return {
       'type': 'gclient_git',
       'gclient_git_spec': {
         'solutions': [
           {
             'name'     : 'infra',
             'url'      : 'https://chromium.googlesource.com/infra/infra.git',
             'deps_file': '.DEPS.git',
-            'managed'  : False,
+            'managed'  : managed,
           }
         ],
       },
     }
 
   @staticmethod
   def expected_root(_props):
     return 'infra'
 
 
 def main(argv=None):
   return Infra().handle_args(argv)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))