Allow ADM(X) templates to manage both MACHINE and USER policies

tools/grit/grit/format/policy_templates/writer_configuration.py

 # Copyright (c) 2011 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.
 
 
 def GetConfigurationForBuild(defines):
   '''Returns a configuration dictionary for the given build that contains
   build-specific settings and information.
 
   Args:
@@ skipping 25 matching lines @@
       'app_name': 'Google Chrome',
       'frame_name': 'Google Chrome Frame',
       'os_name': 'Google Chrome OS',
       'win_reg_key_name': 'Software\\Policies\\Google\\Chrome',
       'win_category_path': ['google', 'googlechrome'],
       'admx_namespace': 'Google.Policies.Chrome',
       'admx_prefix': 'chrome',
     }
   else:
     raise Exception('Unknown build')
-  config['win_group_policy_class'] = 'Machine'
+  config['win_group_policy_class'] = 'both'
   config['win_supported_os'] = 'SUPPORTED_WINXPSP2'
   if 'mac_bundle_id' in defines:
     config['mac_bundle_id'] = defines['mac_bundle_id']
   return config