Break config_default into master_site_configs.

masters/master.chromium.webkit/master.cfg

 # Copyright (c) 2012 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.
 
 from master import master_utils
 from master import slaves_list
 
 import config
+import master_site_config
 
-ActiveMaster = config.Master.ChromiumWebkit
+ActiveMaster = master_site_config.ChromiumWebkit
 
 # Only the production Chromium Buildbots acts as the tree gatekeeper.
 TREE_GATE_KEEPER = ActiveMaster.is_production_host
 
 c = BuildmasterConfig = {}
 c['change_source'] = []
 c['schedulers'] = []
 c['builders'] = []
 c['status'] = []
 
@@ skipping 63 matching lines @@
 # slaves registered to a builder. Remove dupes.
 c['slaves'] = master_utils.AutoSetupSlaves(c['builders'],
                                            config.Master.GetBotPassword())
 master_utils.VerifySetup(c, slaves)
 
 # Adds common status and tools to this master.
 master_utils.AutoSetupMaster(c, ActiveMaster,
     public_html='../master.chromium/public_html',
     templates=['../master.chromium/templates'],
     enable_http_status_push=ActiveMaster.is_production_host)