Add a new master for chromium on chromium OS

masters/master.chromium/master_gatekeeper_cfg.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.
 
 from master import gatekeeper
 from master import master_utils
 
 # This is the list of the builder categories and the corresponding critical
 # steps. If one critical step fails, gatekeeper will close the tree
 # automatically.
@@ skipping 30 matching lines @@
     'test_shell_tests',
     'unit_tests',
     #'ui_tests',
     #'webkit_tests',
    ],
   'windows': ['svnkill', 'taskkill'],
   'compile': ['check_deps', 'compile', 'archive_build']
 }
 
 exclusions = {
-    'Chromium Arm': None,
-    'Chromium Arm (dbg)': None,
 }
 
 forgiving_steps = ['update_scripts', 'update', 'svnkill', 'taskkill',
                    'archive_build', 'start_crash_handler']
 
 def Update(config, active_master, c):
   c['status'].append(gatekeeper.GateKeeper(
       fromaddr=active_master.from_address,
       categories_steps=categories_steps,
       exclusions=exclusions,
       relayhost=config.Master.smtp,
       subject='buildbot %(result)s in %(projectName)s on %(builder)s, '
               'revision %(revision)s',
       extraRecipients=active_master.tree_closing_notification_recipients,
       lookup=master_utils.FilterDomain(),
       forgiving_steps=forgiving_steps,
       tree_status_url=active_master.tree_status_url,
       use_getname=True))