Add ChromiumOS Trybot support.

scripts/master/try_job_base_bb7.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.
 
 import os
 
 from buildbot import buildset
 from buildbot.changes.changes import Change
 from buildbot.scheduler import BadJobfile
 from buildbot.scheduler import TryBase  # pylint: disable=W0611
@@ skipping 22 matching lines @@
     jobstamp = TryJobStamp(
         branch=options['branch'],
         revision=options['revision'],
         patch=patch,
         changes=fake_changes,
         last_good_url=last_good_url,
         code_review_site=code_review_site,
         job_name=options['name'],
         patchset=options['patchset'],
         issue=options['issue'])
-    return options['bot'], jobstamp, options['name'], self.get_props(options)
+    return options['bot'], jobstamp, options['reason'], self.get_props(options)
 
   def CancelJobsMatching(self, source_stamp, builder_name):
     """Cancels any jobs with the same job and owner."""
 
     if (not isinstance(source_stamp, TryJobStamp) or
         len(source_stamp.changes) != 1):
       # Not a try job.
       return
 
     # TODO(maruel): remove once pylint improves its type inference.
@@ skipping 57 matching lines @@
           reason=reason,
           bsid=buildset_id,
           properties=props)
       build_sets.append(build_set)
       self.CancelJobsMatching(build_set, builder_name)
     for build_set in build_sets:
       # Type inference error.
       # pylint: disable=E1101
       self.parent.submitBuildSet(build_set)
     return http.OK