CQ: Remove one out of two usages of buildbot_json in try_job_on_rietveld.py

commit-queue/verification/try_job_on_rietveld.py

 # coding=utf8
 # 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.
 """Sends patches to the Try server and reads back results.
 
 - RietveldTryJobs contains RietveldTryJob, one per try job on a builder.
 - TryRunnerRietveld uses Rietveld to signal and poll job results.
 """
 
@@ skipping 649 matching lines @@
                                                  pending, now)
 
   @model.immutable
   def _build_status_url(self, job):
     """Html url for this try job."""
     assert job.build is not None, str(job)
     return '%s/buildstatus?builder=%s&number=%s' % (
         self.try_server_url, job.builder, job.build)
 
   @model.immutable
-  def _update_dashboard(self, pending, job, status):
+  def _update_dashboard(self, pending, job):
     """Updates the CQ dashboard with the current Try Job state as known to the
     CQ.
     """
     logging.debug('_update_dashboard(%s/%s)', job.builder, job.build)
-    build = status.builders[job.builder].builds[job.build]
     info = {
       'build': job.build,
       'builder': job.builder,
-      'duration': build.duration,
       'job_name': 'CQ',
       'result': job.result,
       'revision': job.revision,
       'url': self._build_status_url(job),
     }
     self.send_status(pending, info)
 
   def _update_jobs_from_rietveld(self, pending, jobs, handle, now):
     """Grabs data from Rietveld and pass it to
     RietveldTryJobs.update_jobs_from_rietveld().
@@ skipping 45 matching lines @@
       # Temporary AppEngine hiccup. Just log it and return failure.
       if e.errno == 'socket error':
         logging.warning(
             '%s while updating tryserver status for rietveld issue %s.' % (
             str(e), str(pending.issue)))
         return False
       raise
     if handle:
       for updated_key in keys:
         job = jobs.try_jobs[updated_key]
-        self._update_dashboard(pending, job, status)
+        self._update_dashboard(pending, job)
         jobs.signal_as_failed_if_needed(job, self._build_status_url(job), now)
 
     return True