Update legacy bisect to post results to perf dashboard.

tools/auto_bisect/bisect_results.py

 # Copyright 2014 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 math
 import os
 
 import bisect_utils
 import math_utils
 import source_control
@@ skipping 38 matching lines @@
     second option creates an error result.
 
     Args:
       bisect_state: BisectState object representing latest bisect state.
       depot_registry: DepotDirectoryRegistry object with information on each
           repository in the bisect_state.
       opts: Options passed to the bisect run.
       runtime_warnings: A list of warnings from the bisect run.
       error: Error message. When error is not None, other arguments are ignored.
     """
+    # Setting these attributes so that bisect printer does not break when the
+    # regression cannot be reproduced (no broken revision was found)
+    self.regression_size = 0
+    self.regression_std_err = 0
+    self.confidence = 0
+    self.culprit_revisions = []
+
     self.error = error
     self.abort_reason = abort_reason
     if error is not None or abort_reason is not None:
       return
 
     assert (bisect_state is not None and depot_registry is not None and
             opts is not None and runtime_warnings is not None), (
                 'Incorrect use of the BisectResults constructor. '
                 'When error is None, all other arguments are required.')
 
@@ skipping 15 matching lines @@
 
       self.regression_size = statistics['regression_size']
       self.regression_std_err = statistics['regression_std_err']
       self.confidence = statistics['confidence']
 
       self.culprit_revisions = self._FindCulpritRevisions(
           rev_states, depot_registry, first_working_rev, last_broken_rev)
 
       self.warnings += self._GetResultBasedWarnings(
           self.culprit_revisions, opts, self.confidence)
-    elif first_working_rev is not None:
-      # Setting these attributes so that bisect printer does not break when the
-      # regression cannot be reproduced (no broken revision was found)
-      self.regression_size = 0
-      self.regression_std_err = 0
-      self.confidence = 0
-      self.culprit_revisions = []
 
   def AddRetestResults(self, results_tot, results_reverted):
     if not results_tot or not results_reverted:
       self.warnings.append(
           'Failed to re-test reverted culprit CL against ToT.')
       return
 
     confidence = BisectResults.ConfidenceScore(
         results_reverted[0]['values'],
         results_tot[0]['values'])
@@ skipping 142 matching lines @@
     confidence = cls.ConfidenceScore(
         sum([first_working_rev.value['values']], []),
         sum([last_broken_rev.value['values']], []))
 
     bad_greater_than_good = mean_of_bad_runs > mean_of_good_runs
 
     return {'regression_size': regression_size,
             'regression_std_err': regression_std_err,
             'confidence': confidence,
             'bad_greater_than_good': bad_greater_than_good}