Aborting bisect early when the bug specified in the bisect config is closed.

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 20 matching lines @@
     regression_size: For performance bisects, this is a relative change of
         the mean metric value. For other bisects this field always contains
         'zero-to-nonzero'.
     regression_std_err: For performance bisects, it is a pooled standard error
         for groups of good and bad runs. Not used for other bisects.
     confidence: For performance bisects, it is a confidence that the good and
         bad runs are distinct groups. Not used for non-performance bisects.
   """
 
   def __init__(self, bisect_state=None, depot_registry=None, opts=None,
-               runtime_warnings=None, error=None):
+               runtime_warnings=None, error=None, abort_reason=None):
     """Computes final bisect results after a bisect run is complete.
 
     This constructor should be called in one of the following ways:
       BisectResults(state, depot_registry, opts, runtime_warnings)
       BisectResults(error=error)
 
     First option creates an object representing successful bisect results, while
     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.
     """
 
     self.error = error
-    if error is not None:
+    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')
 
     self.state = bisect_state
 
     rev_states = bisect_state.GetRevisionStates()
@@ skipping 191 matching lines @@
     # overall graph is.
     confidence_params = (sum(working_means, []), sum(broken_means, []))
     confidence = cls.ConfidenceScore(*confidence_params)
 
     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}