Adding ability to bisect recipe to bisect into dependency repos.

scripts/slave/recipes/bisect.py

 # Copyright 2015 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 base64
 import collections
 import json
 
 DEPS = [
     'auto_bisect',
@@ skipping 14 matching lines @@
     bisect_config = base64.b32decode(bisect_config)
     bisect_config = json.loads(bisect_config)
   else:
     bisect_config = api.properties.get('bisect_config')
   assert isinstance(bisect_config, collections.Mapping)
   bisector = api.auto_bisect.create_bisector(bisect_config)
   _gather_reference_range(bisector)
   _ensure_checkout(api)
   if (not bisector.failed and bisector.check_improvement_direction() and
       bisector.check_regression_confidence()):
-    _bisect_main_loop(bisector)
+    if not bisector.check_bisect_finished(bisector.good_rev):
+      _bisect_main_loop(bisector)
   else: #pragma: no cover
     bisector.bisect_over = True
   bisector.print_result()
 
 
 def GenTests(api):
   basic_test = api.test('basic')
   encoded_config_test = api.test('encoded_config_test')
   broken_cp_test = api.test('broken_cp_test')
   broken_hash_test = api.test('broken_hash_test')
@@ skipping 174 matching lines @@
   If such revision completes the bisect process it sets the flag so that the
   main loop stops.
   """
   while revisions_to_check:
     completed_revision = bisector.wait_for_any(revisions_to_check)
     revisions_to_check.remove(completed_revision)
     if not completed_revision.aborted:
       if bisector.check_bisect_finished(completed_revision):
         bisector.bisect_over = True
       bisector.abort_unnecessary_jobs()