Reland of Use the crrev recipe module to fetch commit hashes.

scripts/slave/recipes/bisect_test/example_bisect_results.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.
 
 """This example file is meant to provide coverage to bisect_results."""
 
 DEPS = [
     'auto_bisect',
     'recipe_engine/json',
     'recipe_engine/path',
@@ skipping 73 matching lines @@
   """
   for k, v in attributes.iteritems():
     if '.' in k:
       sub_target = getattr(target, k.split('.')[0])
       setattr(sub_target, k.split('.')[1], v)
     else:
       setattr(target, k, v)
 
 
 def add_revision_mapping(api, test, pos, sha):
-  step_name = 'Resolving reference range.resolving commit_pos ' + pos
-  stdout = api.raw_io.output('hash:' + sha)
+  step_name = ('Resolving reference range.crrev get commit hash for ' +
+               'refs/heads/master@{#%s}' % pos)
+  stdout = api.json.output({'git_sha': sha})
   test += api.step_data(step_name, stdout=stdout)
+
   step_name = 'Resolving reference range.resolving hash ' + sha
   pos = 'refs/heads/master@{#%s}' % pos
   stdout = api.raw_io.output(pos)
   return test
 
 
 def add_revision_info(api, test):
   step_name = 'Reading culprit cl information.'
   rev_info = {
       'author': 'DummyAuthor',
@@ skipping 60 matching lines @@
   aborted_bisect_test = api.test('aborted_non_telemetry_test')
   aborted_bisect_test = get_post_bisect_step_data(api, aborted_bisect_test)
   aborted_bisect_test = add_revision_mapping(api, aborted_bisect_test, '314015',
                                              'c001c0de')
   aborted_bisect_test = add_revision_mapping(api, aborted_bisect_test, '314017',
                                              'deadbeef')
   aborted_bisect_test += api.properties(
       bisect_config = NON_TELEMETRY_TEST_CONFIG,
       dummy_bisector_attributes = ABORTED_BISECT_ATTRIBUTES)
   yield aborted_bisect_test