Move builders.py and steps.py to chromium_tests.

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 216 matching lines @@
 
   if 'cl_info' in revision_data:
     step_name = 'Reading culprit cl information.'
     stdout = api.raw_io.output(revision_data['cl_info'])
     yield api.step_data(step_name, stdout=stdout)
 
 
 def _ensure_checkout(api):
   mastername = api.properties.get('mastername')
   buildername = api.properties.get('buildername')
+  # TODO(akuegel): Explicitly load the configs for the builders and don't rely
+  # on builders.py in chromium_tests recipe module.
   api.chromium_tests.configure_build(mastername, buildername)
   api.chromium_tests.prepare_checkout(mastername, buildername)
 
 
 def _gather_reference_range(api, bisector):
   bisector.good_rev.start_job()
   bisector.bad_rev.start_job()
   bisector.wait_for_all([bisector.good_rev, bisector.bad_rev])
   if bisector.good_rev.failed:
     api.halt('Testing the "good" revision failed')
@@ skipping 32 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()