Allow a single trybot to mirror multiple waterfall bots.

scripts/slave/recipes/bisection/desktop_bisect.py

 # Copyright (c) 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.
 
 DEPS = [
   'auto_bisect',
   'bisect_tester',
   'chromium',
   'chromium_tests',
   'gclient',
   'recipe_engine/json',
   'recipe_engine/path',
   'recipe_engine/platform',
   'recipe_engine/properties',
   'recipe_engine/raw_io',
   'recipe_engine/step'
 ]
 
 def RunSteps(api):
   mastername = api.properties.get('mastername')
   buildername = api.properties.get('buildername')
   # TODO(akuegel): Explicitly load the builder configs instead of relying on
   # builder.py from chromium_tests recipe module.
-  api.chromium_tests.configure_build(mastername, buildername)
+  bot_desc = api.chromium_tests.create_bot_desc(mastername, buildername)
+  api.chromium_tests.configure_build(bot_desc)
   api.gclient.apply_config('perf')
   update_step, bot_db = \
-      api.chromium_tests.prepare_checkout(mastername, buildername)
+      api.chromium_tests.prepare_checkout(bot_desc)
   api.auto_bisect.start_try_job(api, update_step=update_step,
                                 bot_db=bot_db)
 
 def GenTests(api):
   yield (api.test('basic')
   +api.properties.tryserver(
       mastername='tryserver.chromium.perf',
       buildername='linux_perf_bisect')
   + api.override_step_data(
       'git diff to analyze patch',
@@ skipping 199 matching lines @@
                   stdout=api.raw_io.output('/tmp/dummy1'))
   + api.step_data('saving json to temp file',
                    stdout=api.raw_io.output('/tmp/dummy2'))
   + api.properties(bisect_config=bisect_ret_code_config)
   + api.properties(job_name='f7a7b4135624439cbd27fdd5133d74ec')
   + api.bisect_tester(tempfile='/tmp/dummy')
   + api.properties(parent_got_revision='1111111')
   + api.properties(parent_build_archive_url='gs://test-domain/test-archive.zip')
   )