RELAND of Cross-repo recipe package system.

scripts/slave/recipes/chromium_trybot.py

 # Copyright 2013 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 collections
 
-from infra.libs.infra_types import freeze
+from recipe_engine.types import freeze
 
 DEPS = [
   'amp',
   'bot_update',
   'chromium',
   'chromium_android',
   'chromium_tests',
+  'file',
   'gclient',
   'gpu',
   'isolate',
-  'itertools',
   'json',
   'path',
   'platform',
   'properties',
   'python',
   'raw_io',
   'step',
   'swarming',
   'test_utils',
   'tryserver',
@@ skipping 772 matching lines @@
       override_bot_type='builder_tester')
 
   if not tests:
     return
 
   api.chromium_tests.run_tests_and_deapply_as_needed(mastername, api, tests,
                                                      bot_update_step)
 
 
 def RunSteps(api):
+  # build/tests/masters_recipes_tests.py needs to manipulate the BUILDERS
+  # dict, so we provide an API to dump it here.
+  if api.properties.get('dump_builders'):  # pragma: no cover
+    api.file.copy('Dump BUILDERS dict',
+        api.json.input(BUILDERS), api.properties['dump_builders'])
+    return
+
   with api.tryserver.set_failure_hash():
     return _RunStepsInternal(api)
 
 
 def _sanitize_nonalpha(text):
   return ''.join(c if c.isalnum() else '_' for c in text)
 
 
 def GenTests(api):
   canned_test = api.test_utils.canned_gtest_output
@@ skipping 699 matching lines @@
                            api.test_utils.canned_test_output(passing=True))
   )
 
   yield (
     api.test('use_v8_patch_on_blink_trybot') +
     props(mastername='tryserver.blink',
           buildername='mac_blink_rel',
           patch_project='v8') +
     api.platform.name('mac')
   )