add receipes for goma staging

scripts/slave/recipe_modules/chromium_tests/api.py

 # Copyright 2014 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 ast
 import contextlib
 import copy
 import itertools
 import json
 
@@ skipping 503 matching lines @@
                                              got_revision),
         build_archive_url=specified_url)
 
       if (self.m.chromium.c.TARGET_PLATFORM == 'android' and
           bot_config.get('root_devices')):
         self.m.adb.root_devices()
 
     # TODO(shinyak): bot_config.get('tests', []) sometimes return tuple.
     tests = list(bot_config.get('tests', []))
 
-    if bot_config.get('goma_canary'):
+    if bot_config.get('goma_canary') or bot_config.get('goma_staging'):
       tests.insert(0, steps.DiagnoseGomaTest())
 
     if bot_type in ('tester', 'builder_tester'):
       isolated_targets = [t.isolate_target for t in tests if t.uses_swarming]
       if isolated_targets:
         self.m.isolate.find_isolated_tests(self.m.chromium.output_dir)
 
     return tests
 
   def _make_legacy_build_url(self, master_config, mastername):
@@ skipping 272 matching lines @@
       result_text = 'MB is enabled for this builder at this revision.'
       log_name = 'Builder MB-ready'
       self.m.step.active_result.presentation.logs[log_name] = [result_text]
       return False
     except (self.m.step.StepFailure, KeyError):
       result_text = 'MB is not enabled for this builder at this revision.'
       log_name = 'Builder NOT MB-ready'
       self.m.step.active_result.presentation.logs[log_name] = [result_text]
       self.m.step.active_result.presentation.status = self.m.step.WARNING
       return True