chromium_win_clang_official recipe config: check out internal sources

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 contextlib
 import copy
 import json
 
 from infra.libs.infra_types import freeze, thaw
 from slave import recipe_api
@@ skipping 115 matching lines @@
     'chromium_config': 'chromium_win_clang',
     'gclient_config': 'chromium',
   },
   'chromium_win_clang_asan': {
     'chromium_config': 'chromium_win_clang_asan',
     'gclient_config': 'chromium',
   },
   'chromium_win_clang_official': {
     'chromium_config': 'chromium_win_clang_official',
     'gclient_config': 'chromium',
+    'gclient_apply_config': ['chrome_internal'],
   },
   'chromium_win_asan': {
     'chromium_config': 'chromium_win_asan',
     'gclient_config': 'chromium',
   },
   'chromium_linux_goma_canary': {
     'chromium_config': 'chromium',
     'chromium_apply_config': ['goma_canary'],
     'gclient_config': 'chromium',
   },
@@ skipping 578 matching lines @@
           master_config.get('build_gs_bucket'),
           extra_url_components=None)
     elif (mastername == 'tryserver.chromium.perf' or
           (mastername == 'tryserver.chromium.linux' and
            buildername == 'linux_full_bisect_builder')):
       return None
     else:
       return self.m.archive.legacy_upload_url(
           master_config.get('build_gs_bucket'),
           extra_url_components=self.m.properties['mastername'])