webrtc: drop dependency on chromium_tests; extract chromium_swarming

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 recipe_engine.types import freeze
 
 DEPS = [
   'depot_tools/bot_update',
   'chromium',
   'chromium_android',
+  'chromium_swarming',
   'chromium_tests',
   'commit_position',
   'file',
   'depot_tools/gclient',
   'isolate',
   'recipe_engine/json',
   'recipe_engine/path',
   'recipe_engine/platform',
   'recipe_engine/properties',
   'recipe_engine/python',
@@ skipping 78 matching lines @@
   mastername = api.properties.get('mastername')
   buildername = api.properties.get('buildername')
   bot_config = _get_bot_config(mastername, buildername)
 
   bot_config_object = api.chromium_tests.create_generalized_bot_config_object(
       bot_config['bot_ids'])
   api.chromium_tests.set_precommit_mode()
   api.chromium_tests.configure_build(
       bot_config_object, override_bot_type='builder_tester')
 
-  api.chromium_tests.configure_swarming('chromium', precommit=True)
+  api.chromium_swarming.configure_swarming('chromium', precommit=True)
 
   api.chromium.apply_config('trybot_flavor')
 
   if api.properties.get('patch_project') == 'blink':  # pragma: no cover
     raise Exception('CLs which use blink project are not supported. '
                     'Please re-create the CL using fresh checkout after '
                     'the blink merge.')
 
   bot_update_step, bot_db = api.chromium_tests.prepare_checkout(
       bot_config_object)
@@ skipping 821 matching lines @@
     props(mastername='tryserver.v8',
           buildername='v8_linux_blink_rel',
           patch_project='v8') +
     api.platform.name('linux') +
     suppress_analyze(more_exclusions=['v8/f.*']) +
     api.override_step_data('webkit_tests (with patch)',
         api.test_utils.canned_test_output(passing=False)) +
     api.override_step_data('webkit_tests (without patch)',
         api.test_utils.canned_test_output(passing=True, minimal=True))
   )