De-duplicate steps between chromium and chromium_trybot recipes

scripts/slave/recipes/chromium.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.
 
 DEPS = [
   'archive',
   'bot_update',
   'chromium',
   'chromium_android',
   'gclient',
@@ skipping 201 matching lines @@
         extra_url_components=api.properties['mastername'],),
       build_revision=got_revision,
       # TODO(phajdan.jr): Move abort_on_failure to archive recipe module.
       abort_on_failure=True))
 
   if (api.chromium.c.TARGET_PLATFORM == 'android' and
       bot_type in ['tester', 'builder_tester']):
     steps.append(api.chromium_android.common_tests_setup_steps())
 
   if not bot_config.get('do_not_run_tests'):
-    test_steps = [t.run(api) for t in bot_config.get('tests', [])]
+    test_steps = [t.run(api, '') for t in bot_config.get('tests', [])]
     steps.extend(api.chromium.setup_tests(bot_type, test_steps))
 
   if (api.chromium.c.TARGET_PLATFORM == 'android' and
       bot_type in ['tester', 'builder_tester']):
     steps.append(api.chromium_android.common_tests_final_steps())
 
   # For non-trybot recipes we should know (seed) all steps in advance,
   # at the beginning of each build. Instead of yielding single steps
   # or groups of steps, yield all of them at the end.
   yield steps
@@ skipping 97 matching lines @@
                            buildername='Chromium Linux MSan',
                            parent_buildername='Chromium Linux MSan Builder') +
     api.platform('linux', 64) +
     api.override_step_data('read test spec', api.json.output({
       'Chromium Linux MSan': {
         'compile_targets': ['base_unittests'],
         'gtest_tests': ['base_unittests'],
       },
     }))
   )