Set nest step status when test failure for Chromedriver recipe.

scripts/slave/recipe_modules/chromedriver/example.py

 # Copyright 2016 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.
 
 from recipe_engine import recipe_api
 from recipe_engine.types import freeze
 
 DEPS = [
   'archive',
   'chromedriver',
@@ skipping 65 matching lines @@
           got_revision_cp='refs/heads/master@{#3333333333}'))
 
   yield (
       api.test('%s_test_failure' % sanitize('Android ChromeDriver')) +
       api.properties.generic(
           buildername='Android ChromeDriver Tests Example',
           slavename='slavename') +
       api.properties(
           parent_build_archive_url='gs://test-domain/test-archive.zip',
           got_revision_cp='refs/heads/master@{#3333333333}') +
-      api.step_data('java_tests chrome_stable', retcode=1))
+      api.step_data('java_tests chrome_stable.Run Tests', retcode=1))
 
   yield (
       api.test('%s_commit_already_in_logs' % sanitize('Android ChromeDriver')) +
       api.properties.generic(
           buildername='Android ChromeDriver Tests Example',
           slavename='slavename') +
       api.properties(
           parent_build_archive_url='gs://test-domain/test-archive.zip',
           got_revision_cp='refs/heads/master@{#3333333333}') +
       api.step_data('Download Test Results Log.read results log file',
                     api.raw_io.output('{"3333333333": true}')))
 
   yield (
       api.test('%s_download_logs_failure' % sanitize('Android ChromeDriver')) +
       api.properties.generic(
           buildername='Android ChromeDriver Tests Example',
           slavename='slavename') +
       api.properties(
           parent_build_archive_url='gs://test-domain/test-archive.zip',
           got_revision_cp='refs/heads/master@{#3333333333}') +
       api.step_data(
           'Download Test Results Log.gsutil download results log', retcode=1))