Move builders.py and steps.py to chromium_tests.

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.
 
 from infra.libs.infra_types import freeze
 
 DEPS = [
   'bot_update',
   'chromium',
   'chromium_android',
@@ skipping 393 matching lines @@
         bot_update_step.presentation.properties['got_revision'],
         bot_update_step.presentation.properties['got_webkit_revision'],
         enable_swarming=True,
         swarming_dimension_sets=CHROMIUM_GPU_DIMENSION_SETS[master][builder]))
 
   # TODO(phajdan.jr): Remove special case for layout tests.
   # This could be done by moving layout tests to main waterfall.
   affected_files = api.tryserver.get_files_affected_by_patch()
   if (any([f.startswith('third_party/WebKit') for f in affected_files]) and
       buildername in CHROMIUM_BLINK_TESTS_BUILDERS):
-    tests.append(api.chromium.steps.BlinkTest())
+    tests.append(api.chromium_tests.steps.BlinkTest())
 
   compile_targets, tests_including_triggered = \
       api.chromium_tests.get_compile_targets_and_tests(
           bot_config['mastername'],
           bot_config['buildername'],
           master_dict,
           override_bot_type='builder_tester',
           override_tests=tests)
 
   requires_compile, matching_exes, compile_targets = \
@@ skipping 564 matching lines @@
 
   yield (
     api.test('swarming_paths') +
     api.properties.tryserver(
       mastername='tryserver.chromium.linux',
       buildername='linux_chromium_rel_ng',
       path_config='swarming',
     ) +
     api.platform.name('linux')
   )