bot_update: understand new Gerrit patch properties.

recipe_modules/tryserver/example.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.
 
 DEPS = [
   'recipe_engine/json',
   'recipe_engine/raw_io',
   'recipe_engine/path',
   'recipe_engine/platform',
   'recipe_engine/properties',
@@ skipping 47 matching lines @@
   yield (api.test('with_rietveld_patch') +
          api.properties.tryserver() +
          description_step)
 
   yield (api.test('with_wrong_patch') + api.platform('win', 32))
 
   yield (api.test('with_rietveld_patch_new') +
          api.properties.tryserver(test_patch_root='sub/project') +
          description_step)
 
+  yield (api.test('with_gerrit_patch_deprecated') +
+         api.properties.tryserver_gerrit(
+           full_project_name='infra/infra'))
+
+  yield (api.test('with_gerrit_patch') +
+         api.properties.tryserver(gerrit_project='infra/infra'))
+
   yield (api.test('with_wrong_patch_new') + api.platform('win', 32) +
          api.properties(test_patch_root='sub\\project'))
 
   yield (api.test('basic_tags') +
          api.properties(
              patch_text='hihihi\nfoo:bar\nbam:baz',
              footer='foo'
          ) +
          api.step_data(
              'parse description',
              api.json.output({'Foo': ['bar']})) +
          api.step_data(
              'parse description (2)',
              api.json.output({'Foo': ['bar']}))
   )