Reland "Support xctests"

scripts/slave/recipes/ios/try.py

 # Copyright 2015 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 = [
+  'ios',
   'depot_tools/gclient',
-  'ios',
+  'depot_tools/tryserver',
   'recipe_engine/json',
   'recipe_engine/platform',
   'recipe_engine/properties',
   'recipe_engine/raw_io',
   'recipe_engine/step',
-  'depot_tools/tryserver',
 ]
 
 def RunSteps(api):
   with api.tryserver.set_failure_hash():
     api.ios.host_info()
     bot_update_step = api.ios.checkout()
     # Ensure try bots mirror configs from chromium.mac.
     api.ios.read_build_config(master_name='chromium.mac')
     try:
       api.ios.build(suffix='with patch')
@@ skipping 43 matching lines @@
         'fake gyp define 1': 'fake value 1',
         'fake gyp define 2': 'fake value 2',
       },
       'configuration': 'Debug',
       'sdk': 'iphonesimulator8.0',
       'tests': [
         {
           'app': 'fake tests',
           'device type': 'fake device',
           'os': '8.1',
+          'xctest': True,
         },
       ],
     })
     + api.step_data(
         'bootstrap swarming.swarming.py --version',
         stdout=api.raw_io.output('1.2.3'),
     )
     + suppress_analyze()
   )
 
@@ skipping 317 matching lines @@
           'os': '8.1',
         },
       ],
     })
     + api.step_data(
         'bootstrap swarming.swarming.py --version',
         stdout=api.raw_io.output('1.2.3'),
     )
     + suppress_analyze()
   )