Disable service_unittests on Mac Pros.

content/test/gpu/generate_buildbot_json.py

 #!/usr/bin/env python
 # 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.
 
 """Script to generate chromium.gpu.json and chromium.gpu.fyi.json in
 the src/testing/buildbot directory. Maintaining these files by hand is
 too unwieldy.
 """
 
@@ skipping 1240 matching lines @@
         'os_types': ['win'],
       }
     ],
     'args': [
       '--use-gpu-in-tests',
       '--use-angle=gl',
       '--disable-gpu-sandbox',
     ],
     'test': 'gles2_conform_test',
   },
+  # Face and barcode detection unit tests, which currently only run on
+  # Mac OS, and require physical hardware.
   'service_unittests': {
     'tester_configs': [
       {
         # Run this on the FYI waterfall and optional tryservers.
         'predicate': Predicates.FYI_AND_OPTIONAL,
         'os_types': ['mac'],
       },
     ],
+    'disabled_tester_configs': [
+      {
+        'swarming_dimension_sets': [
+          # These tests fail on the Mac Pros.
+          {
+            'gpu': '1002:679e',
+          },
+        ],
+      },
+    ],
     'args': [
       '--gtest_filter=*Detection*',
       '--use-gpu-in-tests'
     ]
   },
   'swiftshader_unittests': {
     'tester_configs': [
       {
         # Run this on the FYI waterfall and optional tryservers.
         'predicate': Predicates.FYI_AND_OPTIONAL,
@@ skipping 651 matching lines @@
   install_parent_links(WATERFALL)
   install_parent_links(V8_FYI_WATERFALL)
 
   generate_all_tests(FYI_WATERFALL, 'chromium.gpu.fyi.json')
   generate_all_tests(WATERFALL, 'chromium.gpu.json')
   generate_all_tests(V8_FYI_WATERFALL, 'client.v8.fyi.json')
   return 0
 
 if __name__ == "__main__":
   sys.exit(main())