LUCI + test configurations for mac-cocoa-rel.

Bug: 855301
Change-Id: I2a632402934b865ecc2b87c30262261a0e7d274d
Reviewed-on: https://chromium-review.googlesource.com/1117363
Reviewed-by: Stephen Martinis <[email protected]>
Commit-Queue: John Budorick <[email protected]>
Cr-Commit-Position: refs/heads/master@{#570925}
diff --git a/testing/buildbot/test_suite_exceptions.pyl b/testing/buildbot/test_suite_exceptions.pyl
index 5b3242c9..d327120a3 100644
--- a/testing/buildbot/test_suite_exceptions.pyl
+++ b/testing/buildbot/test_suite_exceptions.pyl
@@ -293,6 +293,22 @@
           ],
         },
       },
+      'mac-cocoa-rel': {
+        # A subset of tests seem to cause WindowServer deaths on VMs.
+        # crbug.com/828031 et al.
+        'args': [
+          '--test-launcher-filter-file=../../testing/buildbot/filters/mac_window_server_killers.browser_tests.filter',
+          '--gtest_shuffle',
+        ],
+        'swarming': {
+          'dimension_sets': [
+            {
+              'pool': 'Chrome-quarantine',
+              'gpu': 'none',
+            },
+          ],
+        },
+      },
       # chromium.memory
       'Linux ASan LSan Tests (1)': {
         # These are very slow on the ASAN trybot for some reason.