Add driver log to mac-rel for wpt tests


Bug: 1379121
Change-Id: I86821098e0f1e997f10ed8bc46ff345ab1c42647
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4021015
Reviewed-by: Zhaoyang Li <[email protected]>
Commit-Queue: Jie Sheng <[email protected]>
Reviewed-by: Weizhong Xia <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1071642}
diff --git a/testing/buildbot/test_suite_exceptions.pyl b/testing/buildbot/test_suite_exceptions.pyl
index 89acb6f..3bfccf7 100644
--- a/testing/buildbot/test_suite_exceptions.pyl
+++ b/testing/buildbot/test_suite_exceptions.pyl
@@ -608,6 +608,9 @@
         },
       },
       'Mac12 Tests': {
+        'args': [
+          '--driver-logging',
+        ],
         'swarming': {
           'dimension_sets': [
             {