Add driver log for mac to debug flaky tests.

Enable the driver log to debug the crbug.com/1479108.
Will remove this option after the debugging is complete.

Bug: 1479108
Change-Id: Ifcc3103f2700ecfcdf91f25e1119c8b107e681e8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5066726
Commit-Queue: Jie Sheng <[email protected]>
Reviewed-by: Zhaoyang Li <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1230300}
diff --git a/testing/buildbot/test_suite_exceptions.pyl b/testing/buildbot/test_suite_exceptions.pyl
index 24bbda85..c36955a 100644
--- a/testing/buildbot/test_suite_exceptions.pyl
+++ b/testing/buildbot/test_suite_exceptions.pyl
@@ -349,6 +349,10 @@
         },
       },
       'Mac12 Tests': {
+        # TODO(crbug.com/1479108): Remove this once the bug is fixed.
+        'args': [
+          '--driver-logging',
+        ],
         'swarming': {
           'dimensions': {
             'gpu': None,
@@ -598,6 +602,11 @@
           'hard_timeout': 2400,
         },
       },
+      'mac12-arm64-rel-tests': {
+        'args': [
+          '--driver-logging',
+        ],
+      },
       'mac12.0-blink-rel': {
         'swarming': {
           'hard_timeout': 2400,
@@ -696,6 +705,9 @@
         },
       },
       'Mac12 Tests': {
+        'args': [
+          '--driver-logging',
+        ],
         'swarming': {
           'dimensions': {
             'gpu': None,
@@ -916,6 +928,11 @@
           'hard_timeout': 2400,
         },
       },
+      'mac12-arm64-rel-tests': {
+        'args': [
+          '--driver-logging',
+        ],
+      },
       'mac12.0-blink-rel': {
         'swarming': {
           'hard_timeout': 2400,