Disable SyncUIUtilTest.DistinctCasesReportUniqueMessageSets

TBR=bsep@chromium.org

Bug: 954365
Change-Id: I74b47e8506392864146d7e94b1497a5990b12d7e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1575018
Reviewed-by: Chan Li <chanli@chromium.org>
Commit-Queue: Chan Li <chanli@chromium.org>
Cr-Commit-Position: refs/heads/master@{#652415}
1 file changed