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The test is also flaky on other platforms:
https://analysis.chromium.org/p/chromium/flake-portal/flakes/occurrences?key=ag9zfmZpbmRpdC1mb3ItbWVybAsSBUZsYWtlImFjaHJvbWl1bUBibGlua193ZWJfdGVzdHNAZXh0ZXJuYWwvd3B0L3BvaW50ZXJldmVudHMvcG9pbnRlcmV2ZW50X2NvYWxlc2NlZF9ldmVudHNfYXR0cmlidXRlcy5odG1sDA

TBR=lanwei@chromium.org

Bug: 1059645
Change-Id: I8563223533cd6445166be5d073f96b3ae013ee56
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2230321Reviewed-by: Yi Gu <yigu@chromium.org>
Commit-Queue: Yi Gu <yigu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#775111}