[perf] Tighten up buttons.
[perf] Tighten up buttons.

Change-Id: I6f3d81b8c36e5588c9ba056073dd6d44226a4d3f
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/302281
Reviewed-by: Joe Gregorio <b9cf2471ff6d33504cafe8e6f356b732b2cadced@google.com>

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot