Rolling v8/third_party/google_benchmark/src: https://chromium.googlesource.com/external/github.com/google/benchmark/+log/60b16f1..74ae567

Small optimization to counter map management (#1382) (Dominic Hamon)
https://chromium.googlesource.com/external/github.com/google/benchmark/+/74ae567

getting sysinfo in line with Google style (#1381) (Dominic Hamon)
https://chromium.googlesource.com/external/github.com/google/benchmark/+/3eac3b6

R=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com,mlippautz@chromium.org

Change-Id: Ib4510c2c1d98faf9d8f7a4684b93768d1ecc34e1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3577235
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