util_test Clock.SleepNanoseconds: don’t set an upper bound for the amount of time spent sleeping.
util_test Clock.SleepNanoseconds: don’t set an upper bound for the
amount of time spent sleeping.

Even with the slop, this wound up being flaky, specifically on virtual
machines. And guess what our automated test infrastructure runs on?

TEST=util_test Clock.SleepNanoseconds
R=rsesek@chromium.org

Review URL: https://codereview.chromium.org/640373003

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