02599e58ae
Clone latency.dart into the benchmark from EventLoopLatencyJson Change-Id: I92090b4decf49e67b937d8095bb7c36adf79c509 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/210430 Reviewed-by: Martin Kustermann <kustermann@google.com> Commit-Queue: Alexander Aprelev <aam@google.com>