Enable ServiceWorkerPerfTest (service_worker.service_worker)
Enable ServiceWorkerPerfTest (service_worker.service_worker)

I think https://codereview.chromium.org/884573004/ fixed the ServiceWorker test flakiness.

BUG=433943
TEST=./tools/perf/run_benchmark --browser-executable=~/chromium/src/out/Debug/chrome --also-run-disabled-tests service_worker.service_worker

Review URL: https://codereview.chromium.org/954663002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#317807}

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