The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/336adf22ca7ddbc7c98807078a014bc882b2232c

commit 336adf22ca7ddbc7c98807078a014bc882b2232c
Author: Shubhie Panicker <panicker@chromium.org>
Date: Wed Aug 08 00:13:36 2018

Add benchmark for worker round-trip.

This includes 2 thread hops, 2 serialize, 2 deserialize:
serialize + hop-to-worker + deserialize + serialize +
hop-to-main + deserialize.

Bug: 870041
Change-Id: I324ba46f09ab18522e51430c6d58c4f07001bc74
Reviewed-on: https://chromium-review.googlesource.com/1159321
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Commit-Queue: Shubhie Panicker <panicker@chromium.org>
Cr-Commit-Position: refs/heads/master@{#581407}
[modify] https://crrev.com/336adf22ca7ddbc7c98807078a014bc882b2232c/third_party/blink/perf_tests/bindings/resources/structured-clone-perf-test.js
[add] https://crrev.com/336adf22ca7ddbc7c98807078a014bc882b2232c/third_party/blink/perf_tests/bindings/resources/worker-structured-clone-perf-test.js
[add] https://crrev.com/336adf22ca7ddbc7c98807078a014bc882b2232c/third_party/blink/perf_tests/bindings/worker-structured-clone-json-roundtrip.html
[modify] https://crrev.com/336adf22ca7ddbc7c98807078a014bc882b2232c/third_party/blink/perf_tests/bindings/worker-structured-clone-json-serialize.html