They're  enabled via the chromium_code config already these days.
No intended behavior change.

Bug: chromium:926235,chromium:428099
Change-Id: I4f7024ab78cb9672ec3db686e0155b2d835a4790
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1564694Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Auto-Submit: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60812}