GitLab

Adds an enabled expirement for the Heavy Ads Intervention.

Change-Id: Icf8f645fb171f2d97568915bae595e23910dc5dd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2300262Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
Commit-Queue: John Delaney <johnidel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#788736}