They are replaced by
- Memory.Experimental.Renderer2.V8
- Memory.Experimental.Renderer2.V8.AllocatedObjects

Bug: chromium:852415
Change-Id: I64285e5067304319acadc0d64a05aa553d8ae6e0
Reviewed-on: https://chromium-review.googlesource.com/1101197
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54444}