Revert of fix bad rebase in r27966 (patchset #1 id:1 of https://codereview.chromium.org/1083923005/)

Reason for revert:
Needed to revert https://chromium.googlesource.com/v8/v8/+/7bcc3d10835105fadc8ecf42a877dec479f0f80d

Original issue's description:
> fix bad rebase in r27966
>
> TBR=verwaest@chromium.org
>
> BUG=

TBR=verwaest@chromium.org,dcarney@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1093043003

Cr-Commit-Position: refs/heads/master@{#27981}