Revert of Replaced different means of zone pooling/reusing by one zone segment pool (patchset #5 id:160001 of https://codereview.chromium.org/2348303002/ )

Reason for revert:
related to roll blocker: https://codereview.chromium.org/2400343002/

Original issue's description:
> Replaced different means of zone pooling/reusing by one zone segment pool
>
> BUG=v8:5409
>
> Committed: https://crrev.com/a124feb0760896c8be61de08004a08c3bc9b4b3f
> Committed: https://crrev.com/fc840361e357a571c709e0239ae82cc089800b3f
> Cr-Original-Commit-Position: refs/heads/master@{#39633}
> Cr-Commit-Position: refs/heads/master@{#40048}

TBR=mstarzinger@chromium.org,verwaest@chromium.org,heimbuef@google.com
NOTRY=true
NOPRESUBMIT=true
NOTREECHECKS=true
BUG=v8:5409

Review-Url: https://codereview.chromium.org/2401163002
Cr-Commit-Position: refs/heads/master@{#40099}