This reverts commit 58020872.

Reason for revert: Turned out to be a bot issue, reverting the revert. 

Original change's description:
> Revert "[global-handles] Remove dead code"
> 
> This reverts commit e2890c19.
> 
> Reason for revert: Looks like this CL causes slowdown on multiple builders, Check tests timeout and raise exceptions on the bot. Possible it is a bot issue as well, see tracking bug - https://bugs.chromium.org/p/chromium/issues/detail?id=720606
> 
> Original change's description:
> > [global-handles] Remove dead code
> > 
> > Bug: chromium:720477
> > Change-Id: I090168c575c41b7038af5dfba6cd8973d1154c51
> > Reviewed-on: https://chromium-review.googlesource.com/501790
> > Reviewed-by: Hannes Payer <hpayer@chromium.org>
> > Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#45241}
> 
> TBR=hpayer@chromium.org,mlippautz@chromium.org,jochen@chromium.org
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> Bug: chromium:720477
> 
> Change-Id: I92f40d8c4dbfdb5208b3068648612e8c5b97fb20
> Reviewed-on: https://chromium-review.googlesource.com/502029
> Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
> Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#45243}

TBR=hpayer@chromium.org,gdeepti@chromium.org,mlippautz@chromium.org,jochen@chromium.org,v8-reviews@googlegroups.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Bug: chromium:720477

Change-Id: I70e190e0c27074228a8128aa849e5a419af915e8
Reviewed-on: https://chromium-review.googlesource.com/502030Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45244}