Revert of Gardening: fast/workers/worker-multi-startup.html is crashing on Linux (https://codereview.chromium.org/226653003/)

Reason for revert:
passes again

Original issue's description:
> Gardening: fast/workers/worker-multi-startup.html is crashing on Linux
> 
> Appears to be from a v8 roll.
> 
> TBR=dcarney@chromium.org
> BUG=362146
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=171291

TBR=dcarney@chromium.org,leviw@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=362146

Review URL: https://codereview.chromium.org/236773002

git-svn-id: svn://svn.chromium.org/blink/trunk@171428 bbb929c8-8fbe-4397-9dbb-9b2b20218538