Revert of https://codereview.chromium.org/93603003/
Reason for revert: 100 layout tests are crashing on debug builds garden-o-matic blames this patch.  Crash logs look V8 related.

TBR=yurys@chromium.org,aandrey@chromium.org
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/108413005

git-svn-id: svn://svn.chromium.org/blink/trunk@163787 bbb929c8-8fbe-4397-9dbb-9b2b20218538