Replace with isolate versions

BUG=v8:7754

Change-Id: I69cf1e0d4cba6d68a3983c0dba346bfc1bfc9619
Reviewed-on: https://chromium-review.googlesource.com/1146182
Commit-Queue: Dan Elphick <delphick@chromium.org>
Reviewed-by: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54607}