R=clemensh@chromium.org
TEST=mjsunit/wasm/worker-module

Change-Id: I56c274c67354d534f86312ee8fe7b7761da8ca44
Reviewed-on: https://chromium-review.googlesource.com/1138074Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54456}