This test, as written, is invalid on platforms which use function
descriptors.

See https://codereview.chromium.org/1377423002/ for background.

R=mstarzinger@chromium.org, titzer@chromium.org, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1438803002

Cr-Commit-Position: refs/heads/master@{#31967}