Store protected instruction info needed for the wasm trap handler.
This code will be used and covered by existing tests once we add support
for if-constructs to Liftoff.

R=titzer@chromium.org
CC=eholk@chromium.org

Bug: v8:6600, v8:5277
Change-Id: I508b0ab8572ef8b5c7943564714fcec7e9eb8e3b
Reviewed-on: https://chromium-review.googlesource.com/853497
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Eric Holk <eholk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50425}