There was no problem with the original CL. I just had a problem with
my local git branches.

Original message:

The implementation on wasm-bigint has been done, as far as I can tell.
There are no spec tests yet, only an out-dated copy of the original
spec tests which don't pass anymore. Therefore I disabled all the tests
for now and created a tracking bug at https://crbug.com/v8/9673.

TBR=adamk@chromium.org

Bug: v8:7741, v8:9673
Change-Id: Ida7ccda4547cf3fdcdff151d8b02946b7aa534ca
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1787420Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63575}