GitLab

Note that this CL depends on a V8 CL that implements binary version 0xC for WASM,
which will land momentarily.

R=titzer@chromium.org,jochen@chromium.org
BUG=chromium:575167, chromium:650655

Review-Url: https://codereview.chromium.org/2370963003
Cr-Commit-Position: refs/heads/master@{#421312}