This allows zlib to be overwritten in blaze.

No-Try: true
Bug: v8:11234
Change-Id: Id858076a4b744fdade7f6a23646d2d78d33723a7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2993031
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75422}