These will soon be used to store cached OSR code.

Bug: v8:12161
Change-Id: I49b6f1cd648e1fd033ac09b2e590bc185f5461e7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3596165
Commit-Queue: Jakob Linke <jgruber@chromium.org>
Auto-Submit: Jakob Linke <jgruber@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80045}