The tests deal with recording OLD_TO_SHARED slots during page promotion
(in MinorMC) on a client heap, and retaining the corresponding shared
objects.
These tests cover issues fixed by crrev.com/c/4152485 and
crrev.com/c/4094755 (in the reland, compared to the previously submitted
version).
Bug: v8:12612
Change-Id: I7ba399d56ad75646092e6955f347a210c3dcac6e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4156473
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#85308}