Allow mocking the limits for ArrayBuffer allocation to simulate operating
system OOM.

Bug: chromium:845409
Change-Id: I38bf56a3677e1db547c774223c81e913f56cb631
Reviewed-on: https://chromium-review.googlesource.com/1203895Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55616}