Avoid the case where the application runs behind an initial limit that grows in
the case where the heap is not yet configured.

Bug: chromium:924180
Change-Id: I45184f95cb00d65469574bdc40d4596ef50d9c60
Reviewed-on: https://chromium-review.googlesource.com/c/1426960Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59010}