The notification is only used for testing and benchmarking purposes.
Announcing low memory is usually done using MemoryPressure API.

Bug: chromium:843903
Change-Id: I998018f7f5f3a0d06283aa6010228a9c86f12c39
Reviewed-on: https://chromium-review.googlesource.com/c/1269037Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56454}