Add persistent=true to the Android manifest

Includes persistent=true to the manifest to allow for a
lower oom_adj score when running the browser instance
on Android Things so low memory killer doesn't
incorrectly tear down required processes when under
memory pressure.

Bug: internal
Change-Id: I34e04f8d4485c613fef3187a6e305e17b9e51855
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1653652
Commit-Queue: Simeon Anfinrud <sanfin@chromium.org>
Reviewed-by: Simeon Anfinrud <sanfin@chromium.org>
Auto-Submit: Brett Kilty <brettk@google.com>
Cr-Commit-Position: refs/heads/master@{#668444}
2 files changed