[On-device adaptive brightness] Change default params

This CL changes the following params, all targeting atlas
1. Brightness transitioning thresholds.
2. Model training delay.
3. Default user adjustment effect is set to continue for atlas.

They can still be configured from finch.

Bug: 881215
Change-Id: Id9ac6db7933719a0f2c6a76c1059b7b5fe3a5d1e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1522048
Reviewed-by: Andrew Moylan <amoylan@chromium.org>
Commit-Queue: Jia Meng <jiameng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#640611}
5 files changed