Merge "Notify display brightness changed due to brightness transforms" into...

Merge "Notify display brightness changed due to brightness transforms" into sc-v2-dev am: 272775d3 am: be0e6017

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16391518

Change-Id: I23af1e797dd11839b938123209821f821bc14d4b