Merge "Send update config change when letterbox is moved" into udc-dev am:...

Merge "Send update config change when letterbox is moved" into udc-dev am: 40ae027d am: 8724c53e am: 39da4a78

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22893140



Change-Id: Id596ae7409c728f319467a83d89481100f2c5a15
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>