Merge "Send update config change when letterbox is moved" into tm-qpr-dev am: e0128e1b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23351139



Change-Id: Ibe84c4c2de1b9acc5e34432a4ddb21e4d7db0aee
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>