Merge "Adds content descriptions for rear display animation" into tm-qpr-dev am: 25f93401

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20669619



Change-Id: I28794087dcb354e131bb59c19e2718505a6b0e78
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>