Merge "Fix letterbox issue when auto-enter-pip from landscape" into sc-v2-dev...

Merge "Fix letterbox issue when auto-enter-pip from landscape" into sc-v2-dev am: 109a5be4 am: 45f528dd

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15275746

Change-Id: Idbc7d08d54d0f102bb76032681155aeee729768a