Merge "Animate screenshot dismiss button appearance" into rvc-dev am: 0d3440f4 am: 44a728b3 am: fbb37fc4 am: a3de852b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11811380

Change-Id: Ib88435ec33f4f3e0725e58509774cb540acb63df