Merge "Animate screenshot dismiss button appearance" into rvc-dev am:...

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

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

Change-Id: I241eb6d5870c8a5ce74c6996b3347629eff8d58c