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

Merge "Animate screenshot dismiss button appearance" into rvc-dev am: 0d3440f4 am: d9fffd42 am: fbd93130

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

Change-Id: Iec8a36f2861e30a350dd1a8a4ac4d1d763ef848a