Merge "Post a silent notification if screenshot is dismissed" into rvc-dev am:...

Merge "Post a silent notification if screenshot is dismissed" into rvc-dev am: 18bb8d11 am: 46cf5499 am: af09625e am: 3268066d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11809243

Change-Id: Ibd59d30b42b7e139044f6259b44008622afd17b0