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: fb1ada41 am: 36a6e22b am: 5a85f7f7

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

Change-Id: I497fbcf7a134135477bd21afcf37bb6e2a2f596e