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

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

Change-Id: I1baeb73f3129fa23579e72a7ce0d16724fcffc20