Merge "Clarify reasons for notification removal." into udc-dev am: ebf1af85...

Merge "Clarify reasons for notification removal." into udc-dev am: ebf1af85 am: b39bfaf3 am: 276d752a am: 4e22023f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24211145



Change-Id: Ide90ccd3f587e12ef7b5ab3a5e52cfa82fbe6b96
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>