Merge "Subtle improvements to notification logging." into tm-qpr-dev am: cdba1eef

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19087726



Change-Id: I42f5e2dd4cd7c71a67964552a73c887b2dd9a4b5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>