Merge "Looper: Add sysprop for verbose slow message logging" into main am: c5677bfc

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2973493



Change-Id: I376c577365768aaf7666727ecb5e797b8682b8fe
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>