Merge "Output a tracing instant when device state changes." into tm-qpr-dev am: c5c9c917

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18661009



Change-Id: Id68483b2cdd4e958a63148299e94a57b243c3077
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>