Merge "Validate events before printing them" into udc-dev am: 38a3e0b7 am: de8285ea

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/22790442



Change-Id: Ifc1586b9eebd320f6c60fff7c217f349296213d3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>