Merge "Save transition trace in bugreports" into udc-dev am: 3d1609e6 am: 63630e50

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/22335725



Change-Id: I448f357a8673b8e5e89a63a3d536c08ba3f96d1b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>