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

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



Change-Id: I9180429d656ce01f6c170cbaaba84e547ee33e6d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>