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: I6c869b9b9a76dc40c844a00b2353df4d6c6a6c33
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>