Merge "[layertracegenerator] stream layer trace to file" into udc-dev am: 30cdab74 am: 8c96c96c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/22090398



Change-Id: I91c0fa065b114006e2608482cc1e8f7e5f92551f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>