Merge "[layertracegenerator] stream layer trace to file" into udc-dev am: 30cdab74 am: 726413c9

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



Change-Id: Ic8cd709d7a83a7c4f76e31f03ce824c50bd7d11e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>