Merge "Add trace points for showing panels" into tm-qpr-dev am: 9e4022e4

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21144918



Change-Id: Ib1cef6f07fd19ec44ca5d3655124115206754d41
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>