Merge "Logging when QSFragment becomes visible/invisible" into tm-qpr-dev am: f16d022a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21464745



Change-Id: I1b120def424355165f38fc2a50f1032ab6c97dfe
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>