Merge "Read flag to show/hide notification slider" into tm-qpr-dev am: 2552ae08 am: 6b156be2

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/20180104



Change-Id: I627b34d216c6e5139d49bc44830b36c3927eb502
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>