Merge "Move kids mode relative logic to wm shell" into tm-dev am: b9109dd6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17903530



Change-Id: Ice17e5ace9e090a6fd0e99fad488c518b1498a7a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>