Merge "Clarify doc for users, clarifying profiles" into rvc-dev am: d41aca10 am: feeb4ab1

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11889023

Change-Id: I13ab7c1e8d2f9e798d6af423bb44c4800bf0f1d5