Merge "Add warning for a known issue in a newly added API" into sc-qpr1-dev...

Merge "Add warning for a known issue in a newly added API" into sc-qpr1-dev am: 697c7a81 am: 6f246f6f am: 9118763b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15583141

Change-Id: I8e55154874d77c6789fb1d9644026ed2ee1afd4b