Merge "Revert "Revert "Restore support for source hint rect""" into rvc-dev am: e5e4c105 am: 6f9594b6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11819193

Change-Id: Ie853e43f8b93884bfcc72a9ccd1ac377a6c2a782