[automerger skipped] SurfaceControl: Add setDropInputMode api am: 122c4d2da0 am: 0c3407429e -s ours am: dc0120ff41 -s ours am: 27cc85f3f3 -s ours

am skip reason: Merged-In I443741d5ab51a45d37fb865f11c433c436d96c1e with SHA-1 77daf700ce is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/16508592

Change-Id: Id695dbdde15afc6d821a79c0be1fb61f9a499566