[automerger skipped] SurfaceControl: Add setDropInputMode api am: 77daf700ce am: d5a65ea539 -s ours am: bff6651eb5 -s ours am: f83cc9ba51 -s ours

am skip reason: Merged-In I443741d5ab51a45d37fb865f11c433c436d96c1e with SHA-1 50c735592e is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/16740114

Change-Id: I8172b6853d94a04474bbf7d650112917a2afa564