Merge "rust: add conversion between sync and async interfaces" am: 26a735ae...

Merge "rust: add conversion between sync and async interfaces" am: 26a735ae am: bd26e59d am: 45ba1184

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1900390

Change-Id: Ie4a20217dff02a0c1e8af519b1143947840421ca