Merge "Make libfutures available to DnsResolver" am: 197de3f937 am: 8761d9075f am: 401211bf30 am: 49ab870bed

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/futures/+/1742081

Change-Id: I945df391e2a62c5cce1b97bb0ead2d81c5e9394f