Merge "binder: add missing <functional> include" into main am: 41790fcd7a am: 58f5d91704 am: 2620c6db5e

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2758334

Change-Id: Id303e814f9d81d93dafb91ff58d3ae30a6aee766
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>