[automerger skipped] Merge "inputflinger: add missing <functional> include" into udc-qpr-dev-plus-aosp am: b1778b0af1 -s ours

am skip reason: Merged-In Ieb7828b26613c3b5470c9b76f31ad1b6b09d9445 with SHA-1 2aef464f72 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/24869006

Change-Id: I355c9a67bb5a78ab9220d2bd67d83df82d7abf6b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>