Turn on -Werror=strict-prototypes build flag and fix build error am: 910f2bd2e2 am: 3914e02a1e am: 8f46fbba2b Original change: https://android-review.googlesource.com/c/platform/hardware/google/apf/+/2875814 Change-Id: Ib65f1689e2c97b84a82cb15953ba910ffcce0b40 Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>