Merge "introduce BpfClassic.h" am: ae0f3e13c9

Original change: https://android-review.googlesource.com/c/platform/frameworks/libs/net/+/2482401

Change-Id: I36375e33596407062c742c5ff4e0472741827f81
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>