Implement addCountAnd{Pass|Drop}IfBytesAtR0Equal() methods am: 898c9cd15f am: a7e6db1f1a

Original change: https://android-review.googlesource.com/c/platform/packages/modules/NetworkStack/+/3120115

Change-Id: I64d5e4e3719c462aac3d27aef5d9c44fa4e54809
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>