That particular sentence does not describe "tracking", it describes "http". Those are just the data every browser sends to a server if it requests a resource ho

That particular sentence does not describe "tracking", it describes "http". Those are just the data every browser sends to a server if it requests a resource hosted there. The sentence you cited is just a description of the behaviour of the protocol. Tracking only happens if the server logs these data, which it may or may not do, and the rest of the facebook privacy policy seems to say that they indeed want to do that, or at least keep the option to do so. But no matter what the server operator says it does, you cannot really check that.