He won't. This is one record he won't be able to get anymore, especially after what we saw in the U.S. Open, running out of gas in those two sets. It's going to be ridiculously tough unless Djokovic/Nadal under so some injuries and withdrawals from the slams.
Federer did not ran out of gas , just a mental break down .
He had 2 match points on his own serve and Djokovic went for broke and got lucky .
Repeat that scenario 9 more times and Federer wins them all .
if he had ran out of gas he would been blown out on that last set like Delpo in 2009