I don't even know why someone would want to do that but it will take a lot more than just a barrel change. 10mm is a high pressure load so the recoil spring will have to be replaced and I don't know how the barrel will want to fit right with existing bushing so that will have to be replaced as well. Being I don't know of you will find a bushing to fit right with the original slide now you are looking at one of those too. I think I'd just go find a 10mm. I'm not a fan of the round personally but they do have their fans
Forget about it. You'd also need a new extractor (that is, a new slide), and a new ejector (that is, a new frame), as well as new springs and magazines. In other words, it's not practical, it's not gonna happen. You need a whole new pistol.
The one exception was the Springfield Omega (based on a German design), that used a tricky double extractor. Apart from that, though, fuggeddaboudit.