I'll be honest- I don't do anything more than casual playthroughs of Pokemon games, so I actually had to look up what you meant by that, but no, I don't believe I've got a Froakie with the Protean ability.
If I were you, I would try making a new thread in the Quick Trades board. It looks like you had one there in the past, and a few people were willing to help you out with getting one, but you never responded to the thread again. There are a lot of helpful people over there though, so someone should be happy to help you out (just don't be surprised if things might be a bit slower with Sun and Moon now coming out).
Best of luck in getting your Froakie!