It's not a camera but I had a cell-phone go through the washing machine while it was turned on. I took it out and dried it, without joy. Then it sat on top of the tv for a year or so with the back off. I was visiting my mum and on a whim, I turned it on. Hey presto... it came back to life.
So maybe all is not lost. I'd put some silica gel into all the compartments you can get access to (incuding under the mirror, put it in a plastic bag and leave it somewhere warm for a while. The worst that can happen is that nothing happens.