So now there are no frogs in Asia?
My goodness, I am truly surprised. Everything I've ever read or seen stated that there were certainly frogs there. I even know people personally who have said that they themselves had seen frogs in Asia.
I guess you just can't trust anyone.
OP, your frogs may or may not survive. The snake may or may not eat them. Frogs aren't the best diet for burms and there is a chance of some transfer of organisms that would negatively affect your snake.
Plus, a lot of treefrogs are nocturnal. You'll never see them. It sounds really easy, and it is, but the effect you're looking for may be missing.
If it's activity you want in there, fill it with frogs and geckos.