According to the link, in short, it says to notify your users (assuming you've been keeping track of them via a mailing list) and then posting an uninstall button.
As far as I can tell, there will be no way to programmatically transition users and their IAP outside of your chromeapp. Meaning, we will have to figure out a way to get users to register their purchases to a database.
As far as I can tell, there will be no way to programmatically transition users and their IAP outside of your chromeapp. Meaning, we will have to figure out a way to get users to register their purchases to a database.