I found that PPD. It is in a post on Reddit by PuzzleheadedYak9388 from April. He provides a link to his Dropbox with the PPD and a PDF help file as well. Hope that helps.
Sorry, I'm not going to be much help. Not sure where that file is if I have it at all. I think what I did was follow the instructions by shadowsports posted on 12/13/20 and then followed what mc2021 posted on 3/11/21. That got my printer working, but...
Thank you SO much! Found your Reddit post and downloaded the PPD (and I don't even know what one is!). Followed directions and can now print on my new chromebook! No longer thinking about a new non-Canon printer. I do not understand Canon leaving us...
