Viewing Google Chrome (v69+) Cache on macOS?
Both chrome://cache and chrome://view-http-cache have been removed starting chrome 66.
You can find them in
~/Library/Caches/Google/Chrome/Default 

All you Chrome activity is saved here chrome://chrome-urls/. I just visited Imgur to test and open a image and found this in the chrome://history/.
When you click on it it opens it:

It supposedly keeps the history for 90 Days, but have not tested that.