I have my Pi3 running Jessie 8 set to boot Chromium into Kiosk mode calling a web published Google slide show and it works correctly as it did with Wheezy. The next step is to refresh the web page every 15 minutes to load any changes that have been made to the slide show. In the past I added a cronjob to call a script which used xdotool to execute "Ctrl+F5" keys. I have the cronjob running and it will call the refresh.sh file but it will not send the key command for refresh.
My refresh.sh file code is attached below
#refresh chromium export DISPLAY=:0.0 xdotool key "ctrl+F5"