If you have unlocked these characters, a full Chirrut Imwe equals 25 shards. A full Jyn Erso equals 32.
Jyn Erso 42 shards / 5 packs
Chirrut Imwe 35 shards / 5 packs
Cassian Andor 10 shards / 5 packs
Sorry I am missing one pic but I recorded in writing as I opened.
Overall, Chromium drops for the Rogue One characters not already in the packs before this update seem low. I four starred Chirrut though which was my main goal, so I was happy.