Within the last month on my mint laptop chromium has been complaining about needing to be updated, and it disabled the plugin.

The manual update process is kind of a pain and to be honest and I had just not gotten around to doing the update. On a whim I decided to try and see if there was a way to do the update via apt-get instead of the manual install procedure and I found it

apt-get install flashplugin-nonfree

It updated the plugin in chromium as well … yay flash works again