That appears to belong to the Chromium Embedded Framework...
https://en.wikipedia.org/wiki/Chromium_Embedded_Framework
It may the case that one of your plugins is employing that framework for it's GUI or something similar, not sure, or it's otherwise in use on your system in some way, so if you have plugins on the fx returns when you see that error or crash you might want to disable or turn them off in series to see which one stops the error and then inquire to the vendor about that particular error.
