DLP internet browsers extension have "allow access to file urls" feature to turn on/off in the extension's details page. You would like to know the function of this feature.
DLP
It's a common feature available in almost all the extension available in the extension stores. When we "Allow Access to File URLs" to an extension, it means we are giving permission to the extension so that it can read, modify and write files in the computer.
This option is turned off by default.