How to remove warning message in Chrome when uploading a directory

Question

When uploading a directory using webkitdirectory in Chrome, there is an ugly warning message that appears. The message reads: "Upload [number of files] files to this site? This will upload all files from [directory name]. Only do this if you trust the site."

This started just recently in Chrome version 66.0.3359.139.

Is there a way to prevent this warning message from appearing or to at least prevent it appearing over and over for every upload to the same site?

Answer 1

This prompt is a new security feature.

Previously you could socially engineer a user into holding enter and it uploaded their whole home folder to the attacker site. There is no option or mechanism to skip it.

https://crbug.com/637098