[w3c/FileAPI] Consider reserializing type attributes, not just parsing them. (#123)

While working on Gecko's Fetch compliance, I noted that there are web platform tests which fail because they expect blob types to be passed through the MIME Sniffing standard's serialization. @annevk suggested that there may have been discussions on doing this reserialization, so I'm filing a bug to verify that option.

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/w3c/FileAPI/issues/123