If you want to fix this, you'll need to look at https://cs.chromium.org/chromium/src/components/omnibox/browser/autocomplete_input.cc?rcl=0&l=414 .  Presumably the filesystem-specific bit at the bottom needs to add a blob-related check.  The only reason I'm not making this change myself is that I don't really understand either one of these schemes and can't vouch for whether this is desirable from a security perspective.  If someone else wants to do this, I can r+ the (should be very simple) change.

(fyi test page is timing out)

> (fyi test page is timing out)

Yeah, I broke the site :/ Please try this: https://storage.googleapis.com/www.meacer.com/filesystem.html

FWIW I looked at this briefly the other day, and changing AutocompleteInput::ParseForEmphasizeComponents wasn't sufficient because Parse() doesn't parse blob urls properly. It looks like we'll need changes in url_fixer since it has a special case for filesystem URLs.