Add support for 'moz-extension' scheme used by Firefox WebExtension code

[jaredhirsch]

Do you want to request a feature or report a bug?

Bug

What is the current behavior?

Code inside Firefox WebExtensions is addressed using the scheme moz-extension. Stack traces containing these URLs aren't parsed properly. Changing the scheme to resource causes the stack to be properly parsed.

What is the expected behavior?

Stacks at moz-extension URLs should be parsed.

Looks like the issue is the analogous with #836, so I'd expect the fix will be analogous with #837. I'll try to find time to open a PR this week.

[benvinegar]

Sounds good.

[ivantsov]

Hey, any progress on the issue?

[dmose]

I added the resource: parsing in https://github.com/getsentry/raven-js/pull/837/files, and I'd expect the patch for this to be very similar, if someone wanted to port it.