Wrong referrer policy used in cors_preflight_request

[jdm]

The specification for step 1 says we should use request's referrer policy. There's an obvious copy/paste typo that uses the default request policy for the new preflight variable instead.

Code: components/net/fetch/methods.rs
Test: modify test_cors_preflight_fetch in tests/unit/net/fetch.rs by setting the original referrer policy used to origin and setting a URL referrer a path (a.html), and checking that the referrer header that the server receives does not contain the path. Run the test with ./mach test-unit -p net.

[wdv4758h]

I'll take this 😄

[jdm]

Go for it! Ask questions if anything is unclear!

[shinglyu]

@jdm: So by setting the policy as origin, a Referrer URL foo.com/a.html will become foo.com in the header, right?

[jdm]

@shinglyu: Exactly.