This adds the XMLHttpRequest::open(String, String, bool, String, String)
overload.
The following FIXMEs has been implemented:
- If method is not a method, then throw a "SyntaxError" DOMException.
- If the username argument is not null, set the username given parsedURL
and username.
- If the password argument is not null, set the password given parsedURL
and password.
- Set this’s synchronous flag if async is false; otherwise unset this’s
synchronous flag.
Spec comments has also been updated.