In order to provide more details context of how client arrived at the unsafe
page, particularly in redirect case, we may have to add more information to
redirect chains including:
- referrer (if any)
- remote address.
- URL
We may want to use an idl interface instead of nsIPrincipal to store these
information
MozReview-Commit-ID: 3Uh4r06w60C
Thomas Nguyen