Comment 181 for bug 113201

yeah, i suppose adjusting it to 4 is fine - it's (i hope!) an implementation detail as to how many requests are generated for a load. though biesi should probably confirm that this behavior is okay, and not bad in other ways.

a more robust way to write the test might be to pull the request URI from the channel on each firing of "http-on-modify-request", and compare it against an expected list. but r=me for making it 4, as long as you add a comment in the .js explaining why we expect twice the calls.