Won't help in this case.

I don't know what you're saying. If you're saying that the "Secure" flag won't defend against CRIME, nobody is saying that. I'm saying that the "Secure" flag and HSTS mitigates SSL-stripping.

I think both ivanr and thatwonthelp were suggesting that any non-secure site (same origin or not) can be hijacked in order to make the requests necessary for this attack.

I understand and agree with your comment about the secure flag, but if I understood ivanr's comment it doesn't apply.

Oddly, GP's account was made for the purpose of writing that comment. I'm unsure what that means.