带有jQuery.ajax（）的CORS

Firefox seems to be preventing this request, while Chrome is processing it fine. What am I doing wrong?

http://jsfiddle.net/e8qu2g9j/1/

$.ajax({
    url: "http://maps.googleapis.com/maps/api/geocode/json",
    data: {
        bounds: "-35.2545,149.4947|-31.9955,152.5728",
        region: "au",
        components: "country:AU|administrative_area:NSW",
        address: "Central Station"
    }
});

I've tried adding:

crossDomain: true,
xhrFields: {
    mozAnon: true,
    mozSystem: true
},

but to no avail.

Firefox 31.0 keeps giving me:

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://maps.googleapis.com/maps/api/geocode/json?bounds=-35.2545%2C149.4947%7C-31.9955%2C152.5728&region=au&components=country%3AAU%7Cadministrative_area%3ANSW&address=Central+Station. This can be fixed by moving the resource to the same domain or enabling CORS.

EDIT: This is working fine for me in a new firefox profile, but not my main one. What setting could I have changed?

Disable the HTTPS everywhere plugin.

https://bugzilla.mozilla.org/show_bug.cgi?id=692843