Comment 1 for bug 1159980

this should be easy to add.

selenium has and `add_cookie` method we can use.

----

add_cookie(self, cookie_dict)

Adds a cookie to your current session.

:Args:
 - cookie_dict: A dictionary object, with required keys - "name" and "value";
    optional keys - "path", "domain", "secure", "expiry"

Usage:
    driver.add_cookie({'name' : 'foo', 'value' : 'bar'})
    driver.add_cookie({'name' : 'foo', 'value' : 'bar', 'path' : '/'})
    driver.add_cookie({'name' : 'foo', 'value' : 'bar', 'path' : '/', 'secure':True})