Bug970187, Bug970187, CDMA-3way calls

It correspondence of reviews.
https://github.com/mozilla-b2g/gaia/pull/19976

https://bugzilla.mozilla.org/show_bug.cgi?id=970187
Why don't you use some mock calls instead? It would be more consistent with the rest of the code, e.g.:

https://github.com/mozilla-b2g/gaia/blob/master/apps/callscreen/test/unit/calls_handler_test.js#L1558