[r=dave-cheney],[bug=1298121] Fixes LP#1298121
[r=dave-cheney],[bug=1298121] Fixes LP#1298121

SeriesToUpload returns a set, not a list, so we can't use DeepEquals to assert an order, use js.SameContents instead to assert that the two sets are equal.

https://codereview.appspot.com/81120043/
reedobrien/store