StorageStub needs to sync with an existing store's reference mode (#3352)
StorageStub needs to sync with an existing store's reference mode (#3352)


PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs