Require names for all ShapeArguments (#2250)
Require names for all ShapeArguments (#2250)

* Require names for all ShapeArguments

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