sigh: hide unactionable deprecation warnings from npm modules (#2279)
sigh: hide unactionable deprecation warnings from npm modules (#2279)


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