Set info .doneProto in exprFor
Set info .doneProto in exprFor

Since the logic is the same in each case, factor setting .doneProto out of the individual Dumper.prototype.exprFor<Type> methods and move ti to Dumper.p.exprFor.

NeilFraser/CodeCity,google/CodeCity,google/CodeCity,google/CodeCity,NeilFraser/CodeCity,google/CodeCity,NeilFraser/CodeCity,NeilFraser/CodeCity