A version of the Into<T> trait from the standard library that can be used
to convert between two types that are not defined in the script crate.
This is intended to be used on dict/enum types generated from WebIDL once
those types are moved out of the script crate.
A version of the TryInto<T> trait from the standard library that can be used
to convert between two types that are not defined in the script crate.
This is intended to be used on dict/enum types generated from WebIDL once
those types are moved out of the script crate.