Message that gets passed to service worker scope on postMessage
An iframe sizing operation.
Channels to allow service worker manager to communicate with constellation and resource thread
Entities required to spawn service workers


Whether a DOM event was prevented by web content
The kind of error the job promise should be rejected with.
Messages sent from Job algorithms steps running in the SW manager, in order to resolve or reject the job promise.
Jobs are resolved with the help of various values.
Messages from the layout to the constellation.
A log entry reported to the constellation We don’t report all log entries, just serious ones. We need a separate type for this because LogLevel isn’t serializable.
Messages outgoing from the Service Worker Manager thread to constellation
Messages from the script to the constellation.
Messages sent to Service Worker Manager thread