ExtensionContext in Extension.jsm has |extension| as an instance member,
so use it instead of passing |extension| to registerSchemaAPI's
callback.
And to make sure that this pattern also works in content processes, move
the |extension| member to BaseContext.
MozReview-Commit-ID: BgsGGCPQxJR
--HG--
extra : rebase_source : 7aa9fb7a53e057e8d3d8c477bd6821f8344c571a
ExtensionContext in Extension.jsm has |extension| as an instance member,
so use it instead of passing |extension| to registerSchemaAPI's
callback.
And to make sure that this pattern also works in content processes, move
the |extension| member to BaseContext.
MozReview-Commit-ID: BgsGGCPQxJR
--HG--
extra : rebase_source : 9a85d95f0c147198938b86c57127f6e7403fd53c