1648513 - Convert the about:home startup cache mechanism to JSProcessActors

Status: NEW

(Firefox :: New Tab Page, task, P3)

Description

[Mike Conley (:mconley) (:⚙️)]

The about:home startup cache mechanism uses the process message manager to enable communications between the parent process and the privileged about content process. This was because, at the time of its writing, JSProcessActors did not exist.

JSProcessActors now exist. We should convert the mechanism to use JSProcessActors, as more and more of Firefox is transitioning to the actor messaging model.

Comment 1

[Chris Peterson [:cpeterson]]

I assume this work is to support Fission so tracking for Fission M6c Nightly

Comment 2

[Mike Conley (:mconley) (:⚙️)]

Unless we're planning on removing the process message manager in the near term, then I don't think this blocks Fission in Nightly. The old process message manager mechanism will still work even with Fission enabled. This is more of a future-proofing thing.

Comment 3

[Chris Peterson [:cpeterson]]

(In reply to Mike Conley (:mconley) (:⚙️) from comment #2)

Unless we're planning on removing the process message manager in the near term, then I don't think this blocks Fission in Nightly. The old process message manager mechanism will still work even with Fission enabled. This is more of a future-proofing thing.

Thanks for the correction. I'll move this bug.