1675850 - Add `MOZ_BACKGROUNDTASKS` build flag for conditionally building background task infrastructure

Status: RESOLVED FIXED

(Toolkit :: Application Update, task)

Description

[Nick Alexander :nalexander [he/him]]

This is just legwork for Bug 1675848. We want to be able to land bits and pieces of the infrastructure for background tasks without having them build.

Comment 1

[Nick Alexander :nalexander [he/him]]

Attachment: Bug 1675850 - Add MOZ_BACKGROUNDTASKS flag, {nsI}BackgroundTasks IDL and class. r?Mossop!,mhentges!

This adds a build flag (defaulting to on in Nightly builds), an
AppConstants definition, and a tiny bit of scaffolding for running in
"background tasks" mode -- just enough to write some tests in future
tickets.

Comment 2

[Nick Alexander :nalexander [he/him]]

Attachment: Bug 1675850 - Add {nsI}BackgroundTasks IDL and class. r?Mossop

This lays the foundation for managing an active background task. A
singleton, exposed as an XPCOM service, owns the task name and lives
for the life of the application.

This will be wired into the application startup path in future
commits. It's separated to allow the changes to category registration
to come early in the commit sequence.

Depends on D96481

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

There's a r+ patch which didn't land and no activity in this bug for 2 weeks.
:nalexander, could you have a look please?
For more information, please visit auto_nag documentation.

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/a53b4ebb924f
Add MOZ_BACKGROUNDTASKS flag, {nsI}BackgroundTasks IDL and class. r=mossop,firefox-build-system-reviewers,mhentges

Comment 5

[Sandor Molnar[:smolnar]]

https://hg.mozilla.org/mozilla-central/rev/a53b4ebb924f

Comment 6

[Nick Alexander :nalexander [he/him]]

Clearing NI 'cuz I finally got this stack landed!