Launch on login support is currently only implemented for Windows. it should be possible on macOS

Implement a macOS interface for adding Login Items (aka LaunchOnLogin) and make a wrapper for LaunchOnLogin that calls the correct OS version.

Port the WindowsDefaultLaunchOnLogin to use the new generic LaunchOnLogin interface

Use the new LaunchOnLogin API to determine if LoL is supported and call the correct OS implementation

f3

Port ASRouter and telemetry code to new LaunchOnLogin API

Rename all the windowsLaunchOnLogin preferences to launchOnLogin and upgrade profiles as the feature is no longer Windows only.

Update to support the DisableLaunchOnLogin enterprise policy

https://hg.mozilla.org/mozilla-central/rev/3ad5398abb37
https://hg.mozilla.org/mozilla-central/rev/dc63d7453f0c
https://hg.mozilla.org/mozilla-central/rev/ac434ea20f03
https://hg.mozilla.org/mozilla-central/rev/6044054d2936
https://hg.mozilla.org/mozilla-central/rev/1802f910a83c

Backed out for causing bc failures at /browser_suppressTips.js
Backout Link
Push with failures
push with failures
Failure Log
Failure line TEST-UNEXPECTED-FAIL | browser/components/urlbar/tests/browser-tips/suppress-tips/browser_suppressTips.js | updateApplied - updateAppliedTime pref should be updated when booting this test - 0 != 0
TEST-UNEXPECTED-FAIL | browser/components/urlbar/tests/browser-tips/browser_searchTips.js | newtab - Test timed out

Hey! i just did a try run for this stack and this failure did not show up - https://treeherder.mozilla.org/jobs?repo=try&revision=d085bbfe64a661a2b5d2381b97dfab29709e87e4&selectedTaskRun=XZqXbC82TZeUDeLntohcGQ.0
am i missing something? the failure looks unrelated to the patches

Backed out for causing bc failures @ browser_searchTips.js

Backout link: https://hg.mozilla.org/integration/autoland/rev/adae7962ac50752cca541897a784da097412e26e

Push with failures

Failures log ->TEST-UNEXPECTED-FAIL | browser/components/urlbar/tests/browser-tips/browser_searchTips.js | newtab - Test timed out

https://hg.mozilla.org/mozilla-central/rev/544a69b3be17
https://hg.mozilla.org/mozilla-central/rev/1464cca7523a
https://hg.mozilla.org/mozilla-central/rev/b1cd88bc52ab
https://hg.mozilla.org/mozilla-central/rev/1ef229f10609
https://hg.mozilla.org/mozilla-central/rev/468c79acc5d2

FYI, over in bug 2061896, I made a change to WindowsLaunchOnLogin.sys.mjs in the old location. Looking at the git commit, it seems like your move was registered as a move and you didn't change the part of the file that I touched, so hopefully it won't be a problem, but I figured I'd mention it as something to watch out for.

Backout merged to central: https://hg-edge.mozilla.org/mozilla-central/rev/adae7962ac50

https://hg.mozilla.org/mozilla-central/rev/66ab5a32d5c1
https://hg.mozilla.org/mozilla-central/rev/3706928f5e4b
https://hg.mozilla.org/mozilla-central/rev/68edc995f351
https://hg.mozilla.org/mozilla-central/rev/bff88be5fd0b
https://hg.mozilla.org/mozilla-central/rev/525b3a315a76

Did you want to nominate this for a relnote? Is this enabled by default?
If so, set the relnote-firefox flag to "?"
https://wiki.mozilla.org/Release_Management/Release_Notes_Nomination

Possible wording:

Firefox on macOS can now be set to open automatically when the computer starts up, from the Startup section of Settings.

The wording sounds good to me, and I think we probably do want it included. It is enabled by default for new installations.

I'll check with david before setting the flag though.

"Enabled" means "the feature is available", right? And sure, we can relnote this. The wording sounds good to me.

Thanks, added to the Fx156 nightly release notes, please allow 30 minutes for the site to update.