1855280 - Remove the ability to switch to the old migration wizard

Status: RESOLVED FIXED

(Firefox :: Migration, task, P3)

Description

[Mike Conley (:mconley) (:⚙️)]

Before we remove the migration wizard in bug 1824851, we'll start by removing the ability to switch to it. This means getting rid of the Experimenter flag, as well as the browser.migrate.content-modal.enabled pref. That's what this bug is about.

Comment 1

[❌ PTO, back 8/18 ❌ Jared Hirsch [:jhirsch] (he/him) (Needinfo please)]

Setting P3 to match the bug this blocks

Comment 2

[Mike Conley (:mconley) (:⚙️)]

We can also remove / disable any tests for the old migration dialog in this bug.

Comment 3

[Mike Conley (:mconley) (:⚙️)]

Attachment: Bug 1855280 - Remove the ability to switch to the old migration wizard. r?kpatenio!,#omc-reviewers!

This removes the pref to re-enable the legacy wizard, and all of the things that used
to read from it.

It also disables the ability to use the legacy wizard from about:welcome with the
aboutWelcomeBehavior feature.

It also removes the closeMigrationWizard utility from BrowserTestUtils, since that
effectively became a thin-wrapper around BrowserTestUtils.removeTab.

Finally, this patch also removes some documentation about the legacy migration wizard,
and tests that specifically check the legacy dialog behaviour.

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/260e31b86a80
Remove the ability to switch to the old migration wizard. r=kpatenio,omc-reviewers,settings-reviewers,credential-management-reviewers,negin,aminomancer,mtigley

Comment 5

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/0aa621fe40f5
Fix bc failure on browser_all_files_referenced.js

Comment 6

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

https://hg.mozilla.org/mozilla-central/rev/260e31b86a80
https://hg.mozilla.org/mozilla-central/rev/0aa621fe40f5