Currently QuantumBar is only enabled for EARLY_BETA_OR_EARLIER. That normally gets turned off between b8/b9 (which will be between Thursday and Monday).

From Mike de Boer on irc:

I think we need to enable it to ride 68
We don't have any real blockers left, so the call is good

This will also need uplifting to beta.

I should also add that our experiment didn't show any significant difference in users behaviors, that would have been an alarm signal.

Comment on attachment 9069971 [details]
Bug 1557051 - Enable QuantumBar for release users.

Beta/Release Uplift Approval Request

• User impact if declined: the Quantum Bar is currently only enabled for early beta, but it is expected to be enabled in release. b9 is likely to wrongly disable the feature.
• Is this code covered by automated tests?: No
• Has the fix been verified in Nightly?: No
• Needs manual test from QE?: No
• If yes, steps to reproduce:
• List of other uplifts needed: None
• Risk to taking this patch: Low
• Why is the change risky/not risky? (and alternatives if risky): just removing the ifdef in prefs, the feature is already enabled in beta.
• String changes made/needed:

Comment on attachment 9069971 [details]
Bug 1557051 - Enable QuantumBar for release users.

keep quantumbar enabled through release. approved for 68.0b8

https://hg.mozilla.org/mozilla-central/rev/e5357685dd4e

https://hg.mozilla.org/releases/mozilla-beta/rev/88f51f844ca5