Fenix Toolbar Menu Experiment: (Test branch 1: Menu includes Default Browser as a visible option, Control: Default Browser not an option)

[ItsDevyani]

User Story

• As a user, I want to know how I can easily set up Fenix as my default browser when I click the Toolbar menu.

Dependencies

• Toolbar Menu Test design option (done)
• Nimbus SDK integration with Fenix - Implementation guide
• DS resources to write measurement plan
• Engineering Time

Acceptance Criteria

• Set Default Browser as a visible option on the Toolbar menu.
• We can track default browser activations coming from this source full-funnel (Clicks at each step) including conversion to default.
• Nimbus SDK integration with Toolbar menu to enable testing on it.

Engineering notes

• Nimbus engineering docs
• Please sync with data science before starting this implementation to confirm the following:

Experiment length: TBD (default: 35 days total, 7 day enrollment period)
Start date: TBD
Experiment size: TBD
A/B split: TBD (default: 50/50)
Channels: Release, Nightly

• all of the Nimbus experiments should be pushed to nightly first. [...] Also, they don't need to go to beta afterwards but instead can go to production.

┆Issue is synchronized with this Jira Task

[amedyne]

Note: This ticket will be for tracking the Engineering tasks for developing Experiment Test Branch 1: Menu includes Default Browser as a visible option and the corresponding telemetry needed for this branch.