In 'Settings', we should either add a new section or link to 'Experiments' which includes a toggle setting named Activity Stream with a small blurb about what the feature is to allow users to opt into using it.

Is this something you want to mock up or should we copy the WIP implementation on Android?

Attached is an InVision mockup of what this might look like. As we discussed this morning, we could forgo the view(s) specifically related to Test Pilot and just show a detail page for Activity Stream with a toggle to enable/disable. There's also some thoughts here for mobile snippets. https://invis.io/PG7ZAVAXB

The first phase of AS is similar enough to top sites that I dont think we need an opt in.

If you don't mind I'm going to reopen this for a later 'phase' of work. Doesn't have to be done as part of this phase but I think it's something we need to consider at some point in the future.