We show the history for a given tab if you long-press the back button. It's unclear how much value this panel provides. The crash-numbers from Bug 1120441 suggest that there are either a significant number of users, or users don't understand that this panel is even available and are therefore accidentally triggering it (possibly in the course of trying to shut down the app). Getting usage numbers should hopefully help determine the usefulness, we probably want to add probes for the following events: - Panel activated - Item selected (maybe item position as an extra?) (- Exit from the app directly after activating the panel? This might be hard to measure)
Since this report is about Telemetry, I'm moving it to the Metrics component.