[Telemetry] Recently closed tabs

[vesta0]

Description & Product Manager / Data Scientist User Story

As a product manager, I'd like to understand how often users access their recently closed tabs, so I can better prioritize related features.

What questions will you answer with this data?

• How often users access their "recently closed tabs" through the tabs tray menu
• How often users restore a recently closed tab?
• How often do users access their History when they are on the "recently closed tabs" page?

Acceptance Criteria

• ENG files a DS JIRA request outlining their methodology.
• DS sign off on instrumentation methodology addressing product questions.
• Event pings can be queried via re:dash
• Event pings can be queried via amplitude
• We are sending telemetry events for the actions listed in the requirements
• We have documented the telemetry
• We have asked a data steward to review the telemetry

┆Issue is synchronized with this Jira Task

[Mugurell]

Talked offline with Kate who confirmed with DS and Boek:

• The newly added metrics should log events, not counters anymore
• An an expiration date 6 months is preferred.
  Maybe if there is already related telemetry for that part of the screen / feature we can reuse the existing expiration date so that all related telemetry probes will be renewed at the same time.

[AndiAJ]

Hi, verified as fixed on the latest Nightly 201216 using a Google Pixel 3a (Android 11)

✔️ Access "recently closed tabs" through the tabs tray menu
Ping 9b51d3ed-2368-45a2-a7fc-deced5e3b6c6

{
          "category": "tabs_tray",
          "name": "menu_opened",
          "timestamp": 4640
        },
        {
          "category": "events",
          "name": "recently_closed_tabs_opened",
          "timestamp": 5926
        }

✔️ Access "recently closed tabs" through the history fragment
Ping 43191b53-a3b3-4d57-9934-d7136d48169d

{
          "category": "events",
          "extra": {
            "item": "history"
          },
          "name": "browser_menu_action",
          "timestamp": 11207
        },
        {
          "category": "history",
          "name": "opened",
          "timestamp": 11313
        },
        {
          "category": "events",
          "name": "recently_closed_tabs_opened",
          "timestamp": 12460
        }

Logcat
Glean dashboard