[Telemetry] Determine how frequently visited top sites are used

[gabrielluong]

Description & Product Manager / Data Scientist User Story

As a product manager, I need to know how users interact with frequently visited top sites so I can use this insight to prioritize bugs and enhancements related to this feature.

What questions will you answer with this data?

• What % of users open a frequently visited top site? And how often does a top site user open a top site in a day/week?
• What % of users use the carousel to access the second page of frequently visited top sites?
• What % of users long-press on a frequently visited top site?
• What % of users open a top site in a private tab?
• What % of users delete a frequently visited top site from history?

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

[AndiAJ]

Hi, verified as fixed on the latest Nightly Build 200921 using a Google Pixel 3a (Android 11)

► Pinned top sites

✔️ Open a pinned top site - Ping bbed053a-798a-43da-94cd-199f36d3f1e0

        {
          "category": "top_sites",
          "name": "open_in_new_tab",
          "timestamp": 13105
        },
        {
          "category": "top_sites",
          "name": "open_pinned",
          "timestamp": 13106
        }

✔️ Long tap + Open in a private tab - Ping a20d9a71-0684-4824-8cff-7f73e9867f1d

{
          "category": "top_sites",
          "extra": {
            "type": "PINNED"
          },
          "name": "long_press",
          "timestamp": 2773
        },
        {
          "category": "top_sites",
          "name": "open_in_private_tab",
          "timestamp": 3785
        }

✔️ Long tap + Delete a pinned top site - Ping 839099f7-b949-4648-bec7-73ebb88b1811

{
          "category": "top_sites",
          "extra": {
            "type": "PINNED"
          },
          "name": "long_press",
          "timestamp": 2015
        },
        {
          "category": "top_sites",
          "name": "remove",
          "timestamp": 3240
        }

► Carousel movement + page number the carousel is now on

Ping b80681f4-9bc3-4758-812f-1957bb9902e8

 {
          "category": "top_sites",
          "extra": {
            "page": "1"
          },
          "name": "swipe_carousel",
          "timestamp": 959
        }

► Frequently visited top sites

✔️ Open a frequently visited top site - Ping 6c8b6567-f6c6-4364-9244-3a2327c65f96

{
          "category": "top_sites",
          "name": "open_in_new_tab",
          "timestamp": 1284
        },
        {
          "category": "top_sites",
          "name": "open_frecency",
          "timestamp": 1285
        }

✔️ Long tap + Open in a private tab - Ping fc254d36-cd62-4b66-9d3c-4402746b1d6c

{
          "category": "top_sites",
          "extra": {
            "type": "FRECENT"
          },
          "name": "long_press",
          "timestamp": 2872
        },
        {
          "category": "top_sites",
          "name": "open_in_private_tab",
          "timestamp": 4306
        }

✔️ Long tap + delete a frequently visited top site from history - Ping 3f0fca30-0846-4520-acda-28790

{
          "category": "top_sites",
          "extra": {
            "type": "FRECENT"
          },
          "name": "long_press",
          "timestamp": 1035
        },
        {
          "category": "top_sites",
          "name": "remove",
          "timestamp": 1880
        }

Logcat
Glean dashboard

[AndiAJ]

@sblatz I've opened #15265 because I've noticed that in the metrics ping the "metrics.has_top_sites" remains set to false