Close #27779: Add telemetry for showing the default browser notification

app/metrics.yaml

@@ -198,6 +198,19 @@ events:
       - android-probes@mozilla.com
       - kbrosnan@mozilla.com
     expires: never
+  default_browser_notif_shown:
+    type: event
+    description: |
+      Default browser notification was shown to the user
+    bugs:
+      - https://github.com/mozilla-mobile/fenix/issues/27779
+    data_reviews:
+      - https://github.com/mozilla-mobile/fenix/pull/27780
+    data_sensitivity:
+      - technical
+    notification_emails:
+      - android-probes@mozilla.com
+    expires: 122
   toolbar_menu_visible:
     type: event
     description: |

app/src/main/java/org/mozilla/fenix/onboarding/DefaultBrowserNotificationWorker.kt

@@ -19,7 +19,9 @@ import androidx.work.OneTimeWorkRequest
 import androidx.work.WorkManager
 import androidx.work.Worker
 import androidx.work.WorkerParameters
+import mozilla.components.service.glean.private.NoExtras
 import mozilla.components.support.base.ids.SharedIdsHelper
+import org.mozilla.fenix.GleanMetrics.Events
 import org.mozilla.fenix.HomeActivity
 import org.mozilla.fenix.R
 import org.mozilla.fenix.ext.settings
@@ -36,6 +38,7 @@ class DefaultBrowserNotificationWorker(
         ensureChannelExists()
         NotificationManagerCompat.from(applicationContext)
             .notify(NOTIFICATION_TAG, NOTIFICATION_ID, buildNotification())
+        Events.defaultBrowserNotifShown.record(NoExtras())
 
         // default browser notification should only happen once
         applicationContext.settings().defaultBrowserNotificationDisplayed = true