Bug 1876596 - Add probe for debug drawer secret setting

app/metrics.yaml

@@ -11353,3 +11353,19 @@ fx_suggest:
     expires: never
     send_in_pings:
       - fx-suggest
+debug_drawer:
+  debug_drawer_enabled:
+    type: boolean
+    description: |
+      Whether or not the user has enabled the Debug Drawer feature.
+    send_in_pings:
+      - metrics
+    bugs:
+      - https://bugzilla.mozilla.org/show_bug.cgi?id=1876596
+    data_reviews:
+      - https://github.com/mozilla-mobile/firefox-android/pull/5356
+    data_sensitivity:
+      - interaction
+    notification_emails:
+      - android-probes@mozilla.com
+    expires: never

app/src/main/java/org/mozilla/fenix/settings/SecretSettingsFragment.kt

@@ -23,6 +23,7 @@ import org.mozilla.fenix.ext.components
 import org.mozilla.fenix.ext.nav
 import org.mozilla.fenix.ext.settings
 import org.mozilla.fenix.ext.showToolbar
+import org.mozilla.fenix.GleanMetrics.DebugDrawer as DebugDrawerMetrics
 
 class SecretSettingsFragment : PreferenceFragmentCompat() {
 
@@ -114,6 +115,7 @@ class SecretSettingsFragment : PreferenceFragmentCompat() {
                 onPreferenceChangeListener =
                     Preference.OnPreferenceChangeListener { _, newValue ->
                         debugSettingsRepository.setDebugDrawerEnabled(enabled = newValue as Boolean)
+                        DebugDrawerMetrics.debugDrawerEnabled.set(newValue)
                         true
                     }
             }