Bug 1855421 - Add feature variable to test out precise timestamps in Glean events

app/.experimenter.yaml

@@ -28,6 +28,9 @@ glean:
   hasExposure: true
   exposureDescription: ""
   variables:
+    event-timestamps-enabled:
+      type: boolean
+      description: Whether Glean reports all events with precise wall-clock timestamps
     metrics-enabled:
       type: json
       description: "A map of metric base-identifiers to booleans representing the state of the 'enabled' flag for that metric."

app/nimbus.fml.yaml

@@ -332,6 +332,10 @@ features:
         description: "A map of metric base-identifiers to booleans representing the state of the 'enabled' flag for that metric."
         type: Map<String, Boolean>
         default: {}
+      enable-event-timestamps:
+        description: "Enables precise event timestamps for Glean events"
+        type: Boolean
+        default: false
 
   splash-screen:
     description: "A feature that extends splash screen duration, allowing additional data fetching time for the app's initial run."

app/src/main/java/org/mozilla/fenix/FenixApplication.kt

@@ -203,6 +203,7 @@ open class FenixApplication : LocaleAwareApplication(), Provider {
             httpClient = ConceptFetchHttpUploader(
                 lazy(LazyThreadSafetyMode.NONE) { components.core.client },
             ),
+            enableEventTimestamps = FxNimbus.features.glean.value().enableEventTimestamps,
         )
 
         Glean.initialize(