[fenix] Enable Gecko metrics exfiltration through Glean (https://github.com/mozilla-mobile/fenix/pull/5124)

app/src/geckoBeta/java/org/mozilla/fenix/engine/GeckoProvider.kt

@@ -4,6 +4,7 @@
 
 import android.content.Context
 import android.os.Bundle
+import mozilla.components.browser.engine.gecko.glean.GeckoAdapter
 import mozilla.components.lib.crash.handler.CrashHandlerService
 import org.mozilla.fenix.utils.Settings
 import org.mozilla.geckoview.GeckoRuntime
@@ -33,6 +34,7 @@ object GeckoProvider {
         val runtimeSettings = builder
             .crashHandler(CrashHandlerService::class.java)
             .useContentProcessHint(true)
+            .telemetryDelegate(GeckoAdapter())
             .build()
 
         if (!Settings.getInstance(context).shouldUseAutoSize) {

app/src/geckoNightly/java/org/mozilla/fenix/engine/GeckoProvider.kt

@@ -4,6 +4,7 @@
 
 import android.content.Context
 import android.os.Bundle
+import mozilla.components.browser.engine.gecko.glean.GeckoAdapter
 import mozilla.components.lib.crash.handler.CrashHandlerService
 import org.mozilla.fenix.utils.Settings
 import org.mozilla.geckoview.GeckoRuntime
@@ -33,6 +34,7 @@ object GeckoProvider {
         val runtimeSettings = builder
             .crashHandler(CrashHandlerService::class.java)
             .useContentProcessHint(true)
+            .telemetryDelegate(GeckoAdapter())
             .build()
 
         if (!Settings.getInstance(context).shouldUseAutoSize) {