Add tab.StopAllServiceWorkers()

telemetry/telemetry/internal/browser/wait_for_serviceworker_registration.js

Index: telemetry/telemetry/internal/browser/wait_for_serviceworker_registration.js
diff --git a/telemetry/telemetry/internal/browser/wait_for_serviceworker_registration.js b/telemetry/telemetry/internal/browser/wait_for_serviceworker_registration.js
index 796d770cea28bfacf9d3c4d86100e88768c7f9c1..b2e7e13031f87e7a3cd3b8c622f3710dbbf79a99 100644
--- a/telemetry/telemetry/internal/browser/wait_for_serviceworker_registration.js
+++ b/telemetry/telemetry/internal/browser/wait_for_serviceworker_registration.js
@@ -7,6 +7,8 @@
 /**
  * @fileoverview This file provides a JavaScript helper function that
  * determines whether service worker registration has completed.
+ * TODO(crbug.com/768701): Move the ServiceWorker state operations to
+ * InspectorServiceWorker by implementing _OnNotification().
  */
 (function() {
   // Make executing this code idempotent.