service worker: Avoid starting up for activation during shutdown

content/browser/service_worker/service_worker_metrics.h

Index: content/browser/service_worker/service_worker_metrics.h
diff --git a/content/browser/service_worker/service_worker_metrics.h b/content/browser/service_worker/service_worker_metrics.h
index dd2372ad316cfdb951e9fc82e61debfc0e62eea2..cba4cf43ed2da9688d959e968216bbe6bbb449a1 100644
--- a/content/browser/service_worker/service_worker_metrics.h
+++ b/content/browser/service_worker/service_worker_metrics.h
@@ -159,6 +159,9 @@ class ServiceWorkerMetrics {
   static void RecordStopWorkerTime(base::TimeDelta time);
 
   static void RecordActivateEventStatus(ServiceWorkerStatusCode status);
+  static void RecordActivateEventStatusWithShutdownStatus(
+      ServiceWorkerStatusCode status,
+      bool is_shutdown);
   static void RecordInstallEventStatus(ServiceWorkerStatusCode status);
 
   // Records how much of dispatched events are handled while a Service