service worker: Avoid starting up for activation during shutdown

content/browser/service_worker/service_worker_metrics.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_METRICS_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_METRICS_H_
 
 #include <stddef.h>
 
 #include "base/macros.h"
@@ skipping 141 matching lines @@
                                     bool is_installed,
                                     StartSituation start_situation);
 
   // Records the result of trying to stop a worker.
   static void RecordWorkerStopped(StopStatus status);
 
   // Records the time taken to successfully stop a worker.
   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
   // Worker is awake (i.e. after it is woken up until it gets stopped).
   static void RecordEventHandledRatio(EventType event,
                                       size_t handled_events,
                                       size_t fired_events);
 
   // Records how often a dispatched event times out.
   static void RecordEventTimeout(EventType event);
@@ skipping 49 matching lines @@
   static void RecordStartStatusAfterFailure(int failure_count,
                                             ServiceWorkerStatusCode status);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(ServiceWorkerMetrics);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_METRICS_H_