Introduce ServiceWorker.EventDispatchingDelay UMA

content/browser/service_worker/service_worker_register_job.h

 // Copyright 2013 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_REGISTER_JOB_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTER_JOB_H_
 
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
+#include "base/time/time.h"
 #include "content/browser/service_worker/embedded_worker_instance.h"
 #include "content/browser/service_worker/service_worker_register_job_base.h"
 #include "content/browser/service_worker/service_worker_registration.h"
 #include "content/common/service_worker/service_worker_status_code.h"
 #include "url/gurl.h"
 
 namespace content {
 
 class ServiceWorkerJobCoordinator;
 class ServiceWorkerStorage;
@@ skipping 94 matching lines @@
   void ContinueWithRegistrationForSameScriptUrl(
       scoped_refptr<ServiceWorkerRegistration> existing_registration,
       ServiceWorkerStatusCode status);
   void UpdateAndContinue();
   void OnStartWorkerFinished(ServiceWorkerStatusCode status);
   void OnStoreRegistrationComplete(ServiceWorkerStatusCode status);
   void InstallAndContinue();
   void DispatchInstallEvent();
   void OnInstallFinished(int request_id,
                          blink::WebServiceWorkerEventResult result,
-                         bool has_fetch_handler);
+                         bool has_fetch_handler,
+                         base::Time dispatch_event_time);
   void OnInstallFailed(ServiceWorkerStatusCode status);
   void Complete(ServiceWorkerStatusCode status);
   void Complete(ServiceWorkerStatusCode status,
                 const std::string& status_message);
   void CompleteInternal(ServiceWorkerStatusCode status,
                         const std::string& status_message);
   void ResolvePromise(ServiceWorkerStatusCode status,
                       const std::string& status_message,
                       ServiceWorkerRegistration* registration);
 
@@ skipping 23 matching lines @@
   std::string promise_resolved_status_message_;
   scoped_refptr<ServiceWorkerRegistration> promise_resolved_registration_;
   base::WeakPtrFactory<ServiceWorkerRegisterJob> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerRegisterJob);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTER_JOB_H_