Introduce ServiceWorker.EventDispatchingDelay UMA

content/browser/service_worker/service_worker_register_job.cc

 // 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.
 
 #include "content/browser/service_worker/service_worker_register_job.h"
 
 #include <stdint.h>
 
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
+#include "base/time/time.h"
 #include "content/browser/service_worker/embedded_worker_status.h"
 #include "content/browser/service_worker/service_worker_context_core.h"
 #include "content/browser/service_worker/service_worker_job_coordinator.h"
 #include "content/browser/service_worker/service_worker_metrics.h"
 #include "content/browser/service_worker/service_worker_registration.h"
 #include "content/browser/service_worker/service_worker_storage.h"
 #include "content/browser/service_worker/service_worker_write_to_cache_job.h"
 #include "content/common/service_worker/service_worker_messages.h"
 #include "content/common/service_worker/service_worker_types.h"
 #include "content/common/service_worker/service_worker_utils.h"
@@ skipping 412 matching lines @@
       ->RegisterRequestCallback<ServiceWorkerHostMsg_InstallEventFinished>(
           request_id, base::Bind(&ServiceWorkerRegisterJob::OnInstallFinished,
                                  weak_factory_.GetWeakPtr()));
   new_version()->DispatchEvent({request_id},
                                ServiceWorkerMsg_InstallEvent(request_id));
 }
 
 void ServiceWorkerRegisterJob::OnInstallFinished(
     int request_id,
     blink::WebServiceWorkerEventResult result,
-    bool has_fetch_handler) {
+    bool has_fetch_handler,
+    base::Time dispatch_event_time) {
   new_version()->FinishRequest(
-      request_id, result == blink::WebServiceWorkerEventResultCompleted);
+      request_id, result == blink::WebServiceWorkerEventResultCompleted,
+      dispatch_event_time);
 
   ServiceWorkerStatusCode status = SERVICE_WORKER_ERROR_FAILED;
   switch (result) {
     case blink::WebServiceWorkerEventResultCompleted:
       status = SERVICE_WORKER_OK;
       break;
     case blink::WebServiceWorkerEventResultRejected:
       status = SERVICE_WORKER_ERROR_EVENT_WAITUNTIL_REJECTED;
       break;
     default:
@@ skipping 188 matching lines @@
       new_version()->force_bypass_cache_for_scripts() ||
       registration()->last_update_check().is_null()) {
     registration()->set_last_update_check(base::Time::Now());
 
     if (registration()->has_installed_version())
       context_->storage()->UpdateLastUpdateCheckTime(registration());
   }
 }
 
 }  // namespace content