Update ServiceWorker event handled status histogram

content/browser/service_worker/service_worker_version.cc

Index: content/browser/service_worker/service_worker_version.cc
diff --git a/content/browser/service_worker/service_worker_version.cc b/content/browser/service_worker/service_worker_version.cc
index ff185072741e0c3924c982e8da48573ee9a068c4..17889607937cf124fc2870e01a870929df3a506b 100644
--- a/content/browser/service_worker/service_worker_version.cc
+++ b/content/browser/service_worker/service_worker_version.cc
@@ -396,10 +396,12 @@ class ServiceWorkerVersion::Metrics {
  public:
   Metrics() {}
   ~Metrics() {
-    ServiceWorkerMetrics::RecordEventStatus(fired_events, handled_events);
+    ServiceWorkerMetrics::RecordPerWorkerEventHandledStatus(fired_events,
+                                                            handled_events);
   }
 
-  void RecordEventStatus(bool handled) {
+  void RecordEventHandledStatus(bool handled) {
+    ServiceWorkerMetrics::RecordEventHandledStatus(handled);
     ++fired_events;
     if (handled)
       ++handled_events;
@@ -1329,7 +1331,7 @@ void ServiceWorkerVersion::OnFetchEventFinished(
 
   // TODO(kinuko): Record other event statuses too.
   const bool handled = (result == SERVICE_WORKER_FETCH_EVENT_RESULT_RESPONSE);
-  metrics_->RecordEventStatus(handled);
+  metrics_->RecordEventHandledStatus(handled);
 
   scoped_refptr<ServiceWorkerVersion> protect(this);
   callback->Run(SERVICE_WORKER_OK, result, response);