Implement notificationclose event

content/renderer/service_worker/service_worker_context_client.h

Index: content/renderer/service_worker/service_worker_context_client.h
diff --git a/content/renderer/service_worker/service_worker_context_client.h b/content/renderer/service_worker/service_worker_context_client.h
index 48a0f37a7fcb749c238ded68eecf01fe008f32ae..1241fb7a0850f978fefd608d717feb9417357ead 100644
--- a/content/renderer/service_worker/service_worker_context_client.h
+++ b/content/renderer/service_worker/service_worker_context_client.h
@@ -138,6 +138,9 @@ class ServiceWorkerContextClient
   void didHandleNotificationClickEvent(
       int request_id,
       blink::WebServiceWorkerEventResult result) override;
+  void didHandleNotificationCloseEvent(
+      int request_id,
+      blink::WebServiceWorkerEventResult result) override;
   void didHandlePushEvent(int request_id,
                           blink::WebServiceWorkerEventResult result) override;
   void didHandleSyncEvent(int request_id,
@@ -194,6 +197,10 @@ class ServiceWorkerContextClient
       const PlatformNotificationData& notification_data,
       int action_index);
   void OnPushEvent(int request_id, const PushEventPayload& payload);
+  void OnNotificationCloseEvent(
+      int request_id,
+      int64_t persistent_notification_id,
+      const PlatformNotificationData& notification_data);
   void OnGeofencingEvent(int request_id,
                          blink::WebGeofencingEventType event_type,
                          const std::string& region_id,