Implement notificationclose event

chrome/browser/notifications/platform_notification_service_impl.cc

Index: chrome/browser/notifications/platform_notification_service_impl.cc
diff --git a/chrome/browser/notifications/platform_notification_service_impl.cc b/chrome/browser/notifications/platform_notification_service_impl.cc
index 4edd70ba27455560e8dd8e587cb83eec00304c9f..de9ab9a7859e12b1f81e542b5af11cf0e32923ff 100644
--- a/chrome/browser/notifications/platform_notification_service_impl.cc
+++ b/chrome/browser/notifications/platform_notification_service_impl.cc
@@ -74,6 +74,30 @@ void OnPersistentNotificationDataDeleted(bool success) {
       success);
 }
 
+// Callback called when the persistent notification close event has been handled
+// to remove the notification from the database.
+void OnDidSendPersistentNotificationCloseEvent(
+    BrowserContext* browser_context,
+    int64_t persistent_notification_id,
+    const GURL& origin,
+    content::PersistentNotificationStatus status) {
+
+  PlatformNotificationContext* context =
+      BrowserContext::GetStoragePartitionForSite(browser_context, origin)
+          ->GetPlatformNotificationContext();
+
+  // TODO(nsatragno): add Notifications.PersistentWebNotificationCloseResult
+  // metric.
+  BrowserThread::PostTask(
+      BrowserThread::IO,
+      FROM_HERE,
+      base::Bind(&PlatformNotificationContext::DeleteNotificationData,
+                 context,
+                 persistent_notification_id,
+                 origin,
+                 base::Bind(&OnPersistentNotificationDataDeleted)));
+}
+
 // Persistent notifications fired through the delegate do not care about the
 // lifetime of the Service Worker responsible for executing the event.
 void OnEventDispatchComplete(content::PersistentNotificationStatus status) {
@@ -219,23 +243,20 @@ void PlatformNotificationServiceImpl::OnPersistentNotificationClose(
   if (by_user) {
     content::RecordAction(base::UserMetricsAction(
         "Notifications.Persistent.ClosedByUser"));
+
+    content::NotificationEventDispatcher::GetInstance()
+        ->DispatchNotificationCloseEvent(
+              browser_context,
+              persistent_notification_id,
+              origin,
+              base::Bind(&OnDidSendPersistentNotificationCloseEvent,
+                         browser_context,
+                         persistent_notification_id,
+                         origin));
   } else {
     content::RecordAction(base::UserMetricsAction(
         "Notifications.Persistent.ClosedProgrammatically"));
   }
-
-  PlatformNotificationContext* context =
-      BrowserContext::GetStoragePartitionForSite(browser_context, origin)
-          ->GetPlatformNotificationContext();
-
-  BrowserThread::PostTask(
-      BrowserThread::IO,
-      FROM_HERE,
-      base::Bind(&PlatformNotificationContext::DeleteNotificationData,
-                 context,
-                 persistent_notification_id,
-                 origin,
-                 base::Bind(&OnPersistentNotificationDataDeleted)));
 }
 
 blink::WebNotificationPermission