Minimize the delegate dependencies for non persistent notifications.

content/browser/notifications/notification_message_filter.cc

Index: content/browser/notifications/notification_message_filter.cc
diff --git a/content/browser/notifications/notification_message_filter.cc b/content/browser/notifications/notification_message_filter.cc
index 56064347d26ab470e7c5aa4d74596e7273e25d19..998d2bd586fdad80adefe781fe8440931d942056 100644
--- a/content/browser/notifications/notification_message_filter.cc
+++ b/content/browser/notifications/notification_message_filter.cc
@@ -10,6 +10,7 @@
 #include "base/command_line.h"
 #include "base/feature_list.h"
 #include "content/browser/bad_message.h"
+#include "content/browser/notifications/notification_event_dispatcher_impl.h"
 #include "content/browser/notifications/notification_id_generator.h"
 #include "content/browser/notifications/page_notification_delegate.h"
 #include "content/browser/notifications/platform_notification_context_impl.h"
@@ -96,7 +97,7 @@ NotificationMessageFilter::NotificationMessageFilter(
       browser_context_(browser_context),
       weak_factory_io_(this) {}
 
-NotificationMessageFilter::~NotificationMessageFilter() {}
+NotificationMessageFilter::~NotificationMessageFilter() = default;
 
 void NotificationMessageFilter::DidCloseNotification(
     const std::string& notification_id) {
@@ -105,6 +106,10 @@ void NotificationMessageFilter::DidCloseNotification(
 }
 
 void NotificationMessageFilter::OnDestruct() const {
+  NotificationEventDispatcherImpl* event_dispatcher =
+      content::NotificationEventDispatcherImpl::GetInstance();
+  DCHECK(event_dispatcher);
+  event_dispatcher->RendererGone(process_id_);
   BrowserThread::DeleteOnIOThread::Destruct(this);
 }
 
@@ -161,6 +166,11 @@ void NotificationMessageFilter::OnShowPlatformNotification(
           origin, notification_data.tag, non_persistent_notification_id,
           process_id_);
 
+  NotificationEventDispatcherImpl* event_dispatcher =
+      content::NotificationEventDispatcherImpl::GetInstance();
+  event_dispatcher->RegisterNonPersistentNotification(
+      notification_id, process_id_, non_persistent_notification_id);
+
   std::unique_ptr<DesktopNotificationDelegate> delegate(
       new PageNotificationDelegate(process_id_, non_persistent_notification_id,
                                    notification_id));