Remove many delegates, let's see what breaks

chrome/browser/notifications/stub_notification_display_service.cc

Index: chrome/browser/notifications/stub_notification_display_service.cc
diff --git a/chrome/browser/notifications/stub_notification_display_service.cc b/chrome/browser/notifications/stub_notification_display_service.cc
index 3a94e79456643c788fceb77fe0e080b92c10ff02..578c43a8b8edc4b0153e7e80186278b5ad1f405b 100644
--- a/chrome/browser/notifications/stub_notification_display_service.cc
+++ b/chrome/browser/notifications/stub_notification_display_service.cc
@@ -7,6 +7,7 @@
 #include <algorithm>
 
 #include "base/memory/ptr_util.h"
+#include "chrome/browser/notifications/notification_handler.h"
 #include "chrome/browser/profiles/profile.h"
 
 // static
@@ -17,7 +18,7 @@ std::unique_ptr<KeyedService> StubNotificationDisplayService::FactoryForTests(
 }
 
 StubNotificationDisplayService::StubNotificationDisplayService(Profile* profile)
-    : NotificationDisplayService(profile) {}
+    : NotificationDisplayService(profile), profile_(profile) {}
 
 StubNotificationDisplayService::~StubNotificationDisplayService() = default;
 
@@ -35,20 +36,22 @@ void StubNotificationDisplayService::RemoveNotification(
   if (iter == notifications_.end())
     return;
 
-  // TODO(peter): Invoke the handlers when that has been generalized.
-  iter->second.delegate()->Close(by_user);
-
+  NotificationHandler* handler = GetNotificationHandler(notification_type);
+  DCHECK(handler);
+  handler->OnClose(profile_, iter->second.origin_url().spec(), notification_id,
+                   by_user);
   notifications_.erase(iter);
 }
 
 void StubNotificationDisplayService::RemoveAllNotifications(
     NotificationCommon::Type notification_type,
     bool by_user) {
+  NotificationHandler* handler = GetNotificationHandler(notification_type);
+  DCHECK(handler);
   for (auto iter = notifications_.begin(); iter != notifications_.end();) {
     if (iter->first == notification_type) {
-      // TODO(peter): Invoke the handlers when that has been generalized.
-      iter->second.delegate()->Close(by_user);
-
+      handler->OnClose(profile_, iter->second.origin_url().spec(),
+                       iter->second.id(), by_user);
       iter = notifications_.erase(iter);
     } else {
       iter++;