diff --git a/brightray/browser/platform_notification_service_impl.cc b/brightray/browser/platform_notification_service_impl.cc
index b613dc2ad226..d2b0f679a6c7 100644
--- a/brightray/browser/platform_notification_service_impl.cc
+++ b/brightray/browser/platform_notification_service_impl.cc
@@ -63,7 +63,13 @@ void PlatformNotificationServiceImpl::DisplayPersistentNotification(
 
 void PlatformNotificationServiceImpl::ClosePersistentNotification(
     content::BrowserContext* browser_context,
-    const std::string& persistent_notification_id) {
+    int64_t persistent_notification_id) {
+}
+
+bool PlatformNotificationServiceImpl::GetDisplayedPersistentNotifications(
+    content::BrowserContext* browser_context,
+    std::set<std::string>* displayed_notifications) {
+  return false;
 }
 
 }  // namespace brightray
diff --git a/brightray/browser/platform_notification_service_impl.h b/brightray/browser/platform_notification_service_impl.h
index 4b0d4fa96c7f..da1e2ad81eba 100644
--- a/brightray/browser/platform_notification_service_impl.h
+++ b/brightray/browser/platform_notification_service_impl.h
@@ -51,7 +51,10 @@ class PlatformNotificationServiceImpl
       const content::PlatformNotificationData& notification_data) override;
   void ClosePersistentNotification(
       content::BrowserContext* browser_context,
-      const std::string& persistent_notification_id) override;
+      int64_t persistent_notification_id) override;
+  bool GetDisplayedPersistentNotifications(
+      content::BrowserContext* browser_context,
+      std::set<std::string>* displayed_notifications) override;
 
   scoped_ptr<NotificationPresenter> notification_presenter_;