Reject the permissionState promise with NotSupported Exception (2/3)

content/public/browser/push_messaging_service.cc

Index: content/public/browser/push_messaging_service.cc
diff --git a/content/public/browser/push_messaging_service.cc b/content/public/browser/push_messaging_service.cc
index 27335eb9adfbab9ca60bce7e78f50ae897fd6bb2..0deedf94e1ef66ee39835ec76d09a65046af5a96 100644
--- a/content/public/browser/push_messaging_service.cc
+++ b/content/public/browser/push_messaging_service.cc
@@ -90,6 +90,10 @@ scoped_refptr<ServiceWorkerContextWrapper> GetServiceWorkerContext(
 
 }  // anonymous namespace
 
+bool PushMessagingService::SupportNonVisibleMessages() {
+  return false;
+}
+
 // static
 void PushMessagingService::GetNotificationsShownByLastFewPushes(
     ServiceWorkerContext* service_worker_context,