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

content/shell/browser/layout_test/layout_test_push_messaging_service.cc

Index: content/shell/browser/layout_test/layout_test_push_messaging_service.cc
diff --git a/content/shell/browser/layout_test/layout_test_push_messaging_service.cc b/content/shell/browser/layout_test/layout_test_push_messaging_service.cc
index 5f0b0ec6edbce31b8cc541a36ddfa100da77c796..3b71a2e5179bf7a7dd0406be07ddac6ba612501c 100644
--- a/content/shell/browser/layout_test/layout_test_push_messaging_service.cc
+++ b/content/shell/browser/layout_test/layout_test_push_messaging_service.cc
@@ -82,6 +82,10 @@ LayoutTestPushMessagingService::GetPermissionStatus(
                             embedding_origin));
 }
 
+bool LayoutTestPushMessagingService::SupportNonVisibleMessages() {
+  return false;
+}
+
 void LayoutTestPushMessagingService::Unregister(
     const GURL& requesting_origin,
     int64 service_worker_registration_id,