Add layout test for reply property of notificationclick event

content/shell/browser/layout_test/layout_test_message_filter.cc

Index: content/shell/browser/layout_test/layout_test_message_filter.cc
diff --git a/content/shell/browser/layout_test/layout_test_message_filter.cc b/content/shell/browser/layout_test/layout_test_message_filter.cc
index 630417c49b6b0480da84eb3b1be1695dacf18793..248f3e172659bb4f4d1051dd4b0734a37467ca45 100644
--- a/content/shell/browser/layout_test/layout_test_message_filter.cc
+++ b/content/shell/browser/layout_test/layout_test_message_filter.cc
@@ -125,11 +125,13 @@ void LayoutTestMessageFilter::OnSetDatabaseQuota(int quota) {
 }
 
 void LayoutTestMessageFilter::OnSimulateWebNotificationClick(
-    const std::string& title, int action_index) {
+    const std::string& title,
+    int action_index,
+    const base::NullableString16& reply) {
   LayoutTestNotificationManager* manager =
       LayoutTestContentBrowserClient::Get()->GetLayoutTestNotificationManager();
   if (manager)
-    manager->SimulateClick(title, action_index);
+    manager->SimulateClick(title, action_index, reply);
 }
 
 void LayoutTestMessageFilter::OnSimulateWebNotificationClose(