Consider Button clicks for extension notifications

chrome/browser/notifications/non_persistent_notification_handler.cc

Index: chrome/browser/notifications/non_persistent_notification_handler.cc
diff --git a/chrome/browser/notifications/non_persistent_notification_handler.cc b/chrome/browser/notifications/non_persistent_notification_handler.cc
index 84ec7804cbf902ee529a7b7d4f11a278c1b58641..9a33f5360089a844572c0c027f1722defb9f2b20 100644
--- a/chrome/browser/notifications/non_persistent_notification_handler.cc
+++ b/chrome/browser/notifications/non_persistent_notification_handler.cc
@@ -31,7 +31,10 @@ void NonPersistentNotificationHandler::OnClick(
   DCHECK(reply.is_null());
 
   if (notifications_.find(notification_id) != notifications_.end()) {
-    notifications_[notification_id]->Click();
+    if (action_index >= 0)
+      notifications_[notification_id]->ButtonClick(action_index);
+    else
+      notifications_[notification_id]->Click();
   }
 }