MD Bookmarks: Prevent navigating to invalid folders

chrome/browser/resources/md_bookmarks/store_client.js

Index: chrome/browser/resources/md_bookmarks/store_client.js
diff --git a/chrome/browser/resources/md_bookmarks/store_client.js b/chrome/browser/resources/md_bookmarks/store_client.js
index 7d1512734967740a7b2c1f51f90ab171bc17bd8a..36e0a61748f6fb8323b193d5eb2e72cab1a39763 100644
--- a/chrome/browser/resources/md_bookmarks/store_client.js
+++ b/chrome/browser/resources/md_bookmarks/store_client.js
@@ -59,7 +59,7 @@ cr.define('bookmarks', function() {
     /**
      * Helper to dispatch an action to the store, which will update the store
      * data and then (possibly) flow through to the UI.
-     * @param {Action} action
+     * @param {?Action|DeferredAction} action
      */
     dispatch: function(action) {
       bookmarks.Store.getInstance().handleAction(action);