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ui/webui/resources/js/cr/ui/array_data_model.js

Index: ui/webui/resources/js/cr/ui/array_data_model.js
diff --git a/ui/webui/resources/js/cr/ui/array_data_model.js b/ui/webui/resources/js/cr/ui/array_data_model.js
index 969f9484ff8a295571d2c87f12929e24b71bfde3..f594d205dc4890c5d2f3a72f177329b98d8d833f 100644
--- a/ui/webui/resources/js/cr/ui/array_data_model.js
+++ b/ui/webui/resources/js/cr/ui/array_data_model.js
@@ -222,6 +222,17 @@ cr.define('cr.ui', function() {
     },
 
     /**
+     * Removes and returns the last item of the model.
+     *
+     * This dispatches a splice event.
+     *
+     * @return {*} The last item, or undefined if model has no more items.
+     */
+    pop: function() {
+      return this.splice(this.array_.length - 1, 1)[0];
+    },
+
+    /**
      * Updates the existing item with the new item.
      *
      * The existing item and the new item are regarded as the same item and the