Revert of [Chrome Settings UI] If User Exceptions are not allowed, prevent editing / viewing.

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

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview This is a data model representin
  */
 
 // The include directives are put into Javascript-style comments to prevent
 // parsing errors in non-flattened mode. The flattener still sees them.
@@ skipping 204 matching lines @@
      * @return {number} The new length of the model.
      */
     push: function(var_args) {
       var args = Array.prototype.slice.call(arguments);
       args.unshift(this.length, 0);
       this.splice.apply(this, args);
       return this.length;
     },
 
     /**
-     * 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
      * permutation tracks these indexes.
      *
      * @param {*} oldItem Old item that is contained in the model. If the item
      *     is not found in the model, the method call is just ignored.
      * @param {*} newItem New item.
      */
     replaceItem: function(oldItem, newItem) {
@@ skipping 206 matching lines @@
       if (a > b)
         return 1;
       return 0;
     }
   };
 
   return {
     ArrayDataModel: ArrayDataModel
   };
 });