Initial accounts options page.

chrome/browser/resources/shared/js/cr/ui/array_data_model.js

 // Copyright (c) 2010 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
  */
 
 cr.define('cr.ui', function() {
   const EventTarget = cr.EventTarget;
@@ skipping 15 matching lines @@
     /**
      * The length of the data model.
      * @type {number}
      */
     get length() {
       return this.array_.length;
     },
 
     /**
      * Returns the item at the given index.
-     * @param {number} index The index of the element go get.
+     * @param {number} index The index of the element to get.
      * @return {*} The element at the given index.
      */
     item: function(index) {
       return this.array_[index];
     },
 
     /**
      * Returns the first matching item.
      * @param {*} item The item to find.
      * @param {number=} opt_fromIndex If provided, then the searching start at
      *     the {@code opt_fromIndex}.
      * @return {number} The index of the first found element or -1 if not found.
      */
     indexOf: function(item, opt_fromIndex) {
       return this.array_.indexOf(item, opt_fromIndex);
     },
 
     /**
+     * Returns an array of elements in a selected range.
+     * @param {number=} opt_from The starting index of the selected range.
+     * @param {number=} opt_to The ending index of selected range.
+     * @return {Array} An array of elements in the selected range.
+     */
+    slice: function(opt_from, opt_to) {
+      return this.array_.slice.apply(this.array_, arguments);
+    },
+
+    /**
      * This removes and adds items to the model.
      *
      * This dispatches a splice event.
      *
      * @param {number} index The index of the item to update.
      * @param {number} deleteCount The number of items to remove.
      * @param {...*} The items to add.
      * @return {!Array} An array with the removed items.
      */
     splice: function(index, deleteCount, var_args) {
@@ skipping 28 matching lines @@
       var e = new Event('change');
       e.index = index;
       this.dispatchEvent(e);
     }
   };
 
   return {
     ArrayDataModel: ArrayDataModel
   };
 });