Remove Polymer 0.5.

ui/webui/resources/cr_elements/cr_checkbox/cr_checkbox.js

-// Copyright 2015 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
- * `cr-checkbox` is a button that can be either checked or unchecked. User
- * can tap the checkbox to check or uncheck it. Usually you use checkboxes
- * to allow user to select multiple options from a set. If you have a single
- * ON/OFF option, avoid using a single checkbox and use `cr-toggle-button`
- * instead.
- *
- * Example:
- *     <cr-checkbox></cr-checkbox>
- *     <cr-checkbox checked></cr-checkbox>
- *
- * @element cr-checkbox
- */
-Polymer({
-  publish: {
-    /**
-     * Gets or sets the state. `true` is checked and `false` is unchecked.
-     *
-     * @attribute checked
-     * @type boolean
-     * @default false
-     */
-    checked: {value: false, reflect: true},
-
-    /**
-     * The label for the checkbox.
-     *
-     * @attribute label
-     * @type string
-     * @default ''
-     */
-    label: '',
-
-    /**
-     * If true, the user cannot interact with this element.
-     *
-     * @attribute disabled
-     * @type boolean
-     * @default false
-     */
-    disabled: {value: false, reflect: true},
-  },
-
-  toggle: function() {
-    this.$.checkbox.toggle();
-  },
-
-  ready: function() {
-    this.$.events.forward(this.$.checkbox, ['change']);
-  },
-});