Add cr-toggle-button to Chrome

ui/webui/resources/cr_elements/cr_toggle_button/cr-toggle-button.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-toggle-button` provides a switch the user can toggle on or off by
+ * tapping or by dragging. Wraps a `paper-toggle-button`.
+ *
+ * Example:
+ *
+ *    <cr-toggle-button></cr-toggle-button>
+ *
+ * @element cr-toggle-button
+ */
+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,
+    },
+
+    /**

[James Hawkins, 2015/02/09 22:24:35]

nit: Double blank line above this JSDoc.

[michaelpg, 2015/02/09 23:08:31]

Done.

+     * If true, the toggle button is disabled.
+     *
+     * @attribute disabled
+     * @type boolean
+     * @default false
+     */
+    disabled: {
+      value: false,
+      reflect: true,
+    },
+  },
+
+  ready: function() {
+    this.$.events.forward(this.$.button, ['change']);
+  },
+});