Revert "Rename polymer and cr_elements v0_8 to v1_0"

third_party/polymer/v1_0/components/iron-a11y-announcer/iron-a11y-announcer.html

-<!--
-@license
-Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
--->
-
-<link rel="import" href="../polymer/polymer.html">
-
-<!--
-`iron-a11y-announcer` is a singleton element that is intended to add a11y
-to features that require on-demand announcement from screen readers. In
-order to make use of the announcer, it is best to request its availability
-in the announcing element.
-
-Example:
-
-    Polymer({
-
-      is: 'x-chatty',
-
-      attached: function() {
-        // This will create the singlton element if it has not
-        // been created yet:
-        Polymer.IronA11yAnnouncer.requestAvailability();
-      }
-    });
-
-After the `iron-a11y-announcer` has been made available, elements can
-make announces by firing bubbling `iron-announce` events.
-
-Example:
-
-    this.fire('iron-announce', {
-      text: 'This is an announcement!'
-    }, { bubbles: true });
-
-Note: announcements are only audible if you have a screen reader enabled.
-
-@group Iron Elements
-@demo demo/index.html
--->
-
-<dom-module id="iron-a11y-announcer">
-  <style>
-    :host {
-      display: inline-block;
-      position: fixed;
-      clip: rect(0px,0px,0px,0px);
-    }
-  </style>
-
-  <template>
-    <span aria-live$="[[mode]]">[[_text]]</span>
-  </template>
-
-  <script>
-
-    (function() {
-      'use strict';
-
-      Polymer.IronA11yAnnouncer = Polymer({
-        is: 'iron-a11y-announcer',
-
-        properties: {
-
-          /**
-           * The value of mode is used to set the `aria-live` attribute
-           * for the element that will be announced. Valid values are: `off`,
-           * `polite` and `assertive`.
-           */
-          mode: {
-            type: String,
-            value: 'polite'
-          },
-
-          _text: {
-            type: String,
-            value: ''
-          }
-        },
-
-        created: function() {
-          if (!Polymer.IronA11yAnnouncer.instance) {
-            Polymer.IronA11yAnnouncer.instance = this;
-          }
-
-          document.body.addEventListener('iron-announce', this._onIronAnnounce.bind(this));
-        },
-
-        /**
-         * Cause a text string to be announced by screen readers.
-         *
-         * @param {string} text The text that should be announced.
-         */
-        announce: function(text) {
-          this._text = '';
-          this.async(function() {
-            this._text = text;
-          }, 100);
-        },
-
-        _onIronAnnounce: function(event) {
-          if (event.detail && event.detail.text) {
-            this.announce(event.detail.text);
-          }
-        }
-      });
-
-      Polymer.IronA11yAnnouncer.instance = null;
-
-      Polymer.IronA11yAnnouncer.requestAvailability = function() {
-        if (!Polymer.IronA11yAnnouncer.instance) {
-          document.createElement('iron-a11y-announcer');
-        }
-
-        document.body.appendChild(Polymer.IronA11yAnnouncer.instance);
-      };
-    })();
-
-  </script>
-</dom-module>