Update Google Input Tools

third_party/google_input_tools/third_party/closure_library/closure/goog/a11y/aria/announcer.js

Index: third_party/google_input_tools/third_party/closure_library/closure/goog/a11y/aria/announcer.js
diff --git a/third_party/google_input_tools/third_party/closure_library/closure/goog/a11y/aria/announcer.js b/third_party/google_input_tools/third_party/closure_library/closure/goog/a11y/aria/announcer.js
index ee87199bc9991871f23cebf7d8fbf590fab7c2e6..681826442d35415281171891cbb6a76e88c01bbb 100644
--- a/third_party/google_input_tools/third_party/closure_library/closure/goog/a11y/aria/announcer.js
+++ b/third_party/google_input_tools/third_party/closure_library/closure/goog/a11y/aria/announcer.js
@@ -21,10 +21,12 @@
 goog.provide('goog.a11y.aria.Announcer');
 
 goog.require('goog.Disposable');
+goog.require('goog.Timer');
 goog.require('goog.a11y.aria');
 goog.require('goog.a11y.aria.LivePriority');
 goog.require('goog.a11y.aria.State');
 goog.require('goog.dom');
+goog.require('goog.dom.TagName');
 goog.require('goog.object');
 
 
@@ -50,7 +52,7 @@ goog.a11y.aria.Announcer = function(opt_domHelper) {
   /**
    * Map of priority to live region elements to use for communicating updates.
    * Elements are created on demand.
-   * @type {Object.<goog.a11y.aria.LivePriority, !Element>}
+   * @type {Object<goog.a11y.aria.LivePriority, !Element>}
    * @private
    */
   this.liveRegions_ = {};
@@ -76,8 +78,17 @@ goog.a11y.aria.Announcer.prototype.disposeInternal = function() {
  *     message. Defaults to POLITE.
  */
 goog.a11y.aria.Announcer.prototype.say = function(message, opt_priority) {
-  goog.dom.setTextContent(this.getLiveRegion_(
-      opt_priority || goog.a11y.aria.LivePriority.POLITE), message);
+  var priority = opt_priority || goog.a11y.aria.LivePriority.POLITE;
+  var liveRegion = this.getLiveRegion_(priority);
+  // Resets text content to force a DOM mutation (so that the setTextContent
+  // post-timeout function will be noticed by the screen reader). This is to
+  // avoid the problem of when the same message is "said" twice, which doesn't
+  // trigger a DOM mutation.
+  goog.dom.setTextContent(liveRegion, '');
+  // Uses non-zero timer to make VoiceOver and NVDA work
+  goog.Timer.callOnce(function() {
+    goog.dom.setTextContent(liveRegion, message);
+  }, 1);
 };
 
 
@@ -94,7 +105,8 @@ goog.a11y.aria.Announcer.prototype.getLiveRegion_ = function(priority) {
     goog.a11y.aria.removeState(liveRegion, goog.a11y.aria.State.HIDDEN);
     return liveRegion;
   }
-  liveRegion = this.domHelper_.createElement('div');
+
+  liveRegion = this.domHelper_.createElement(goog.dom.TagName.DIV);
   // Note that IE has a habit of declaring things that aren't display:none as
   // invisible to third-party tools like JAWs, so we can't just use height:0.
   liveRegion.style.position = 'absolute';