Spoken feedback sounds for user photo capture/discard at image picker added.

chrome/browser/resources/chromeos/login/screen_locally_managed_user_creation.js

Index: chrome/browser/resources/chromeos/login/screen_locally_managed_user_creation.js
diff --git a/chrome/browser/resources/chromeos/login/screen_locally_managed_user_creation.js b/chrome/browser/resources/chromeos/login/screen_locally_managed_user_creation.js
index 5fd61df5d7fe11f68d5a2b26bc77d48c473b8a0b..eab470ffb9b906d5e19c3ca44c9ff9439c408a8a 100644
--- a/chrome/browser/resources/chromeos/login/screen_locally_managed_user_creation.js
+++ b/chrome/browser/resources/chromeos/login/screen_locally_managed_user_creation.js
@@ -546,10 +546,7 @@ login.createScreen('LocallyManagedUserCreationScreen',
 
       // Toggle 'animation' class for the duration of WebKit transition.
       this.getScreenElement('flip-photo').addEventListener(
-          'click', function(e) {
-            previewElement.classList.add('animation');
-            imageGrid.flipPhoto = !imageGrid.flipPhoto;
-          });
+          'click', this.handleFlipPhoto_.bind(this));
       this.getScreenElement('image-stream-crop').addEventListener(
           'webkitTransitionEnd', function(e) {
             previewElement.classList.remove('animation');
@@ -1446,10 +1443,24 @@ login.createScreen('LocallyManagedUserCreationScreen',
     },
 
     /**
+     * Handle camera-photo flip.
+     */
+    handleFlipPhoto_: function() {
+      var imageGrid = this.getScreenElement('image-grid');
+      imageGrid.previewElement.classList.add('animation');
+      imageGrid.flipPhoto = !imageGrid.flipPhoto;
+      var flipMessageId = imageGrid.flipPhoto ?
+         'photoFlippedAccessibleText' : 'photoFlippedBackAccessibleText';
+      this.announceAccessibleMessage_(
+          loadTimeData.getString(flipMessageId));
+    },
+
+    /**
      * Handle photo capture from the live camera stream.
      */
     handleTakePhoto_: function(e) {
       this.getScreenElement('image-grid').takePhoto();
+      chrome.send('takePhoto');
     },
 
     handlePhotoTaken_: function(e) {
@@ -1470,8 +1481,28 @@ login.createScreen('LocallyManagedUserCreationScreen',
     handleDiscardPhoto_: function(e) {
       var imageGrid = this.getScreenElement('image-grid');
       imageGrid.discardPhoto();
+      chrome.send('discardPhoto');
     },
 
+    /**
+     * Add an accessible message to the page that will be announced to
+     * users who have spoken feedback on, but will be invisible to all
+     * other users. It's removed right away so it doesn't clutter the DOM.
+     */
+    announceAccessibleMessage_: function(msg) {
+      var element = document.createElement('div');
+      element.setAttribute('aria-live', 'polite');
+      element.style.position = 'relative';
+      element.style.left = '-9999px';
+      element.style.height = '0px';
+      element.innerText = msg;
+      document.body.appendChild(element);
+      window.setTimeout(function() {
+        document.body.removeChild(element);
+      }, 0);
+    },
+
+
     setCameraPresent: function(present) {
       this.getScreenElement('image-grid').cameraPresent = present;
     },