Display images in multiline Braille

chrome/browser/resources/chromeos/chromevox/host/chrome/braille.js

 // Copyright 2014 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 Bridge that sends Braille messages from content scripts or
  * other pages to the main background page.
  *
  */
 
@@ skipping 54 matching lines @@
 
   var message = {'target': 'BRAILLE',
                  'action': 'write',
                  'params': outParams,
                  'contentId' : this.lastContentId_};
 
   cvox.ExtensionBridge.send(message);
 };
 
 
+/** @override */
+cvox.ChromeBraille.prototype.writeRawImage = function(imageDataUrl) {
+  // Do Nothing.
+};
+
+
+/** @override */
+cvox.ChromeBraille.prototype.freeze = function() {
+  // Do Nothing.
+};
+
+
+/** @override */
+cvox.ChromeBraille.prototype.thaw = function() {
+  // Do Nothing.
+};
+
+
+/** @override */
+cvox.ChromeBraille.prototype.getDisplayState = function() {
+  return {available: false, textRowCount: 0, textColumnCount: 0};
+};
+
+
 /** @private */
 cvox.ChromeBraille.prototype.updateLastContentId_ = function() {
   this.lastContentId_ = cvox.ExtensionBridge.uniqueId() + '.' +
       this.nextLocalId_++;
 };
 
 
 /**
  * Dispatches braille input commands.
  * @param {!cvox.BrailleKeyEvent} brailleEvt The braille key event.
@@ skipping 16 matching lines @@
  * Overrides the key event handler
  * @param {function(!cvox.BrailleKeyEvent, cvox.NavBraille):void} listener
  */
 cvox.ChromeBraille.prototype.setKeyEventHandlerForTest = function(listener) {
   this.onKeyEvent_ = listener;
 };
 
 
 /** Export platform constructor. */
 cvox.HostFactory.brailleConstructor = cvox.ChromeBraille;