Make contracted braille input work in more contexts.

chrome/browser/resources/chromeos/chromevox/braille/spans.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 Objects used in spannables as annotations for ARIA values
  * and selections.
  */
 
+goog.provide('cvox.ExtraCellsSpan');
 goog.provide('cvox.ValueSelectionSpan');
 goog.provide('cvox.ValueSpan');
 
 goog.require('cvox.Spannable');
 
 /**
  * Attached to the value region of a braille spannable.
  * @param {number} offset The offset of the span into the value.
  * @constructor
  */
@@ skipping 36 matching lines @@
  * Attached to the selected text within a value.
  * @constructor
  */
 cvox.ValueSelectionSpan = function() {
 };
 
 
 cvox.Spannable.registerStatelessSerializableSpan(
     cvox.ValueSelectionSpan,
     'cvox.ValueSelectionSpan');
+
+
+/**
+ * Causes raw cells to be added when translating from text to braille.
+ * This is supported by the {@code cvox.ExpandingBrailleTranslator}
+ * class.
+ * @constructor
+ */
+cvox.ExtraCellsSpan = function() {
+  /** @type {ArrayBuffer} */
+  this.cells = new Uint8Array(0).buffer;
+};