Add multiline braille support.

chrome/browser/resources/chromeos/chromevox/braille/braille_display_manager_test.unitjs

 // 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.
 
 // Include test fixture.
 GEN_INCLUDE(['../testing/chromevox_unittest_base.js',
              '../testing/fake_objects.js']);
 
 /**
  * Test fixture.
@@ skipping 31 matching lines @@
     }.bind(this);
     this.writtenCells = [];
     chrome.brailleDisplayPrivate.writeDots = function(cells) {
       this.writtenCells.push(cells);
     }.bind(this);
     chrome.brailleDisplayPrivate.onDisplayStateChanged = new FakeChromeEvent();
     chrome.brailleDisplayPrivate.onKeyEvent = new FakeChromeEvent();
   },
 
   displayAvailable: function() {
-    this.displayState = {available: true, textCellCount: this.DISPLAY_SIZE};
+    this.displayState = {available: true, textRowCount: 1, textColumnCount: this.DISPLAY_SIZE};
   },
 
   /**
    * Asserts display pan position and selection markers on the last written
    * display content and clears it.  There must be exactly one
    * set of cells written.
    * @param {number} start expected pan position
    * @param {number=} opt_selStart first cell (relative to buffer start that
    *                               should have a selection
    * @param {number=} opt_selEnd last cell that should have a selection.
@@ skipping 282 matching lines @@
   var text = 'knowledgeIsPower';
   var translated = '1X23X45678';
   var mapping = [0, 9, 9, 10, 11, 11, 12, 13, 14, 15];
   var expected = [['knowledge', '1'], ['I', 'X2'], ['s', '3'], ['P', 'X4'],
                            ['o', '5'], ['w', '6'], ['e', '7'], ['r', '8']];
 
   var groups = cvox.BrailleCaptionsBackground.groupBrailleAndText(
                                                      translated, text, mapping);
   this.assertGroupsValid(groups, expected);
 });