Add multiline braille support.

chrome/browser/resources/chromeos/chromevox/braille/braille_display_manager.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 Puts text on a braille display.
  *
  */
 
 goog.provide('cvox.BrailleDisplayManager');
@@ skipping 139 matching lines @@
 };
 
 
 /**
  * @param {!cvox.BrailleDisplayState} newState Display state reported
  *     by the extension API.
  * @private
  */
 cvox.BrailleDisplayManager.prototype.refreshDisplayState_ = function(
     newState) {
   var oldSize = this.displayState_.textCellCount || 0;

[dmazzoni, 2016/10/11 17:15:39]

You replaced textCellCount with textRowCount and textColumnCount, so you'll need
to update
this and every other place where textCellCount was used in JavaScript.

See comment in externs.js

[ultimatedbz, 2016/10/16 01:12:39]

Done.

   this.realDisplayState_ = newState;
   if (newState.available) {
     this.displayState_ = newState;
   } else {
     this.displayState_ =
         cvox.BrailleCaptionsBackground.getVirtualDisplayState();
   }
   var newSize = this.displayState_.textCellCount || 0;
   if (oldSize != newSize) {
     this.panStrategy_.setDisplaySize(newSize);
@@ skipping 15 matching lines @@
 
 
 /** @private */
 cvox.BrailleDisplayManager.prototype.refresh_ = function() {
   if (!this.displayState_.available) {
     return;
   }
   var viewPort = this.panStrategy_.viewPort;
   var buf = this.displayedContent_.slice(viewPort.start, viewPort.end);
   if (this.realDisplayState_.available) {
-    chrome.brailleDisplayPrivate.writeDots(buf);
+    chrome.brailleDisplayPrivate.writeDots(buf, 1, buf.byteLength);

[dmazzoni, 2016/10/11 17:15:39]

Ideally you can change all of the code inside ChromeVox to keep track of rows
and columns too

   }
   if (cvox.BrailleCaptionsBackground.isEnabled()) {
     var start = this.brailleToTextPosition_(viewPort.start);
     var end = this.brailleToTextPosition_(viewPort.end);
     cvox.BrailleCaptionsBackground.setContent(
         this.content_.text.toString().substring(start, end), buf);
   }
 };
 
 
@@ skipping 179 matching lines @@
  */
 cvox.BrailleDisplayManager.prototype.updatePanStrategy_ = function(wordWrap) {
   var newStrategy = wordWrap ? new cvox.WrappingPanStrategy() :
       new cvox.FixedPanStrategy();
   newStrategy.setDisplaySize(this.displayState_.textCellCount || 0);
   newStrategy.setContent(this.translatedContent_,
                          this.panStrategy_.viewPort.start);
   this.panStrategy_ = newStrategy;
   this.refresh_();
 };