Add multiline braille support.

chrome/browser/extensions/api/braille_display_private/braille_display_private_api.cc

 // Copyright 2013 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 "chrome/browser/extensions/api/braille_display_private/braille_display_private_api.h"
 
 #include <utility>
 
 #include "base/lazy_instance.h"
 #include "build/build_config.h"
@@ skipping 151 matching lines @@
 BrailleDisplayPrivateWriteDotsFunction() {
 }
 
 BrailleDisplayPrivateWriteDotsFunction::
 ~BrailleDisplayPrivateWriteDotsFunction() {
 }
 
 bool BrailleDisplayPrivateWriteDotsFunction::Prepare() {
   params_ = WriteDots::Params::Create(*args_);
   EXTENSION_FUNCTION_VALIDATE(params_);
+  EXTENSION_FUNCTION_VALIDATE(
+      params_->cells.size() >=
+      static_cast<size_t>(params_->columns * params_->rows));
   return true;
 }
 
 void BrailleDisplayPrivateWriteDotsFunction::Work() {
-  BrailleController::GetInstance()->WriteDots(params_->cells);
+  BrailleController::GetInstance()->WriteDots(params_->cells, params_->columns,
+                                              params_->rows);
 }
 
 bool BrailleDisplayPrivateWriteDotsFunction::Respond() {
   return true;
 }
 }  // namespace api
 }  // namespace extensions