Show a notification when a braille display is connected.

ash/default_accessibility_delegate.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 "ash/default_accessibility_delegate.h"
 
 #include <limits>
 
 namespace ash {
 namespace internal {
@@ skipping 65 matching lines @@
 
 bool DefaultAccessibilityDelegate::ShouldShowAccessibilityMenu() const {
   return spoken_feedback_enabled_ ||
          high_contrast_enabled_ ||
          screen_magnifier_enabled_ ||
          large_cursor_enabled_ ||
          autoclick_enabled_ ||
          virtual_keyboard_enabled_;
 }
 
+bool DefaultAccessibilityDelegate::IsBrailleDisplayConnected() const {
+  return false;
+}
+
 void DefaultAccessibilityDelegate::SilenceSpokenFeedback() const {
 }
 
 void DefaultAccessibilityDelegate::ToggleSpokenFeedback(
     AccessibilityNotificationVisibility notify) {
   spoken_feedback_enabled_ = !spoken_feedback_enabled_;
 }
 
 void DefaultAccessibilityDelegate::SaveScreenMagnifierScale(double scale) {
 }
@@ skipping 10 matching lines @@
 AccessibilityAlert DefaultAccessibilityDelegate::GetLastAccessibilityAlert() {
   return accessibility_alert_;
 }
 
 base::TimeDelta DefaultAccessibilityDelegate::PlayShutdownSound() const {
   return base::TimeDelta();
 }
 
 }  // namespace internal
 }  // namespace ash