Show a notification when a braille display is connected.

chrome/browser/ui/ash/chrome_shell_delegate_chromeos.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/ui/ash/chrome_shell_delegate.h"
 
 #include "ash/accelerators/magnifier_key_scroller.h"
 #include "ash/accelerators/spoken_feedback_toggler.h"
 #include "ash/accessibility_delegate.h"
 #include "ash/media_delegate.h"
@@ skipping 130 matching lines @@
     DCHECK(chromeos::AccessibilityManager::Get());
     return chromeos::AccessibilityManager::Get()->IsVirtualKeyboardEnabled();
   }
 
   virtual bool ShouldShowAccessibilityMenu() const OVERRIDE {
     DCHECK(chromeos::AccessibilityManager::Get());
     return chromeos::AccessibilityManager::Get()->
         ShouldShowAccessibilityMenu();
   }
 
+  virtual bool IsBrailleDisplayConnected() OVERRIDE {
+    DCHECK(chromeos::AccessibilityManager::Get());
+    return chromeos::AccessibilityManager::Get()->IsBrailleDisplayConnected();
+  }
+
   virtual void SilenceSpokenFeedback() const OVERRIDE {
     TtsController::GetInstance()->Stop();
   }
 
   virtual void SaveScreenMagnifierScale(double scale) OVERRIDE {
     if (chromeos::MagnificationManager::Get())
       chromeos::MagnificationManager::Get()->SaveScreenMagnifierScale(scale);
   }
 
   virtual double GetSavedScreenMagnifierScale() OVERRIDE {
@@ skipping 138 matching lines @@
   registrar_.Add(this,
                  chrome::NOTIFICATION_LOGIN_USER_PROFILE_PREPARED,
                  content::NotificationService::AllSources());
   registrar_.Add(this,
                  chrome::NOTIFICATION_SESSION_STARTED,
                  content::NotificationService::AllSources());
   registrar_.Add(this,
                  chrome::NOTIFICATION_APP_TERMINATING,
                  content::NotificationService::AllSources());
 }