Toggle spoken feedback if two fingers are held down.

chrome/browser/ui/ash/chrome_shell_delegate.cc

 // Copyright (c) 2012 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 <stddef.h>
 
 #include <limits>
 
@@ skipping 285 matching lines @@
         case ash::A11Y_ALERT_NONE:
           break;
       }
     }
   }
 
   ash::AccessibilityAlert GetLastAccessibilityAlert() override {
     return ash::A11Y_ALERT_NONE;
   }
 
+  void PlaySpokenFeedbackToggleCountdown(int tick_count) override {
+    DCHECK(AccessibilityManager::Get());
+    AccessibilityManager::Get()->PlaySpokenFeedbackToggleCountdown(tick_count);
+  }
+
   void PlayEarcon(int sound_key) override {
     DCHECK(AccessibilityManager::Get());
     AccessibilityManager::Get()->PlayEarcon(
         sound_key, chromeos::PlaySoundOption::SPOKEN_FEEDBACK_ENABLED);
   }
 
   base::TimeDelta PlayShutdownSound() const override {
     return AccessibilityManager::Get()->PlayShutdownSound();
   }
 
@@ skipping 231 matching lines @@
       NOTREACHED() << "Unexpected notification " << type;
   }
 }
 
 void ChromeShellDelegate::PlatformInit() {
   registrar_.Add(this, chrome::NOTIFICATION_LOGIN_USER_PROFILE_PREPARED,
                  content::NotificationService::AllSources());
   registrar_.Add(this, chrome::NOTIFICATION_SESSION_STARTED,
                  content::NotificationService::AllSources());
 }