Turn back spoken feedback setting into a system-wide (non-per-user) preference

chrome/browser/chromeos/accessibility/accessibility_manager.h

 // Copyright (c) 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_ACCESSIBILITY_ACCESSIBILITY_MANAGER_H_
 #define CHROME_BROWSER_CHROMEOS_ACCESSIBILITY_ACCESSIBILITY_MANAGER_H_
 
 #include <set>
 
 #include "ash/accessibility_delegate.h"
@@ skipping 182 matching lines @@
 
   // Set of profiles ChromeVox is loaded to.
   std::set<Profile*> chromevox_profiles_;
 
   content::NotificationRegistrar notification_registrar_;
   scoped_ptr<PrefChangeRegistrar> pref_change_registrar_;
   scoped_ptr<PrefChangeRegistrar> local_state_pref_change_registrar_;
   scoped_ptr<ash::ScopedSessionStateObserver> session_state_observer_;
 
   PrefHandler large_cursor_pref_handler_;
-  PrefHandler spoken_feedback_pref_handler_;
   PrefHandler high_contrast_pref_handler_;
   PrefHandler autoclick_pref_handler_;
   PrefHandler autoclick_delay_pref_handler_;
 
   bool large_cursor_enabled_;
   bool sticky_keys_enabled_;
   bool spoken_feedback_enabled_;
   bool high_contrast_enabled_;
   bool autoclick_enabled_;
   int autoclick_delay_ms_;
 
   ash::AccessibilityNotificationVisibility spoken_feedback_notification_;
 
   base::WeakPtrFactory<AccessibilityManager> weak_ptr_factory_;
 
   bool should_speak_chrome_vox_announcements_on_user_screen_;
 
   bool system_sounds_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(AccessibilityManager);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_ACCESSIBILITY_ACCESSIBILITY_MANAGER_H_