Make chrome/browser/chromeos/accessibility compile on Athena with use_ash=0

ash/system/tray/system_tray_notifier.h

 // 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.
 
 #ifndef ASH_SYSTEM_TRAY_SYSTEM_TRAY_NOTIFIER_H_
 #define ASH_SYSTEM_TRAY_SYSTEM_TRAY_NOTIFIER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 87 matching lines @@
   void RemoveScreenCaptureObserver(ScreenCaptureObserver* observer);
 
   void AddScreenShareObserver(ScreenShareObserver* observer);
   void RemoveScreenShareObserver(ScreenShareObserver* observer);
 
   void AddLastWindowClosedObserver(LastWindowClosedObserver* observer);
   void RemoveLastWindowClosedObserver(LastWindowClosedObserver* observer);
 #endif
 
   void NotifyAccessibilityModeChanged(
-      AccessibilityNotificationVisibility notify);
+      ui::AccessibilityNotificationVisibility notify);
   void NotifyAudioOutputVolumeChanged();
   void NotifyAudioOutputMuteChanged();
   void NotifyAudioNodesChanged();
   void NotifyAudioActiveOutputNodeChanged();
   void NotifyAudioActiveInputNodeChanged();
   void NotifyTracingModeChanged(bool value);
   void NotifyRefreshBluetooth();
   void NotifyBluetoothDiscoveringChanged();
   void NotifyRefreshClock();
   void NotifyDateFormatChanged();
@@ skipping 52 matching lines @@
   ObserverList<LastWindowClosedObserver> last_window_closed_observers_;
   scoped_ptr<NetworkStateNotifier> network_state_notifier_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(SystemTrayNotifier);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_SYSTEM_TRAY_NOTIFIER_H_