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

ash/ash_touch_exploration_manager_chromeos.cc

 // Copyright 2014 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/ash_touch_exploration_manager_chromeos.h"
 
 #include "ash/accessibility_delegate.h"
 #include "ash/audio/sounds.h"
 #include "ash/root_window_controller.h"
 #include "ash/shell.h"
@@ skipping 15 matching lines @@
 }
 
 AshTouchExplorationManager::~AshTouchExplorationManager() {
   SystemTrayNotifier* system_tray_notifier =
       Shell::GetInstance()->system_tray_notifier();
   if (system_tray_notifier)
     system_tray_notifier->RemoveAccessibilityObserver(this);
 }
 
 void AshTouchExplorationManager::OnAccessibilityModeChanged(
-    AccessibilityNotificationVisibility notify) {
+    ui::AccessibilityNotificationVisibility notify) {
   UpdateTouchExplorationState();
 }
 
 void AshTouchExplorationManager::SetOutputLevel(int volume) {
   if (volume > 0) {
     if (audio_handler_->IsOutputMuted()) {
       audio_handler_->SetOutputMute(false);
     }
   }
   audio_handler_->SetOutputVolumePercent(volume);
@@ skipping 45 matching lines @@
     touch_exploration_controller_.reset();
   }
 }
 
 bool AshTouchExplorationManager::VolumeAdjustSoundEnabled() {
   return !CommandLine::ForCurrentProcess()->HasSwitch(
       chromeos::switches::kDisableVolumeAdjustSound);
 }
 
 }  // namespace ash