ash: Animate changes in the uber tray.

ash/system/tray_accessibility.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 "ash/system/tray_accessibility.h"
 
 #include "ash/shell.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/tray_constants.h"
 #include "grit/ui_resources.h"
@@ skipping 37 matching lines @@
 
   return detailed_.get();
 }
 
 void TrayAccessibility::DestroyDetailedView() {
   detailed_.reset();
 }
 
 void TrayAccessibility::OnAccessibilityModeChanged(bool enabled,
                                                    int string_id) {
-  if (image_view())
-    image_view()->SetVisible(enabled);
+  if (tray_view())
+    tray_view()->SetVisible(enabled);
 
   if (enabled) {
     string_id_ = string_id;
     PopupDetailedView(kTrayPopupAutoCloseDelayForTextInSeconds, false);
   } else if (detailed_.get()) {
     string_id_ = 0;
     detailed_->GetWidget()->Close();
   }
 }
 
 }  // namespace internal
 }  // namespace ash