Eliminate ash::internal namespace

ash/default_accessibility_delegate.cc

 // Copyright 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.
 
 #include "ash/default_accessibility_delegate.h"
 
 #include <limits>
 
 namespace ash {
-namespace internal {
 
 DefaultAccessibilityDelegate::DefaultAccessibilityDelegate()
     : spoken_feedback_enabled_(false),
       high_contrast_enabled_(false),
       screen_magnifier_enabled_(false),
       screen_magnifier_type_(kDefaultMagnifierType),
       large_cursor_enabled_(false),
       autoclick_enabled_(false),
       virtual_keyboard_enabled_(false),
       accessibility_alert_(A11Y_ALERT_NONE) {
@@ skipping 87 matching lines @@
 }
 
 AccessibilityAlert DefaultAccessibilityDelegate::GetLastAccessibilityAlert() {
   return accessibility_alert_;
 }
 
 base::TimeDelta DefaultAccessibilityDelegate::PlayShutdownSound() const {
   return base::TimeDelta();
 }
 
-}  // namespace internal
 }  // namespace ash