Eliminate ash::internal namespace

ash/system/tray/tray_popup_label_button_border.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/system/tray/tray_popup_label_button_border.h"
 
 #include "base/i18n/rtl.h"
 #include "grit/ash_resources.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/vector2d.h"
 #include "ui/native_theme/native_theme.h"
 #include "ui/views/controls/button/label_button.h"
 #include "ui/views/native_theme_delegate.h"
 
 namespace ash {
-namespace internal {
 
 TrayPopupLabelButtonBorder::TrayPopupLabelButtonBorder()
     : LabelButtonBorder(views::Button::STYLE_TEXTBUTTON) {
   const int kTrayPopupLabelButtonBorderImagesNormal[] = {
       IDR_AURA_TRAY_POPUP_LABEL_BUTTON_BORDER,
       IDR_AURA_TRAY_POPUP_LABEL_BUTTON_NORMAL_BACKGROUND,
       IDR_AURA_TRAY_POPUP_LABEL_BUTTON_NORMAL_BACKGROUND,
       IDR_AURA_TRAY_POPUP_LABEL_BUTTON_BORDER,
       IDR_AURA_TRAY_POPUP_LABEL_BUTTON_NORMAL_BACKGROUND,
       IDR_AURA_TRAY_POPUP_LABEL_BUTTON_NORMAL_BACKGROUND,
@@ skipping 63 matching lines @@
     canvas->Save();
     canvas->Translate(gfx::Vector2d(view.width(), 0));
     canvas->Scale(-1, 1);
     LabelButtonBorder::Paint(view, canvas);
     canvas->Restore();
   } else {
     LabelButtonBorder::Paint(view, canvas);
   }
 }
 
-}  // namespace internal
 }  // namespace ash