Eliminate ash::internal namespace

ash/system/tray/tray_utils.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/tray_utils.h"
 
 #include "ash/system/tray/tray_constants.h"
 #include "ash/system/tray/tray_item_view.h"
 #include "ui/gfx/font_list.h"
 #include "ui/views/border.h"
 #include "ui/views/controls/label.h"
 
 namespace ash {
-namespace internal {
 
 void SetupLabelForTray(views::Label* label) {
   // Making label_font static to avoid the time penalty of Derive for all but
   // the first call.
   static const gfx::FontList label_font_list(
       gfx::FontList().Derive(1, gfx::Font::BOLD));
   label->SetFontList(label_font_list);
   label->SetAutoColorReadabilityEnabled(false);
   label->SetEnabledColor(SK_ColorWHITE);
   label->SetBackgroundColor(SkColorSetARGB(0, 255, 255, 255));
@@ skipping 35 matching lines @@
         (tray_view->GetPreferredSize().width() -
         tray_view->label()->GetPreferredSize().width()) / 2);
     tray_view->SetBorder(views::Border::CreateEmptyBorder(
         kTrayLabelItemVerticalPaddingVerticalAlignment,
         horizontal_padding,
         kTrayLabelItemVerticalPaddingVerticalAlignment,
         horizontal_padding));
   }
 }
 
-}  // namespace internal
 }  // namespace ash