Eliminate ash::internal namespace

ash/system/drive/tray_drive.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/drive/tray_drive.h"
 
 #include <vector>
 
 #include "ash/metrics/user_metrics_recorder.h"
 #include "ash/shell.h"
@@ skipping 18 matching lines @@
 #include "ui/gfx/image/image.h"
 #include "ui/views/controls/button/image_button.h"
 #include "ui/views/controls/image_view.h"
 #include "ui/views/controls/label.h"
 #include "ui/views/controls/progress_bar.h"
 #include "ui/views/layout/box_layout.h"
 #include "ui/views/layout/grid_layout.h"
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-
-namespace internal {
-
 namespace {
 
 const int kSidePadding = 8;
 const int kHorizontalPadding = 6;
 const int kVerticalPadding = 6;
 const int kTopPadding = 6;
 const int kBottomPadding = 10;
 const int kProgressBarWidth = 100;
 const int kProgressBarHeight = 11;
 const int64 kHideDelayInMs = 1000;
@@ skipping 456 matching lines @@
 void TrayDrive::HideIfNoOperations() {
   DriveOperationStatusList empty_list;
 
   tray_view()->SetVisible(false);
   if (default_)
     default_->Update(&empty_list);
   if (detailed_)
     detailed_->Update(&empty_list);
 }
 
-}  // namespace internal
 }  // namespace ash