Eliminate ash::internal namespace

ash/system/tray/tray_item_view.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_item_view.h"
 
 #include "ash/shelf/shelf_types.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/system/tray/system_tray_item.h"
 #include "ui/compositor/layer.h"
 #include "ui/gfx/animation/slide_animation.h"
 #include "ui/views/controls/image_view.h"
 #include "ui/views/controls/label.h"
 #include "ui/views/layout/box_layout.h"
 #include "ui/views/widget/widget.h"
 
 namespace {
 const int kTrayIconHeight = 29;
 const int kTrayIconWidth = 29;
 const int kTrayItemAnimationDurationMS = 200;
 
 // Animations can be disabled for testing.
 bool animations_enabled = true;
 }
 
 namespace ash {
-namespace internal {
 
 TrayItemView::TrayItemView(SystemTrayItem* owner)
     : owner_(owner),
       label_(NULL),
       image_view_(NULL) {
   SetPaintToLayer(true);
   SetFillsBoundsOpaquely(false);
   SetLayoutManager(
       new views::BoxLayout(views::BoxLayout::kHorizontal, 0, 0, 0));
 }
@@ skipping 92 matching lines @@
 
 void TrayItemView::AnimationEnded(const gfx::Animation* animation) {
   if (animation->GetCurrentValue() < 0.1)
     views::View::SetVisible(false);
 }
 
 void TrayItemView::AnimationCanceled(const gfx::Animation* animation) {
   AnimationEnded(animation);
 }
 
-}  // namespace internal
 }  // namespace ash