ash uber tray: Update the volume icon for various levels of volumes.

ash/system/brightness/tray_brightness.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/brightness/tray_brightness.h"
 
 #include "ash/accelerators/accelerator_controller.h"
 #include "ash/shell.h"
 #include "ash/system/brightness/brightness_control_delegate.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "base/utf_string_conversions.h"
 #include "grit/ui_resources.h"
 #include "ui/base/resource/resource_bundle.h"
 #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/slider.h"
 #include "ui/views/layout/box_layout.h"
 #include "ui/views/controls/image_view.h"
 #include "ui/views/view.h"
 
+namespace ash {
+namespace internal {
+
 namespace tray {
 
 class BrightnessView : public views::View,
                        public views::SliderListener {
  public:
   BrightnessView() {
     SetLayoutManager(new views::BoxLayout(views::BoxLayout::kHorizontal,
           0, 0, 5));
 
     views::ImageView* icon = new views::ImageView();
@@ skipping 36 matching lines @@
     }
   }
 
   views::Slider* slider_;
 
   DISALLOW_COPY_AND_ASSIGN(BrightnessView);
 };
 
 }  // namespace tray
 
-namespace ash {
-namespace internal {
-
 TrayBrightness::TrayBrightness() {}
 
 TrayBrightness::~TrayBrightness() {}
 
 views::View* TrayBrightness::CreateTrayView() {
   return NULL;
 }
 
 views::View* TrayBrightness::CreateDefaultView() {
   brightness_view_.reset(new tray::BrightnessView);
@@ skipping 21 matching lines @@
     brightness_view_->SetBrightnessLevel(percent);
     return;
   }
   if (!user_initiated)
     return;
   PopupDetailedView();
 }
 
 }  // namespace internal
 }  // namespace ash