1// Copyright (c) 2010 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef CHROME_BROWSER_CHROMEOS_VOLUME_BUBBLE_H_ 6#define CHROME_BROWSER_CHROMEOS_VOLUME_BUBBLE_H_ 7#pragma once 8 9#include "base/basictypes.h" 10#include "chrome/browser/chromeos/setting_level_bubble.h" 11 12template <typename T> struct DefaultSingletonTraits; 13 14namespace chromeos { 15 16// Singleton class controlling volume bubble. 17class VolumeBubble : public SettingLevelBubble { 18 public: 19 static VolumeBubble* GetInstance(); 20 21 private: 22 friend struct DefaultSingletonTraits<VolumeBubble>; 23 24 VolumeBubble(); 25 virtual ~VolumeBubble() {} 26 27 DISALLOW_COPY_AND_ASSIGN(VolumeBubble); 28}; 29 30} // namespace chromeos 31 32#endif // CHROME_BROWSER_CHROMEOS_VOLUME_BUBBLE_H_ 33