chromeos: Move files in //ash/common to //ash

ash/common/system/chromeos/network/network_icon_animation.h

-// Copyright (c) 2013 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.
-
-#ifndef ASH_COMMON_SYSTEM_CHROMEOS_NETWORK_NETWORK_ICON_ANIMATION_H_
-#define ASH_COMMON_SYSTEM_CHROMEOS_NETWORK_NETWORK_ICON_ANIMATION_H_
-
-#include <set>
-#include <string>
-
-#include "ash/ash_export.h"
-#include "base/observer_list.h"
-#include "ui/gfx/animation/animation_delegate.h"
-#include "ui/gfx/animation/throb_animation.h"
-
-namespace ash {
-namespace network_icon {
-
-class AnimationObserver;
-
-// Single instance class to handle icon animations and keep them in sync.
-class ASH_EXPORT NetworkIconAnimation : public gfx::AnimationDelegate {
- public:
-  NetworkIconAnimation();
-  ~NetworkIconAnimation() override;
-
-  // Returns the current animation value, [0-1].
-  double GetAnimation();
-
-  // The animation stops when all observers have been removed.
-  // Be sure to remove observers when no associated icons are animating.
-  void AddObserver(AnimationObserver* observer);
-  void RemoveObserver(AnimationObserver* observer);
-
-  // gfx::AnimationDelegate implementation.
-  void AnimationProgressed(const gfx::Animation* animation) override;
-
-  static NetworkIconAnimation* GetInstance();
-
- private:
-  gfx::ThrobAnimation animation_;
-  base::ObserverList<AnimationObserver> observers_;
-};
-
-}  // namespace network_icon
-}  // namespace ash
-
-#endif  // ASH_COMMON_SYSTEM_CHROMEOS_NETWORK_NETWORK_ICON_ANIMATION_H_