|  | // Copyright 2015 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 WebCompositorAnimationTimeline_h | 
|  | #define WebCompositorAnimationTimeline_h | 
|  |  | 
|  | namespace blink { | 
|  |  | 
|  | class WebCompositorAnimationPlayerClient; | 
|  |  | 
|  | // A compositor representation for timeline. | 
|  | class WebCompositorAnimationTimeline { | 
|  | public: | 
|  | virtual ~WebCompositorAnimationTimeline() { } | 
|  |  | 
|  | virtual void playerAttached(const WebCompositorAnimationPlayerClient&) { } | 
|  | virtual void playerDestroyed(const WebCompositorAnimationPlayerClient&) { } | 
|  | }; | 
|  |  | 
|  | } // namespace blink | 
|  |  | 
|  | #endif // WebCompositorAnimationTimeline_h |