| // Copyright 2019 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 UI_GL_VSYNC_OBSERVER_H_ | |
| #define UI_GL_VSYNC_OBSERVER_H_ | |
| namespace gl { | |
| class GL_EXPORT VSyncObserver { | |
| public: | |
| // Called on vsync thread. | |
| virtual void OnVSync(base::TimeTicks vsync_time, | |
| base::TimeDelta interval) = 0; | |
| protected: | |
| virtual ~VSyncObserver() {} | |
| }; | |
| } // namespace gl | |
| #endif // UI_GL_VSYNC_OBSERVER_H_ |