Animated Rotation

ui/gfx/compositor/compositor_observer.h

+// Copyright (c) 2011 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_GFX_COMPOSITOR_COMPOSITOR_OBSERVER_H_
+#define UI_GFX_COMPOSITOR_COMPOSITOR_OBSERVER_H_
+#pragma once
+
+namespace ui {
+
+// A compositor observer is notified when compositing completes.
+class CompositorObserver {
+ public:
+  // Called when compositing completes.
+  virtual void OnCompositingEnded() = 0;
+
+ protected:
+  virtual ~CompositorObserver() {}
+};
+
+} // namespace ui
+
+#endif // UI_GFX_COMPOSITOR_COMPOSITOR_OBSERVER_H_