Index: ui/compositor/layer_observer.h |
diff --git a/ui/compositor/layer_observer.h b/ui/compositor/layer_observer.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..e1a7ee5f2fe3bb41e0aaf2af64db3d7e2caba714 |
--- /dev/null |
+++ b/ui/compositor/layer_observer.h |
@@ -0,0 +1,26 @@ |
+// Copyright 2016 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_COMPOSITOR_LAYER_OBSERVER_H_ |
+#define UI_COMPOSITOR_LAYER_OBSERVER_H_ |
+ |
+#include "ui/compositor/compositor_export.h" |
+ |
+namespace ui { |
+ |
+class Layer; |
+ |
+class COMPOSITOR_EXPORT LayerObserver { |
+ public: |
+ virtual void DidPaintLayer(Layer* layer, const gfx::Rect& region) {} |
+ virtual void SurfaceChanged(Layer* layer) {} |
+ virtual void LayerDestroyed(Layer* layer) {} |
+ |
+ protected: |
+ virtual ~LayerObserver() {} |
+}; |
+ |
+} // namespace ui |
+ |
+#endif // UI_COMPOSITOR_LAYER_OBSERVER_H_ |