Allows observers to be notified when layer animations complete.

ui/gfx/compositor/test_layer_animation_observer.h

Index: ui/gfx/compositor/test_layer_animation_observer.h
diff --git a/ui/gfx/compositor/test_layer_animation_observer.h b/ui/gfx/compositor/test_layer_animation_observer.h
new file mode 100644
index 0000000000000000000000000000000000000000..879c74ba7af7803f40f485bf4a94eb40a19dce8c
--- /dev/null
+++ b/ui/gfx/compositor/test_layer_animation_observer.h
@@ -0,0 +1,57 @@
+// 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_TEST_LAYER_ANIMATION_OBSERVER_
+#define UI_GFX_COMPOSITOR_TEST_LAYER_ANIMATION_OBSERVER_
+#pragma once
+
+#include "base/compiler_specific.h"
+#include "ui/gfx/compositor/compositor_export.h"
+#include "ui/gfx/compositor/layer_animation_observer.h"
+
+namespace ui {
+
+class LayerAnimationSequence;
+
+// Listens to animation ended notifications. Remembers the last sequence that
+// it was notified about.
+class COMPOSITOR_EXPORT TestLayerAnimationObserver
+    : public LayerAnimationObserver {
+ public:
+  TestLayerAnimationObserver();
+  virtual ~TestLayerAnimationObserver();
+
+  virtual void OnLayerAnimationEnded(
+      const LayerAnimationSequence* sequence) OVERRIDE;
+
+  virtual void OnLayerAnimationAborted(
+      const LayerAnimationSequence* sequence) OVERRIDE;
+
+  virtual void OnLayerAnimationScheduled(
+      const LayerAnimationSequence* sequence) OVERRIDE;
+

[sky, 2011/10/28 22:11:38]

nit: remove line.

+
+  const LayerAnimationSequence* last_ended_sequence() const {
+    return last_ended_sequence_;
+  }
+
+  const LayerAnimationSequence* last_scheduled_sequence() const {
+    return last_scheduled_sequence_;
+  }
+
+  const LayerAnimationSequence* last_aborted_sequence() const {
+    return last_aborted_sequence_;
+  }
+
+ private:
+  const LayerAnimationSequence* last_ended_sequence_;
+  const LayerAnimationSequence* last_scheduled_sequence_;
+  const LayerAnimationSequence* last_aborted_sequence_;
+
+  // Copy and assign are allowed.
+};
+
+}  // namespace ui
+
+#endif  // UI_GFX_COMPOSITOR_TEST_LAYER_ANIMATION_OBSERVER_