Debugging test failures from https://codereview.chromium.org/291843012/

ui/compositor/test/layer_animator_collection_test_controller.h

Index: ui/compositor/test/layer_animator_collection_test_controller.h
diff --git a/ui/compositor/test/layer_animator_collection_test_controller.h b/ui/compositor/test/layer_animator_collection_test_controller.h
new file mode 100644
index 0000000000000000000000000000000000000000..e305b5443cfc4a5d9d2dd7c7fb1c494a9e559e27
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+++ b/ui/compositor/test/layer_animator_collection_test_controller.h
@@ -0,0 +1,29 @@
+// Copyright 2014 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_TEST_LAYER_ANIMATOR_COLLECTION_TEST_CONTROLLER_H_
+#define UI_COMPOSITOR_TEST_LAYER_ANIMATOR_COLLECTION_TEST_CONTROLLER_H_
+
+#include "ui/compositor/layer_animator_collection.h"
+
+namespace ui {
+
+// Allows tests to access the animators in the collection.
+class LayerAnimatorCollectionTestController {
+ public:
+  explicit LayerAnimatorCollectionTestController(
+      LayerAnimatorCollection* collection);
+  ~LayerAnimatorCollectionTestController();
+
+  void StopAllAnimators();
+
+ private:
+  LayerAnimatorCollection* collection_;
+
+  DISALLOW_COPY_AND_ASSIGN(LayerAnimatorCollectionTestController);
+};
+
+}  // namespace ui
+
+#endif  // UI_COMPOSITOR_TEST_LAYER_ANIMATOR_COLLECTION_TEST_CONTROLLER_H_