Makes View::RecreateLayer() and Window::RecreateLayer() the same

ui/compositor/clone_layer.h

+// 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_CLONE_LAYER_H_
+#define UI_COMPOSITOR_CLONE_LAYER_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "ui/compositor/compositor_export.h"
+
+namespace ui {
+
+class Layer;
+class LayerOwner;
+
+// Creates a new Layer for |layer_owner| returning the old. This does NOT
+// recurse. All the existing children of the layer are moved to the new layer.
+// This does nothing if |layer_owner| currently has no layer.
+COMPOSITOR_EXPORT scoped_ptr<ui::Layer> CloneLayer(LayerOwner* layer_owner);
+
+}  // namespace ui
+
+#endif  // UI_COMPOSITOR_CLONE_LAYER_H_