Mozart: Ensure time always runs forward.

services/gfx/compositor/graph/nodes.h

 // Copyright 2015 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 SERVICES_GFX_COMPOSITOR_GRAPH_NODES_H_
 #define SERVICES_GFX_COMPOSITOR_GRAPH_NODES_H_
 
 #include <iosfwd>
 #include <memory>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "mojo/services/gfx/composition/interfaces/nodes.mojom.h"
 #include "services/gfx/compositor/graph/snapshot.h"
 
 class SkCanvas;
 struct SkPoint;
 class SkMatrix44;
 
 namespace compositor {
 
 class SceneContent;
 class SceneContentBuilder;
-class SceneDef;
 class TransformPair;
 
 // Base class for nodes in a scene graph.
 //
 // The base class mainly acts as a container for other nodes and does not
 // draw any content of its own.
 //
 // Instances of this class are immutable and reference counted so they may
 // be shared by multiple versions of the same scene.
 class Node : public base::RefCounted<Node> {
@@ skipping 233 matching lines @@
  private:
   mojo::RectF const layer_rect_;
   mojo::gfx::composition::BlendPtr const blend_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerNode);
 };
 
 }  // namespace compositor
 
 #endif  // SERVICES_GFX_COMPOSITOR_GRAPH_NODES_H_