Mozart: Rename scene graph classes.

services/gfx/compositor/graph/resource_def.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_RESOURCE_DEF_H_
-#define SERVICES_GFX_COMPOSITOR_GRAPH_RESOURCE_DEF_H_
-
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/weak_ptr.h"
-#include "mojo/services/gfx/composition/interfaces/resources.mojom.h"
-#include "services/gfx/compositor/render/render_image.h"
-
-namespace compositor {
-
-class SceneDef;
-
-// Abstract scene graph resource definition.
-//
-// Instances of this class are immutable and reference counted so they may
-// be shared by multiple versions of the same scene.
-class ResourceDef : public base::RefCounted<ResourceDef> {
- public:
-  enum class Type { kScene, kImage };
-
-  ResourceDef();
-
-  // Gets the resource type.
-  virtual Type type() const = 0;
-
- protected:
-  friend class base::RefCounted<ResourceDef>;
-  virtual ~ResourceDef();
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(ResourceDef);
-};
-
-// Reference to another scene expressed as a resource definition.
-class SceneResourceDef : public ResourceDef {
- public:
-  explicit SceneResourceDef(
-      const mojo::gfx::composition::SceneToken& scene_token,
-      const base::WeakPtr<SceneDef>& referenced_scene);
-
-  Type type() const override;
-
-  const mojo::gfx::composition::SceneToken& scene_token() const {
-    return scene_token_;
-  }
-
-  // The referenced scene, may be null if the scene is unavailable.
-  const base::WeakPtr<SceneDef>& referenced_scene() const {
-    return referenced_scene_;
-  }
-
-  // Returns a copy of the resource without its referenced scene.
-  scoped_refptr<const SceneResourceDef> Unlink() const;
-
- protected:
-  ~SceneResourceDef() override;
-
- private:
-  mojo::gfx::composition::SceneToken scene_token_;
-  base::WeakPtr<SceneDef> referenced_scene_;
-
-  DISALLOW_COPY_AND_ASSIGN(SceneResourceDef);
-};
-
-// Reference to an image expressed as a resource definition.
-class ImageResourceDef : public ResourceDef {
- public:
-  explicit ImageResourceDef(const scoped_refptr<RenderImage>& image);
-
-  Type type() const override;
-
-  // The referenced image, never null.
-  const scoped_refptr<RenderImage>& image() const { return image_; }
-
- protected:
-  ~ImageResourceDef() override;
-
- private:
-  scoped_refptr<RenderImage> image_;
-
-  DISALLOW_COPY_AND_ASSIGN(ImageResourceDef);
-};
-
-}  // namespace compositor
-
-#endif  // SERVICES_GFX_COMPOSITOR_GRAPH_RESOURCE_DEF_H_