cc: Nine patch layer.

cc/image_layer_updater.h

+// Copyright 2012 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 ImageLayerUpdater_h
+#define ImageLayerUpdater_h
+
+#include "config.h"
+
+#include "cc/layer_updater.h"
+
+namespace cc {
+
+class ResourceUpdateQueue;
+
+class ImageLayerUpdater : public LayerUpdater {
+public:
+    class Resource : public LayerUpdater::Resource {
+    public:
+        Resource(ImageLayerUpdater* updater, scoped_ptr<PrioritizedTexture> texture)
+            : LayerUpdater::Resource(texture.Pass())
+            , m_updater(updater)
+        {
+        }
+
+        virtual void update(ResourceUpdateQueue&, const gfx::Rect& sourceRect, const gfx::Vector2d& destOffset, bool partialUpdate, RenderingStats&) OVERRIDE;
+
+    private:
+        ImageLayerUpdater* m_updater;
+    };
+
+    static scoped_refptr<ImageLayerUpdater> create();
+
+    virtual scoped_ptr<LayerUpdater::Resource> createResource(
+        PrioritizedTextureManager*) OVERRIDE;
+
+    void updateTexture(ResourceUpdateQueue&, PrioritizedTexture*, const gfx::Rect& sourceRect, const gfx::Vector2d& destOffset, bool partialUpdate);
+
+    void setBitmap(const SkBitmap&);
+
+private:
+    ImageLayerUpdater() { }
+    virtual ~ImageLayerUpdater() { }
+
+    SkBitmap m_bitmap;
+};
+
+}
+
+#endif