1 files changed, 43 insertions, 1 deletions
diff --git a/cc/bitmap_skpicture_canvas_layer_texture_updater.h b/cc/bitmap_skpicture_canvas_layer_texture_updater.h
index 638cbb2..140f9be 100644
--- a/cc/bitmap_skpicture_canvas_layer_texture_updater.h
+++ b/cc/bitmap_skpicture_canvas_layer_texture_updater.h
@@ -1,3 +1,45 @@
-// Copyright 2012 The Chromium Authors. All rights reserved.
+// Copyright 2011 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 BitmapSkPictureCanvasLayerTextureUpdater_h
+#define BitmapSkPictureCanvasLayerTextureUpdater_h
+
+#if USE(ACCELERATED_COMPOSITING)
+#include "SkBitmap.h"
+#include "SkPictureCanvasLayerTextureUpdater.h"
+
+namespace cc {
+
+// This class records the contentRect into an SkPicture, then software rasterizes
+// the SkPicture into bitmaps for each tile. This implements CCSettings::perTilePainting.
+class BitmapSkPictureCanvasLayerTextureUpdater : public SkPictureCanvasLayerTextureUpdater {
+public:
+    class Texture : public CanvasLayerTextureUpdater::Texture {
+    public:
+        Texture(BitmapSkPictureCanvasLayerTextureUpdater*, scoped_ptr<CCPrioritizedTexture>);
+
+        virtual void prepareRect(const IntRect& sourceRect, CCRenderingStats&) OVERRIDE;
+        virtual void updateRect(CCResourceProvider*, const IntRect& sourceRect, const IntSize& destOffset) OVERRIDE;
+
+    private:
+        BitmapSkPictureCanvasLayerTextureUpdater* textureUpdater() { return m_textureUpdater; }
+
+        SkBitmap m_bitmap;
+        BitmapSkPictureCanvasLayerTextureUpdater* m_textureUpdater;
+    };
+
+    static PassRefPtr<BitmapSkPictureCanvasLayerTextureUpdater> create(PassOwnPtr<LayerPainterChromium>);
+    virtual ~BitmapSkPictureCanvasLayerTextureUpdater();
+
+    virtual PassOwnPtr<LayerTextureUpdater::Texture> createTexture(CCPrioritizedTextureManager*) OVERRIDE;
+    virtual SampledTexelFormat sampledTexelFormat(GC3Denum textureFormat) OVERRIDE;
+    void paintContentsRect(SkCanvas*, const IntRect& sourceRect, CCRenderingStats&);
+
+private:
+    explicit BitmapSkPictureCanvasLayerTextureUpdater(PassOwnPtr<LayerPainterChromium>);
+};
+} // namespace cc
+#endif // USE(ACCELERATED_COMPOSITING)
+#endif // BitmapSkPictureCanvasLayerTextureUpdater_h