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diff --git a/cc/resources/skpicture_content_layer_updater.h b/cc/resources/skpicture_content_layer_updater.h
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+// 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 CC_RESOURCES_SKPICTURE_CONTENT_LAYER_UPDATER_H_
+#define CC_RESOURCES_SKPICTURE_CONTENT_LAYER_UPDATER_H_
+
+#include "cc/resources/content_layer_updater.h"
+#include "third_party/skia/include/core/SkPicture.h"
+
+class SkCanvas;
+
+namespace cc {
+
+class LayerPainter;
+
+// This class records the content_rect into an SkPicture. Subclasses, provide
+// different implementations of tile updating based on this recorded picture.
+// The BitmapSkPictureContentLayerUpdater and
+// FrameBufferSkPictureContentLayerUpdater are two examples of such
+// implementations.
+class SkPictureContentLayerUpdater : public ContentLayerUpdater {
+ public:
+ class Resource : public LayerUpdater::Resource {
+ public:
+ Resource(SkPictureContentLayerUpdater* updater,
+ scoped_ptr<PrioritizedResource> texture);
+ virtual ~Resource();
+
+ virtual void Update(ResourceUpdateQueue* queue,
+ gfx::Rect source_rect,
+ gfx::Vector2d dest_offset,
+ bool partial_update,
+ RenderingStats* stats) OVERRIDE;
+
+ private:
+ SkPictureContentLayerUpdater* updater_;
+
+ DISALLOW_COPY_AND_ASSIGN(Resource);
+ };
+
+ static scoped_refptr<SkPictureContentLayerUpdater> Create(
+ scoped_ptr<LayerPainter> painter);
+
+ virtual scoped_ptr<LayerUpdater::Resource> CreateResource(
+ PrioritizedResourceManager* manager) OVERRIDE;
+ virtual void SetOpaque(bool opaque) OVERRIDE;
+
+ protected:
+ explicit SkPictureContentLayerUpdater(scoped_ptr<LayerPainter> painter);
+ virtual ~SkPictureContentLayerUpdater();
+
+ virtual void PrepareToUpdate(gfx::Rect content_rect,
+ gfx::Size tile_size,
+ float contents_width_scale,
+ float contents_height_scale,
+ gfx::Rect* resulting_opaque_rect,
+ RenderingStats* stats) OVERRIDE;
+ void DrawPicture(SkCanvas* canvas);
+ void UpdateTexture(ResourceUpdateQueue* queue,
+ PrioritizedResource* texture,
+ gfx::Rect source_rect,
+ gfx::Vector2d dest_offset,
+ bool partial_update);
+
+ bool layer_is_opaque() const { return layer_is_opaque_; }
+
+ private:
+ // Recording canvas.
+ SkPicture picture_;
+ // True when it is known that all output pixels will be opaque.
+ bool layer_is_opaque_;
+
+ DISALLOW_COPY_AND_ASSIGN(SkPictureContentLayerUpdater);
+};
+
+} // namespace cc
+
+#endif // CC_RESOURCES_SKPICTURE_CONTENT_LAYER_UPDATER_H_