Use newImageSnapshot() to get an image from a Canvas

Source/platform/graphics/StaticBitmapImage.h

+// Copyright 2014 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 StaticBitmapImage_h
+#define StaticBitmapImage_h
+
+#include "platform/graphics/Image.h"
+
+namespace blink {
+
+class PLATFORM_EXPORT StaticBitmapImage : public Image {
+public:
+    virtual ~StaticBitmapImage();
+
+    static PassRefPtr<Image> create(PassRefPtr<SkImage>);
+    virtual void destroyDecodedData(bool destroyAll) { }
+    virtual bool currentFrameKnownToBeOpaque();
+    virtual IntSize size() const;
+    virtual void draw(GraphicsContext*, const FloatRect& dstRect, const FloatRect& srcRect, CompositeOperator, blink::WebBlendMode);
+
+
+    PassRefPtr<SkImage> image() OVERRIDE { return m_image; }
+
+protected:
+    StaticBitmapImage(PassRefPtr<SkImage>);
+
+    RefPtr<SkImage> m_image;
+};
+
+} // namespace
+
+#endif