Hook up CSSPaintValue::image to CSS Paint API callback.

third_party/WebKit/Source/platform/graphics/PaintGeneratedImage.h

+// Copyright 2016 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 PaintGeneratedImage_h
+#define PaintGeneratedImage_h
+
+#include "platform/geometry/IntSize.h"
+#include "platform/graphics/GeneratedImage.h"
+#include "wtf/OwnPtr.h"
+
+namespace blink {
+
+class PLATFORM_EXPORT PaintGeneratedImage : public GeneratedImage {

[chrishtr, 2016/04/06 18:55:20]

Add comments explaining what this class is for.

[ikilpatrick, 2016/04/07 23:03:00]

Done. PTAL

+public:
+    static PassRefPtr<PaintGeneratedImage> create(PassRefPtr<SkPicture> picture, const IntSize& size)
+    {
+        return adoptRef(new PaintGeneratedImage(picture, size));
+    }
+    ~PaintGeneratedImage() override { }
+
+protected:
+    void draw(SkCanvas*, const SkPaint&, const FloatRect&, const FloatRect&, RespectImageOrientationEnum, ImageClampingMode) override;
+    void drawTile(GraphicsContext&, const FloatRect&) final;
+
+    PaintGeneratedImage(PassRefPtr<SkPicture> picture, const IntSize& size)
+        : GeneratedImage(size)
+        , m_picture(picture)
+    {
+    }
+
+    RefPtr<SkPicture> m_picture;
+};
+
+} // namespace blink
+
+#endif // PaintGeneratedImage_h