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

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

+// 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.
+
+#include "platform/graphics/PaintGeneratedImage.h"
+
+#include "platform/geometry/FloatRect.h"
+#include "platform/graphics/GraphicsContext.h"
+#include "third_party/skia/include/core/SkPicture.h"
+
+namespace blink {
+
+void PaintGeneratedImage::draw(SkCanvas* canvas, const SkPaint& paint, const FloatRect& destRect, const FloatRect& srcRect, RespectImageOrientationEnum, ImageClampingMode)
+{
+    SkAutoCanvasRestore ar(canvas, true);
+    canvas->clipRect(destRect);
+    canvas->translate(destRect.x(), destRect.y());
+    if (destRect.size() != srcRect.size())
+        canvas->scale(destRect.width() / srcRect.width(), destRect.height() / srcRect.height());
+    canvas->translate(-srcRect.x(), -srcRect.y());
+    canvas->drawPicture(m_picture.get(), nullptr, &paint);
+}
+
+void PaintGeneratedImage::drawTile(GraphicsContext& context, const FloatRect& srcRect)
+{
+    context.drawPicture(m_picture.get());
+}
+
+} // namespace blink