Add Sky framework support for drawing images

sky/engine/core/painting/CanvasImage.h

+// Copyright 2013 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 SKY_ENGINE_CORE_PAINTING_CANVASIMAGE_H_
+#define SKY_ENGINE_CORE_PAINTING_CANVASIMAGE_H_
+
+#include "sky/engine/core/loader/NewImageLoader.h"
+#include "sky/engine/platform/weborigin/KURL.h"
+#include "sky/engine/tonic/dart_wrappable.h"
+#include "sky/engine/wtf/PassRefPtr.h"
+#include "sky/engine/wtf/text/AtomicString.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+
+namespace blink {
+
+class CanvasImage final : public RefCounted<CanvasImage>,
+                          public DartWrappable,
+                          public NewImageLoaderClient {
+  DEFINE_WRAPPERTYPEINFO();
+ public:
+  ~CanvasImage() override;
+  static PassRefPtr<CanvasImage> create() { return adoptRef(new CanvasImage); }
+
+  int width() const;
+  int height() const;
+
+  KURL src() const { return srcURL_; }
+  void setSrc(const String&);
+
+  const SkBitmap& bitmap() const { return bitmap_; }
+  void setBitmap(const SkBitmap& bitmap) { bitmap_ = bitmap; }
+
+ private:
+  CanvasImage();
+
+  // NewImageLoaderClient
+  void OnLoadFinished(const SkBitmap& result) override;
+
+  KURL srcURL_;
+  SkBitmap bitmap_;
+  OwnPtr<NewImageLoader> imageLoader_;
+};
+
+}  // namespace blink
+
+#endif  // SKY_ENGINE_CORE_PAINTING_CANVASIMAGE_H_