Move ViewDisplayList to GraphicsLayer

Source/platform/graphics/paint/DrawingDisplayItem.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 DrawingDisplayItem_h
+#define DrawingDisplayItem_h
+
+#include "platform/PlatformExport.h"
+#include "platform/geometry/FloatPoint.h"
+#include "platform/graphics/paint/DisplayItem.h"
+#include "third_party/skia/include/core/SkPicture.h"
+
+namespace blink {
+
+class PLATFORM_EXPORT DrawingDisplayItem : public DisplayItem {
+public:
+    DrawingDisplayItem(DisplayItemClient client, Type type, PassRefPtr<SkPicture> picture, const FloatPoint& location)
+        : DisplayItem(client, type), m_picture(picture), m_location(location) { }
+
+    PassRefPtr<SkPicture> picture() const { return m_picture; }
+    const FloatPoint& location() const { return m_location; }
+
+private:
+    virtual void replay(GraphicsContext*);
+
+    RefPtr<SkPicture> m_picture;
+    const FloatPoint m_location;
+#ifndef NDEBUG
+    virtual WTF::String asDebugString() const override;
+#endif
+};
+
+} // namespace blink
+
+#endif // DrawingDisplayItem_h