Move paint code from RenderImage/RenderVideo into ImagePainter/VideoPainter.

Source/core/paint/ImagePainter.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 ImagePainter_h
+#define ImagePainter_h
+
+namespace blink {
+
+class GraphicsContext;
+struct PaintInfo;
+class LayoutPoint;
+class LayoutRect;
+class RenderImage;
+
+class ImagePainter {
+public:
+    ImagePainter(RenderImage& renderImage) : m_renderImage(renderImage) { }
+
+    void paint(PaintInfo&, const LayoutPoint&);
+    void paintReplaced(PaintInfo&, const LayoutPoint&);
+    void paintIntoRect(GraphicsContext*, const LayoutRect&);
+
+private:
+    void paintAreaElementFocusRing(PaintInfo&);
+
+    RenderImage& m_renderImage;
+};
+
+} // namespace blink
+
+#endif // ImagePainter_h