Factor SVG root inline box paint code into SVGRootInlineBoxPainter

Source/core/paint/SVGRootInlineBoxPainter.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 SVGRootPainter_h
-#define SVGRootPainter_h
+#ifndef SVGRootInlineBoxPainter_h
+#define SVGRootInlineBoxPainter_h
 
 namespace blink {
 
 struct PaintInfo;
 class LayoutPoint;
-class RenderSVGRoot;
+class SVGRootInlineBox;
 
-class SVGRootPainter {
+class SVGRootInlineBoxPainter {
 public:
-    SVGRootPainter(RenderSVGRoot& renderSVGRoot) : m_renderSVGRoot(renderSVGRoot) { }
+    SVGRootInlineBoxPainter(SVGRootInlineBox& svgRootInlineBox) : m_svgRootInlineBox(svgRootInlineBox) { }
 
     void paint(PaintInfo&, const LayoutPoint&);
 
 private:
-    RenderSVGRoot& m_renderSVGRoot;
+    SVGRootInlineBox& m_svgRootInlineBox;
 };
 
 } // namespace blink
 
-#endif // SVGRootPainter_h
+#endif // SVGRootInlineBoxPainter_h