Implement interfaces in PaintInfo and make it a class.

Source/core/rendering/svg/SVGRenderSupport.h

 /**
  * Copyright (C) 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Google, Inc.  All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 41 matching lines @@
     // Calculates the repaintRect in combination with filter, clipper and masker in local coordinates.
     static void intersectRepaintRectWithResources(const RenderObject*, FloatRect&);
 
     // Determines whether a container needs to be laid out because it's filtered and a child is being laid out.
     static bool filtersForceContainerLayout(RenderObject*);
 
     // Determines whether the passed point lies in a clipping area
     static bool pointInClippingArea(RenderObject*, const FloatPoint&);
 
     static void computeContainerBoundingBoxes(const RenderObject* container, FloatRect& objectBoundingBox, bool& objectBoundingBoxValid, FloatRect& strokeBoundingBox, FloatRect& repaintBoundingBox);
-    static bool paintInfoIntersectsRepaintRect(const FloatRect& localRepaintRect, const AffineTransform& localTransform, const PaintInfo&);
+    static bool paintInfoIntersectsRepaintRect(const FloatRect& localRepaintRect, const AffineTransform& localTransform, PaintInfo&);
 
     // Important functions used by nearly all SVG renderers centralizing coordinate transformations / repaint rect calculations
     static LayoutRect clippedOverflowRectForRepaint(const RenderObject*, const RenderLayerModelObject* repaintContainer);
     static void computeFloatRectForRepaint(const RenderObject*, const RenderLayerModelObject* repaintContainer, FloatRect&, bool fixed);
     static void mapLocalToContainer(const RenderObject*, const RenderLayerModelObject* repaintContainer, TransformState&, bool* wasFixed = 0);
     static const RenderObject* pushMappingToContainer(const RenderObject*, const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap&);
     static bool checkForSVGRepaintDuringLayout(RenderObject*);
 
     // Shared between SVG renderers and resources.
     static void applyStrokeStyleToContext(GraphicsContext*, const RenderStyle*, const RenderObject*);
     static void applyStrokeStyleToStrokeData(StrokeData*, const RenderStyle*, const RenderObject*);
 
     // Determines if any ancestor's transform has changed.
     static bool transformToRootChanged(RenderObject*);
 
     // FIXME: These methods do not belong here.
     static const RenderSVGRoot* findTreeRootObject(const RenderObject*);
 
 private:
     // This class is not constructable.
     SVGRenderSupport();
     ~SVGRenderSupport();
 };
 
 } // namespace WebCore
 
 #endif // SVGRenderSupport_h