Make supportsMarkers non virtual

Source/core/rendering/svg/SVGResources.h

Index: Source/core/rendering/svg/SVGResources.h
diff --git a/Source/core/rendering/svg/SVGResources.h b/Source/core/rendering/svg/SVGResources.h
index 5f3a8d473e6d3d60d8eb8d2e79c2d7d7205221bd..03f9c3399f1d59a478da7487807c5a67c68310c7 100644
--- a/Source/core/rendering/svg/SVGResources.h
+++ b/Source/core/rendering/svg/SVGResources.h
@@ -35,6 +35,7 @@ class RenderSVGResourceContainer;
 class RenderSVGResourceFilter;
 class RenderSVGResourceMarker;
 class RenderSVGResourceMasker;
+class SVGElement;
 class SVGRenderStyle;
 
 // Holds a set of resources associated with a RenderObject
@@ -46,6 +47,8 @@ public:
     static PassOwnPtr<SVGResources> buildResources(const RenderObject*, const SVGRenderStyle*);
     void layoutIfNeeded();
 
+    static bool supportsMarkers(const SVGElement&);
+
     // Ordinary resources
     RenderSVGResourceClipper* clipper() const { return m_clipperFilterMaskerData ? m_clipperFilterMaskerData->clipper : 0; }
     RenderSVGResourceMarker* markerStart() const { return m_markerData ? m_markerData->markerStart : 0; }