Missing *explicit* keyword in constructors

Source/core/rendering/svg/RenderSVGResourceMarker.h

 /*
  * Copyright (C) Research In Motion Limited 2009-2010. 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 16 matching lines @@
 
 #include "wtf/HashSet.h"
 
 namespace WebCore {
 
 class AffineTransform;
 class RenderObject;
 
 class RenderSVGResourceMarker FINAL : public RenderSVGResourceContainer {
 public:
-    RenderSVGResourceMarker(SVGMarkerElement*);
+    explicit RenderSVGResourceMarker(SVGMarkerElement*);
     virtual ~RenderSVGResourceMarker();
 
     virtual const char* renderName() const { return "RenderSVGResourceMarker"; }
 
     virtual void removeAllClientsFromCache(bool markForInvalidation = true);
     virtual void removeClientFromCache(RenderObject*, bool markForInvalidation = true);
 
     void draw(PaintInfo&, const AffineTransform&);
 
     // Calculates marker boundaries, mapped to the target element's coordinate space
@@ skipping 29 matching lines @@
 
 inline RenderSVGResourceMarker* toRenderSVGResourceMarker(RenderSVGResource* resource)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(!resource || resource->resourceType() == MarkerResourceType);
     return static_cast<RenderSVGResourceMarker*>(resource);
 }
 
 }
 
 #endif