Missing *explicit* keyword in constructors

Source/core/rendering/svg/RenderSVGResourceMasker.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 17 matching lines @@
 #include "core/svg/SVGMaskElement.h"
 #include "core/svg/SVGUnitTypes.h"
 
 #include "wtf/HashMap.h"
 #include "wtf/OwnPtr.h"
 
 namespace WebCore {
 
 class RenderSVGResourceMasker FINAL : public RenderSVGResourceContainer {
 public:
-    RenderSVGResourceMasker(SVGMaskElement*);
+    explicit RenderSVGResourceMasker(SVGMaskElement*);
     virtual ~RenderSVGResourceMasker();
 
     virtual const char* renderName() const { return "RenderSVGResourceMasker"; }
 
     virtual void removeAllClientsFromCache(bool markForInvalidation = true);
     virtual void removeClientFromCache(RenderObject*, bool markForInvalidation = true);
     virtual bool applyResource(RenderObject*, RenderStyle*, GraphicsContext*&, unsigned short resourceMode) OVERRIDE;
     virtual void postApplyResource(RenderObject*, GraphicsContext*&, unsigned short, const Path*, const RenderSVGShape*) OVERRIDE;
     virtual FloatRect resourceBoundingBox(RenderObject*);
 
@@ skipping 12 matching lines @@
 
 inline RenderSVGResourceMasker* toRenderSVGResourceMasker(RenderSVGResource* resource)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(!resource || resource->resourceType() == MaskerResourceType);
     return static_cast<RenderSVGResourceMasker*>(resource);
 }
 
 }
 
 #endif