Don't register excessive pending SVG resources

Source/core/layout/svg/SVGResourcesCache.h

 /*
  * 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
  * 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 38 matching lines @@
 
     // Called from all SVG layoutObjects destroy() methods - except for LayoutSVGResourceContainer.
     static void clientDestroyed(LayoutObject*);
 
     // Called from all SVG layoutObjects layout() methods.
     static void clientLayoutChanged(LayoutObject*);
 
     // Called from all SVG layoutObjects styleDidChange() methods.
     static void clientStyleChanged(LayoutObject*, StyleDifference, const ComputedStyle& newStyle);
 
-    // Called from LayoutSVGResourceContainer::willBeDestroyed().
-    static void resourceDestroyed(LayoutSVGResourceContainer*);
-
 private:
     void addResourcesFromLayoutObject(LayoutObject*, const ComputedStyle&);
     void removeResourcesFromLayoutObject(LayoutObject*);
 
     typedef HashMap<const LayoutObject*, OwnPtr<SVGResources>> CacheMap;
     CacheMap m_cache;
 };
 
 }
 
 #endif