Make RenderSVGResource::requestPaintingResource an implementation detail

Source/core/rendering/svg/SVGResourcesCycleSolver.cpp

 /*
  * 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 147 matching lines @@
             m_resources->resetStroke();
         break;
     case FilterResourceType:
         ASSERT(resourceLeadingToCycle == m_resources->filter());
         m_resources->resetFilter();
         break;
     case ClipperResourceType:
         ASSERT(resourceLeadingToCycle == m_resources->clipper());
         m_resources->resetClipper();
         break;
-    case SolidColorResourceType:
+    default:
         ASSERT_NOT_REACHED();
         break;
     }
 }
 
 }