Add StyleChangeState to get rid of a bunch of static state in the render tree.

Source/WebCore/rendering/mathml/RenderMathMLFenced.h

 /*
  * Copyright (C) 2009 Alex Milowski (alex@milowski.com). All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 28 matching lines @@
     virtual void addChild(RenderObject* child, RenderObject* beforeChild = 0);
     virtual void updateFromElement();
     
 private:
     virtual bool isRenderMathMLFenced() const { return true; }
     virtual const char* renderName() const { return "RenderMathMLFenced"; }
 
     RenderMathMLOperator* createMathMLOperator(UChar, RenderMathMLOperator::OperatorType);
     void makeFences();
     
-    virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) OVERRIDE;
+    virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle, const StyleChangeState&) OVERRIDE;
 
     UChar m_open;
     UChar m_close;
     RefPtr<StringImpl> m_separators;
     
     RenderObject* m_closeFenceRenderer;
 };
     
 }
 
 #endif // ENABLE(MATHML)
 
 #endif // RenderMathMLFenced_h