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

Source/WebCore/rendering/mathml/RenderMathMLFenced.cpp

 /*
  * 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 133 matching lines @@
             RenderMathMLRow::addChild(separatorRenderer, beforeChild);
     } else {
         // Adding |y| at the end of an existing element e.g. (x) - insert the separator first before the closing fence, then |y|, to get (x, y).
         if (separatorRenderer)
             RenderMathMLRow::addChild(separatorRenderer, m_closeFenceRenderer);
         RenderMathMLRow::addChild(child, m_closeFenceRenderer);
     }
 }
 
 // FIXME: Change createMathMLOperator() above to create an isAnonymous() operator, and remove this styleDidChange() function.
-void RenderMathMLFenced::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
+void RenderMathMLFenced::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle, const StyleChangeState& state)
 {
-    RenderMathMLBlock::styleDidChange(diff, oldStyle);
+    RenderMathMLBlock::styleDidChange(diff, oldStyle, state);
     
     for (RenderObject* child = firstChild(); child; child = child->nextSibling()) {
         if (child->node() == node()) {
             ASSERT(child->style()->refCount() == 1);
             child->style()->inheritFrom(style());
             bool isFence = child == firstChild() || child == lastChild();
             child->style()->setMarginEnd(Length((isFence ? gFenceMarginEms : gSeparatorMarginEndEms) * style()->fontSize(), Fixed));
             if (isFence)
                 child->style()->setMarginStart(Length(gFenceMarginEms * style()->fontSize(), Fixed));
         }
     }
 }
 
 }    
 
 #endif