remove memoryinstrumentation

Source/core/css/CSSAspectRatioValue.h

 /*
  * Copyright (C) 2011 Google Inc. 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
@@ skipping 30 matching lines @@
         return adoptRef(new CSSAspectRatioValue(numeratorValue, denominatorValue));
     }
 
     String customCssText() const;
 
     float numeratorValue() const { return m_numeratorValue; }
     float denominatorValue() const { return m_denominatorValue; }
 
     bool equals(const CSSAspectRatioValue&) const;
 
-    void reportDescendantMemoryUsage(MemoryObjectInfo*) const;
-
 private:
     CSSAspectRatioValue(float numeratorValue, float denominatorValue)
         : CSSValue(AspectRatioClass)
         , m_numeratorValue(numeratorValue)
         , m_denominatorValue(denominatorValue)
     {
     }
 
     float m_numeratorValue;
     float m_denominatorValue;
 };
 
 }
 
 #endif