remove memoryinstrumentation

Source/core/css/MediaQueryExp.h

 /*
  * CSS Media Query
  *
  * Copyright (C) 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  *
  * 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
@@ skipping 54 matching lines @@
                                             || m_mediaFeature == MediaFeatureNames::max_heightMediaFeature
                                             || m_mediaFeature == MediaFeatureNames::orientationMediaFeature
                                             || m_mediaFeature == MediaFeatureNames::aspect_ratioMediaFeature
                                             || m_mediaFeature == MediaFeatureNames::min_aspect_ratioMediaFeature
                                             || m_mediaFeature == MediaFeatureNames::max_aspect_ratioMediaFeature;  }
 
     String serialize() const;
 
     PassOwnPtr<MediaQueryExp> copy() const { return adoptPtr(new MediaQueryExp(*this)); }
 
-    void reportMemoryUsage(MemoryObjectInfo*) const;
-
 private:
     MediaQueryExp(const AtomicString& mediaFeature, CSSParserValueList* values);
 
     AtomicString m_mediaFeature;
     RefPtr<CSSValue> m_value;
     bool m_isValid;
     String m_serializationCache;
 };
 
 } // namespace
 
 #endif