remove memoryinstrumentation

Source/core/css/MediaList.h

Index: Source/core/css/MediaList.h
diff --git a/Source/core/css/MediaList.h b/Source/core/css/MediaList.h
index f2001708f4204e2d39d3ac0b19d6dcc439a8399b..36203402f70ffd09562c82829e9bcb3162d722e8 100644
--- a/Source/core/css/MediaList.h
+++ b/Source/core/css/MediaList.h
@@ -67,8 +67,6 @@ public:
 
     PassRefPtr<MediaQuerySet> copy() const { return adoptRef(new MediaQuerySet(*this)); }
 
-    void reportMemoryUsage(MemoryObjectInfo*) const;
-
 private:
     MediaQuerySet();
     MediaQuerySet(const String& mediaQuery, bool fallbackToDescription);
@@ -109,8 +107,6 @@ public:
 
     void reattach(MediaQuerySet*);
 
-    void reportMemoryUsage(MemoryObjectInfo*) const;
-
 private:
     MediaList();
     MediaList(MediaQuerySet*, CSSStyleSheet* parentSheet);