remove memoryinstrumentation

Source/core/dom/NodeRareData.h

Index: Source/core/dom/NodeRareData.h
diff --git a/Source/core/dom/NodeRareData.h b/Source/core/dom/NodeRareData.h
index 3868b5ae58456bdb67e425704e61e8735355ade5..70c6dfe90b43faa60b4a39cb7bc252f51d41fb27 100644
--- a/Source/core/dom/NodeRareData.h
+++ b/Source/core/dom/NodeRareData.h
@@ -209,8 +209,6 @@ public:
         }
     }
 
-    void reportMemoryUsage(MemoryObjectInfo*) const;
-
 private:
     NodeListsNodeData()
         : m_childNodeList(0)
@@ -282,9 +280,6 @@ public:
         m_connectedFrameCount -= amount;
     }
 
-    // This member function is intentionally not virtual to avoid adding a vtable pointer.
-    void reportMemoryUsage(MemoryObjectInfo*) const;
-
 protected:
     NodeRareData(RenderObject* renderer)
         : NodeRareDataBase(renderer)