remove memoryinstrumentation

Source/core/rendering/RenderTableSection.h

Index: Source/core/rendering/RenderTableSection.h
diff --git a/Source/core/rendering/RenderTableSection.h b/Source/core/rendering/RenderTableSection.h
index e33a5676308b7c18b90857f2afb22f289be58b43..6c1e243e3368245b05377c76919939e3eefc62b9 100644
--- a/Source/core/rendering/RenderTableSection.h
+++ b/Source/core/rendering/RenderTableSection.h
@@ -103,8 +103,6 @@ public:
         }
 
         bool hasCells() const { return cells.size() > 0; }
-
-        void reportMemoryUsage(MemoryObjectInfo*) const;
     };
 
     typedef Vector<CellStruct> Row;
@@ -116,8 +114,6 @@ public:
         {
         }
 
-        void reportMemoryUsage(MemoryObjectInfo*) const;
-
         Row row;
         RenderTableRow* rowRenderer;
         LayoutUnit baseline;
@@ -202,8 +198,6 @@ public:
     
     virtual void paint(PaintInfo&, const LayoutPoint&) OVERRIDE;
 
-    virtual void reportMemoryUsage(MemoryObjectInfo*) const OVERRIDE;
-
 protected:
     virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);