nsSharedBufferHandle( CharT* aDataStart, CharT* aDataEnd )
nsSharedBufferHandle( CharT* aDataStart, CharT* aDataEnd, CharT*, CharT*, PRBool isSingleAllocation )
      nsSharedBufferHandle( CharT* aDataStart, CharT* aDataEnd )          : nsBufferHandle<CharT>(aDataStart, aDataEnd)        {          mFlags = kIsShared;        }