nscoord&           aItalicCorrection)
nscoord&           aLeftItalicCorrection, nscoord&           aRightItalicCorrection)
  GetItalicCorrection(nsBoundingMetrics& aBoundingMetrics,                      nscoord&           aItalicCorrection)  {    aItalicCorrection = aBoundingMetrics.rightBearing - aBoundingMetrics.width;    if (0 > aItalicCorrection) {      aItalicCorrection = 0;    }  }