skip |= 1 << NS_SIDE_LEFT;
nsInlineFrame* prev = (nsInlineFrame*) mPrevInFlow; if (prev->mRect.height || prev->mRect.width) {   skip |= 1 << NS_SIDE_LEFT; } else {   }
nsInlineFrame::GetSkipSides() const{  PRIntn skip = 0;  if (nsnull != mPrevInFlow) {    skip |= 1 << NS_SIDE_LEFT;  }  if (nsnull != mNextInFlow) {    skip |= 1 << NS_SIDE_RIGHT;  }  return skip;}