result = GetFrameForNodeOffset(aNode, aContentOffset, mHint, &clickInFrame, &OffsetNotUsed);
nsresult result = GetFrameForNodeOffset(aNode, aContentOffset, mHint, &clickInFrame, &OffsetNotUsed);
void nsSelection::BidiLevelFromClick(nsIContent *aNode, PRUint32 aContentOffset){  nsCOMPtr<nsPresContext> context;  nsresult result = mTracker->GetPresContext(getter_AddRefs(context));  if (NS_FAILED(result) || !context)    return;  nsIPresShell *shell = context->GetPresShell();  if (!shell)    return;  nsIFrame* clickInFrame=nsnull;  PRInt32 OffsetNotUsed;  result = GetFrameForNodeOffset(aNode, aContentOffset, mHint, &clickInFrame, &OffsetNotUsed);  if (NS_FAILED(result))    return;  shell->SetCaretBidiLevel(NS_GET_EMBEDDING_LEVEL(clickInFrame));}