aResult.AssignWithConversion(mText.Get1b(), mText.GetLength());
aResult.Assign(NS_ConvertASCIItoUCS2(mText.Get1b(), mText.GetLength()), mText.GetLength());
nsAttributeContent::CopyText(nsString& aResult){  ValidateTextFragment();  if (mText.Is2b()) {    aResult.Assign(mText.Get2b(), mText.GetLength());  }  else {    aResult.AssignWithConversion(mText.Get1b(), mText.GetLength());  }  return NS_OK;}