base::string16 OmniboxEditModel::DisplayTextFromUserText(
    const base::string16& text) const {
  return KeywordIsSelected() ?
      KeywordProvider::SplitReplacementStringFromInput(text, false) : text;
}

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.