bool OmniboxEditModel::IsPasteAndSearch(const base::string16& text) const {
  AutocompleteMatch match;
  ClassifyStringForPasteAndGo(text, &match, NULL);
  return AutocompleteMatch::IsSearchType(match.type);
}

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.