bool OmniboxEditModel::IsSpaceCharForAcceptingKeyword(wchar_t c) {
  switch (c) {
    case 0x0020:  // Space
    case 0x3000:  // Ideographic Space
      return true;
    default:
      return false;
  }
}

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.