void OmniboxEditModel::InternalSetUserText(const base::string16& text) {
  user_text_ = text;
  just_deleted_text_ = false;
  inline_autocomplete_text_.clear();
  view_->OnInlineAutocompleteTextCleared();
}

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.