Method RemoveObserver

src/butil/observer_list.h:129–139

Remove an observer from the list if it is in the list.

  // Remove an observer from the list if it is in the list.
  void RemoveObserver(ObserverType* obs) {
    typename ListType::iterator it =
      std::find(observers_.begin(), observers_.end(), obs);
    if (it != observers_.end()) {
      if (notify_depth_) {
        *it = 0;
      } else {
        observers_.erase(it);
      }
    }
  }

  bool HasObserver(ObserverType* observer) const {
    for (size_t i = 0; i < observers_.size(); ++i) {