Fixed crash related to cellular network payment plan retreival.

BUG=chromium-os:8864
TEST=none

Review URL: http://codereview.chromium.org/4690002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@65405 0039d316-1c4b-4281-b951-d872f2087c98
  void NotifyNetworkChanged(Network* network) {
    DCHECK(network);
    NetworkObserverMap::const_iterator iter = network_observers_.find(
        network->service_path());
    if (iter != network_observers_.end()) {
      FOR_EACH_OBSERVER(NetworkObserver,
                        *(iter->second),
                        OnNetworkChanged(this, network));
    } else {
      NOTREACHED() <<
          "There weren't supposed to be any property change observers of " <<
           network->service_path();
    }
  }

  void NotifyNetworkChanged(Network* network) {
    DCHECK(network);
    NetworkObserverMap::const_iterator iter = network_observers_.find(
        network->service_path());
    if (iter != network_observers_.end()) {
      FOR_EACH_OBSERVER(NetworkObserver,
                        *(iter->second),
                        OnNetworkChanged(this, network));
    } else {
      NOTREACHED() <<
          "There weren't supposed to be any property change observers of " <<
           network->service_path();
    }
  }
