chromeos networking: small cleanups

chromeos/network/network_configuration_handler.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROMEOS_NETWORK_NETWORK_CONFIGURATION_HANDLER_H_
 #define CHROMEOS_NETWORK_NETWORK_CONFIGURATION_HANDLER_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 35 matching lines @@
 //
 // |source| is provided to several of these methods so that it can be passed
 // along to any observers. See notes in network_configuration_observer.h.
 //
 // Note on callbacks: Because all the functions here are meant to be
 // asynchronous, they all take a |callback| of some type, and an
 // |error_callback|. When the operation succeeds, |callback| will be called, and
 // when it doesn't, |error_callback| will be called with information about the
 // error, including a symbolic name for the error and often some error message
 // that is suitable for logging. None of the error message text is meant for
-// user consumption.
+// user consumption.  Both |callback| and |error_callback| are permitted to be
+// null callbacks.
 class CHROMEOS_EXPORT NetworkConfigurationHandler
     : public base::SupportsWeakPtr<NetworkConfigurationHandler> {
  public:
   ~NetworkConfigurationHandler();
 
   // Manages the observer list.
   void AddObserver(NetworkConfigurationObserver* observer);
   void RemoveObserver(NetworkConfigurationObserver* observer);
 
   // Gets the properties of the network with id |service_path|. See note on
@@ skipping 128 matching lines @@
   std::map<std::string, ProfileEntryDeleter*> profile_entry_deleters_;
 
   ObserverList<NetworkConfigurationObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkConfigurationHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_NETWORK_NETWORK_CONFIGURATION_HANDLER_H_