This is the first pass at making GetIPConfigs asynchronous.

chrome/browser/chromeos/cros/mock_network_library.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 CHROME_BROWSER_CHROMEOS_CROS_MOCK_NETWORK_LIBRARY_H_
 #define CHROME_BROWSER_CHROMEOS_CROS_MOCK_NETWORK_LIBRARY_H_
 
 #include <string>
 
 #include "chrome/browser/chromeos/cros/network_library.h"
@@ skipping 163 matching lines @@
   MOCK_CONST_METHOD0(connecting_network, const Network*(void));
 
   MOCK_CONST_METHOD0(offline_mode, bool(void));
 
   MOCK_METHOD1(EnableEthernetNetworkDevice, void(bool));
   MOCK_METHOD1(EnableWifiNetworkDevice, void(bool));
   MOCK_METHOD1(EnableCellularNetworkDevice, void(bool));
   MOCK_METHOD1(EnableWimaxNetworkDevice, void(bool));
   MOCK_METHOD1(EnableMobileNetworkDevice, void(bool));
   MOCK_METHOD1(EnableOfflineMode, void(bool));
-  MOCK_METHOD3(GetIPConfigs, NetworkIPConfigVector(const std::string&,
-                                                   std::string*,
-                                                   HardwareAddressFormat));
+  MOCK_METHOD3(GetIPConfigs, void(const std::string&,
+                                  HardwareAddressFormat,
+                                  const NetworkGetIPConfigsCallback&));
+  MOCK_METHOD3(GetIPConfigsAndBlock,
+               NetworkIPConfigVector(const std::string&,
+                                     std::string*,
+                                     HardwareAddressFormat));
   MOCK_METHOD6(SetIPParameters, void(const std::string&,
                                      const std::string&,
                                      const std::string&,
                                      const std::string&,
                                      const std::string&,
                                      int));
   MOCK_METHOD0(SwitchToPreferredNetwork, void(void));
   MOCK_METHOD5(LoadOncNetworks, bool(const std::string&,
                                      const std::string&,
                                      NetworkUIData::ONCSource,
                                      bool,
                                      std::string*));
   MOCK_METHOD2(SetActiveNetwork, bool(ConnectionType, const std::string&));
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_CROS_MOCK_NETWORK_LIBRARY_H_