This is the first pass at making GetIPConfigs asynchronous.

chrome/browser/chromeos/cros/sms_watcher.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_SMS_WATCHER_H_
 #define CHROME_BROWSER_CHROMEOS_CROS_SMS_WATCHER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 34 matching lines @@
   // derived classes in the anonymous namespace to inherit from it.
   class WatcherBase;
 
   SMSWatcher(const std::string& modem_device_path,
              MonitorSMSCallback callback);
   virtual ~SMSWatcher();
 
  private:
   // Callback for shill device's GetProperties() method.
   void DevicePropertiesCallback(DBusMethodCallStatus call_status,
-                                const base::DictionaryValue& properties);
+                                scoped_ptr<base::DictionaryValue> properties);
 
   base::WeakPtrFactory<SMSWatcher> weak_ptr_factory_;
   std::string device_path_;
   MonitorSMSCallback callback_;
   scoped_ptr<WatcherBase> watcher_;
 
   DISALLOW_COPY_AND_ASSIGN(SMSWatcher);
 };
 
 }  // namespace
 
 #endif  // CHROME_BROWSER_CHROMEOS_CROS_SMS_WATCHER_H_