This is the first pass at making GetIPConfigs asynchronous.

chrome/browser/chromeos/cros/sms_watcher.cc

 // 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.
 
 #include "chrome/browser/chromeos/cros/sms_watcher.h"
 
 #include <algorithm>
 #include <deque>
 #include <string>
 #include <vector>
@@ skipping 357 matching lines @@
       dbus::ObjectPath(modem_device_path),
       base::Bind(&SMSWatcher::DevicePropertiesCallback,
                  weak_ptr_factory_.GetWeakPtr()));
 }
 
 SMSWatcher::~SMSWatcher() {
 }
 
 void SMSWatcher::DevicePropertiesCallback(
     DBusMethodCallStatus call_status,
-    const base::DictionaryValue& properties) {
+    scoped_ptr<base::DictionaryValue> properties) {
   if (call_status != DBUS_METHOD_CALL_SUCCESS)
     return;
 
   std::string dbus_connection;
-  if (!properties.GetStringWithoutPathExpansion(
+  if (!properties->GetStringWithoutPathExpansion(
           flimflam::kDBusConnectionProperty, &dbus_connection)) {
     LOG(WARNING) << "Modem device properties do not include DBus connection.";
     return;
   }
 
   std::string object_path_string;
-  if (!properties.GetStringWithoutPathExpansion(
+  if (!properties->GetStringWithoutPathExpansion(
           flimflam::kDBusObjectProperty, &object_path_string)) {
     LOG(WARNING) << "Modem device properties do not include DBus object.";
     return;
   }
 
   if (object_path_string.compare(
           0, sizeof(modemmanager::kModemManager1ServicePath) - 1,
           modemmanager::kModemManager1ServicePath) == 0) {
     watcher_.reset(
         new ModemManager1Watcher(device_path_, callback_, dbus_connection,
                                  dbus::ObjectPath(object_path_string)));
   } else {
     watcher_.reset(
         new GsmWatcher(device_path_, callback_, dbus_connection,
                        dbus::ObjectPath(object_path_string)));
   }
 }
 
 }  // namespace chromeos