This is the first pass at making GetIPConfigs asynchronous.

chromeos/dbus/shill_network_client.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 "chromeos/dbus/shill_network_client.h"
 
 #include "base/bind.h"
 #include "base/message_loop.h"
 #include "base/stl_util.h"
 #include "base/values.h"
@@ skipping 97 matching lines @@
                    callback));
   }
 
   virtual base::DictionaryValue* CallGetPropertiesAndBlock(
       const dbus::ObjectPath& network_path) OVERRIDE {
     return new base::DictionaryValue;
   }
 
  private:
   void PassEmptyDictionaryValue(const DictionaryValueCallback& callback) const {
-    base::DictionaryValue dictionary;
-    callback.Run(DBUS_METHOD_CALL_SUCCESS, dictionary);
+    scoped_ptr<base::DictionaryValue> empty(new base::DictionaryValue);
+    callback.Run(DBUS_METHOD_CALL_SUCCESS, empty.Pass());
   }
 
   // Note: This should remain the last member so it'll be destroyed and
   // invalidate its weak pointers before any other members are destroyed.
   base::WeakPtrFactory<ShillNetworkClientStubImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ShillNetworkClientStubImpl);
 };
 
 }  // namespace
 
 ShillNetworkClient::ShillNetworkClient() {}
 
 ShillNetworkClient::~ShillNetworkClient() {}
 
 // static
 ShillNetworkClient* ShillNetworkClient::Create(
     DBusClientImplementationType type,
     dbus::Bus* bus) {
   if (type == REAL_DBUS_CLIENT_IMPLEMENTATION)
     return new ShillNetworkClientImpl(bus);
   DCHECK_EQ(STUB_DBUS_CLIENT_IMPLEMENTATION, type);
   return new ShillNetworkClientStubImpl();
 }
 
 }  // namespace chromeos