This is the first pass at making GetIPConfigs asynchronous.

chromeos/dbus/shill_profile_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_profile_client.h"
 
 #include "base/bind.h"
 #include "base/message_loop.h"
 #include "base/stl_util.h"
 #include "base/values.h"
@@ skipping 150 matching lines @@
   virtual void DeleteEntry(const dbus::ObjectPath& profile_path,
                            const std::string& entry_path,
                            const base::Closure& callback,
                            const ErrorCallback& error_callback) OVERRIDE {
     MessageLoop::current()->PostTask(FROM_HERE, callback);
   }
 
  private:
   void PassEmptyDictionaryValue(
       const DictionaryValueCallbackWithoutStatus& callback) const {
-    base::DictionaryValue dictionary;
-    callback.Run(dictionary);
+    scoped_ptr<base::DictionaryValue> empty(new base::DictionaryValue);
+    callback.Run(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<ShillProfileClientStubImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ShillProfileClientStubImpl);
 };
 
 }  // namespace
 
 ShillProfileClient::ShillProfileClient() {}
 
 ShillProfileClient::~ShillProfileClient() {}
 
 // static
 ShillProfileClient* ShillProfileClient::Create(
     DBusClientImplementationType type,
     dbus::Bus* bus) {
   if (type == REAL_DBUS_CLIENT_IMPLEMENTATION)
     return new ShillProfileClientImpl(bus);
   DCHECK_EQ(STUB_DBUS_CLIENT_IMPLEMENTATION, type);
   return new ShillProfileClientStubImpl();
 }
 
 }  // namespace chromeos