Fix wrong usage of MethodCall resposne.

chromeos/dbus/ibus/ibus_engine_factory_service_unittest.cc

Index: chromeos/dbus/ibus/ibus_engine_factory_service_unittest.cc
diff --git a/chromeos/dbus/ibus/ibus_engine_factory_service_unittest.cc b/chromeos/dbus/ibus/ibus_engine_factory_service_unittest.cc
index adbe958ef2d08850c4a403633ebb31703d3ad3e7..b7b68a0c464868b75ff0998d9001c1b4e3f89430 100644
--- a/chromeos/dbus/ibus/ibus_engine_factory_service_unittest.cc
+++ b/chromeos/dbus/ibus/ibus_engine_factory_service_unittest.cc
@@ -32,6 +32,7 @@ class MockCreateEngineResponseSender {
 
   // Checks the given |response| meets expectation for the CreateEngine method.
   void CheckCreateEngineResponse(dbus::Response* response) {
+    scoped_ptr<dbus::Response> response_deleter(response);
     dbus::MessageReader reader(response);
     dbus::ObjectPath actual_path;
     ASSERT_TRUE(reader.PopObjectPath(&actual_path));
@@ -129,6 +130,7 @@ TEST_F(IBusEngineFactoryServiceTest, CreateEngineTest) {
   dbus::MethodCall method_call(
       ibus::engine_factory::kServiceInterface,
       ibus::engine_factory::kCreateEngineMethod);
+  method_call.SetSerial(10);
   dbus::MessageWriter writer(&method_call);
   writer.AppendString(kSampleEngine);
   ASSERT_FALSE(