Pepper: Make users of pp:NetworkMonitorPrivate less likely to leak resources.

ppapi/utility/private/network_list_observer_private.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 "ppapi/utility/private/network_list_observer_private.h"
 
 #include "ppapi/cpp/private/network_list_private.h"
 #include "ppapi/cpp/module.h"
 
 namespace pp {
 
 NetworkListObserverPrivate::NetworkListObserverPrivate(
     const InstanceHandle& instance)
     : PP_ALLOW_THIS_IN_INITIALIZER_LIST(
         monitor_(instance,
                  &NetworkListObserverPrivate::NetworkListCallbackHandler,
                  this)) {
 }
 
 NetworkListObserverPrivate::~NetworkListObserverPrivate() {
 }
 
 // static
 void NetworkListObserverPrivate::NetworkListCallbackHandler(
     void* user_data,
     PP_Resource list_resource) {
   NetworkListObserverPrivate* object =
       static_cast<NetworkListObserverPrivate*>(user_data);
-  NetworkListPrivate list(list_resource);
+  NetworkListPrivate list(PASS_REF, list_resource);
   object->OnNetworkListChanged(list);
-  Module::Get()->core()->ReleaseResource(list_resource);
 }
 
 }  // namespace pp