Make sure that scoped_ptr<> cannot be used with ref-counted objects.

ppapi/proxy/ppb_network_monitor_private_proxy.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/proxy/ppb_network_monitor_private_proxy.h"
 
 #include "ppapi/proxy/enter_proxy.h"
 #include "ppapi/proxy/plugin_proxy_delegate.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/thunk/ppb_network_monitor_private_api.h"
@@ skipping 64 matching lines @@
 
   PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
   if (!dispatcher)
     return 0;
   PPB_NetworkMonitor_Private_Proxy* proxy =
       static_cast<PPB_NetworkMonitor_Private_Proxy*>(
           dispatcher->GetInterfaceProxy(kApiID));
   if (!proxy)
     return 0;
 
-  scoped_ptr<NetworkMonitor> result(
+  scoped_refptr<NetworkMonitor> result(
       new NetworkMonitor(instance, proxy, callback, user_data));
   proxy->monitors_->AddObserver(result.get());
 
   proxy->monitors_count_++;
   if (proxy->monitors_count_ == 1) {
     // If that is the first network monitor then send Start message.
     PluginGlobals::Get()->plugin_proxy_delegate()->SendToBrowser(
         new PpapiHostMsg_PPBNetworkMonitor_Start(
             dispatcher->plugin_dispatcher_id()));
 
     // We could have received network list message after sending the
     // previous Stop message. This list is stale now, so reset it
     // here.
     proxy->current_list_ = NULL;
   } else if (proxy->current_list_.get()) {
     MessageLoop::current()->PostTask(FROM_HERE, base::Bind(
         &NetworkMonitor::OnNetworkListReceived,
         result->AsWeakPtr(), proxy->current_list_));
   }
 
-  return result.release()->GetReference();
+  return result->GetReference();
 }
 
 bool PPB_NetworkMonitor_Private_Proxy::OnMessageReceived(
     const IPC::Message& msg) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(PPB_NetworkMonitor_Private_Proxy, msg)
     IPC_MESSAGE_HANDLER(PpapiMsg_PPBNetworkMonitor_NetworkList,
                         OnPluginMsgNetworkList)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
@@ skipping 20 matching lines @@
       PluginGlobals::Get()->plugin_proxy_delegate()->SendToBrowser(
           new PpapiHostMsg_PPBNetworkMonitor_Stop(
               dispatcher->plugin_dispatcher_id()));
     }
     current_list_ = NULL;
   }
 }
 
 }  // namespace proxy
 }  // namespace ppapi