If GetNetworkList fails, don't push down an empty network list.

content/browser/renderer_host/p2p/socket_dispatcher_host.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 "content/browser/renderer_host/p2p/socket_dispatcher_host.h"
 
 #include <stddef.h>
 
 #include "base/bind.h"
 #include "base/stl_util.h"
@@ skipping 316 matching lines @@
   if (it != sockets_.end()) {
     delete it->second;
     sockets_.erase(it);
   } else {
     LOG(ERROR) << "Received P2PHostMsg_DestroySocket for invalid socket_id.";
   }
 }
 
 void P2PSocketDispatcherHost::DoGetNetworkList() {
   net::NetworkInterfaceList list;
-  net::GetNetworkList(&list, net::EXCLUDE_HOST_SCOPE_VIRTUAL_INTERFACES);
+  if (!net::GetNetworkList(&list, net::EXCLUDE_HOST_SCOPE_VIRTUAL_INTERFACES)) {
+    LOG(ERROR) << "GetNetworkList failed.";
+    return;
+  }
   default_ipv4_local_address_ = GetDefaultLocalAddress(AF_INET);
   default_ipv6_local_address_ = GetDefaultLocalAddress(AF_INET6);
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&P2PSocketDispatcherHost::SendNetworkList, this, list,
                  default_ipv4_local_address_, default_ipv6_local_address_));
 }
 
 void P2PSocketDispatcherHost::SendNetworkList(
     const net::NetworkInterfaceList& list,
@@ skipping 53 matching lines @@
 
     if (!dump_incoming_rtp_packet_ && !dump_outgoing_rtp_packet_)
       packet_callback_.Reset();
 
     for (SocketsMap::iterator it = sockets_.begin(); it != sockets_.end(); ++it)
       it->second->StopRtpDump(incoming, outgoing);
   }
 }
 
 }  // namespace content