Fix more cases of unreachable code on Windows

content/renderer/p2p/ipc_network_manager.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/renderer/p2p/ipc_network_manager.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/sys_byteorder.h"
 #include "content/public/common/content_switches.h"
@@ skipping 12 matching lines @@
         return talk_base::ADAPTER_TYPE_ETHERNET;
     case net::NetworkChangeNotifier::CONNECTION_WIFI:
         return talk_base::ADAPTER_TYPE_WIFI;
     case net::NetworkChangeNotifier::CONNECTION_2G:
     case net::NetworkChangeNotifier::CONNECTION_3G:
     case net::NetworkChangeNotifier::CONNECTION_4G:
         return talk_base::ADAPTER_TYPE_CELLULAR;
     default:
         return talk_base::ADAPTER_TYPE_UNKNOWN;
   }
-  return talk_base::ADAPTER_TYPE_UNKNOWN;
 }
 
 }  // namespace
 
 IpcNetworkManager::IpcNetworkManager(P2PSocketDispatcher* socket_dispatcher)
     : socket_dispatcher_(socket_dispatcher),
       start_count_(0),
       network_list_received_(false),
       weak_factory_(this) {
   socket_dispatcher_->AddNetworkListObserver(this);
@@ skipping 78 matching lines @@
   MergeNetworkList(networks, &changed);
   if (changed)
     SignalNetworksChanged();
 }
 
 void IpcNetworkManager::SendNetworksChangedSignal() {
   SignalNetworksChanged();
 }
 
 }  // namespace content