Do FilteringNetworkManager::CheckPermission from new Initialize method.

content/renderer/p2p/port_allocator.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/port_allocator.h"
 
 #include <stdint.h>
 
 #include <memory>
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "content/public/common/content_switches.h"
 #include "content/renderer/p2p/socket_dispatcher.h"
 
 namespace content {
 
 P2PPortAllocator::P2PPortAllocator(
     const scoped_refptr<P2PSocketDispatcher>& socket_dispatcher,
     std::unique_ptr<rtc::NetworkManager> network_manager,
     rtc::PacketSocketFactory* socket_factory,
     const Config& config,
     const GURL& origin)
     : cricket::BasicPortAllocator(network_manager.get(), socket_factory),
       network_manager_(std::move(network_manager)),
       socket_dispatcher_(socket_dispatcher),
       config_(config),
       origin_(origin) {
+  DCHECK(socket_dispatcher);
+  DCHECK(network_manager_);
+  DCHECK(socket_factory);
   uint32_t flags = 0;
   if (!config_.enable_multiple_routes) {
     flags |= cricket::PORTALLOCATOR_DISABLE_ADAPTER_ENUMERATION;
   }
   if (!config_.enable_default_local_candidate) {
     flags |= cricket::PORTALLOCATOR_DISABLE_DEFAULT_LOCAL_CANDIDATE;
   }
   if (!config_.enable_nonproxied_udp) {
     flags |= cricket::PORTALLOCATOR_DISABLE_UDP |
              cricket::PORTALLOCATOR_DISABLE_STUN |
              cricket::PORTALLOCATOR_DISABLE_UDP_RELAY;
   }
   set_flags(flags);
   set_allow_tcp_listen(false);
   const base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess();
   bool enable_webrtc_stun_origin =
       cmd_line->HasSwitch(switches::kEnableWebRtcStunOrigin);
   if (enable_webrtc_stun_origin) {
     set_origin(origin_.spec());
   }
 }
 
 P2PPortAllocator::~P2PPortAllocator() {}
 
+void P2PPortAllocator::Initialize() {
+  BasicPortAllocator::Initialize();
+  network_manager_->Initialize();
+}
+
 }  // namespace content