Move the concept of multiple route into Network

webrtc/base/network.cc

 /*
  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 145 matching lines @@
   ost << name << "%" << prefix.ToString() << "/" << prefix_length;
   return ost.str();
 }
 
 NetworkManager::NetworkManager() {
 }
 
 NetworkManager::~NetworkManager() {
 }
 
+NetworkManager::EnumerationPermission NetworkManager::enumeration_permission()
+    const {
+  return kEnumerationAllowed;
+}
+
 NetworkManagerBase::NetworkManagerBase()
     : enumeration_permission_(NetworkManager::kEnumerationAllowed),
       max_ipv6_networks_(kMaxIPv6Networks),
       ipv6_enabled_(true) {
 }
 
 NetworkManagerBase::~NetworkManagerBase() {
   for (const auto& kv : networks_map_) {
     delete kv.second;
   }
@@ skipping 631 matching lines @@
   std::stringstream ss;
   // Print out the first space-terminated token of the network desc, plus
   // the IP address.
   ss << "Net[" << description_.substr(0, description_.find(' '))
      << ":" << prefix_.ToSensitiveString() << "/" << prefix_length_
      << ":" << AdapterTypeToString(type_) << "]";
   return ss.str();
 }
 
 }  // namespace rtc