Support multiple STUN servers for PeerConnection.

content/renderer/p2p/port_allocator.h

 // 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.
 
 #ifndef CONTENT_RENDERER_P2P_PORT_ALLOCATOR_H_
 #define CONTENT_RENDERER_P2P_PORT_ALLOCATOR_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "net/base/net_util.h"
@@ skipping 25 matching lines @@
       ~RelayServerConfig();
 
       std::string username;
       std::string password;
       std::string server_address;
       int port;
       std::string transport_type;
       bool secure;
     };
 
-    // STUN server address and port.
-    std::string stun_server;
-    int stun_server_port;
+    std::set<rtc::SocketAddress> stun_servers;
 
     std::vector<RelayServerConfig> relays;
 
     bool legacy_relay;
     // Disable TCP-based transport when set to true.
     bool disable_tcp_transport;
   };
 
   P2PPortAllocator(blink::WebFrame* web_frame,
                    P2PSocketDispatcher* socket_dispatcher,
@@ skipping 61 matching lines @@
   int relay_tcp_port_;
   int relay_ssltcp_port_;
   int pending_relay_requests_;
 
   DISALLOW_COPY_AND_ASSIGN(P2PPortAllocatorSession);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_P2P_PORT_ALLOCATOR_H_