Provide "hostname:port" to the P2P Browser process sockets via P2PHostMsg_CreateSocket.

content/renderer/p2p/ipc_socket_factory.cc

Index: content/renderer/p2p/ipc_socket_factory.cc
diff --git a/content/renderer/p2p/ipc_socket_factory.cc b/content/renderer/p2p/ipc_socket_factory.cc
index 8922fa493c6aafbf3373d7b35d71fb655116f686..f9dfbe0c32682b93c3f527ea3aa8946a3eccae53 100644
--- a/content/renderer/p2p/ipc_socket_factory.cc
+++ b/content/renderer/p2p/ipc_socket_factory.cc
@@ -244,7 +244,9 @@ bool IpcPacketSocket::Init(P2PSocketType type,
   // We need to send both resolved and unresolved address in Init. Unresolved
   // address will be used in case of TLS for certificate hostname matching.
   // Certificate will be tied to domain name not to IP address.
-  P2PHostAndIPEndPoint remote_info(remote_address.hostname(), remote_endpoint);
+  std::string remote_hostname = remote_address.hostname() + ":" +
+      remote_address.PortAsString();
+  P2PHostAndIPEndPoint remote_info(remote_hostname, remote_endpoint);
 
   client->Init(type, local_endpoint, remote_info, this);