Support port range for IPC P2P UDP sockets.

content/browser/renderer_host/p2p/socket_dispatcher_host.cc

Index: content/browser/renderer_host/p2p/socket_dispatcher_host.cc
diff --git a/content/browser/renderer_host/p2p/socket_dispatcher_host.cc b/content/browser/renderer_host/p2p/socket_dispatcher_host.cc
index 1204067792468b72da8aa60e720444f13df1335d..d48b11502833c1193ab99038b29d77309b374629 100644
--- a/content/browser/renderer_host/p2p/socket_dispatcher_host.cc
+++ b/content/browser/renderer_host/p2p/socket_dispatcher_host.cc
@@ -237,9 +237,12 @@ void P2PSocketDispatcherHost::OnGetHostAddress(const std::string& host_name,
 }
 
 void P2PSocketDispatcherHost::OnCreateSocket(
-    P2PSocketType type, int socket_id,
+    P2PSocketType type,
+    int socket_id,
     const net::IPEndPoint& local_address,
+    const P2PPortRange& port_range,
     const P2PHostAndIPEndPoint& remote_address) {
+  DCHECK(local_address.port() == 0 || port_range.min_port == 0);
   if (LookupSocket(socket_id)) {
     LOG(ERROR) << "Received P2PHostMsg_CreateSocket for socket "
         "that already exists.";
@@ -254,7 +257,8 @@ void P2PSocketDispatcherHost::OnCreateSocket(
     return;
   }
 
-  if (socket->Init(local_address, remote_address)) {
+  if (socket->Init(local_address, port_range.min_port, port_range.max_port,
+                   remote_address)) {
     sockets_[socket_id] = socket.release();
 
     if (dump_incoming_rtp_packet_ || dump_outgoing_rtp_packet_) {