Add GetBoundAddress to PPB_UDPSocket_Private

content/browser/renderer_host/pepper_udp_socket.cc

Index: content/browser/renderer_host/pepper_udp_socket.cc
diff --git a/content/browser/renderer_host/pepper_udp_socket.cc b/content/browser/renderer_host/pepper_udp_socket.cc
index 33f2c7f0c17199eef6e047f4680cc5ea250c975b..ad7b7457ee7c0be0cd27da943b9934fcb4399b86 100644
--- a/content/browser/renderer_host/pepper_udp_socket.cc
+++ b/content/browser/renderer_host/pepper_udp_socket.cc
@@ -27,7 +27,8 @@ PepperUDPSocket::PepperUDPSocket(
     : manager_(manager),
       routing_id_(routing_id),
       plugin_dispatcher_id_(plugin_dispatcher_id),
-      socket_id_(socket_id) {
+      socket_id_(socket_id),
+      bound_port_(0) {
   DCHECK(manager);
 }
 
@@ -40,6 +41,9 @@ PepperUDPSocket::~PepperUDPSocket() {
 void PepperUDPSocket::Bind(const PP_NetAddress_Private& addr) {
   socket_.reset(new net::UDPServerSocket(NULL, net::NetLog::Source()));
 
+  // Reset |bound_port_| to zero.
+  bound_port_ = 0;
+
   net::IPEndPoint address;
   if (!socket_.get() ||
       !NetAddressPrivateImpl::NetAddressToIPEndPoint(addr, &address)) {
@@ -49,6 +53,13 @@ void PepperUDPSocket::Bind(const PP_NetAddress_Private& addr) {
 
   int result = socket_->Listen(address);
 
+  // If we are successful, get the local port that we bound to.
+  if (result == net::OK) {
+      net::IPEndPoint current_address;
+      socket_->GetLocalAddress(&current_address);
+      bound_port_ = current_address.port();
+  }
+
   SendBindACK(result == net::OK);
 }
 
@@ -107,7 +118,7 @@ void PepperUDPSocket::SendSendToACKError() {
 
 void PepperUDPSocket::SendBindACK(bool result) {
   manager_->Send(new PpapiMsg_PPBUDPSocket_BindACK(
-      routing_id_, plugin_dispatcher_id_, socket_id_, result));
+      routing_id_, plugin_dispatcher_id_, socket_id_, result, bound_port_));
 }
 
 void PepperUDPSocket::OnRecvFromCompleted(int result) {