Making Mandoline apps notice when all the objects they vended are gone so that it can terminate.

mojo/services/network/tcp_server_socket_impl.cc

 // Copyright 2014 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.
 
 #include "mojo/services/network/tcp_server_socket_impl.h"
 
 #include "mojo/services/network/net_adapters.h"
 #include "mojo/services/network/net_address_type_converters.h"
 #include "mojo/services/network/tcp_connected_socket_impl.h"
 #include "net/base/net_errors.h"
 
 namespace mojo {
 
-TCPServerSocketImpl::TCPServerSocketImpl(scoped_ptr<net::TCPSocket> socket)
-    : socket_(socket.Pass()) {
+TCPServerSocketImpl::TCPServerSocketImpl(
+    scoped_ptr<net::TCPSocket> socket,
+    scoped_ptr<mojo::AppRefCount> app_refcount)
+    : socket_(socket.Pass()), app_refcount_(app_refcount.Pass()) {
 }
 
 TCPServerSocketImpl::~TCPServerSocketImpl() {
 }
 
 void TCPServerSocketImpl::Accept(
     ScopedDataPipeConsumerHandle send_stream,
     ScopedDataPipeProducerHandle receive_stream,
     InterfaceRequest<TCPConnectedSocket> client_socket,
     const AcceptCallback& callback) {
@@ skipping 24 matching lines @@
 
 void TCPServerSocketImpl::OnAcceptCompleted(int result) {
   if (result != net::OK) {
     pending_callback_.Run(MakeNetworkError(result), NetAddressPtr());
     pending_send_stream_.reset();
     pending_receive_stream_.reset();
     pending_client_socket_ = InterfaceRequest<TCPConnectedSocket>();
   } else {
     new TCPConnectedSocketImpl(
         accepted_socket_.Pass(), pending_send_stream_.Pass(),
-        pending_receive_stream_.Pass(), pending_client_socket_.Pass());
+        pending_receive_stream_.Pass(), pending_client_socket_.Pass(),
+        app_refcount_->Clone());
     pending_callback_.Run(MakeNetworkError(net::OK),
                           NetAddress::From(accepted_address_));
   }
 
   pending_callback_ = AcceptCallback();
 }
 
 }  // namespace mojo