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

mojo/services/network/network_service_delegate.cc

 // Copyright 2015 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/network_service_delegate.h"
 
 #include "base/at_exit.h"
 #include "base/base_paths.h"
 #include "base/files/file_path.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 22 matching lines @@
   // Destroy the NetworkContext now as it requires MessageLoop::current() upon
   // destruction and it is the last moment we know for sure that it is
   // running.
   context_.reset();
 }
 
 void NetworkServiceDelegate::Create(
     mojo::ApplicationConnection* connection,
     mojo::InterfaceRequest<mojo::NetworkService> request) {
   mojo::BindToRequest(
-      new mojo::NetworkServiceImpl(connection, context_.get()), &request);
+      new mojo::NetworkServiceImpl(
+          connection,
+          context_.get(),
+          app_lifetime_helper_.CreateAppRefCount()),
+      &request);
 }