Mojo UDP: add a client-side wrapper which handles the client<->server buffering for users.

mojo/services/network/BUILD.gn

 # 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.
 
 # GYP version: mojo/mojo_services.gypi:mojo_network_service
 shared_library("network") {
   output_name = "mojo_network_service"
 
   deps = [
     ":lib",
@@ skipping 40 matching lines @@
     "tcp_server_socket_impl.h",
     "udp_socket_impl.cc",
     "udp_socket_impl.h",
     "url_loader_impl.cc",
     "url_loader_impl.h",
     "web_socket_impl.cc",
     "web_socket_impl.h",
   ]
 }
 
-# GYP version: mojo/mojo_services.gypi:mojo_network_service_unittests
 test("unittests") {
+  output_name = "mojo_network_service_unittests"
   deps = [
     ":network",
     "//base",
     "//base/test:test_support",
     "//mojo/application_manager",
     "//mojo/edk/system",
     "//mojo/edk/test:run_all_unittests",
     "//mojo/environment:chromium",
+    "//mojo/services/public/cpp/network",
     "//mojo/services/public/interfaces/network",
     "//mojo/shell:test_support",
     "//testing/gtest",
   ]
 
   sources = [
     "udp_socket_unittest.cc",
   ]
 }