mojo: terminate apps if the shell goes away

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.
 
 source_set("network") {
   deps = [
     "//base",
     "//mojo/common",
     "//mojo/environment:chromium",
-    "//mojo/public/cpp/application",
+    "//mojo/public/cpp/application:chromium",
     "//mojo/services/public/interfaces/network",
     "//net",
     "//url",
   ]
 
   sources = [
     "cookie_store_impl.cc",
     "cookie_store_impl.h",
     "network_context.cc",
     "network_context.h",
     "network_service_impl.cc",
     "network_service_impl.h",
     "url_loader_impl.cc",
     "url_loader_impl.h",
   ]
 }