Add service_test GN template

services/ui/demo/BUILD.gn

 # Copyright 2016 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.
 
 import("//services/catalog/public/tools/catalog.gni")
 import("//services/service_manager/public/cpp/service.gni")
 import("//services/service_manager/public/service_manifest.gni")
+import("//services/service_manager/public/tools/test/service_test.gni")
 import("//testing/test.gni")
 
 source_set("lib") {
   sources = [
     "mus_demo.cc",
     "mus_demo.h",
   ]
 
   public_deps = [
     "//services/service_manager/public/cpp:sources",
@@ skipping 32 matching lines @@
 service_manifest("manifest") {
   name = "mus_demo"
   source = "manifest.json"
 }
 
 service_manifest("test_manifest") {
   name = "mus_demo_unittests"
   source = "test_manifest.json"
 }
 
-test("mus_demo_unittests") {
+service_test("mus_demo_unittests") {
   testonly = true
 
   sources = [
     "mus_demo_unittests.cc",
-    "run_all_unittests.cc",
   ]
 
+  catalog = ":mus_demo_unittests_catalog"
+
   deps = [
     ":demo",
     "//base",
-    "//base/test:test_support",
-    "//mojo/edk/system",
-    "//services/catalog:lib",
     "//services/service_manager/public/cpp",
     "//services/service_manager/public/cpp:service_test_support",
     "//services/ui/public/interfaces",
     "//testing/gtest",
   ]
 
   data_deps = [
     ":mus_demo",
-    ":mus_demo_unittests_catalog_copy",
   ]
 }
 
 group("demo") {
   deps = [
     ":mus_demo",
   ]
 }
 
 catalog("mus_demo_unittests_catalog") {
   embedded_services = [ ":test_manifest" ]
 
   standalone_services = [
     ":manifest",
     "//services/ui:manifest",
   ]
 }
-
-copy("mus_demo_unittests_catalog_copy") {
-  sources = get_target_outputs(":mus_demo_unittests_catalog")
-  outputs = [
-    "${root_out_dir}/mus_demo_unittests_catalog.json",
-  ]
-  deps = [
-    ":mus_demo_unittests_catalog",
-  ]
-}