Files required by a service now listed in manifest.

services/catalog/public/cpp/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.
 
 source_set("cpp") {
   sources = [
+    "manifest_parsing_util.cc",
+    "manifest_parsing_util.h",
     "resource_loader.cc",
     "resource_loader.h",
   ]
 
   deps = [
     "//base",
     "//components/filesystem/public/interfaces",
     "//mojo/public/cpp/bindings",
     "//mojo/public/cpp/system",
+    "//services/catalog:constants",
     "//services/service_manager/public/cpp",
   ]
 }