Add nacl_loader_manifest to catalog_mus.

chrome/app/mash/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("//build/config/nacl/config.gni")
 import("//chrome/common/features.gni")
 import("//services/catalog/public/tools/catalog.gni")
 import("//services/service_manager/public/service_manifest.gni")
 
 assert(enable_package_mash_services)
@@ skipping 87 matching lines @@
 
 if (is_chromeos) {
   catalog("catalog_mus") {
     catalog_deps = [ "//chrome/app:catalog" ]
     embedded_services = [
       "//services/ui:manifest",
 
       # TODO(sky): verify if we need this.
       "//services/ui/ime/test_ime_driver:manifest",
     ]
+
+    if (enable_nacl) {
+      embedded_services += [ "//components/nacl/loader:nacl_loader_manifest" ]
+    }
   }
 
   catalog_cpp_source("chrome_mus_catalog") {
     catalog = ":catalog_mus"
     generated_function_name = "CreateChromeMusCatalog"
   }
 }