Replace remaining shell references with service manager

services/service_manager/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.
 
 import("//services/service_manager/public/service_manifest.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//testing/test.gni")
 
 group("all") {
   testonly = true
@@ skipping 36 matching lines @@
     # ApplicationManager exposes and uses PackageManager types in its header.
     "//services/catalog:lib",
   ]
 
   data_deps = [
     ":manifest",
   ]
 }
 
 service_manifest("manifest") {
-  name = "shell"
+  name = "service_manager"
   source = "manifest.json"
 }