Fix a TODO in GN file

services/ui/BUILD.gn

 # Copyright 2015 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/ui.gni")
 import("//testing/test.gni")
 import("//services/service_manager/public/cpp/service.gni")
 import("//services/service_manager/public/service_manifest.gni")
 import("//tools/grit/repack.gni")
 
 group("all") {
   testonly = true
   deps = [
     ":ui",
     "//services/ui/ime/test_ime_driver",
     "//services/ui/test_wm",
   ]
 }
 
 service("ui") {
   sources = [
     "main.cc",
   ]
 
   deps = [
     ":lib",
-    "//services/service_manager/public/cpp:sources",
+    "//services/service_manager/public/cpp",
   ]
 
   data_deps = [
     ":resources_100",
     ":resources_200",
     ":resources_strings",
     "//services/ui/ime/test_ime_driver",
   ]
 }
 
@@ skipping 68 matching lines @@
 
 repack("resources_200") {
   sources = [
     "$root_gen_dir/ui/resources/ui_resources_200_percent.pak",
   ]
   output = "$root_out_dir/mus_app_resources_200.pak"
   deps = [
     "//ui/resources",
   ]
 }