Make mojo/services pass in "gn check"

mojo/services/clipboard/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.
 
 # GYP version: mojo/mojo_services.gypi:mojo_clipboard
 component("clipboard") {
   deps = [
     "//base",
+    "//mojo/application",
     "//mojo/common",
     "//mojo/environment:chromium",
     "//mojo/public/c/system:for_component",
+    "//mojo/public/cpp/bindings",
     "//mojo/services/public/interfaces/clipboard",
     "//ui/base",
   ]
 
   sources = [
     "clipboard_standalone_impl.cc",
     "clipboard_standalone_impl.h",
     "main.cc",
   ]
 }
@@ skipping 11 matching lines @@
     "//mojo/services/public/interfaces/clipboard:clipboard",
     "//mojo/shell:test_support",
     "//mojo/system",
     "//testing/gtest",
   ]
 
   sources = [
     "clipboard_standalone_unittest.cc",
   ]
 }