mandoline: write this after lunch.

components/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.
 
 import("//mojo/public/mojo_application.gni")
 
 source_set("lib") {
   sources = [
     "clipboard_application_delegate.cc",
     "clipboard_application_delegate.h",
     "clipboard_standalone_impl.cc",
     "clipboard_standalone_impl.h",
   ]
 
   deps = [
     "//base",
     "//components/clipboard/public/interfaces",
     "//mojo/application/public/cpp",
     "//mojo/public/cpp/bindings",
     "//mojo/public/cpp/bindings:callback",
+    "//mojo/services/tracing/public/cpp",
   ]
 }
 
 mojo_native_application("clipboard") {
   sources = [
     "main.cc",
   ]
 
   deps = [
     ":lib",
@@ skipping 17 matching lines @@
     "//components/clipboard/public/interfaces",
     "//mojo/application/public/cpp",
     "//mojo/application/public/cpp:test_support",
     "//mojo/common",
   ]
 
   data_deps = [
     ":clipboard",
   ]
 }