Revert of Build services as standalone executables

services/tracing/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/cpp/service.gni")
 import("//services/service_manager/public/service_manifest.gni")
 
 service("tracing") {
   sources = [
     "main.cc",
   ]
 
+  avoid_runner_cycle = true
+
   deps = [
     ":lib",
     "//mojo/public/cpp/system",
     "//services/service_manager/public/cpp",
   ]
 
   data_deps = [
     ":manifest",
   ]
 }
@@ skipping 13 matching lines @@
     "service.h",
   ]
 
   deps = [
     "//base",
     "//mojo/common:common_base",
     "//services/service_manager/public/cpp",
     "//services/tracing/public/interfaces",
   ]
 }