XXX test gn format everything

extensions/utility/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("//build/config/features.gni")
 
 assert(enable_extensions)
 
 # GYP version: extensions/extensions.gyp:extensions_utility
 source_set("utility") {
   sources = [
     "utility_handler.cc",
     "utility_handler.h",
   ]
 
   deps = [
     "//content/public/utility",
     "//extensions/common",
   ]
 
   if (is_win) {
-    cflags = [
-      "/wd4267", # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
-    ]
+    cflags = [ "/wd4267" ]  # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
   }
 }