XXX test gn format everything

components/visitedlink/common/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.
 
 static_library("common") {
   output_name = "visitedlink_common"
   sources = [
     "visitedlink_common.cc",
     "visitedlink_common.h",
     "visitedlink_message_generator.cc",
     "visitedlink_message_generator.h",
     "visitedlink_messages.h",
   ]
 
   deps = [
     "//base",
     "//content/public/common",
     "//ipc",
-    "//url"
+    "//url",
   ]
 }