Update existing uses of /wd4267 to use the GN config

components/autofill/content/renderer/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("renderer") {
   sources = [
     "autofill_agent.cc",
     "autofill_agent.h",
     "form_autofill_util.cc",
     "form_autofill_util.h",
@@ skipping 20 matching lines @@
     "//content/public/common",
     "//content/public/renderer",
     "//google_apis",
     "//ipc",
     "//net",
     "//skia",
     "//third_party/WebKit/public:blink",
     "//ui/base",
   ]
 
-  if (is_win) {
-    # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
-    cflags = [ "/wd4267" ]
-  }
+  # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
+  configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 }