Update existing uses of /wd4267 to use the GN config

chrome/installer/util/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("util") {
   deps = [
     "//base",
     "//chrome:resources",
     "//chrome:strings",
   ]
@@ skipping 48 matching lines @@
       "//components/metrics",
       "//courgette:courgette_lib",
       "//crypto",
       "//third_party/bspatch",
       "//third_party/icu",
       "//third_party/lzma_sdk",
     ]
     include_dirs = [ "$root_gen_dir/installer_util_strings" ]
 
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
-    cflags = [ "/wd4267" ]
+    configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 
     # TODO(GYP) hook up corresponding version of installer_util_nacl_win64 in GN
     sources += [
       "advanced_firewall_manager_win.cc",
       "advanced_firewall_manager_win.h",
       "app_command.cc",
       "app_command.h",
       "app_commands.cc",
       "app_commands.h",
       "app_registration_data.h",
@@ skipping 110 matching lines @@
 
   args = [
     "-i",
     rebase_path(grdfile, root_build_dir) + ":resources",
     "-n",
     "installer_util_strings",
     "-o",
     rebase_path(outdir, root_build_dir),
   ]
 }