Support script response files in GN.

chrome/installer/mini_installer/BUILD.gn

 # Copyright 2015 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")
 import("//build/config/ui.gni")
 import("//build_overrides/v8.gni")
 import("//chrome/version.gni")
 import("//third_party/icu/config.gni")
 
@@ skipping 108 matching lines @@
     args += [ "--enable_hidpi=1" ]
   }
   if (is_component_build) {
     args += [ "--component_build=1" ]
   } else {
     outputs += [ "$root_out_dir/chrome.packed.7z" ]
   }
 
   if (enable_nacl) {
     inputs += [ "$root_out_dir/nacl_irt_x86_64.nexe" ]
-    if (cpu_arch == "x86") {
+    if (current_cpu == "x86") {
       inputs += [
         "$root_out_dir/nacl64.exe",
         "$root_out_dir/nacl_irt_x86_32.nexe",
       ]
     }
   }
 
   if (icu_use_data_file) {
     inputs += [ "$root_out_dir/icudtl.dat" ]
   } else {
@@ skipping 53 matching lines @@
   libs = [ "setupapi.lib" ]
 
   deps = [
     ":archive",
     ":lib",
     ":version",
     "//build/config/sanitizers:deps",
     "//build/win:default_exe_manifest",
   ]
 }