Fix gn build when nacl is disabled

chrome/browser/resources/chromeos/chromevox/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("//testing/test.gni")
 import("//chrome/test/base/js2gtest.gni")
 import("chromevox.gni")
 
 assert(is_chromeos)
 
 declare_args() {
   # Whether to compress the main Chromevox javascript files or load the
   # modules individually from source files.
   chromevox_compress_js = !is_debug
 }
 
 chromevox_out_dir = "$root_out_dir/resources/chromeos/chromevox"
 
 group("chromevox") {
   deps = [
     ":chromevox_copied_files",
     ":chromevox_guest_manifest",
     ":chromevox_manifest",
     "//chrome/browser/resources/chromeos/braille_ime:braille_ime_manifest",
     "//chrome/browser/resources/chromeos/chromevox/strings:chromevox_strings",
     "//chrome/third_party/chromevox:chromevox_third_party_resources",
-    "//third_party/liblouis",
   ]
+  if (enable_nacl) {
+    deps += [ "//third_party/liblouis" ]
+  }
   if (chromevox_compress_js) {
     deps += [
       ":chromevox_background_script",
       ":chromevox_content_script",
       ":chromevox_kbexplorer_script",
       ":chromevox_options_script",
       ":chromevox_panel_script",
     ]
   } else {
     deps += [ ":chromevox_deps_js" ]
@@ skipping 350 matching lines @@
   defines = [ "HAS_OUT_OF_PROC_TEST_RUNNER" ]
 }
 
 js2gtest("chromevox_extjs_tests") {
   test_type = "extension"
   sources = chromevox_tests_gypi_values.chromevox_tests_extjs_sources
   gen_include_files =
       chromevox_tests_gypi_values.chromevox_tests_ext_gen_include_sources
   defines = [ "HAS_OUT_OF_PROC_TEST_RUNNER" ]
 }