Reland: Make ChromeVox Next a setting in options page

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)
@@ skipping 131 matching lines @@
   sources += chromevox_assets_gypi_values.chromevox_assets_chromevox_background_mathmaps_functions
   sources += chromevox_assets_gypi_values.chromevox_assets_chromevox_background_mathmaps_symbols
   sources +=
       chromevox_assets_gypi_values.chromevox_assets_cvox2_background_earcons
   sources += [
     "chromevox/background/background.html",
     "chromevox/background/kbexplorer.html",
     "chromevox/background/options.html",
     "chromevox/injected/api.js",
     "cvox2/background/background.html",
+    "cvox2/background/next_update.html",
     "cvox2/background/panel.css",
     "cvox2/background/panel.html",
   ]
   if (chromevox_compress_js) {
     sources += [ "chromevox/injected/api_util.js" ]
   } else {
     sources += chromevox_modules
     sources += [
       "closure/closure_preinit.js",
       chromevox_vars_gypi_values.chromevox_content_script_loader_file,
@@ skipping 226 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" ]
 }