Make select-to-speak work with Google Docs.

chrome/browser/resources/chromeos/select_to_speak/BUILD.gn

 # Copyright 2016 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("//chrome/browser/resources/chromeos/chromevox/run_jsbundler.gni")
 
 assert(is_chromeos)
@@ skipping 12 matching lines @@
 # Instead of setting up one copy target for each subdirectory, use a script
 # to copy all files.
 run_jsbundler("select_to_speak_copied_files") {
   mode = "copy"
   dest_dir = select_to_speak_out_dir
   sources = [
     "checked.png",
     "options.css",
     "options.html",
     "select_to_speak.js",
+    "select_to_speak_gdocs_script.js",
     "select_to_speak_main.js",
     "select_to_speak_options.js",
     "unchecked.png",
   ]
   rewrite_rules = [
     rebase_path(".", root_build_dir) + ":",
     rebase_path(closure_library_dir, root_build_dir) + ":closure",
   ]
 }
 
@@ skipping 30 matching lines @@
 }
 
 manifest("select_to_speak_manifest") {
   output_file = "$select_to_speak_out_dir/manifest.json"
 }
 
 manifest("select_to_speak_guest_manifest") {
   output_file = "$select_to_speak_out_dir/manifest_guest.json"
   is_guest_manifest = true
 }