Move Monochrome locale .pak files upstream

chrome/android/monochrome_repack_locales.gni

 # 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("//android_webview/webview_repack_locales_list.gni")
 import("//chrome/chrome_repack_locales.gni")
 
+#TODO(agrieve): Delete once unreferenced downstream.
 template("monochrome_repack_locales") {
   chrome_repack_locales(target_name) {
     forward_variables_from(invoker, "*")
     additional_source_patterns = webview_repack_locales_source_patterns
     deps = webview_repack_locales_deps
   }
 }