Upstream target to generate localizable strings for Info.plist.

ios/chrome/app/resources/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/chrome_build.gni")
 import("//build/config/ios/rules.gni")
 import("//build/config/locales.gni")
 import("//ios/chrome/app/resources/ios_chrome_repack.gni")
+import("//ios/chrome/tools/strings/generate_localizable_strings.gni")
 import("//ios/public/provider/chrome/browser/build_config.gni")
 import("//tools/grit/grit_rule.gni")
 
 grit("resources") {
   source = "ios_resources.grd"
   output_dir = "$root_gen_dir/ios/chrome"
   use_qualified_include = true
   outputs = [
     "grit/ios_resources.h",
     "ios_resources.pak",
@@ skipping 87 matching lines @@
     "{{bundle_resources_dir}}/{{source_file_part}}",
   ]
 }
 
 bundle_data_xib("launchscreen_xib") {
   source = "LaunchScreen.xib"
   deps = [
     ios_launchscreen_assets_target,
   ]
 }
+
+generate_localizable_strings("system_strings") {
+  config_file = "chrome_localize_strings_config.plist"
+  datapack_dir = get_label_info(ios_packed_resources_target, "target_gen_dir")
+  packed_locales = ios_packed_locales_as_mac_outputs
+  output_filenames = [
+    "InfoPlist.strings",
+    "Localizable.strings",
+  ]
+  deps = [
+    ios_packed_resources_target,
+  ]
+}