Add the new content widget including localised title.

ios/chrome/search_widget_extension/BUILD.gn

 # Copyright 2017 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/ios/rules.gni")
 import("//build/config/locales.gni")
 import("//build/config/mac/base_rules.gni")
 import("//build/mac/tweak_info_plist.gni")
 import("//ios/build/chrome_build.gni")
 import("//tools/grit/repack.gni")
 import("//ios/chrome/tools/strings/generate_localizable_strings.gni")
 
 tweak_info_plist("tweak_info_plist") {
   info_plist = "Info.plist"
 }
 
 compile_plist("entitlements") {
   format = "xml1"
   substitutions = [ "IOS_BUNDLE_ID_PREFIX=$ios_app_bundle_id_prefix" ]
   output_name = "$target_gen_dir/search_widget_extension.appex.entitlements"
   plist_templates =
       [ "entitlements/external/search_widget_extension.appex.entitlements" ]
 }
 
 ios_appex_bundle("search_widget_extension") {
   deps = [
+    ":resources",
     ":search_widget",
+    ":system_strings",
   ]
 
   extra_substitutions = [
     "CHROME_CHANNEL_SCHEME=$url_channel_scheme",
     "CHROMIUM_SHORT_NAME=$chromium_short_name",
     "WIDGET_EXTENSION_BUNDLE_ID=$chromium_bundle_id.SearchTodayExtension",
   ]
 
   entitlements_target = ":entitlements"
   info_plist_target = ":tweak_info_plist"
 }
 
 source_set("search_widget") {
   sources = [
     "search_widget_view.h",
     "search_widget_view.mm",
     "search_widget_view_controller.h",
     "search_widget_view_controller.mm",
     "ui_util.h",
     "ui_util.mm",
   ]
 
   deps = [
-    ":resources",
-    ":system_strings",
     "//base",
     "//components/open_from_clipboard:open_from_clipboard_impl",
     "//ios/chrome/common/app_group",
   ]
 
   libs = [
     "Foundation.framework",
     "NotificationCenter.framework",
     "UIKit.framework",
   ]
@@ skipping 62 matching lines @@
   deps = [
     "//ios/chrome/search_widget_extension/strings:ios_search_widget_extension_chromium_strings",
 
     # Depends on both branding strings target to ensure the proper .h exists
     # (the .plist configuration can only reference one of them, and their
     # content is identical).
     "//ios/chrome/search_widget_extension/strings:ios_search_widget_extension_google_chrome_strings",
     _packed_resources_target,
   ]
 }