Use gn_helpers to deserialize GN lists.

components/policy/BUILD.gn

 # Copyright 2014 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/features.gni")
 import("//components/policy/resources/policy_templates.gni")
 import("//third_party/protobuf/proto_library.gni")
 import("//tools/grit/grit_rule.gni")
 
@@ skipping 267 matching lines @@
       "//components/policy/proto",
       "//crypto",
       "//net",
       "//testing/gmock",
       "//testing/gtest",
     ]
   }
 
   if (is_android) {
     import("//build/config/android/rules.gni")
+    import("//build/config/zip.gni")
 
     resources_name = "app_restrictions_resources"
     resources_zip = "res.java/$resources_name.zip"
     generated_resources_dir = "$root_gen_dir/chrome/app/policy/android"
 
     consolidate_target_name = "${resources_name}__consolidate_resources"
     copy(consolidate_target_name) {
       sources = [
         app_restrictions_path,
       ]
@@ skipping 11 matching lines @@
     # use. The public rules (in rules.gni) should be updated to support what
     # we are doing here.
     build_config_target_name = "${resources_name}__build_config"
     write_build_config(build_config_target_name) {
       build_config = "$target_gen_dir/$resources_name.build_config"
       resources_zip = "$root_build_dir/$resources_zip"
       type = "android_resources"
     }
 
     zip_target_name = "${resources_name}__create_zip"
-    action(zip_target_name) {
-      script = "//build/android/gn/zip.py"
-      outputs = [
-        "$root_build_dir/$resources_zip",
-      ]
-      generated_resources = get_target_outputs(":$consolidate_target_name") +
-                            policy_templates_android_outputs
-      inputs = generated_resources
-      rebased_inputs = rebase_path(generated_resources, root_build_dir)
-      rebased_resources_dir =
-          rebase_path(generated_resources_dir, root_build_dir)
-      args = [
-        "--inputs=$rebased_inputs",
-        "--output=$resources_zip",
-        "--base-dir=$rebased_resources_dir",
-      ]
+    zip(zip_target_name) {
+      inputs = get_target_outputs(":$consolidate_target_name") +
+               policy_templates_android_outputs
+      output = "$root_build_dir/$resources_zip"
+      base_dir = generated_resources_dir
       deps = [
         ":$consolidate_target_name",
         ":policy_templates_grit",  # For policy_templates_android_outputs.
       ]
     }
 
     group("app_restrictions_resources") {
       deps = [
         ":$build_config_target_name",
         ":$zip_target_name",
       ]
     }
   }
 }
 #TODO(GYP) chrome_manifest_bundle