Use gn_helpers to [se]serialize GN lists.

build/android/gyp/locale_pak_resources.py

 #!/usr/bin/env python
 #
 # Copyright 2015 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.
 """Creates a resources.zip for locale .pak files.
 
 Places the locale.pak files into appropriate resource configs
 (e.g. en-GB.pak -> res/raw-en/en_gb.lpak). Also generates a locale_paks
 TypedArray so that resource files can be enumerated at runtime.
@@ skipping 75 matching lines @@
   parser.add_option('--resources-zip', help='Path to output resources.zip')
   parser.add_option('--print-languages',
       action='store_true',
       help='Print out the list of languages that cover the given locale paks '
            '(using Android\'s language codes)')
 
   options, _ = parser.parse_args()
   build_utils.CheckOptions(options, parser,
                            required=['locale_paks'])
 
-  sources = build_utils.ParseGypList(options.locale_paks)
+  sources = build_utils.ParseGnList(options.locale_paks)
 
   if options.depfile:
     deps = sources + build_utils.GetPythonDependencies()
     build_utils.WriteDepfile(options.depfile, deps)
 
   mappings, lang_to_locale_map = ComputeMappings(sources)
   if options.print_languages:
     print '\n'.join(sorted(lang_to_locale_map))
 
   if options.resources_zip:
@@ skipping 10 matching lines @@
         xml = CreateLocalePaksXml(names + ['en_us.lpak'])
         out.writestr(os.path.join(dest_dir, 'locale-paks.xml'), xml)
 
       for lang, names in lang_to_locale_map.iteritems():
         WriteValuesFile(lang, names)
       WriteValuesFile(None, [])
 
 
 if __name__ == '__main__':
   sys.exit(main())