Use gn_helpers to [se]serialize GN lists.

build/android/gyp/proguard.py

 #!/usr/bin/env python
 #
 # Copyright 2013 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 optparse
 import os
 import sys
 
@@ skipping 31 matching lines @@
   parser.add_option('--stamp', help='Path to touch on success.')
   parser.add_option('--enable-dangerous-optimizations', action='store_true',
                     help='Enable optimizations which are known to have issues.')
   parser.add_option('--verbose', '-v', action='store_true',
                     help='Print all proguard output')
 
   options, _ = parser.parse_args(args)
 
   classpath = []
   for arg in options.classpath:
-    classpath += build_utils.ParseGypList(arg)
+    classpath += build_utils.ParseGnList(arg)
   options.classpath = classpath
 
   return options
 
 
 def main(args):
   args = build_utils.ExpandFileArgs(args)
   options = _ParseOptions(args)
 
   proguard = proguard_util.ProguardCmdBuilder(options.proguard_path)
-  proguard.injars(build_utils.ParseGypList(options.input_paths))
-  proguard.configs(build_utils.ParseGypList(options.proguard_configs))
+  proguard.injars(build_utils.ParseGnList(options.input_paths))
+  proguard.configs(build_utils.ParseGnList(options.proguard_configs))
   proguard.outjar(options.output_path)
 
   if options.mapping:
     proguard.mapping(options.mapping)
 
   if options.tested_apk_info:
     proguard.tested_apk_info(options.tested_apk_info)
 
   classpath = list(set(options.classpath))
   proguard.libraryjars(classpath)
   proguard.verbose(options.verbose)
   if not options.enable_dangerous_optimizations:
     proguard.disable_optimizations(_DANGEROUS_OPTIMIZATIONS)
 
   input_paths = proguard.GetInputs()
 
   build_utils.CallAndWriteDepfileIfStale(
       proguard.CheckOutput,
       options,
       input_paths=input_paths,
       input_strings=proguard.build(),
       output_paths=[options.output_path])
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))