Use gn_helpers to [se]serialize GN lists.

build/android/gyp/pack_relocations.py

 #!/usr/bin/env python
 #
 # 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.
 
 """Pack relocations in a library (or copy unchanged).
 
 If --enable-packing and --configuration-name=='Release', invoke the
 relocation_packer tool to pack the .rel.dyn or .rela.dyn section in the given
 library files.  This step is inserted after the libraries are stripped.
 
 If --enable-packing is zero, the script copies files verbatim, with no
 attempt to pack relocations.
-
-Any library listed in --exclude-packing-list is also copied verbatim,
-irrespective of any --enable-packing setting.  Typically this would be
-'libchromium_android_linker.so'.
 """
 
+import ast
 import optparse
 import os
 import shutil
 import sys
 import tempfile
 
 from util import build_utils
 
 def PackLibraryRelocations(android_pack_relocations, library_path, output_path):
   shutil.copy(library_path, output_path)
@@ skipping 14 matching lines @@
                     'before copying files to it. This is highly recommended to '
                     'ensure that no stale files are left in the directory.')
 
   parser.add_option('--configuration-name',
       default='Release',
       help='Gyp configuration name (i.e. Debug, Release)')
   parser.add_option('--enable-packing',
       choices=['0', '1'],
       help=('Pack relocations if 1 and configuration name is \'Release\','
             ' otherwise plain file copy'))
-  parser.add_option('--exclude-packing-list',
-      default='',
-      help='Names of any libraries explicitly not packed')
   parser.add_option('--android-pack-relocations',
       help='Path to the relocations packer binary')
   parser.add_option('--stripped-libraries-dir',
       help='Directory for stripped libraries')
   parser.add_option('--packed-libraries-dir',
       help='Directory for packed libraries')
   parser.add_option('--libraries', action='append',
-      help='List of libraries')
+      help='List of libraries in Python dictionary format')
   parser.add_option('--stamp', help='Path to touch on success')
   parser.add_option('--filelistjson',
                     help='Output path of filelist.json to write')
 
   options, _ = parser.parse_args(args)
   enable_packing = (options.enable_packing == '1' and
                     options.configuration_name == 'Release')
-  exclude_packing_set = set(build_utils.ParseGypList(
-      options.exclude_packing_list))
 
   libraries = []
   for libs_arg in options.libraries:
-    libraries += build_utils.ParseGypList(libs_arg)
+    libraries += ast.literal_eval(libs_arg)
 
   if options.clear_dir:
     build_utils.DeleteDirectory(options.packed_libraries_dir)
 
   build_utils.MakeDirectory(options.packed_libraries_dir)
 
   output_paths = []
   for library in libraries:
     library_path = os.path.join(options.stripped_libraries_dir, library)
     output_path = os.path.join(
         options.packed_libraries_dir, os.path.basename(library))
     output_paths.append(output_path)
 
-    if enable_packing and library not in exclude_packing_set:
+    if enable_packing:
       PackLibraryRelocations(options.android_pack_relocations,
                              library_path,
                              output_path)
     else:
       CopyLibraryUnchanged(library_path, output_path)
 
   if options.filelistjson:
     build_utils.WriteJson({ 'files': output_paths }, options.filelistjson)
 
   if options.depfile:
     build_utils.WriteDepfile(
         options.depfile,
         libraries + build_utils.GetPythonDependencies())
 
   if options.stamp:
     build_utils.Touch(options.stamp)
 
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))