Use gn_helpers to [se]serialize GN lists.

build/android/gyp/emma_instr.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.
 
 """Instruments classes and jar files.
 
 This script corresponds to the 'emma_instr' action in the java build process.
 Depending on whether emma_instrument is set, the 'emma_instr' action will either
@@ skipping 177 matching lines @@
 
     # Delete output_path first to avoid modifying input_path in the case where
     # input_path is a hardlink to output_path. http://crbug.com/571642
     if os.path.exists(options.output_path):
       os.unlink(options.output_path)
     shutil.move(os.path.join(temp_jar_dir, jars[0]), options.output_path)
   finally:
     shutil.rmtree(temp_dir)
 
   if options.source_dirs:
-    source_dirs = build_utils.ParseGypList(options.source_dirs)
+    source_dirs = build_utils.ParseGnList(options.source_dirs)
   else:
     source_files = []
     if options.source_files:
-      source_files += build_utils.ParseGypList(options.source_files)
+      source_files += build_utils.ParseGnList(options.source_files)
     if options.java_sources_file:
       source_files.extend(
           build_utils.ReadSourcesList(options.java_sources_file))
     source_dirs = _GetSourceDirsFromSourceFiles(source_files)
 
   # TODO(GYP): In GN, we are passed the list of sources, detecting source
   # directories, then walking them to re-establish the list of sources.
   # This can obviously be simplified!
   _CreateSourcesListFile(source_dirs, options.sources_list_file,
                          options.src_root)
@@ skipping 19 matching lines @@
 
 
 def main():
   option_parser = command_option_parser.CommandOptionParser(
       commands_dict=VALID_COMMANDS)
   command_option_parser.ParseAndExecute(option_parser)
 
 
 if __name__ == '__main__':
   sys.exit(main())