Merge "Allow comments from linker.config.json"

def Proto(args):

  json_content = ''

  with open(args.source) as f:

    obj = json.load(f, object_pairs_hook=collections.OrderedDict)

    for line in f:

      if not line.lstrip().startswith('//'):

        json_content += line

  obj = json.loads(json_content, object_pairs_hook=collections.OrderedDict)

  pb = ParseDict(obj, linker_config_pb2.LinkerConfig())

  with open(args.output, 'wb') as f:

    f.write(pb.SerializeToString())