static parseTime_(string) {
    const LrcTextParser = shaka.text.LrcTextParser;
    const match = LrcTextParser.timeFormat_.exec(string);
    const minutes = parseInt(match[1], 10);
    const seconds = parseFloat(match[2].replace(',', '.'));
    return minutes * 60 + seconds;
  }
Parses a LRC time from the given parser.

@param {string} string
@return {number}
@private