code: function normalizeAppMediaQueryTokens(tokens) {
      for (let i = tokens.length - 1; i >= 0; i--) {
          let item = tokens[i].trim();
          if (item && item !== '(') {
              break;
          }
  
          tokens.pop();
      }
  }
docs: Normalize the app media query tokens in place.
  
  @inner
  @param {Array.<string>} tokens the tokens to normalize