code: function WebDriverLogger(log_level) {
      var _push;
  
      // default to no-opt
      if (log_level === "OFF" || log_levels.indexOf(log_level) === -1) {
          _push = function(_) {};
      } else {
          _push = function(arg) { this.log.push(arg); };
      }
  
      return {
          log: [],
          push: _push
      };
  }
docs: (Super-simple) Logger
  
  @param context {String} Logger level