lib/third_party/tracing/model/model.js
function(event) {
      for (var i = 0; i < this.userFriendlyCategoryDrivers_.length; i++) {
        var ufc = this.userFriendlyCategoryDrivers_[i].fromEvent(event);
        if (ufc !== undefined)
          return ufc;
      }
      return undefined;
    }
function(event) {
      for (var i = 0; i < this.userFriendlyCategoryDrivers_.length; i++) {
        var ufc = this.userFriendlyCategoryDrivers_[i].fromEvent(event);
        if (ufc !== undefined)
          return ufc;
      }
      return undefined;
    }
function ( event ) { for ( var i = 0 ; i < this . userFriendlyCategoryDrivers_ . length ; i ++ ) { var ufc = this . userFriendlyCategoryDrivers_ [ i ] . fromEvent ( event ) ; if ( ufc !== undefined ) return ufc ; } return undefined ; }
Gets the user friendly category string from an event.

Returns undefined if none is known.
Gets the user friendly category string from an event .