Compile print_preview, part 1: remove all warnings

chrome/browser/resources/print_preview/data/measurement_system.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 cr.define('print_preview', function() {
   'use strict';
 
   /**
    * Measurement system of the print preview. Used to parse and serialize point
    * measurements into the system's local units (e.g. millimeters, inches).
@@ skipping 122 matching lines @@
      */
     convertFromPoints: function(pts) {
       if (this.unitType_ == MeasurementSystem.UnitType.METRIC) {
         return pts / MeasurementSystem.PTS_PER_MM_;
       } else {
         return pts / MeasurementSystem.PTS_PER_INCH_;
       }
     },
 
     /**
-     * @param {number} Value in local units to convert to points.
+     * @param {number} localUnits Value in local units to convert to points.
      * @return {number} Value in points.
      */
     convertToPoints: function(localUnits) {
       if (this.unitType_ == MeasurementSystem.UnitType.METRIC) {
         return localUnits * MeasurementSystem.PTS_PER_MM_;
       } else {
         return localUnits * MeasurementSystem.PTS_PER_INCH_;
       }
     }
   };
 
   // Export
   return {
     MeasurementSystem: MeasurementSystem
   };
 });