Change var blah_blah -> blahBlah.

chrome/browser/resources/print_preview/data/ticket_items/page_range.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.ticket_items', function() {
   'use strict';
 
   /**
    * Page range ticket item whose value is a {@code string} that represents
    * which pages in the document should be printed.
@@ skipping 53 matching lines @@
     /** @override */
     getCapabilityNotAvailableValueInternal: function() {
       return '';
     },
 
     /**
      * @return {!Array.<object.<{from: number, to: number}>>} A list of page
      *     ranges.
      */
     getPageRanges: function() {
-      var page_ranges = pageRangeTextToPageRanges(this.getValue());
-      return page_ranges ? page_ranges : [];
+      return pageRangeTextToPageRanges(this.getValue()) || [];
     },
 
     /**
      * @return {!Array.<object.<{from: number, to: number}>>} A list of page
      *     ranges suitable for use in the native layer.
      * TODO(vitalybuka): this should be removed when native layer switched to
      *     page ranges.
      */
     getDocumentPageRanges: function() {
-      var page_ranges = pageRangeTextToPageRanges(this.getValue(),
-                                                  this.documentInfo_.pageCount);
-      return page_ranges ? page_ranges : [];
+      var pageRanges = pageRangeTextToPageRanges(this.getValue(),
+                                                 this.documentInfo_.pageCount);
+      return pageRanges || [];
     },
   };
 
   // Export
   return {
     PageRange: PageRange
   };
 });