Change var blah_blah -> blahBlah.

chrome/browser/resources/chromeos/network_configuration/js/main_status.js

 // Copyright (c) 2013 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.
 
 function onPageLoad() {
   var networkStatus = $('network-status');
   network.status.NetworkStatusList.decorate(networkStatus);
 
   networkStatus.setUserActionHandler(function(action) {
     if (action.command == 'openConfiguration') {
-      var config_url =
+      var configUrl =
           chrome.extension.getURL('config.html?network=' + action.networkId);
-      window.open(config_url, 'network-config-frame');
+      window.open(configUrl, 'network-config-frame');
     }
   });
 }
 
 document.addEventListener('DOMContentLoaded', onPageLoad);