Change var blah_blah -> blahBlah.

chrome/browser/resources/extensions/extension_list.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('options', function() {
   'use strict';
 
   /**
    * A lookup helper function to find the first node that has an id (starting
    * at |node| and going up the parent chain).
@@ skipping 36 matching lines @@
     },
 
     /**
      * Creates all extension items from scratch.
      * @private
      */
     showExtensionNodes_: function() {
       // Iterate over the extension data and add each item to the list.
       this.data_.extensions.forEach(this.createNode_, this);
 
-      var id_to_highlight = this.getIdQueryParam_();
-      if (id_to_highlight) {
+      var idToHighlight = this.getIdQueryParam_();
+      if (idToHighlight) {
         // Scroll offset should be calculated slightly higher than the actual
         // offset of the element being scrolled to, so that it ends up not all
         // the way at the top. That way it is clear that there are more elements
         // above the element being scrolled to.
-        var scroll_fudge = 1.2;
-        var offset = $(id_to_highlight).offsetTop -
-                     (scroll_fudge * $(id_to_highlight).clientHeight);
+        var scrollFudge = 1.2;
+        var offset = $(idToHighlight).offsetTop -
+                     (scrollFudge * $(idToHighlight).clientHeight);
         var wrapper = this.parentNode;
         var list = wrapper.parentNode;
         list.scrollTop = offset;
       }
 
       if (this.data_.extensions.length == 0)
         this.classList.add('empty-extension-list');
       else
         this.classList.remove('empty-extension-list');
     },
 
     /**
      * Synthesizes and initializes an HTML element for the extension metadata
      * given in |extension|.
      * @param {Object} extension A dictionary of extension metadata.
      * @private
      */
     createNode_: function(extension) {
       var template = $('template-collection').querySelector(
           '.extension-list-item-wrapper');
       var node = template.cloneNode(true);
       node.id = extension.id;
 
       if (!extension.enabled || extension.terminated)
         node.classList.add('inactive-extension');
 
       if (!extension.userModifiable)
         node.classList.add('may-not-disable');
 
-      var id_to_highlight = this.getIdQueryParam_();
-      if (node.id == id_to_highlight)
+      var idToHighlight = this.getIdQueryParam_();
+      if (node.id == idToHighlight)
         node.classList.add('extension-highlight');
 
       var item = node.querySelector('.extension-list-item');
       item.style.backgroundImage = 'url(' + extension.icon + ')';
 
       var title = node.querySelector('.extension-title');
       title.textContent = extension.name;
 
       var version = node.querySelector('.extension-version');
       version.textContent = extension.version;
@@ skipping 127 matching lines @@
             // but this page will be updated asynchronously if the extension
             // becomes enabled/disabled. It also might not become enabled or
             // disabled, because the user might e.g. get prompted when enabling
             // and choose not to.
             e.preventDefault();
           });
         }
 
         enable.querySelector('input').checked = extension.enabled;
       } else {
-        var terminated_reload = node.querySelector('.terminated-reload-link');
-        terminated_reload.hidden = false;
-        terminated_reload.addEventListener('click', function(e) {
+        var terminatedReload = node.querySelector('.terminated-reload-link');
+        terminatedReload.hidden = false;
+        terminatedReload.addEventListener('click', function(e) {
           chrome.send('extensionSettingsReload', [extension.id]);
         });
       }
 
       // 'Remove' button.
       var trashTemplate = $('template-collection').querySelector('.trash');
       var trash = trashTemplate.cloneNode(true);
       trash.title = loadTimeData.getString('extensionUninstall');
       trash.addEventListener('click', function(e) {
         chrome.send('extensionSettingsUninstall', [extension.id]);
@@ skipping 71 matching lines @@
       }
 
       this.appendChild(node);
     }
   };
 
   return {
     ExtensionsList: ExtensionsList
   };
 });