Add UMA stats for user settings

chrome/browser/resources/options/browser_options.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() {
   var OptionsPage = options.OptionsPage;
   var ArrayDataModel = cr.ui.ArrayDataModel;
   var RepeatingButton = cr.ui.RepeatingButton;
   var HotwordSearchSettingIndicator = options.HotwordSearchSettingIndicator;
 
@@ skipping 68 matching lines @@
 
       // Ensure that navigation events are unblocked on uber page. A reload of
       // the settings page while an overlay is open would otherwise leave uber
       // page in a blocked state, where tab switching is not possible.
       uber.invokeMethodOnParent('stopInterceptingEvents');
 
       window.addEventListener('message', this.handleWindowMessage_.bind(this));
 
       if (loadTimeData.getBoolean('allowAdvancedSettings')) {
         $('advanced-settings-expander').onclick = function() {
+          var showAdvanced =
+              BrowserOptions.shouldShowSection_($('advanced-settings'));
+          if (showAdvanced) {
+            chrome.send('coreOptionsUserMetricsAction',
+                        ['Options_ShowAdvancedSettings']);
+          }
           self.toggleSectionWithAnimation_(
               $('advanced-settings'),
               $('advanced-settings-container'));
 
           // If the link was focused (i.e., it was activated using the keyboard)
           // and it was used to show the section (rather than hiding it), focus
           // the first element in the container.
           if (document.activeElement === $('advanced-settings-expander') &&
-                  $('advanced-settings').style.height === '') {
+              showAdvanced) {
             var focusElement = $('advanced-settings-container').querySelector(
                 'button, input, list, select, a[href]');
             if (focusElement)
               focusElement.focus();
           }
         };
       } else {
         $('advanced-settings-expander').hidden = true;
         $('advanced-settings').hidden = true;
       }
@@ skipping 1744 matching lines @@
     BrowserOptions.getLoggedInUsername = function() {
       return BrowserOptions.getInstance().username_;
     };
   }
 
   // Export
   return {
     BrowserOptions: BrowserOptions
   };
 });