Refactor Instant web UI (chrome://settings page).

chrome/browser/resources/options/browser_options.js

Index: chrome/browser/resources/options/browser_options.js
diff --git a/chrome/browser/resources/options/browser_options.js b/chrome/browser/resources/options/browser_options.js
index 9a043143cc7d1fcc8cd3d17c6ddec8272421ef3a..ffd838e4a2c7fa0d24f777617a75f8a37c5b43be 100644
--- a/chrome/browser/resources/options/browser_options.js
+++ b/chrome/browser/resources/options/browser_options.js
@@ -71,13 +71,16 @@ cr.define('options', function() {
       $('defaultSearchEngine').onchange = this.setDefaultSearchEngine_;
 
       var self = this;
-      $('instantEnableCheckbox').onclick = function(event) {
-        if (this.checked && !self.instantConfirmDialogShown_) {
-          // Leave disabled for now. The PrefCheckbox handler already set it to
-          // true so undo that.
-          Preferences.setBooleanPref(this.pref, false, this.metric);
-          OptionsPage.navigateToPage('instantConfirm');
+      $('instantEnabledCheckbox').customChangeHandler = function(event) {
+        if (this.checked) {
+          if (self.instantConfirmDialogShown_)
+            chrome.send('enableInstant');
+          else
+            OptionsPage.navigateToPage('instantConfirm');
+        } else {
+          chrome.send('disableInstant');
         }
+        return true;
       };
 
       Preferences.getInstance().addEventListener('instant.confirm_dialog_shown',