Disable mouse-focus of buttons in some WebUI pages

chrome/browser/resources/options/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.
 
 var AddLanguageOverlay = options.AddLanguageOverlay;
 var AlertOverlay = options.AlertOverlay;
 var AutofillEditAddressOverlay = options.AutofillEditAddressOverlay;
 var AutofillEditCreditCardOverlay = options.AutofillEditCreditCardOverlay;
 var AutofillOptions = options.AutofillOptions;
 var BrowserOptions = options.BrowserOptions;
@@ skipping 210 matching lines @@
                                 CertificateManager.getInstance());
     OptionsPage.registerOverlay(CertificateImportErrorOverlay.getInstance(),
                                 CertificateManager.getInstance());
     OptionsPage.registerOverlay(CertificateManager.getInstance(),
                                 BrowserOptions.getInstance(),
                                 [$('certificatesManageButton')]);
     OptionsPage.registerOverlay(CertificateRestoreOverlay.getInstance(),
                                 CertificateManager.getInstance());
   }
 
+  cr.ui.FocusManager.disableMouseFocusOnButtons();
   OptionsFocusManager.getInstance().initialize();
   Preferences.getInstance().initialize();
   OptionsPage.initialize();
 
   var path = document.location.pathname;
 
   if (path.length > 1) {
     // Skip starting slash and remove trailing slash (if any).
     var pageName = path.slice(1).replace(/\/$/, '');
     OptionsPage.showPageByName(pageName, true, {replaceState: true});
@@ skipping 26 matching lines @@
   options.OptionsPage.willClose();
 };
 
 /**
  * Listener for the |popstate| event.
  * @param {Event} e The |popstate| event.
  */
 window.onpopstate = function(e) {
   options.OptionsPage.setState(e.state);
 };