MD Settings: Restore focus after closing various dialogs.

chrome/browser/resources/settings/privacy_page/privacy_page.js

 // Copyright 2015 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.
 
 /**
  * @fileoverview
  * 'settings-privacy-page' is the settings page containing privacy and
  * security settings.
  */
 (function() {
@@ skipping 207 matching lines @@
   },
 
   /** @private */
   onClearBrowsingDataTap_: function() {
     settings.navigateTo(settings.Route.CLEAR_BROWSER_DATA);
   },
 
   /** @private */
   onDialogClosed_: function() {
     settings.navigateToPreviousRoute();
+    this.$.clearBrowsingDataTrigger.focus();
   },
 
   /** @private */
   onHelpTap_: function() {
     window.open(
         'https://support.google.com/chrome/?p=settings_manage_exceptions');
   },
 
   /** @private */
   onSberChange_: function() {
@@ skipping 83 matching lines @@
                  : this.i18n('siteSettingsBlocked');
   },
 
   /** @private */
   getProtectedContentIdentifiersLabel_: function(value) {
     return value ? this.i18n('siteSettingsProtectedContentEnableIdentifiers')
                  : this.i18n('siteSettingsBlocked');
   },
 });
 })();