chrome://settings - Provide method for pages to prevent themselves being shown.

chrome/browser/resources/options/password_manager.js

 // Copyright (c) 2011 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() {
   const OptionsPage = options.OptionsPage;
   const ArrayDataModel = cr.ui.ArrayDataModel;
   const ListSingleSelectionModel = cr.ui.ListSingleSelectionModel;
 
   /////////////////////////////////////////////////////////////////////////////
@@ skipping 32 matching lines @@
 
     /** @inheritDoc */
     initializePage: function() {
       OptionsPage.prototype.initializePage.call(this);
 
       this.createSavedPasswordsList_();
       this.createPasswordExceptionsList_();
     },
 
     /** @inheritDoc */
+    canShowPage: function() {
+      return !$('manage-passwords').disabled;

[stuartmorgan, 2011/02/12 01:09:06]

As with the other case, use a function that gives an answer, not the UI state.

[Evan Stade, 2011/02/12 03:06:42]

Done.

+    },
+
+    /** @inheritDoc */
     didShowPage: function() {
       // Updating the password lists may cause a blocking platform dialog pop up
       // (Mac, Linux), so we delay this operation until the page is shown.
       chrome.send('updatePasswordLists');
     },
 
     /**
      * Creates, decorates and initializes the saved passwords list.
      * @private
      */
@@ skipping 76 matching lines @@
     PasswordManager.getInstance().setPasswordExceptionsList_(entries);
   };
 
   // Export
   return {
     PasswordManager: PasswordManager
   };
 
 });