Options: Rename chrome/browser/resources/options2 -> chrome/browser/resources/options.

chrome/browser/resources/options2/options_page.js

Index: chrome/browser/resources/options2/options_page.js
diff --git a/chrome/browser/resources/options2/options_page.js b/chrome/browser/resources/options2/options_page.js
deleted file mode 100644
index 7401694e4ac36ea58bd75543bc8f5e235f4ce79a..0000000000000000000000000000000000000000
--- a/chrome/browser/resources/options2/options_page.js
+++ /dev/null
@@ -1,908 +0,0 @@
-// 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() {
-  /////////////////////////////////////////////////////////////////////////////
-  // OptionsPage class:
-
-  /**
-   * Base class for options page.
-   * @constructor
-   * @param {string} name Options page name.
-   * @param {string} title Options page title, used for history.
-   * @extends {EventTarget}
-   */
-  function OptionsPage(name, title, pageDivName) {
-    this.name = name;
-    this.title = title;
-    this.pageDivName = pageDivName;
-    this.pageDiv = $(this.pageDivName);
-    this.tab = null;
-    this.lastFocusedElement = null;
-  }
-
-  /** @const */ var HORIZONTAL_OFFSET = 155;
-
-  /**
-   * This is the absolute difference maintained between standard and
-   * fixed-width font sizes. Refer http://crbug.com/91922.
-   */
-  OptionsPage.SIZE_DIFFERENCE_FIXED_STANDARD = 3;
-
-  /**
-   * Main level option pages. Maps lower-case page names to the respective page
-   * object.
-   * @protected
-   */
-  OptionsPage.registeredPages = {};
-
-  /**
-   * Pages which are meant to behave like modal dialogs. Maps lower-case overlay
-   * names to the respective overlay object.
-   * @protected
-   */
-  OptionsPage.registeredOverlayPages = {};
-
-  /**
-   * Gets the default page (to be shown on initial load).
-   */
-  OptionsPage.getDefaultPage = function() {
-    return BrowserOptions.getInstance();
-  };
-
-  /**
-   * Shows the default page.
-   */
-  OptionsPage.showDefaultPage = function() {
-    this.navigateToPage(this.getDefaultPage().name);
-  };
-
-  /**
-   * "Navigates" to a page, meaning that the page will be shown and the
-   * appropriate entry is placed in the history.
-   * @param {string} pageName Page name.
-   */
-  OptionsPage.navigateToPage = function(pageName) {
-    this.showPageByName(pageName, true);
-  };
-
-  /**
-   * Shows a registered page. This handles both top-level and overlay pages.
-   * @param {string} pageName Page name.
-   * @param {boolean} updateHistory True if we should update the history after
-   *     showing the page.
-   * @param {Object=} opt_propertyBag An optional bag of properties including
-   *     replaceState (if history state should be replaced instead of pushed).
-   * @private
-   */
-  OptionsPage.showPageByName = function(pageName,
-                                        updateHistory,
-                                        opt_propertyBag) {
-    // If |opt_propertyBag| is non-truthy, homogenize to object.
-    opt_propertyBag = opt_propertyBag || {};
-
-    // Find the currently visible root-level page.
-    var rootPage = null;
-    for (var name in this.registeredPages) {
-      var page = this.registeredPages[name];
-      if (page.visible && !page.parentPage) {
-        rootPage = page;
-        break;
-      }
-    }
-
-    // Find the target page.
-    var targetPage = this.registeredPages[pageName.toLowerCase()];
-    if (!targetPage || !targetPage.canShowPage()) {
-      // If it's not a page, try it as an overlay.
-      if (!targetPage && this.showOverlay_(pageName, rootPage)) {
-        if (updateHistory)
-          this.updateHistoryState_(!!opt_propertyBag.replaceState);
-        return;
-      } else {
-        targetPage = this.getDefaultPage();
-      }
-    }
-
-    pageName = targetPage.name.toLowerCase();
-    var targetPageWasVisible = targetPage.visible;
-
-    // Determine if the root page is 'sticky', meaning that it
-    // shouldn't change when showing an overlay. This can happen for special
-    // pages like Search.
-    var isRootPageLocked =
-        rootPage && rootPage.sticky && targetPage.parentPage;
-
-    var allPageNames = Array.prototype.concat.call(
-        Object.keys(this.registeredPages),
-        Object.keys(this.registeredOverlayPages));
-
-    // Notify pages if they will be hidden.
-    for (var i = 0; i < allPageNames.length; ++i) {
-      var name = allPageNames[i];
-      var page = this.registeredPages[name] ||
-                 this.registeredOverlayPages[name];
-      if (!page.parentPage && isRootPageLocked)
-        continue;
-      if (page.willHidePage && name != pageName &&
-          !page.isAncestorOfPage(targetPage)) {
-        page.willHidePage();
-      }
-    }
-
-    // Update visibilities to show only the hierarchy of the target page.
-    for (var i = 0; i < allPageNames.length; ++i) {
-      var name = allPageNames[i];
-      var page = this.registeredPages[name] ||
-                 this.registeredOverlayPages[name];
-      if (!page.parentPage && isRootPageLocked)
-        continue;
-      page.visible = name == pageName || page.isAncestorOfPage(targetPage);
-    }
-
-    // Update the history and current location.
-    if (updateHistory)
-      this.updateHistoryState_(!!opt_propertyBag.replaceState);
-
-    // Update tab title.
-    this.setTitle_(targetPage.title);
-
-    // Notify pages if they were shown.
-    for (var i = 0; i < allPageNames.length; ++i) {
-      var name = allPageNames[i];
-      var page = this.registeredPages[name] ||
-                 this.registeredOverlayPages[name];
-      if (!page.parentPage && isRootPageLocked)
-        continue;
-      if (!targetPageWasVisible && page.didShowPage &&
-          (name == pageName || page.isAncestorOfPage(targetPage))) {
-        page.didShowPage();
-      }
-    }
-  };
-
-  /**
-   * Sets the title of the page. This is accomplished by calling into the
-   * parent page API.
-   * @param {String} title The title string.
-   * @private
-   */
-  OptionsPage.setTitle_ = function(title) {
-    uber.invokeMethodOnParent('setTitle', {title: title});
-  };
-
-  /**
-   * Scrolls the page to the correct position (the top when opening an overlay,
-   * or the old scroll position a previously hidden overlay becomes visible).
-   * @private
-   */
-  OptionsPage.updateScrollPosition_ = function() {
-    var container = $('page-container');
-    var scrollTop = container.oldScrollTop || 0;
-    container.oldScrollTop = undefined;
-    window.scroll(document.body.scrollLeft, scrollTop);
-  };
-
-  /**
-   * Pushes the current page onto the history stack, overriding the last page
-   * if it is the generic chrome://settings/.
-   * @param {boolean} replace If true, allow no history events to be created.
-   * @param {object=} opt_params A bag of optional params, including:
-   *     {boolean} ignoreHash Whether to include the hash or not.
-   * @private
-   */
-  OptionsPage.updateHistoryState_ = function(replace, opt_params) {
-    var page = this.getTopmostVisiblePage();
-    var path = window.location.pathname + window.location.hash;
-    if (path)
-      path = path.slice(1).replace(/\/(?:#|$)/, '');  // Remove trailing slash.
-    // The page is already in history (the user may have clicked the same link
-    // twice). Do nothing.
-    if (path == page.name &&
-        !document.documentElement.classList.contains('loading')) {
-      return;
-    }
-
-    var hash = opt_params && opt_params.ignoreHash ? '' : window.location.hash;
-
-    // If settings are embedded, tell the outer page to set its "path" to the
-    // inner frame's path.
-    var outerPath = (page == this.getDefaultPage() ? '' : page.name) + hash;
-    uber.invokeMethodOnParent('setPath', {path: outerPath});
-
-    // If there is no path, the current location is chrome://settings/.
-    // Override this with the new page.
-    var historyFunction = path && !replace ? window.history.pushState :
-                                             window.history.replaceState;
-    historyFunction.call(window.history,
-                         {pageName: page.name},
-                         page.title,
-                         '/' + page.name + hash);
-
-    // Update tab title.
-    this.setTitle_(page.title);
-  };
-
-  /**
-   * Shows a registered Overlay page. Does not update history.
-   * @param {string} overlayName Page name.
-   * @param {OptionPage} rootPage The currently visible root-level page.
-   * @return {boolean} whether we showed an overlay.
-   */
-  OptionsPage.showOverlay_ = function(overlayName, rootPage) {
-    var overlay = this.registeredOverlayPages[overlayName.toLowerCase()];
-    if (!overlay || !overlay.canShowPage())
-      return false;
-
-    // Save the currently focused element in the page for restoration later.
-    var currentPage = this.getTopmostVisiblePage();
-    if (currentPage)
-      currentPage.lastFocusedElement = document.activeElement;
-
-    if ((!rootPage || !rootPage.sticky) && overlay.parentPage)
-      this.showPageByName(overlay.parentPage.name, false);
-
-    if (!overlay.visible) {
-      overlay.visible = true;
-      if (overlay.didShowPage) overlay.didShowPage();
-    }
-
-    // Update tab title.
-    this.setTitle_(overlay.title);
-
-    $('searchBox').setAttribute('aria-hidden', true);
-
-    return true;
-  };
-
-  /**
-   * Returns whether or not an overlay is visible.
-   * @return {boolean} True if an overlay is visible.
-   * @private
-   */
-  OptionsPage.isOverlayVisible_ = function() {
-    return this.getVisibleOverlay_() != null;
-  };
-
-  /**
-   * Returns the currently visible overlay, or null if no page is visible.
-   * @return {OptionPage} The visible overlay.
-   */
-  OptionsPage.getVisibleOverlay_ = function() {
-    var topmostPage = null;
-    for (var name in this.registeredOverlayPages) {
-      var page = this.registeredOverlayPages[name];
-      if (page.visible &&
-          (!topmostPage || page.nestingLevel > topmostPage.nestingLevel)) {
-        topmostPage = page;
-      }
-    }
-    return topmostPage;
-  };
-
-  /**
-   * Restores the last focused element on a given page.
-   */
-  OptionsPage.restoreLastFocusedElement_ = function() {
-    var currentPage = this.getTopmostVisiblePage();
-    if (currentPage.lastFocusedElement)
-      currentPage.lastFocusedElement.focus();
-  };
-
-  /**
-   * Closes the visible overlay. Updates the history state after closing the
-   * overlay.
-   */
-  OptionsPage.closeOverlay = function() {
-    var overlay = this.getVisibleOverlay_();
-    if (!overlay)
-      return;
-
-    overlay.visible = false;
-
-    if (overlay.didClosePage) overlay.didClosePage();
-    this.updateHistoryState_(false, {ignoreHash: true});
-
-    this.restoreLastFocusedElement_();
-    if (!this.isOverlayVisible_())
-      $('searchBox').removeAttribute('aria-hidden');
-  };
-
-  /**
-   * Cancels (closes) the overlay, due to the user pressing <Esc>.
-   */
-  OptionsPage.cancelOverlay = function() {
-    // Blur the active element to ensure any changed pref value is saved.
-    document.activeElement.blur();
-    var overlay = this.getVisibleOverlay_();
-    // Let the overlay handle the <Esc> if it wants to.
-    if (overlay.handleCancel) {
-      overlay.handleCancel();
-      this.restoreLastFocusedElement_();
-    } else {
-      this.closeOverlay();
-    }
-  };
-
-  /**
-   * Hides the visible overlay. Does not affect the history state.
-   * @private
-   */
-  OptionsPage.hideOverlay_ = function() {
-    var overlay = this.getVisibleOverlay_();
-    if (overlay)
-      overlay.visible = false;
-  };
-
-  /**
-   * Returns the pages which are currently visible, ordered by nesting level
-   * (ascending).
-   * @return {Array.OptionPage} The pages which are currently visible, ordered
-   * by nesting level (ascending).
-   */
-  OptionsPage.getVisiblePages_ = function() {
-    var visiblePages = [];
-    for (var name in this.registeredPages) {
-      var page = this.registeredPages[name];
-      if (page.visible)
-        visiblePages[page.nestingLevel] = page;
-    }
-    return visiblePages;
-  };
-
-  /**
-   * Returns the topmost visible page (overlays excluded).
-   * @return {OptionPage} The topmost visible page aside any overlay.
-   * @private
-   */
-  OptionsPage.getTopmostVisibleNonOverlayPage_ = function() {
-    var topPage = null;
-    for (var name in this.registeredPages) {
-      var page = this.registeredPages[name];
-      if (page.visible &&
-          (!topPage || page.nestingLevel > topPage.nestingLevel))
-        topPage = page;
-    }
-
-    return topPage;
-  };
-
-  /**
-   * Returns the topmost visible page, or null if no page is visible.
-   * @return {OptionPage} The topmost visible page.
-   */
-  OptionsPage.getTopmostVisiblePage = function() {
-    // Check overlays first since they're top-most if visible.
-    return this.getVisibleOverlay_() || this.getTopmostVisibleNonOverlayPage_();
-  };
-
-  /**
-   * Updates managed banner visibility state based on the topmost page.
-   */
-  OptionsPage.updateManagedBannerVisibility = function() {
-    var topPage = this.getTopmostVisiblePage();
-    if (topPage)
-      topPage.updateManagedBannerVisibility();
-  };
-
-  /**
-   * Shows the tab contents for the given navigation tab.
-   * @param {!Element} tab The tab that the user clicked.
-   */
-  OptionsPage.showTab = function(tab) {
-    // Search parents until we find a tab, or the nav bar itself. This allows
-    // tabs to have child nodes, e.g. labels in separately-styled spans.
-    while (tab && !tab.classList.contains('subpages-nav-tabs') &&
-           !tab.classList.contains('tab')) {
-      tab = tab.parentNode;
-    }
-    if (!tab || !tab.classList.contains('tab'))
-      return;
-
-    // Find tab bar of the tab.
-    var tabBar = tab;
-    while (tabBar && !tabBar.classList.contains('subpages-nav-tabs')) {
-      tabBar = tabBar.parentNode;
-    }
-    if (!tabBar)
-      return;
-
-    if (tabBar.activeNavTab != null) {
-      tabBar.activeNavTab.classList.remove('active-tab');
-      $(tabBar.activeNavTab.getAttribute('tab-contents')).classList.
-          remove('active-tab-contents');
-    }
-
-    tab.classList.add('active-tab');
-    $(tab.getAttribute('tab-contents')).classList.add('active-tab-contents');
-    tabBar.activeNavTab = tab;
-  };
-
-  /**
-   * Registers new options page.
-   * @param {OptionsPage} page Page to register.
-   */
-  OptionsPage.register = function(page) {
-    this.registeredPages[page.name.toLowerCase()] = page;
-    page.initializePage();
-  };
-
-  /**
-   * Find an enclosing section for an element if it exists.
-   * @param {Element} element Element to search.
-   * @return {OptionPage} The section element, or null.
-   * @private
-   */
-  OptionsPage.findSectionForNode_ = function(node) {
-    while (node = node.parentNode) {
-      if (node.nodeName == 'SECTION')
-        return node;
-    }
-    return null;
-  };
-
-  /**
-   * Registers a new Overlay page.
-   * @param {OptionsPage} overlay Overlay to register.
-   * @param {OptionsPage} parentPage Associated parent page for this overlay.
-   * @param {Array} associatedControls Array of control elements associated with
-   *   this page.
-   */
-  OptionsPage.registerOverlay = function(overlay,
-                                         parentPage,
-                                         associatedControls) {
-    this.registeredOverlayPages[overlay.name.toLowerCase()] = overlay;
-    overlay.parentPage = parentPage;
-    if (associatedControls) {
-      overlay.associatedControls = associatedControls;
-      if (associatedControls.length) {
-        overlay.associatedSection =
-            this.findSectionForNode_(associatedControls[0]);
-      }
-    }
-
-    // Reverse the button strip for views. See the documentation of
-    // reverseButtonStrip_() for an explanation of why this is necessary.
-    if (cr.isViews)
-      this.reverseButtonStrip_(overlay);
-
-    overlay.tab = undefined;
-    overlay.isOverlay = true;
-    overlay.initializePage();
-  };
-
-  /**
-   * Reverses the child elements of a button strip. This is necessary because
-   * WebKit does not alter the tab order for elements that are visually reversed
-   * using -webkit-box-direction: reverse, and the button order is reversed for
-   * views.  See https://bugs.webkit.org/show_bug.cgi?id=62664 for more
-   * information.
-   * @param {Object} overlay The overlay containing the button strip to reverse.
-   * @private
-   */
-  OptionsPage.reverseButtonStrip_ = function(overlay) {
-    var buttonStrips = overlay.pageDiv.querySelectorAll('.button-strip');
-
-    // Reverse all button-strips in the overlay.
-    for (var j = 0; j < buttonStrips.length; j++) {
-      var buttonStrip = buttonStrips[j];
-
-      var childNodes = buttonStrip.childNodes;
-      for (var i = childNodes.length - 1; i >= 0; i--)
-        buttonStrip.appendChild(childNodes[i]);
-    }
-  };
-
-  /**
-   * Callback for window.onpopstate.
-   * @param {Object} data State data pushed into history.
-   */
-  OptionsPage.setState = function(data) {
-    if (data && data.pageName) {
-      this.willClose();
-      this.showPageByName(data.pageName, false);
-    }
-  };
-
-  /**
-   * Callback for window.onbeforeunload. Used to notify overlays that they will
-   * be closed.
-   */
-  OptionsPage.willClose = function() {
-    var overlay = this.getVisibleOverlay_();
-    if (overlay && overlay.didClosePage)
-      overlay.didClosePage();
-  };
-
-  /**
-   * Freezes/unfreezes the scroll position of the root page container.
-   * @param {boolean} freeze Whether the page should be frozen.
-   * @private
-   */
-  OptionsPage.setRootPageFrozen_ = function(freeze) {
-    var container = $('page-container');
-    if (container.classList.contains('frozen') == freeze)
-      return;
-
-    if (freeze) {
-      // Lock the width, since auto width computation may change.
-      container.style.width = window.getComputedStyle(container).width;
-      container.oldScrollTop = document.body.scrollTop;
-      container.classList.add('frozen');
-      var verticalPosition =
-          container.getBoundingClientRect().top - container.oldScrollTop;
-      container.style.top = verticalPosition + 'px';
-      this.updateFrozenElementHorizontalPosition_(container);
-    } else {
-      container.classList.remove('frozen');
-      container.style.top = '';
-      container.style.left = '';
-      container.style.right = '';
-      container.style.width = '';
-    }
-  };
-
-  /**
-   * Freezes/unfreezes the scroll position of the root page based on the current
-   * page stack.
-   */
-  OptionsPage.updateRootPageFreezeState = function() {
-    var topPage = OptionsPage.getTopmostVisiblePage();
-    if (topPage)
-      this.setRootPageFrozen_(topPage.isOverlay);
-  };
-
-  /**
-   * Initializes the complete options page.  This will cause all C++ handlers to
-   * be invoked to do final setup.
-   */
-  OptionsPage.initialize = function() {
-    chrome.send('coreOptionsInitialize');
-    uber.onContentFrameLoaded();
-
-    document.addEventListener('scroll', this.handleScroll_.bind(this));
-
-    // Trigger the scroll handler manually to set the initial state.
-    this.handleScroll_();
-
-    // Shake the dialog if the user clicks outside the dialog bounds.
-    var containers = [$('overlay-container-1'), $('overlay-container-2')];
-    for (var i = 0; i < containers.length; i++) {
-      var overlay = containers[i];
-      cr.ui.overlay.setupOverlay(overlay);
-      overlay.addEventListener('cancelOverlay',
-                               OptionsPage.cancelOverlay.bind(OptionsPage));
-    }
-  };
-
-  /**
-   * Does a bounds check for the element on the given x, y client coordinates.
-   * @param {Element} e The DOM element.
-   * @param {number} x The client X to check.
-   * @param {number} y The client Y to check.
-   * @return {boolean} True if the point falls within the element's bounds.
-   * @private
-   */
-  OptionsPage.elementContainsPoint_ = function(e, x, y) {
-    var clientRect = e.getBoundingClientRect();
-    return x >= clientRect.left && x <= clientRect.right &&
-        y >= clientRect.top && y <= clientRect.bottom;
-  };
-
-  /**
-   * Called when the page is scrolled; moves elements that are position:fixed
-   * but should only behave as if they are fixed for vertical scrolling.
-   * @private
-   */
-  OptionsPage.handleScroll_ = function() {
-    this.updateAllFrozenElementPositions_();
-  };
-
-  /**
-   * Updates all frozen pages to match the horizontal scroll position.
-   * @private
-   */
-  OptionsPage.updateAllFrozenElementPositions_ = function() {
-    var frozenElements = document.querySelectorAll('.frozen');
-    for (var i = 0; i < frozenElements.length; i++)
-      this.updateFrozenElementHorizontalPosition_(frozenElements[i]);
-  };
-
-  /**
-   * Updates the given frozen element to match the horizontal scroll position.
-   * @param {HTMLElement} e The frozen element to update.
-   * @private
-   */
-  OptionsPage.updateFrozenElementHorizontalPosition_ = function(e) {
-    if (isRTL())
-      e.style.right = HORIZONTAL_OFFSET + 'px';
-    else
-      e.style.left = HORIZONTAL_OFFSET - document.body.scrollLeft + 'px';
-  };
-
-  OptionsPage.setClearPluginLSODataEnabled = function(enabled) {
-    if (enabled) {
-      document.documentElement.setAttribute(
-          'flashPluginSupportsClearSiteData', '');
-    } else {
-      document.documentElement.removeAttribute(
-          'flashPluginSupportsClearSiteData');
-    }
-  };
-
-  OptionsPage.setPepperFlashSettingsEnabled = function(enabled) {
-    if (enabled) {
-      document.documentElement.setAttribute(
-          'enablePepperFlashSettings', '');
-    } else {
-      document.documentElement.removeAttribute(
-          'enablePepperFlashSettings');
-    }
-  };
-
-  OptionsPage.prototype = {
-    __proto__: cr.EventTarget.prototype,
-
-    /**
-     * The parent page of this option page, or null for top-level pages.
-     * @type {OptionsPage}
-     */
-    parentPage: null,
-
-    /**
-     * The section on the parent page that is associated with this page.
-     * Can be null.
-     * @type {Element}
-     */
-    associatedSection: null,
-
-    /**
-     * An array of controls that are associated with this page.  The first
-     * control should be located on a top-level page.
-     * @type {OptionsPage}
-     */
-    associatedControls: null,
-
-    /**
-     * Initializes page content.
-     */
-    initializePage: function() {},
-
-    /**
-     * Updates managed banner visibility state. This function iterates over
-     * all input fields of a page and if any of these is marked as managed
-     * it triggers the managed banner to be visible. The banner can be enforced
-     * being on through the managed flag of this class but it can not be forced
-     * being off if managed items exist.
-     */
-    updateManagedBannerVisibility: function() {
-      var bannerDiv = this.pageDiv.querySelector('.managed-prefs-banner');
-      // Create a banner for the overlay if we don't have one.
-      if (!bannerDiv) {
-        bannerDiv = $('managed-prefs-banner').cloneNode(true);
-        bannerDiv.id = null;
-
-        if (this.isOverlay) {
-          var content = this.pageDiv.querySelector('.content-area');
-          content.parentElement.insertBefore(bannerDiv, content);
-        } else {
-          bannerDiv.classList.add('main-page-banner');
-          var header = this.pageDiv.querySelector('header');
-          header.appendChild(bannerDiv);
-        }
-      }
-
-      var controlledByPolicy = false;
-      var controlledByExtension = false;
-      var inputElements = this.pageDiv.querySelectorAll('input[controlled-by]');
-      for (var i = 0; i < inputElements.length; i++) {
-        if (inputElements[i].controlledBy == 'policy')
-          controlledByPolicy = true;
-        else if (inputElements[i].controlledBy == 'extension')
-          controlledByExtension = true;
-      }
-
-      if (!controlledByPolicy && !controlledByExtension) {
-        this.pageDiv.classList.remove('showing-banner');
-      } else {
-        this.pageDiv.classList.add('showing-banner');
-
-        var text = bannerDiv.querySelector('#managed-prefs-text');
-        if (controlledByPolicy && !controlledByExtension) {
-          text.textContent =
-              loadTimeData.getString('policyManagedPrefsBannerText');
-        } else if (!controlledByPolicy && controlledByExtension) {
-          text.textContent =
-              loadTimeData.getString('extensionManagedPrefsBannerText');
-        } else if (controlledByPolicy && controlledByExtension) {
-          text.textContent = loadTimeData.getString(
-              'policyAndExtensionManagedPrefsBannerText');
-        }
-      }
-    },
-
-    /**
-     * Gets the container div for this page if it is an overlay.
-     * @type {HTMLElement}
-     */
-    get container() {
-      assert(this.isOverlay);
-      return this.pageDiv.parentNode;
-    },
-
-    /**
-     * Gets page visibility state.
-     * @type {boolean}
-     */
-    get visible() {
-      // If this is an overlay dialog it is no longer considered visible while
-      // the overlay is fading out. See http://crbug.com/118629.
-      if (this.isOverlay &&
-          this.container.classList.contains('transparent')) {
-        return false;
-      }
-      return !this.pageDiv.hidden;
-    },
-
-    /**
-     * Sets page visibility.
-     * @type {boolean}
-     */
-    set visible(visible) {
-      if ((this.visible && visible) || (!this.visible && !visible))
-        return;
-
-      // If using an overlay, the visibility of the dialog is toggled at the
-      // same time as the overlay to show the dialog's out transition. This
-      // is handled in setOverlayVisible.
-      if (this.isOverlay) {
-        this.setOverlayVisible_(visible);
-      } else {
-        this.pageDiv.hidden = !visible;
-        this.onVisibilityChanged_();
-      }
-
-      cr.dispatchPropertyChange(this, 'visible', visible, !visible);
-    },
-
-    /**
-     * Shows or hides an overlay (including any visible dialog).
-     * @param {boolean} visible Whether the overlay should be visible or not.
-     * @private
-     */
-    setOverlayVisible_: function(visible) {
-      assert(this.isOverlay);
-      var pageDiv = this.pageDiv;
-      var container = this.container;
-
-      if (visible) {
-        uber.invokeMethodOnParent('beginInterceptingEvents');
-        this.pageDiv.removeAttribute('aria-hidden');
-        if (this.parentPage)
-          this.parentPage.pageDiv.setAttribute('aria-hidden', true);
-      } else {
-        if (this.parentPage)
-          this.parentPage.pageDiv.removeAttribute('aria-hidden');
-      }
-
-      if (container.hidden != visible) {
-        if (visible) {
-          // If the container is set hidden and then immediately set visible
-          // again, the fadeCompleted_ callback would cause it to be erroneously
-          // hidden again. Removing the transparent tag avoids that.
-          container.classList.remove('transparent');
-
-          // Hide all dialogs in this container since a different one may have
-          // been previously visible before fading out.
-          var pages = container.querySelectorAll('.page');
-          for (var i = 0; i < pages.length; i++)
-            pages[i].hidden = true;
-          // Show the new dialog.
-          pageDiv.hidden = false;
-        }
-        return;
-      }
-
-      if (visible) {
-        container.hidden = false;
-        pageDiv.hidden = false;
-        // NOTE: This is a hacky way to force the container to layout which
-        // will allow us to trigger the webkit transition.
-        container.scrollTop;
-        container.classList.remove('transparent');
-        this.onVisibilityChanged_();
-      } else {
-        var self = this;
-        // TODO: Use an event delegate to avoid having to subscribe and
-        // unsubscribe for webkitTransitionEnd events.
-        container.addEventListener('webkitTransitionEnd', function f(e) {
-          if (e.target != e.currentTarget || e.propertyName != 'opacity')
-            return;
-          container.removeEventListener('webkitTransitionEnd', f);
-          self.fadeCompleted_();
-        });
-        container.classList.add('transparent');
-      }
-    },
-
-    /**
-     * Called when a container opacity transition finishes.
-     * @private
-     */
-    fadeCompleted_: function() {
-      if (this.container.classList.contains('transparent')) {
-        this.pageDiv.hidden = true;
-        this.container.hidden = true;
-        this.onVisibilityChanged_();
-        if (this.nestingLevel == 1)
-          uber.invokeMethodOnParent('stopInterceptingEvents');
-      }
-    },
-
-    /**
-     * Called when a page is shown or hidden to update the root options page
-     * based on this page's visibility.
-     * @private
-     */
-    onVisibilityChanged_: function() {
-      OptionsPage.updateRootPageFreezeState();
-      OptionsPage.updateManagedBannerVisibility();
-
-      if (this.isOverlay && !this.visible)
-        OptionsPage.updateScrollPosition_();
-    },
-
-    /**
-     * The nesting level of this page.
-     * @type {number} The nesting level of this page (0 for top-level page)
-     */
-    get nestingLevel() {
-      var level = 0;
-      var parent = this.parentPage;
-      while (parent) {
-        level++;
-        parent = parent.parentPage;
-      }
-      return level;
-    },
-
-    /**
-     * Whether the page is considered 'sticky', such that it will
-     * remain a top-level page even if sub-pages change.
-     * @type {boolean} True if this page is sticky.
-     */
-    get sticky() {
-      return false;
-    },
-
-    /**
-     * Checks whether this page is an ancestor of the given page in terms of
-     * subpage nesting.
-     * @param {OptionsPage} page The potential descendent of this page.
-     * @return {boolean} True if |page| is nested under this page.
-     */
-    isAncestorOfPage: function(page) {
-      var parent = page.parentPage;
-      while (parent) {
-        if (parent == this)
-          return true;
-        parent = parent.parentPage;
-      }
-      return false;
-    },
-
-    /**
-     * Whether it should be possible to show the page.
-     * @return {boolean} True if the page should be shown.
-     */
-    canShowPage: function() {
-      return true;
-    },
-  };
-
-  // Export
-  return {
-    OptionsPage: OptionsPage
-  };
-});