Settings Router Refactor: Migrate to settings.Route.navigateTo calls.

chrome/browser/resources/settings/settings_page/settings_animated_pages.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-animated-pages' is a container for a page and animated subpages.
  * It provides a set of common behaviors and animations.
  *
  * Example:
@@ skipping 28 matching lines @@
     },
   },
 
   /** @override */
   created: function() {
     // Observe the light DOM so we know when it's ready.
     this.lightDomObserver_ = Polymer.dom(this).observeNodes(
         this.lightDomChanged_.bind(this));
 
     this.addEventListener('subpage-back', function() {
-      assert(this.currentRoute.section == this.section);
-      assert(this.currentRoute.subpage.length >= 1);
-
-      this.setSubpageChain(this.currentRoute.subpage.slice(0, -1));
+      settings.navigateTo(this.currentRoute.parent);
     }.bind(this));
   },
 
   /**
    * Called initially once the effective children are ready.
    * @private
    */
   lightDomChanged_: function() {
     if (this.lightDomReady_)
       return;
@@ skipping 71 matching lines @@
     // Set the subpage's id for use by neon-animated-pages.
     var subpage = /** @type {{_content: DocumentFragment}} */(template)._content
         .querySelector('settings-subpage');
     if (!subpage.id)
       subpage.id = id;
 
     // Render synchronously so neon-animated-pages can select the subpage.
     template.if = true;
     template.render();
   },
-
-  /**
-   * Buttons in this pageset should use this method to transition to subpages.
-   * @param {!Array<string>} subpage The chain of subpages within the page.
-   */
-  setSubpageChain: function(subpage) {
-    var node = window.event.currentTarget;
-    var page;
-    while (node) {
-      if (node.dataset && node.dataset.page)
-        page = node.dataset.page;
-      // A shadow root has a |host| rather than a |parentNode|.
-      node = node.host || node.parentNode;
-    }
-    this.currentRoute = {
-      page: page,
-      section: subpage.length > 0 ? this.section : '',
-      subpage: subpage,
-    };
-  },
 });