Settings Router Refactor: Kill settings-router.

chrome/browser/resources/settings/device_page/device_page.js

 // Copyright 2016 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-device-page' is the settings page for device and
  * peripheral settings.
  */
 Polymer({
   is: 'settings-device-page',
 
   behaviors: [
     I18nBehavior,
     WebUIListenerBehavior,
+    settings.RouteObserverBehavior,
   ],
 
   properties: {
-    /** The current active route. */
-    currentRoute: {
-      type: Object,
-      notify: true,
-      observers: 'currentRouteChanged_',
-    },
-
     /** Preferences state. */
     prefs: {
       type: Object,
       notify: true,
     },
 
     /** @private */
     hasMouse_: {
       type: Boolean,
       value: false,
@@ skipping 77 matching lines @@
   },
 
   /**
    * Handler for tapping the Display settings menu item.
    * @private
    */
   onDisplayTap_: function() {
     settings.navigateTo(settings.Route.DISPLAY);
   },
 
-  /** @private */
-  currentRouteChanged_: function() {
+  /** @protected */

[Dan Beam, 2016/08/05 18:25:18]

can this be @override instead?

[tommycli, 2016/08/05 18:54:05]

Unfortunately, no. RouteObserverBehavior is not detected as a superclass of this
element.

+  currentRouteChanged: function() {
     this.checkPointerSubpage_();
   },
 
   /**
    * @param {boolean} hasMouse
    * @param {boolean} hasTouchpad
    * @private
    */
   pointersChanged_: function(hasMouse, hasTouchpad) {
     this.$.pointersRow.hidden = !hasMouse && !hasTouchpad;
     this.checkPointerSubpage_();
   },
 
   /**
    * Leaves the pointer subpage if all pointing devices are detached.
    * @private
    */
   checkPointerSubpage_: function() {
     if (!this.hasMouse_ && !this.hasTouchpad_ &&
-        this.currentRoute == settings.Route.POINTERS) {
+        settings.getCurrentRoute() == settings.Route.POINTERS) {
       this.$.pages.fire('subpage-back');
     }
   },
 });