md-settings: add routing to chrome://settings/resetProfileSettings.

chrome/browser/resources/settings/reset_page/reset_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-reset-page' is the settings page containing reset
  * settings.
  *
  * Example:
  *
  *    <iron-animated-pages>
  *      <settings-reset-page prefs="{{prefs}}">
  *      </settings-reset-page>
  *      ... other pages ...
  *    </iron-animated-pages>
  */
 Polymer({
   is: 'settings-reset-page',
 
+  behaviors: [settings.RouteObserverBehavior],
+
   properties: {
 <if expr="chromeos">
     /** @private */
     showPowerwashDialog_: Boolean,
 </if>
 
     /** @private */
     allowPowerwash_: {
       type: Boolean,
       value: cr.isChromeOS ? loadTimeData.getBoolean('allowPowerwash') : false
     },
   },
 
+  /** @protected */
+  currentRouteChanged: function() {
+    if (settings.getCurrentRoute() == settings.Route.RESET_DIALOG) {
+      this.$.resetProfileDialog.get().open();
+    }
+  },
+
   /** @private */
   onShowResetProfileDialog_: function() {
-    this.$.resetProfileDialog.get().open();
+    settings.navigateTo(settings.Route.RESET_DIALOG);
+  },
+
+  /** @private */
+  onResetProfileDialogClose_: function() {
+    settings.navigateToPreviousRoute();
   },
 
 <if expr="chromeos">
   /** @private */
   onShowPowerwashDialog_: function() {
     this.showPowerwashDialog_ = true;
   },
 
   /** @private */
   onPowerwashDialogClose_: function() {
     this.showPowerwashDialog_ = false;
   },
 </if>
 });