[MD settings] set route on advanced page toggle

chrome/browser/resources/settings/settings_page/settings_router.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.
 
 /**
  * @typedef {{
- *   url: string,
+ *   dialog: (string|undefined),
  *   page: string,
  *   section: string,
  *   subpage: !Array<string>,
- *   dialog: (string|undefined),
+ *   url: (string|undefined),

[Dan Beam, 2016/07/01 01:11:51]

can you just remove url from this?  and we make a type that extends this or
something?  if only the router really knows or uses URLs, we should make it
private to this class.

record types must only satisfy the fields listed in a @typedef to be considered
that type, but can have extra.

[dschuyler, 2016/07/01 22:31:22]

Dan and I discussed this offline. Tommy is working on redoing 
the routing, so it seems best to give Tommy the room to decide 
how this should be done.

  * }}
  */
 var SettingsRoute;
 
 /**
  * @fileoverview
  * 'settings-router' is a simple router for settings. Its responsibilities:
  *  - Update the URL when the routing state changes.
  *  - Initialize the routing state with the initial URL.
  *  - Process and validate all routing state changes.
@@ skipping 607 matching lines @@
           window.history.replaceState(historicState, document.title);
         }
 
         return;
       }
     }
 
     assertNotReached('Route not found: ' + JSON.stringify(newRoute));
   },
 });