MD Settings: Implement search URLs.

chrome/browser/resources/settings/settings_main/settings_main.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 {{about: boolean, basic: boolean, advanced: boolean}}
  */
 var MainPageVisibility;
 
 /**
@@ skipping 295 matching lines @@
           this.$$('settings-advanced-page'));
     }
     if (settings.Route.BASIC.contains(route)) {
       return /** @type {?SettingsBasicPageElement} */(
           this.$$('settings-basic-page'));
     }
     assertNotReached();
   },
 
   /**
-   * Navigates to the default search page (if necessary).
-   * @private
-   */
-  ensureInDefaultSearchPage_: function() {
-    if (settings.getCurrentRoute() != settings.Route.BASIC)
-      settings.navigateTo(settings.Route.BASIC);
-  },
-
-  /**
    * @param {string} query
    * @return {!Promise} A promise indicating that searching finished.
    */
   searchContents: function(query) {
     // Trigger rendering of the basic and advanced pages and search once ready.
     this.inSearchMode_ = true;
-    this.ensureInDefaultSearchPage_();
     this.toolbarSpinnerActive = true;
 
     return new Promise(function(resolve, reject) {
       setTimeout(function() {
         var whenSearchDone = settings.getSearchManager().search(
             query, assert(this.getPage_(settings.Route.BASIC)));
         assert(
             whenSearchDone ===
                 settings.getSearchManager().search(
                     query, assert(this.getPage_(settings.Route.ADVANCED))));
@@ skipping 18 matching lines @@
 
   /**
    * @param {(boolean|undefined)} visibility
    * @return {boolean} True unless visibility is false.
    * @private
    */
   showAdvancedSettings_: function(visibility) {
     return visibility !== false;
   },
 });