MD Settings: First iteration of searching within settings.

chrome/browser/resources/settings/settings_ui/settings_ui.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-ui' implements the UI for the Settings page.
  *
  * Example:
  *
@@ skipping 23 matching lines @@
   /** @private */
   onIronActivate_: function() {
     this.$$('app-drawer').close();
   },
 
   /** @private */
   onMenuButtonTap_: function() {
     this.$$('app-drawer').toggle();
   },
 
+  /** @override */
+  ready: function() {
+    this.$$('cr-toolbar').addEventListener('search-changed', function(e) {
+      this.$$('settings-main').searchContents(e.detail);
+    }.bind(this));
+  },
+
   /** @private */
   directionDelegateChanged_: function() {
     this.$$('app-drawer').align = this.directionDelegate.isRtl() ?
         'right' : 'left';
   },
 });