MD Settings: show when the default search engine is controlled by policy

chrome/browser/resources/settings/search_page/search_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-search-page' is the settings page containing search settings.
  */
 Polymer({
   is: 'settings-search-page',
@@ skipping 159 matching lines @@
   onManageAudioHistoryTap_: function() {
     window.open(loadTimeData.getString('manageAudioHistoryUrl'));
   },
 
   /**
    * @param {Event} event
    * @private
    */
   doNothing_: function(event) {
     event.stopPropagation();
-  }
+  },
+
+  /**
+   * @param {!chrome.settingsPrivate.PrefObject} pref
+   * @return {boolean}
+   * @private
+   */
+  isDefaultSearchControlledByPolicy_: function(pref) {
+    return pref.controlledBy == chrome.settingsPrivate.ControlledBy.USER_POLICY;
+  },
+
+  /**
+   * @param {!chrome.settingsPrivate.PrefObject} pref
+   * @return {boolean}
+   * @private
+   */
+  isDefaultSearchEngineEnforced_: function(pref) {
+    return pref.enforcement == chrome.settingsPrivate.Enforcement.ENFORCED;
+  },
 });