MD Settings: Add "Show Google Now cards in the launcher" row in Search section.

chrome/test/data/webui/settings/test_search_engines_browser_proxy.js

 // Copyright 2016 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.
 
 cr.define('settings_search', function() {
   /**
    * A test version of SearchEnginesBrowserProxy. Provides helper methods
    * for allowing tests to know when a method was called, as well as
    * specifying mock responses.
    *
    * @constructor
    * @implements {settings.SearchEnginesBrowserProxy}
    * @extends {settings.TestBrowserProxy}
    */
   var TestSearchEnginesBrowserProxy = function() {
     settings.TestBrowserProxy.call(this, [
       'getSearchEnginesList',
       'removeSearchEngine',
       'searchEngineEditCancelled',
       'searchEngineEditCompleted',
       'searchEngineEditStarted',
       'setDefaultSearchEngine',
       'validateSearchEngineInput',
       'getHotwordInfo',
       'setHotwordSearchEnabled',
+      'getGoogleNowAvailability',
     ]);
 
     /** @type {boolean} */
     this.hotwordSearchEnabled = false;
 
     /** @private {!SearchEnginesInfo} */
     this.searchEnginesInfo_ = {defaults: [], others: [], extensions: []};
 
     /** @private {!SearchPageHotwordInfo} */
     this.hotwordInfo_ = {
       allowed: true,
       enabled: false,
       alwaysOn: true,
       errorMessage: '',
       userName: 'user@test.org',
       historyEnabled: false,
     };
+
+    /** @type {boolean} */
+    this.googleNowAvailable = true;
   };
 
   TestSearchEnginesBrowserProxy.prototype = {
     __proto__: settings.TestBrowserProxy.prototype,
 
     /** @override */
     setDefaultSearchEngine: function(modelIndex) {
       this.methodCalled('setDefaultSearchEngine', modelIndex);
     },
 
@@ skipping 36 matching lines @@
     },
 
     /** @override */
     setHotwordSearchEnabled: function(enabled) {
       this.hotwordSearchEnabled = enabled;
       this.hotwordInfo_.enabled = true;
       this.hotwordInfo_.historyEnabled = this.hotwordInfo_.alwaysOn;
       this.methodCalled('setHotwordSearchEnabled');
     },
 
+    /** @override */
+    getGoogleNowAvailability: function() {
+      this.methodCalled('getGoogleNowAvailability');
+      return Promise.resolve(this.googleNowAvailable);
+    },
+
     /**
      * Sets the response to be returned by |getSearchEnginesList|.
      * @param {!SearchEnginesInfo} searchEnginesInfo
      */
     setSearchEnginesInfo: function(searchEnginesInfo) {
       this.searchEnginesInfo_ = searchEnginesInfo;
     },
 
     /**
      * Sets the response to be returned by |getSearchEnginesList|.
@@ skipping 26 matching lines @@
       url: "https://search.foo.com/search?p=%s",
       urlLocked: false,
     };
   }
 
   return {
     createSampleSearchEngine: createSampleSearchEngine,
     TestSearchEnginesBrowserProxy: TestSearchEnginesBrowserProxy,
   };
 });