MD Settings: Convert all browser proxies to use ES6 class syntax.

chrome/browser/resources/settings/search_engines_page/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.
 
 /**
  * @fileoverview A helper object used from the "Manage search engines" section
  * to interact with the browser.
  */
 
 /**
@@ skipping 33 matching lines @@
  *   alwaysOn: boolean,
  *   errorMessage: string,
  *   userName: string,
  *   historyEnabled: boolean
  * }}
  */
 var SearchPageHotwordInfo;
 
 cr.define('settings', function() {
   /** @interface */
-  function SearchEnginesBrowserProxy() {}
-
-  SearchEnginesBrowserProxy.prototype = {
+  class SearchEnginesBrowserProxy {
     /** @param {number} modelIndex */
-    setDefaultSearchEngine: function(modelIndex) {},
+    setDefaultSearchEngine(modelIndex) {}
 
     /** @param {number} modelIndex */
-    removeSearchEngine: function(modelIndex) {},
+    removeSearchEngine(modelIndex) {}
 
     /** @param {number} modelIndex */
-    searchEngineEditStarted: function(modelIndex) {},
+    searchEngineEditStarted(modelIndex) {}
 
-    searchEngineEditCancelled: function() {},
+    searchEngineEditCancelled() {}
 
     /**
      * @param {string} searchEngine
      * @param {string} keyword
      * @param {string} queryUrl
      */
-    searchEngineEditCompleted: function(searchEngine, keyword, queryUrl) {},
+    searchEngineEditCompleted(searchEngine, keyword, queryUrl) {}
 
     /** @return {!Promise<!SearchEnginesInfo>} */
-    getSearchEnginesList: function() {},
+    getSearchEnginesList() {}
 
     /**
      * @param {string} fieldName
      * @param {string} fieldValue
      * @return {!Promise<boolean>}
      */
-    validateSearchEngineInput: function(fieldName, fieldValue) {},
+    validateSearchEngineInput(fieldName, fieldValue) {}
 
     /** @return {!Promise<!SearchPageHotwordInfo>} */
-    getHotwordInfo: function() {},
+    getHotwordInfo() {}
 
     /** @param {boolean} enabled */
-    setHotwordSearchEnabled: function(enabled) {},
+    setHotwordSearchEnabled(enabled) {}
 
     /** @return {!Promise<boolean>} */
-    getGoogleNowAvailability: function() {},
-  };
+    getGoogleNowAvailability() {}
+  }
 
   /**
-   * @constructor
    * @implements {settings.SearchEnginesBrowserProxy}
    */
-  function SearchEnginesBrowserProxyImpl() {}
-  // The singleton instance_ is replaced with a test version of this wrapper
-  // during testing.
-  cr.addSingletonGetter(SearchEnginesBrowserProxyImpl);
-
-  SearchEnginesBrowserProxyImpl.prototype = {
+  class SearchEnginesBrowserProxyImpl {
     /** @override */
-    setDefaultSearchEngine: function(modelIndex) {
+    setDefaultSearchEngine(modelIndex) {
       chrome.send('setDefaultSearchEngine', [modelIndex]);
-    },
+    }
 
     /** @override */
-    removeSearchEngine: function(modelIndex) {
+    removeSearchEngine(modelIndex) {
       chrome.send('removeSearchEngine', [modelIndex]);
-    },
+    }
 
     /** @override */
-    searchEngineEditStarted: function(modelIndex) {
+    searchEngineEditStarted(modelIndex) {
       chrome.send('searchEngineEditStarted', [modelIndex]);
-    },
+    }
 
     /** @override */
-    searchEngineEditCancelled: function() {
+    searchEngineEditCancelled() {
       chrome.send('searchEngineEditCancelled');
-    },
+    }
 
     /** @override */
-    searchEngineEditCompleted: function(searchEngine, keyword, queryUrl) {
+    searchEngineEditCompleted(searchEngine, keyword, queryUrl) {
       chrome.send('searchEngineEditCompleted', [
         searchEngine,
         keyword,
         queryUrl,
       ]);
-    },
+    }
 
     /** @override */
-    getSearchEnginesList: function() {
+    getSearchEnginesList() {
       return cr.sendWithPromise('getSearchEnginesList');
-    },
+    }
 
     /** @override */
-    validateSearchEngineInput: function(fieldName, fieldValue) {
+    validateSearchEngineInput(fieldName, fieldValue) {
       return cr.sendWithPromise(
           'validateSearchEngineInput', fieldName, fieldValue);
-    },
+    }
 
     /** @override */
-    getHotwordInfo: function() {
+    getHotwordInfo() {
       return cr.sendWithPromise('getHotwordInfo');
-    },
+    }
 
     /** @override */
-    setHotwordSearchEnabled: function(enabled) {
+    setHotwordSearchEnabled(enabled) {
       chrome.send('setHotwordSearchEnabled', [enabled]);
-    },
+    }
 
     /** @override */
-    getGoogleNowAvailability: function() {
+    getGoogleNowAvailability() {
       return cr.sendWithPromise('getGoogleNowAvailability');
-    },
-  };
+    }
+  }
+
+  // The singleton instance_ is replaced with a test version of this wrapper
+  // during testing.
+  cr.addSingletonGetter(SearchEnginesBrowserProxyImpl);
 
   return {
     SearchEnginesBrowserProxy: SearchEnginesBrowserProxy,
     SearchEnginesBrowserProxyImpl: SearchEnginesBrowserProxyImpl,
   };
 });