Do not create instance just to expose SyncService methods from sync_service.js

chrome/browser/resources/sync_file_system_internals/sync_service.js

Index: chrome/browser/resources/sync_file_system_internals/sync_service.js
diff --git a/chrome/browser/resources/sync_file_system_internals/sync_service.js b/chrome/browser/resources/sync_file_system_internals/sync_service.js
index 29a0be64ff7891154570d546b2eea016d9b837fd..bb6d125f9df59009f3108dc6bca9df465d1d857b 100644
--- a/chrome/browser/resources/sync_file_system_internals/sync_service.js
+++ b/chrome/browser/resources/sync_file_system_internals/sync_service.js
@@ -22,7 +22,7 @@ function getServiceStatus() {
  * Handles callback from getServiceStatus.
  * @param {string} Service status enum as a string.
  */
-SyncService.prototype.onGetServiceStatus = function(statusString) {
+SyncService.onGetServiceStatus = function(statusString) {
   $('service-status').textContent = statusString;
 }
 
@@ -37,7 +37,7 @@ function getNotificationSource() {
  * Handles callback from getNotificationSource.
  * @param {string} Notification source as a string.
  */
-SyncService.prototype.onGetNotificationSource = function(sourceString) {
+SyncService.onGetNotificationSource = function(sourceString) {
   $('notification-source').textContent = sourceString;
 }
 
@@ -64,7 +64,7 @@ function getLog() {
  * Handles callback from getUpdateLog.
  * @param {Array} list List of dictionaries containing 'time' and 'logEvent'.
  */
-SyncService.prototype.onGetLog = function(logEntries) {
+SyncService.onGetLog = function(logEntries) {
   var itemContainer = $('log-entries');
   for (var i = 0; i < logEntries.length; i++) {
     var logEntry = logEntries[i];
@@ -86,5 +86,5 @@ function main() {
 }
 
 document.addEventListener('DOMContentLoaded', main);
-return new SyncService;
+return SyncService;
 })();