Fix closure compiling error of file manager.

ui/file_manager/file_manager/foreground/js/file_manager_commands.js

Index: ui/file_manager/file_manager/foreground/js/file_manager_commands.js
diff --git a/ui/file_manager/file_manager/foreground/js/file_manager_commands.js b/ui/file_manager/file_manager/foreground/js/file_manager_commands.js
index 74c8dc45d4fcd3c3d1a0969fbbf2eaf954ff303c..743fb67c333805bd5a5a26ffe67c5aef3b6bca2f 100644
--- a/ui/file_manager/file_manager/foreground/js/file_manager_commands.js
+++ b/ui/file_manager/file_manager/foreground/js/file_manager_commands.js
@@ -1251,6 +1251,7 @@ CommandHandler.COMMANDS_['add-new-services'] = /** @type {Command} */ ({
   /**
    * @param {!Event} event Command event.
    * @param {!FileManager} fileManager FileManager to use.
+   * @suppress {checkTypes}
    */
   execute: function(event, fileManager) {
     fileManager.ui.suggestAppsDialog.showProviders(
@@ -1258,10 +1259,12 @@ CommandHandler.COMMANDS_['add-new-services'] = /** @type {Command} */ ({
           // If a new provider is installed, then launch it so the configuration
           // dialog is shown (if it's available).
           if (result === SuggestAppsDialog.Result.SUCCESS) {
+            // TODO(mtomasz): Pass extension_id to addProvidedFileSystem.
             chrome.fileManagerPrivate.addProvidedFileSystem(function() {
               if (chrome.runtime.lastError) {
                 // TODO(mtomasz): Handle the error and let users uninstall the
                 // extension easily.
+                console.error(chrome.runtime.lastError.message);
               }
             });
           }