Correct indentation, JSDoc, etc... to comply with closure linter.

ui/file_manager/gallery/js/background.js

 // Copyright 2014 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.
 
 'use strict';
 
 /**
  * @param {Object.<string, string>} stringData String data.
  * @param {VolumeManager} volumeManager Volume manager.
  */
@@ skipping 44 matching lines @@
  */
 var backgroundComponentsPromise = BackgroundComponents.load();
 
 /**
  * Resolves file system names and obtains entries.
  * @param {Array.<FileEntry>} entries Names of isolated file system.
  * @return {Promise} Promise to be fulfilled with an entry array.
  */
 function resolveEntries(entries) {
   return new Promise(function(fulfill, reject) {
-    chrome.fileManagerPrivate.resolveIsolatedEntries(entries,
-                                                     function(externalEntries) {
-      if (!chrome.runtime.lastError)
-        fulfill(externalEntries);
-      else
-        reject(chrome.runtime.lastError);
-    });
+    chrome.fileManagerPrivate.resolveIsolatedEntries(
+        entries, function(externalEntries) {
+          if (!chrome.runtime.lastError)
+            fulfill(externalEntries);
+          else
+            reject(chrome.runtime.lastError);
+        });
   });
 }
 
 /**
  * Obtains child entries.
  * @param {DirectoryEntry} entry Directory entry.
  * @return {Promise} Promise to be fulfilled with child entries.
  */
 function getChildren(entry) {
   var reader = entry.createReader();
@@ skipping 114 matching lines @@
   });
 
   launch(selectedEntriesPromise).catch(function(error) {
     console.error(error.stack || error);
   });
 });
 
 // If is is run in the browser test, wait for the test resources are installed
 // as a component extension, and then load the test resources.
 if (chrome.test) {
+  /** @type {string} */
   window.testExtensionId = 'ejhcmmdhhpdhhgmifplfmjobgegbibkn';
   chrome.runtime.onMessageExternal.addListener(function(message) {
     if (message.name !== 'testResourceLoaded')
       return;
     var script = document.createElement('script');
     script.src =
         'chrome-extension://' + window.testExtensionId +
         '/common/test_loader.js';
     document.documentElement.appendChild(script);
   });
 }