Fix some JS style nits.

tools/memory_inspector/chrome_app/template/main_window.js

 // Copyright 2015 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';
 
 /**
  * Singleton object representing the main window of the Memory Inspector Chrome
  * App.
  * @constructor
@@ skipping 296 matching lines @@
 MemoryInspectorWindow.prototype.storeSettings_ = function() {
   var settings = {};
   settings['terminal_visible'] = this.terminalVisible_;
   chrome.storage.local.set(settings);
 };
 
 /**
  * Listener called when main window settings were retrieved from local storage.
  * It saves them and finally shows the app window.
  * @private
- * @param {Object.<string, *>} settings The retrieved settings.
+ * @param {Object<string, *>} settings The retrieved settings.
  */
 MemoryInspectorWindow.prototype.onSettingsRetrieved_ = function(settings) {
   if (chrome.runtime.lastError === undefined && settings['terminal_visible']) {
     // Skip CSS animations by temporarily hiding everything.
     document.body.style.display = 'none';
     this.showTerminal_();
     document.body.style.display = 'block';
   }
 
   // We are finally ready to show the window.
@@ skipping 69 matching lines @@
 
 window.addEventListener('load', function() {
   // Create the singleton MemoryInspectorWindow instance and initialize it.
   var mainWindow = new MemoryInspectorWindow();
   mainWindow.initialize();
 
   // Make the instance global for debugging purposes.
   window.mainWindow = mainWindow;
 });