[DevTools] Pass sidebar and not the panel.

third_party/WebKit/Source/devtools/front_end/resources/ApplicationPanelSidebar.js

 /*
  * Copyright (C) 2007, 2008, 2010 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Joseph Pecoraro
  * Copyright (C) 2013 Samsung Electronics. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
@@ skipping 718 matching lines @@
   _updateChildren() {
     this.removeChildren();
 
     /**
      * @param {!Array.<string>} tableNames
      * @this {Resources.DatabaseTreeElement}
      */
     function tableNamesCallback(tableNames) {
       var tableNamesLength = tableNames.length;
       for (var i = 0; i < tableNamesLength; ++i)
-        this.appendChild(new Resources.DatabaseTableTreeElement(this._storagePanel, this._database, tableNames[i]));
+        this.appendChild(new Resources.DatabaseTableTreeElement(this._sidebar, this._database, tableNames[i]));
     }
     this._database.getTableNames(tableNamesCallback.bind(this));
   }
 };
 
 /**
  * @unrestricted
  */
 Resources.DatabaseTableTreeElement = class extends Resources.BaseStorageTreeElement {
+  /**
+   * @param {!Resources.ApplicationPanelSidebar} sidebar
+   * @param {!Resources.Database} database
+   * @param {string} tableName
+   */
   constructor(sidebar, database, tableName) {
     super(sidebar._panel, tableName, false);
     this._sidebar = sidebar;
     this._database = database;
     this._tableName = tableName;
     var icon = UI.Icon.create('mediumicon-table', 'resource-tree-item');
     this.setLeadingIcons([icon]);
   }
 
   get itemURL() {
@@ skipping 883 matching lines @@
 
     this.element.classList.add('storage-view');
     this._emptyWidget = new UI.EmptyWidget('');
     this._emptyWidget.show(this.element);
   }
 
   setText(text) {
     this._emptyWidget.text = text;
   }
 };