DevTools: only allow status bar items in status bars.

Source/devtools/front_end/resources/DatabaseTableView.js

 /*
  * Copyright (C) 2008 Apple Inc. 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
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 29 matching lines @@
     this.refreshButton = new WebInspector.StatusBarButton(WebInspector.UIString("Refresh"), "refresh-storage-status-bar-item");
     this.refreshButton.addEventListener("click", this._refreshButtonClicked, this);
 }
 
 WebInspector.DatabaseTableView.prototype = {
     wasShown: function()
     {
         this.update();
     },
 
-    get statusBarItems()
+    /**
+     * @return {!Array.<!WebInspector.StatusBarItem>}
+     */
+    statusBarItems: function()
     {
-        return [this.refreshButton.element];
+        return [this.refreshButton];
     },
 
     /**
      * @param {string} tableName
      * @return {string}
      */
     _escapeTableName: function(tableName)
     {
         return tableName.replace(/\"/g, "\"\"");
     },
@@ skipping 29 matching lines @@
         this.element.appendChild(errorMsgElement);
     },
 
     _refreshButtonClicked: function(event)
     {
         this.update();
     },
 
     __proto__: WebInspector.VBox.prototype
 }