[WIP] Synthetic repro for bug 693720

chrome/test/data/extensions/platform_apps/iframes/main.js

 // Copyright (c) 2012 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.
 
 chrome.test.getConfig(function(config) {
   var LOCAL_URL = 'local-iframe.html';
   var DATA_URL = 'data:text/plain,This frame should be displayed.';
   var REMOTE_URL = 'http://localhost:' + config.testServer.port
       '/extensions/platform_apps/iframes/remote-iframe.html';
+  var EXTENSION_URL = 'chrome-extension://bflfoohhdbcfojbnfcnjpifhimomlgmp/newtab.html'
 
   chrome.test.runTests([
     function localIframe() {
       var iframe = document.createElement('iframe');
       iframe.onload = chrome.test.callbackPass(function() {
         console.log('Local iframe loaded');
       });
       iframe.src = LOCAL_URL;
       document.body.appendChild(iframe);
     },
@@ skipping 50 matching lines @@
     },
 
     function remoteIframe() {
       var iframe = document.createElement('iframe');
       iframe.src = REMOTE_URL;
       document.body.appendChild(iframe);
 
       // Load failure should happen synchronously, but wait a bit before
       // declaring success.
       setTimeout(chrome.test.succeed, 500);
+    },
+
+    function extensionIframe() {
+      var iframe = document.createElement('iframe');
+      iframe.src = EXTENSION_URL;
+      document.body.appendChild(iframe);
+
+      // Load failure should happen synchronously, but wait a bit before
+      // declaring success.
+      setTimeout(chrome.test.succeed, 500);
     }
+
   ]);
 });