Bug 1233497 - Swap a busted CPOW with a working one in browser_waitForFocus. r=billm

--HG--
extra : commitid : Hx4GCM6BWN6
extra : rebase_source : ad038617954dde4efe181b260305d7f6549106f4

testing/mochitest/tests/browser/browser_waitForFocus.js

@@ -50,7 +50,7 @@ add_task(function *() {
 
   yield SimpleTest.promiseFocus(browser.contentWindowAsCPOW.frames[0]);
 
-  is(browser.contentDocumentAsCPOW.activeElement.localName, "iframe", "Child iframe is focused");
+  is(browser.contentWindowAsCPOW.document.activeElement.localName, "iframe", "Child iframe is focused");
 
   gBrowser.removeCurrentTab();
 });