Bug 1577616 [wpt PR 18757] - Fix CSP frame-ancestors wpt tests., a=testonly

Automatic update from web-platform-tests
Fix CSP frame-ancestors wpt tests.

These tests were broken by
38be30e734.

Bug: 759184
Change-Id: I39a9bc3da1d5a955975ce35a3201613c4efba010
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1776600
Reviewed-by: Robert Ma <robertma@chromium.org>
Commit-Queue: Lucas Gadani <lfg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#691836}

--

wpt-commits: df282228c4a063651299131cb246b71d8c71b3d6
wpt-pr: 18757

testing/web-platform/tests/content-security-policy/frame-ancestors/support/frame-ancestors-test.sub.js

@@ -26,7 +26,7 @@ window.addEventListener("message", function (e) {
         window.parent.postMessage(e.data, "*");
     else
         if (e.data.type === 'test_result')
-            endTest(e.data.failed, "Inner IFrame msg: " + e.data.msg);
+            endTest(e.data.failed, "Inner IFrame msg: " + e.data.message);
 });
 
 function injectNestedIframe(policy, parent, child, expectation, isSandboxed) {
@@ -67,6 +67,7 @@ function iframeLoaded(expectBlock) {
         var failed = true;
         var message = "";
         try {
+            ev.target.contentWindow.location.href;
             if (expectBlock) {
                 message = "The IFrame should have been blocked (or cross-origin). It wasn't.";
                 failed = true;