Fix CSP frame-ancestors wpt tests.

These tests were broken by
https://github.com/web-platform-tests/wpt/commit/38be30e734ea5afcdc5801613f197d17d716674d.

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

third_party/blink/web_tests/external/wpt/content-security-policy/frame-ancestors/frame-ancestors-nested-cross-in-cross-none-block-expected.txt

-This is a testharness.js-based test.
-FAIL A 'frame-ancestors' CSP directive with a value 'none' should block rendering in nested frames. assert_unreached: Inner IFrame msg: undefined Reached unreachable code
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/content-security-policy/frame-ancestors/frame-ancestors-nested-cross-in-cross-self-block-expected.txt

-This is a testharness.js-based test.
-FAIL A 'frame-ancestors' CSP directive with a value 'same' should block render in same-origin nested frames. assert_unreached: Inner IFrame msg: undefined Reached unreachable code
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/content-security-policy/frame-ancestors/frame-ancestors-nested-cross-in-cross-url-block-expected.txt

-This is a testharness.js-based test.
-FAIL A 'frame-ancestors' CSP directive with a URL value should block or allow rendering in nested frames as appropriate. assert_unreached: Inner IFrame msg: undefined Reached unreachable code
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/content-security-policy/frame-ancestors/frame-ancestors-nested-cross-in-same-none-block-expected.txt

-This is a testharness.js-based test.
-FAIL A 'frame-ancestors' CSP directive with a value 'none' should block rendering in nested frames. assert_unreached: Inner IFrame msg: undefined Reached unreachable code
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/content-security-policy/frame-ancestors/frame-ancestors-nested-cross-in-same-self-block-expected.txt

-This is a testharness.js-based test.
-FAIL A 'frame-ancestors' CSP directive with a value 'same' should block render in same-origin nested frames. assert_unreached: Inner IFrame msg: undefined Reached unreachable code
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/content-security-policy/frame-ancestors/frame-ancestors-nested-cross-in-same-star-allow-expected.txt

-This is a testharness.js-based test.
-FAIL A 'frame-ancestors' CSP directive with a value '*' should render in nested frames. assert_unreached: Inner IFrame msg: undefined Reached unreachable code
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/content-security-policy/frame-ancestors/frame-ancestors-nested-cross-in-same-url-allow-expected.txt

-This is a testharness.js-based test.
-FAIL A 'frame-ancestors' CSP directive with a URL value should block or allow rendering in nested frames as appropriate. assert_unreached: Inner IFrame msg: undefined Reached unreachable code
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/content-security-policy/frame-ancestors/frame-ancestors-nested-cross-in-same-url-block-expected.txt

-This is a testharness.js-based test.
-FAIL A 'frame-ancestors' CSP directive with a URL value should block or allow rendering in nested frames as appropriate. assert_unreached: Inner IFrame msg: undefined Reached unreachable code
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/content-security-policy/frame-ancestors/frame-ancestors-nested-cross-in-sandboxed-cross-url-block-expected.txt

-This is a testharness.js-based test.
-FAIL A 'frame-ancestors' CSP directive with a URL value should compare against each frame's origin rather than URL, so a nested frame with a sandboxed parent frame should be blocked due to the parent having a unique origin. assert_unreached: Inner IFrame msg: undefined Reached unreachable code
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/content-security-policy/frame-ancestors/frame-ancestors-nested-same-in-cross-none-block-expected.txt

-This is a testharness.js-based test.
-FAIL A 'frame-ancestors' CSP directive with a value 'none' should block rendering in nested frames. assert_unreached: Inner IFrame msg: undefined Reached unreachable code
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/content-security-policy/frame-ancestors/frame-ancestors-nested-same-in-cross-self-block-expected.txt

-This is a testharness.js-based test.
-FAIL A 'frame-ancestors' CSP directive with a value 'same' should block render in same-origin nested frames. assert_unreached: Inner IFrame msg: undefined Reached unreachable code
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/content-security-policy/frame-ancestors/frame-ancestors-nested-same-in-cross-url-block-expected.txt

-This is a testharness.js-based test.
-FAIL A 'frame-ancestors' CSP directive with a URL value should block or allow rendering in nested frames as appropriate. assert_unreached: Inner IFrame msg: undefined Reached unreachable code
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/content-security-policy/frame-ancestors/frame-ancestors-nested-same-in-same-none-block-expected.txt

-This is a testharness.js-based test.
-FAIL A 'frame-ancestors' CSP directive with a value 'none' should block rendering in nested frames. assert_unreached: Inner IFrame msg: undefined Reached unreachable code
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/content-security-policy/frame-ancestors/frame-ancestors-nested-same-in-same-url-block-expected.txt

-This is a testharness.js-based test.
-FAIL A 'frame-ancestors' CSP directive with a URL value should block or allow rendering in nested frames as appropriate. assert_unreached: Inner IFrame msg: undefined Reached unreachable code
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/content-security-policy/frame-ancestors/frame-ancestors-none-block-expected.txt

-This is a testharness.js-based test.
-FAIL A 'frame-ancestors' CSP directive with a value 'none' should block rendering. assert_unreached: The IFrame should have been blocked (or cross-origin). It wasn't. Reached unreachable code
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/content-security-policy/frame-ancestors/frame-ancestors-self-block-expected.txt

-This is a testharness.js-based test.
-FAIL A 'frame-ancestors' CSP directive with a value 'self' should block rendering. assert_unreached: The IFrame should have been blocked (or cross-origin). It wasn't. Reached unreachable code
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/content-security-policy/frame-ancestors/frame-ancestors-star-allow-crossorigin-expected.txt

-This is a testharness.js-based test.
-FAIL A 'frame-ancestors' CSP directive with '*' should allow rendering. assert_unreached: The IFrame should have been blocked (or cross-origin). It wasn't. Reached unreachable code
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/content-security-policy/frame-ancestors/frame-ancestors-url-block-expected.txt

-This is a testharness.js-based test.
-FAIL A 'frame-ancestors' CSP directive with a URL which doesn't match this origin should be blocked. assert_unreached: The IFrame should have been blocked (or cross-origin). It wasn't. Reached unreachable code
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/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;