Add web platform tests for cross-origin parent navigation attempts.

These replace the old text dump tests in http/test/security, one of
which has been flaky recently.

I placed the new tests alongside the same-origin child -> parent
navigation tests, but I could also see them belonging in
html/browsers/history/the-location-interface/.

Fixed: chromium:1267551
Change-Id: I67c0cae630acc7c17959ae6de2dba3a64c267798
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3350656
Auto-Submit: Titouan Rigoudy <titouan@chromium.org>
Reviewed-by: Arthur Hemery <ahemery@chromium.org>
Commit-Queue: Titouan Rigoudy <titouan@chromium.org>
Cr-Commit-Position: refs/heads/main@{#953307}
diff --git a/html/browsers/browsing-the-web/navigating-across-documents/child-navigates-parent-cross-origin.window.js b/html/browsers/browsing-the-web/navigating-across-documents/child-navigates-parent-cross-origin.window.js
new file mode 100644
index 0000000..c5bed0f
--- /dev/null
+++ b/html/browsers/browsing-the-web/navigating-across-documents/child-navigates-parent-cross-origin.window.js
@@ -0,0 +1,90 @@
+// META: script=/common/get-host-info.sub.js
+// META: script=resources/wait-for-messages.js
+
+function testNavigationFails(params) {
+  return async (t) => {
+    // Start waiting for messages before inserting the child frame, to avoid any
+    // race conditions. Note that this would be racy if we executed tests
+    // concurrently, thankfully `promise_test` executes sequentially. See also:
+    // https://github.com/web-platform-tests/rfcs/pull/75
+    const messagesPromise = waitForMessages(1);
+
+    // Execute the test in an iframe, so that the document executing the test
+    // is not navigated away mid-test in case of failure.
+    const child = document.createElement("iframe");
+    document.body.appendChild(child);
+    t.add_cleanup(() => { document.body.removeChild(child); });
+
+    const url = new URL(
+        "resources/child-navigates-parent-cross-origin-inner.html",
+        window.location);
+
+    // Load the grandchild iframe from a different origin.
+    url.host = get_host_info().REMOTE_HOST;
+
+    for (const key in params || {}) {
+      url.searchParams.set(key, params[key]);
+    }
+
+    const grandchild = child.contentDocument.createElement("iframe");
+    grandchild.src = url;
+    child.contentDocument.body.appendChild(grandchild);
+
+    const messages = await messagesPromise;
+    assert_array_equals(messages, ["error: SecurityError"]);
+  }
+}
+
+promise_test(
+    testNavigationFails(),
+    "Child document attempts to navigate cross-origin parent via location");
+
+promise_test(
+    testNavigationFails({ "property": "hash" }),
+    "Child document attempts to navigate cross-origin parent via "+
+    "location.hash");
+
+promise_test(
+    testNavigationFails({ "property": "host" }),
+    "Child document attempts to navigate cross-origin parent via "+
+    "location.host");
+
+promise_test(
+    testNavigationFails({ "property": "hostname" }),
+    "Child document attempts to navigate cross-origin parent via "+
+    "location.hostname");
+
+promise_test(
+    testNavigationFails({ "property": "href" }),
+    "Child document attempts to navigate cross-origin parent via "+
+    "location.href");
+
+promise_test(
+    testNavigationFails({ "property": "pathname" }),
+    "Child document attempts to navigate cross-origin parent via "+
+    "location.pathname");
+
+promise_test(
+    testNavigationFails({ "property": "protocol" }),
+    "Child document attempts to navigate cross-origin parent via "+
+    "location.protocol");
+
+promise_test(
+    testNavigationFails({ "property": "reload" }),
+    "Child document attempts to navigate cross-origin parent via "+
+    "location.reload()");
+
+promise_test(
+    testNavigationFails({ "property": "replace" }),
+    "Child document attempts to navigate cross-origin parent via "+
+    "location.replace()");
+
+promise_test(
+    testNavigationFails({ "property": "search" }),
+    "Child document attempts to navigate cross-origin parent via "+
+    "location.search");
+
+promise_test(
+    testNavigationFails({ "property": "xxxNonExistent" }),
+    "Child document attempts to navigate cross-origin parent via non-standard "+
+    "location property");
diff --git a/html/browsers/browsing-the-web/navigating-across-documents/resources/child-navigates-parent-cross-origin-inner.html b/html/browsers/browsing-the-web/navigating-across-documents/resources/child-navigates-parent-cross-origin-inner.html
new file mode 100644
index 0000000..72b92c8
--- /dev/null
+++ b/html/browsers/browsing-the-web/navigating-across-documents/resources/child-navigates-parent-cross-origin-inner.html
@@ -0,0 +1,20 @@
+<!doctype html>
+<script>
+const params = new URL(window.location).searchParams;
+const property = params.get("property");
+
+try {
+  if (property === null) {
+    parent.location = "foo";
+  } else if (property === "reload") {
+    parent.location.reload();
+  } else if (property === "replace") {
+    parent.location.replace("foo");
+  } else {
+    parent.location[property] = "foo";
+  }
+  parent.parent.postMessage("success", "*");
+} catch (e) {
+  parent.parent.postMessage(`error: ${e.name}`, "*");
+}
+</script>