From 90ea6fe6ea9420380ab0b213d386ad675bba4ec3 Mon Sep 17 00:00:00 2001
From: Henri Sivonen <hsivonen@hsivonen.fi>
Date: Mon, 14 Sep 2020 13:08:59 +0000
Subject: [PATCH] Add WPTs for testing the effect on activeElement of the
 containing doc when calling .focus() and .blur() on an OOP iframe.

Differential Revision: https://phabricator.services.mozilla.com/D81497

bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1649099
gecko-commit: 05cc29ef24ba11b59afb8954ef23d243f05b2bfd
gecko-reviewers: jgraham
---
 ...g-different-site-iframe-contentwindow.html | 36 +++++++++++++++++++
 ...-after-focusing-different-site-iframe.html | 27 ++++++++++++++
 ...cusing-same-site-iframe-contentwindow.html | 27 ++++++++++++++
 ...ement-after-focusing-same-site-iframe.html | 27 ++++++++++++++
 ...g-different-site-iframe-contentwindow.html | 27 ++++++++++++++
 ...iately-focusing-different-site-iframe.html | 16 +++++++++
 ...cusing-same-site-iframe-contentwindow.html | 27 ++++++++++++++
 ...immediately-focusing-same-site-iframe.html | 16 +++++++++
 ...erent-site-iframe-inner-contentwindow.html | 18 ++++++++++
 ...-focusing-different-site-iframe-inner.html | 18 ++++++++++
 ...t-site-iframe-outer-contentwindow.sub.html | 29 +++++++++++++++
 ...using-different-site-iframe-outer.sub.html | 29 +++++++++++++++
 ...-same-site-iframe-inner-contentwindow.html | 18 ++++++++++
 ...after-focusing-same-site-iframe-inner.html | 18 ++++++++++
 ...-same-site-iframe-outer-contentwindow.html | 29 +++++++++++++++
 ...after-focusing-same-site-iframe-outer.html | 29 +++++++++++++++
 ...erent-site-iframe-inner-contentwindow.html | 18 ++++++++++
 ...-focusing-different-site-iframe-inner.html | 18 ++++++++++
 ...t-site-iframe-outer-contentwindow.sub.html | 29 +++++++++++++++
 ...using-different-site-iframe-outer.sub.html | 29 +++++++++++++++
 ...-same-site-iframe-inner-contentwindow.html | 18 ++++++++++
 ...ately-focusing-same-site-iframe-inner.html | 18 ++++++++++
 ...-same-site-iframe-outer-contentwindow.html | 29 +++++++++++++++
 ...g-same-site-iframe-outer-contenwindow.html | 29 +++++++++++++++
 ...ately-focusing-same-site-iframe-outer.html | 29 +++++++++++++++
 ...n-in-different-site-iframes-outer.sub.html |  4 +--
 lint.ignore                                   |  1 -
 27 files changed, 610 insertions(+), 3 deletions(-)
 create mode 100644 focus/activeelement-after-focusing-different-site-iframe-contentwindow.html
 create mode 100644 focus/activeelement-after-focusing-different-site-iframe.html
 create mode 100644 focus/activeelement-after-focusing-same-site-iframe-contentwindow.html
 create mode 100644 focus/activeelement-after-focusing-same-site-iframe.html
 create mode 100644 focus/activeelement-after-immediately-focusing-different-site-iframe-contentwindow.html
 create mode 100644 focus/activeelement-after-immediately-focusing-different-site-iframe.html
 create mode 100644 focus/activeelement-after-immediately-focusing-same-site-iframe-contentwindow.html
 create mode 100644 focus/activeelement-after-immediately-focusing-same-site-iframe.html
 create mode 100644 focus/support/activeelement-after-focusing-different-site-iframe-inner-contentwindow.html
 create mode 100644 focus/support/activeelement-after-focusing-different-site-iframe-inner.html
 create mode 100644 focus/support/activeelement-after-focusing-different-site-iframe-outer-contentwindow.sub.html
 create mode 100644 focus/support/activeelement-after-focusing-different-site-iframe-outer.sub.html
 create mode 100644 focus/support/activeelement-after-focusing-same-site-iframe-inner-contentwindow.html
 create mode 100644 focus/support/activeelement-after-focusing-same-site-iframe-inner.html
 create mode 100644 focus/support/activeelement-after-focusing-same-site-iframe-outer-contentwindow.html
 create mode 100644 focus/support/activeelement-after-focusing-same-site-iframe-outer.html
 create mode 100644 focus/support/activeelement-after-immediately-focusing-different-site-iframe-inner-contentwindow.html
 create mode 100644 focus/support/activeelement-after-immediately-focusing-different-site-iframe-inner.html
 create mode 100644 focus/support/activeelement-after-immediately-focusing-different-site-iframe-outer-contentwindow.sub.html
 create mode 100644 focus/support/activeelement-after-immediately-focusing-different-site-iframe-outer.sub.html
 create mode 100644 focus/support/activeelement-after-immediately-focusing-same-site-iframe-inner-contentwindow.html
 create mode 100644 focus/support/activeelement-after-immediately-focusing-same-site-iframe-inner.html
 create mode 100644 focus/support/activeelement-after-immediately-focusing-same-site-iframe-outer-contentwindow.html
 create mode 100644 focus/support/activeelement-after-immediately-focusing-same-site-iframe-outer-contenwindow.html
 create mode 100644 focus/support/activeelement-after-immediately-focusing-same-site-iframe-outer.html

diff --git a/focus/activeelement-after-focusing-different-site-iframe-contentwindow.html b/focus/activeelement-after-focusing-different-site-iframe-contentwindow.html
new file mode 100644
index 00000000000000..b16280acbd7a85
--- /dev/null
+++ b/focus/activeelement-after-focusing-different-site-iframe-contentwindow.html
@@ -0,0 +1,36 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>activeElement when focusing different-site iframe's contentWindow</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script>
+setup({explicit_done:true});
+window.onmessage = function(e) {
+    var actual = e.data;
+    test(function() {
+        // Handle trailing events separately to get make it easier to see
+        // if they are the only deviation from the expection.
+        var endedWith = false;
+        if (actual.endsWith(",willspineventloop,")) {
+            endedWith = true;
+            actual += "innerbodyfocus,";
+        }
+        assert_false(endedWith, "Should have gotten innerbodyfocus after willspineventloop");
+    }, "Check trailing events");
+    test(function() {
+        // This is a Fission oddity
+        var endedWith = false;
+        if (actual.endsWith(",willspineventloop,innerbodyfocus,")) {
+            endedWith = true;
+            actual += "innerbodyblur,innerbodyfocus,";
+        }
+        assert_true(endedWith, "Should have gotten innerbodyfocus after willspineventloop");
+    }, "Check more trailing events");
+    test(function() {
+        assert_equals(actual, "outeronload,activeElement:BODY,willfocusiframe,didfocusiframe,activeElement:IFRAME,willbluriframe,didbluriframe,activeElement:IFRAME,willspineventloop,innerbodyfocus,innerbodyblur,innerbodyfocus,", 'Check log');
+    }, "Check result");
+    w.close();
+    done();
+};
+var w = window.open("support/activeelement-after-focusing-different-site-iframe-outer-contentwindow.sub.html");
+</script>
diff --git a/focus/activeelement-after-focusing-different-site-iframe.html b/focus/activeelement-after-focusing-different-site-iframe.html
new file mode 100644
index 00000000000000..b974252555aeba
--- /dev/null
+++ b/focus/activeelement-after-focusing-different-site-iframe.html
@@ -0,0 +1,27 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>activeElement when focusing different-site iframe</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script>
+setup({explicit_done:true});
+window.onmessage = function(e) {
+    var actual = e.data;
+    test(function() {
+        // Handle trailing events separately to get make it easier to see
+        // if they are the only deviation from the expection.
+        var endedWith = false;
+        if (actual.endsWith(",willspineventloop,")) {
+            endedWith = true;
+            actual += "innerbodyfocus,innerbodyblur,";
+        }
+        assert_false(endedWith, "Should have gotten innerbodyfocus,innerbodyblur after willspineventloop");
+    }, "Check trailing events");
+    test(function() {
+        assert_equals(actual, "outeronload,activeElement:BODY,willfocusiframe,didfocusiframe,activeElement:IFRAME,willbluriframe,didbluriframe,activeElement:BODY,willspineventloop,innerbodyfocus,innerbodyblur,", 'Check log');
+    }, "Check result");
+    w.close();
+    done();
+};
+var w = window.open("support/activeelement-after-focusing-different-site-iframe-outer.sub.html");
+</script>
diff --git a/focus/activeelement-after-focusing-same-site-iframe-contentwindow.html b/focus/activeelement-after-focusing-same-site-iframe-contentwindow.html
new file mode 100644
index 00000000000000..b4a14e721f8df6
--- /dev/null
+++ b/focus/activeelement-after-focusing-same-site-iframe-contentwindow.html
@@ -0,0 +1,27 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>activeElement when focusing same-site iframe's contentWindow</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script>
+setup({explicit_done:true});
+window.onmessage = function(e) {
+    var actual = e.data;
+    test(function() {
+        // Handle trailing events separately to get make it easier to see
+        // if they are the only deviation from the expection.
+        var endedWith = false;
+        if (actual.endsWith(",willspineventloop,")) {
+            endedWith = true;
+            actual += "innerbodyfocus,";
+        }
+        assert_false(endedWith, "Should have gotten innerbodyfocus after willspineventloop");
+    }, "Check trailing events");
+    test(function() {
+        assert_equals(actual, "outeronload,activeElement:BODY,willfocusiframe,didfocusiframe,activeElement:IFRAME,willbluriframe,didbluriframe,activeElement:IFRAME,willspineventloop,innerbodyfocus,", 'Check log');
+    }, "Check result");
+    w.close();
+    done();
+};
+var w = window.open("support/activeelement-after-focusing-same-site-iframe-outer-contentwindow.html");
+</script>
diff --git a/focus/activeelement-after-focusing-same-site-iframe.html b/focus/activeelement-after-focusing-same-site-iframe.html
new file mode 100644
index 00000000000000..55918ebf07f06a
--- /dev/null
+++ b/focus/activeelement-after-focusing-same-site-iframe.html
@@ -0,0 +1,27 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>activeElement when focusing same-site iframe</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script>
+setup({explicit_done:true});
+window.onmessage = function(e) {
+    var actual = e.data;
+    test(function() {
+        // Handle trailing events separately to get make it easier to see
+        // if they are the only deviation from the expection.
+        var endedWith = false;
+        if (actual.endsWith(",willspineventloop,")) {
+            endedWith = true;
+            actual += "innerbodyfocus,innerbodyblur,";
+        }
+        assert_false(endedWith, "Should have gotten innerbodyfocus,innerbodyblur after willspineventloop");
+    }, "Check trailing events");
+    test(function() {
+        assert_equals(actual, "outeronload,activeElement:BODY,willfocusiframe,didfocusiframe,activeElement:IFRAME,willbluriframe,didbluriframe,activeElement:BODY,willspineventloop,innerbodyfocus,innerbodyblur,", 'Check log');
+    }, "Check result");
+    w.close();
+    done();
+};
+var w = window.open("support/activeelement-after-focusing-same-site-iframe-outer.html");
+</script>
diff --git a/focus/activeelement-after-immediately-focusing-different-site-iframe-contentwindow.html b/focus/activeelement-after-immediately-focusing-different-site-iframe-contentwindow.html
new file mode 100644
index 00000000000000..4cb3c68db63b90
--- /dev/null
+++ b/focus/activeelement-after-immediately-focusing-different-site-iframe-contentwindow.html
@@ -0,0 +1,27 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>activeElement when immediately focusing different-site iframe's contentWindow</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script>
+setup({explicit_done:true});
+window.onmessage = function(e) {
+    var actual = e.data;
+    test(function() {
+        // Make the difference between Firefox and Chrome visible separately
+        // from the comparison of the entire log string failing to match.
+        var endedWith = false;
+        if (actual.endsWith(",willspineventloop,")) {
+            endedWith = true;
+            actual += "innerbodyfocus,";
+        }
+        assert_true(endedWith, "Should not have gotten innerbodyfocus after willspineventloop");
+    }, "Check trailing events");
+    test(function() {
+        assert_equals(actual, "outerparser,activeElement:BODY,willfocusiframe,didfocusiframe,activeElement:IFRAME,willbluriframe,didbluriframe,activeElement:IFRAME,willspineventloop,innerbodyfocus,", 'Check log');
+    }, "Check result");
+    w.close();
+    done();
+};
+var w = window.open("support/activeelement-after-immediately-focusing-different-site-iframe-outer-contentwindow.sub.html");
+</script>
diff --git a/focus/activeelement-after-immediately-focusing-different-site-iframe.html b/focus/activeelement-after-immediately-focusing-different-site-iframe.html
new file mode 100644
index 00000000000000..67bf733bc1e633
--- /dev/null
+++ b/focus/activeelement-after-immediately-focusing-different-site-iframe.html
@@ -0,0 +1,16 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>activeElement when immediately focusing different-site iframe</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script>
+setup({explicit_done:true});
+window.onmessage = function(e) {
+    test(function() {
+        assert_equals(e.data, "outerparser,activeElement:BODY,willfocusiframe,didfocusiframe,activeElement:IFRAME,willbluriframe,didbluriframe,activeElement:BODY,willspineventloop,", 'Check log');
+    }, "Check result");
+    w.close();
+    done();
+};
+var w = window.open("support/activeelement-after-immediately-focusing-different-site-iframe-outer.sub.html");
+</script>
diff --git a/focus/activeelement-after-immediately-focusing-same-site-iframe-contentwindow.html b/focus/activeelement-after-immediately-focusing-same-site-iframe-contentwindow.html
new file mode 100644
index 00000000000000..81dbfd28d03872
--- /dev/null
+++ b/focus/activeelement-after-immediately-focusing-same-site-iframe-contentwindow.html
@@ -0,0 +1,27 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>activeElement when immediately focusing same-site iframe's contentWindow</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script>
+setup({explicit_done:true});
+window.onmessage = function(e) {
+    var actual = e.data;
+    test(function() {
+        // Make the difference between Firefox and Chrome visible separately
+        // from the comparison of the entire log string failing to match.
+        var endedWith = false;
+        if (actual.endsWith(",willspineventloop,")) {
+            endedWith = true;
+            actual += "innerbodyfocus,";
+        }
+        assert_true(endedWith, "Should not have gotten innerbodyfocus after willspineventloop");
+    }, "Check trailing events");
+    test(function() {
+        assert_equals(actual, "outerparse,activeElement:BODY,willfocusiframe,didfocusiframe,activeElement:IFRAME,willbluriframe,didbluriframe,activeElement:IFRAME,willspineventloop,innerbodyfocus,", 'Check log');
+    }, "Check result");
+    w.close();
+    done();
+};
+var w = window.open("support/activeelement-after-immediately-focusing-same-site-iframe-outer-contentwindow.html");
+</script>
diff --git a/focus/activeelement-after-immediately-focusing-same-site-iframe.html b/focus/activeelement-after-immediately-focusing-same-site-iframe.html
new file mode 100644
index 00000000000000..a035af072d3074
--- /dev/null
+++ b/focus/activeelement-after-immediately-focusing-same-site-iframe.html
@@ -0,0 +1,16 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>activeElement when immediately focusing same-site iframe</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script>
+setup({explicit_done:true});
+window.onmessage = function(e) {
+    test(function() {
+        assert_equals(e.data, "outerparse,activeElement:BODY,willfocusiframe,didfocusiframe,activeElement:IFRAME,willbluriframe,didbluriframe,activeElement:BODY,willspineventloop,", 'Check log');
+    }, "Check result");
+    w.close();
+    done();
+};
+var w = window.open("support/activeelement-after-immediately-focusing-same-site-iframe-outer.html");
+</script>
diff --git a/focus/support/activeelement-after-focusing-different-site-iframe-inner-contentwindow.html b/focus/support/activeelement-after-focusing-different-site-iframe-inner-contentwindow.html
new file mode 100644
index 00000000000000..bc78e6e0538c4d
--- /dev/null
+++ b/focus/support/activeelement-after-focusing-different-site-iframe-inner-contentwindow.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8">
+    <title>Inner document</title>
+</head>
+<body>
+<h1>Inner</h1>
+<script>
+document.body.onfocus = function() {
+    parent.postMessage("innerbodyfocus,", "*");
+}
+document.body.onblur = function() {
+    parent.postMessage("innerbodyblur,", "*");
+}
+</script>
+</body>
+</html>
diff --git a/focus/support/activeelement-after-focusing-different-site-iframe-inner.html b/focus/support/activeelement-after-focusing-different-site-iframe-inner.html
new file mode 100644
index 00000000000000..bc78e6e0538c4d
--- /dev/null
+++ b/focus/support/activeelement-after-focusing-different-site-iframe-inner.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8">
+    <title>Inner document</title>
+</head>
+<body>
+<h1>Inner</h1>
+<script>
+document.body.onfocus = function() {
+    parent.postMessage("innerbodyfocus,", "*");
+}
+document.body.onblur = function() {
+    parent.postMessage("innerbodyblur,", "*");
+}
+</script>
+</body>
+</html>
diff --git a/focus/support/activeelement-after-focusing-different-site-iframe-outer-contentwindow.sub.html b/focus/support/activeelement-after-focusing-different-site-iframe-outer-contentwindow.sub.html
new file mode 100644
index 00000000000000..fd66cbaa55c204
--- /dev/null
+++ b/focus/support/activeelement-after-focusing-different-site-iframe-outer-contentwindow.sub.html
@@ -0,0 +1,29 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>activeElement when focusing different-site iframe's contenWindow</title>
+<script>
+let log = "";
+function getLog() {
+    return log;
+}
+window.onmessage = function(e) {
+    log += e.data;
+};
+window.onload = function() {
+    log += "outeronload,";
+    log += "activeElement:" + document.activeElement.tagName + ",";
+    log += "willfocusiframe,";
+    document.getElementsByTagName("iframe")[0].contentWindow.focus();
+    log += "didfocusiframe,";
+    log += "activeElement:" + document.activeElement.tagName + ",";
+    log += "willbluriframe,";
+    document.getElementsByTagName("iframe")[0].contentWindow.blur();
+    log += "didbluriframe,";
+    log += "activeElement:" + document.activeElement.tagName + ",";
+    log += "willspineventloop,"
+    opener.step_timeout(function() {
+        opener.postMessage(getLog(), "*");
+    }, 1500);
+}
+</script>
+<iframe src="http://{{hosts[alt][www]}}:{{ports[http][0]}}/focus/support/activeelement-after-focusing-different-site-iframe-inner-contentwindow.html"></iframe>
diff --git a/focus/support/activeelement-after-focusing-different-site-iframe-outer.sub.html b/focus/support/activeelement-after-focusing-different-site-iframe-outer.sub.html
new file mode 100644
index 00000000000000..bcbedb2f74ede9
--- /dev/null
+++ b/focus/support/activeelement-after-focusing-different-site-iframe-outer.sub.html
@@ -0,0 +1,29 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>activeElement when focusing different-site iframe</title>
+<script>
+let log = "";
+function getLog() {
+    return log;
+}
+window.onmessage = function(e) {
+    log += e.data;
+};
+window.onload = function() {
+    log += "outeronload,";
+    log += "activeElement:" + document.activeElement.tagName + ",";
+    log += "willfocusiframe,";
+    document.getElementsByTagName("iframe")[0].focus();
+    log += "didfocusiframe,";
+    log += "activeElement:" + document.activeElement.tagName + ",";
+    log += "willbluriframe,";
+    document.getElementsByTagName("iframe")[0].blur();
+    log += "didbluriframe,";
+    log += "activeElement:" + document.activeElement.tagName + ",";
+    log += "willspineventloop,"
+    opener.step_timeout(function() {
+        opener.postMessage(getLog(), "*");
+    }, 1500);
+}
+</script>
+<iframe src="http://{{hosts[alt][www]}}:{{ports[http][0]}}/focus/support/activeelement-after-focusing-different-site-iframe-inner.html"></iframe>
diff --git a/focus/support/activeelement-after-focusing-same-site-iframe-inner-contentwindow.html b/focus/support/activeelement-after-focusing-same-site-iframe-inner-contentwindow.html
new file mode 100644
index 00000000000000..bc78e6e0538c4d
--- /dev/null
+++ b/focus/support/activeelement-after-focusing-same-site-iframe-inner-contentwindow.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8">
+    <title>Inner document</title>
+</head>
+<body>
+<h1>Inner</h1>
+<script>
+document.body.onfocus = function() {
+    parent.postMessage("innerbodyfocus,", "*");
+}
+document.body.onblur = function() {
+    parent.postMessage("innerbodyblur,", "*");
+}
+</script>
+</body>
+</html>
diff --git a/focus/support/activeelement-after-focusing-same-site-iframe-inner.html b/focus/support/activeelement-after-focusing-same-site-iframe-inner.html
new file mode 100644
index 00000000000000..bc78e6e0538c4d
--- /dev/null
+++ b/focus/support/activeelement-after-focusing-same-site-iframe-inner.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8">
+    <title>Inner document</title>
+</head>
+<body>
+<h1>Inner</h1>
+<script>
+document.body.onfocus = function() {
+    parent.postMessage("innerbodyfocus,", "*");
+}
+document.body.onblur = function() {
+    parent.postMessage("innerbodyblur,", "*");
+}
+</script>
+</body>
+</html>
diff --git a/focus/support/activeelement-after-focusing-same-site-iframe-outer-contentwindow.html b/focus/support/activeelement-after-focusing-same-site-iframe-outer-contentwindow.html
new file mode 100644
index 00000000000000..63e2ac60196775
--- /dev/null
+++ b/focus/support/activeelement-after-focusing-same-site-iframe-outer-contentwindow.html
@@ -0,0 +1,29 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>activeElement when focusing same-site iframe's contentWindow</title>
+<script>
+let log = "";
+function getLog() {
+    return log;
+}
+window.onmessage = function(e) {
+    log += e.data;
+};
+window.onload = function() {
+    log += "outeronload,";
+    log += "activeElement:" + document.activeElement.tagName + ",";
+    log += "willfocusiframe,";
+    document.getElementsByTagName("iframe")[0].contentWindow.focus();
+    log += "didfocusiframe,";
+    log += "activeElement:" + document.activeElement.tagName + ",";
+    log += "willbluriframe,";
+    document.getElementsByTagName("iframe")[0].contentWindow.blur();
+    log += "didbluriframe,";
+    log += "activeElement:" + document.activeElement.tagName + ",";
+    log += "willspineventloop,"
+    opener.step_timeout(function() {
+        opener.postMessage(getLog(), "*");
+    }, 1500);
+}
+</script>
+<iframe src="activeelement-after-focusing-same-site-iframe-inner-contentwindow.html"></iframe>
diff --git a/focus/support/activeelement-after-focusing-same-site-iframe-outer.html b/focus/support/activeelement-after-focusing-same-site-iframe-outer.html
new file mode 100644
index 00000000000000..333b436ea11909
--- /dev/null
+++ b/focus/support/activeelement-after-focusing-same-site-iframe-outer.html
@@ -0,0 +1,29 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>activeElement when focusing same-site iframe</title>
+<script>
+let log = "";
+function getLog() {
+    return log;
+}
+window.onmessage = function(e) {
+    log += e.data;
+};
+window.onload = function() {
+    log += "outeronload,";
+    log += "activeElement:" + document.activeElement.tagName + ",";
+    log += "willfocusiframe,";
+    document.getElementsByTagName("iframe")[0].focus();
+    log += "didfocusiframe,";
+    log += "activeElement:" + document.activeElement.tagName + ",";
+    log += "willbluriframe,";
+    document.getElementsByTagName("iframe")[0].blur();
+    log += "didbluriframe,";
+    log += "activeElement:" + document.activeElement.tagName + ",";
+    log += "willspineventloop,"
+    opener.step_timeout(function() {
+        opener.postMessage(getLog(), "*");
+    }, 1500);
+}
+</script>
+<iframe src="activeelement-after-focusing-same-site-iframe-inner.html"></iframe>
diff --git a/focus/support/activeelement-after-immediately-focusing-different-site-iframe-inner-contentwindow.html b/focus/support/activeelement-after-immediately-focusing-different-site-iframe-inner-contentwindow.html
new file mode 100644
index 00000000000000..bc78e6e0538c4d
--- /dev/null
+++ b/focus/support/activeelement-after-immediately-focusing-different-site-iframe-inner-contentwindow.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8">
+    <title>Inner document</title>
+</head>
+<body>
+<h1>Inner</h1>
+<script>
+document.body.onfocus = function() {
+    parent.postMessage("innerbodyfocus,", "*");
+}
+document.body.onblur = function() {
+    parent.postMessage("innerbodyblur,", "*");
+}
+</script>
+</body>
+</html>
diff --git a/focus/support/activeelement-after-immediately-focusing-different-site-iframe-inner.html b/focus/support/activeelement-after-immediately-focusing-different-site-iframe-inner.html
new file mode 100644
index 00000000000000..bc78e6e0538c4d
--- /dev/null
+++ b/focus/support/activeelement-after-immediately-focusing-different-site-iframe-inner.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8">
+    <title>Inner document</title>
+</head>
+<body>
+<h1>Inner</h1>
+<script>
+document.body.onfocus = function() {
+    parent.postMessage("innerbodyfocus,", "*");
+}
+document.body.onblur = function() {
+    parent.postMessage("innerbodyblur,", "*");
+}
+</script>
+</body>
+</html>
diff --git a/focus/support/activeelement-after-immediately-focusing-different-site-iframe-outer-contentwindow.sub.html b/focus/support/activeelement-after-immediately-focusing-different-site-iframe-outer-contentwindow.sub.html
new file mode 100644
index 00000000000000..10240504fe976d
--- /dev/null
+++ b/focus/support/activeelement-after-immediately-focusing-different-site-iframe-outer-contentwindow.sub.html
@@ -0,0 +1,29 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>activeElement when immediately focusing different-site iframe's contentWindow</title>
+<script>
+let log = "";
+function getLog() {
+    return log;
+}
+window.onmessage = function(e) {
+    log += e.data;
+};
+</script>
+<iframe src="http://{{hosts[alt][www]}}:{{ports[http][0]}}/focus/support/activeelement-after-immediately-focusing-different-site-iframe-inner-contentwindow.html"></iframe>
+<script>
+log += "outerparser,";
+log += "activeElement:" + document.activeElement.tagName + ",";
+log += "willfocusiframe,";
+document.getElementsByTagName("iframe")[0].contentWindow.focus();
+log += "didfocusiframe,";
+log += "activeElement:" + document.activeElement.tagName + ",";
+log += "willbluriframe,";
+document.getElementsByTagName("iframe")[0].contentWindow.blur();
+log += "didbluriframe,";
+log += "activeElement:" + document.activeElement.tagName + ",";
+log += "willspineventloop,"
+opener.step_timeout(function() {
+    opener.postMessage(getLog(), "*");
+}, 1500);
+</script>
diff --git a/focus/support/activeelement-after-immediately-focusing-different-site-iframe-outer.sub.html b/focus/support/activeelement-after-immediately-focusing-different-site-iframe-outer.sub.html
new file mode 100644
index 00000000000000..3485f1b8e4b7b3
--- /dev/null
+++ b/focus/support/activeelement-after-immediately-focusing-different-site-iframe-outer.sub.html
@@ -0,0 +1,29 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>activeElement when immediately focusing different-site iframe</title>
+<script>
+let log = "";
+function getLog() {
+    return log;
+}
+window.onmessage = function(e) {
+    log += e.data;
+};
+</script>
+<iframe src="http://{{hosts[alt][www]}}:{{ports[http][0]}}/focus/support/activeelement-after-immediately-focusing-different-site-iframe-inner.html"></iframe>
+<script>
+log += "outerparser,";
+log += "activeElement:" + document.activeElement.tagName + ",";
+log += "willfocusiframe,";
+document.getElementsByTagName("iframe")[0].focus();
+log += "didfocusiframe,";
+log += "activeElement:" + document.activeElement.tagName + ",";
+log += "willbluriframe,";
+document.getElementsByTagName("iframe")[0].blur();
+log += "didbluriframe,";
+log += "activeElement:" + document.activeElement.tagName + ",";
+log += "willspineventloop,"
+opener.step_timeout(function() {
+    opener.postMessage(getLog(), "*");
+}, 1500);
+</script>
diff --git a/focus/support/activeelement-after-immediately-focusing-same-site-iframe-inner-contentwindow.html b/focus/support/activeelement-after-immediately-focusing-same-site-iframe-inner-contentwindow.html
new file mode 100644
index 00000000000000..bc78e6e0538c4d
--- /dev/null
+++ b/focus/support/activeelement-after-immediately-focusing-same-site-iframe-inner-contentwindow.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8">
+    <title>Inner document</title>
+</head>
+<body>
+<h1>Inner</h1>
+<script>
+document.body.onfocus = function() {
+    parent.postMessage("innerbodyfocus,", "*");
+}
+document.body.onblur = function() {
+    parent.postMessage("innerbodyblur,", "*");
+}
+</script>
+</body>
+</html>
diff --git a/focus/support/activeelement-after-immediately-focusing-same-site-iframe-inner.html b/focus/support/activeelement-after-immediately-focusing-same-site-iframe-inner.html
new file mode 100644
index 00000000000000..bc78e6e0538c4d
--- /dev/null
+++ b/focus/support/activeelement-after-immediately-focusing-same-site-iframe-inner.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8">
+    <title>Inner document</title>
+</head>
+<body>
+<h1>Inner</h1>
+<script>
+document.body.onfocus = function() {
+    parent.postMessage("innerbodyfocus,", "*");
+}
+document.body.onblur = function() {
+    parent.postMessage("innerbodyblur,", "*");
+}
+</script>
+</body>
+</html>
diff --git a/focus/support/activeelement-after-immediately-focusing-same-site-iframe-outer-contentwindow.html b/focus/support/activeelement-after-immediately-focusing-same-site-iframe-outer-contentwindow.html
new file mode 100644
index 00000000000000..3849f6ea2cc8d4
--- /dev/null
+++ b/focus/support/activeelement-after-immediately-focusing-same-site-iframe-outer-contentwindow.html
@@ -0,0 +1,29 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>activeElement when focusing same-site iframe's contentWindow</title>
+<script>
+let log = "";
+function getLog() {
+    return log;
+}
+window.onmessage = function(e) {
+    log += e.data;
+};
+</script>
+<iframe src="activeelement-after-immediately-focusing-same-site-iframe-inner-contentwindow.html"></iframe>
+<script>
+log += "outerparse,";
+log += "activeElement:" + document.activeElement.tagName + ",";
+log += "willfocusiframe,";
+document.getElementsByTagName("iframe")[0].contentWindow.focus();
+log += "didfocusiframe,";
+log += "activeElement:" + document.activeElement.tagName + ",";
+log += "willbluriframe,";
+document.getElementsByTagName("iframe")[0].contentWindow.blur();
+log += "didbluriframe,";
+log += "activeElement:" + document.activeElement.tagName + ",";
+log += "willspineventloop,"
+opener.step_timeout(function() {
+    opener.postMessage(getLog(), "*");
+}, 1500);
+</script>
diff --git a/focus/support/activeelement-after-immediately-focusing-same-site-iframe-outer-contenwindow.html b/focus/support/activeelement-after-immediately-focusing-same-site-iframe-outer-contenwindow.html
new file mode 100644
index 00000000000000..bafc26065c8348
--- /dev/null
+++ b/focus/support/activeelement-after-immediately-focusing-same-site-iframe-outer-contenwindow.html
@@ -0,0 +1,29 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>activeElement when focusing same-site iframe's contentWindow</title>
+<script>
+let log = "";
+function getLog() {
+    return log;
+}
+window.onmessage = function(e) {
+    log += e.data;
+};
+</script>
+<iframe src="activeelement-after-immediately-focusing-same-site-iframe-inner-contentwindow.html"></iframe>
+<script>
+log += "outerparse,";
+log += "activeElement:" + document.activeElement.tagName + ",";
+log += "willfocusiframe,";
+document.getElementsByTagName("iframe")[0].focus();
+log += "didfocusiframe,";
+log += "activeElement:" + document.activeElement.tagName + ",";
+log += "willbluriframe,";
+document.getElementsByTagName("iframe")[0].blur();
+log += "didbluriframe,";
+log += "activeElement:" + document.activeElement.tagName + ",";
+log += "willspineventloop,"
+opener.step_timeout(function() {
+    opener.postMessage(getLog(), "*");
+}, 1500);
+</script>
diff --git a/focus/support/activeelement-after-immediately-focusing-same-site-iframe-outer.html b/focus/support/activeelement-after-immediately-focusing-same-site-iframe-outer.html
new file mode 100644
index 00000000000000..f22fa98076fde1
--- /dev/null
+++ b/focus/support/activeelement-after-immediately-focusing-same-site-iframe-outer.html
@@ -0,0 +1,29 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>activeElement when focusing same-site iframe</title>
+<script>
+let log = "";
+function getLog() {
+    return log;
+}
+window.onmessage = function(e) {
+    log += e.data;
+};
+</script>
+<iframe src="activeelement-after-immediately-focusing-same-site-iframe-inner.html"></iframe>
+<script>
+log += "outerparse,";
+log += "activeElement:" + document.activeElement.tagName + ",";
+log += "willfocusiframe,";
+document.getElementsByTagName("iframe")[0].focus();
+log += "didfocusiframe,";
+log += "activeElement:" + document.activeElement.tagName + ",";
+log += "willbluriframe,";
+document.getElementsByTagName("iframe")[0].blur();
+log += "didbluriframe,";
+log += "activeElement:" + document.activeElement.tagName + ",";
+log += "willspineventloop,"
+opener.step_timeout(function() {
+    opener.postMessage(getLog(), "*");
+}, 1500);
+</script>
diff --git a/focus/support/focus-restoration-in-different-site-iframes-outer.sub.html b/focus/support/focus-restoration-in-different-site-iframes-outer.sub.html
index 91ffed11075805..ecc1af286d9477 100644
--- a/focus/support/focus-restoration-in-different-site-iframes-outer.sub.html
+++ b/focus/support/focus-restoration-in-different-site-iframes-outer.sub.html
@@ -12,11 +12,11 @@
         other = window.open("focus-restoration-in-different-site-iframes-other.html", "otherwindow", "resizable=yes");
     } else if (e.data == "other") {
         other.close();
-        setTimeout(function() {
+        opener.step_timeout(function() {
             document.getElementsByTagName("iframe")[0].contentWindow.postMessage("getlog", "*");
         }, 2000);
     } else {
-        setTimeout(function() {
+        opener.step_timeout(function() {
             opener.postMessage(getLog() + e.data, "*");
         }, 1000);
     }
diff --git a/lint.ignore b/lint.ignore
index a3b91f1a992595..d299867133ca55 100644
--- a/lint.ignore
+++ b/lint.ignore
@@ -219,7 +219,6 @@ SET TIMEOUT: webvtt/*
 SET TIMEOUT: workers/*
 SET TIMEOUT: xhr/resources/init.htm
 SET TIMEOUT: xhr/resources/xmlhttprequest-timeout.js
-SET TIMEOUT: focus/support/focus-restoration-in-different-site-iframes-outer.sub.html
 
 # generate_tests implementation and sample usage
 GENERATE_TESTS: resources/test/tests/functional/generate-callback.html