From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <mattatobin@localhost.localdomain>
Date: Fri, 2 Feb 2018 04:16:08 -0500
Subject: Add m-esr52 at 52.6.0

---
 .../web-platform/tests/html/webappapis/.gitkeep    |   0
 .../animation-frames/callback-exception.html       |  27 ++
 .../animation-frames/callback-invoked.html         |  18 ++
 .../animation-frames/callback-multicalls.html      |  26 ++
 .../animation-frames/cancel-invoked.html           |  18 ++
 .../webappapis/animation-frames/idlharness.html    |  50 ++++
 .../animation-frames/same-dispatch-time.html       |  31 +++
 .../tests/html/webappapis/atob/.gitkeep            |   0
 .../tests/html/webappapis/atob/base64.html         | 306 +++++++++++++++++++++
 .../idle-callbacks/callback-exception.html         |  22 ++
 .../webappapis/idle-callbacks/callback-iframe.html |  17 ++
 .../idle-callbacks/callback-invoked.html           |  12 +
 .../idle-callbacks/callback-multiple-calls.html    |  41 +++
 .../idle-callbacks/callback-timeout.html           |  28 ++
 .../webappapis/idle-callbacks/cancel-invoked.html  |  26 ++
 .../html/webappapis/idle-callbacks/idlharness.html |  34 +++
 .../tests/html/webappapis/scripting/.gitkeep       |   0
 .../enabling-and-disabling-scripting/.gitkeep      |   0
 .../html/webappapis/scripting/event-loops/.gitkeep |   0
 .../webappapis/scripting/event-loops/contains.json |  14 +
 .../scripting/event-loops/microtask_after_raf.html |  57 ++++
 .../event-loops/microtask_after_script.html        |  55 ++++
 .../scripting/event-loops/resources/common.js      |  20 ++
 .../task_microtask_ordering-manual.html            |  64 +++++
 .../event-loops/task_microtask_ordering.html       |  85 ++++++
 .../html/webappapis/scripting/events/.gitkeep      |   0
 .../webappapis/scripting/events/body-onload.html   |  20 ++
 .../html/webappapis/scripting/events/contains.json |  18 ++
 .../event-handler-attributes-body-window.html      |  34 +++
 .../scripting/events/event-handler-javascript.html |  20 ++
 .../scripting/events/event-handler-onresize.html   |  38 +++
 .../events/event-handler-processing-algorithm.html |  63 +++++
 .../events/event-handler-spec-example.html         |  65 +++++
 .../events/inline-event-handler-ordering.html      |  52 ++++
 ...valid-uncompiled-raw-handler-compiled-late.html |  25 ++
 ...valid-uncompiled-raw-handler-compiled-once.html |  23 ++
 .../events/onerroreventhandler-frame.html          |  56 ++++
 .../scripting/events/onerroreventhandler.html      |  11 +
 .../webappapis/scripting/introduction-5/.gitkeep   |   0
 .../scripting/javascript-protocol/.gitkeep         |   0
 .../scripting/processing-model-2/.gitkeep          |   0
 .../processing-model-2/addEventListener.html       |  32 +++
 .../body-onerror-compile-error-data-url.html       |  37 +++
 .../body-onerror-compile-error.html                |  39 +++
 .../body-onerror-runtime-error.html                |  39 +++
 .../compile-error-cross-origin-setInterval.html    |  34 +++
 .../compile-error-cross-origin-setTimeout.html     |  32 +++
 .../compile-error-cross-origin.html                |  38 +++
 .../processing-model-2/compile-error-data-url.html |  36 +++
 .../compile-error-in-attribute.html                |  39 +++
 .../compile-error-in-body-onerror.html             |  28 ++
 .../compile-error-in-setInterval.html              |  39 +++
 .../compile-error-in-setTimeout.html               |  36 +++
 .../compile-error-same-origin.html                 |  36 +++
 .../processing-model-2/compile-error.html          |  38 +++
 .../scripting/processing-model-2/contains.json     |  28 ++
 .../runtime-error-cross-origin-setInterval.html    |  34 +++
 .../runtime-error-cross-origin-setTimeout.html     |  32 +++
 .../runtime-error-cross-origin.html                |  38 +++
 .../processing-model-2/runtime-error-data-url.html |  36 +++
 .../runtime-error-in-attribute.html                |  39 +++
 .../runtime-error-in-body-onerror.html             |  25 ++
 .../runtime-error-in-setInterval.html              |  39 +++
 .../runtime-error-in-setTimeout.html               |  36 +++
 .../runtime-error-in-window-onerror.html           |  29 ++
 .../runtime-error-same-origin.html                 |  36 +++
 .../processing-model-2/runtime-error.html          |  38 +++
 .../support/syntax-error-in-setInterval.js         |   9 +
 .../support/syntax-error-in-setTimeout.js          |   8 +
 .../processing-model-2/support/syntax-error.js     |   1 +
 .../support/undefined-variable-in-setInterval.js   |   9 +
 .../support/undefined-variable-in-setTimeout.js    |   8 +
 .../support/undefined-variable.js                  |   1 +
 .../window-onerror-parse-error.html                |  40 +++
 .../window-onerror-runtime-error-throw.html        |  39 +++
 .../window-onerror-runtime-error.html              |  43 +++
 ...onerror-with-cross-frame-event-listeners-1.html |  33 +++
 ...onerror-with-cross-frame-event-listeners-2.html |  33 +++
 ...onerror-with-cross-frame-event-listeners-3.html |  33 +++
 ...onerror-with-cross-frame-event-listeners-4.html |  33 +++
 .../system-state-and-capabilities/.gitkeep         |   0
 .../the-external-interface/.gitkeep                |   0
 .../the-navigator-object/.gitkeep                  |   0
 .../the-navigator-object/NavigatorID.html          |  10 +
 .../the-navigator-object/NavigatorID.js            |  63 +++++
 .../the-navigator-object/NavigatorID.worker.js     |   4 +
 .../the-navigator-object/contains.json             |  22 ++
 .../the-navigator-object/content.html              | 136 +++++++++
 .../the-navigator-object/content/001.xhtml         |  16 ++
 .../the-navigator-object/content/002.xhtml         |  19 ++
 .../the-navigator-object/content/003.xhtml         |  18 ++
 .../the-navigator-object/content/004.xhtml         |  18 ++
 .../the-navigator-object/content/005.xhtml         |  18 ++
 .../the-navigator-object/content/006.xhtml         |  18 ++
 .../get-navigatorlanguage-manual.html              |  16 ++
 .../the-navigator-object/navigator-indexed.html    |  28 ++
 .../the-navigator-object/navigatorlanguage.html    |  19 ++
 .../the-navigator-object/protocol.html             | 214 ++++++++++++++
 .../the-navigator-object/protocol/001.xhtml        |  17 ++
 .../the-navigator-object/protocol/002.xhtml        |  19 ++
 .../the-navigator-object/protocol/003.xhtml        |  18 ++
 .../the-navigator-object/protocol/004.xhtml        |  18 ++
 .../the-navigator-object/protocol/005.xhtml        |  18 ++
 .../the-navigator-object/protocol/006.xhtml        |  19 ++
 .../tests/html/webappapis/timers/.gitkeep          |   0
 .../html/webappapis/timers/evil-spec-example.html  |  23 ++
 .../tests/html/webappapis/user-prompts/.gitkeep    |   0
 .../.gitkeep                                       |   0
 .../html/webappapis/user-prompts/printing/.gitkeep |   0
 .../user-prompts/simple-dialogs/.gitkeep           |   0
 110 files changed, 3330 insertions(+)
 create mode 100644 testing/web-platform/tests/html/webappapis/.gitkeep
 create mode 100644 testing/web-platform/tests/html/webappapis/animation-frames/callback-exception.html
 create mode 100644 testing/web-platform/tests/html/webappapis/animation-frames/callback-invoked.html
 create mode 100644 testing/web-platform/tests/html/webappapis/animation-frames/callback-multicalls.html
 create mode 100644 testing/web-platform/tests/html/webappapis/animation-frames/cancel-invoked.html
 create mode 100644 testing/web-platform/tests/html/webappapis/animation-frames/idlharness.html
 create mode 100644 testing/web-platform/tests/html/webappapis/animation-frames/same-dispatch-time.html
 create mode 100644 testing/web-platform/tests/html/webappapis/atob/.gitkeep
 create mode 100644 testing/web-platform/tests/html/webappapis/atob/base64.html
 create mode 100644 testing/web-platform/tests/html/webappapis/idle-callbacks/callback-exception.html
 create mode 100644 testing/web-platform/tests/html/webappapis/idle-callbacks/callback-iframe.html
 create mode 100644 testing/web-platform/tests/html/webappapis/idle-callbacks/callback-invoked.html
 create mode 100644 testing/web-platform/tests/html/webappapis/idle-callbacks/callback-multiple-calls.html
 create mode 100644 testing/web-platform/tests/html/webappapis/idle-callbacks/callback-timeout.html
 create mode 100644 testing/web-platform/tests/html/webappapis/idle-callbacks/cancel-invoked.html
 create mode 100644 testing/web-platform/tests/html/webappapis/idle-callbacks/idlharness.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/.gitkeep
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/enabling-and-disabling-scripting/.gitkeep
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/event-loops/.gitkeep
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/event-loops/contains.json
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/event-loops/microtask_after_raf.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/event-loops/microtask_after_script.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/event-loops/resources/common.js
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/event-loops/task_microtask_ordering-manual.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/event-loops/task_microtask_ordering.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/events/.gitkeep
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/events/body-onload.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/events/contains.json
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/events/event-handler-attributes-body-window.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/events/event-handler-javascript.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/events/event-handler-onresize.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/events/event-handler-processing-algorithm.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/events/event-handler-spec-example.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/events/inline-event-handler-ordering.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/events/invalid-uncompiled-raw-handler-compiled-late.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/events/invalid-uncompiled-raw-handler-compiled-once.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/events/onerroreventhandler-frame.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/events/onerroreventhandler.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/introduction-5/.gitkeep
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/javascript-protocol/.gitkeep
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/.gitkeep
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/addEventListener.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/body-onerror-compile-error-data-url.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/body-onerror-compile-error.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/body-onerror-runtime-error.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-cross-origin-setInterval.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-cross-origin-setTimeout.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-cross-origin.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-data-url.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-in-attribute.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-in-body-onerror.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-in-setInterval.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-in-setTimeout.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-same-origin.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/contains.json
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-cross-origin-setInterval.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-cross-origin-setTimeout.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-cross-origin.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-data-url.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-in-attribute.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-in-body-onerror.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-in-setInterval.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-in-setTimeout.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-in-window-onerror.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-same-origin.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/syntax-error-in-setInterval.js
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/syntax-error-in-setTimeout.js
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/syntax-error.js
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/undefined-variable-in-setInterval.js
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/undefined-variable-in-setTimeout.js
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/undefined-variable.js
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-parse-error.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-runtime-error-throw.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-runtime-error.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-with-cross-frame-event-listeners-1.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-with-cross-frame-event-listeners-2.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-with-cross-frame-event-listeners-3.html
 create mode 100644 testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-with-cross-frame-event-listeners-4.html
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/.gitkeep
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-external-interface/.gitkeep
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/.gitkeep
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/NavigatorID.html
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/NavigatorID.js
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/NavigatorID.worker.js
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/contains.json
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content.html
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/001.xhtml
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/002.xhtml
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/003.xhtml
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/004.xhtml
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/005.xhtml
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/006.xhtml
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/get-navigatorlanguage-manual.html
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/navigator-indexed.html
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/navigatorlanguage.html
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol.html
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/001.xhtml
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/002.xhtml
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/003.xhtml
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/004.xhtml
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/005.xhtml
 create mode 100644 testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/006.xhtml
 create mode 100644 testing/web-platform/tests/html/webappapis/timers/.gitkeep
 create mode 100644 testing/web-platform/tests/html/webappapis/timers/evil-spec-example.html
 create mode 100644 testing/web-platform/tests/html/webappapis/user-prompts/.gitkeep
 create mode 100644 testing/web-platform/tests/html/webappapis/user-prompts/dialogs-implemented-using-separate-documents/.gitkeep
 create mode 100644 testing/web-platform/tests/html/webappapis/user-prompts/printing/.gitkeep
 create mode 100644 testing/web-platform/tests/html/webappapis/user-prompts/simple-dialogs/.gitkeep

(limited to 'testing/web-platform/tests/html/webappapis')

diff --git a/testing/web-platform/tests/html/webappapis/.gitkeep b/testing/web-platform/tests/html/webappapis/.gitkeep
new file mode 100644
index 000000000..e69de29bb
diff --git a/testing/web-platform/tests/html/webappapis/animation-frames/callback-exception.html b/testing/web-platform/tests/html/webappapis/animation-frames/callback-exception.html
new file mode 100644
index 000000000..3867f0c41
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/animation-frames/callback-exception.html
@@ -0,0 +1,27 @@
+<!doctype html>
+<html>
+  <head>
+    <title>requestAnimationFrame callback exception reported to error handler</title>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <link rel="help" href="https://w3c.github.io/web-performance/specs/RequestAnimationFrame/Overview.html#dom-windowanimationtiming-requestanimationframe"/>
+  </head>
+  <body>
+    <div id="log"></div>
+    <script>
+      var custom_exception = 'requestAnimationFrameException';
+      setup({allow_uncaught_exception : true});
+      async_test(function (t) {
+        addEventListener("error",function(e) {
+          t.step(function() {
+             assert_equals(e.error.message, custom_exception);
+             t.done();
+          })
+        });
+        window.requestAnimationFrame(function () {
+          throw new Error(custom_exception);
+        });
+      }, "requestAnimationFrame callback exceptions are reported to error handler");
+    </script>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/animation-frames/callback-invoked.html b/testing/web-platform/tests/html/webappapis/animation-frames/callback-invoked.html
new file mode 100644
index 000000000..ca34e455a
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/animation-frames/callback-invoked.html
@@ -0,0 +1,18 @@
+<!doctype html>
+<html>
+  <head>
+    <title>requestAnimationFrame must be triggered once</title>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <link rel="help" href="https://w3c.github.io/web-performance/specs/RequestAnimationFrame/Overview.html#dom-windowanimationtiming-requestanimationframe"/>
+  </head>
+  <body>
+    <div id="log"></div>
+    <script>
+      async_test(function (t) {
+        assert_false(document.hidden, "document.hidden must exist and be false to run this test properly");
+        window.requestAnimationFrame(t.step_func_done());
+      }, "requestAnimationFrame callback is invoked at least once before the timeout");
+    </script>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/animation-frames/callback-multicalls.html b/testing/web-platform/tests/html/webappapis/animation-frames/callback-multicalls.html
new file mode 100644
index 000000000..38f34171e
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/animation-frames/callback-multicalls.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>AnimationTiming Test: multiple calls to requestAnimationFrame with the same callback</title>
+<link rel="author" title="Intel" href="http://www.intel.com">
+<link rel="help" href="https://html.spec.whatwg.org/multipage/#dom-window-requestanimationframe">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+
+  async_test(function(t) {
+    var counter = 0;
+    window.requestAnimationFrame(callback);
+
+    function callback() {
+      ++counter;
+      if (counter == 2) {
+        t.done();
+      } else {
+        window.requestAnimationFrame(callback);
+      }
+    };
+
+  }, "Check that multiple calls to requestAnimationFrame with the same callback will result in multiple entries being in the list with that same callback.");
+
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/animation-frames/cancel-invoked.html b/testing/web-platform/tests/html/webappapis/animation-frames/cancel-invoked.html
new file mode 100644
index 000000000..d075c0fda
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/animation-frames/cancel-invoked.html
@@ -0,0 +1,18 @@
+<!doctype html>
+<html>
+  <head>
+    <title>cancelAnimationFrame does nothing</title>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <link rel="help" href="https://w3c.github.io/web-performance/specs/RequestAnimationFrame/Overview.html#dom-windowanimationtiming-cancelanimationframe"/>
+  </head>
+  <body>
+    <div id="log"></div>
+    <script>
+      test(function (t) {
+        window.cancelAnimationFrame(42);
+        assert_true(true);
+      }, "cancelAnimationFrame does nothing if there is no callback with the given handle");
+    </script>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/animation-frames/idlharness.html b/testing/web-platform/tests/html/webappapis/animation-frames/idlharness.html
new file mode 100644
index 000000000..acc6657fa
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/animation-frames/idlharness.html
@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8" />
+<title>idlharness test</title>
+<link rel="author" title="Kensaku Komatsu" href="mailto:kensaku.komatsu@gmail.com" />
+<link rel="help" href="http://www.w3.org/TR/animation-timing/#definitions"/>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/WebIDLParser.js"></script>
+<script src="/resources/idlharness.js"></script>
+</head>
+<body>
+<h1>idlharness test</h1>
+<p>This test validates the WebIDL included in the Timing control for script-based animations specification.</p>
+
+<pre id='untested_idl' style='display:none'>
+[PrimaryGlobal]
+interface Window {
+};
+</pre>
+
+<pre id='idl'>
+partial interface Window {
+  long requestAnimationFrame(FrameRequestCallback callback);
+  void cancelAnimationFrame(long handle);
+};
+
+callback FrameRequestCallback = void (DOMHighResTimeStamp time);
+</pre>
+
+<script>
+
+(function() {
+  var idl_array = new IdlArray();
+
+  idl_array.add_untested_idls(document.getElementById("untested_idl").textContent);
+  idl_array.add_idls(document.getElementById("idl").textContent);
+
+  idl_array.add_objects({Window: ["window"]});
+
+  idl_array.test();
+})();
+
+</script>
+
+<div id="log"></div>
+
+</body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/animation-frames/same-dispatch-time.html b/testing/web-platform/tests/html/webappapis/animation-frames/same-dispatch-time.html
new file mode 100644
index 000000000..e92eb61e9
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/animation-frames/same-dispatch-time.html
@@ -0,0 +1,31 @@
+<!doctype html>
+<html>
+  <head>
+    <title>requestAnimationFrame in queue get the same timestamp</title>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <link rel="help" href="http://w3c.github.io/animation-timing/#dfn-invoke-callbacks-algorithm"/>
+  </head>
+  <body>
+    <div id="log"></div>
+    <script>
+      test(function (t) {
+        var a = 0, b = 0;
+
+        /* REASONING:
+        * These two methods that will be called with a timestamp. Because
+        * they execute right after eachother, they're added to the same
+        * queue and SHOULD be timestamped with the same value.
+        */
+        window.requestAnimationFrame(function() { a = arguments[0]; });
+        window.requestAnimationFrame(function() { b = arguments[0]; });
+
+        setTimeout(function() {
+            assert_true(a != 0);
+            assert_true(b != 0);
+            assert_true(a == b);
+        }, 100);
+      }, "requestAnimationFrame will timestamp events in the same queue with the same time");
+    </script>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/atob/.gitkeep b/testing/web-platform/tests/html/webappapis/atob/.gitkeep
new file mode 100644
index 000000000..e69de29bb
diff --git a/testing/web-platform/tests/html/webappapis/atob/base64.html b/testing/web-platform/tests/html/webappapis/atob/base64.html
new file mode 100644
index 000000000..c33ab228f
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/atob/base64.html
@@ -0,0 +1,306 @@
+<!doctype html>
+<!-- Originally developed by Aryeh Gregor, funded by Google.  Copyright belongs
+to Google. -->
+<title>atob()/btoa() tests</title>
+<meta charset=utf-8>
+<div id=log></div>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script>
+/**
+ * btoa() as defined by the HTML5 spec, which mostly just references RFC4648.
+ */
+function mybtoa(s) {
+    // String conversion as required by WebIDL.
+    s = String(s);
+
+    // "The btoa() method must throw an INVALID_CHARACTER_ERR exception if the
+    // method's first argument contains any character whose code point is
+    // greater than U+00FF."
+    for (var i = 0; i < s.length; i++) {
+        if (s.charCodeAt(i) > 255) {
+            return "INVALID_CHARACTER_ERR";
+        }
+    }
+
+    var out = "";
+    for (var i = 0; i < s.length; i += 3) {
+        var groupsOfSix = [undefined, undefined, undefined, undefined];
+        groupsOfSix[0] = s.charCodeAt(i) >> 2;
+        groupsOfSix[1] = (s.charCodeAt(i) & 0x03) << 4;
+        if (s.length > i + 1) {
+            groupsOfSix[1] |= s.charCodeAt(i + 1) >> 4;
+            groupsOfSix[2] = (s.charCodeAt(i + 1) & 0x0f) << 2;
+        }
+        if (s.length > i + 2) {
+            groupsOfSix[2] |= s.charCodeAt(i + 2) >> 6;
+            groupsOfSix[3] = s.charCodeAt(i + 2) & 0x3f;
+        }
+        for (var j = 0; j < groupsOfSix.length; j++) {
+            if (typeof groupsOfSix[j] == "undefined") {
+                out += "=";
+            } else {
+                out += btoaLookup(groupsOfSix[j]);
+            }
+        }
+    }
+    return out;
+}
+
+/**
+ * Lookup table for mybtoa(), which converts a six-bit number into the
+ * corresponding ASCII character.
+ */
+function btoaLookup(idx) {
+    if (idx < 26) {
+        return String.fromCharCode(idx + 'A'.charCodeAt(0));
+    }
+    if (idx < 52) {
+        return String.fromCharCode(idx - 26 + 'a'.charCodeAt(0));
+    }
+    if (idx < 62) {
+        return String.fromCharCode(idx - 52 + '0'.charCodeAt(0));
+    }
+    if (idx == 62) {
+        return '+';
+    }
+    if (idx == 63) {
+        return '/';
+    }
+    // Throw INVALID_CHARACTER_ERR exception here -- won't be hit in the tests.
+}
+
+/**
+ * Implementation of atob() according to the HTML spec, except that instead of
+ * throwing INVALID_CHARACTER_ERR we return null.
+ */
+function myatob(input) {
+    // WebIDL requires DOMStrings to just be converted using ECMAScript
+    // ToString, which in our case amounts to calling String().
+    input = String(input);
+
+    // "Remove all space characters from input."
+    input = input.replace(/[ \t\n\f\r]/g, "");
+
+    // "If the length of input divides by 4 leaving no remainder, then: if
+    // input ends with one or two U+003D EQUALS SIGN (=) characters, remove
+    // them from input."
+    if (input.length % 4 == 0 && /==?$/.test(input)) {
+        input = input.replace(/==?$/, "");
+    }
+
+    // "If the length of input divides by 4 leaving a remainder of 1, throw an
+    // INVALID_CHARACTER_ERR exception and abort these steps."
+    //
+    // "If input contains a character that is not in the following list of
+    // characters and character ranges, throw an INVALID_CHARACTER_ERR
+    // exception and abort these steps:
+    //
+    // U+002B PLUS SIGN (+)
+    // U+002F SOLIDUS (/)
+    // U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9)
+    // U+0041 LATIN CAPITAL LETTER A to U+005A LATIN CAPITAL LETTER Z
+    // U+0061 LATIN SMALL LETTER A to U+007A LATIN SMALL LETTER Z"
+    if (input.length % 4 == 1
+    || !/^[+/0-9A-Za-z]*$/.test(input)) {
+        return null;
+    }
+
+    // "Let output be a string, initially empty."
+    var output = "";
+
+    // "Let buffer be a buffer that can have bits appended to it, initially
+    // empty."
+    //
+    // We append bits via left-shift and or.  accumulatedBits is used to track
+    // when we've gotten to 24 bits.
+    var buffer = 0;
+    var accumulatedBits = 0;
+
+    // "While position does not point past the end of input, run these
+    // substeps:"
+    for (var i = 0; i < input.length; i++) {
+        // "Find the character pointed to by position in the first column of
+        // the following table. Let n be the number given in the second cell of
+        // the same row."
+        //
+        // "Append to buffer the six bits corresponding to number, most
+        // significant bit first."
+        //
+        // atobLookup() implements the table from the spec.
+        buffer <<= 6;
+        buffer |= atobLookup(input[i]);
+
+        // "If buffer has accumulated 24 bits, interpret them as three 8-bit
+        // big-endian numbers. Append the three characters with code points
+        // equal to those numbers to output, in the same order, and then empty
+        // buffer."
+        accumulatedBits += 6;
+        if (accumulatedBits == 24) {
+            output += String.fromCharCode((buffer & 0xff0000) >> 16);
+            output += String.fromCharCode((buffer & 0xff00) >> 8);
+            output += String.fromCharCode(buffer & 0xff);
+            buffer = accumulatedBits = 0;
+        }
+
+        // "Advance position by one character."
+    }
+
+    // "If buffer is not empty, it contains either 12 or 18 bits. If it
+    // contains 12 bits, discard the last four and interpret the remaining
+    // eight as an 8-bit big-endian number. If it contains 18 bits, discard the
+    // last two and interpret the remaining 16 as two 8-bit big-endian numbers.
+    // Append the one or two characters with code points equal to those one or
+    // two numbers to output, in the same order."
+    if (accumulatedBits == 12) {
+        buffer >>= 4;
+        output += String.fromCharCode(buffer);
+    } else if (accumulatedBits == 18) {
+        buffer >>= 2;
+        output += String.fromCharCode((buffer & 0xff00) >> 8);
+        output += String.fromCharCode(buffer & 0xff);
+    }
+
+    // "Return output."
+    return output;
+}
+
+/**
+ * A lookup table for atob(), which converts an ASCII character to the
+ * corresponding six-bit number.
+ */
+function atobLookup(chr) {
+    if (/[A-Z]/.test(chr)) {
+        return chr.charCodeAt(0) - "A".charCodeAt(0);
+    }
+    if (/[a-z]/.test(chr)) {
+        return chr.charCodeAt(0) - "a".charCodeAt(0) + 26;
+    }
+    if (/[0-9]/.test(chr)) {
+        return chr.charCodeAt(0) - "0".charCodeAt(0) + 52;
+    }
+    if (chr == "+") {
+        return 62;
+    }
+    if (chr == "/") {
+        return 63;
+    }
+    // Throw exception; should not be hit in tests
+}
+
+function btoaException(input) {
+    input = String(input);
+    for (var i = 0; i < input.length; i++) {
+        if (input.charCodeAt(i) > 255) {
+            return true;
+        }
+    }
+    return false;
+}
+
+function testBtoa(input) {
+    // "The btoa() method must throw an INVALID_CHARACTER_ERR exception if the
+    // method's first argument contains any character whose code point is
+    // greater than U+00FF."
+    var normalizedInput = String(input);
+    for (var i = 0; i < normalizedInput.length; i++) {
+        if (normalizedInput.charCodeAt(i) > 255) {
+            assert_throws("InvalidCharacterError", function() { btoa(input); },
+                "Code unit " + i + " has value " + normalizedInput.charCodeAt(i) + ", which is greater than 255");
+            return;
+        }
+    }
+    assert_equals(btoa(input), mybtoa(input));
+    assert_equals(atob(btoa(input)), String(input), "atob(btoa(input)) must be the same as String(input)");
+}
+
+var tests = ["עברית", "", "ab", "abc", "abcd", "abcde",
+    // This one is thrown in because IE9 seems to fail atob(btoa()) on it.  Or
+    // possibly to fail btoa().  I actually can't tell what's happening here,
+    // but it doesn't hurt.
+    "\xff\xff\xc0",
+    // Is your DOM implementation binary-safe?
+    "\0a", "a\0b",
+    // WebIDL tests.
+    undefined, null, 7, 12, 1.5, true, false, NaN, +Infinity, -Infinity, 0, -0,
+    {toString: function() { return "foo" }},
+];
+for (var i = 0; i < 258; i++) {
+    tests.push(String.fromCharCode(i));
+}
+tests.push(String.fromCharCode(10000));
+tests.push(String.fromCharCode(65534));
+tests.push(String.fromCharCode(65535));
+
+// This is supposed to be U+10000.
+tests.push(String.fromCharCode(0xd800, 0xdc00));
+tests = tests.map(
+    function(elem) {
+        var expected = mybtoa(elem);
+        if (expected === "INVALID_CHARACTER_ERR") {
+            return ["btoa("  + format_value(elem) + ") must raise INVALID_CHARACTER_ERR", elem];
+        }
+        return ["btoa(" + format_value(elem) + ") == " + format_value(mybtoa(elem)), elem];
+    }
+);
+
+var everything = "";
+for (var i = 0; i < 256; i++) {
+    everything += String.fromCharCode(i);
+}
+tests.push(["btoa(first 256 code points concatenated)", everything]);
+
+generate_tests(testBtoa, tests);
+
+function testAtob(input) {
+    var expected = myatob(input);
+    if (expected === null) {
+        assert_throws("InvalidCharacterError", function() { atob(input) });
+        return;
+    }
+
+    assert_equals(atob(input), expected);
+}
+
+var tests = ["", "abcd", " abcd", "abcd ", " abcd===", "abcd=== ",
+    "abcd ===", "a", "ab", "abc", "abcde", String.fromCharCode(0xd800, 0xdc00),
+    "=", "==", "===", "====", "=====",
+    "a=", "a==", "a===", "a====", "a=====",
+    "ab=", "ab==", "ab===", "ab====", "ab=====",
+    "abc=", "abc==", "abc===", "abc====", "abc=====",
+    "abcd=", "abcd==", "abcd===", "abcd====", "abcd=====",
+    "abcde=", "abcde==", "abcde===", "abcde====", "abcde=====",
+    "=a", "=a=", "a=b", "a=b=", "ab=c", "ab=c=", "abc=d", "abc=d=",
+    // With whitespace
+    "ab\tcd", "ab\ncd", "ab\fcd", "ab\rcd", "ab cd", "ab\u00a0cd",
+    "ab\t\n\f\r cd", " \t\n\f\r ab\t\n\f\r cd\t\n\f\r ",
+    "ab\t\n\f\r =\t\n\f\r =\t\n\f\r ",
+    // Test if any bits are set at the end.  These should all be fine, since
+    // they end with A, which becomes 0:
+    "A", "/A", "//A", "///A", "////A",
+    // These are all bad, since they end in / (= 63, all bits set) but their
+    // length isn't a multiple of four characters, so they can't be output by
+    // btoa().  Thus one might expect some UAs to throw exceptions or otherwise
+    // object, since they could never be output by btoa(), so they're good to
+    // test.
+    "/", "A/", "AA/", "AAAA/",
+    // But this one is possible:
+    "AAA/",
+    // Binary-safety tests
+    "\0nonsense", "abcd\0nonsense",
+    // WebIDL tests
+    undefined, null, 7, 12, 1.5, true, false, NaN, +Infinity, -Infinity, 0, -0,
+    {toString: function() { return "foo" }},
+    {toString: function() { return "abcd" }},
+];
+tests = tests.map(
+    function(elem) {
+        if (myatob(elem) === null) {
+            return ["atob(" + format_value(elem) + ") must raise InvalidCharacterError", elem];
+        }
+        return ["atob(" + format_value(elem) + ") == " + format_value(myatob(elem)), elem];
+    }
+);
+
+generate_tests(testAtob, tests);
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/idle-callbacks/callback-exception.html b/testing/web-platform/tests/html/webappapis/idle-callbacks/callback-exception.html
new file mode 100644
index 000000000..fecda221d
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/idle-callbacks/callback-exception.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>requestIdleCallback callback exception reported to error handler</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<div id="log"></div>
+<script>
+  var custom_exception = 'requestIdleCallbackException';
+  setup({allow_uncaught_exception : true});
+  async_test(function (t) {
+    assert_false(document.hidden, "document.hidden must exist and be false to run this test properly");
+    addEventListener("error",function(e) {
+      t.step(function() {
+        assert_equals(e.error.message, custom_exception);
+        t.done();
+      })
+    });
+    window.requestIdleCallback(function () {
+      throw new Error(custom_exception);
+    });
+  }, "requestIdleCallback callback exceptions are reported to error handler");
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/idle-callbacks/callback-iframe.html b/testing/web-platform/tests/html/webappapis/idle-callbacks/callback-iframe.html
new file mode 100644
index 000000000..965941be1
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/idle-callbacks/callback-iframe.html
@@ -0,0 +1,17 @@
+<!doctype html>
+<meta charset=utf-8>
+<title></title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<div id="log"></div>
+<iframe style="display:none" id="frame"></iframe>
+<script>
+  async_test(function (t) {
+    let frame = document.getElementById("frame");
+    frame.contentWindow.test = function() {
+      frame.contentWindow.requestIdleCallback(t.step_func_done());
+    }
+
+    frame.contentWindow.test();
+  });
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/idle-callbacks/callback-invoked.html b/testing/web-platform/tests/html/webappapis/idle-callbacks/callback-invoked.html
new file mode 100644
index 000000000..5e799cf39
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/idle-callbacks/callback-invoked.html
@@ -0,0 +1,12 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>requestIdleCallback callback must be called eventually</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<div id="log"></div>
+<script>
+  async_test(function (t) {
+    assert_false(document.hidden, "document.hidden must exist and be false to run this test properly");
+    window.requestIdleCallback(t.step_func_done());
+  }, "requestIdleCallback callback is invoked at least once before the timeout");
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/idle-callbacks/callback-multiple-calls.html b/testing/web-platform/tests/html/webappapis/idle-callbacks/callback-multiple-calls.html
new file mode 100644
index 000000000..8584c71da
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/idle-callbacks/callback-multiple-calls.html
@@ -0,0 +1,41 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>multiple calls to requestIdleCallback</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<div id="log"></div>
+<script>
+  async_test(function (t) {
+    assert_false(document.hidden, "document.hidden must exist and be false to run this test properly");
+    var counter = 0;
+    function f(c) {
+      assert_equals(counter, c);
+      if (counter === 99) {
+        t.done();
+      }
+
+      ++counter;
+    }
+    for (var i = 0; i < 100; ++i) {
+      let j = i;
+      window.requestIdleCallback(t.step_func(function () { f(j) }));
+    }
+  }, "requestIdleCallback callbacks should be invoked in order (called iteratively)");
+
+  async_test(function (t) {
+    assert_false(document.hidden, "document.hidden must exist and be false to run this test properly");
+    var counter = 0;
+
+    function f(c) {
+      assert_equals(counter, c);
+      if (counter === 99) {
+        t.done();
+      }
+
+      ++counter;
+      window.requestIdleCallback(t.step_func(function () { f(c + 1) }));
+    }
+
+    window.requestIdleCallback(t.step_func(function () { f(0) }));
+  }, "requestIdleCallback callbacks should be invoked in order (called recursively)");
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/idle-callbacks/callback-timeout.html b/testing/web-platform/tests/html/webappapis/idle-callbacks/callback-timeout.html
new file mode 100644
index 000000000..823d5f5db
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/idle-callbacks/callback-timeout.html
@@ -0,0 +1,28 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>requestIdleCallback timeout callback must be called with didTimeout equal to true</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<div id="log"></div>
+<script>
+  async_test(function (t) {
+    assert_false(document.hidden, "document.hidden must exist and be false to run this test properly");
+    var counter = 0;
+
+    function g(deadline) {
+      assert_true(deadline.didTimeout)
+      t.done();
+    }
+
+    function f(deadline) {
+      assert_false(deadline.didTimeout);
+      window.requestIdleCallback(t.step_func(g), {timeout:300});
+
+      var d = Date.now() + 500;
+      while (Date.now() < d) {
+
+      }
+    }
+    window.requestIdleCallback(t.step_func(f));
+  }, "requestIdleCallback callback should time out");
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/idle-callbacks/cancel-invoked.html b/testing/web-platform/tests/html/webappapis/idle-callbacks/cancel-invoked.html
new file mode 100644
index 000000000..8956b8709
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/idle-callbacks/cancel-invoked.html
@@ -0,0 +1,26 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>cancelling idle requests</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<div id="log"></div>
+<script>
+  test(function (t) {
+    window.cancelIdleCallback(42);
+    assert_true(true);
+  }, "cancelIdleCallback does nothing if there is no callback with the given handle");
+
+  async_test(function (t) {
+    assert_false(document.hidden, "document.hidden must exist and be false to run this test properly");
+    var neverCalled = true;
+    var handle = window.requestIdleCallback(function () {
+      neverCalled = false;
+    });
+    window.cancelIdleCallback(handle);
+
+    t.step_timeout(function() {
+      assert_true(neverCalled);
+      t.done();
+    }, 2000);
+  }, "A cancelled callback is never invoked");
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/idle-callbacks/idlharness.html b/testing/web-platform/tests/html/webappapis/idle-callbacks/idlharness.html
new file mode 100644
index 000000000..6033535f3
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/idle-callbacks/idlharness.html
@@ -0,0 +1,34 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>idlharness test</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src="/resources/WebIDLParser.js"></script>
+<script src="/resources/idlharness.js"></script>
+
+<pre id='untested_idl' style='display:none'>
+[PrimaryGlobal]
+interface Window {
+};
+</pre>
+
+<pre id='idl'>
+partial interface Window {
+  unsigned long requestIdleCallback(IdleRequestCallback callback,
+                                    optional IdleRequestOptions options);
+  void          cancelIdleCallback(unsigned long handle);
+};
+
+dictionary IdleRequestOptions {
+  unsigned long timeout;
+};
+
+callback IdleRequestCallback = void (IdleDeadline deadline);
+</pre>
+<script>
+  var idl_array = new IdlArray();
+  idl_array.add_untested_idls(document.getElementById("untested_idl").textContent);
+  idl_array.add_idls(document.getElementById("idl").textContent);
+  idl_array.add_objects({Window: ["window"]});
+  idl_array.test();
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/.gitkeep b/testing/web-platform/tests/html/webappapis/scripting/.gitkeep
new file mode 100644
index 000000000..e69de29bb
diff --git a/testing/web-platform/tests/html/webappapis/scripting/enabling-and-disabling-scripting/.gitkeep b/testing/web-platform/tests/html/webappapis/scripting/enabling-and-disabling-scripting/.gitkeep
new file mode 100644
index 000000000..e69de29bb
diff --git a/testing/web-platform/tests/html/webappapis/scripting/event-loops/.gitkeep b/testing/web-platform/tests/html/webappapis/scripting/event-loops/.gitkeep
new file mode 100644
index 000000000..e69de29bb
diff --git a/testing/web-platform/tests/html/webappapis/scripting/event-loops/contains.json b/testing/web-platform/tests/html/webappapis/scripting/event-loops/contains.json
new file mode 100644
index 000000000..5d7e5e600
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/event-loops/contains.json
@@ -0,0 +1,14 @@
+[
+    {
+        "id": "definitions-1",
+        "original_id": "definitions-1"
+    },
+    {
+        "id": "processing-model-3",
+        "original_id": "processing-model-3"
+    },
+    {
+        "id": "generic-task-sources",
+        "original_id": "generic-task-sources"
+    }
+]
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/event-loops/microtask_after_raf.html b/testing/web-platform/tests/html/webappapis/scripting/event-loops/microtask_after_raf.html
new file mode 100644
index 000000000..824dbc4b9
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/event-loops/microtask_after_raf.html
@@ -0,0 +1,57 @@
+<!DOCTYPE html>
+<head>
+<link rel=author title="Aleks Totic" href="mailto:atotic@chromium.org">
+<link rel=help href="https://html.spec.whatwg.org/#clean-up-after-running-script">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/common.js"></script>
+</head>
+<body style="height:2000px;">
+<script>
+/*
+promise 1, promise 2 execute immediately after rAF
+promise 1 child executes immediately after promise 2.
+
+Relevant specs:
+
+https://html.spec.whatwg.org/#clean-up-after-running-script
+If the JavaScript execution context stack is now empty, perform a microtask checkpoint.
+
+https://html.spec.whatwg.org/#perform-a-microtask-checkpoint
+"perform a microtask checkpoint" runs in a loop until all microtasks have been delivered.
+*/
+
+var test = async_test("Microtask execute immediately after script");
+
+window.requestAnimationFrame( function() {
+    var events = [];
+
+    Promise.resolve()
+    .then(function() {
+        events.push("promise 1");
+        return Promise.resolve();
+    })
+    .then(function() {
+        test.step(function() {
+            events.push("promise 1 child");
+            assert_array_equals(events, ["promise 1", "promise 2", "promise 1 child"]);
+            test.done();
+        });
+    });
+    Promise.resolve()
+    .then(function() {
+        events.push("promise 2");
+    });
+
+    // Set up events that must be executed after Promise.
+    window.setTimeout(function() {
+        events.push('timeout');
+    }, 0);
+    window.addEventListener('scroll', function() {
+        events.push('scroll');
+    });
+    window.scrollBy(0,10);
+
+});
+</script>
+</body>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/event-loops/microtask_after_script.html b/testing/web-platform/tests/html/webappapis/scripting/event-loops/microtask_after_script.html
new file mode 100644
index 000000000..799a0de60
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/event-loops/microtask_after_script.html
@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<head>
+<link rel=author title="Aleks Totic" href="mailto:atotic@chromium.org">
+<link rel=help href="https://html.spec.whatwg.org/#clean-up-after-running-script">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/common.js"></script>
+</head>
+<body style="height:2000px;">
+<script>
+/*
+promise 1, promise 2 execute immediately after script tag
+promise 1 child executes immediately after promise 2.
+
+Relevant specs:
+
+https://html.spec.whatwg.org/#clean-up-after-running-script
+If the JavaScript execution context stack is now empty, perform a microtask checkpoint.
+
+https://html.spec.whatwg.org/#perform-a-microtask-checkpoint
+"perform a microtask checkpoint" runs in a loop until all microtasks have been delivered.
+*/
+
+var test = async_test("Microtask immediately after script");
+
+var events = [];
+
+Promise.resolve()
+.then(function() {
+    events.push("promise 1");
+    return Promise.resolve();
+})
+.then(function() {
+    test.step(function() {
+        events.push("promise 1 child");
+        assert_array_equals(events, ["promise 1", "promise 2", "promise 1 child"]);
+        test.done();
+    });
+});
+Promise.resolve()
+.then(function() {
+    events.push("promise 2");
+});
+
+// Set up events that must be executed after Promise.
+window.setTimeout(function() {
+    events.push('timeout');
+}, 0);
+window.addEventListener('scroll', function() {
+    events.push('scroll');
+});
+window.scrollBy(0,10);
+
+</script>
+</body>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/event-loops/resources/common.js b/testing/web-platform/tests/html/webappapis/scripting/event-loops/resources/common.js
new file mode 100644
index 000000000..e2279f93d
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/event-loops/resources/common.js
@@ -0,0 +1,20 @@
+// Helper for tests that just want to verify the ordering of a series of events.
+// Usage:
+//   log_test(function(t, log) {
+//      log('first');
+//      log('second');
+//   }, ['first', 'second'], 'Ordinal numbers are ordinal');
+
+function log_test(func, expected, description) {
+    async_test(function(t) {
+        var actual = [];
+        function log(entry) {
+            actual.push(entry);
+            if (expected.length <= actual.length) {
+                assert_array_equals(actual, expected);
+                t.done();
+            }
+        }
+        func(t, t.step_func(log));
+    }, description);
+}
diff --git a/testing/web-platform/tests/html/webappapis/scripting/event-loops/task_microtask_ordering-manual.html b/testing/web-platform/tests/html/webappapis/scripting/event-loops/task_microtask_ordering-manual.html
new file mode 100644
index 000000000..ed2f70e19
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/event-loops/task_microtask_ordering-manual.html
@@ -0,0 +1,64 @@
+<!DOCTYPE html>
+<title>Task and Microtask Ordering </title>
+<link rel=author title="Joshua Bell" href="mailto:jsbell@google.com">
+<link rel=help href="https://html.spec.whatwg.org/multipage/#event-loops">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/common.js"></script>
+<style>
+.inner { padding: 46px; width: 0; margin: 0 auto; background: #d4d4d4; }
+.outer { padding: 25px; width: 92px; background: #f1f1f1; }
+</style>
+
+<p>Click on the inner box:</p>
+<div class="outer">
+  <div class="inner"></div>
+</div>
+
+<script>
+
+// Based on: https://jakearchibald.com/2015/tasks-microtasks-queues-and-schedules/
+
+log_test(function(t, log) {
+    // Let's get hold of those elements
+    var outer = document.querySelector('.outer');
+    var inner = document.querySelector('.inner');
+
+    // Let's listen for attribute changes on the
+    // outer element
+    new MutationObserver(function() {
+        log('mutate');
+    }).observe(outer, {
+        attributes: true
+    });
+
+    // Here's a click listener...
+    function onClick() {
+        log('click');
+
+        setTimeout(function() {
+            log('timeout');
+        }, 0);
+
+        Promise.resolve().then(function() {
+            log('promise');
+        });
+
+        outer.setAttribute('data-random', Math.random());
+    }
+
+    // ...which we'll attach to both elements
+    inner.addEventListener('click', onClick);
+    outer.addEventListener('click', onClick);
+}, [
+    'click',
+    'promise',
+    'mutate',
+    'click',
+    'promise',
+    'mutate',
+    'timeout',
+    'timeout'
+], 'Level 1 bossfight (manual click)');
+
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/event-loops/task_microtask_ordering.html b/testing/web-platform/tests/html/webappapis/scripting/event-loops/task_microtask_ordering.html
new file mode 100644
index 000000000..c14a043b6
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/event-loops/task_microtask_ordering.html
@@ -0,0 +1,85 @@
+<!DOCTYPE html>
+<title>Task and Microtask Ordering </title>
+<link rel=author title="Joshua Bell" href="mailto:jsbell@google.com">
+<link rel=help href="https://html.spec.whatwg.org/multipage/#event-loops">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/common.js"></script>
+
+<div class="outer">
+  <div class="inner"></div>
+</div>
+
+<script>
+
+// Based on: https://jakearchibald.com/2015/tasks-microtasks-queues-and-schedules/
+
+log_test(function(t, log) {
+    log('script start');
+
+    setTimeout(function() {
+        log('setTimeout');
+    }, 0);
+
+    Promise.resolve().then(function() {
+        log('promise1');
+    }).then(function() {
+        log('promise2');
+    });
+
+    log('script end');
+}, [
+    'script start',
+    'script end',
+    'promise1',
+    'promise2',
+    'setTimeout'
+], 'Basic task and microtask ordering');
+
+log_test(function(t, log) {
+    // Let's get hold of those elements
+    var outer = document.querySelector('.outer');
+    var inner = document.querySelector('.inner');
+
+    // Let's listen for attribute changes on the
+    // outer element
+    new MutationObserver(function() {
+        log('mutate');
+    }).observe(outer, {
+        attributes: true
+    });
+
+    // Here's a click listener...
+    function onClick() {
+        log('click');
+
+        setTimeout(function() {
+            log('timeout');
+        }, 0);
+
+        Promise.resolve().then(function() {
+            log('promise');
+        });
+
+        outer.setAttribute('data-random', Math.random());
+    }
+
+    // ...which we'll attach to both elements
+    inner.addEventListener('click', onClick);
+    outer.addEventListener('click', onClick);
+
+    // Note that this will behave differently than a real click,
+    // since the dispatch is synchronous and microtasks will not
+    // run between event bubbling steps.
+    inner.click();
+}, [
+    'click',
+    'click',
+    'promise',
+    'mutate',
+    'promise',
+    'timeout',
+    'timeout'
+], 'Level 1 bossfight (synthetic click)');
+
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/events/.gitkeep b/testing/web-platform/tests/html/webappapis/scripting/events/.gitkeep
new file mode 100644
index 000000000..e69de29bb
diff --git a/testing/web-platform/tests/html/webappapis/scripting/events/body-onload.html b/testing/web-platform/tests/html/webappapis/scripting/events/body-onload.html
new file mode 100644
index 000000000..1e43d1ccd
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/events/body-onload.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<title>HTMLBodyElement.onload</title>
+<link rel="author" title="Boris Zbarsky" href="mailto:bzbarsky@mit.edu">
+<link rel="author" title="Ms2ger" href="mailto:ms2ger@gmail.com">
+<link rel="help" href="https://html.spec.whatwg.org/multipage/#handler-window-onload">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+var t = async_test("body.onload should set the window.onload handler")
+window.onload = t.step_func(function() {
+  assert_unreached("This handler should be overwritten.")
+})
+var b = document.createElement("body")
+b.onload = t.step_func(function(e) {
+  assert_equals(e.currentTarget, window,
+                "The event should be fired at the window.")
+  t.done()
+})
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/events/contains.json b/testing/web-platform/tests/html/webappapis/scripting/events/contains.json
new file mode 100644
index 000000000..65f3062d2
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/events/contains.json
@@ -0,0 +1,18 @@
+[
+    {
+        "id": "event-handler-attributes",
+        "original_id": "event-handler-attributes"
+    },
+    {
+        "id": "event-handlers-on-elements-document-objects-and-window-objects",
+        "original_id": "event-handlers-on-elements,-document-objects,-and-window-objects"
+    },
+    {
+        "id": "event-firing",
+        "original_id": "event-firing"
+    },
+    {
+        "id": "events-and-the-window-object",
+        "original_id": "events-and-the-window-object"
+    }
+]
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/events/event-handler-attributes-body-window.html b/testing/web-platform/tests/html/webappapis/scripting/events/event-handler-attributes-body-window.html
new file mode 100644
index 000000000..1c87892cb
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/events/event-handler-attributes-body-window.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<title>HTMLBodyElement event handlers</title>
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<body>
+<script>
+function f() {
+  return 0;
+}
+
+var handlers = ['blur','error','focus','load','resize','scroll',
+                'afterprint','beforeprint','beforeunload','hashchange',
+                'languagechange','message','offline','online','pagehide',
+                'pageshow','popstate','storage','unload'];
+handlers.forEach(function(handler) {
+  test(function() {
+    document.body['on' + handler] = f;
+    assert_equals(window['on' + handler], f);
+  }, handler);
+});
+
+handlers.forEach(function(handler) {
+    document.body['on' + handler] = null;
+});
+
+handlers.forEach(function(handler) {
+  test(function() {
+    assert_equals(document.body['on' + handler], null);
+    assert_equals(window['on' + handler], null);
+  }, handler + " removal");
+});
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/events/event-handler-javascript.html b/testing/web-platform/tests/html/webappapis/scripting/events/event-handler-javascript.html
new file mode 100644
index 000000000..657a37839
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/events/event-handler-javascript.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<title>Event handler with labels</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body onload="javascript:
+  for (var i = 0; i < 2; ++i) {
+    for (var j = 0; j < 2; ++j) {
+      t.step(function() {
+        assert_equals(i, 0);
+        assert_equals(j, 0);
+      });
+      break javascript;
+    }
+  }
+  t.done();
+">
+<div id="log"></div>
+<script>
+var t = async_test("Event handlers starting with 'javascript:' should treat that as a label.");
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/events/event-handler-onresize.html b/testing/web-platform/tests/html/webappapis/scripting/events/event-handler-onresize.html
new file mode 100644
index 000000000..8686716e1
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/events/event-handler-onresize.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<title>HTMLBodyElement.onresize</title>
+<link rel="author" title="His-Name-Is-Joof" href="mailto:jeffrharrison@gmail.com">
+<link rel="help" href="https://html.spec.whatwg.org/multipage/#handler-window-onresize">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+var t = async_test("body.onresize should set the window.onload handler")
+window.onresize = t.step_func(function() {
+  assert_unreached("This handler should be overwritten.")
+})
+
+var body = document.createElement("body")
+body.onresize = t.step_func(function(e) {
+  assert_equals(e.currentTarget, window,
+                "The event should be fired at the window.")
+  t.done()
+})
+window.dispatchEvent(new Event('resize'));
+
+t = async_test("document.onresize should set the document.onresize handler");
+document.onresize = t.step_func(function(e) {
+    assert_equals(e.currentTarget, document,
+            "The event should be fired at the document")
+    t.done()
+})
+document.dispatchEvent(new Event('resize'));
+
+t = async_test("meta.onresize should set the meta.onresize handler");
+var meta = document.createElement("meta")
+meta.onresize = t.step_func(function(e) {
+    assert_equals(e.currentTarget, meta,
+            "The event should be fired at the <meta> object")
+    t.done()
+})
+meta.dispatchEvent(new Event('resize'));
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/events/event-handler-processing-algorithm.html b/testing/web-platform/tests/html/webappapis/scripting/events/event-handler-processing-algorithm.html
new file mode 100644
index 000000000..f3848b5ad
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/events/event-handler-processing-algorithm.html
@@ -0,0 +1,63 @@
+<!DOCTYPE html>
+<title>Event handlers processing algorithm</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+ <body>
+ <div id="foo" style="width: 100px; height: 100px; background-color: black"></div>
+ <script>
+ async_test(function(t) {
+     var ev = new Event('mouseover', {cancelable: true});
+     document.getElementById("foo").onmouseover = t.step_func(function() { return true });
+     document.getElementById("foo").dispatchEvent(ev);
+     assert_equals(ev.defaultPrevented, true)
+     t.done();
+ }, "mouseover listener returning true cancels event");
+
+ async_test(function(t) {
+     var ev = new Event('mouseover', {cancelable: true});
+     document.getElementById("foo").onmouseover = t.step_func(function() { return false; });
+     document.getElementById("foo").dispatchEvent(ev);
+     assert_equals(ev.defaultPrevented, false);
+     t.done();
+ }, "mouseover listener returning false doesn't cancel event");
+
+ async_test(function(t) {
+     var ev = new Event('beforeunload', {cancelable: true});
+     window.onbeforeunload = t.step_func(function() {return null});
+     window.dispatchEvent(ev);
+     assert_equals(ev.defaultPrevented, true);
+     t.done();
+ }, "beforeunload listener returning null cancels event");
+
+ async_test(function(t) {
+     var ev = new Event('beforeunload', {cancelable: true});
+     window.onbeforeunload = t.step_func(function() {return true});
+     window.dispatchEvent(ev);
+     assert_equals(ev.defaultPrevented, false);
+     t.done();
+ }, "beforeunload listener returning non-null doesn't cancel event");
+
+ async_test(function(t) {
+     var ev = new Event("click", {cancelable: true});
+     document.getElementById("foo").onclick = t.step_func(function() { return false; });
+     document.getElementById("foo").dispatchEvent(ev);
+     assert_equals(ev.defaultPrevented, true);
+     t.done();
+ }, "click listener returning false cancels event");
+
+ async_test(function(t) {
+     var ev = new Event("blur", {cancelable: true});
+     document.getElementById("foo").onblur = t.step_func(function() { return false; });
+     document.getElementById("foo").dispatchEvent(ev);
+     assert_equals(ev.defaultPrevented, true);
+     t.done();
+ }, "blur listener returning false cancels event");
+
+ async_test(function(t) {
+     var ev = new Event("dblclick", {cancelable: true});
+     document.getElementById("foo").ondblclick = t.step_func(function() { return false; });
+     document.getElementById("foo").dispatchEvent(ev);
+     assert_equals(ev.defaultPrevented, true);
+     t.done();
+ }, "dblclick listener returning false cancels event");
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/events/event-handler-spec-example.html b/testing/web-platform/tests/html/webappapis/scripting/events/event-handler-spec-example.html
new file mode 100644
index 000000000..c06806e3c
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/events/event-handler-spec-example.html
@@ -0,0 +1,65 @@
+<!DOCTYPE html>
+<title>Event handler invocation order</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+var objects = [{}, function() {}, new Number(42), new String()];
+var primitives = [42, null, undefined, ""];
+objects.forEach(function(object) {
+  var t = async_test("Event handler listeners should be registered when they " +
+                     "are first set to an object value (" +
+                     format_value(object) + ").");
+  t.step(function() {
+    var i = 0;
+    var uncalled = "t.step(function() { assert_unreached('First event handler.') })"
+    var button = document.createElement('button');
+    button.onclick = object; // event handler listener is registered here
+    button.addEventListener('click', t.step_func(function () { assert_equals(++i, 2) }), false);
+    button.setAttribute('onclick', uncalled);
+    button.addEventListener('click', t.step_func(function () { assert_equals(++i, 3) }), false);
+    button.onclick = t.step_func(function () { assert_equals(++i, 1); });
+    button.addEventListener('click', t.step_func(function () { assert_equals(++i, 4) }), false);
+    button.click()
+    assert_equals(button.getAttribute("onclick"), uncalled)
+    assert_equals(i, 4);
+    t.done()
+  });
+});
+primitives.forEach(function(primitive) {
+  var t = async_test("Event handler listeners should be registered when they " +
+                     "are first set to an object value (" +
+                     format_value(primitive) + ").");
+  t.step(function() {
+    var i = 0;
+    var uncalled = "t.step(function() { assert_unreached('First event handler.') })"
+    var button = document.createElement('button');
+    button.onclick = primitive;
+    button.addEventListener('click', t.step_func(function () { assert_equals(++i, 1) }), false);
+    button.setAttribute('onclick', uncalled); // event handler listener is registered here
+    button.addEventListener('click', t.step_func(function () { assert_equals(++i, 3) }), false);
+    button.onclick = t.step_func(function () { assert_equals(++i, 2); });
+    button.addEventListener('click', t.step_func(function () { assert_equals(++i, 4) }), false);
+    button.click()
+    assert_equals(button.getAttribute("onclick"), uncalled)
+    assert_equals(i, 4);
+    t.done()
+  });
+});
+var t = async_test("Event handler listeners should be registered when they " +
+                   "are first set to an object value.");
+t.step(function() {
+  var i = 0;
+  var uncalled = "t.step(function() { assert_unreached('First event handler.') })"
+  var button = document.createElement('button');
+  button.addEventListener('click', t.step_func(function () { assert_equals(++i, 1) }), false);
+  button.setAttribute('onclick', uncalled); // event handler listener is registered here
+  button.addEventListener('click', t.step_func(function () { assert_equals(++i, 3) }), false);
+  button.onclick = t.step_func(function () { assert_equals(++i, 2); });
+  button.addEventListener('click', t.step_func(function () { assert_equals(++i, 4) }), false);
+  button.click()
+  assert_equals(button.getAttribute("onclick"), uncalled)
+  assert_equals(i, 4);
+  t.done()
+});
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/events/inline-event-handler-ordering.html b/testing/web-platform/tests/html/webappapis/scripting/events/inline-event-handler-ordering.html
new file mode 100644
index 000000000..90e29bfd1
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/events/inline-event-handler-ordering.html
@@ -0,0 +1,52 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>Inline event handlers retain their ordering even when invalid</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+<script>
+var events = [];
+
+test(function() {
+  events = [];
+  var e = document.createElement("div");
+  document.body.appendChild(e);
+  e.addEventListener("click", function() { events.push("ONE") });
+  e.setAttribute("onclick", "window.open(");
+  e.addEventListener("click", function() { events.push("THREE") });
+  // Try to compile the event handler.
+  e.onclick;
+  e.setAttribute("onclick", "events.push('TWO')");
+  e.dispatchEvent(new Event("click"));
+  var expected_events = ["ONE", "TWO", "THREE"];
+  assert_array_equals(events, expected_events);
+}, "Inline event handlers retain their ordering when invalid and force-compiled");
+
+test(function() {
+  events = [];
+  var e = document.createElement("div");
+  document.body.appendChild(e);
+  e.addEventListener("click", function() { events.push("ONE") });
+  e.setAttribute("onclick", "window.open(");
+  e.addEventListener("click", function() { events.push("THREE") });
+  e.dispatchEvent(new Event("click"));
+  e.setAttribute("onclick", "events.push('TWO')");
+  e.dispatchEvent(new Event("click"));
+  var expected_events = ["ONE", "THREE", "ONE", "TWO", "THREE"];
+  assert_array_equals(events, expected_events);
+}, "Inline event handlers retain their ordering when invalid and force-compiled via dispatch");
+
+test(function() {
+  events = [];
+  var e = document.createElement("div");
+  document.body.appendChild(e);
+  e.addEventListener("click", function() { events.push("ONE") });
+  e.setAttribute("onclick", "window.open(");
+  e.addEventListener("click", function() { events.push("THREE") });
+  e.setAttribute("onclick", "events.push('TWO')");
+  e.dispatchEvent(new Event("click"));
+  var expected_events = ["ONE", "TWO", "THREE"];
+  assert_array_equals(events, expected_events);
+}, "Inline event handlers retain their ordering when invalid and lazy-compiled");
+</script>
+</body>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/events/invalid-uncompiled-raw-handler-compiled-late.html b/testing/web-platform/tests/html/webappapis/scripting/events/invalid-uncompiled-raw-handler-compiled-late.html
new file mode 100644
index 000000000..a0e7bbcdd
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/events/invalid-uncompiled-raw-handler-compiled-late.html
@@ -0,0 +1,25 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>Invalid uncompiled raw handlers should only be compiled when about to call them.</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+<script>
+setup({ allow_uncaught_exception: true });
+
+test(function() {
+  var events = [];
+  window.onerror = function() {
+    events.push("Error");
+  };
+
+  var div = document.createElement("div");
+  div.addEventListener("click", function (e) { events.push("click 1") });
+  div.setAttribute("onclick", "}");
+  div.addEventListener("click", function (e) { events.push("click 2") });
+  div.dispatchEvent(new Event("click"));
+  assert_equals(div.onclick, null);
+  assert_array_equals(events, ["click 1", "error", "click 2"]);
+});
+</script>
+</body>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/events/invalid-uncompiled-raw-handler-compiled-once.html b/testing/web-platform/tests/html/webappapis/scripting/events/invalid-uncompiled-raw-handler-compiled-once.html
new file mode 100644
index 000000000..a67f66ead
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/events/invalid-uncompiled-raw-handler-compiled-once.html
@@ -0,0 +1,23 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>Invalid uncompiled raw handlers should only be compiled once.</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+<script>
+setup({ allow_uncaught_exception: true });
+
+var errors = 0;
+window.onerror = function() {
+  errors++;
+};
+
+test(function() {
+  var e = document.body;
+  e.setAttribute("onclick", "window.open(");
+  assert_equals(e.onclick, null);
+  assert_equals(e.onclick, null);
+  assert_equals(errors, 1);
+});
+</script>
+</body>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/events/onerroreventhandler-frame.html b/testing/web-platform/tests/html/webappapis/scripting/events/onerroreventhandler-frame.html
new file mode 100644
index 000000000..79e4af302
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/events/onerroreventhandler-frame.html
@@ -0,0 +1,56 @@
+<body></body>
+<script>
+function check1(args, callee) {
+  parent.t.step(function() {
+    parent.assert_equals(callee.length, 5);
+    parent.assert_equals(args.length, 5);
+    parent.assert_equals(args[0], reference_error.message);
+    parent.assert_equals(args[1], reference_error.filename);
+    parent.assert_equals(args[2], reference_error.lineno);
+    parent.assert_equals(args[3], reference_error.colno);
+    parent.assert_equals(args[4], reference_error.error);
+    parent.t.done();
+  });
+}
+
+var reference_error = new ErrorEvent("error", {
+  filename: "error_file.js",
+  lineno: 333,
+  colno: 999,
+  message: "there was an error",
+  error: {nondefault: 'some unusual object'},
+});
+
+parent.t.step(function() {
+  document.body.outerHTML = "<body onerror='check1(arguments, arguments.callee)'></body>"
+  window.dispatchEvent(reference_error);
+});
+
+function check2(args, callee) {
+  parent.t2.step(function() {
+    parent.assert_equals(callee.length, 5);
+    parent.assert_equals(args.length, 1);
+    parent.assert_false(args[0] instanceof ErrorEvent);
+    parent.t2.done()
+  });
+}
+
+parent.t2.step(function() {
+  document.body.outerHTML = "<body onerror='check2(arguments, arguments.callee)'></body>"
+  window.dispatchEvent(new Event("error"));
+});
+
+function check3(args, callee) {
+  parent.t3.step(function() {
+    parent.assert_equals(args.length, 1);
+    parent.assert_equals(callee.length, 1);
+  });
+}
+
+parent.t3.step(function() {
+  document.body.outerHTML = "<body><span onerror='check3(arguments, arguments.callee)'></span></body>"
+  document.body.firstChild.dispatchEvent(reference_error);
+  document.body.firstChild.dispatchEvent(new Event("error"));
+  parent.t3.done();
+});
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/events/onerroreventhandler.html b/testing/web-platform/tests/html/webappapis/scripting/events/onerroreventhandler.html
new file mode 100644
index 000000000..60fc674d5
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/events/onerroreventhandler.html
@@ -0,0 +1,11 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>OnErrorEventHandler + ErrorEvent is treated differently</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script>
+var t = async_test("onerror + ErrorEvent + Window");
+var t2 = async_test("onerror + !ErrorEvent + Window");
+var t3 = async_test("onerror + Document");
+</script>
+<iframe src="onerroreventhandler-frame.html"></iframe>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/introduction-5/.gitkeep b/testing/web-platform/tests/html/webappapis/scripting/introduction-5/.gitkeep
new file mode 100644
index 000000000..e69de29bb
diff --git a/testing/web-platform/tests/html/webappapis/scripting/javascript-protocol/.gitkeep b/testing/web-platform/tests/html/webappapis/scripting/javascript-protocol/.gitkeep
new file mode 100644
index 000000000..e69de29bb
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/.gitkeep b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/.gitkeep
new file mode 100644
index 000000000..e69de29bb
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/addEventListener.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/addEventListener.html
new file mode 100644
index 000000000..dbb1cdd5a
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/addEventListener.html
@@ -0,0 +1,32 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror - addEventListener</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+  <div id=log></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var ran = false;
+    window.addEventListener('error', t.step_func(function(e){
+        ran = true;
+        assert_true(e.isTrusted, 'isTrusted');
+    }), false);
+  </script>
+  <script>
+    undefined_variable;
+  </script>
+  <script>
+    for (;) {}
+  </script>
+  <script>
+    t.step(function(){
+        assert_true(ran, 'ran');
+        t.done();
+    });
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/body-onerror-compile-error-data-url.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/body-onerror-compile-error-data-url.html
new file mode 100644
index 000000000..66e1dfed4
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/body-onerror-compile-error-data-url.html
@@ -0,0 +1,37 @@
+<!doctype html>
+<html>
+ <head>
+  <title>&lt;body onerror> - compile error in &lt;script src=data:...></title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var t_col = async_test(document.title+' (column)');
+    var ran = false;
+  </script>
+ <body onerror="
+    t.step(function(){
+        ran = true;
+        assert_equals(typeof event, 'string', 'first arg');
+        assert_equals(source, 'data:text/javascript,for(;){}', 'second arg');
+        assert_equals(typeof lineno, 'number', 'third arg');
+    });
+    t_col.step(function() {
+        assert_equals(typeof colno, 'number', 'fourth arg');
+    });
+    ">
+  <div id=log></div>
+  <script src="data:text/javascript,for(;){}"></script>
+  <script>
+    t.step(function(){
+        assert_true(ran, 'ran');
+        t.done();
+    });
+    t_col.step(function(){
+        t_col.done();
+    });
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/body-onerror-compile-error.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/body-onerror-compile-error.html
new file mode 100644
index 000000000..0f65f7399
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/body-onerror-compile-error.html
@@ -0,0 +1,39 @@
+<!doctype html>
+<html>
+ <head>
+  <title>&lt;body onerror> - compile error in &lt;script></title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var t_col = async_test(document.title+' (column)');
+    var ran = false;
+  </script>
+ <body onerror="
+    t.step(function(){
+        ran = true;
+        assert_equals(typeof event, 'string', 'first arg');
+        assert_equals(source, location.href, 'second arg');
+        assert_equals(typeof lineno, 'number', 'third arg');
+    });
+    t_col.step(function() {
+        assert_equals(typeof colno, 'number', 'fourth arg');
+    });
+    ">
+  <div id=log></div>
+  <script>
+    for(;) {}
+  </script>
+  <script>
+    t.step(function(){
+        assert_true(ran, 'ran');
+        t.done();
+    });
+    t_col.step(function(){
+        t_col.done();
+    });
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/body-onerror-runtime-error.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/body-onerror-runtime-error.html
new file mode 100644
index 000000000..faaddd9ed
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/body-onerror-runtime-error.html
@@ -0,0 +1,39 @@
+<!doctype html>
+<html>
+ <head>
+  <title>&lt;body onerror> - runtime error in &lt;script></title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var t_col = async_test(document.title+' (column)');
+    var ran = false;
+  </script>
+ <body onerror="
+    t.step(function(){
+        ran = true;
+        assert_equals(typeof event, 'string', 'first arg');
+        assert_equals(source, location.href, 'second arg');
+        assert_equals(typeof lineno, 'number', 'third arg');
+    });
+    t_col.step(function(){
+        assert_equals(typeof colno, 'number', 'fourth arg');
+    });
+    ">
+  <div id=log></div>
+  <script>
+    undefined_variable;
+  </script>
+  <script>
+    t.step(function(){
+        assert_true(ran, 'ran');
+        t.done();
+    });
+    t_col.step(function(){
+        t_col.done();
+    });
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-cross-origin-setInterval.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-cross-origin-setInterval.html
new file mode 100644
index 000000000..14e9a8bc2
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-cross-origin-setInterval.html
@@ -0,0 +1,34 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror - compile error in cross-origin setInterval</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+  <div id=log></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var t_col = async_test(document.title+' (column)');
+    var ran = false;
+    var col_value;
+    var interval;
+    window.onerror = t.step_func(function(a, b, c, d){
+        clearInterval(interval);
+        ran = true;
+        col_value = d;
+        assert_equals(a, 'Script error.', 'first arg');
+        assert_equals(b, '', 'second arg');
+        assert_equals(c, 0, 'third arg');
+    });
+    function col_check() {
+        assert_equals(col_value, 0, 'fourth arg');
+        t_col.done();
+    }
+    var script = document.createElement('script');
+    script.src = location.href.replace('://', '://www1.').replace(/\/[^\/]+$/, '/support/syntax-error-in-setInterval.js');
+    document.body.appendChild(script);
+  </script>
+ </body>
+</html>
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-cross-origin-setTimeout.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-cross-origin-setTimeout.html
new file mode 100644
index 000000000..ba3be9d0a
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-cross-origin-setTimeout.html
@@ -0,0 +1,32 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror - compile error in cross-origin setTimeout</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+  <div id=log></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var t_col = async_test(document.title+' (column)');
+    var ran = false;
+    var col_value;
+    window.onerror = t.step_func(function(a, b, c, d){
+        ran = true;
+        col_value = d;
+        assert_equals(a, 'Script error.', 'first arg');
+        assert_equals(b, '', 'second arg');
+        assert_equals(c, 0, 'third arg');
+    });
+    function col_check() {
+        assert_equals(col_value, 0, 'fourth arg');
+        t_col.done();
+    }
+    var script = document.createElement('script');
+    script.src = location.href.replace('://', '://www1.').replace(/\/[^\/]+$/, '/support/syntax-error-in-setTimeout.js');
+    document.body.appendChild(script);
+  </script>
+ </body>
+</html>
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-cross-origin.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-cross-origin.html
new file mode 100644
index 000000000..b7e989529
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-cross-origin.html
@@ -0,0 +1,38 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror - compile error in &lt;script src=//www1...></title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+  <div id=log></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var t_col = async_test(document.title+' (column)');
+    var ran = false;
+    var col_value;
+    window.onerror = t.step_func(function(a, b, c, d){
+        ran = true;
+        col_value = d;
+        assert_equals(a, 'Script error.', 'first arg');
+        assert_equals(b, '', 'second arg');
+        assert_equals(c, 0, 'third arg');
+    });
+    var script = document.createElement('script');
+    script.src = location.href.replace('://', '://www1.').replace(/\/[^\/]+$/, '/support/syntax-error.js');
+    document.body.appendChild(script);
+    onload = function(){
+        t.step(function(){
+            assert_true(ran, 'ran');
+            t.done();
+        });
+        t_col.step(function(){
+            assert_equals(col_value, 0, 'fourth arg');
+            t_col.done();
+        });
+    };
+  </script>
+ </body>
+</html>
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-data-url.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-data-url.html
new file mode 100644
index 000000000..08ce2f348
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-data-url.html
@@ -0,0 +1,36 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror - compile error in &lt;script src=data:...></title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+  <div id=log></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var t_col = async_test(document.title+' (column)');
+    var ran = false;
+    var col_value;
+    window.onerror = t.step_func(function(a, b, c, d){
+        ran = true;
+        col_value = d;
+        assert_equals(typeof a, 'string', 'first arg');
+        assert_equals(b, 'data:text/javascript,for(;){}', 'second arg');
+        assert_equals(typeof c, 'number', 'third arg');
+    });
+  </script>
+  <script src="data:text/javascript,for(;){}"></script>
+  <script>
+    t.step(function(){
+        assert_true(ran, 'ran');
+        t.done();
+    });
+    t_col.step(function(){
+        assert_equals(typeof col_value, 'number', 'fourth arg');
+        t_col.done();
+    });
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-in-attribute.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-in-attribute.html
new file mode 100644
index 000000000..864d09fc1
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-in-attribute.html
@@ -0,0 +1,39 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror - compile error in attribute</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+  <div id=log></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var t_col = async_test(document.title+' (column)');
+    var ran = false;
+    var col_value;
+    window.onerror = t.step_func(function(a, b, c, d){
+        ran = true;
+        col_value = d;
+        assert_equals(typeof a, 'string', 'first arg');
+        assert_equals(b, location.href, 'second arg');
+        assert_equals(typeof c, 'number', 'third arg');
+    });
+  </script>
+  <p onclick="{"></p>
+  <script>
+    t.step(function(){
+        var ev = document.createEvent('Event');
+        ev.initEvent('click', false, false);
+        document.querySelector('p').dispatchEvent(ev);
+        assert_true(ran, 'ran');
+        t.done();
+    });
+    t_col.step(function(){
+        assert_equals(typeof col_value, 'number', 'fourth arg');
+        t_col.done();
+    });
+  </script>
+ </body>
+</html>
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-in-body-onerror.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-in-body-onerror.html
new file mode 100644
index 000000000..0b094e71c
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-in-body-onerror.html
@@ -0,0 +1,28 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror - compile error in &lt;body onerror></title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var ran = false;
+    window.onerror = t.step_func(function(){
+        ran = true;
+    });
+  </script>
+ </head>
+ <body onerror="{"><!-- sets the event handler to null before compiling -->
+  <div id=log></div>
+  <script>
+   for(;) {}
+  </script>
+  <script>
+    t.step(function(){
+        assert_false(ran, 'ran');
+        t.done();
+    });
+  </script>
+ </body>
+</html>
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-in-setInterval.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-in-setInterval.html
new file mode 100644
index 000000000..39a01335c
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-in-setInterval.html
@@ -0,0 +1,39 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror - compile error in setInterval</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+  <div id=log></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var t_col = async_test(document.title+' (column)');
+    var ran = false;
+    var col_value;
+    var interval;
+    window.onerror = t.step_func(function(a, b, c, d){
+        clearInterval(interval);
+        ran = true;
+        col_value = d;
+        assert_equals(typeof a, 'string', 'first arg');
+        assert_equals(b, location.href, 'second arg');
+        assert_equals(typeof c, 'number', 'third arg');
+    });
+    interval = setInterval("{", 10);
+    setTimeout(function(){
+        t.step(function(){
+            clearInterval(interval);
+            assert_true(ran, 'ran');
+            t.done();
+        });
+        t_col.step(function(){
+            assert_equals(typeof col_value, 'number', 'fourth arg');
+            t_col.done();
+        });
+    }, 20);
+  </script>
+ </body>
+</html>
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-in-setTimeout.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-in-setTimeout.html
new file mode 100644
index 000000000..879660313
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-in-setTimeout.html
@@ -0,0 +1,36 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror - compile error in setTimeout</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+  <div id=log></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var t_col = async_test(document.title+' (column)');
+    var ran = false;
+    var col_value;
+    window.onerror = t.step_func(function(a, b, c, d){
+        ran = true;
+        col_value = d;
+        assert_equals(typeof a, 'string', 'first arg');
+        assert_equals(b, location.href, 'second arg');
+        assert_equals(typeof c, 'number', 'third arg');
+    });
+    setTimeout("{", 10);
+    setTimeout(function(){
+        t.step(function(){
+            assert_true(ran, 'ran');
+            t.done();
+        });
+        t_col.step(function(){
+            assert_equals(typeof col_value, 'number', 'fourth arg');
+            t_col.done();
+        });
+    }, 20);
+  </script>
+ </body>
+</html>
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-same-origin.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-same-origin.html
new file mode 100644
index 000000000..71c28b584
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error-same-origin.html
@@ -0,0 +1,36 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror - compile error in &lt;script src=...></title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+  <div id=log></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var t_col = async_test(document.title+' (column)');
+    var ran = false;
+    var col_value;
+    window.onerror = t.step_func(function(a, b, c, d){
+        ran = true;
+        col_value = d;
+        assert_equals(typeof a, 'string', 'first arg');
+        assert_equals(b, document.querySelector('script[src="support/syntax-error.js"]').src, 'second arg');
+        assert_equals(typeof c, 'number', 'third arg');
+    });
+  </script>
+  <script src="support/syntax-error.js"></script>
+  <script>
+    t.step(function(){
+        assert_true(ran, 'ran');
+        t.done();
+    });
+    t_col.step(function(){
+        assert_equals(typeof col_value, 'number', 'fourth arg');
+        t_col.done();
+    });
+  </script>
+ </body>
+</html>
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error.html
new file mode 100644
index 000000000..a4bdfd9c4
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/compile-error.html
@@ -0,0 +1,38 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror - compile error in &lt;script></title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+  <div id=log></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var t_col = async_test(document.title+' (column)');
+    var ran = false;
+    var col_value;
+    window.onerror = t.step_func(function(a, b, c, d){
+        ran = true;
+        col_value = d;
+        assert_equals(typeof a, 'string', 'first arg');
+        assert_equals(b, location.href, 'second arg');
+        assert_equals(typeof c, 'number', 'third arg');
+    });
+  </script>
+  <script>
+    for(;) {}
+  </script>
+  <script>
+    t.step(function(){
+        assert_true(ran, 'ran');
+        t.done();
+    });
+    t_col.step(function(){
+        assert_equals(typeof col_value, 'number', 'fourth arg');
+        t_col.done();
+    });
+  </script>
+ </body>
+</html>
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/contains.json b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/contains.json
new file mode 100644
index 000000000..b49029277
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/contains.json
@@ -0,0 +1,28 @@
+[
+    {
+        "id": "definitions-0",
+        "original_id": "definitions-0"
+    },
+    {
+        "id": "calling-scripts",
+        "original_id": "calling-scripts"
+    },
+    {
+        "id": "creating-scripts",
+        "original_id": "creating-scripts"
+    },
+    {
+        "id": "killing-scripts",
+        "original_id": "killing-scripts"
+    },
+    {
+        "id": "runtime-script-errors",
+        "original_id": "runtime-script-errors",
+        "children": [
+            {
+                "id": "runtime-script-errors-in-documents",
+                "original_id": "runtime-script-errors-in-documents"
+            }
+        ]
+    }
+]
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-cross-origin-setInterval.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-cross-origin-setInterval.html
new file mode 100644
index 000000000..dd97566d7
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-cross-origin-setInterval.html
@@ -0,0 +1,34 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror - runtime error in cross-origin setInterval</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+  <div id=log></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var t_col = async_test(document.title+' (column)');
+    var ran = false;
+    var col_value;
+    var interval;
+    window.onerror = t.step_func(function(a, b, c, d){
+        clearInterval(interval);
+        ran = true;
+        col_value = d;
+        assert_equals(a, 'Script error.', 'first arg');
+        assert_equals(b, '', 'second arg');
+        assert_equals(c, 0, 'third arg');
+    });
+    function col_check() {
+        assert_equals(col_value, 0, 'fourth arg');
+        t_col.done();
+    }
+    var script = document.createElement('script');
+    script.src = location.href.replace('://', '://www1.').replace(/\/[^\/]+$/, '/support/undefined-variable-in-setInterval.js');
+    document.body.appendChild(script);
+  </script>
+ </body>
+</html>
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-cross-origin-setTimeout.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-cross-origin-setTimeout.html
new file mode 100644
index 000000000..20ee21c61
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-cross-origin-setTimeout.html
@@ -0,0 +1,32 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror - runtime error in cross-origin setTimeout</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+  <div id=log></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var t_col = async_test(document.title+' (column)');
+    var ran = false;
+    var col_value;
+    window.onerror = t.step_func(function(a, b, c, d){
+        ran = true;
+        col_value = d;
+        assert_equals(a, 'Script error.', 'first arg');
+        assert_equals(b, '', 'second arg');
+        assert_equals(c, 0, 'third arg');
+    });
+    function col_check() {
+        assert_equals(col_value, 0, 'fourth arg');
+        t_col.done();
+    }
+    var script = document.createElement('script');
+    script.src = location.href.replace('://', '://www1.').replace(/\/[^\/]+$/, '/support/undefined-variable-in-setTimeout.js');
+    document.body.appendChild(script);
+  </script>
+ </body>
+</html>
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-cross-origin.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-cross-origin.html
new file mode 100644
index 000000000..d63aaa6d3
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-cross-origin.html
@@ -0,0 +1,38 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror - runtime error in &lt;script src=//www1...></title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+  <div id=log></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var t_col = async_test(document.title+' (column)');
+    var ran = false;
+    var col_value;
+    window.onerror = t.step_func(function(a, b, c, d){
+        ran = true;
+        col_value = d;
+        assert_equals(a, 'Script error.', 'first arg');
+        assert_equals(b, '', 'second arg');
+        assert_equals(c, 0, 'third arg');
+    });
+    var script = document.createElement('script');
+    script.src = location.href.replace('://', '://www1.').replace(/\/[^\/]+$/, '/support/undefined-variable.js');
+    document.body.appendChild(script);
+    onload = function(){
+        t.step(function(){
+            assert_true(ran, 'ran');
+            t.done();
+        });
+        t_col.step(function(){
+            assert_equals(col_value, 0, 'fourth arg');
+            t_col.done();
+        });
+    };
+  </script>
+ </body>
+</html>
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-data-url.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-data-url.html
new file mode 100644
index 000000000..485ce90aa
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-data-url.html
@@ -0,0 +1,36 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror - runtime error in &lt;script src=data:...></title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+  <div id=log></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var t_col = async_test(document.title+' (column)');
+    var ran = false;
+    var col_value;
+    window.onerror = t.step_func(function(a, b, c, d){
+        ran = true;
+        col_value = d;
+        assert_equals(typeof a, 'string', 'first arg');
+        assert_equals(b, 'data:text/javascript,undefined_variable;', 'second arg');
+        assert_equals(typeof c, 'number', 'third arg');
+    });
+  </script>
+  <script src="data:text/javascript,undefined_variable;"></script>
+  <script>
+    t.step(function(){
+        assert_true(ran, 'ran');
+        t.done();
+    });
+    t_col.step(function(){
+        assert_equals(typeof col_value, 'number', 'fourth arg');
+        t_col.done();
+    });
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-in-attribute.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-in-attribute.html
new file mode 100644
index 000000000..b4f69da7a
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-in-attribute.html
@@ -0,0 +1,39 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror - runtime error in attribute</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+  <div id=log></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var t_col = async_test(document.title+' (column)');
+    var ran = false;
+    var col_value;
+    window.onerror = t.step_func(function(a, b, c, d){
+        ran = true;
+        col_value = d;
+        assert_equals(typeof a, 'string', 'first arg');
+        assert_equals(b, location.href, 'second arg');
+        assert_equals(typeof c, 'number', 'third arg');
+    });
+  </script>
+  <p onclick="undefined_variable;"></p>
+  <script>
+    t.step(function(){
+        var ev = document.createEvent('Event');
+        ev.initEvent('click', false, false);
+        document.querySelector('p').dispatchEvent(ev);
+        assert_true(ran, 'ran');
+        t.done();
+    });
+    t_col.step(function(){
+        assert_equals(typeof col_value, 'number', 'fourth arg');
+        t_col.done();
+    });
+  </script>
+ </body>
+</html>
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-in-body-onerror.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-in-body-onerror.html
new file mode 100644
index 000000000..e0fd1dcbd
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-in-body-onerror.html
@@ -0,0 +1,25 @@
+<!doctype html>
+<html>
+ <head>
+  <title>runtime error in &lt;body onerror></title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var ran = 0;
+  </script>
+ </head>
+ <body onerror="ran++; undefined_variable_in_onerror;">
+  <div id=log></div>
+  <script>
+    undefined_variable;
+  </script>
+  <script>
+    t.step(function(){
+        assert_equals(ran, 1, 'ran');
+        t.done();
+    });
+  </script>
+ </body>
+</html>
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-in-setInterval.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-in-setInterval.html
new file mode 100644
index 000000000..fcfb6c597
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-in-setInterval.html
@@ -0,0 +1,39 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror - runtime error in setInterval</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+  <div id=log></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var t_col = async_test(document.title+' (column)');
+    var ran = false;
+    var col_value;
+    var interval;
+    window.onerror = t.step_func(function(a, b, c, d){
+        clearInterval(interval);
+        ran = true;
+        col_value = d;
+        assert_equals(typeof a, 'string', 'first arg');
+        assert_equals(b, location.href, 'second arg');
+        assert_equals(typeof c, 'number', 'third arg');
+    });
+    interval = setInterval("undefined_variable;", 10);
+    setTimeout(function(){
+        clearInterval(interval);
+        t.step(function(){
+            assert_true(ran, 'ran');
+            t.done();
+        });
+        t_col.step(function(){
+            assert_equals(typeof col_value, 'number', 'fourth arg');
+            t_col.done();
+        });
+    }, 20);
+  </script>
+ </body>
+</html>
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-in-setTimeout.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-in-setTimeout.html
new file mode 100644
index 000000000..c0c69ad7c
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-in-setTimeout.html
@@ -0,0 +1,36 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror - runtime error in setTimeout</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+  <div id=log></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var t_col = async_test(document.title+' (column)');
+    var ran = false;
+    var col_value;
+    window.onerror = t.step_func(function(a, b, c, d){
+        ran = true;
+        col_value = d;
+        assert_equals(typeof a, 'string', 'first arg');
+        assert_equals(b, location.href, 'second arg');
+        assert_equals(typeof c, 'number', 'third arg');
+    });
+    setTimeout("undefined_variable;", 10);
+    setTimeout(function(){
+        t.step(function(){
+            assert_true(ran, 'ran');
+            t.done();
+        });
+        t_col.step(function(){
+            assert_equals(typeof col_value, 'number', 'fourth arg');
+            t_col.done();
+        });
+    }, 20);
+  </script>
+ </body>
+</html>
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-in-window-onerror.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-in-window-onerror.html
new file mode 100644
index 000000000..150a793b7
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-in-window-onerror.html
@@ -0,0 +1,29 @@
+<!doctype html>
+<html>
+ <head>
+  <title>runtime error in window.onerror</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+ <div id=log></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var ran = 0;
+    window.onerror = function(){
+        ran++;
+        undefined_variable_in_onerror;
+    };
+  </script>
+  <script>
+    undefined_variable;
+  </script>
+  <script>
+    t.step(function(){
+        assert_equals(ran, 1, 'ran');
+        t.done();
+    });
+  </script>
+ </body>
+</html>
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-same-origin.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-same-origin.html
new file mode 100644
index 000000000..8f3cfb70b
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error-same-origin.html
@@ -0,0 +1,36 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror - runtime error in &lt;script src=...></title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+  <div id=log></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var t_col = async_test(document.title+' (column)');
+    var ran = false;
+    var col_value;
+    window.onerror = t.step_func(function(a, b, c, d){
+        ran = true;
+        col_value = d;
+        assert_equals(typeof a, 'string', 'first arg');
+        assert_equals(b, document.querySelector('script[src="support/undefined-variable.js"]').src, 'second arg');
+        assert_equals(typeof c, 'number', 'third arg');
+    });
+  </script>
+  <script src="support/undefined-variable.js"></script>
+  <script>
+    t.step(function(){
+        assert_true(ran, 'ran');
+        t.done();
+    });
+    t_col.step(function(){
+        assert_equals(typeof col_value, 'number', 'fourth arg');
+        t_col.done();
+    });
+  </script>
+ </body>
+</html>
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error.html
new file mode 100644
index 000000000..7907494aa
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/runtime-error.html
@@ -0,0 +1,38 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror - runtime error in &lt;script></title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+  <div id=log></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var t = async_test();
+    var t_col = async_test(document.title+' (column)');
+    var ran = false;
+    var col_value;
+    window.onerror = t.step_func(function(a, b, c, d){
+        ran = true;
+        col_value = d;
+        assert_equals(typeof a, 'string', 'first arg');
+        assert_equals(b, location.href, 'second arg');
+        assert_equals(typeof c, 'number', 'third arg');
+    });
+  </script>
+  <script>
+    undefined_variable;
+  </script>
+  <script>
+    t.step(function(){
+        assert_true(ran, 'ran');
+        t.done();
+    });
+    t_col.step(function(){
+        assert_equals(typeof col_value, 'number', 'fourth arg');
+        t_col.done();
+    });
+  </script>
+ </body>
+</html>
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/syntax-error-in-setInterval.js b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/syntax-error-in-setInterval.js
new file mode 100644
index 000000000..812c0daea
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/syntax-error-in-setInterval.js
@@ -0,0 +1,9 @@
+interval = setInterval('{', 10);
+setTimeout(function(){
+    clearInterval(interval);
+    t.step(function(){
+        assert_true(ran, 'ran');
+        t.done();
+    });
+    t_col.step(col_check);
+}, 20);
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/syntax-error-in-setTimeout.js b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/syntax-error-in-setTimeout.js
new file mode 100644
index 000000000..84eb4fc41
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/syntax-error-in-setTimeout.js
@@ -0,0 +1,8 @@
+setTimeout('{', 10);
+setTimeout(function(){
+    t.step(function(){
+        assert_true(ran, 'ran');
+        t.done();
+    });
+    t_col.step(col_check);
+}, 20);
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/syntax-error.js b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/syntax-error.js
new file mode 100644
index 000000000..0f74a6fca
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/syntax-error.js
@@ -0,0 +1 @@
+for (;) {}
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/undefined-variable-in-setInterval.js b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/undefined-variable-in-setInterval.js
new file mode 100644
index 000000000..2950fdb51
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/undefined-variable-in-setInterval.js
@@ -0,0 +1,9 @@
+interval = setInterval('undefined_variable;', 10);
+setTimeout(function(){
+    clearInterval(interval);
+    t.step(function(){
+        assert_true(ran, 'ran');
+        t.done();
+    });
+    t_col.step(col_check);
+}, 20);
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/undefined-variable-in-setTimeout.js b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/undefined-variable-in-setTimeout.js
new file mode 100644
index 000000000..6350ab62e
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/undefined-variable-in-setTimeout.js
@@ -0,0 +1,8 @@
+setTimeout('undefined_variable;', 10);
+setTimeout(function(){
+    t.step(function(){
+        assert_true(ran, 'ran');
+        t.done();
+    });
+    t_col.step(col_check);
+}, 20);
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/undefined-variable.js b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/undefined-variable.js
new file mode 100644
index 000000000..e73a62ced
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/support/undefined-variable.js
@@ -0,0 +1 @@
+undefined_variable;
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-parse-error.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-parse-error.html
new file mode 100644
index 000000000..3c21df49c
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-parse-error.html
@@ -0,0 +1,40 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror: parse errors</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+  <!--
+
+    In https://html.spec.whatwg.org/multipage/#creating-scripts ,
+    step 3 describes parsing the script, and step 5 says:
+      # Otherwise, report the error using the onerror event handler of
+      # the script's global object. If the error is still not handled
+      # after this, then the error may be reported to the user.
+    which links to
+    https://html.spec.whatwg.org/multipage/#report-the-error ,
+    which describes what to do when onerror is a Function.
+
+    -->
+ </head>
+ <body>
+
+  <div id="log"></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var error_count = 0;
+    window.onerror = function(msg, url, lineno) {
+      ++error_count;
+      test(function() {assert_equals(url, window.location.href)},
+           "correct url passed to window.onerror");
+      test(function() {assert_equals(lineno, 34)},
+           "correct line number passed to window.onerror");
+    };
+  </script>
+  <script>This script does not parse correctly.</script>
+  <script>
+  test(function() {assert_equals(error_count, 1)},
+       "correct number of calls to window.onerror");
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-runtime-error-throw.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-runtime-error-throw.html
new file mode 100644
index 000000000..5d2ef0d29
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-runtime-error-throw.html
@@ -0,0 +1,39 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror: runtime scripterrors</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+  <!--
+
+    https://html.spec.whatwg.org/multipage/#runtime-script-errors
+    says what to do for uncaught runtime script errors, and just below
+    describes what to do when onerror is a Function.
+
+    -->
+ </head>
+ <body>
+
+  <div id="log"></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var error_count = 0;
+    window.onerror = function(msg, url, lineno) {
+      ++error_count;
+    };
+  </script>
+  <script>
+  try {
+    // This error is caught, so it should NOT trigger onerror.
+    throw "foo";
+  } catch (ex) {
+  }
+  // This error is NOT caught, so it should trigger onerror.
+  throw "bar";
+  </script>
+  <script>
+  test(function() {assert_equals(error_count, 1)},
+       "correct number of calls to window.onerror");
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-runtime-error.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-runtime-error.html
new file mode 100644
index 000000000..1fdab521a
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-runtime-error.html
@@ -0,0 +1,43 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror: runtime scripterrors</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+  <!--
+
+    https://html.spec.whatwg.org/multipage/#runtime-script-errors
+    says what to do for uncaught runtime script errors, and just below
+    describes what to do when onerror is a Function.
+
+    -->
+ </head>
+ <body>
+
+  <div id="log"></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var error_count = 0;
+    window.onerror = function(msg, url, lineno) {
+      ++error_count;
+      test(function() {assert_equals(url, window.location.href)},
+           "correct url passed to window.onerror");
+      test(function() {assert_equals(lineno, 36)},
+           "correct line number passed to window.onerror");
+    };
+  </script>
+  <script>
+  try {
+    // This error is caught, so it should NOT trigger onerror.
+    window.nonexistentproperty.oops();
+  } catch (ex) {
+  }
+  // This error is NOT caught, so it should trigger onerror.
+  window.nonexistentproperty.oops();
+  </script>
+  <script>
+  test(function() {assert_equals(error_count, 1)},
+       "correct number of calls to window.onerror");
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-with-cross-frame-event-listeners-1.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-with-cross-frame-event-listeners-1.html
new file mode 100644
index 000000000..65a1a02b1
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-with-cross-frame-event-listeners-1.html
@@ -0,0 +1,33 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>
+  When a listener from window A is added to an event target in window B via the
+  addEventListener function from window B, errors in that listener should be
+  reported to window A.
+</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<iframe></iframe>
+<iframe></iframe>
+<script>
+test(function() {
+  var f = new frames[0].Function("thereIsNoSuchCallable()");
+  frames[1].document.addEventListener("myevent", f);
+  var frame0ErrorFired = false;
+  var frame1ErrorFired = false;
+  var ourErrorFired = false;
+  frames[0].addEventListener("error", function() {
+    frame0ErrorFired = true;
+  });
+  frames[1].addEventListener("error", function() {
+    frame1ErrorFired = true;
+  });
+  addEventListener("error", function() {
+    ourErrorFired = true;
+  });
+  frames[1].document.dispatchEvent(new Event("myevent"));
+  assert_true(frame0ErrorFired);
+  assert_false(frame1ErrorFired);
+  assert_false(ourErrorFired);
+}, "The error event from an event listener should fire on that listener's global");
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-with-cross-frame-event-listeners-2.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-with-cross-frame-event-listeners-2.html
new file mode 100644
index 000000000..6c5476542
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-with-cross-frame-event-listeners-2.html
@@ -0,0 +1,33 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>
+  When a listener from window A is added to an event target in window B via the
+  addEventListener function from window A, errors in that listener should be
+  reported to window A.
+</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<iframe></iframe>
+<iframe></iframe>
+<script>
+test(function() {
+  var f = new frames[0].Function("thereIsNoSuchCallable()");
+  frames[0].document.addEventListener.call(frames[1].document, "myevent", f);
+  var frame0ErrorFired = false;
+  var frame1ErrorFired = false;
+  var ourErrorFired = false;
+  frames[0].addEventListener("error", function() {
+    frame0ErrorFired = true;
+  });
+  frames[1].addEventListener("error", function() {
+    frame1ErrorFired = true;
+  });
+  addEventListener("error", function() {
+    ourErrorFired = true;
+  });
+  frames[1].document.dispatchEvent(new Event("myevent"));
+  assert_true(frame0ErrorFired);
+  assert_false(frame1ErrorFired);
+  assert_false(ourErrorFired);
+}, "The error event from an event listener should fire on that listener's global");
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-with-cross-frame-event-listeners-3.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-with-cross-frame-event-listeners-3.html
new file mode 100644
index 000000000..5e78baa8d
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-with-cross-frame-event-listeners-3.html
@@ -0,0 +1,33 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>
+  When a listener from window A is added to an event target in window A via the
+  addEventListener function from window A, errors in that listener should be
+  reported to window A.
+</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<iframe></iframe>
+<iframe></iframe>
+<script>
+test(function() {
+  var f = new frames[1].Function("thereIsNoSuchCallable()");
+  frames[1].document.addEventListener("myevent", f);
+  var frame0ErrorFired = false;
+  var frame1ErrorFired = false;
+  var ourErrorFired = false;
+  frames[0].addEventListener("error", function() {
+    frame0ErrorFired = true;
+  });
+  frames[1].addEventListener("error", function() {
+    frame1ErrorFired = true;
+  });
+  addEventListener("error", function() {
+    ourErrorFired = true;
+  });
+  frames[1].document.dispatchEvent(new Event("myevent"));
+  assert_false(frame0ErrorFired);
+  assert_true(frame1ErrorFired);
+  assert_false(ourErrorFired);
+}, "The error event from an event listener should fire on that listener's global");
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-with-cross-frame-event-listeners-4.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-with-cross-frame-event-listeners-4.html
new file mode 100644
index 000000000..a5f35d613
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-with-cross-frame-event-listeners-4.html
@@ -0,0 +1,33 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>
+  When a listener from window A is added to an event target in window A via the
+  addEventListener function from window B, errors in that listener should be
+  reported to window A.
+</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<iframe></iframe>
+<iframe></iframe>
+<script>
+test(function() {
+  var f = new frames[1].Function("thereIsNoSuchCallable()");
+  frames[0].document.addEventListener.call(frames[1].document, "myevent", f);
+  var frame0ErrorFired = false;
+  var frame1ErrorFired = false;
+  var ourErrorFired = false;
+  frames[0].addEventListener("error", function() {
+    frame0ErrorFired = true;
+  });
+  frames[1].addEventListener("error", function() {
+    frame1ErrorFired = true;
+  });
+  addEventListener("error", function() {
+    ourErrorFired = true;
+  });
+  frames[1].document.dispatchEvent(new Event("myevent"));
+  assert_false(frame0ErrorFired);
+  assert_true(frame1ErrorFired);
+  assert_false(ourErrorFired);
+}, "The error event from an event listener should fire on that listener's global");
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/.gitkeep b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/.gitkeep
new file mode 100644
index 000000000..e69de29bb
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-external-interface/.gitkeep b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-external-interface/.gitkeep
new file mode 100644
index 000000000..e69de29bb
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/.gitkeep b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/.gitkeep
new file mode 100644
index 000000000..e69de29bb
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/NavigatorID.html b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/NavigatorID.html
new file mode 100644
index 000000000..1956a202c
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/NavigatorID.html
@@ -0,0 +1,10 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>NavigatorID</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src=NavigatorID.js></script>
+<div id="log"></div>
+<script>
+run_test();
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/NavigatorID.js b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/NavigatorID.js
new file mode 100644
index 000000000..cf16c68d4
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/NavigatorID.js
@@ -0,0 +1,63 @@
+function run_test() {
+  test(function() {
+    assert_equals(navigator.appCodeName, "Mozilla");
+  }, "appCodeName");
+
+  test(function() {
+    assert_equals(typeof navigator.appName, "string",
+                  "navigator.appName should be a string");
+  }, "appName");
+
+  test(function() {
+    assert_equals(typeof navigator.appVersion, "string",
+                  "navigator.appVersion should be a string");
+  }, "appVersion");
+
+  test(function() {
+    assert_equals(typeof navigator.platform, "string",
+                  "navigator.platform should be a string");
+  }, "platform");
+
+  test(function() {
+    assert_equals(navigator.product, "Gecko");
+  }, "product");
+
+  test(function() {
+    // See https://www.w3.org/Bugs/Public/show_bug.cgi?id=22555
+    if ("window" in self) {
+      // If you identify as WebKit, taintEnabled should not exist.
+      if (navigator.userAgent.indexOf("WebKit") != -1) {
+        assert_false("taintEnabled" in navigator);
+      }
+      // Otherwise it should exist and return false.
+      else {
+        assert_false(navigator.taintEnabled());
+      }
+    } else {
+      // taintEnabled should not exist in workers.
+      assert_false("taintEnabled" in navigator);
+    }
+  }, "taintEnabled");
+
+  test(function() {
+    assert_equals(typeof navigator.userAgent, "string",
+                  "navigator.userAgent should be a string");
+  }, "userAgent type");
+
+  test(function() {
+    assert_equals(navigator.vendorSub, "");
+  }, "vendorSub");
+
+  async_test(function() {
+    var request = new XMLHttpRequest();
+    request.onload = this.step_func_done(function() {
+      assert_equals("user-agent: " + navigator.userAgent + "\n",
+                    request.response,
+                    "userAgent should return the value sent in the " +
+                    "User-Agent header");
+    });
+    request.open("GET", "/XMLHttpRequest/resources/inspect-headers.py?" +
+                        "filter_name=User-Agent");
+    request.send();
+  }, "userAgent value");
+}
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/NavigatorID.worker.js b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/NavigatorID.worker.js
new file mode 100644
index 000000000..9ba7defa1
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/NavigatorID.worker.js
@@ -0,0 +1,4 @@
+importScripts("/resources/testharness.js")
+importScripts("NavigatorID.js")
+run_test();
+done();
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/contains.json b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/contains.json
new file mode 100644
index 000000000..441c24cec
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/contains.json
@@ -0,0 +1,22 @@
+[
+    {
+        "id": "client-identification",
+        "original_id": "client-identification"
+    },
+    {
+        "id": "custom-handlers",
+        "original_id": "custom-handlers"
+    },
+    {
+        "id": "security-and-privacy",
+        "original_id": "security-and-privacy"
+    },
+    {
+        "id": "sample-handler-impl",
+        "original_id": "sample-handler-impl"
+    },
+    {
+        "id": "manually-releasing-the-storage-mutex",
+        "original_id": "manually-releasing-the-storage-mutex"
+    }
+]
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content.html b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content.html
new file mode 100644
index 000000000..b6b41c21f
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content.html
@@ -0,0 +1,136 @@
+<!DOCTYPE html>
+<meta charset='utf-8'>
+<title>registerContentHandler()</title>
+
+<script src='/resources/testharness.js'></script>
+<script src='/resources/testharnessreport.js'></script>
+
+<noscript><p>Enable JavaScript and reload.</p></noscript>
+
+<p><strong>Note:</strong> If your browser limits the number of handler
+registration requests on a page, you might need to disable or significantly
+increase that limit for the tests below to run.</p>
+
+
+<div id='log'></div>
+
+<script>
+test(function () {
+  assert_idl_attribute(navigator, 'registerContentHandler');
+}, 'the registerContentHandler method should exist on the navigator object');
+
+/* Happy path */
+test(function () {
+  navigator.registerContentHandler('text/x-unknown-type', location.href + '/%s', 'foo');
+}, 'a handler with valid arguments should work');
+
+
+/* URL argument */
+test(function () {
+  navigator.registerContentHandler('text/x-unknown-type', '%s', 'foo');
+}, 'a relative URL should work');
+
+test(function () {
+  navigator.registerContentHandler('text/x-unknown-type', location.href + '#%s', 'foo');
+}, 'a URL with a fragment identifier should work');
+
+test(function () {
+  navigator.registerContentHandler('text/x-unknown-type', location.href + '?foo=%s', 'foo');
+}, 'a URL with a query string should work');
+
+test(function () {
+  navigator.registerContentHandler('text/x-unknown-type', location.href + '?foo=%s&bar', 'foo');
+}, 'a URL with a multi-argument query string should work');
+
+test(function () {
+  navigator.registerContentHandler('text/x-unknown-type', location.href + '/%s/bar/baz/', 'foo');
+}, 'a URL with the passed string as a directory name should work');
+
+test(function () {
+  navigator.registerContentHandler('text/x-unknown-type', location.href + '/%s/bar/baz/?foo=1337&bar#baz', 'foo');
+}, 'a URL with the passed string as a directory name followed by a query string and fragment identifier should work');
+
+test(function () {
+  navigator.registerContentHandler('text/x-unknown-type', location.href + '/%s/foo/%s/', 'foo');
+}, 'a URL with the passed string included twice should work');
+
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerContentHandler('text/x-unknown-type', '', 'foo') } );
+}, 'an empty url argument should throw SYNTAX_ERR');
+
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerContentHandler('text/x-unknown-type', 'http://%s.com', 'foo') } );
+}, '%s instead of domain name should throw SYNTAX_ERR');
+
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerContentHandler('text/x-unknown-type', 'http://%s.example.com', 'foo') } );
+}, '%s instead of subdomain name should throw syntax_err');
+
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerContentHandler('text/x-unknown-type', location.href + '', 'foo') } );
+}, 'a url argument without %s should throw SYNTAX_ERR');
+
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerContentHandler('text/x-unknown-type', 'http://example.com', 'foo') } );
+}, 'a url argument pointing to a different domain name, without %s should throw SYNTAX_ERR');
+
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerContentHandler('text/x-unknown-type', location.href + '/%', 'foo') } );
+}, 'a url argument without %s (but with %) should throw SYNTAX_ERR');
+
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerContentHandler('text/x-unknown-type', location.href + '/%a', 'foo') } );
+}, 'a url argument without %s (but with %a) should throw SYNTAX_ERR');
+
+test(function () {
+  assert_throws('SECURITY_ERR', function () { navigator.registerContentHandler('text/x-unknown-type', 'http://example.com/%s', 'foo') } );
+}, 'a url argument pointing to a different domain name should throw SECURITY_ERR');
+
+test(function () {
+  assert_throws('SECURITY_ERR', function () { navigator.registerContentHandler('text/x-unknown-type', 'https://example.com/%s', 'foo') } );
+}, 'a url argument pointing to a different domain name should throw SECURITY_ERR (2)');
+
+test(function () {
+  assert_throws('SECURITY_ERR', function () { navigator.registerContentHandler('text/x-unknown-type', 'http://foobar.example.com/%s', 'foo') } );
+}, 'a url argument pointing to a different domain name should throw SECURITY_ERR (3)');
+
+/* Content type argument */
+
+/* The following MIME types are handled natively by the browser, and must not
+ * be possible to override. Note that this list only covers a few basic content
+ * types. Full lists of content types handled by each browser is found under
+ * /vendor/. */
+
+var blacklist = new Array(
+  'image/jpeg',
+  'text/html',
+  'text/javascript',
+  'text/plain');
+
+for (var bi=0, bl=blacklist.length; bi<bl; ++bi){
+
+  test(function () {
+    assert_throws('SECURITY_ERR', function () { navigator.registerContentHandler(blacklist[bi], location.href + '/%s', 'foo') } );
+  }, 'attempting to override the ' + blacklist[bi] + ' MIME type should throw SECURITY_ERR');
+
+}
+
+/* Overriding the following MIME types should be possible. */
+var whitelist = new Array('application/atom+xml', /* For feeds. */
+  'application/rss+xml', /* For feeds. */
+  'application/x-unrecognized', /* Arbitrary MIME types should be overridable. */
+  'text/unrecognized',
+  'foo/bar');
+
+for (var wi=0, wl=whitelist.length; wi<wl; ++wi){
+
+  test(function () {
+    navigator.registerContentHandler(whitelist[wi], location.href + '/%s', 'foo');
+  }, 'overriding the ' + whitelist[wi] + ' MIME type should work');
+
+}
+
+</script>
+
+</body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/001.xhtml b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/001.xhtml
new file mode 100644
index 000000000..a0d2fa15b
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/001.xhtml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>isContentHandlerRegistered for new content type</title>
+<script src='/resources/testharness.js'></script>
+<script src='/resources/testharnessreport.js'></script>
+<script type="application/ecmascript">
+test(function() {
+  assert_equals(navigator.isContentHandlerRegistered('application/x-notRegisteredInOtherTCs-001', location.href.replace(/\/[^\/]*$/, "") + '/%s'), 'new');
+});
+</script>
+</head>
+<body>
+<div id="log"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/002.xhtml b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/002.xhtml
new file mode 100644
index 000000000..d5c2ff3e0
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/002.xhtml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>isContentHandlerRegistered for content type that is not yet accepted</title>
+<script src='/resources/testharness.js'></script>
+<script src='/resources/testharnessreport.js'></script>
+<script type="application/ecmascript">
+test(function() {
+  var ctype = 'application/x-notRegisteredInOtherTCs-002';
+  var url = location.href.replace(/\/[^\/]*$/, "") + "/%s";
+  navigator.registerContentHandler(ctype, url, 'test');
+  assert_equals(navigator.isContentHandlerRegistered(ctype, url), 'declined');
+});
+</script>
+</head>
+<body>
+<div id="log"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/003.xhtml b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/003.xhtml
new file mode 100644
index 000000000..92e7ca8f5
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/003.xhtml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>Content type case insensitivity in isContentHandlerRegistered</title>
+<script src='/resources/testharness.js'></script>
+<script src='/resources/testharnessreport.js'></script>
+<script type="application/ecmascript">
+test(function()	{
+ var ctype = 'application/x-notRegisteredInOtherTCs-003', url = location.href.replace(/\/[^\/]*$/, "") + '/%s';
+ navigator.registerContentHandler(ctype, url, 'test');
+ assert_equals(navigator.isContentHandlerRegistered(ctype.toUpperCase(), url), 'declined');
+});
+</script>
+</head>
+<body>
+<div id="log"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/004.xhtml b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/004.xhtml
new file mode 100644
index 000000000..a82f3506b
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/004.xhtml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>Non-matching url in isContentHandlerRegistered</title>
+<script src='/resources/testharness.js'></script>
+<script src='/resources/testharnessreport.js'></script>
+<script type="application/ecmascript">
+test(function() {
+  var ctype = 'application/x-notRegisteredInOtherTCs-004', url = location.href.replace(/\/[^\/]*$/, "") + '/%s';
+  navigator.registerContentHandler(ctype, url, 'test');
+  assert_equals(navigator.isContentHandlerRegistered(ctype, 'http://t/core/standards/registerhandler/%s'), 'new');
+});
+</script>
+</head>
+<body>
+<div id="log"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/005.xhtml b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/005.xhtml
new file mode 100644
index 000000000..b8c8b58d1
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/005.xhtml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>Invalid characters in content type in isContentHandlerRegistered</title>
+<script src='/resources/testharness.js'></script>
+<script src='/resources/testharnessreport.js'></script>
+<script type="application/ecmascript">
+test(function() {
+  var ctype = 'application/x-nótRegísteredInOthérTCs-004', url = location.href.replace(/\/[^\/]*$/, "") + '/%s';
+  navigator.registerContentHandler(ctype, url, 'test');
+  assert_equals(navigator.isContentHandlerRegistered(ctype, 'http://t/core/standards/registerhandler/%s'), 'new');
+});
+</script>
+</head>
+<body>
+<div id="log"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/006.xhtml b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/006.xhtml
new file mode 100644
index 000000000..86d0cff61
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/content/006.xhtml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>Blacklisted content type and isContentHandlerRegistered</title>
+<script src='/resources/testharness.js'></script>
+<script src='/resources/testharnessreport.js'></script>
+<script type="application/ecmascript">
+test(function() {
+  var ctype = 'application/xhtml+xml', url = location.href.replace(/\/[^\/]*$/, "") + '/%s';
+  navigator.registerContentHandler(ctype, url, 'test');
+  assert_equals(navigator.isContentHandlerRegistered(ctype, 'http://t/core/standards/registerhandler/%s'), 'new');
+});
+</script>
+</head>
+<body>
+<div id="log"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/get-navigatorlanguage-manual.html b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/get-navigatorlanguage-manual.html
new file mode 100644
index 000000000..4bdab9112
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/get-navigatorlanguage-manual.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>NavigatorLanguage: navigator.language returns the user's preferred language</title>
+<link rel="author" title="Intel" href="http://www.intel.com">
+<link rel="help" href="https://html.spec.whatwg.org/multipage/#navigatorlanguage">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<h2>Precondition</h2>
+<p>The user agent's preferred language is set as English (en).</p>
+<div id="log"></div>
+<script>
+  test(function() {
+    assert_equals(navigator.language, "en");
+  });
+</script>
+
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/navigator-indexed.html b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/navigator-indexed.html
new file mode 100644
index 000000000..a971fe9d1
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/navigator-indexed.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Test for lack of indexed getter on Navigator</title>
+<link rel="author" title="Ms2ger" href="mailto:Ms2ger@gmail.com">
+<link rel="help" href="https://html.spec.whatwg.org/multipage/#the-navigator-object">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  assert_false("0" in window.navigator);
+  assert_equals(window.navigator[0], undefined);
+}, "window.navigator[0] should not exist");
+test(function() {
+  window.navigator[0] = "pass";
+  assert_true("0" in window.navigator);
+  assert_equals(window.navigator[0], "pass");
+}, "window.navigator[0] should be settable");
+test(function() {
+  assert_false("-1" in window.navigator);
+  assert_equals(window.navigator[-1], undefined);
+}, "window.navigator[-1] should not exist");
+test(function() {
+  window.navigator[-1] = "pass";
+  assert_true("-1" in window.navigator);
+  assert_equals(window.navigator[-1], "pass");
+}, "window.navigator[-1] should be settable");
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/navigatorlanguage.html b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/navigatorlanguage.html
new file mode 100644
index 000000000..d56df8a3d
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/navigatorlanguage.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>NavigatorLanguage: the most preferred language is the one returned by navigator.language</title>
+<link rel="author" title="Intel" href="http://www.intel.com">
+<link rel="help" href="https://html.spec.whatwg.org/multipage/#navigatorlanguage">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+  test(function() {
+    assert_true("language" in navigator);
+    assert_true("languages" in navigator);
+
+    assert_equals(navigator.languages[0], navigator.language,
+    "navigator.languages is the most preferred language first");
+
+  });
+</script>
+
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol.html b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol.html
new file mode 100644
index 000000000..a9ceee5a8
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol.html
@@ -0,0 +1,214 @@
+<!DOCTYPE html>
+<meta charset='utf-8'>
+<title>registerProtocolHandler()</title>
+
+<script src='/resources/testharness.js'></script>
+<script src='/resources/testharnessreport.js'></script>
+
+<noscript><p>Enable JavaScript and reload.</p></noscript>
+
+<p><strong>Note:</strong> If your browser limits the number of handler
+registration requests on a page, you might need to disable or significantly
+increase that limit for the tests below to run.</p>
+
+<div id='log'></div>
+
+<script type='text/javascript'>
+
+test(function () {
+  assert_idl_attribute(navigator, 'registerProtocolHandler');
+}, 'the registerProtocolHandler method should exist on the navigator object');
+
+test(function () {
+  navigator.registerProtocolHandler('tel', location.href + '/%s', 'foo');
+}, 'a handler with valid arguments should work');
+
+
+/* URL argument */
+test(function () {
+  navigator.registerProtocolHandler('tel', '%s', 'foo');
+}, 'a relative URL should work');
+
+test(function () {
+  navigator.registerProtocolHandler('tel', location.href + '#%s', 'foo');
+}, 'a URL with a fragment identifier should work');
+
+test(function () {
+  navigator.registerProtocolHandler('tel', location.href + '?foo=%s', 'foo');
+}, 'a URL with a query string should work');
+
+test(function () {
+  navigator.registerProtocolHandler('tel', location.href + '?foo=%s&bar', 'foo');
+}, 'a URL with a multi-argument query string should work');
+
+test(function () {
+  navigator.registerProtocolHandler('tel', location.href + '/%s/bar/baz/', 'foo');
+}, 'a URL with the passed string as a directory name should work');
+
+test(function () {
+  navigator.registerProtocolHandler('tel', location.href + '/%s/bar/baz/?foo=1337&bar#baz', 'foo');
+}, 'a URL with the passed string as a directory name followed by a query string and fragment identifier should work');
+
+test(function () {
+  navigator.registerProtocolHandler('tel', location.href + '/%s/foo/%s/', 'foo');
+}, 'a URL with the passed string included twice should work');
+
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerProtocolHandler('mailto', '', 'foo') } );
+}, 'an empty url argument should throw SYNTAX_ERR');
+
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerProtocolHandler('mailto', 'http://%s.com', 'foo') } );
+}, '%s instead of domain name should throw SYNTAX_ERR');
+
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerProtocolHandler('mailto', 'http://%s.example.com', 'foo') } );
+}, '%s instead of subdomain name should throw SYNTAX_ERR');
+
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerProtocolHandler('mailto', location.href + '', 'foo') } );
+}, 'a url argument without %s should throw SYNTAX_ERR');
+
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerProtocolHandler('mailto', 'http://example.com', 'foo') } );
+}, 'a url argument pointing to a different domain name, without %s should throw SYNTAX_ERR');
+
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerProtocolHandler('mailto', location.href + '/%', 'foo') } );
+}, 'a url argument without %s (but with %) should throw SYNTAX_ERR');
+
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerProtocolHandler('mailto', location.href + '/%a', 'foo') } );
+}, 'a url argument without %s (but with %a) should throw SYNTAX_ERR');
+
+test(function () {
+  assert_throws('SECURITY_ERR', function () { navigator.registerProtocolHandler('mailto', 'http://example.com/%s', 'foo') } );
+}, 'a url argument pointing to a different domain name should throw SECURITY_ERR');
+
+test(function () {
+  assert_throws('SECURITY_ERR', function () { navigator.registerProtocolHandler('mailto', 'https://example.com/%s', 'foo') } );
+}, 'a url argument pointing to a different domain name should throw SECURITY_ERR (2)');
+
+test(function () {
+  assert_throws('SECURITY_ERR', function () { navigator.registerProtocolHandler('mailto', 'http://foobar.example.com/%s', 'foo') } );
+}, 'a url argument pointing to a different domain name should throw SECURITY_ERR (3)');
+
+test(function () {
+  assert_throws('SECURITY_ERR', function () { navigator.registerProtocolHandler('mailto', 'mailto:%s@example.com', 'foo') } );
+}, 'looping handlers should throw SECURITY_ERR');
+
+test(function () {
+  assert_throws('SECURITY_ERR', function () { navigator.registerProtocolHandler('sms', 'tel:%s', 'foo') } );
+}, 'a url argument pointing to a non-http[s] scheme should throw SECURITY_ERR due to not being of the same origin');
+
+/* Protocol argument */
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerProtocolHandler('unrecognized', location.href + '/%a', 'foo') } );
+}, 'a protocol argument containing an unrecognized scheme should throw SECURITY_ERR'); /* This is a whitelist, not a blacklist. */
+
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerProtocolHandler('mailto:', location.href + '/%a', 'foo') } );
+}, 'a protocol argument containing : should throw SYNTAX_ERR');
+
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerProtocolHandler('mailto://', location.href + '/%a', 'foo') } );
+}, 'a protocol argument containing :// should throw SYNTAX_ERR');
+
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerProtocolHandler('http://', location.href + '/%a', 'foo') } );
+}, 'a protocol argument containing http:// should throw SYNTAX_ERR');
+
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerProtocolHandler('mailto' + String.fromCharCode(0), location.href + '/%a', 'foo') } );
+}, 'a protocol argument containing a null character should throw SYNTAX_ERR');
+
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerProtocolHandler('mailtoo' + String.fromCharCode(8), location.href + '/%a', 'foo') } );
+}, 'a protocol argument containing a backspace character should throw SYNTAX_ERR');
+
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerProtocolHandler('mailto' + String.fromCharCode(10), location.href + '/%a', 'foo') } );
+}, 'a protocol argument containing a LF character should throw SYNTAX_ERR');
+
+test(function () {
+  assert_throws('SYNTAX_ERR', function () { navigator.registerProtocolHandler('mаilto', location.href + '/%a', 'foo') } );
+}, 'a protocol argument containing non-alphanumeric characters (like a cyrillic “а”) should throw SYNTAX_ERR');
+
+test(function () {
+  navigator.registerProtocolHandler('TEL', location.href + '/%s', 'foo');
+}, 'a protocol argument of “TEL” should be equivalent to “tel”');
+
+test(function () {
+  navigator.registerProtocolHandler('teL', location.href + '/%s', 'foo');
+}, 'a protocol argument of “teL” should be equivalent to “tel”');
+
+
+/* Overriding any of the following protocols must never be allowed. That would
+ * break the browser. */
+var blacklist = new Array(
+  'about',
+  'attachment',
+  'blob',
+  'chrome',
+  'cid',
+  'data',
+  'file',
+  'ftp',
+  'http',
+  'https',
+  'javascript',
+  'livescript',
+  'mid',
+  'mocha',
+  'opera',
+  'operamail',
+  'res',
+  'resource',
+  'shttp',
+  'tcl',
+  'vbscript',
+  'view-source',
+  'ws',
+  'wss',
+  'wyciwyg');
+
+for ( var bi=0, bl=blacklist.length; bi<bl; ++bi ){
+
+  test(function () {
+    assert_throws('SECURITY_ERR', function () { navigator.registerProtocolHandler(blacklist[bi], location.href + '/%s', 'foo') } );
+  }, 'attempting to override the ' + blacklist[bi] + ' protocol should throw SECURITY_ERR');
+
+}
+
+/* The following protocols must be possible to override.
+ * We're just testing that the call goes through here. Whether or not they
+ * actually work as handlers is covered by the interactive tests. */
+var whitelist = new Array(
+  'geo',
+  'im',
+  'irc',
+  'ircs',
+  'mailto',
+  'mms',
+  'news',
+  'nntp',
+  'sms',
+  'smsto',
+  'tel',
+  'urn',
+  'webcal',
+  'wtai',
+  'xmpp');
+
+for ( var wi=0, wl=whitelist.length; wi<wl; ++wi ){
+
+  test(function () {
+    navigator.registerProtocolHandler(whitelist[wi], location.href + '/%s', 'foo');
+    assert_true(true);
+  }, 'overriding the ' + whitelist[wi] + ' protocol should work');
+
+}
+</script>
+
+</body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/001.xhtml b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/001.xhtml
new file mode 100644
index 000000000..ce9ee1eb0
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/001.xhtml
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>isProtocolHandlerRegistered for new protocol</title>
+<script src='/resources/testharness.js'></script>
+<script src='/resources/testharnessreport.js'></script>
+<script type="application/ecmascript">
+test(function() {
+  var dir_uri = location.href.replace(/\/[^\/]*$/, "");
+  assert_equals(navigator.isProtocolHandlerRegistered('web+CustomProtocolOne', dir_uri + '/%s'), 'new');
+});
+</script>
+</head>
+<body>
+<div id="log"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/002.xhtml b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/002.xhtml
new file mode 100644
index 000000000..ce2c8dc0d
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/002.xhtml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>isProtocolHandlerRegistered for protocol that is not yet accepted</title>
+<script src='/resources/testharness.js'></script>
+<script src='/resources/testharnessreport.js'></script>
+<script type="application/ecmascript">
+test(function() {
+  var scheme = 'web+CustomProtocolTwo';
+  var url = location.href.replace(/\/[^\/]*$/, "") + '/%s';
+  navigator.registerProtocolHandler(scheme, url, 'Ignore dialog or decline it');
+  assert_equals(navigator.isProtocolHandlerRegistered(scheme, url), 'declined')
+})
+</script>
+</head>
+<body>
+<div id="log"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/003.xhtml b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/003.xhtml
new file mode 100644
index 000000000..035d5b9a6
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/003.xhtml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>Protocol case insensitivity in isProtocolHandlerRegistered</title>
+<script src='/resources/testharness.js'></script>
+<script src='/resources/testharnessreport.js'></script>
+<script type="application/ecmascript">
+test(function() {
+  var scheme = 'web+CustomProtocolTree', url = location.href.replace(/\/[^\/]*$/, "") + '/%s';
+  navigator.registerProtocolHandler(scheme, url, 'Ignore dialog or decline it');
+  assert_equals(navigator.isProtocolHandlerRegistered(scheme.toUpperCase(), url), 'declined');
+});
+</script>
+</head>
+<body>
+<div id="log"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/004.xhtml b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/004.xhtml
new file mode 100644
index 000000000..3fd14dd12
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/004.xhtml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>Non-matching url in isProtocolHandlerRegistered</title>
+<script src='/resources/testharness.js'></script>
+<script src='/resources/testharnessreport.js'></script>
+<script type="application/ecmascript">
+test(function() {
+  var scheme = 'web+CustomProtocolFour', url = location.href.replace(/\/[^\/]*$/, "") + '/%s';
+  navigator.registerProtocolHandler(scheme, url, 'Ignore dialog');
+  assert_equals(navigator.isProtocolHandlerRegistered(scheme, 'http://t/core/standards/registerhandler/%s'), 'new');
+});
+</script>
+</head>
+<body>
+<div id="log"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/005.xhtml b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/005.xhtml
new file mode 100644
index 000000000..894ff4a6a
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/005.xhtml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>Invalid characters in protocol scheme and isProtocolHandlerRegistered</title>
+<script src='/resources/testharness.js'></script>
+<script src='/resources/testharnessreport.js'></script>
+<script type="application/ecmascript">
+test(function() {
+  var scheme = 'web+CústomPrótocolFíve', url = location.href.replace(/\/[^\/]*$/, "") + '/%s';
+  navigator.registerProtocolHandler(scheme, url, 'Ignore dialog or decline it');
+  assert_equals(navigator.isProtocolHandlerRegistered(scheme, url), 'new');
+});
+</script>
+</head>
+<body>
+<div id="log"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/006.xhtml b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/006.xhtml
new file mode 100644
index 000000000..7529a7eb2
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/system-state-and-capabilities/the-navigator-object/protocol/006.xhtml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>Scheme outside white list and isProtocolHandlerRegistered</title>
+<script src='/resources/testharness.js'></script>
+<script src='/resources/testharnessreport.js'></script>
+<script type="application/ecmascript">
+test(function()	{
+  var dir_uri = location.href.replace(/\/[^\/]*$/, "");
+  var scheme = 'http', url = dir_uri + '/%s';
+  navigator.registerProtocolHandler(scheme, url, 'Ignore dialog or decline it');
+  assert_equals(navigator.isProtocolHandlerRegistered(scheme, url), 'new');
+});
+</script>
+</head>
+<body>
+<div id="log"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/html/webappapis/timers/.gitkeep b/testing/web-platform/tests/html/webappapis/timers/.gitkeep
new file mode 100644
index 000000000..e69de29bb
diff --git a/testing/web-platform/tests/html/webappapis/timers/evil-spec-example.html b/testing/web-platform/tests/html/webappapis/timers/evil-spec-example.html
new file mode 100644
index 000000000..77a874690
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/timers/evil-spec-example.html
@@ -0,0 +1,23 @@
+<!doctype html>
+<title>Interaction of setTimeout and WebIDL</title>
+<link rel="author" title="Ian Hickson" href="mailto:ian@hixie.ch">
+<link rel="author" title="Ms2ger" href="mailto:ms2ger@gmail.com">
+<link rel="help" href="https://html.spec.whatwg.org/multipage/#dom-windowtimers-settimeout">
+<link rel="help" href="https://heycam.github.io/webidl/#es-operations">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+var t = async_test()
+function finishTest() {
+  assert_equals(log, "ONE TWO ")
+  t.done()
+}
+var log = '';
+function logger(s) { log += s + ' '; }
+
+setTimeout({ toString: function () {
+  setTimeout("logger('ONE')", 100);
+  return "logger('TWO'); t.step(finishTest)";
+} }, 100);
+</script>
diff --git a/testing/web-platform/tests/html/webappapis/user-prompts/.gitkeep b/testing/web-platform/tests/html/webappapis/user-prompts/.gitkeep
new file mode 100644
index 000000000..e69de29bb
diff --git a/testing/web-platform/tests/html/webappapis/user-prompts/dialogs-implemented-using-separate-documents/.gitkeep b/testing/web-platform/tests/html/webappapis/user-prompts/dialogs-implemented-using-separate-documents/.gitkeep
new file mode 100644
index 000000000..e69de29bb
diff --git a/testing/web-platform/tests/html/webappapis/user-prompts/printing/.gitkeep b/testing/web-platform/tests/html/webappapis/user-prompts/printing/.gitkeep
new file mode 100644
index 000000000..e69de29bb
diff --git a/testing/web-platform/tests/html/webappapis/user-prompts/simple-dialogs/.gitkeep b/testing/web-platform/tests/html/webappapis/user-prompts/simple-dialogs/.gitkeep
new file mode 100644
index 000000000..e69de29bb
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