Add the missing change hint for 'counter-set'.

Differential Revision: https://phabricator.services.mozilla.com/D27735

bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1544590
gecko-commit: 30ab155d08d22d95a667c98056d703a726a7e933
gecko-integration-branch: central
gecko-reviewers: emilio
diff --git a/css/css-lists/counter-set-002-ref.html b/css/css-lists/counter-set-002-ref.html
new file mode 100644
index 0000000..5ee2e30
--- /dev/null
+++ b/css/css-lists/counter-set-002-ref.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+  <meta charset="utf-8">
+  <title>CSS Lists: dynamic update test for 'counter-set'</title>
+  <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.org">
+</head>
+<body>
+<ol><li></li></ol>
+</body>
+</html>
diff --git a/css/css-lists/counter-set-002.html b/css/css-lists/counter-set-002.html
new file mode 100644
index 0000000..a479259
--- /dev/null
+++ b/css/css-lists/counter-set-002.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+  <meta charset="utf-8">
+  <title>CSS Lists: dynamic update test for 'counter-set'</title>
+  <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.org">
+  <link rel="help" href="https://drafts.csswg.org/css-lists/#propdef-counter-set">
+  <link rel="match" href="counter-set-002-ref.html">
+</head>
+<body onload="document.getElementById('item').style=''">
+<noscript>Test not run - javascript required.</noscript>
+<ol><li id="item" style="counter-increment: list-item 3"></li></ol>
+</body>
+</html>
diff --git a/html/semantics/grouping-content/the-li-element/grouping-li-reftest-003-ref.html b/html/semantics/grouping-content/the-li-element/grouping-li-reftest-003-ref.html
new file mode 100644
index 0000000..dbe4c05
--- /dev/null
+++ b/html/semantics/grouping-content/the-li-element/grouping-li-reftest-003-ref.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+  <meta charset="utf-8">
+  <title>HTML LI element: dynamic update test for LI @value</title>
+  <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.org">
+</head>
+<body onload="document.getElementById('item').removeAttribute('value');">
+<ol><li id="item" value="3"></li></ol>
+</body>
+</html>
diff --git a/html/semantics/grouping-content/the-li-element/grouping-li-reftest-003.html b/html/semantics/grouping-content/the-li-element/grouping-li-reftest-003.html
new file mode 100644
index 0000000..bad3819
--- /dev/null
+++ b/html/semantics/grouping-content/the-li-element/grouping-li-reftest-003.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+  <meta charset="utf-8">
+  <title>HTML LI element: dynamic update test for LI @value</title>
+  <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.org">
+  <link rel="help" href="https://html.spec.whatwg.org/multipage/grouping-content.html#the-li-element">
+  <link rel="help" href="https://drafts.csswg.org/css-lists/#propdef-counter-set">
+  <link rel="match" href="grouping-li-reftest-003-ref.html">
+</head>
+<body onload="document.getElementById('item').removeAttribute('value');">
+<noscript>Test not run - javascript required.</noscript>
+<ol><li id="item" value="3"></li></ol>
+</body>
+</html>