diff --git a/cookies/secure/set-from-dom.sub.html b/cookies/secure/set-from-dom.sub.html
deleted file mode 100644
index 91aa8fff3b706c..00000000000000
--- a/cookies/secure/set-from-dom.sub.html
+++ /dev/null
@@ -1,47 +0,0 @@
-<!doctype html>
-<html>
-<head>
-  <meta charset=utf-8>
-  <title>Set 'secure' cookie from `document.cookie` on a non-secure page</title>
-  <meta name=help href="https://tools.ietf.org/html/draft-west-leave-secure-cookies-alone">
-  <script src="/resources/testharness.js"></script>
-  <script src="/resources/testharnessreport.js"></script>
-  <script src="/cookies/resources/testharness-helpers.js"></script>
-</head>
-<body>
-<div id=log></div>
-<script>
-  var tests = [
-    [
-      "'secure' cookie not set in `document.cookie`",
-      function () {
-        var originalCookie = document.cookie;
-        document.cookie = "secure_from_nonsecure_dom=1; secure; path=/";
-        assert_equals(document.cookie, originalCookie);
-        this.done();
-      }
-    ],
-    [
-      "'secure' cookie not sent in HTTP request",
-      function () {
-        document.cookie = "secure_from_nonsecure_dom=1; secure; path=/";
-        fetch("https://{{host}}:{{ports[https][0]}}/cookies/resources/echo-json.py", { "credentials": "include" })
-          .then(this.step_func(function (r) {
-              return r.json();
-          }))
-          .then(this.step_func_done(function (j) {
-              assert_equals(j["secure_from_nonsecure_dom"], undefined);
-          }));
-      }
-    ]
-  ];
-
-  function clearKnownCookie() {
-    document.cookie = "secure_from_nonsecure_dom=0; Secure; expires=Thu, 01 Jan 1970 00:00:01 GMT; path=/";
-  }
-
-  executeTestsSerially(tests, clearKnownCookie, clearKnownCookie);
-</script>
-</body>
-</html>
-
diff --git a/cookies/secure/set-from-http.sub.html b/cookies/secure/set-from-http.sub.html
deleted file mode 100644
index c80cc341017b5b..00000000000000
--- a/cookies/secure/set-from-http.sub.html
+++ /dev/null
@@ -1,36 +0,0 @@
-<!doctype html>
-<html>
-<head>
-  <meta charset=utf-8>
-  <title>Set 'secure' cookie from `Set-Cookie` HTTP header on a non-secure page</title>
-  <meta name=help href="https://tools.ietf.org/html/draft-west-leave-secure-cookies-alone">
-  <script src="/resources/testharness.js"></script>
-  <script src="/resources/testharnessreport.js"></script>
-  <script src="/cookies/resources/testharness-helpers.js"></script>
-</head>
-<body>
-<div id=log></div>
-<script>
-  function clearKnownCookie() {
-    document.cookie = "secure_from_nonsecure_http=0; Secure; expires=Thu, 01 Jan 1970 00:00:01 GMT; path=/";
-  }
-
-  test(function () {
-    assert_equals(document.cookie.match(/secure_from_nonsecure_http=1/), null);
-  }, "'secure' cookie not present in `document.cookie`");
-
-  promise_test(function (t) {
-    t.add_cleanup(clearKnownCookie);
-    return fetch("https://{{host}}:{{ports[https][0]}}/cookies/resources/echo-json.py",
-                 { "credentials": "include" })
-      .then(function (r) {
-        return r.json();
-      })
-      .then(function (j) {
-        assert_equals(j["secure_from_nonsecure_http"], undefined);
-      });
-  }, "'secure' cookie not sent in HTTP request");
-</script>
-</body>
-</html>
-
