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diff --git a/layout/style/test/test_css_cross_domain_no_orb.html b/layout/style/test/test_css_cross_domain_no_orb.html
new file mode 100644
index 0000000000..27ede793be
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+++ b/layout/style/test/test_css_cross_domain_no_orb.html
@@ -0,0 +1,147 @@
+<!DOCTYPE HTML>
+<html>
+<!-- https://bugzilla.mozilla.org/show_bug.cgi?id=524223 -->
+<head>
+  <title>Test cross-domain CSS loading</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css"
+        href="/tests/SimpleTest/test.css"/>
+  <style type="text/css">
+    hr { border: none; clear: both }
+    .column {
+        margin: 10px;
+        float: left;
+    }
+    iframe {
+        width: 40px;
+        height: 680px;
+        border: none;
+        margin: 0;
+        padding: 0;
+    }
+    h2 { font-weight: normal; padding: 0 }
+    ol, h2 { font-size: 13px; line-height: 20px; }
+    ol { padding-left: 1em;
+         list-style-type: upper-roman }
+    ol ol { list-style-type: upper-alpha }
+    ol ol ol { list-style-type: decimal }
+  </style>
+</head>
+<body>
+<a target="_blank"
+   href="https://bugzilla.mozilla.org/show_bug.cgi?id=524223">Mozilla
+   Bug 524223</a>
+
+<hr/>
+
+<div class="column">
+<h2>&nbsp;</h2>
+<ol><li>text/css<ol><li>same origin<ol><li>valid</li>
+                                       <li>malformed</li>
+                                       <li>http error</li></ol></li>
+                  <li>cross origin<ol><li>valid</li>
+                                      <li>malformed</li>
+                                      <li>http error</li></ol></li>
+                  <li>same to cross<ol><li>valid</li>
+                                       <li>malformed</li>
+                                       <li>http error</li></ol></li>
+                  <li>cross to same<ol><li>valid</li>
+                                       <li>malformed</li>
+                                       <li>http error</li></ol></li></ol></li>
+    <li>text/html<ol><li>same origin<ol><li>valid</li>
+                                        <li>malformed</li>
+                                        <li>http error</li></ol></li>
+                     <li>cross origin<ol><li>valid</li>
+                                         <li>malformed</li>
+                                         <li>http error</li></ol></li>
+                     <li>same to cross<ol><li>valid</li>
+                                          <li>malformed</li>
+                                          <li>http error</li></ol></li>
+                     <li>cross to same<ol><li>valid</li>
+                                          <li>malformed</li>
+                                          <li>http error</li></ol></li></ol></li>
+</ol>
+</div>
+
+<div class="column">
+<h2>Quirks</h2>
+<div id="quirks-placeholder"></div>
+</div>
+
+<div class="column">
+<h2>Standards</h2>
+<div id="standards-placeholder"></div>
+</div>
+
+<script type="application/javascript">
+
+const COLOR = {red: "rgb(255, 0, 0)", lime: "rgb(0, 255, 0)"};
+
+/** Test for Bug 524223 **/
+function check_iframe(ifr) {
+  var doc = ifr.contentDocument;
+  var cases = doc.getElementsByTagName("p");
+
+  for (var i = 0; i < cases.length; i++) {
+	  var color = doc.defaultView.getComputedStyle(cases[i])
+        .getPropertyValue("background-color");
+
+    var id = cases[i].id;
+	  is(color, COLOR.lime, ifr.id + " " + id);
+  }
+}
+
+SimpleTest.waitForExplicitFinish();
+
+function insertIFrames(src, id) {
+  const quirks = document.createElement("iframe");
+  quirks.src = "ccd-quirks.html";
+  quirks.id = "quirks";
+  document.getElementById("quirks-placeholder").replaceWith(quirks);
+
+  const standards = document.createElement("iframe");
+  standards.src = "ccd-standards.html";
+  standards.id = "standards";
+  document.getElementById("standards-placeholder").replaceWith(standards);
+}
+
+var hasQuirksLoaded = false;
+var hasStandardsLoaded = false;
+
+function quirksLoaded() {
+  hasQuirksLoaded = true;
+  MaybeRunTest();
+}
+
+function standardsLoaded() {
+  hasStandardsLoaded = true;
+  MaybeRunTest();
+}
+
+function runTest() {
+  check_iframe(document.getElementById("quirks"));
+  check_iframe(document.getElementById("standards"));
+}
+
+function MaybeRunTest() {
+  if (!hasQuirksLoaded || !hasStandardsLoaded) {
+      return;
+  }
+
+  runTest();
+  SimpleTest.finish();
+}
+
+window.onload = async function() {
+  await SpecialPowers.pushPrefEnv(
+    {
+      set: [
+        ['browser.opaqueResponseBlocking', false],
+      ],
+    }
+  );
+  insertIFrames();
+};
+</script>
+</body>
+</html>