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diff --git a/dom/html/test/test_imports_nested_2.html b/dom/html/test/test_imports_nested_2.html
new file mode 100644
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+++ b/dom/html/test/test_imports_nested_2.html
@@ -0,0 +1,56 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=877072
+-->
+<head>
+  <title>Test for Bug 877072</title>
+  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+  <meta http-equiv="Content-Type" content="text/html;charset=utf-8">
+</head>
+<body>
+  <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=877072">Mozilla Bug 877072</a>
+
+  <script type="text/javascript">
+    SimpleTest.waitForExplicitFinish();
+    var counter = 0;
+    var fcounter = 0;
+    var order = [];
+    function loaded() {
+      counter++;
+    }
+    function failed() {
+      fcounter++;
+    }
+  </script>
+
+<!--
+
+Master -> c1 -> ... -> C10
+|  |                    |
+|  - - -> D             |
+|         ^             |
+|         |             |
+ - - - -> E < - - - - - -
+
+This test is for testing ImportLoader::UpdateDependants.Because of the long
+chain to C10, it's very likely that C10->E will be the last edge the ImportLoaders
+find. At that point it won't only have to update E but also its subimport D.
+
+-->
+
+  <link rel="import" href="imports/file_importC1.html" onload="loaded()" onerror="failed()"></link>
+  <link rel="import" href="imports/file_importD.html" onload="loaded()" onerror="failed()"></link>
+  <link rel="import" href="imports/file_importE.html" onload="loaded()" onerror="failed()"></link>
+
+  <script type="text/javascript">
+    is(counter, 14, "Imports are loaded"); // 12 imports but 14 link imports...
+    is(fcounter, 0, "No error in imports");
+    var expected = ["D", "E", "C10", "C9", "C8", "C7", "C6", "C5", "C4", "C3", "C2", "C1"];
+    for (i in expected)
+      is(order[i], expected[i], "import " + i + " should be " + expected[i]);
+    SimpleTest.finish();
+  </script>
+</body>
+</html>