diff -r 000000000000 -r 6474c204b198 browser/devtools/webconsole/test/browser_webconsole_autocomplete_crossdomain_iframe.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/webconsole/test/browser_webconsole_autocomplete_crossdomain_iframe.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,59 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that autocomplete doesn't break when trying to reach into objects from
+// a different domain, bug 989025.
+
+function test() {
+  let hud;
+
+  const TEST_URI = "http://example.com/browser/browser/devtools/webconsole/test/test-bug-989025-iframe-parent.html";
+
+  Task.spawn(function*() {
+    const {tab} = yield loadTab(TEST_URI);
+    hud = yield openConsole(tab);
+
+    hud.jsterm.execute('document.title');
+
+    yield waitForMessages({
+      webconsole: hud,
+      messages: [{
+        text: "989025 - iframe parent",
+        category: CATEGORY_OUTPUT,
+      }],
+    });
+
+    let autocompleteUpdated = hud.jsterm.once("autocomplete-updated");
+
+    hud.jsterm.setInputValue("window[0].document");
+    executeSoon(() => {
+      EventUtils.synthesizeKey(".", {});
+    });
+
+    yield autocompleteUpdated;
+
+    hud.jsterm.setInputValue("window[0].document.title");
+    EventUtils.synthesizeKey("VK_RETURN", {});
+
+    yield waitForMessages({
+      webconsole: hud,
+      messages: [{
+        text: "Permission denied",
+        category: CATEGORY_OUTPUT,
+        severity: SEVERITY_ERROR,
+      }],
+    });
+
+    hud.jsterm.execute("window.location");
+
+    yield waitForMessages({
+      webconsole: hud,
+      messages: [{
+        text: "test-bug-989025-iframe-parent.html",
+        category: CATEGORY_OUTPUT,
+      }],
+    });
+
+    yield closeConsole(tab);
+  }).then(finishTest);
+}