diff -r 000000000000 -r 6474c204b198 toolkit/mozapps/extensions/test/xpinstall/browser_cookies2.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/mozapps/extensions/test/xpinstall/browser_cookies2.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,40 @@
+// ----------------------------------------------------------------------------
+// Test that an install that requires cookies to be sent succeeds when cookies
+// are set
+// This verifies bug 462739
+function test() {
+  Harness.installEndedCallback = install_ended;
+  Harness.installsCompletedCallback = finish_test;
+  Harness.setup();
+
+  var cm = Components.classes["@mozilla.org/cookiemanager;1"]
+                     .getService(Components.interfaces.nsICookieManager2);
+  cm.add("example.com", "/browser/" + RELATIVE_DIR, "xpinstall", "true", false,
+         false, true, (Date.now() / 1000) + 60);
+
+  var pm = Services.perms;
+  pm.add(makeURI("http://example.com/"), "install", pm.ALLOW_ACTION);
+
+  var triggers = encodeURIComponent(JSON.stringify({
+    "Cookie check": TESTROOT + "cookieRedirect.sjs?" + TESTROOT + "unsigned.xpi"
+  }));
+  gBrowser.selectedTab = gBrowser.addTab();
+  gBrowser.loadURI(TESTROOT + "installtrigger.html?" + triggers);
+}
+
+function install_ended(install, addon) {
+  install.cancel();
+}
+
+function finish_test(count) {
+  is(count, 1, "1 Add-on should have been successfully installed");
+
+  var cm = Components.classes["@mozilla.org/cookiemanager;1"]
+                     .getService(Components.interfaces.nsICookieManager2);
+  cm.remove("example.com", "xpinstall", "/browser/" + RELATIVE_DIR, false);
+
+  Services.perms.remove("example.com", "install");
+
+  gBrowser.removeCurrentTab();
+  Harness.finish();
+}