diff -r 000000000000 -r 6474c204b198 content/base/test/browser_bug902350.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/content/base/test/browser_bug902350.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,65 @@
+/*
+ * Mixed Content Block frame navigates for target="_top" - Test for Bug 902350
+ */
+
+
+const PREF_ACTIVE = "security.mixed_content.block_active_content";
+const gHttpTestRoot = "https://example.com/tests/content/base/test/";
+var origBlockActive;
+var gTestBrowser = null;
+
+registerCleanupFunction(function() {
+  // Set preferences back to their original values
+  Services.prefs.setBoolPref(PREF_ACTIVE, origBlockActive);
+});
+
+function MixedTestsCompleted() {
+  gBrowser.removeCurrentTab();
+  window.focus();
+  finish();
+}
+
+function test() {
+  waitForExplicitFinish();
+
+  origBlockActive = Services.prefs.getBoolPref(PREF_ACTIVE);
+
+  Services.prefs.setBoolPref(PREF_ACTIVE, true);
+
+  var newTab = gBrowser.addTab();
+  gBrowser.selectedTab = newTab;
+  gTestBrowser = gBrowser.selectedBrowser;
+  newTab.linkedBrowser.stop()
+
+  gTestBrowser.addEventListener("load", MixedTest1A, true);
+  var url = gHttpTestRoot + "file_bug902350.html";
+  gTestBrowser.contentWindow.location = url;
+}
+
+// Need to capture 2 loads, one for the main page and one for the iframe
+function MixedTest1A() {
+  gTestBrowser.removeEventListener("load", MixedTest1A, true);
+  gTestBrowser.addEventListener("load", MixedTest1B, true);
+}
+
+// Find the iframe and click the link in it
+function MixedTest1B() {
+  gTestBrowser.removeEventListener("load", MixedTest1B, true);
+  gTestBrowser.addEventListener("load", MixedTest1C, true);
+  var frame = content.document.getElementById("testing_frame");
+  var topTarget = frame.contentWindow.document.getElementById("topTarget");
+  topTarget.click();
+
+  // The link click should have caused a load and should not invoke the Mixed Content Blocker
+  var notification = PopupNotifications.getNotification("mixed-content-blocked", gTestBrowser);
+  ok(!notification, "Mixed Content Doorhanger appears when trying to navigate top");
+
+}
+
+function MixedTest1C() {
+  gTestBrowser.removeEventListener("load", MixedTest1C, true);
+  ok(gTestBrowser.contentWindow.location == "http://example.com/", "Navigating to insecure domain through target='_top' failed.")
+  MixedTestsCompleted();
+}
+
+