diff -r 000000000000 -r 6474c204b198 browser/devtools/webconsole/test/browser_webconsole_bug_837351_securityerrors.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/webconsole/test/browser_webconsole_bug_837351_securityerrors.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,34 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+const TEST_URI = "https://example.com/browser/browser/devtools/webconsole/test/test-bug-837351-security-errors.html";
+
+function run_test()
+{
+  addTab(TEST_URI);
+  browser.addEventListener("load", function onLoad(aEvent) {
+    browser.removeEventListener(aEvent.type, onLoad, true);
+    openConsole(null, function testSecurityErrorLogged (hud) {
+      let button = hud.ui.rootElement.querySelector(".webconsole-filter-button[category=\"security\"]");
+      ok(button, "Found security button in the web console");
+
+      waitForMessages({
+        webconsole: hud,
+        messages: [
+          {
+            name: "Logged blocking mixed active content",
+            text: "Blocked loading mixed active content \"http://example.com/\"",
+            category: CATEGORY_SECURITY,
+            severity: SEVERITY_ERROR
+          },
+        ],
+      }).then(finishTest);
+    });
+  }, true);
+}
+
+function test()
+{
+  SpecialPowers.pushPrefEnv({'set': [["security.mixed_content.block_active_content", true]]}, run_test);
+}
+