Bug 1891694: Update tests within dom/ to work with https-first enabled,r=emilio

Differential Revision: https://phabricator.services.mozilla.com/D207531

dom/base/test/test_anchor_target_blank_referrer.html

@@ -35,6 +35,9 @@
 
   const testCases = [
     {ACTION: ["generate-anchor-target-blank-policy-test"],
+      PREFS: [
+        ["dom.security.https_first", false], // need to test http and https
+      ],
       TESTS: [
         // Referrer policy is set in meta
         {NAME: 'origin-in-meta-rel-noopener',

dom/tests/browser/browser.toml

@@ -44,6 +44,7 @@ tags = "geolocation"
 skip-if = ["os != 'mac'"]
 
 ["browser_bug1238427.js"]
+https_first_disabled = true
 
 ["browser_bug1316330.js"]