Bug 1922020, part 11 - Remove reliance on window.opener storage access heuristic in user.js from netwerk/ r=valentin,cookie-reviewers

Differential Revision: https://phabricator.services.mozilla.com/D224816

netwerk/cookie/test/mochitest/mochitest.toml

@@ -8,6 +8,7 @@ support-files = [
 ["test_document_cookie.html"]
 
 ["test_document_cookie_notification.html"]
+scheme = "https"
 
 ["test_fetch.html"]
 

netwerk/cookie/test/mochitest/server_time.sjs

@@ -5,7 +5,9 @@ function handleRequest(aRequest, aResponse) {
 
   aResponse.setHeader(
     "Set-Cookie",
-    `${parts[0]}=foo; path=/; sameSite=none; secure; expires=${new Date(
+    `${
+      parts[0]
+    }=foo; path=/; sameSite=none; secure; partitioned; expires=${new Date(
       parseInt(parts[2], 10)
     ).toGMTString()}`,
     false

netwerk/cookie/test/mochitest/test_document_cookie_notification.html

@@ -24,7 +24,7 @@ Listener.prototype = {
 }
 
 const cl = new Listener();
-document.cookie = "a=" + Math.random();
+document.cookie = "a=" + Math.random() + "; Secure; Partitioned; SameSite=None";
 SimpleTest.waitForExplicitFinish();
 
 </script>

netwerk/test/mochitests/file_testcommon.js

@@ -33,6 +33,12 @@ function setupTest(uri, cookies, loads) {
   gExpectedCookies = cookies;
   gExpectedLoads = loads;
 
+  // If this is an xorigin test, the "oh=hai" cookie set by this frame
+  // in runTest() does not work because we are third-party
+  if (isXOrigin) {
+    gExpectedCookies -= 1;
+  }
+
   // Listen for MessageEvents.
   window.addEventListener("message", messageReceiver);