--- a/browser/base/content/test/general/browser_e10s_about_process.js
+++ b/browser/base/content/test/general/browser_e10s_about_process.js
@@ -1,31 +1,39 @@
 const CHROME_PROCESS = E10SUtils.NOT_REMOTE;
 const WEB_CONTENT_PROCESS = E10SUtils.WEB_REMOTE_TYPE;
+const PRIVILEGED_CONTENT_PROCESS = E10SUtils.PRIVILEGED_REMOTE_TYPE;
 
 const CHROME = {
   id: "cb34538a-d9da-40f3-b61a-069f0b2cb9fb",
   path: "test-chrome",
   flags: 0,
 };
 const CANREMOTE = {
   id: "2480d3e1-9ce4-4b84-8ae3-910b9a95cbb3",
   path: "test-allowremote",
   flags: Ci.nsIAboutModule.URI_CAN_LOAD_IN_CHILD,
 };
 const MUSTREMOTE = {
   id: "f849cee5-e13e-44d2-981d-0fb3884aaead",
   path: "test-mustremote",
   flags: Ci.nsIAboutModule.URI_MUST_LOAD_IN_CHILD,
 };
+const CANPRIVILEGEDREMOTE = {
+  id: "a04ffafe-6c63-4266-acae-0f4b093165aa",
+  path: "test-canprivilegedremote",
+  flags: Ci.nsIAboutModule.URI_MUST_LOAD_IN_CHILD |
+         Ci.nsIAboutModule.URI_CAN_LOAD_IN_PRIVILEGED_CHILD,
+};
 
 const TEST_MODULES = [
   CHROME,
   CANREMOTE,
-  MUSTREMOTE
+  MUSTREMOTE,
+  CANPRIVILEGEDREMOTE
 ];
 
 function AboutModule() {
 }
 
 AboutModule.prototype = {
   newChannel(aURI, aLoadInfo) {
     throw Cr.NS_ERROR_NOT_IMPLEMENTED;
@@ -74,41 +82,75 @@ add_task(async function init() {
 
 registerCleanupFunction(() => {
   let registrar = Components.manager.QueryInterface(Ci.nsIComponentRegistrar);
   for (let module of TEST_MODULES) {
     registrar.unregisterFactory(Components.ID(module.id), AboutModuleFactory);
   }
 });
 
-function test_url(url, chromeResult, webContentResult) {
+function test_url(url, chromeResult, webContentResult, privilegedContentResult) {
   is(E10SUtils.canLoadURIInRemoteType(url, CHROME_PROCESS),
      chromeResult, "Check URL in chrome process.");
   is(E10SUtils.canLoadURIInRemoteType(url, WEB_CONTENT_PROCESS),
      webContentResult, "Check URL in web content process.");
+  is(E10SUtils.canLoadURIInRemoteType(url, PRIVILEGED_CONTENT_PROCESS),
+     privilegedContentResult, "Check URL in privileged content process.");
 
   is(E10SUtils.canLoadURIInRemoteType(url + "#foo", CHROME_PROCESS),
      chromeResult, "Check URL with ref in chrome process.");
   is(E10SUtils.canLoadURIInRemoteType(url + "#foo", WEB_CONTENT_PROCESS),
      webContentResult, "Check URL with ref in web content process.");
+  is(E10SUtils.canLoadURIInRemoteType(url + "#foo", PRIVILEGED_CONTENT_PROCESS),
+     privilegedContentResult, "Check URL with ref in privileged content process.");
 
   is(E10SUtils.canLoadURIInRemoteType(url + "?foo", CHROME_PROCESS),
      chromeResult, "Check URL with query in chrome process.");
   is(E10SUtils.canLoadURIInRemoteType(url + "?foo", WEB_CONTENT_PROCESS),
      webContentResult, "Check URL with query in web content process.");
+  is(E10SUtils.canLoadURIInRemoteType(url + "?foo", PRIVILEGED_CONTENT_PROCESS),
+     privilegedContentResult, "Check URL with query in privileged content process.");
 
   is(E10SUtils.canLoadURIInRemoteType(url + "?foo#bar", CHROME_PROCESS),
      chromeResult, "Check URL with query and ref in chrome process.");
   is(E10SUtils.canLoadURIInRemoteType(url + "?foo#bar", WEB_CONTENT_PROCESS),
      webContentResult, "Check URL with query and ref in web content process.");
+  is(E10SUtils.canLoadURIInRemoteType(url + "?foo#bar", PRIVILEGED_CONTENT_PROCESS),
+     privilegedContentResult, "Check URL with query and ref in privileged content process.");
 }
 
 add_task(async function test_chrome() {
-  test_url("about:" + CHROME.path, true, false);
+  test_url("about:" + CHROME.path, true, false, false);
 });
 
 add_task(async function test_any() {
-  test_url("about:" + CANREMOTE.path, true, true);
+  test_url("about:" + CANREMOTE.path, true, true, false);
 });
 
 add_task(async function test_remote() {
-  test_url("about:" + MUSTREMOTE.path, false, true);
+  test_url("about:" + MUSTREMOTE.path, false, true, false);
 });
+
+add_task(async function test_privileged_remote_true() {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["browser.tabs.remote.separatePrivilegedContentProcess", true],
+    ]
+  });
+
+  // This shouldn't be taken literally. We will always use the privileged
+  // content type if the URI_CAN_LOAD_IN_PRIVILEGED_CHILD flag is enabled and
+  // the pref is turned on.
+  test_url("about:" + CANPRIVILEGEDREMOTE.path, false, false, true);
+});
+
+add_task(async function test_privileged_remote_false() {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["browser.tabs.remote.separatePrivilegedContentProcess", false],
+    ]
+  });
+
+  // This shouldn't be taken literally. We will always use the privileged
+  // content type if the URI_CAN_LOAD_IN_PRIVILEGED_CHILD flag is enabled and
+  // the pref is turned on.
+  test_url("about:" + CANPRIVILEGEDREMOTE.path, false, true, false);
+});