Backed out changeset 8d42de3d9245 (bug 1443861) for landing without reviewer

browser/base/content/test/webrtc/browser_devices_get_user_media_anim.js

@@ -58,8 +58,8 @@ var gTests = [
       await closeStream();
 
       // TODO(Bug 1304997): Fix the race in closeStream() and remove this
-      // TestUtils.waitForCondition().
-      await TestUtils.waitForCondition(() => !tab.getAttribute("sharing"));
+      // promiseWaitForCondition().
+      await promiseWaitForCondition(() => !tab.getAttribute("sharing"));
       is(tab.getAttribute("sharing"), "",
          "the tab no longer has the 'sharing' attribute after closing the stream");
     }