Bug 1711441 [wpt PR 29015] - WritableStreamDefaultController should n…

…ow be exposed, a=testonly

Automatic update from web-platform-tests
WritableStreamDefaultController should now be exposed

See whatwg/streams#1035. No new test added for
its exposure as this is covered by streams/idlharness.any.js.

--

wpt-commits: 59873545965cc737221c40c4004f2a3c9ce23f28
wpt-pr: 29015

testing/web-platform/tests/workers/semantics/interface-objects/002.worker.js

@@ -19,8 +19,6 @@ var unexpected = [
   "PageTransitionEvent",
   // https://dom.spec.whatwg.org/
   "DOMImplementation",
-  // https://streams.spec.whatwg.org/
-  "WritableStreamDefaultController",
   // http://w3c.github.io/IndexedDB/
   "IDBEnvironment",
   // https://www.w3.org/TR/2010/NOTE-webdatabase-20101118/