Update WritableStream to new standard version

third_party/WebKit/LayoutTests/http/tests/streams/writable-streams/brand-checks.js

-'use strict';
-
-if (self.importScripts) {
-  self.importScripts('/resources/testharness.js');
-}
-
-function fakeWritableStreamDefaultWriter() {
-  return {
-    get closed() { return Promise.resolve(); },
-    get desiredSize() { return 1; },
-    get ready() { return Promise.resolve(); },
-    abort() { return Promise.resolve(); },
-    close() { return Promise.resolve(); },
-    write() { return Promise.resolve(); }
-  };
-}
-
-function realReadableStreamDefaultWriter() {
-  const rs = new ReadableStream();
-  return rs.getReader();
-}
-
-function getterRejects(t, obj, getterName, target) {
-  const getter = Object.getOwnPropertyDescriptor(obj, getterName).get;
-
-  return promise_rejects(t, new TypeError(), getter.call(target),
-    getterName + ' should reject with a TypeError');
-}
-
-function methodRejects(t, obj, methodName, target) {
-  const method = obj[methodName];
-
-  return promise_rejects(t, new TypeError(), method.call(target),
-    methodName + ' should reject with a TypeError');
-}
-
-function getterThrows(obj, getterName, target) {
-  const getter = Object.getOwnPropertyDescriptor(obj, getterName).get;
-
-  assert_throws(new TypeError(), () => getter.call(target), getterName + ' should throw a TypeError');
-}
-
-const ws = new WritableStream();
-const writer = ws.getWriter();
-const WritableStreamDefaultWriter = writer.constructor;
-const WriterProto = WritableStreamDefaultWriter.prototype;
-
-test(() => {
-  getterThrows(WriterProto, 'desiredSize', fakeWritableStreamDefaultWriter());
-  getterThrows(WriterProto, 'desiredSize', realReadableStreamDefaultWriter());
-}, 'WritableStreamDefaultWriter.prototype.desiredSize enforces a brand check');
-
-promise_test(t => {
-  return Promise.all([getterRejects(t, WriterProto, 'closed', fakeWritableStreamDefaultWriter()),
-    getterRejects(t, WriterProto, 'closed', realReadableStreamDefaultWriter())]);
-}, 'WritableStreamDefaultWriter.prototype.closed enforces a brand check');
-
-promise_test(t => {
-  return Promise.all([getterRejects(t, WriterProto, 'ready', fakeWritableStreamDefaultWriter()),
-    getterRejects(t, WriterProto, 'ready', realReadableStreamDefaultWriter())]);
-}, 'WritableStreamDefaultWriter.prototype.ready enforces a brand check');
-
-test(t => {
-  return Promise.all([methodRejects(t, WriterProto, 'abort', fakeWritableStreamDefaultWriter()),
-    methodRejects(t, WriterProto, 'abort', realReadableStreamDefaultWriter())]);
-
-}, 'WritableStreamDefaultWriter.prototype.abort enforces a brand check');
-
-promise_test(t => {
-  return Promise.all([methodRejects(t, WriterProto, 'write', fakeWritableStreamDefaultWriter()),
-    methodRejects(t, WriterProto, 'write', realReadableStreamDefaultWriter())]);
-}, 'WritableStreamDefaultWriter.prototype.write enforces a brand check');
-
-promise_test(t => {
-  return Promise.all([methodRejects(t, WriterProto, 'close', fakeWritableStreamDefaultWriter()),
-    methodRejects(t, WriterProto, 'close', realReadableStreamDefaultWriter())]);
-}, 'WritableStreamDefaultWriter.prototype.close enforces a brand check');
-
-done();