Update WritableStream to new standard version

third_party/WebKit/LayoutTests/http/tests/streams/writable-streams/close.js

-'use strict';
-
-if (self.importScripts) {
-  self.importScripts('/resources/testharness.js');
-  self.importScripts('../resources/test-utils.js');
-  self.importScripts('../resources/recording-streams.js');
-}
-
-promise_test(() => {
-  const ws = new WritableStream({
-    close() {
-      return 'Hello';
-    }
-  });
-
-  const writer = ws.getWriter();
-
-  const closePromise = writer.close();
-  return closePromise.then(value => assert_equals(value, undefined, 'fulfillment value must be undefined'));
-}, 'fulfillment value of ws.close() call must be undefined even if the underlying sink returns a non-undefined ' +
-    'value');
-
-promise_test(t => {
-  const passedError = new Error('error me');
-  let controller;
-  const ws = new WritableStream({
-    close(c) {
-      controller = c;
-      return delay(50);
-    }
-  });
-
-  const writer = ws.getWriter();
-
-  return Promise.all([
-    writer.close(),
-    delay(10).then(() => controller.error(passedError)),
-    promise_rejects(t, passedError, writer.closed,
-                    'closed promise should be rejected with the passed error'),
-    delay(70).then(() => promise_rejects(t, passedError, writer.closed, 'closed should stay rejected'))
-  ]);
-}, 'when sink calls error asynchronously while closing, the stream should become errored');
-
-promise_test(t => {
-  const passedError = new Error('error me');
-  const ws = new WritableStream({
-    close(controller) {
-      controller.error(passedError);
-    }
-  });
-
-  const writer = ws.getWriter();
-
-  return writer.close().then(() => promise_rejects(t, passedError, writer.closed, 'closed should stay rejected'));
-}, 'when sink calls error synchronously while closing, the stream should become errored');
-
-promise_test(() => {
-  const ws = recordingWritableStream();
-
-  const writer = ws.getWriter();
-
-  return writer.ready.then(() => {
-    assert_equals(writer.desiredSize, 1, 'desiredSize should be 1');
-
-    writer.close();
-    assert_equals(writer.desiredSize, 1, 'desiredSize should be still 1');
-
-    return writer.ready.then(v => {
-      assert_equals(v, undefined, 'ready promise should be fulfilled with undefined');
-      assert_array_equals(ws.events, ['close'], 'write and abort should not be called');
-    });
-  });
-}, 'when close is called on a WritableStream in writable state, ready should return a fulfilled promise');
-
-promise_test(() => {
-  const ws = recordingWritableStream({
-    write() {
-      return new Promise(() => {});
-    }
-  });
-
-  const writer = ws.getWriter();
-
-  return writer.ready.then(() => {
-    writer.write('a');
-
-    assert_equals(writer.desiredSize, 0, 'desiredSize should be 0');
-
-    let calledClose = false;
-    return Promise.all([
-      writer.ready.then(v => {
-        assert_equals(v, undefined, 'ready promise should be fulfilled with undefined');
-        assert_true(calledClose, 'ready should not be fulfilled before writer.close() is called');
-        assert_array_equals(ws.events, ['write', 'a'], 'sink abort() should not be called');
-      }),
-      flushAsyncEvents().then(() => {
-        writer.close();
-        calledClose = true;
-      })
-    ]);
-  });
-}, 'when close is called on a WritableStream in waiting state, ready promise should be fulfilled');
-
-promise_test(() => {
-  let asyncCloseFinished = false;
-  const ws = recordingWritableStream({
-    close() {
-      return flushAsyncEvents().then(() => {
-        asyncCloseFinished = true;
-      });
-    }
-  });
-
-  const writer = ws.getWriter();
-  return writer.ready.then(() => {
-    writer.write('a');
-
-    writer.close();
-
-    return writer.ready.then(v => {
-      assert_false(asyncCloseFinished, 'ready promise should be fulfilled before async close completes');
-      assert_equals(v, undefined, 'ready promise should be fulfilled with undefined');
-      assert_array_equals(ws.events, ['write', 'a', 'close'], 'sink abort() should not be called');
-    });
-  });
-}, 'when close is called on a WritableStream in waiting state, ready should be fulfilled immediately even if close ' +
-    'takes a long time');
-
-promise_test(t => {
-  const rejection = { name: 'letter' };
-  const ws = new WritableStream({
-    close() {
-      return {
-        then(onFulfilled, onRejected) { onRejected(rejection); }
-      };
-    }
-  });
-  return promise_rejects(t, rejection, ws.getWriter().close(), 'close() should return a rejection');
-}, 'returning a thenable from close() should work');
-
-promise_test(t => {
-  const ws = new WritableStream();
-  const writer = ws.getWriter();
-  return writer.ready.then(() => {
-    const closePromise = writer.close();
-    const closedPromise = writer.closed;
-    writer.releaseLock();
-    return Promise.all([
-      closePromise,
-      promise_rejects(t, new TypeError(), closedPromise, '.closed promise should be rejected')
-    ]);
-  });
-}, 'releaseLock() should not change the result of sync close()');
-
-promise_test(t => {
-  const ws = new WritableStream({
-    close() {
-      return flushAsyncEvents();
-    }
-  });
-  const writer = ws.getWriter();
-  return writer.ready.then(() => {
-    const closePromise = writer.close();
-    const closedPromise = writer.closed;
-    writer.releaseLock();
-    return Promise.all([
-      closePromise,
-      promise_rejects(t, new TypeError(), closedPromise, '.closed promise should be rejected')
-    ]);
-  });
-}, 'releaseLock() should not change the result of async close()');
-
-promise_test(() => {
-  let resolveClose;
-  const ws = new WritableStream({
-    close() {
-      const promise = new Promise(resolve => {
-        resolveClose = resolve;
-      });
-      return promise;
-    }
-  });
-  const writer = ws.getWriter();
-  const closePromise = writer.close();
-  writer.releaseLock();
-  return delay(0).then(() => {
-    resolveClose();
-    return closePromise.then(() => {
-      assert_equals(ws.getWriter().desiredSize, 0, 'desiredSize should be 0');
-    });
-  });
-}, 'close() should set state to CLOSED even if writer has detached');
-
-promise_test(() => {
-  let resolveClose;
-  const ws = new WritableStream({
-    close() {
-      const promise = new Promise(resolve => {
-        resolveClose = resolve;
-      });
-      return promise;
-    }
-  });
-  const writer = ws.getWriter();
-  writer.close();
-  writer.releaseLock();
-  return delay(0).then(() => {
-    const abortingWriter = ws.getWriter();
-    const abortPromise = abortingWriter.abort();
-    abortingWriter.releaseLock();
-    resolveClose();
-    return abortPromise;
-  });
-}, 'the promise returned by async abort during close should resolve');
-
-done();