Bug 1867730 [wpt PR 43465] - Revert "Dispatch close event when Messag…

…ePort is disentangled", a=testonly

Automatic update from web-platform-tests
Revert "Dispatch close event when MessagePort is disentangled"

This reverts commit 6a74d3d8049e1744b862757a73f90f3d7a5e08b0.

Reason for revert:
The tests newly added by the original CL are failing on
chrome_wpt_tests on the Linux Tests bot:
https://ci.chromium.org/ui/p/chromium/builders/ci/Linux%20Tests/138259/overview

Original change's description:
> Dispatch close event when MessagePort is disentangled
>
> We want to dispatch a close event when an entangled MessagePort is disconnected.
> Given a pair of entangled ports, port1 and port2, if port2 is closed at any point,
> a port1’s error handler is run.
> So we can change an error handler to dispatch a close event.
>
> The tests of close event are as follows:
> 1) port was explicitly closed.
> 2) owning document was destroyed.
> 3) owning document crashed.
> 4) port was garbage collected.
>
> Design Doc:https://docs.google.com/document/d/1lXZU2Pk2ycitqj8aL9kxT2aauwXqpA0vJDUalkXA29Y
> Explainer:https://github.com/fergald/explainer-messageport-close
> HTML spec PR:whatwg/html#9933
>
> Bug: 1495616
> Change-Id: I99f9f5a0d7cc63f0916da316ec666ba793215019
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5003089
> Reviewed-by: Jeremy Roman <jbroman@chromium.org>
> Commit-Queue: Nonoka Muraki <murakinonoka@chromium.org>
> Reviewed-by: Ming-Ying Chung <mych@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1231743}

Bug: 1495616
Change-Id: Ib697597d6ab70a9a7bfc41a67dfc647698024a64
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5075742
Reviewed-by: Ming-Ying Chung <mych@chromium.org>
Commit-Queue: Hiroki Nakagawa <nhiroki@chromium.org>
Owners-Override: Hiroki Nakagawa <nhiroki@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1231780}

--

wpt-commits: 5d1c45f9f81c37c45e7acc351348cd6e9879597f
wpt-pr: 43465

testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/service-worker.js

@@ -23,20 +23,6 @@ self.addEventListener('message', function(event) {
         client.postMessage("dummyValue");
       }
       event.data.port.postMessage("PASS");
-    } else if (event.data.type == 'storeMessagePort') {
-      let isCloseEventFired = false;
-      const port = event.ports[0];
-      port.start();
-      port.onmessage = (event) => {
-        if (event.data == 'Confirm the ports can communicate') {
-          port.postMessage('Receive message');
-        } else if (event.data == 'Ask if the close event was fired') {
-          port.postMessage(isCloseEventFired);
-        }
-      };
-      port.onclose = () => {
-        isCloseEventFired = true;
-      };
     }
   });
 

testing/web-platform/tests/webmessaging/message-channels/close-event/close-event.tentative.any.js

@@ -0,0 +1,8 @@
+// META: title=close event test
+
+async_test(t => {
+  const channel = new MessageChannel();
+  channel.port1.start();
+  channel.port1.onclose = t.step_func_done();
+  channel.port1.dispatchEvent(new Event('close'));
+}, 'Close event listener added with onclose must be called.');