fix: crash problem with message_port close event (#41201)

When worker_thread shutdown, it will destory context and close
message_port. In this case, it should not dispatch close event.
Because it forbid script running during NotifyContextDestroyed in
ContextLifecycleNotifier.
Now chromium has implemented close_event and will not crash,
so we remove the patch with #22532 and add one test.

patches/chromium/.patches

@@ -47,7 +47,6 @@ feat_add_support_for_overriding_the_base_spellchecker_download_url.patch
 feat_enable_offscreen_rendering_with_viz_compositor.patch
 gpu_notify_when_dxdiag_request_fails.patch
 feat_allow_embedders_to_add_observers_on_created_hunspell.patch
-feat_add_onclose_to_messageport.patch
 allow_in-process_windows_to_have_different_web_prefs.patch
 refactor_expose_cursor_changes_to_the_webcontentsobserver.patch
 crash_allow_setting_more_options.patch

patches/chromium/feat_add_onclose_to_messageport.patch

@@ -1,31 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Jeremy Apthorp <nornagon@nornagon.net>
-Date: Wed, 4 Mar 2020 11:18:03 -0800
-Subject: feat: add onclose to MessagePort
-
-This adds the 'onclose' event to MessagePort. Can be removed once
-https://bugs.chromium.org/p/chromium/issues/detail?id=1495616 is fixed.
-
-diff --git a/third_party/blink/renderer/core/messaging/message_port.cc b/third_party/blink/renderer/core/messaging/message_port.cc
-index 2e0961fd8c0bc8f9a2a7c124693033eb234928bd..5c54705e3c1766553e9cba13142345485ca44578 100644
---- a/third_party/blink/renderer/core/messaging/message_port.cc
-+++ b/third_party/blink/renderer/core/messaging/message_port.cc
-@@ -195,6 +195,7 @@ void MessagePort::close() {
-     Entangle(pipe.TakePort0(), nullptr);
-   }
-   closed_ = true;
-+  DispatchEvent(*Event::Create(event_type_names::kClose));
- }
- 
- void MessagePort::OnConnectionError() {
-diff --git a/third_party/blink/renderer/core/messaging/message_port.idl b/third_party/blink/renderer/core/messaging/message_port.idl
-index 9df43655b569428a6abc54341b4b0023e159f99b..3f1f181d9b8a66997136f870f55c97c08294b6eb 100644
---- a/third_party/blink/renderer/core/messaging/message_port.idl
-+++ b/third_party/blink/renderer/core/messaging/message_port.idl
-@@ -40,5 +40,5 @@
-     // event handlers
-     attribute EventHandler onmessage;
-     attribute EventHandler onmessageerror;
--    [RuntimeEnabled=MessagePortCloseEvent] attribute EventHandler onclose;
-+    attribute EventHandler onclose;
- };

spec/api-ipc-spec.ts

@@ -345,6 +345,59 @@ describe('ipc module', () => {
           }})()`);
         });
       });
+
+      describe('when context destroyed', () => {
+        it('does not crash', async () => {
+          let count = 0;
+          const server = http.createServer((req, res) => {
+            switch (req.url) {
+              case '/index.html':
+                res.setHeader('content-type', 'text/html');
+                res.statusCode = 200;
+                count = count + 1;
+                res.end(`
+                  <title>Hello${count}</title>
+                  <script>
+                  var sharedWorker = new SharedWorker('worker.js');
+
+                  sharedWorker.port.addEventListener('close', function(event) {
+                     console.log('close event', event.data);
+                  });
+                  </script>`);
+
+                break;
+              case '/worker.js':
+                res.setHeader('content-type', 'application/javascript; charset=UTF-8');
+                res.statusCode = 200;
+                res.end(`
+                  self.addEventListener('connect', function(event) {
+                    var port = event.ports[0];
+
+                    port.addEventListener('message', function(event) {
+                      console.log('Message from main:', event.data);
+                      port.postMessage('Hello from SharedWorker!');
+                    });
+
+                  });`);
+                break;
+              default:
+                throw new Error(`unsupported endpoint: ${req.url}`);
+            }
+          });
+          const { port } = await listen(server);
+          defer(() => {
+            server.close();
+          });
+          const w = new BrowserWindow({ show: false });
+          await w.loadURL(`http://localhost:${port}/index.html`);
+          expect(w.webContents.getTitle()).to.equal('Hello1');
+          // Before the fix, it would crash if reloaded, but now it doesn't
+          await w.loadURL(`http://localhost:${port}/index.html`);
+          expect(w.webContents.getTitle()).to.equal('Hello2');
+          // const crashEvent = emittedOnce(w.webContents, 'render-process-gone');
+          // await crashEvent;
+        });
+      });
     });
 
     describe('MessageChannelMain', () => {