chore(vscode): update to 1.53.2

These conflicts will be resolved in the following commits. We do it this way so
that PR review is possible.

lib/vscode/src/vs/base/parts/ipc/test/browser/ipc.mp.test.ts

@@ -0,0 +1,58 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as assert from 'assert';
+import { Event } from 'vs/base/common/event';
+import { CancellationToken } from 'vs/base/common/cancellation';
+import { Client as MessagePortClient } from 'vs/base/parts/ipc/browser/ipc.mp';
+
+suite('IPC, MessagePorts', () => {
+
+	test('message passing', async () => {
+		const { port1, port2 } = new MessageChannel();
+
+		const client1 = new MessagePortClient(port1, 'client1');
+		const client2 = new MessagePortClient(port2, 'client2');
+
+		client1.registerChannel('client1', {
+			call(_: unknown, command: string, arg: any, cancellationToken: CancellationToken): Promise<any> {
+				switch (command) {
+					case 'testMethodClient1': return Promise.resolve('success1');
+					default: return Promise.reject(new Error('not implemented'));
+				}
+			},
+
+			listen(_: unknown, event: string, arg?: any): Event<any> {
+				switch (event) {
+					default: throw new Error('not implemented');
+				}
+			}
+		});
+
+		client2.registerChannel('client2', {
+			call(_: unknown, command: string, arg: any, cancellationToken: CancellationToken): Promise<any> {
+				switch (command) {
+					case 'testMethodClient2': return Promise.resolve('success2');
+					default: return Promise.reject(new Error('not implemented'));
+				}
+			},
+
+			listen(_: unknown, event: string, arg?: any): Event<any> {
+				switch (event) {
+					default: throw new Error('not implemented');
+				}
+			}
+		});
+
+		const channelClient1 = client2.getChannel('client1');
+		assert.strictEqual(await channelClient1.call('testMethodClient1'), 'success1');
+
+		const channelClient2 = client1.getChannel('client2');
+		assert.strictEqual(await channelClient2.call('testMethodClient2'), 'success2');
+
+		client1.dispose();
+		client2.dispose();
+	});
+});