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/electron-main/ipc.electron.ts

@@ -0,0 +1,57 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { ipcMain, WebContents } from 'electron';
+import { Event, Emitter } from 'vs/base/common/event';
+import { IPCServer, ClientConnectionEvent } from 'vs/base/parts/ipc/common/ipc';
+import { Protocol as ElectronProtocol } from 'vs/base/parts/ipc/common/ipc.electron';
+import { IDisposable, toDisposable } from 'vs/base/common/lifecycle';
+import { VSBuffer } from 'vs/base/common/buffer';
+
+interface IIPCEvent {
+	event: { sender: WebContents; };
+	message: Buffer | null;
+}
+
+function createScopedOnMessageEvent(senderId: number, eventName: string): Event<VSBuffer | null> {
+	const onMessage = Event.fromNodeEventEmitter<IIPCEvent>(ipcMain, eventName, (event, message) => ({ event, message }));
+	const onMessageFromSender = Event.filter(onMessage, ({ event }) => event.sender.id === senderId);
+
+	return Event.map(onMessageFromSender, ({ message }) => message ? VSBuffer.wrap(message) : message);
+}
+
+/**
+ * An implemention of `IPCServer` on top of Electron `ipcMain` API.
+ */
+export class Server extends IPCServer {
+
+	private static readonly Clients = new Map<number, IDisposable>();
+
+	private static getOnDidClientConnect(): Event<ClientConnectionEvent> {
+		const onHello = Event.fromNodeEventEmitter<WebContents>(ipcMain, 'vscode:hello', ({ sender }) => sender);
+
+		return Event.map(onHello, webContents => {
+			const id = webContents.id;
+			const client = Server.Clients.get(id);
+
+			if (client) {
+				client.dispose();
+			}
+
+			const onDidClientReconnect = new Emitter<void>();
+			Server.Clients.set(id, toDisposable(() => onDidClientReconnect.fire()));
+
+			const onMessage = createScopedOnMessageEvent(id, 'vscode:message') as Event<VSBuffer>;
+			const onDidClientDisconnect = Event.any(Event.signal(createScopedOnMessageEvent(id, 'vscode:disconnect')), onDidClientReconnect.event);
+			const protocol = new ElectronProtocol(webContents, onMessage);
+
+			return { protocol, onDidClientDisconnect };
+		});
+	}
+
+	constructor() {
+		super(Server.getOnDidClientConnect());
+	}
+}