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/test/integration/electron/testrunner.js

@@ -0,0 +1,48 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+'use strict';
+
+const paths = require('path');
+const glob = require('glob');
+// Linux: prevent a weird NPE when mocha on Linux requires the window size from the TTY
+// Since we are not running in a tty environment, we just implementt he method statically
+const tty = require('tty');
+if (!tty.getWindowSize) {
+	tty.getWindowSize = function () { return [80, 75]; };
+}
+const Mocha = require('mocha');
+
+let mocha = new Mocha({
+	ui: 'tdd',
+	useColors: true
+});
+
+exports.configure = function configure(opts) {
+	mocha = new Mocha(opts);
+};
+
+exports.run = function run(testsRoot, clb) {
+	// Enable source map support
+	require('source-map-support').install();
+
+	// Glob test files
+	glob('**/**.test.js', { cwd: testsRoot }, function (error, files) {
+		if (error) {
+			return clb(error);
+		}
+		try {
+			// Fill into Mocha
+			files.forEach(function (f) { return mocha.addFile(paths.join(testsRoot, f)); });
+			// Run the tests
+			mocha.run(function (failures) {
+				clb(null, failures);
+			});
+		}
+		catch (error) {
+			return clb(error);
+		}
+	});
+};