test: clean up test data for web-contents crash

Co-authored-by: Jeremy Rose <jeremya@chromium.org>

spec-main/fixtures/crash-cases/webview-contents-error-on-creation/index.js

@@ -1,47 +1,11 @@
-// Modules to control application life and create native browser window
 const { app, BrowserWindow } = require('electron');
-const path = require('path');
 
 app.on('web-contents-created', (wc) => {
   throw new Error();
 });
 
-function createWindow () {
-  // Create the browser window.
-  const mainWindow = new BrowserWindow({
-    width: 800,
-    height: 600,
-    webPreferences: {
-      preload: path.join(__dirname, 'preload.js')
-    }
-  });
-
-  // and load the index.html of the app.
-  mainWindow.loadFile('index.html');
-
-  // Open the DevTools.
-  // mainWindow.webContents.openDevTools()
-}
-
-// This method will be called when Electron has finished
-// initialization and is ready to create browser windows.
-// Some APIs can only be used after this event occurs.
-app.whenReady().then(() => {
-  createWindow();
-
-  app.on('activate', function () {
-    // On macOS it's common to re-create a window in the app when the
-    // dock icon is clicked and there are no other windows open.
-    if (BrowserWindow.getAllWindows().length === 0) createWindow();
-  });
+app.whenReady().then(async () => {
+  const mainWindow = new BrowserWindow({ show: false });
+  await mainWindow.loadURL('about:blank');
+  process.exit(0);
 });
-
-// Quit when all windows are closed, except on macOS. There, it's common
-// for applications and their menu bar to stay active until the user quits
-// explicitly with Cmd + Q.
-app.on('window-all-closed', function () {
-  if (process.platform !== 'darwin') app.quit();
-});
-
-// In this file you can include the rest of your app's specific main process
-// code. You can also put them in separate files and require them here.