[Bug]: TypeError: win.setTitleBarOverlay is not a function

[imp-oh]

Preflight Checklist

• I have read the Contributing Guidelines for this project.
• I agree to follow the Code of Conduct that this project adheres to.
• I have searched the issue tracker for a bug report that matches the one I want to file, without success.

Electron Version

30.0.0

What operating system are you using?

Windows

Operating System Version

win10

What arch are you using?

x64

Last Known Working Electron version

30.0.1

Expected Behavior

// In the main process.
const { BaseWindow, WebContentsView, app } = require('electron')

app.whenReady().then(() => {
  const win = new BaseWindow({ width: 800, height: 600 ,  titleBarStyle: 'hidden',})

  win.setTitleBarOverlay({
    color: '#DEE1E6',
    symbolColor: 'black',
    height: 30
  })

  const leftView = new WebContentsView()
  leftView.webContents.loadURL('https://electronjs.org')
  win.contentView.addChildView(leftView)

  // const rightView = new WebContentsView()
  // rightView.webContents.loadURL('https://github.com/electron/electron')
  // win.contentView.addChildView(rightView)

  leftView.setBounds({ x: 0, y: 0, width: 400, height: 600 })
  // rightView.setBounds({ x: 400, y: 0, width: 400, height: 600 })
})

Actual Behavior

Want to support setTitleBarOverlay api

Testcase Gist URL

No response

Additional Information

(node:20488) UnhandledPromiseRejectionWarning: TypeError: win.setTitleBarOverlay is not a function
at E:\Hui\Github\ce-hub\cehub-browser-window\out\main\index.js:18:9
(Use electron --trace-warnings ... to show where the warning was created)
(node:20488) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag --unhandled-rejections=strict (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)

[AliasT]

seems only works with BrowserWindow.