[Feature Request]: AutoFill enabled in the <webview> tag for in-app purchases

**Preflight Checklist**

* [X] I have read the [Contributing Guidelines](https://github.com/electron/electron/blob/master/CONTRIBUTING.md) for this project.
* [X] I agree to follow the [Code of Conduct](https://github.com/electron/electron/blob/master/CODE_OF_CONDUCT.md) that this project adheres to.
* [X] I have searched the issue tracker for a feature request that matches the one I want to file, without success.

**Problem Description**

If a Chrome user is logged into Google and autofill for passwords, payment methods and addresses are turned on, when Electron triggers a webview, I would like to have autofill populate these fields in the Electron webview.

I've looked over the docs and prior issues but nothing seems to be coming up. For in-app purchases, this is a vital feature since it reduces friction for a sale.

**Proposed Solution**

I would like to be able to sync google chrome, or the browser data with the chromium engine, since when opening internet tabs it's suppose to have base features such as autofill.

**Alternatives Considered**

Tried all the configs of the tag, and even the chrome extentions for electron. Used other ways to open the purchase page in also, such as calling the external browser. But then its not an in-app purchase.

**Additional Information**

Background:

Electron version: 9.2
Mac OS 10.13
Win 10