苹果官方发布了适用于 Windows 下 Chrome 浏览器的 iCloud 密码扩展 https://chrome.google.com/webstore/detail/icloud-passwords/pejdijmoenmkgeppbflobdenhhabjlaj
Google
iCloud Passwords - Chrome Web Store
iCloud Passwords lets you fill passwords from iCloud Keychain when signing in to websites using Chrome.