[wubin]

> Since Android 4.4 (KitKat), the WebView component is based on the Chromium open source project. (...) Webviews also share the same rendering engine as Chrome for Android. [0]

KitKat was released in 2013[1] as well as Blink in the same year[2].

Apart from Blink being a WebKit fork, WebKit itself is not "the dominant engine" anymore at least since 2014.

[0]: https://developer.chrome.com/multidevice/webview/overview

[1]: https://en.wikipedia.org/wiki/Android_version_history

[2]: https://en.wikipedia.org/wiki/Blink_(browser_engine)