Add Chromium versions for RTCDataChannelEvent API (#12895)
Add Chromium versions for RTCDataChannelEvent API (#12895)

This PR adds real values for Chromium (Chrome, Opera, Samsung Internet, WebView Android) for the `RTCDataChannelEvent` API, based upon results from the [mdn-bcd-collector](https://mdn-bcd-collector.appspot.com) project (v4.0.0).

Tests Used: https://mdn-bcd-collector.appspot.com/tests/api/RTCDataChannelEvent
chrisdavidmills/browser-compat-data,mdn/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data