Mention Chrome's navigator.clipboard.{read,write} version_added. (#4907)
Mention Chrome's navigator.clipboard.{read,write} version_added. (#4907)

* Mention Chrome's navigator.clipboard.{read,write} version_added.

Chrome added navigator.clipboard.{read,write} in M76, so mention it here.
Source:
- https://crbug.com/150835
- https://developers.google.com/web/updates/2019/07/image-support-for-async-clipboard

* Update Opera and Webview versions as well

(opera_android doesn't seem to have Chrome M76 yet, as the Blink engine_version "76" hasn't been reached yet)

mdn/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data,chrisdavidmills/browser-compat-data