The latest build of Google Chrome, version 51, now includes a built-in Cast option, meaning users will no longer be required to download a browser extension if they want to beam media from their devices to their TV. While you’ll still need to physically plug a Chromecast device into your telly’s receiver, it’s now simply a matter of right-clicking a tab and selecting the “Cast” option to send it over.
Source: Google Chrome now comes with casting functionality baked in | Ars Technica